From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/net/core/devlink.c | 6583 +++++++++++++++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 6,060 insertions(+), 523 deletions(-)
diff --git a/kernel/net/core/devlink.c b/kernel/net/core/devlink.c
index 6ad0952..38666dd 100644
--- a/kernel/net/core/devlink.c
+++ b/kernel/net/core/devlink.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* net/core/devlink.c - Network physical/parent device Netlink interface
*
* Heavily inspired by net/wireless/
* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
* Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
*/
#include <linux/kernel.h>
@@ -19,6 +15,11 @@
#include <linux/device.h>
#include <linux/list.h>
#include <linux/netdevice.h>
+#include <linux/spinlock.h>
+#include <linux/refcount.h>
+#include <linux/workqueue.h>
+#include <linux/u64_stats_sync.h>
+#include <linux/timekeeping.h>
#include <rdma/ib_verbs.h>
#include <net/netlink.h>
#include <net/genetlink.h>
@@ -81,6 +82,12 @@
EXPORT_SYMBOL(devlink_dpipe_header_ipv6);
EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
+EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwerr);
+EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_trap_report);
+
+static const struct nla_policy devlink_function_nl_policy[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1] = {
+ [DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR] = { .type = NLA_BINARY },
+};
static LIST_HEAD(devlink_list);
@@ -92,15 +99,24 @@
*/
static DEFINE_MUTEX(devlink_mutex);
-static struct net *devlink_net(const struct devlink *devlink)
+struct net *devlink_net(const struct devlink *devlink)
{
return read_pnet(&devlink->_net);
}
+EXPORT_SYMBOL_GPL(devlink_net);
-static void devlink_net_set(struct devlink *devlink, struct net *net)
+static void __devlink_net_set(struct devlink *devlink, struct net *net)
{
write_pnet(&devlink->_net, net);
}
+
+void devlink_net_set(struct devlink *devlink, struct net *net)
+{
+ if (WARN_ON(devlink->registered))
+ return;
+ __devlink_net_set(devlink, net);
+}
+EXPORT_SYMBOL_GPL(devlink_net_set);
static struct devlink *devlink_get_from_attrs(struct net *net,
struct nlattr **attrs)
@@ -114,6 +130,8 @@
busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
+
+ lockdep_assert_held(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (strcmp(devlink->dev->bus->name, busname) == 0 &&
@@ -131,7 +149,7 @@
}
static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
- int port_index)
+ unsigned int port_index)
{
struct devlink_port *devlink_port;
@@ -142,7 +160,8 @@
return NULL;
}
-static bool devlink_port_index_exists(struct devlink *devlink, int port_index)
+static bool devlink_port_index_exists(struct devlink *devlink,
+ unsigned int port_index)
{
return devlink_port_get_by_index(devlink, port_index);
}
@@ -328,8 +347,12 @@
struct devlink_region {
struct devlink *devlink;
+ struct devlink_port *port;
struct list_head list;
- const char *name;
+ union {
+ const struct devlink_region_ops *ops;
+ const struct devlink_port_region_ops *port_ops;
+ };
struct list_head snapshot_list;
u32 max_snapshots;
u32 cur_snapshots;
@@ -339,8 +362,6 @@
struct devlink_snapshot {
struct list_head list;
struct devlink_region *region;
- devlink_snapshot_data_dest_t *data_destructor;
- u64 data_len;
u8 *data;
u32 id;
};
@@ -351,7 +372,20 @@
struct devlink_region *region;
list_for_each_entry(region, &devlink->region_list, list)
- if (!strcmp(region->name, region_name))
+ if (!strcmp(region->ops->name, region_name))
+ return region;
+
+ return NULL;
+}
+
+static struct devlink_region *
+devlink_port_region_get_by_name(struct devlink_port *port,
+ const char *region_name)
+{
+ struct devlink_region *region;
+
+ list_for_each_entry(region, &port->region_list, list)
+ if (!strcmp(region->ops->name, region_name))
return region;
return NULL;
@@ -369,27 +403,19 @@
return NULL;
}
-static void devlink_region_snapshot_del(struct devlink_snapshot *snapshot)
-{
- snapshot->region->cur_snapshots--;
- list_del(&snapshot->list);
- (*snapshot->data_destructor)(snapshot->data);
- kfree(snapshot);
-}
-
-#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
-#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
-#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
+#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
+#define DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT BIT(1)
/* The per devlink instance lock is taken by default in the pre-doit
* operation, yet several commands do not require this. The global
* devlink lock is taken and protects from disruption by user-calls.
*/
-#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
+#define DEVLINK_NL_FLAG_NO_LOCK BIT(2)
static int devlink_nl_pre_doit(const struct genl_ops *ops,
struct sk_buff *skb, struct genl_info *info)
{
+ struct devlink_port *devlink_port;
struct devlink *devlink;
int err;
@@ -401,27 +427,18 @@
}
if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
mutex_lock(&devlink->lock);
- if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
- info->user_ptr[0] = devlink;
- } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
- struct devlink_port *devlink_port;
-
+ info->user_ptr[0] = devlink;
+ if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
devlink_port = devlink_port_get_from_info(devlink, info);
if (IS_ERR(devlink_port)) {
err = PTR_ERR(devlink_port);
goto unlock;
}
- info->user_ptr[0] = devlink_port;
- }
- if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
- struct devlink_sb *devlink_sb;
-
- devlink_sb = devlink_sb_get_from_info(devlink, info);
- if (IS_ERR(devlink_sb)) {
- err = PTR_ERR(devlink_sb);
- goto unlock;
- }
- info->user_ptr[1] = devlink_sb;
+ info->user_ptr[1] = devlink_port;
+ } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT) {
+ devlink_port = devlink_port_get_from_info(devlink, info);
+ if (!IS_ERR(devlink_port))
+ info->user_ptr[1] = devlink_port;
}
return 0;
@@ -437,7 +454,7 @@
{
struct devlink *devlink;
- devlink = devlink_get_from_info(info);
+ devlink = info->user_ptr[0];
if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
mutex_unlock(&devlink->lock);
mutex_unlock(&devlink_mutex);
@@ -462,10 +479,132 @@
return 0;
}
+struct devlink_reload_combination {
+ enum devlink_reload_action action;
+ enum devlink_reload_limit limit;
+};
+
+static const struct devlink_reload_combination devlink_reload_invalid_combinations[] = {
+ {
+ /* can't reinitialize driver with no down time */
+ .action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ .limit = DEVLINK_RELOAD_LIMIT_NO_RESET,
+ },
+};
+
+static bool
+devlink_reload_combination_is_invalid(enum devlink_reload_action action,
+ enum devlink_reload_limit limit)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++)
+ if (devlink_reload_invalid_combinations[i].action == action &&
+ devlink_reload_invalid_combinations[i].limit == limit)
+ return true;
+ return false;
+}
+
+static bool
+devlink_reload_action_is_supported(struct devlink *devlink, enum devlink_reload_action action)
+{
+ return test_bit(action, &devlink->ops->reload_actions);
+}
+
+static bool
+devlink_reload_limit_is_supported(struct devlink *devlink, enum devlink_reload_limit limit)
+{
+ return test_bit(limit, &devlink->ops->reload_limits);
+}
+
+static int devlink_reload_stat_put(struct sk_buff *msg,
+ enum devlink_reload_limit limit, u32 value)
+{
+ struct nlattr *reload_stats_entry;
+
+ reload_stats_entry = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS_ENTRY);
+ if (!reload_stats_entry)
+ return -EMSGSIZE;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_STATS_LIMIT, limit) ||
+ nla_put_u32(msg, DEVLINK_ATTR_RELOAD_STATS_VALUE, value))
+ goto nla_put_failure;
+ nla_nest_end(msg, reload_stats_entry);
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, reload_stats_entry);
+ return -EMSGSIZE;
+}
+
+static int devlink_reload_stats_put(struct sk_buff *msg, struct devlink *devlink, bool is_remote)
+{
+ struct nlattr *reload_stats_attr, *act_info, *act_stats;
+ int i, j, stat_idx;
+ u32 value;
+
+ if (!is_remote)
+ reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_STATS);
+ else
+ reload_stats_attr = nla_nest_start(msg, DEVLINK_ATTR_REMOTE_RELOAD_STATS);
+
+ if (!reload_stats_attr)
+ return -EMSGSIZE;
+
+ for (i = 0; i <= DEVLINK_RELOAD_ACTION_MAX; i++) {
+ if ((!is_remote &&
+ !devlink_reload_action_is_supported(devlink, i)) ||
+ i == DEVLINK_RELOAD_ACTION_UNSPEC)
+ continue;
+ act_info = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_INFO);
+ if (!act_info)
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_ACTION, i))
+ goto action_info_nest_cancel;
+ act_stats = nla_nest_start(msg, DEVLINK_ATTR_RELOAD_ACTION_STATS);
+ if (!act_stats)
+ goto action_info_nest_cancel;
+
+ for (j = 0; j <= DEVLINK_RELOAD_LIMIT_MAX; j++) {
+ /* Remote stats are shown even if not locally supported.
+ * Stats of actions with unspecified limit are shown
+ * though drivers don't need to register unspecified
+ * limit.
+ */
+ if ((!is_remote && j != DEVLINK_RELOAD_LIMIT_UNSPEC &&
+ !devlink_reload_limit_is_supported(devlink, j)) ||
+ devlink_reload_combination_is_invalid(i, j))
+ continue;
+
+ stat_idx = j * __DEVLINK_RELOAD_ACTION_MAX + i;
+ if (!is_remote)
+ value = devlink->stats.reload_stats[stat_idx];
+ else
+ value = devlink->stats.remote_reload_stats[stat_idx];
+ if (devlink_reload_stat_put(msg, j, value))
+ goto action_stats_nest_cancel;
+ }
+ nla_nest_end(msg, act_stats);
+ nla_nest_end(msg, act_info);
+ }
+ nla_nest_end(msg, reload_stats_attr);
+ return 0;
+
+action_stats_nest_cancel:
+ nla_nest_cancel(msg, act_stats);
+action_info_nest_cancel:
+ nla_nest_cancel(msg, act_info);
+nla_put_failure:
+ nla_nest_cancel(msg, reload_stats_attr);
+ return -EMSGSIZE;
+}
+
static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
enum devlink_command cmd, u32 portid,
u32 seq, int flags)
{
+ struct nlattr *dev_stats;
void *hdr;
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
@@ -474,10 +613,24 @@
if (devlink_nl_put_handle(msg, devlink))
goto nla_put_failure;
+ if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
+ goto nla_put_failure;
+ dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
+ if (!dev_stats)
+ goto nla_put_failure;
+
+ if (devlink_reload_stats_put(msg, devlink, false))
+ goto dev_stats_nest_cancel;
+ if (devlink_reload_stats_put(msg, devlink, true))
+ goto dev_stats_nest_cancel;
+
+ nla_nest_end(msg, dev_stats);
genlmsg_end(msg, hdr);
return 0;
+dev_stats_nest_cancel:
+ nla_nest_cancel(msg, dev_stats);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
@@ -509,26 +662,103 @@
{
struct devlink_port_attrs *attrs = &devlink_port->attrs;
- if (!attrs->set)
+ if (!devlink_port->attrs_set)
return 0;
+ if (attrs->lanes) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_LANES, attrs->lanes))
+ return -EMSGSIZE;
+ }
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_SPLITTABLE, attrs->splittable))
+ return -EMSGSIZE;
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
return -EMSGSIZE;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, attrs->port_number))
- return -EMSGSIZE;
- if (!attrs->split)
- return 0;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, attrs->port_number))
- return -EMSGSIZE;
- if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
- attrs->split_subport_number))
- return -EMSGSIZE;
+ switch (devlink_port->attrs.flavour) {
+ case DEVLINK_PORT_FLAVOUR_PCI_PF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_pf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_pf.pf))
+ return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_pf.external))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_VF:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_CONTROLLER_NUMBER,
+ attrs->pci_vf.controller) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_PF_NUMBER, attrs->pci_vf.pf) ||
+ nla_put_u16(msg, DEVLINK_ATTR_PORT_PCI_VF_NUMBER, attrs->pci_vf.vf))
+ return -EMSGSIZE;
+ if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_vf.external))
+ return -EMSGSIZE;
+ break;
+ case DEVLINK_PORT_FLAVOUR_PHYSICAL:
+ case DEVLINK_PORT_FLAVOUR_CPU:
+ case DEVLINK_PORT_FLAVOUR_DSA:
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER,
+ attrs->phys.port_number))
+ return -EMSGSIZE;
+ if (!attrs->split)
+ return 0;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
+ attrs->phys.port_number))
+ return -EMSGSIZE;
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
+ attrs->phys.split_subport_number))
+ return -EMSGSIZE;
+ break;
+ default:
+ break;
+ }
return 0;
+}
+
+static int
+devlink_nl_port_function_attrs_put(struct sk_buff *msg, struct devlink_port *port,
+ struct netlink_ext_ack *extack)
+{
+ struct devlink *devlink = port->devlink;
+ const struct devlink_ops *ops;
+ struct nlattr *function_attr;
+ bool empty_nest = true;
+ int err = 0;
+
+ function_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PORT_FUNCTION);
+ if (!function_attr)
+ return -EMSGSIZE;
+
+ ops = devlink->ops;
+ if (ops->port_function_hw_addr_get) {
+ int hw_addr_len;
+ u8 hw_addr[MAX_ADDR_LEN];
+
+ err = ops->port_function_hw_addr_get(devlink, port, hw_addr, &hw_addr_len, extack);
+ if (err == -EOPNOTSUPP) {
+ /* Port function attributes are optional for a port. If port doesn't
+ * support function attribute, returning -EOPNOTSUPP is not an error.
+ */
+ err = 0;
+ goto out;
+ } else if (err) {
+ goto out;
+ }
+ err = nla_put(msg, DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR, hw_addr_len, hw_addr);
+ if (err)
+ goto out;
+ empty_nest = false;
+ }
+
+out:
+ if (err || empty_nest)
+ nla_nest_cancel(msg, function_attr);
+ else
+ nla_nest_end(msg, function_attr);
+ return err;
}
static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
struct devlink_port *devlink_port,
enum devlink_command cmd, u32 portid,
- u32 seq, int flags)
+ u32 seq, int flags,
+ struct netlink_ext_ack *extack)
{
void *hdr;
@@ -540,21 +770,26 @@
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
goto nla_put_failure;
+
+ /* Hold rtnl lock while accessing port's netdev attributes. */
+ rtnl_lock();
+ spin_lock_bh(&devlink_port->type_lock);
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
- goto nla_put_failure;
+ goto nla_put_failure_type_locked;
if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
devlink_port->desired_type))
- goto nla_put_failure;
+ goto nla_put_failure_type_locked;
if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
+ struct net *net = devlink_net(devlink_port->devlink);
struct net_device *netdev = devlink_port->type_dev;
- if (netdev &&
+ if (netdev && net_eq(net, dev_net(netdev)) &&
(nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
netdev->ifindex) ||
nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
netdev->name)))
- goto nla_put_failure;
+ goto nla_put_failure_type_locked;
}
if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
struct ib_device *ibdev = devlink_port->type_dev;
@@ -562,14 +797,21 @@
if (ibdev &&
nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
ibdev->name))
- goto nla_put_failure;
+ goto nla_put_failure_type_locked;
}
+ spin_unlock_bh(&devlink_port->type_lock);
+ rtnl_unlock();
if (devlink_nl_port_attrs_put(msg, devlink_port))
+ goto nla_put_failure;
+ if (devlink_nl_port_function_attrs_put(msg, devlink_port, extack))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return 0;
+nla_put_failure_type_locked:
+ spin_unlock_bh(&devlink_port->type_lock);
+ rtnl_unlock();
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
@@ -591,7 +833,8 @@
if (!msg)
return;
- err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
+ err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0,
+ NULL);
if (err) {
nlmsg_free(msg);
return;
@@ -654,7 +897,7 @@
static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
- struct devlink_port *devlink_port = info->user_ptr[0];
+ struct devlink_port *devlink_port = info->user_ptr[1];
struct devlink *devlink = devlink_port->devlink;
struct sk_buff *msg;
int err;
@@ -665,7 +908,8 @@
err = devlink_nl_port_fill(msg, devlink, devlink_port,
DEVLINK_CMD_PORT_NEW,
- info->snd_portid, info->snd_seq, 0);
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
if (err) {
nlmsg_free(msg);
return err;
@@ -697,7 +941,8 @@
DEVLINK_CMD_NEW,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
- NLM_F_MULTI);
+ NLM_F_MULTI,
+ cb->extack);
if (err) {
mutex_unlock(&devlink->lock);
goto out;
@@ -720,9 +965,7 @@
{
int err;
- if (devlink->ops && devlink->ops->port_type_set) {
- if (port_type == DEVLINK_PORT_TYPE_NOTSET)
- return -EINVAL;
+ if (devlink->ops->port_type_set) {
if (port_type == devlink_port->type)
return 0;
err = devlink->ops->port_type_set(devlink_port, port_type);
@@ -735,10 +978,71 @@
return -EOPNOTSUPP;
}
+static int
+devlink_port_function_hw_addr_set(struct devlink *devlink, struct devlink_port *port,
+ const struct nlattr *attr, struct netlink_ext_ack *extack)
+{
+ const struct devlink_ops *ops;
+ const u8 *hw_addr;
+ int hw_addr_len;
+ int err;
+
+ hw_addr = nla_data(attr);
+ hw_addr_len = nla_len(attr);
+ if (hw_addr_len > MAX_ADDR_LEN) {
+ NL_SET_ERR_MSG_MOD(extack, "Port function hardware address too long");
+ return -EINVAL;
+ }
+ if (port->type == DEVLINK_PORT_TYPE_ETH) {
+ if (hw_addr_len != ETH_ALEN) {
+ NL_SET_ERR_MSG_MOD(extack, "Address must be 6 bytes for Ethernet device");
+ return -EINVAL;
+ }
+ if (!is_unicast_ether_addr(hw_addr)) {
+ NL_SET_ERR_MSG_MOD(extack, "Non-unicast hardware address unsupported");
+ return -EINVAL;
+ }
+ }
+
+ ops = devlink->ops;
+ if (!ops->port_function_hw_addr_set) {
+ NL_SET_ERR_MSG_MOD(extack, "Port doesn't support function attributes");
+ return -EOPNOTSUPP;
+ }
+
+ err = ops->port_function_hw_addr_set(devlink, port, hw_addr, hw_addr_len, extack);
+ if (err)
+ return err;
+
+ devlink_port_notify(port, DEVLINK_CMD_PORT_NEW);
+ return 0;
+}
+
+static int
+devlink_port_function_set(struct devlink *devlink, struct devlink_port *port,
+ const struct nlattr *attr, struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb[DEVLINK_PORT_FUNCTION_ATTR_MAX + 1];
+ int err;
+
+ err = nla_parse_nested(tb, DEVLINK_PORT_FUNCTION_ATTR_MAX, attr,
+ devlink_function_nl_policy, extack);
+ if (err < 0) {
+ NL_SET_ERR_MSG_MOD(extack, "Fail to parse port function attributes");
+ return err;
+ }
+
+ attr = tb[DEVLINK_PORT_FUNCTION_ATTR_HW_ADDR];
+ if (attr)
+ err = devlink_port_function_hw_addr_set(devlink, port, attr, extack);
+
+ return err;
+}
+
static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
- struct devlink_port *devlink_port = info->user_ptr[0];
+ struct devlink_port *devlink_port = info->user_ptr[1];
struct devlink *devlink = devlink_port->devlink;
int err;
@@ -750,6 +1054,16 @@
if (err)
return err;
}
+
+ if (info->attrs[DEVLINK_ATTR_PORT_FUNCTION]) {
+ struct nlattr *attr = info->attrs[DEVLINK_ATTR_PORT_FUNCTION];
+ struct netlink_ext_ack *extack = info->extack;
+
+ err = devlink_port_function_set(devlink, devlink_port, attr, extack);
+ if (err)
+ return err;
+ }
+
return 0;
}
@@ -757,7 +1071,7 @@
u32 count, struct netlink_ext_ack *extack)
{
- if (devlink->ops && devlink->ops->port_split)
+ if (devlink->ops->port_split)
return devlink->ops->port_split(devlink, port_index, count,
extack);
return -EOPNOTSUPP;
@@ -767,6 +1081,7 @@
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
+ struct devlink_port *devlink_port;
u32 port_index;
u32 count;
@@ -774,8 +1089,27 @@
!info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
return -EINVAL;
+ devlink_port = devlink_port_get_from_info(devlink, info);
port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
+
+ if (IS_ERR(devlink_port))
+ return -EINVAL;
+
+ if (!devlink_port->attrs.splittable) {
+ /* Split ports cannot be split. */
+ if (devlink_port->attrs.split)
+ NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split further");
+ else
+ NL_SET_ERR_MSG_MOD(info->extack, "Port cannot be split");
+ return -EINVAL;
+ }
+
+ if (count < 2 || !is_power_of_2(count) || count > devlink_port->attrs.lanes) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid split count");
+ return -EINVAL;
+ }
+
return devlink_port_split(devlink, port_index, count, info->extack);
}
@@ -783,7 +1117,7 @@
struct netlink_ext_ack *extack)
{
- if (devlink->ops && devlink->ops->port_unsplit)
+ if (devlink->ops->port_unsplit)
return devlink->ops->port_unsplit(devlink, port_index, extack);
return -EOPNOTSUPP;
}
@@ -843,9 +1177,13 @@
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb = info->user_ptr[1];
+ struct devlink_sb *devlink_sb;
struct sk_buff *msg;
int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -932,6 +1270,9 @@
if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
pool_info.threshold_type))
goto nla_put_failure;
+ if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_CELL_SIZE,
+ pool_info.cell_size))
+ goto nla_put_failure;
genlmsg_end(msg, hdr);
return 0;
@@ -945,17 +1286,21 @@
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb = info->user_ptr[1];
+ struct devlink_sb *devlink_sb;
struct sk_buff *msg;
u16 pool_index;
int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
if (err)
return err;
- if (!devlink->ops || !devlink->ops->sb_pool_get)
+ if (!devlink->ops->sb_pool_get)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
@@ -1006,12 +1351,12 @@
struct devlink_sb *devlink_sb;
int start = cb->args[0];
int idx = 0;
- int err;
+ int err = 0;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
- !devlink->ops || !devlink->ops->sb_pool_get)
+ !devlink->ops->sb_pool_get)
continue;
mutex_lock(&devlink->lock);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
@@ -1019,7 +1364,9 @@
devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
- if (err && err != -EOPNOTSUPP) {
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
mutex_unlock(&devlink->lock);
goto out;
}
@@ -1029,20 +1376,24 @@
out:
mutex_unlock(&devlink_mutex);
+ if (err != -EMSGSIZE)
+ return err;
+
cb->args[0] = idx;
return msg->len;
}
static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
u16 pool_index, u32 size,
- enum devlink_sb_threshold_type threshold_type)
+ enum devlink_sb_threshold_type threshold_type,
+ struct netlink_ext_ack *extack)
{
const struct devlink_ops *ops = devlink->ops;
- if (ops && ops->sb_pool_set)
+ if (ops->sb_pool_set)
return ops->sb_pool_set(devlink, sb_index, pool_index,
- size, threshold_type);
+ size, threshold_type, extack);
return -EOPNOTSUPP;
}
@@ -1050,11 +1401,15 @@
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb = info->user_ptr[1];
enum devlink_sb_threshold_type threshold_type;
+ struct devlink_sb *devlink_sb;
u16 pool_index;
u32 size;
int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
@@ -1070,7 +1425,8 @@
size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
return devlink_sb_pool_set(devlink, devlink_sb->index,
- pool_index, size, threshold_type);
+ pool_index, size, threshold_type,
+ info->extack);
}
static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
@@ -1135,19 +1491,23 @@
static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
- struct devlink_port *devlink_port = info->user_ptr[0];
+ struct devlink_port *devlink_port = info->user_ptr[1];
struct devlink *devlink = devlink_port->devlink;
- struct devlink_sb *devlink_sb = info->user_ptr[1];
+ struct devlink_sb *devlink_sb;
struct sk_buff *msg;
u16 pool_index;
int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
if (err)
return err;
- if (!devlink->ops || !devlink->ops->sb_port_pool_get)
+ if (!devlink->ops->sb_port_pool_get)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
@@ -1204,12 +1564,12 @@
struct devlink_sb *devlink_sb;
int start = cb->args[0];
int idx = 0;
- int err;
+ int err = 0;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
- !devlink->ops || !devlink->ops->sb_port_pool_get)
+ !devlink->ops->sb_port_pool_get)
continue;
mutex_lock(&devlink->lock);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
@@ -1217,7 +1577,9 @@
devlink, devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
- if (err && err != -EOPNOTSUPP) {
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
mutex_unlock(&devlink->lock);
goto out;
}
@@ -1227,31 +1589,40 @@
out:
mutex_unlock(&devlink_mutex);
+ if (err != -EMSGSIZE)
+ return err;
+
cb->args[0] = idx;
return msg->len;
}
static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
unsigned int sb_index, u16 pool_index,
- u32 threshold)
+ u32 threshold,
+ struct netlink_ext_ack *extack)
{
const struct devlink_ops *ops = devlink_port->devlink->ops;
- if (ops && ops->sb_port_pool_set)
+ if (ops->sb_port_pool_set)
return ops->sb_port_pool_set(devlink_port, sb_index,
- pool_index, threshold);
+ pool_index, threshold, extack);
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
- struct devlink_port *devlink_port = info->user_ptr[0];
- struct devlink_sb *devlink_sb = info->user_ptr[1];
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_sb *devlink_sb;
u16 pool_index;
u32 threshold;
int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
@@ -1263,7 +1634,7 @@
threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
- pool_index, threshold);
+ pool_index, threshold, info->extack);
}
static int
@@ -1334,13 +1705,17 @@
static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
- struct devlink_port *devlink_port = info->user_ptr[0];
+ struct devlink_port *devlink_port = info->user_ptr[1];
struct devlink *devlink = devlink_port->devlink;
- struct devlink_sb *devlink_sb = info->user_ptr[1];
+ struct devlink_sb *devlink_sb;
struct sk_buff *msg;
enum devlink_sb_pool_type pool_type;
u16 tc_index;
int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
err = devlink_sb_pool_type_get_from_info(info, &pool_type);
if (err)
@@ -1351,7 +1726,7 @@
if (err)
return err;
- if (!devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
+ if (!devlink->ops->sb_tc_pool_bind_get)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
@@ -1430,12 +1805,12 @@
struct devlink_sb *devlink_sb;
int start = cb->args[0];
int idx = 0;
- int err;
+ int err = 0;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
- !devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
+ !devlink->ops->sb_tc_pool_bind_get)
continue;
mutex_lock(&devlink->lock);
@@ -1445,7 +1820,9 @@
devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
- if (err && err != -EOPNOTSUPP) {
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
mutex_unlock(&devlink->lock);
goto out;
}
@@ -1455,6 +1832,9 @@
out:
mutex_unlock(&devlink_mutex);
+ if (err != -EMSGSIZE)
+ return err;
+
cb->args[0] = idx;
return msg->len;
}
@@ -1462,28 +1842,34 @@
static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
- u16 pool_index, u32 threshold)
+ u16 pool_index, u32 threshold,
+ struct netlink_ext_ack *extack)
{
const struct devlink_ops *ops = devlink_port->devlink->ops;
- if (ops && ops->sb_tc_pool_bind_set)
+ if (ops->sb_tc_pool_bind_set)
return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
tc_index, pool_type,
- pool_index, threshold);
+ pool_index, threshold, extack);
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
- struct devlink_port *devlink_port = info->user_ptr[0];
- struct devlink_sb *devlink_sb = info->user_ptr[1];
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink *devlink = info->user_ptr[0];
enum devlink_sb_pool_type pool_type;
+ struct devlink_sb *devlink_sb;
u16 tc_index;
u16 pool_index;
u32 threshold;
int err;
+
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
err = devlink_sb_pool_type_get_from_info(info, &pool_type);
if (err)
@@ -1505,17 +1891,21 @@
threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
tc_index, pool_type,
- pool_index, threshold);
+ pool_index, threshold, info->extack);
}
static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb = info->user_ptr[1];
const struct devlink_ops *ops = devlink->ops;
+ struct devlink_sb *devlink_sb;
- if (ops && ops->sb_occ_snapshot)
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ if (ops->sb_occ_snapshot)
return ops->sb_occ_snapshot(devlink, devlink_sb->index);
return -EOPNOTSUPP;
}
@@ -1524,10 +1914,14 @@
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
- struct devlink_sb *devlink_sb = info->user_ptr[1];
const struct devlink_ops *ops = devlink->ops;
+ struct devlink_sb *devlink_sb;
- if (ops && ops->sb_occ_max_clear)
+ devlink_sb = devlink_sb_get_from_info(devlink, info);
+ if (IS_ERR(devlink_sb))
+ return PTR_ERR(devlink_sb);
+
+ if (ops->sb_occ_max_clear)
return ops->sb_occ_max_clear(devlink, devlink_sb->index);
return -EOPNOTSUPP;
}
@@ -1537,7 +1931,8 @@
u32 seq, int flags)
{
const struct devlink_ops *ops = devlink->ops;
- u8 inline_mode, encap_mode;
+ enum devlink_eswitch_encap_mode encap_mode;
+ u8 inline_mode;
void *hdr;
int err = 0;
u16 mode;
@@ -1590,12 +1985,8 @@
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
- const struct devlink_ops *ops = devlink->ops;
struct sk_buff *msg;
int err;
-
- if (!ops)
- return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -1617,18 +2008,16 @@
{
struct devlink *devlink = info->user_ptr[0];
const struct devlink_ops *ops = devlink->ops;
- u8 inline_mode, encap_mode;
+ enum devlink_eswitch_encap_mode encap_mode;
+ u8 inline_mode;
int err = 0;
u16 mode;
-
- if (!ops)
- return -EOPNOTSUPP;
if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
if (!ops->eswitch_mode_set)
return -EOPNOTSUPP;
mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
- err = ops->eswitch_mode_set(devlink, mode);
+ err = ops->eswitch_mode_set(devlink, mode, info->extack);
if (err)
return err;
}
@@ -1638,7 +2027,8 @@
return -EOPNOTSUPP;
inline_mode = nla_get_u8(
info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
- err = ops->eswitch_inline_mode_set(devlink, inline_mode);
+ err = ops->eswitch_inline_mode_set(devlink, inline_mode,
+ info->extack);
if (err)
return err;
}
@@ -1647,7 +2037,8 @@
if (!ops->eswitch_encap_mode_set)
return -EOPNOTSUPP;
encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
- err = ops->eswitch_encap_mode_set(devlink, encap_mode);
+ err = ops->eswitch_encap_mode_set(devlink, encap_mode,
+ info->extack);
if (err)
return err;
}
@@ -1662,7 +2053,7 @@
struct devlink_dpipe_field *field = &header->fields[match->field_id];
struct nlattr *match_attr;
- match_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_MATCH);
+ match_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_MATCH);
if (!match_attr)
return -EMSGSIZE;
@@ -1687,7 +2078,8 @@
{
struct nlattr *matches_attr;
- matches_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
+ matches_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
if (!matches_attr)
return -EMSGSIZE;
@@ -1709,7 +2101,7 @@
struct devlink_dpipe_field *field = &header->fields[action->field_id];
struct nlattr *action_attr;
- action_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ACTION);
+ action_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ACTION);
if (!action_attr)
return -EMSGSIZE;
@@ -1734,7 +2126,8 @@
{
struct nlattr *actions_attr;
- actions_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
+ actions_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
if (!actions_attr)
return -EMSGSIZE;
@@ -1756,7 +2149,7 @@
u64 table_size;
table_size = table->table_ops->size_get(table->priv);
- table_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE);
+ table_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLE);
if (!table_attr)
return -EMSGSIZE;
@@ -1836,7 +2229,7 @@
if (devlink_nl_put_handle(skb, devlink))
goto nla_put_failure;
- tables_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLES);
+ tables_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_TABLES);
if (!tables_attr)
goto nla_put_failure;
@@ -1937,8 +2330,8 @@
int err;
for (i = 0; i < values_count; i++) {
- action_attr = nla_nest_start(skb,
- DEVLINK_ATTR_DPIPE_ACTION_VALUE);
+ action_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ACTION_VALUE);
if (!action_attr)
return -EMSGSIZE;
err = devlink_dpipe_action_value_put(skb, &values[i]);
@@ -1974,8 +2367,8 @@
int err;
for (i = 0; i < values_count; i++) {
- match_attr = nla_nest_start(skb,
- DEVLINK_ATTR_DPIPE_MATCH_VALUE);
+ match_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_MATCH_VALUE);
if (!match_attr)
return -EMSGSIZE;
err = devlink_dpipe_match_value_put(skb, &values[i]);
@@ -1996,7 +2389,7 @@
struct nlattr *entry_attr, *matches_attr, *actions_attr;
int err;
- entry_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ENTRY);
+ entry_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_ENTRY);
if (!entry_attr)
return -EMSGSIZE;
@@ -2008,8 +2401,8 @@
entry->counter, DEVLINK_ATTR_PAD))
goto nla_put_failure;
- matches_attr = nla_nest_start(skb,
- DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
+ matches_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
if (!matches_attr)
goto nla_put_failure;
@@ -2021,8 +2414,8 @@
}
nla_nest_end(skb, matches_attr);
- actions_attr = nla_nest_start(skb,
- DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
+ actions_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
if (!actions_attr)
goto nla_put_failure;
@@ -2047,11 +2440,11 @@
static struct devlink_dpipe_table *
devlink_dpipe_table_find(struct list_head *dpipe_tables,
- const char *table_name)
+ const char *table_name, struct devlink *devlink)
{
struct devlink_dpipe_table *table;
-
- list_for_each_entry_rcu(table, dpipe_tables, list) {
+ list_for_each_entry_rcu(table, dpipe_tables, list,
+ lockdep_is_held(&devlink->lock)) {
if (!strcmp(table->name, table_name))
return table;
}
@@ -2079,8 +2472,8 @@
devlink = dump_ctx->info->user_ptr[0];
if (devlink_nl_put_handle(dump_ctx->skb, devlink))
goto nla_put_failure;
- dump_ctx->nest = nla_nest_start(dump_ctx->skb,
- DEVLINK_ATTR_DPIPE_ENTRIES);
+ dump_ctx->nest = nla_nest_start_noflag(dump_ctx->skb,
+ DEVLINK_ATTR_DPIPE_ENTRIES);
if (!dump_ctx->nest)
goto nla_put_failure;
return 0;
@@ -2170,7 +2563,7 @@
table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name);
+ table_name, devlink);
if (!table)
return -EINVAL;
@@ -2190,7 +2583,8 @@
for (i = 0; i < header->fields_count; i++) {
field = &header->fields[i];
- field_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_FIELD);
+ field_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_FIELD);
if (!field_attr)
return -EMSGSIZE;
if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
@@ -2213,7 +2607,7 @@
struct nlattr *fields_attr, *header_attr;
int err;
- header_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER);
+ header_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADER);
if (!header_attr)
return -EMSGSIZE;
@@ -2222,7 +2616,8 @@
nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
goto nla_put_failure;
- fields_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
+ fields_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
if (!fields_attr)
goto nla_put_failure;
@@ -2269,7 +2664,7 @@
if (devlink_nl_put_handle(skb, devlink))
goto nla_put_failure;
- headers_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADERS);
+ headers_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_DPIPE_HEADERS);
if (!headers_attr)
goto nla_put_failure;
@@ -2324,7 +2719,7 @@
struct devlink_dpipe_table *table;
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name);
+ table_name, devlink);
if (!table)
return -EINVAL;
@@ -2493,7 +2888,7 @@
struct nlattr *child_resource_attr;
struct nlattr *resource_attr;
- resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE);
+ resource_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_RESOURCE);
if (!resource_attr)
return -EMSGSIZE;
@@ -2517,7 +2912,8 @@
resource->size_valid))
goto nla_put_failure;
- child_resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
+ child_resource_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_RESOURCE_LIST);
if (!child_resource_attr)
goto nla_put_failure;
@@ -2568,7 +2964,8 @@
if (devlink_nl_put_handle(skb, devlink))
goto nla_put_failure;
- resources_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
+ resources_attr = nla_nest_start_noflag(skb,
+ DEVLINK_ATTR_RESOURCE_LIST);
if (!resources_attr)
goto nla_put_failure;
@@ -2640,12 +3037,226 @@
return err;
}
+static struct net *devlink_netns_get(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *netns_pid_attr = info->attrs[DEVLINK_ATTR_NETNS_PID];
+ struct nlattr *netns_fd_attr = info->attrs[DEVLINK_ATTR_NETNS_FD];
+ struct nlattr *netns_id_attr = info->attrs[DEVLINK_ATTR_NETNS_ID];
+ struct net *net;
+
+ if (!!netns_pid_attr + !!netns_fd_attr + !!netns_id_attr > 1) {
+ NL_SET_ERR_MSG_MOD(info->extack, "multiple netns identifying attributes specified");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (netns_pid_attr) {
+ net = get_net_ns_by_pid(nla_get_u32(netns_pid_attr));
+ } else if (netns_fd_attr) {
+ net = get_net_ns_by_fd(nla_get_u32(netns_fd_attr));
+ } else if (netns_id_attr) {
+ net = get_net_ns_by_id(sock_net(skb->sk),
+ nla_get_u32(netns_id_attr));
+ if (!net)
+ net = ERR_PTR(-EINVAL);
+ } else {
+ WARN_ON(1);
+ net = ERR_PTR(-EINVAL);
+ }
+ if (IS_ERR(net)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Unknown network namespace");
+ return ERR_PTR(-EINVAL);
+ }
+ if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
+ put_net(net);
+ return ERR_PTR(-EPERM);
+ }
+ return net;
+}
+
+static void devlink_param_notify(struct devlink *devlink,
+ unsigned int port_index,
+ struct devlink_param_item *param_item,
+ enum devlink_command cmd);
+
+static void devlink_ns_change_notify(struct devlink *devlink,
+ struct net *dest_net, struct net *curr_net,
+ bool new)
+{
+ struct devlink_param_item *param_item;
+ enum devlink_command cmd;
+
+ /* Userspace needs to be notified about devlink objects
+ * removed from original and entering new network namespace.
+ * The rest of the devlink objects are re-created during
+ * reload process so the notifications are generated separatelly.
+ */
+
+ if (!dest_net || net_eq(dest_net, curr_net))
+ return;
+
+ if (new)
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+
+ cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL;
+ list_for_each_entry(param_item, &devlink->param_list, list)
+ devlink_param_notify(devlink, 0, param_item, cmd);
+
+ if (!new)
+ devlink_notify(devlink, DEVLINK_CMD_DEL);
+}
+
+static bool devlink_reload_supported(const struct devlink_ops *ops)
+{
+ return ops->reload_down && ops->reload_up;
+}
+
+static void devlink_reload_failed_set(struct devlink *devlink,
+ bool reload_failed)
+{
+ if (devlink->reload_failed == reload_failed)
+ return;
+ devlink->reload_failed = reload_failed;
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+}
+
+bool devlink_is_reload_failed(const struct devlink *devlink)
+{
+ return devlink->reload_failed;
+}
+EXPORT_SYMBOL_GPL(devlink_is_reload_failed);
+
+static void
+__devlink_reload_stats_update(struct devlink *devlink, u32 *reload_stats,
+ enum devlink_reload_limit limit, u32 actions_performed)
+{
+ unsigned long actions = actions_performed;
+ int stat_idx;
+ int action;
+
+ for_each_set_bit(action, &actions, __DEVLINK_RELOAD_ACTION_MAX) {
+ stat_idx = limit * __DEVLINK_RELOAD_ACTION_MAX + action;
+ reload_stats[stat_idx]++;
+ }
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+}
+
+static void
+devlink_reload_stats_update(struct devlink *devlink, enum devlink_reload_limit limit,
+ u32 actions_performed)
+{
+ __devlink_reload_stats_update(devlink, devlink->stats.reload_stats, limit,
+ actions_performed);
+}
+
+/**
+ * devlink_remote_reload_actions_performed - Update devlink on reload actions
+ * performed which are not a direct result of devlink reload call.
+ *
+ * This should be called by a driver after performing reload actions in case it was not
+ * a result of devlink reload call. For example fw_activate was performed as a result
+ * of devlink reload triggered fw_activate on another host.
+ * The motivation for this function is to keep data on reload actions performed on this
+ * function whether it was done due to direct devlink reload call or not.
+ *
+ * @devlink: devlink
+ * @limit: reload limit
+ * @actions_performed: bitmask of actions performed
+ */
+void devlink_remote_reload_actions_performed(struct devlink *devlink,
+ enum devlink_reload_limit limit,
+ u32 actions_performed)
+{
+ if (WARN_ON(!actions_performed ||
+ actions_performed & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
+ actions_performed >= BIT(__DEVLINK_RELOAD_ACTION_MAX) ||
+ limit > DEVLINK_RELOAD_LIMIT_MAX))
+ return;
+
+ __devlink_reload_stats_update(devlink, devlink->stats.remote_reload_stats, limit,
+ actions_performed);
+}
+EXPORT_SYMBOL_GPL(devlink_remote_reload_actions_performed);
+
+static int devlink_reload(struct devlink *devlink, struct net *dest_net,
+ enum devlink_reload_action action, enum devlink_reload_limit limit,
+ u32 *actions_performed, struct netlink_ext_ack *extack)
+{
+ u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE];
+ struct net *curr_net;
+ int err;
+
+ if (!devlink->reload_enabled)
+ return -EOPNOTSUPP;
+
+ memcpy(remote_reload_stats, devlink->stats.remote_reload_stats,
+ sizeof(remote_reload_stats));
+
+ curr_net = devlink_net(devlink);
+ devlink_ns_change_notify(devlink, dest_net, curr_net, false);
+ err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack);
+ if (err)
+ return err;
+
+ if (dest_net && !net_eq(dest_net, curr_net))
+ __devlink_net_set(devlink, dest_net);
+
+ err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack);
+ devlink_reload_failed_set(devlink, !!err);
+ if (err)
+ return err;
+
+ devlink_ns_change_notify(devlink, dest_net, curr_net, true);
+ WARN_ON(!(*actions_performed & BIT(action)));
+ /* Catch driver on updating the remote action within devlink reload */
+ WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats,
+ sizeof(remote_reload_stats)));
+ devlink_reload_stats_update(devlink, limit, *actions_performed);
+ return 0;
+}
+
+static int
+devlink_nl_reload_actions_performed_snd(struct devlink *devlink, u32 actions_performed,
+ enum devlink_command cmd, struct genl_info *info)
+{
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, &devlink_nl_family, 0, cmd);
+ if (!hdr)
+ goto free_msg;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_bitfield32(msg, DEVLINK_ATTR_RELOAD_ACTIONS_PERFORMED, actions_performed,
+ actions_performed))
+ goto nla_put_failure;
+ genlmsg_end(msg, hdr);
+
+ return genlmsg_reply(msg, info);
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+free_msg:
+ nlmsg_free(msg);
+ return -EMSGSIZE;
+}
+
static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
+ enum devlink_reload_action action;
+ enum devlink_reload_limit limit;
+ struct net *dest_net = NULL;
+ u32 actions_performed;
int err;
- if (!devlink->ops->reload)
+ if (!devlink_reload_supported(devlink->ops))
return -EOPNOTSUPP;
err = devlink_resources_validate(devlink, NULL, info);
@@ -2653,7 +3264,241 @@
NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
return err;
}
- return devlink->ops->reload(devlink, info->extack);
+
+ if (info->attrs[DEVLINK_ATTR_RELOAD_ACTION])
+ action = nla_get_u8(info->attrs[DEVLINK_ATTR_RELOAD_ACTION]);
+ else
+ action = DEVLINK_RELOAD_ACTION_DRIVER_REINIT;
+
+ if (!devlink_reload_action_is_supported(devlink, action)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested reload action is not supported by the driver");
+ return -EOPNOTSUPP;
+ }
+
+ limit = DEVLINK_RELOAD_LIMIT_UNSPEC;
+ if (info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]) {
+ struct nla_bitfield32 limits;
+ u32 limits_selected;
+
+ limits = nla_get_bitfield32(info->attrs[DEVLINK_ATTR_RELOAD_LIMITS]);
+ limits_selected = limits.value & limits.selector;
+ if (!limits_selected) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid limit selected");
+ return -EINVAL;
+ }
+ for (limit = 0 ; limit <= DEVLINK_RELOAD_LIMIT_MAX ; limit++)
+ if (limits_selected & BIT(limit))
+ break;
+ /* UAPI enables multiselection, but currently it is not used */
+ if (limits_selected != BIT(limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Multiselection of limit is not supported");
+ return -EOPNOTSUPP;
+ }
+ if (!devlink_reload_limit_is_supported(devlink, limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested limit is not supported by the driver");
+ return -EOPNOTSUPP;
+ }
+ if (devlink_reload_combination_is_invalid(action, limit)) {
+ NL_SET_ERR_MSG_MOD(info->extack,
+ "Requested limit is invalid for this action");
+ return -EINVAL;
+ }
+ }
+ if (info->attrs[DEVLINK_ATTR_NETNS_PID] ||
+ info->attrs[DEVLINK_ATTR_NETNS_FD] ||
+ info->attrs[DEVLINK_ATTR_NETNS_ID]) {
+ dest_net = devlink_netns_get(skb, info);
+ if (IS_ERR(dest_net))
+ return PTR_ERR(dest_net);
+ }
+
+ err = devlink_reload(devlink, dest_net, action, limit, &actions_performed, info->extack);
+
+ if (dest_net)
+ put_net(dest_net);
+
+ if (err)
+ return err;
+ /* For backward compatibility generate reply only if attributes used by user */
+ if (!info->attrs[DEVLINK_ATTR_RELOAD_ACTION] && !info->attrs[DEVLINK_ATTR_RELOAD_LIMITS])
+ return 0;
+
+ return devlink_nl_reload_actions_performed_snd(devlink, actions_performed,
+ DEVLINK_CMD_RELOAD, info);
+}
+
+static int devlink_nl_flash_update_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ enum devlink_command cmd,
+ struct devlink_flash_notify *params)
+{
+ void *hdr;
+
+ hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS)
+ goto out;
+
+ if (params->status_msg &&
+ nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_MSG,
+ params->status_msg))
+ goto nla_put_failure;
+ if (params->component &&
+ nla_put_string(msg, DEVLINK_ATTR_FLASH_UPDATE_COMPONENT,
+ params->component))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_DONE,
+ params->done, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TOTAL,
+ params->total, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_FLASH_UPDATE_STATUS_TIMEOUT,
+ params->timeout, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+out:
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void __devlink_flash_update_notify(struct devlink *devlink,
+ enum devlink_command cmd,
+ struct devlink_flash_notify *params)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
+ cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
+ cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_flash_update_fill(msg, devlink, cmd, params);
+ if (err)
+ goto out_free_msg;
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+ return;
+
+out_free_msg:
+ nlmsg_free(msg);
+}
+
+void devlink_flash_update_begin_notify(struct devlink *devlink)
+{
+ struct devlink_flash_notify params = {};
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE,
+ ¶ms);
+}
+EXPORT_SYMBOL_GPL(devlink_flash_update_begin_notify);
+
+void devlink_flash_update_end_notify(struct devlink *devlink)
+{
+ struct devlink_flash_notify params = {};
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_END,
+ ¶ms);
+}
+EXPORT_SYMBOL_GPL(devlink_flash_update_end_notify);
+
+void devlink_flash_update_status_notify(struct devlink *devlink,
+ const char *status_msg,
+ const char *component,
+ unsigned long done,
+ unsigned long total)
+{
+ struct devlink_flash_notify params = {
+ .status_msg = status_msg,
+ .component = component,
+ .done = done,
+ .total = total,
+ };
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_STATUS,
+ ¶ms);
+}
+EXPORT_SYMBOL_GPL(devlink_flash_update_status_notify);
+
+void devlink_flash_update_timeout_notify(struct devlink *devlink,
+ const char *status_msg,
+ const char *component,
+ unsigned long timeout)
+{
+ struct devlink_flash_notify params = {
+ .status_msg = status_msg,
+ .component = component,
+ .timeout = timeout,
+ };
+
+ __devlink_flash_update_notify(devlink,
+ DEVLINK_CMD_FLASH_UPDATE_STATUS,
+ ¶ms);
+}
+EXPORT_SYMBOL_GPL(devlink_flash_update_timeout_notify);
+
+static int devlink_nl_cmd_flash_update(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *nla_component, *nla_overwrite_mask;
+ struct devlink_flash_update_params params = {};
+ struct devlink *devlink = info->user_ptr[0];
+ u32 supported_params;
+
+ if (!devlink->ops->flash_update)
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME])
+ return -EINVAL;
+
+ supported_params = devlink->ops->supported_flash_update_params;
+
+ params.file_name = nla_data(info->attrs[DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME]);
+
+ nla_component = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_COMPONENT];
+ if (nla_component) {
+ if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_COMPONENT)) {
+ NL_SET_ERR_MSG_ATTR(info->extack, nla_component,
+ "component update is not supported by this device");
+ return -EOPNOTSUPP;
+ }
+ params.component = nla_data(nla_component);
+ }
+
+ nla_overwrite_mask = info->attrs[DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK];
+ if (nla_overwrite_mask) {
+ struct nla_bitfield32 sections;
+
+ if (!(supported_params & DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK)) {
+ NL_SET_ERR_MSG_ATTR(info->extack, nla_overwrite_mask,
+ "overwrite settings are not supported by this device");
+ return -EOPNOTSUPP;
+ }
+ sections = nla_get_bitfield32(nla_overwrite_mask);
+ params.overwrite_mask = sections.value & sections.selector;
+ }
+
+ return devlink->ops->flash_update(devlink, ¶ms, info->extack);
}
static const struct devlink_param devlink_param_generic[] = {
@@ -2676,6 +3521,41 @@
.id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
.name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
.type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
+ .name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
+ .type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
+ .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
+ .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
+ .name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
+ .type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
+ .name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
+ .type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_RESET_DEV_ON_DRV_PROBE,
+ .name = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_RESET_DEV_ON_DRV_PROBE_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_ROCE_TYPE,
+ },
+ {
+ .id = DEVLINK_PARAM_GENERIC_ID_ENABLE_REMOTE_DEV_RESET,
+ .name = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_NAME,
+ .type = DEVLINK_PARAM_GENERIC_ENABLE_REMOTE_DEV_RESET_TYPE,
},
};
@@ -2781,7 +3661,8 @@
{
struct nlattr *param_value_attr;
- param_value_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUE);
+ param_value_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_PARAM_VALUE);
if (!param_value_attr)
goto nla_put_failure;
@@ -2823,11 +3704,13 @@
}
static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink,
+ unsigned int port_index,
struct devlink_param_item *param_item,
enum devlink_command cmd,
u32 portid, u32 seq, int flags)
{
union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1];
+ bool param_value_set[DEVLINK_PARAM_CMODE_MAX + 1] = {};
const struct devlink_param *param = param_item->param;
struct devlink_param_gset_ctx ctx;
struct nlattr *param_values_list;
@@ -2846,12 +3729,15 @@
return -EOPNOTSUPP;
param_value[i] = param_item->driverinit_value;
} else {
+ if (!param_item->published)
+ continue;
ctx.cmode = i;
err = devlink_param_get(devlink, param, &ctx);
if (err)
return err;
param_value[i] = ctx.val;
}
+ param_value_set[i] = true;
}
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
@@ -2860,7 +3746,14 @@
if (devlink_nl_put_handle(msg, devlink))
goto genlmsg_cancel;
- param_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM);
+
+ if (cmd == DEVLINK_CMD_PORT_PARAM_GET ||
+ cmd == DEVLINK_CMD_PORT_PARAM_NEW ||
+ cmd == DEVLINK_CMD_PORT_PARAM_DEL)
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, port_index))
+ goto genlmsg_cancel;
+
+ param_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_PARAM);
if (!param_attr)
goto genlmsg_cancel;
if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name))
@@ -2874,12 +3767,13 @@
if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type))
goto param_nest_cancel;
- param_values_list = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUES_LIST);
+ param_values_list = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_PARAM_VALUES_LIST);
if (!param_values_list)
goto param_nest_cancel;
for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) {
- if (!devlink_param_cmode_is_supported(param, i))
+ if (!param_value_set[i])
continue;
err = devlink_nl_param_value_fill_one(msg, param->type,
i, param_value[i]);
@@ -2902,18 +3796,22 @@
}
static void devlink_param_notify(struct devlink *devlink,
+ unsigned int port_index,
struct devlink_param_item *param_item,
enum devlink_command cmd)
{
struct sk_buff *msg;
int err;
- WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL);
+ WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL &&
+ cmd != DEVLINK_CMD_PORT_PARAM_NEW &&
+ cmd != DEVLINK_CMD_PORT_PARAM_DEL);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
- err = devlink_nl_param_fill(msg, devlink, param_item, cmd, 0, 0, 0);
+ err = devlink_nl_param_fill(msg, devlink, port_index, param_item, cmd,
+ 0, 0, 0);
if (err) {
nlmsg_free(msg);
return;
@@ -2930,7 +3828,7 @@
struct devlink *devlink;
int start = cb->args[0];
int idx = 0;
- int err;
+ int err = 0;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
@@ -2942,12 +3840,14 @@
idx++;
continue;
}
- err = devlink_nl_param_fill(msg, devlink, param_item,
+ err = devlink_nl_param_fill(msg, devlink, 0, param_item,
DEVLINK_CMD_PARAM_GET,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
NLM_F_MULTI);
- if (err) {
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
mutex_unlock(&devlink->lock);
goto out;
}
@@ -2957,6 +3857,9 @@
}
out:
mutex_unlock(&devlink_mutex);
+
+ if (err != -EMSGSIZE)
+ return err;
cb->args[0] = idx;
return msg->len;
@@ -3038,7 +3941,7 @@
}
static struct devlink_param_item *
-devlink_param_get_from_info(struct devlink *devlink,
+devlink_param_get_from_info(struct list_head *param_list,
struct genl_info *info)
{
char *param_name;
@@ -3047,7 +3950,7 @@
return NULL;
param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]);
- return devlink_param_find_by_name(&devlink->param_list, param_name);
+ return devlink_param_find_by_name(param_list, param_name);
}
static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb,
@@ -3058,7 +3961,7 @@
struct sk_buff *msg;
int err;
- param_item = devlink_param_get_from_info(devlink, info);
+ param_item = devlink_param_get_from_info(&devlink->param_list, info);
if (!param_item)
return -EINVAL;
@@ -3066,7 +3969,7 @@
if (!msg)
return -ENOMEM;
- err = devlink_nl_param_fill(msg, devlink, param_item,
+ err = devlink_nl_param_fill(msg, devlink, 0, param_item,
DEVLINK_CMD_PARAM_GET,
info->snd_portid, info->snd_seq, 0);
if (err) {
@@ -3077,10 +3980,12 @@
return genlmsg_reply(msg, info);
}
-static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
- struct genl_info *info)
+static int __devlink_nl_cmd_param_set_doit(struct devlink *devlink,
+ unsigned int port_index,
+ struct list_head *param_list,
+ struct genl_info *info,
+ enum devlink_command cmd)
{
- struct devlink *devlink = info->user_ptr[0];
enum devlink_param_type param_type;
struct devlink_param_gset_ctx ctx;
enum devlink_param_cmode cmode;
@@ -3089,7 +3994,7 @@
union devlink_param_value value;
int err = 0;
- param_item = devlink_param_get_from_info(devlink, info);
+ param_item = devlink_param_get_from_info(param_list, info);
if (!param_item)
return -EINVAL;
param = param_item->param;
@@ -3129,17 +4034,28 @@
return err;
}
- devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
+ devlink_param_notify(devlink, port_index, param_item, cmd);
return 0;
}
+static int devlink_nl_cmd_param_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+
+ return __devlink_nl_cmd_param_set_doit(devlink, 0, &devlink->param_list,
+ info, DEVLINK_CMD_PARAM_NEW);
+}
+
static int devlink_param_register_one(struct devlink *devlink,
- const struct devlink_param *param)
+ unsigned int port_index,
+ struct list_head *param_list,
+ const struct devlink_param *param,
+ enum devlink_command cmd)
{
struct devlink_param_item *param_item;
- if (devlink_param_find_by_name(&devlink->param_list,
- param->name))
+ if (devlink_param_find_by_name(param_list, param->name))
return -EEXIST;
if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT))
@@ -3152,22 +4068,114 @@
return -ENOMEM;
param_item->param = param;
- list_add_tail(¶m_item->list, &devlink->param_list);
- devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
+ list_add_tail(¶m_item->list, param_list);
+ devlink_param_notify(devlink, port_index, param_item, cmd);
return 0;
}
static void devlink_param_unregister_one(struct devlink *devlink,
- const struct devlink_param *param)
+ unsigned int port_index,
+ struct list_head *param_list,
+ const struct devlink_param *param,
+ enum devlink_command cmd)
{
struct devlink_param_item *param_item;
- param_item = devlink_param_find_by_name(&devlink->param_list,
- param->name);
+ param_item = devlink_param_find_by_name(param_list, param->name);
WARN_ON(!param_item);
- devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_DEL);
+ devlink_param_notify(devlink, port_index, param_item, cmd);
list_del(¶m_item->list);
kfree(param_item);
+}
+
+static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_param_item *param_item;
+ struct devlink_port *devlink_port;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ int idx = 0;
+ int err = 0;
+
+ mutex_lock(&devlink_mutex);
+ list_for_each_entry(devlink, &devlink_list, list) {
+ if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
+ continue;
+ mutex_lock(&devlink->lock);
+ list_for_each_entry(devlink_port, &devlink->port_list, list) {
+ list_for_each_entry(param_item,
+ &devlink_port->param_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_param_fill(msg,
+ devlink_port->devlink,
+ devlink_port->index, param_item,
+ DEVLINK_CMD_PORT_PARAM_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err == -EOPNOTSUPP) {
+ err = 0;
+ } else if (err) {
+ mutex_unlock(&devlink->lock);
+ goto out;
+ }
+ idx++;
+ }
+ }
+ mutex_unlock(&devlink->lock);
+ }
+out:
+ mutex_unlock(&devlink_mutex);
+
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int devlink_nl_cmd_port_param_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+ struct devlink_param_item *param_item;
+ struct sk_buff *msg;
+ int err;
+
+ param_item = devlink_param_get_from_info(&devlink_port->param_list,
+ info);
+ if (!param_item)
+ return -EINVAL;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_param_fill(msg, devlink_port->devlink,
+ devlink_port->index, param_item,
+ DEVLINK_CMD_PORT_PARAM_GET,
+ info->snd_portid, info->snd_seq, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_port_param_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_port *devlink_port = info->user_ptr[1];
+
+ return __devlink_nl_cmd_param_set_doit(devlink_port->devlink,
+ devlink_port->index,
+ &devlink_port->param_list, info,
+ DEVLINK_CMD_PORT_PARAM_NEW);
}
static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg,
@@ -3177,7 +4185,7 @@
struct nlattr *snap_attr;
int err;
- snap_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
+ snap_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_SNAPSHOT);
if (!snap_attr)
return -EINVAL;
@@ -3201,7 +4209,8 @@
struct nlattr *snapshots_attr;
int err;
- snapshots_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOTS);
+ snapshots_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_REGION_SNAPSHOTS);
if (!snapshots_attr)
return -EINVAL;
@@ -3235,7 +4244,14 @@
if (err)
goto nla_put_failure;
- err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name);
+ if (region->port) {
+ err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->ops->name);
if (err)
goto nla_put_failure;
@@ -3257,31 +4273,40 @@
return err;
}
-static void devlink_nl_region_notify(struct devlink_region *region,
- struct devlink_snapshot *snapshot,
- enum devlink_command cmd)
+static struct sk_buff *
+devlink_nl_region_notify_build(struct devlink_region *region,
+ struct devlink_snapshot *snapshot,
+ enum devlink_command cmd, u32 portid, u32 seq)
{
struct devlink *devlink = region->devlink;
struct sk_buff *msg;
void *hdr;
int err;
- WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
- return;
+ return ERR_PTR(-ENOMEM);
- hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd);
- if (!hdr)
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, 0, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
goto out_free_msg;
+ }
err = devlink_nl_put_handle(msg, devlink);
if (err)
goto out_cancel_msg;
+ if (region->port) {
+ err = nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto out_cancel_msg;
+ }
+
err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME,
- region->name);
+ region->ops->name);
if (err)
goto out_cancel_msg;
@@ -3298,31 +4323,258 @@
}
genlmsg_end(msg, hdr);
- genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
-
- return;
+ return msg;
out_cancel_msg:
genlmsg_cancel(msg, hdr);
out_free_msg:
nlmsg_free(msg);
+ return ERR_PTR(err);
+}
+
+static void devlink_nl_region_notify(struct devlink_region *region,
+ struct devlink_snapshot *snapshot,
+ enum devlink_command cmd)
+{
+ struct devlink *devlink = region->devlink;
+ struct sk_buff *msg;
+
+ WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
+
+ msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
+ if (IS_ERR(msg))
+ return;
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+/**
+ * __devlink_snapshot_id_increment - Increment number of snapshots using an id
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Track when a new snapshot begins using an id. Load the count for the
+ * given id from the snapshot xarray, increment it, and store it back.
+ *
+ * Called when a new snapshot is created with the given id.
+ *
+ * The id *must* have been previously allocated by
+ * devlink_region_snapshot_id_get().
+ *
+ * Returns 0 on success, or an error on failure.
+ */
+static int __devlink_snapshot_id_increment(struct devlink *devlink, u32 id)
+{
+ unsigned long count;
+ void *p;
+
+ lockdep_assert_held(&devlink->lock);
+
+ p = xa_load(&devlink->snapshot_ids, id);
+ if (WARN_ON(!p))
+ return -EINVAL;
+
+ if (WARN_ON(!xa_is_value(p)))
+ return -EINVAL;
+
+ count = xa_to_value(p);
+ count++;
+
+ return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
+ GFP_KERNEL));
+}
+
+/**
+ * __devlink_snapshot_id_decrement - Decrease number of snapshots using an id
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Track when a snapshot is deleted and stops using an id. Load the count
+ * for the given id from the snapshot xarray, decrement it, and store it
+ * back.
+ *
+ * If the count reaches zero, erase this id from the xarray, freeing it
+ * up for future re-use by devlink_region_snapshot_id_get().
+ *
+ * Called when a snapshot using the given id is deleted, and when the
+ * initial allocator of the id is finished using it.
+ */
+static void __devlink_snapshot_id_decrement(struct devlink *devlink, u32 id)
+{
+ unsigned long count;
+ void *p;
+
+ lockdep_assert_held(&devlink->lock);
+
+ p = xa_load(&devlink->snapshot_ids, id);
+ if (WARN_ON(!p))
+ return;
+
+ if (WARN_ON(!xa_is_value(p)))
+ return;
+
+ count = xa_to_value(p);
+
+ if (count > 1) {
+ count--;
+ xa_store(&devlink->snapshot_ids, id, xa_mk_value(count),
+ GFP_KERNEL);
+ } else {
+ /* If this was the last user, we can erase this id */
+ xa_erase(&devlink->snapshot_ids, id);
+ }
+}
+
+/**
+ * __devlink_snapshot_id_insert - Insert a specific snapshot ID
+ * @devlink: devlink instance
+ * @id: the snapshot id
+ *
+ * Mark the given snapshot id as used by inserting a zero value into the
+ * snapshot xarray.
+ *
+ * This must be called while holding the devlink instance lock. Unlike
+ * devlink_snapshot_id_get, the initial reference count is zero, not one.
+ * It is expected that the id will immediately be used before
+ * releasing the devlink instance lock.
+ *
+ * Returns zero on success, or an error code if the snapshot id could not
+ * be inserted.
+ */
+static int __devlink_snapshot_id_insert(struct devlink *devlink, u32 id)
+{
+ lockdep_assert_held(&devlink->lock);
+
+ if (xa_load(&devlink->snapshot_ids, id))
+ return -EEXIST;
+
+ return xa_err(xa_store(&devlink->snapshot_ids, id, xa_mk_value(0),
+ GFP_KERNEL));
+}
+
+/**
+ * __devlink_region_snapshot_id_get - get snapshot ID
+ * @devlink: devlink instance
+ * @id: storage to return snapshot id
+ *
+ * Allocates a new snapshot id. Returns zero on success, or a negative
+ * error on failure. Must be called while holding the devlink instance
+ * lock.
+ *
+ * Snapshot IDs are tracked using an xarray which stores the number of
+ * users of the snapshot id.
+ *
+ * Note that the caller of this function counts as a 'user', in order to
+ * avoid race conditions. The caller must release its hold on the
+ * snapshot by using devlink_region_snapshot_id_put.
+ */
+static int __devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
+{
+ lockdep_assert_held(&devlink->lock);
+
+ return xa_alloc(&devlink->snapshot_ids, id, xa_mk_value(1),
+ xa_limit_32b, GFP_KERNEL);
+}
+
+/**
+ * __devlink_region_snapshot_create - create a new snapshot
+ * This will add a new snapshot of a region. The snapshot
+ * will be stored on the region struct and can be accessed
+ * from devlink. This is useful for future analyses of snapshots.
+ * Multiple snapshots can be created on a region.
+ * The @snapshot_id should be obtained using the getter function.
+ *
+ * Must be called only while holding the devlink instance lock.
+ *
+ * @region: devlink region of the snapshot
+ * @data: snapshot data
+ * @snapshot_id: snapshot id to be created
+ */
+static int
+__devlink_region_snapshot_create(struct devlink_region *region,
+ u8 *data, u32 snapshot_id)
+{
+ struct devlink *devlink = region->devlink;
+ struct devlink_snapshot *snapshot;
+ int err;
+
+ lockdep_assert_held(&devlink->lock);
+
+ /* check if region can hold one more snapshot */
+ if (region->cur_snapshots == region->max_snapshots)
+ return -ENOSPC;
+
+ if (devlink_region_snapshot_get_by_id(region, snapshot_id))
+ return -EEXIST;
+
+ snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
+ if (!snapshot)
+ return -ENOMEM;
+
+ err = __devlink_snapshot_id_increment(devlink, snapshot_id);
+ if (err)
+ goto err_snapshot_id_increment;
+
+ snapshot->id = snapshot_id;
+ snapshot->region = region;
+ snapshot->data = data;
+
+ list_add_tail(&snapshot->list, ®ion->snapshot_list);
+
+ region->cur_snapshots++;
+
+ devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
+ return 0;
+
+err_snapshot_id_increment:
+ kfree(snapshot);
+ return err;
+}
+
+static void devlink_region_snapshot_del(struct devlink_region *region,
+ struct devlink_snapshot *snapshot)
+{
+ struct devlink *devlink = region->devlink;
+
+ lockdep_assert_held(&devlink->lock);
+
+ devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
+ region->cur_snapshots--;
+ list_del(&snapshot->list);
+ region->ops->destructor(snapshot->data);
+ __devlink_snapshot_id_decrement(devlink, snapshot->id);
+ kfree(snapshot);
}
static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
+ struct devlink_port *port = NULL;
struct devlink_region *region;
const char *region_name;
struct sk_buff *msg;
+ unsigned int index;
int err;
if (!info->attrs[DEVLINK_ATTR_REGION_NAME])
return -EINVAL;
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
- region = devlink_region_get_by_name(devlink, region_name);
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
if (!region)
return -EINVAL;
@@ -3341,10 +4593,75 @@
return genlmsg_reply(msg, info);
}
+static int devlink_nl_cmd_region_get_port_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb,
+ struct devlink_port *port,
+ int *idx,
+ int start)
+{
+ struct devlink_region *region;
+ int err = 0;
+
+ list_for_each_entry(region, &port->region_list, list) {
+ if (*idx < start) {
+ (*idx)++;
+ continue;
+ }
+ err = devlink_nl_region_fill(msg, port->devlink,
+ DEVLINK_CMD_REGION_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, region);
+ if (err)
+ goto out;
+ (*idx)++;
+ }
+
+out:
+ return err;
+}
+
+static int devlink_nl_cmd_region_get_devlink_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb,
+ struct devlink *devlink,
+ int *idx,
+ int start)
+{
+ struct devlink_region *region;
+ struct devlink_port *port;
+ int err = 0;
+
+ mutex_lock(&devlink->lock);
+ list_for_each_entry(region, &devlink->region_list, list) {
+ if (*idx < start) {
+ (*idx)++;
+ continue;
+ }
+ err = devlink_nl_region_fill(msg, devlink,
+ DEVLINK_CMD_REGION_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI, region);
+ if (err)
+ goto out;
+ (*idx)++;
+ }
+
+ list_for_each_entry(port, &devlink->port_list, list) {
+ err = devlink_nl_cmd_region_get_port_dumpit(msg, cb, port, idx,
+ start);
+ if (err)
+ goto out;
+ }
+
+out:
+ mutex_unlock(&devlink->lock);
+ return err;
+}
+
static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
- struct devlink_region *region;
struct devlink *devlink;
int start = cb->args[0];
int idx = 0;
@@ -3354,25 +4671,10 @@
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
continue;
-
- mutex_lock(&devlink->lock);
- list_for_each_entry(region, &devlink->region_list, list) {
- if (idx < start) {
- idx++;
- continue;
- }
- err = devlink_nl_region_fill(msg, devlink,
- DEVLINK_CMD_REGION_GET,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI, region);
- if (err) {
- mutex_unlock(&devlink->lock);
- goto out;
- }
- idx++;
- }
- mutex_unlock(&devlink->lock);
+ err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
+ &idx, start);
+ if (err)
+ goto out;
}
out:
mutex_unlock(&devlink_mutex);
@@ -3385,8 +4687,10 @@
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_snapshot *snapshot;
+ struct devlink_port *port = NULL;
struct devlink_region *region;
const char *region_name;
+ unsigned int index;
u32 snapshot_id;
if (!info->attrs[DEVLINK_ATTR_REGION_NAME] ||
@@ -3396,7 +4700,19 @@
region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]);
- region = devlink_region_get_by_name(devlink, region_name);
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
if (!region)
return -EINVAL;
@@ -3404,9 +4720,124 @@
if (!snapshot)
return -EINVAL;
- devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL);
- devlink_region_snapshot_del(snapshot);
+ devlink_region_snapshot_del(region, snapshot);
return 0;
+}
+
+static int
+devlink_nl_cmd_region_new(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_snapshot *snapshot;
+ struct devlink_port *port = NULL;
+ struct nlattr *snapshot_id_attr;
+ struct devlink_region *region;
+ const char *region_name;
+ unsigned int index;
+ u32 snapshot_id;
+ u8 *data;
+ int err;
+
+ if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) {
+ NL_SET_ERR_MSG_MOD(info->extack, "No region name provided");
+ return -EINVAL;
+ }
+
+ region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]);
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port)
+ return -ENODEV;
+ }
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not exist");
+ return -EINVAL;
+ }
+
+ if (!region->ops->snapshot) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested region does not support taking an immediate snapshot");
+ return -EOPNOTSUPP;
+ }
+
+ if (region->cur_snapshots == region->max_snapshots) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The region has reached the maximum number of stored snapshots");
+ return -ENOSPC;
+ }
+
+ snapshot_id_attr = info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID];
+ if (snapshot_id_attr) {
+ snapshot_id = nla_get_u32(snapshot_id_attr);
+
+ if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
+ NL_SET_ERR_MSG_MOD(info->extack, "The requested snapshot id is already in use");
+ return -EEXIST;
+ }
+
+ err = __devlink_snapshot_id_insert(devlink, snapshot_id);
+ if (err)
+ return err;
+ } else {
+ err = __devlink_region_snapshot_id_get(devlink, &snapshot_id);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Failed to allocate a new snapshot id");
+ return err;
+ }
+ }
+
+ if (port)
+ err = region->port_ops->snapshot(port, region->port_ops,
+ info->extack, &data);
+ else
+ err = region->ops->snapshot(devlink, region->ops,
+ info->extack, &data);
+ if (err)
+ goto err_snapshot_capture;
+
+ err = __devlink_region_snapshot_create(region, data, snapshot_id);
+ if (err)
+ goto err_snapshot_create;
+
+ if (!snapshot_id_attr) {
+ struct sk_buff *msg;
+
+ snapshot = devlink_region_snapshot_get_by_id(region,
+ snapshot_id);
+ if (WARN_ON(!snapshot))
+ return -EINVAL;
+
+ msg = devlink_nl_region_notify_build(region, snapshot,
+ DEVLINK_CMD_REGION_NEW,
+ info->snd_portid,
+ info->snd_seq);
+ err = PTR_ERR_OR_ZERO(msg);
+ if (err)
+ goto err_notify;
+
+ err = genlmsg_reply(msg, info);
+ if (err)
+ goto err_notify;
+ }
+
+ return 0;
+
+err_snapshot_create:
+ region->ops->destructor(data);
+err_snapshot_capture:
+ __devlink_snapshot_id_decrement(devlink, snapshot_id);
+ return err;
+
+err_notify:
+ devlink_region_snapshot_del(region, snapshot);
+ return err;
}
static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg,
@@ -3417,7 +4848,7 @@
struct nlattr *chunk_attr;
int err;
- chunk_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_CHUNK);
+ chunk_attr = nla_nest_start_noflag(msg, DEVLINK_ATTR_REGION_CHUNK);
if (!chunk_attr)
return -EINVAL;
@@ -3446,7 +4877,6 @@
struct nlattr **attrs,
u64 start_offset,
u64 end_offset,
- bool dump,
u64 *new_offset)
{
struct devlink_snapshot *snapshot;
@@ -3460,9 +4890,6 @@
snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id);
if (!snapshot)
return -EINVAL;
-
- if (end_offset > snapshot->data_len || dump)
- end_offset = snapshot->data_len;
while (curr_offset < end_offset) {
u32 data_size;
@@ -3490,57 +4917,56 @@
static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb,
struct netlink_callback *cb)
{
- u64 ret_offset, start_offset, end_offset = 0;
- struct nlattr *attrs[DEVLINK_ATTR_MAX + 1];
- const struct genl_ops *ops = cb->data;
+ const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+ u64 ret_offset, start_offset, end_offset = U64_MAX;
+ struct nlattr **attrs = info->attrs;
+ struct devlink_port *port = NULL;
struct devlink_region *region;
struct nlattr *chunks_attr;
const char *region_name;
struct devlink *devlink;
- bool dump = true;
+ unsigned int index;
void *hdr;
int err;
start_offset = *((u64 *)&cb->args[0]);
- err = nlmsg_parse(cb->nlh, GENL_HDRLEN + devlink_nl_family.hdrsize,
- attrs, DEVLINK_ATTR_MAX, ops->policy, NULL);
- if (err)
- goto out;
-
- devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
- if (IS_ERR(devlink))
- goto out;
-
mutex_lock(&devlink_mutex);
+ devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
+ if (IS_ERR(devlink)) {
+ err = PTR_ERR(devlink);
+ goto out_dev;
+ }
+
mutex_lock(&devlink->lock);
if (!attrs[DEVLINK_ATTR_REGION_NAME] ||
- !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID])
+ !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) {
+ err = -EINVAL;
goto out_unlock;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_PORT_INDEX]) {
+ index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
+
+ port = devlink_port_get_by_index(devlink, index);
+ if (!port) {
+ err = -ENODEV;
+ goto out_unlock;
+ }
+ }
region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]);
- region = devlink_region_get_by_name(devlink, region_name);
- if (!region)
+
+ if (port)
+ region = devlink_port_region_get_by_name(port, region_name);
+ else
+ region = devlink_region_get_by_name(devlink, region_name);
+
+ if (!region) {
+ err = -EINVAL;
goto out_unlock;
-
- hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
- &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
- DEVLINK_CMD_REGION_READ);
- if (!hdr)
- goto out_unlock;
-
- err = devlink_nl_put_handle(skb, devlink);
- if (err)
- goto nla_put_failure;
-
- err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
- if (err)
- goto nla_put_failure;
-
- chunks_attr = nla_nest_start(skb, DEVLINK_ATTR_REGION_CHUNKS);
- if (!chunks_attr)
- goto nla_put_failure;
+ }
if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] &&
attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) {
@@ -3550,21 +4976,59 @@
end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]);
end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]);
- dump = false;
+ }
+
+ if (end_offset > region->size)
+ end_offset = region->size;
+
+ /* return 0 if there is no further data to read */
+ if (start_offset == end_offset) {
+ err = 0;
+ goto out_unlock;
+ }
+
+ hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI,
+ DEVLINK_CMD_REGION_READ);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto out_unlock;
+ }
+
+ err = devlink_nl_put_handle(skb, devlink);
+ if (err)
+ goto nla_put_failure;
+
+ if (region->port) {
+ err = nla_put_u32(skb, DEVLINK_ATTR_PORT_INDEX,
+ region->port->index);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name);
+ if (err)
+ goto nla_put_failure;
+
+ chunks_attr = nla_nest_start_noflag(skb, DEVLINK_ATTR_REGION_CHUNKS);
+ if (!chunks_attr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
}
err = devlink_nl_region_read_snapshot_fill(skb, devlink,
region, attrs,
start_offset,
- end_offset, dump,
- &ret_offset);
+ end_offset, &ret_offset);
if (err && err != -EMSGSIZE)
goto nla_put_failure;
/* Check if there was any progress done to prevent infinite loop */
- if (ret_offset == start_offset)
+ if (ret_offset == start_offset) {
+ err = -EINVAL;
goto nla_put_failure;
+ }
*((u64 *)&cb->args[0]) = ret_offset;
@@ -3579,16 +5043,2513 @@
genlmsg_cancel(skb, hdr);
out_unlock:
mutex_unlock(&devlink->lock);
+out_dev:
mutex_unlock(&devlink_mutex);
-out:
+ return err;
+}
+
+struct devlink_info_req {
+ struct sk_buff *msg;
+};
+
+int devlink_info_driver_name_put(struct devlink_info_req *req, const char *name)
+{
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_DRIVER_NAME, name);
+}
+EXPORT_SYMBOL_GPL(devlink_info_driver_name_put);
+
+int devlink_info_serial_number_put(struct devlink_info_req *req, const char *sn)
+{
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_SERIAL_NUMBER, sn);
+}
+EXPORT_SYMBOL_GPL(devlink_info_serial_number_put);
+
+int devlink_info_board_serial_number_put(struct devlink_info_req *req,
+ const char *bsn)
+{
+ return nla_put_string(req->msg, DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER,
+ bsn);
+}
+EXPORT_SYMBOL_GPL(devlink_info_board_serial_number_put);
+
+static int devlink_info_version_put(struct devlink_info_req *req, int attr,
+ const char *version_name,
+ const char *version_value)
+{
+ struct nlattr *nest;
+ int err;
+
+ nest = nla_nest_start_noflag(req->msg, attr);
+ if (!nest)
+ return -EMSGSIZE;
+
+ err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
+ version_name);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
+ version_value);
+ if (err)
+ goto nla_put_failure;
+
+ nla_nest_end(req->msg, nest);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(req->msg, nest);
+ return err;
+}
+
+int devlink_info_version_fixed_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_FIXED,
+ version_name, version_value);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_fixed_put);
+
+int devlink_info_version_stored_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_STORED,
+ version_name, version_value);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_stored_put);
+
+int devlink_info_version_running_put(struct devlink_info_req *req,
+ const char *version_name,
+ const char *version_value)
+{
+ return devlink_info_version_put(req, DEVLINK_ATTR_INFO_VERSION_RUNNING,
+ version_name, version_value);
+}
+EXPORT_SYMBOL_GPL(devlink_info_version_running_put);
+
+static int
+devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags, struct netlink_ext_ack *extack)
+{
+ struct devlink_info_req req;
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ err = -EMSGSIZE;
+ if (devlink_nl_put_handle(msg, devlink))
+ goto err_cancel_msg;
+
+ req.msg = msg;
+ err = devlink->ops->info_get(devlink, &req, extack);
+ if (err)
+ goto err_cancel_msg;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+err_cancel_msg:
+ genlmsg_cancel(msg, hdr);
+ return err;
+}
+
+static int devlink_nl_cmd_info_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ if (!devlink->ops->info_get)
+ return -EOPNOTSUPP;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
+ info->snd_portid, info->snd_seq, 0,
+ info->extack);
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink *devlink;
+ int start = cb->args[0];
+ int idx = 0;
+ int err = 0;
+
+ mutex_lock(&devlink_mutex);
+ list_for_each_entry(devlink, &devlink_list, list) {
+ if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
+ continue;
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+
+ if (!devlink->ops->info_get) {
+ idx++;
+ continue;
+ }
+
+ mutex_lock(&devlink->lock);
+ err = devlink_nl_info_fill(msg, devlink, DEVLINK_CMD_INFO_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, NLM_F_MULTI,
+ cb->extack);
+ mutex_unlock(&devlink->lock);
+ if (err == -EOPNOTSUPP)
+ err = 0;
+ else if (err)
+ break;
+ idx++;
+ }
+ mutex_unlock(&devlink_mutex);
+
+ if (err != -EMSGSIZE)
+ return err;
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+struct devlink_fmsg_item {
+ struct list_head list;
+ int attrtype;
+ u8 nla_type;
+ u16 len;
+ int value[];
+};
+
+struct devlink_fmsg {
+ struct list_head item_list;
+ bool putting_binary; /* This flag forces enclosing of binary data
+ * in an array brackets. It forces using
+ * of designated API:
+ * devlink_fmsg_binary_pair_nest_start()
+ * devlink_fmsg_binary_pair_nest_end()
+ */
+};
+
+static struct devlink_fmsg *devlink_fmsg_alloc(void)
+{
+ struct devlink_fmsg *fmsg;
+
+ fmsg = kzalloc(sizeof(*fmsg), GFP_KERNEL);
+ if (!fmsg)
+ return NULL;
+
+ INIT_LIST_HEAD(&fmsg->item_list);
+
+ return fmsg;
+}
+
+static void devlink_fmsg_free(struct devlink_fmsg *fmsg)
+{
+ struct devlink_fmsg_item *item, *tmp;
+
+ list_for_each_entry_safe(item, tmp, &fmsg->item_list, list) {
+ list_del(&item->list);
+ kfree(item);
+ }
+ kfree(fmsg);
+}
+
+static int devlink_fmsg_nest_common(struct devlink_fmsg *fmsg,
+ int attrtype)
+{
+ struct devlink_fmsg_item *item;
+
+ item = kzalloc(sizeof(*item), GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->attrtype = attrtype;
+ list_add_tail(&item->list, &fmsg->item_list);
+
return 0;
}
+int devlink_fmsg_obj_nest_start(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_OBJ_NEST_START);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_start);
+
+static int devlink_fmsg_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_NEST_END);
+}
+
+int devlink_fmsg_obj_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_obj_nest_end);
+
+#define DEVLINK_FMSG_MAX_SIZE (GENLMSG_DEFAULT_SIZE - GENL_HDRLEN - NLA_HDRLEN)
+
+static int devlink_fmsg_put_name(struct devlink_fmsg *fmsg, const char *name)
+{
+ struct devlink_fmsg_item *item;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ if (strlen(name) + 1 > DEVLINK_FMSG_MAX_SIZE)
+ return -EMSGSIZE;
+
+ item = kzalloc(sizeof(*item) + strlen(name) + 1, GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->nla_type = NLA_NUL_STRING;
+ item->len = strlen(name) + 1;
+ item->attrtype = DEVLINK_ATTR_FMSG_OBJ_NAME;
+ memcpy(&item->value, name, item->len);
+ list_add_tail(&item->list, &fmsg->item_list);
+
+ return 0;
+}
+
+int devlink_fmsg_pair_nest_start(struct devlink_fmsg *fmsg, const char *name)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_PAIR_NEST_START);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_put_name(fmsg, name);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_start);
+
+int devlink_fmsg_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_pair_nest_end);
+
+int devlink_fmsg_arr_pair_nest_start(struct devlink_fmsg *fmsg,
+ const char *name)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_nest_common(fmsg, DEVLINK_ATTR_FMSG_ARR_NEST_START);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_start);
+
+int devlink_fmsg_arr_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ int err;
+
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ err = devlink_fmsg_nest_end(fmsg);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_arr_pair_nest_end);
+
+int devlink_fmsg_binary_pair_nest_start(struct devlink_fmsg *fmsg,
+ const char *name)
+{
+ int err;
+
+ err = devlink_fmsg_arr_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ fmsg->putting_binary = true;
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_start);
+
+int devlink_fmsg_binary_pair_nest_end(struct devlink_fmsg *fmsg)
+{
+ if (!fmsg->putting_binary)
+ return -EINVAL;
+
+ fmsg->putting_binary = false;
+ return devlink_fmsg_arr_pair_nest_end(fmsg);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_nest_end);
+
+static int devlink_fmsg_put_value(struct devlink_fmsg *fmsg,
+ const void *value, u16 value_len,
+ u8 value_nla_type)
+{
+ struct devlink_fmsg_item *item;
+
+ if (value_len > DEVLINK_FMSG_MAX_SIZE)
+ return -EMSGSIZE;
+
+ item = kzalloc(sizeof(*item) + value_len, GFP_KERNEL);
+ if (!item)
+ return -ENOMEM;
+
+ item->nla_type = value_nla_type;
+ item->len = value_len;
+ item->attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
+ memcpy(&item->value, value, item->len);
+ list_add_tail(&item->list, &fmsg->item_list);
+
+ return 0;
+}
+
+int devlink_fmsg_bool_put(struct devlink_fmsg *fmsg, bool value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_FLAG);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_bool_put);
+
+int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U8);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u8_put);
+
+int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U32);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u32_put);
+
+int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, &value, sizeof(value), NLA_U64);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u64_put);
+
+int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value)
+{
+ if (fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, value, strlen(value) + 1,
+ NLA_NUL_STRING);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);
+
+int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,
+ u16 value_len)
+{
+ if (!fmsg->putting_binary)
+ return -EINVAL;
+
+ return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);
+
+int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ bool value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_bool_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_bool_pair_put);
+
+int devlink_fmsg_u8_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u8 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u8_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u8_pair_put);
+
+int devlink_fmsg_u32_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u32 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u32_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u32_pair_put);
+
+int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ u64 value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_u64_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_u64_pair_put);
+
+int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ const char *value)
+{
+ int err;
+
+ err = devlink_fmsg_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_string_put(fmsg, value);
+ if (err)
+ return err;
+
+ err = devlink_fmsg_pair_nest_end(fmsg);
+ if (err)
+ return err;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);
+
+int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,
+ const void *value, u32 value_len)
+{
+ u32 data_size;
+ int end_err;
+ u32 offset;
+ int err;
+
+ err = devlink_fmsg_binary_pair_nest_start(fmsg, name);
+ if (err)
+ return err;
+
+ for (offset = 0; offset < value_len; offset += data_size) {
+ data_size = value_len - offset;
+ if (data_size > DEVLINK_FMSG_MAX_SIZE)
+ data_size = DEVLINK_FMSG_MAX_SIZE;
+ err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);
+ if (err)
+ break;
+ /* Exit from loop with a break (instead of
+ * return) to make sure putting_binary is turned off in
+ * devlink_fmsg_binary_pair_nest_end
+ */
+ }
+
+ end_err = devlink_fmsg_binary_pair_nest_end(fmsg);
+ if (end_err)
+ err = end_err;
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_fmsg_binary_pair_put);
+
+static int
+devlink_fmsg_item_fill_type(struct devlink_fmsg_item *msg, struct sk_buff *skb)
+{
+ switch (msg->nla_type) {
+ case NLA_FLAG:
+ case NLA_U8:
+ case NLA_U32:
+ case NLA_U64:
+ case NLA_NUL_STRING:
+ case NLA_BINARY:
+ return nla_put_u8(skb, DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE,
+ msg->nla_type);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+devlink_fmsg_item_fill_data(struct devlink_fmsg_item *msg, struct sk_buff *skb)
+{
+ int attrtype = DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA;
+ u8 tmp;
+
+ switch (msg->nla_type) {
+ case NLA_FLAG:
+ /* Always provide flag data, regardless of its value */
+ tmp = *(bool *) msg->value;
+
+ return nla_put_u8(skb, attrtype, tmp);
+ case NLA_U8:
+ return nla_put_u8(skb, attrtype, *(u8 *) msg->value);
+ case NLA_U32:
+ return nla_put_u32(skb, attrtype, *(u32 *) msg->value);
+ case NLA_U64:
+ return nla_put_u64_64bit(skb, attrtype, *(u64 *) msg->value,
+ DEVLINK_ATTR_PAD);
+ case NLA_NUL_STRING:
+ return nla_put_string(skb, attrtype, (char *) &msg->value);
+ case NLA_BINARY:
+ return nla_put(skb, attrtype, msg->len, (void *) &msg->value);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+devlink_fmsg_prepare_skb(struct devlink_fmsg *fmsg, struct sk_buff *skb,
+ int *start)
+{
+ struct devlink_fmsg_item *item;
+ struct nlattr *fmsg_nlattr;
+ int i = 0;
+ int err;
+
+ fmsg_nlattr = nla_nest_start_noflag(skb, DEVLINK_ATTR_FMSG);
+ if (!fmsg_nlattr)
+ return -EMSGSIZE;
+
+ list_for_each_entry(item, &fmsg->item_list, list) {
+ if (i < *start) {
+ i++;
+ continue;
+ }
+
+ switch (item->attrtype) {
+ case DEVLINK_ATTR_FMSG_OBJ_NEST_START:
+ case DEVLINK_ATTR_FMSG_PAIR_NEST_START:
+ case DEVLINK_ATTR_FMSG_ARR_NEST_START:
+ case DEVLINK_ATTR_FMSG_NEST_END:
+ err = nla_put_flag(skb, item->attrtype);
+ break;
+ case DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA:
+ err = devlink_fmsg_item_fill_type(item, skb);
+ if (err)
+ break;
+ err = devlink_fmsg_item_fill_data(item, skb);
+ break;
+ case DEVLINK_ATTR_FMSG_OBJ_NAME:
+ err = nla_put_string(skb, item->attrtype,
+ (char *) &item->value);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ if (!err)
+ *start = ++i;
+ else
+ break;
+ }
+
+ nla_nest_end(skb, fmsg_nlattr);
+ return err;
+}
+
+static int devlink_fmsg_snd(struct devlink_fmsg *fmsg,
+ struct genl_info *info,
+ enum devlink_command cmd, int flags)
+{
+ struct nlmsghdr *nlh;
+ struct sk_buff *skb;
+ bool last = false;
+ int index = 0;
+ void *hdr;
+ int err;
+
+ while (!last) {
+ int tmp_index = index;
+
+ skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
+ &devlink_nl_family, flags | NLM_F_MULTI, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
+ if (!err)
+ last = true;
+ else if (err != -EMSGSIZE || tmp_index == index)
+ goto nla_put_failure;
+
+ genlmsg_end(skb, hdr);
+ err = genlmsg_reply(skb, info);
+ if (err)
+ return err;
+ }
+
+ skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+ nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
+ NLMSG_DONE, 0, flags | NLM_F_MULTI);
+ if (!nlh) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ return genlmsg_reply(skb, info);
+
+nla_put_failure:
+ nlmsg_free(skb);
+ return err;
+}
+
+static int devlink_fmsg_dumpit(struct devlink_fmsg *fmsg, struct sk_buff *skb,
+ struct netlink_callback *cb,
+ enum devlink_command cmd)
+{
+ int index = cb->args[0];
+ int tmp_index = index;
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, cmd);
+ if (!hdr) {
+ err = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ err = devlink_fmsg_prepare_skb(fmsg, skb, &index);
+ if ((err && err != -EMSGSIZE) || tmp_index == index)
+ goto nla_put_failure;
+
+ cb->args[0] = index;
+ genlmsg_end(skb, hdr);
+ return skb->len;
+
+nla_put_failure:
+ genlmsg_cancel(skb, hdr);
+ return err;
+}
+
+struct devlink_health_reporter {
+ struct list_head list;
+ void *priv;
+ const struct devlink_health_reporter_ops *ops;
+ struct devlink *devlink;
+ struct devlink_port *devlink_port;
+ struct devlink_fmsg *dump_fmsg;
+ struct mutex dump_lock; /* lock parallel read/write from dump buffers */
+ u64 graceful_period;
+ bool auto_recover;
+ bool auto_dump;
+ u8 health_state;
+ u64 dump_ts;
+ u64 dump_real_ts;
+ u64 error_count;
+ u64 recovery_count;
+ u64 last_recovery_ts;
+ refcount_t refcount;
+};
+
+void *
+devlink_health_reporter_priv(struct devlink_health_reporter *reporter)
+{
+ return reporter->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_priv);
+
+static struct devlink_health_reporter *
+__devlink_health_reporter_find_by_name(struct list_head *reporter_list,
+ struct mutex *list_lock,
+ const char *reporter_name)
+{
+ struct devlink_health_reporter *reporter;
+
+ lockdep_assert_held(list_lock);
+ list_for_each_entry(reporter, reporter_list, list)
+ if (!strcmp(reporter->ops->name, reporter_name))
+ return reporter;
+ return NULL;
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_find_by_name(struct devlink *devlink,
+ const char *reporter_name)
+{
+ return __devlink_health_reporter_find_by_name(&devlink->reporter_list,
+ &devlink->reporters_lock,
+ reporter_name);
+}
+
+static struct devlink_health_reporter *
+devlink_port_health_reporter_find_by_name(struct devlink_port *devlink_port,
+ const char *reporter_name)
+{
+ return __devlink_health_reporter_find_by_name(&devlink_port->reporter_list,
+ &devlink_port->reporters_lock,
+ reporter_name);
+}
+
+static struct devlink_health_reporter *
+__devlink_health_reporter_create(struct devlink *devlink,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ if (WARN_ON(graceful_period && !ops->recover))
+ return ERR_PTR(-EINVAL);
+
+ reporter = kzalloc(sizeof(*reporter), GFP_KERNEL);
+ if (!reporter)
+ return ERR_PTR(-ENOMEM);
+
+ reporter->priv = priv;
+ reporter->ops = ops;
+ reporter->devlink = devlink;
+ reporter->graceful_period = graceful_period;
+ reporter->auto_recover = !!ops->recover;
+ reporter->auto_dump = !!ops->dump;
+ mutex_init(&reporter->dump_lock);
+ refcount_set(&reporter->refcount, 1);
+ return reporter;
+}
+
+/**
+ * devlink_port_health_reporter_create - create devlink health reporter for
+ * specified port instance
+ *
+ * @port: devlink_port which should contain the new reporter
+ * @ops: ops
+ * @graceful_period: to avoid recovery loops, in msecs
+ * @priv: priv
+ */
+struct devlink_health_reporter *
+devlink_port_health_reporter_create(struct devlink_port *port,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ mutex_lock(&port->reporters_lock);
+ if (__devlink_health_reporter_find_by_name(&port->reporter_list,
+ &port->reporters_lock, ops->name)) {
+ reporter = ERR_PTR(-EEXIST);
+ goto unlock;
+ }
+
+ reporter = __devlink_health_reporter_create(port->devlink, ops,
+ graceful_period, priv);
+ if (IS_ERR(reporter))
+ goto unlock;
+
+ reporter->devlink_port = port;
+ list_add_tail(&reporter->list, &port->reporter_list);
+unlock:
+ mutex_unlock(&port->reporters_lock);
+ return reporter;
+}
+EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create);
+
+/**
+ * devlink_health_reporter_create - create devlink health reporter
+ *
+ * @devlink: devlink
+ * @ops: ops
+ * @graceful_period: to avoid recovery loops, in msecs
+ * @priv: priv
+ */
+struct devlink_health_reporter *
+devlink_health_reporter_create(struct devlink *devlink,
+ const struct devlink_health_reporter_ops *ops,
+ u64 graceful_period, void *priv)
+{
+ struct devlink_health_reporter *reporter;
+
+ mutex_lock(&devlink->reporters_lock);
+ if (devlink_health_reporter_find_by_name(devlink, ops->name)) {
+ reporter = ERR_PTR(-EEXIST);
+ goto unlock;
+ }
+
+ reporter = __devlink_health_reporter_create(devlink, ops,
+ graceful_period, priv);
+ if (IS_ERR(reporter))
+ goto unlock;
+
+ list_add_tail(&reporter->list, &devlink->reporter_list);
+unlock:
+ mutex_unlock(&devlink->reporters_lock);
+ return reporter;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_create);
+
+static void
+devlink_health_reporter_free(struct devlink_health_reporter *reporter)
+{
+ mutex_destroy(&reporter->dump_lock);
+ if (reporter->dump_fmsg)
+ devlink_fmsg_free(reporter->dump_fmsg);
+ kfree(reporter);
+}
+
+static void
+devlink_health_reporter_put(struct devlink_health_reporter *reporter)
+{
+ if (refcount_dec_and_test(&reporter->refcount))
+ devlink_health_reporter_free(reporter);
+}
+
+static void
+__devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ list_del(&reporter->list);
+ devlink_health_reporter_put(reporter);
+}
+
+/**
+ * devlink_health_reporter_destroy - destroy devlink health reporter
+ *
+ * @reporter: devlink health reporter to destroy
+ */
+void
+devlink_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ struct mutex *lock = &reporter->devlink->reporters_lock;
+
+ mutex_lock(lock);
+ __devlink_health_reporter_destroy(reporter);
+ mutex_unlock(lock);
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy);
+
+/**
+ * devlink_port_health_reporter_destroy - destroy devlink port health reporter
+ *
+ * @reporter: devlink health reporter to destroy
+ */
+void
+devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter)
+{
+ struct mutex *lock = &reporter->devlink_port->reporters_lock;
+
+ mutex_lock(lock);
+ __devlink_health_reporter_destroy(reporter);
+ mutex_unlock(lock);
+}
+EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy);
+
+static int
+devlink_nl_health_reporter_fill(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct devlink_health_reporter *reporter,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags)
+{
+ struct nlattr *reporter_attr;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto genlmsg_cancel;
+
+ if (reporter->devlink_port) {
+ if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, reporter->devlink_port->index))
+ goto genlmsg_cancel;
+ }
+ reporter_attr = nla_nest_start_noflag(msg,
+ DEVLINK_ATTR_HEALTH_REPORTER);
+ if (!reporter_attr)
+ goto genlmsg_cancel;
+ if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME,
+ reporter->ops->name))
+ goto reporter_nest_cancel;
+ if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE,
+ reporter->health_state))
+ goto reporter_nest_cancel;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR_COUNT,
+ reporter->error_count, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER_COUNT,
+ reporter->recovery_count, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->recover &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD,
+ reporter->graceful_period,
+ DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->recover &&
+ nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER,
+ reporter->auto_recover))
+ goto reporter_nest_cancel;
+ if (reporter->dump_fmsg &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS,
+ jiffies_to_msecs(reporter->dump_ts),
+ DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->dump_fmsg &&
+ nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS_NS,
+ reporter->dump_real_ts, DEVLINK_ATTR_PAD))
+ goto reporter_nest_cancel;
+ if (reporter->ops->dump &&
+ nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP,
+ reporter->auto_dump))
+ goto reporter_nest_cancel;
+
+ nla_nest_end(msg, reporter_attr);
+ genlmsg_end(msg, hdr);
+ return 0;
+
+reporter_nest_cancel:
+ nla_nest_end(msg, reporter_attr);
+genlmsg_cancel:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static void devlink_recover_notify(struct devlink_health_reporter *reporter,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_health_reporter_fill(msg, reporter->devlink,
+ reporter, cmd, 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family,
+ devlink_net(reporter->devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+void
+devlink_health_reporter_recovery_done(struct devlink_health_reporter *reporter)
+{
+ reporter->recovery_count++;
+ reporter->last_recovery_ts = jiffies;
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_recovery_done);
+
+static int
+devlink_health_reporter_recover(struct devlink_health_reporter *reporter,
+ void *priv_ctx, struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (reporter->health_state == DEVLINK_HEALTH_REPORTER_STATE_HEALTHY)
+ return 0;
+
+ if (!reporter->ops->recover)
+ return -EOPNOTSUPP;
+
+ err = reporter->ops->recover(reporter, priv_ctx, extack);
+ if (err)
+ return err;
+
+ devlink_health_reporter_recovery_done(reporter);
+ reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_HEALTHY;
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+
+ return 0;
+}
+
+static void
+devlink_health_dump_clear(struct devlink_health_reporter *reporter)
+{
+ if (!reporter->dump_fmsg)
+ return;
+ devlink_fmsg_free(reporter->dump_fmsg);
+ reporter->dump_fmsg = NULL;
+}
+
+static int devlink_health_do_dump(struct devlink_health_reporter *reporter,
+ void *priv_ctx,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (!reporter->ops->dump)
+ return 0;
+
+ if (reporter->dump_fmsg)
+ return 0;
+
+ reporter->dump_fmsg = devlink_fmsg_alloc();
+ if (!reporter->dump_fmsg) {
+ err = -ENOMEM;
+ return err;
+ }
+
+ err = devlink_fmsg_obj_nest_start(reporter->dump_fmsg);
+ if (err)
+ goto dump_err;
+
+ err = reporter->ops->dump(reporter, reporter->dump_fmsg,
+ priv_ctx, extack);
+ if (err)
+ goto dump_err;
+
+ err = devlink_fmsg_obj_nest_end(reporter->dump_fmsg);
+ if (err)
+ goto dump_err;
+
+ reporter->dump_ts = jiffies;
+ reporter->dump_real_ts = ktime_get_real_ns();
+
+ return 0;
+
+dump_err:
+ devlink_health_dump_clear(reporter);
+ return err;
+}
+
+int devlink_health_report(struct devlink_health_reporter *reporter,
+ const char *msg, void *priv_ctx)
+{
+ enum devlink_health_reporter_state prev_health_state;
+ struct devlink *devlink = reporter->devlink;
+ unsigned long recover_ts_threshold;
+
+ /* write a log message of the current error */
+ WARN_ON(!msg);
+ trace_devlink_health_report(devlink, reporter->ops->name, msg);
+ reporter->error_count++;
+ prev_health_state = reporter->health_state;
+ reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+
+ /* abort if the previous error wasn't recovered */
+ recover_ts_threshold = reporter->last_recovery_ts +
+ msecs_to_jiffies(reporter->graceful_period);
+ if (reporter->auto_recover &&
+ (prev_health_state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY ||
+ (reporter->last_recovery_ts && reporter->recovery_count &&
+ time_is_after_jiffies(recover_ts_threshold)))) {
+ trace_devlink_health_recover_aborted(devlink,
+ reporter->ops->name,
+ reporter->health_state,
+ jiffies -
+ reporter->last_recovery_ts);
+ return -ECANCELED;
+ }
+
+ reporter->health_state = DEVLINK_HEALTH_REPORTER_STATE_ERROR;
+
+ if (reporter->auto_dump) {
+ mutex_lock(&reporter->dump_lock);
+ /* store current dump of current error, for later analysis */
+ devlink_health_do_dump(reporter, priv_ctx, NULL);
+ mutex_unlock(&reporter->dump_lock);
+ }
+
+ if (reporter->auto_recover)
+ return devlink_health_reporter_recover(reporter,
+ priv_ctx, NULL);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(devlink_health_report);
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_attrs(struct devlink *devlink,
+ struct nlattr **attrs)
+{
+ struct devlink_health_reporter *reporter;
+ struct devlink_port *devlink_port;
+ char *reporter_name;
+
+ if (!attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME])
+ return NULL;
+
+ reporter_name = nla_data(attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]);
+ devlink_port = devlink_port_get_from_attrs(devlink, attrs);
+ if (IS_ERR(devlink_port)) {
+ mutex_lock(&devlink->reporters_lock);
+ reporter = devlink_health_reporter_find_by_name(devlink, reporter_name);
+ if (reporter)
+ refcount_inc(&reporter->refcount);
+ mutex_unlock(&devlink->reporters_lock);
+ } else {
+ mutex_lock(&devlink_port->reporters_lock);
+ reporter = devlink_port_health_reporter_find_by_name(devlink_port, reporter_name);
+ if (reporter)
+ refcount_inc(&reporter->refcount);
+ mutex_unlock(&devlink_port->reporters_lock);
+ }
+
+ return reporter;
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ return devlink_health_reporter_get_from_attrs(devlink, info->attrs);
+}
+
+static struct devlink_health_reporter *
+devlink_health_reporter_get_from_cb(struct netlink_callback *cb)
+{
+ const struct genl_dumpit_info *info = genl_dumpit_info(cb);
+ struct devlink_health_reporter *reporter;
+ struct nlattr **attrs = info->attrs;
+ struct devlink *devlink;
+
+ mutex_lock(&devlink_mutex);
+ devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs);
+ if (IS_ERR(devlink))
+ goto unlock;
+
+ reporter = devlink_health_reporter_get_from_attrs(devlink, attrs);
+ mutex_unlock(&devlink_mutex);
+ return reporter;
+unlock:
+ mutex_unlock(&devlink_mutex);
+ return NULL;
+}
+
+void
+devlink_health_reporter_state_update(struct devlink_health_reporter *reporter,
+ enum devlink_health_reporter_state state)
+{
+ if (WARN_ON(state != DEVLINK_HEALTH_REPORTER_STATE_HEALTHY &&
+ state != DEVLINK_HEALTH_REPORTER_STATE_ERROR))
+ return;
+
+ if (reporter->health_state == state)
+ return;
+
+ reporter->health_state = state;
+ trace_devlink_health_reporter_state_update(reporter->devlink,
+ reporter->ops->name, state);
+ devlink_recover_notify(reporter, DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+}
+EXPORT_SYMBOL_GPL(devlink_health_reporter_state_update);
+
+static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ struct sk_buff *msg;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
+ DEVLINK_CMD_HEALTH_REPORTER_GET,
+ info->snd_portid, info->snd_seq,
+ 0);
+ if (err) {
+ nlmsg_free(msg);
+ goto out;
+ }
+
+ err = genlmsg_reply(msg, info);
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_health_reporter *reporter;
+ struct devlink_port *port;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ int idx = 0;
+ int err;
+
+ mutex_lock(&devlink_mutex);
+ list_for_each_entry(devlink, &devlink_list, list) {
+ if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
+ continue;
+ mutex_lock(&devlink->reporters_lock);
+ list_for_each_entry(reporter, &devlink->reporter_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_health_reporter_fill(msg, devlink,
+ reporter,
+ DEVLINK_CMD_HEALTH_REPORTER_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&devlink->reporters_lock);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&devlink->reporters_lock);
+ }
+
+ list_for_each_entry(devlink, &devlink_list, list) {
+ if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
+ continue;
+ mutex_lock(&devlink->lock);
+ list_for_each_entry(port, &devlink->port_list, list) {
+ mutex_lock(&port->reporters_lock);
+ list_for_each_entry(reporter, &port->reporter_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_health_reporter_fill(msg, devlink, reporter,
+ DEVLINK_CMD_HEALTH_REPORTER_GET,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&port->reporters_lock);
+ mutex_unlock(&devlink->lock);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&port->reporters_lock);
+ }
+ mutex_unlock(&devlink->lock);
+ }
+out:
+ mutex_unlock(&devlink_mutex);
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->recover &&
+ (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] ||
+ info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ if (!reporter->ops->dump &&
+ info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD])
+ reporter->graceful_period =
+ nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]);
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])
+ reporter->auto_recover =
+ nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]);
+
+ if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP])
+ reporter->auto_dump =
+ nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP]);
+
+ devlink_health_reporter_put(reporter);
+ return 0;
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ err = devlink_health_reporter_recover(reporter, NULL, info->extack);
+
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ struct devlink_fmsg *fmsg;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->diagnose) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ fmsg = devlink_fmsg_alloc();
+ if (!fmsg) {
+ devlink_health_reporter_put(reporter);
+ return -ENOMEM;
+ }
+
+ err = devlink_fmsg_obj_nest_start(fmsg);
+ if (err)
+ goto out;
+
+ err = reporter->ops->diagnose(reporter, fmsg, info->extack);
+ if (err)
+ goto out;
+
+ err = devlink_fmsg_obj_nest_end(fmsg);
+ if (err)
+ goto out;
+
+ err = devlink_fmsg_snd(fmsg, info,
+ DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0);
+
+out:
+ devlink_fmsg_free(fmsg);
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_dump_get_dumpit(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct devlink_health_reporter *reporter;
+ u64 start = cb->args[0];
+ int err;
+
+ reporter = devlink_health_reporter_get_from_cb(cb);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->dump) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ mutex_lock(&reporter->dump_lock);
+ if (!start) {
+ err = devlink_health_do_dump(reporter, NULL, cb->extack);
+ if (err)
+ goto unlock;
+ cb->args[1] = reporter->dump_ts;
+ }
+ if (!reporter->dump_fmsg || cb->args[1] != reporter->dump_ts) {
+ NL_SET_ERR_MSG_MOD(cb->extack, "Dump trampled, please retry");
+ err = -EAGAIN;
+ goto unlock;
+ }
+
+ err = devlink_fmsg_dumpit(reporter->dump_fmsg, skb, cb,
+ DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET);
+unlock:
+ mutex_unlock(&reporter->dump_lock);
+out:
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+static int
+devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->dump) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ mutex_lock(&reporter->dump_lock);
+ devlink_health_dump_clear(reporter);
+ mutex_unlock(&reporter->dump_lock);
+ devlink_health_reporter_put(reporter);
+ return 0;
+}
+
+static int devlink_nl_cmd_health_reporter_test_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_health_reporter *reporter;
+ int err;
+
+ reporter = devlink_health_reporter_get_from_info(devlink, info);
+ if (!reporter)
+ return -EINVAL;
+
+ if (!reporter->ops->test) {
+ devlink_health_reporter_put(reporter);
+ return -EOPNOTSUPP;
+ }
+
+ err = reporter->ops->test(reporter, info->extack);
+
+ devlink_health_reporter_put(reporter);
+ return err;
+}
+
+struct devlink_stats {
+ u64 rx_bytes;
+ u64 rx_packets;
+ struct u64_stats_sync syncp;
+};
+
+/**
+ * struct devlink_trap_policer_item - Packet trap policer attributes.
+ * @policer: Immutable packet trap policer attributes.
+ * @rate: Rate in packets / sec.
+ * @burst: Burst size in packets.
+ * @list: trap_policer_list member.
+ *
+ * Describes packet trap policer attributes. Created by devlink during trap
+ * policer registration.
+ */
+struct devlink_trap_policer_item {
+ const struct devlink_trap_policer *policer;
+ u64 rate;
+ u64 burst;
+ struct list_head list;
+};
+
+/**
+ * struct devlink_trap_group_item - Packet trap group attributes.
+ * @group: Immutable packet trap group attributes.
+ * @policer_item: Associated policer item. Can be NULL.
+ * @list: trap_group_list member.
+ * @stats: Trap group statistics.
+ *
+ * Describes packet trap group attributes. Created by devlink during trap
+ * group registration.
+ */
+struct devlink_trap_group_item {
+ const struct devlink_trap_group *group;
+ struct devlink_trap_policer_item *policer_item;
+ struct list_head list;
+ struct devlink_stats __percpu *stats;
+};
+
+/**
+ * struct devlink_trap_item - Packet trap attributes.
+ * @trap: Immutable packet trap attributes.
+ * @group_item: Associated group item.
+ * @list: trap_list member.
+ * @action: Trap action.
+ * @stats: Trap statistics.
+ * @priv: Driver private information.
+ *
+ * Describes both mutable and immutable packet trap attributes. Created by
+ * devlink during trap registration and used for all trap related operations.
+ */
+struct devlink_trap_item {
+ const struct devlink_trap *trap;
+ struct devlink_trap_group_item *group_item;
+ struct list_head list;
+ enum devlink_trap_action action;
+ struct devlink_stats __percpu *stats;
+ void *priv;
+};
+
+static struct devlink_trap_policer_item *
+devlink_trap_policer_item_lookup(struct devlink *devlink, u32 id)
+{
+ struct devlink_trap_policer_item *policer_item;
+
+ list_for_each_entry(policer_item, &devlink->trap_policer_list, list) {
+ if (policer_item->policer->id == id)
+ return policer_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_item *
+devlink_trap_item_lookup(struct devlink *devlink, const char *name)
+{
+ struct devlink_trap_item *trap_item;
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (!strcmp(trap_item->trap->name, name))
+ return trap_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_item *
+devlink_trap_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ struct nlattr *attr;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_NAME])
+ return NULL;
+ attr = info->attrs[DEVLINK_ATTR_TRAP_NAME];
+
+ return devlink_trap_item_lookup(devlink, nla_data(attr));
+}
+
+static int
+devlink_trap_action_get_from_info(struct genl_info *info,
+ enum devlink_trap_action *p_trap_action)
+{
+ u8 val;
+
+ val = nla_get_u8(info->attrs[DEVLINK_ATTR_TRAP_ACTION]);
+ switch (val) {
+ case DEVLINK_TRAP_ACTION_DROP:
+ case DEVLINK_TRAP_ACTION_TRAP:
+ case DEVLINK_TRAP_ACTION_MIRROR:
+ *p_trap_action = val;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int devlink_trap_metadata_put(struct sk_buff *msg,
+ const struct devlink_trap *trap)
+{
+ struct nlattr *attr;
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_TRAP_METADATA);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT) &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_IN_PORT))
+ goto nla_put_failure;
+ if ((trap->metadata_cap & DEVLINK_TRAP_METADATA_TYPE_F_FA_COOKIE) &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_METADATA_TYPE_FA_COOKIE))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static void devlink_trap_stats_read(struct devlink_stats __percpu *trap_stats,
+ struct devlink_stats *stats)
+{
+ int i;
+
+ memset(stats, 0, sizeof(*stats));
+ for_each_possible_cpu(i) {
+ struct devlink_stats *cpu_stats;
+ u64 rx_packets, rx_bytes;
+ unsigned int start;
+
+ cpu_stats = per_cpu_ptr(trap_stats, i);
+ do {
+ start = u64_stats_fetch_begin_irq(&cpu_stats->syncp);
+ rx_packets = cpu_stats->rx_packets;
+ rx_bytes = cpu_stats->rx_bytes;
+ } while (u64_stats_fetch_retry_irq(&cpu_stats->syncp, start));
+
+ stats->rx_packets += rx_packets;
+ stats->rx_bytes += rx_bytes;
+ }
+}
+
+static int devlink_trap_stats_put(struct sk_buff *msg,
+ struct devlink_stats __percpu *trap_stats)
+{
+ struct devlink_stats stats;
+ struct nlattr *attr;
+
+ devlink_trap_stats_read(trap_stats, &stats);
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_PACKETS,
+ stats.rx_packets, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_BYTES,
+ stats.rx_bytes, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_trap_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ struct devlink_trap_group_item *group_item = trap_item->group_item;
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
+ group_item->group->name))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_NAME, trap_item->trap->name))
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_TYPE, trap_item->trap->type))
+ goto nla_put_failure;
+
+ if (trap_item->trap->generic &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, DEVLINK_ATTR_TRAP_ACTION, trap_item->action))
+ goto nla_put_failure;
+
+ err = devlink_trap_metadata_put(msg, trap_item->trap);
+ if (err)
+ goto nla_put_failure;
+
+ err = devlink_trap_stats_put(msg, trap_item->stats);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_item *trap_item;
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_list))
+ return -EOPNOTSUPP;
+
+ trap_item = devlink_trap_item_get_from_info(devlink, info);
+ if (!trap_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_fill(msg, devlink, trap_item,
+ DEVLINK_CMD_TRAP_NEW, info->snd_portid,
+ info->snd_seq, 0);
+ if (err)
+ goto err_trap_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ struct devlink_trap_item *trap_item;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ int idx = 0;
+ int err;
+
+ mutex_lock(&devlink_mutex);
+ list_for_each_entry(devlink, &devlink_list, list) {
+ if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
+ continue;
+ mutex_lock(&devlink->lock);
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_fill(msg, devlink, trap_item,
+ DEVLINK_CMD_TRAP_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&devlink->lock);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&devlink->lock);
+ }
+out:
+ mutex_unlock(&devlink_mutex);
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int __devlink_trap_action_set(struct devlink *devlink,
+ struct devlink_trap_item *trap_item,
+ enum devlink_trap_action trap_action,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ if (trap_item->action != trap_action &&
+ trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP) {
+ NL_SET_ERR_MSG_MOD(extack, "Cannot change action of non-drop traps. Skipping");
+ return 0;
+ }
+
+ err = devlink->ops->trap_action_set(devlink, trap_item->trap,
+ trap_action, extack);
+ if (err)
+ return err;
+
+ trap_item->action = trap_action;
+
+ return 0;
+}
+
+static int devlink_trap_action_set(struct devlink *devlink,
+ struct devlink_trap_item *trap_item,
+ struct genl_info *info)
+{
+ enum devlink_trap_action trap_action;
+ int err;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
+ return 0;
+
+ err = devlink_trap_action_get_from_info(info, &trap_action);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
+ return -EINVAL;
+ }
+
+ return __devlink_trap_action_set(devlink, trap_item, trap_action,
+ info->extack);
+}
+
+static int devlink_nl_cmd_trap_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_item *trap_item;
+ int err;
+
+ if (list_empty(&devlink->trap_list))
+ return -EOPNOTSUPP;
+
+ trap_item = devlink_trap_item_get_from_info(devlink, info);
+ if (!trap_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap");
+ return -ENOENT;
+ }
+
+ err = devlink_trap_action_set(devlink, trap_item, info);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_lookup(struct devlink *devlink, const char *name)
+{
+ struct devlink_trap_group_item *group_item;
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list) {
+ if (!strcmp(group_item->group->name, name))
+ return group_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_lookup_by_id(struct devlink *devlink, u16 id)
+{
+ struct devlink_trap_group_item *group_item;
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list) {
+ if (group_item->group->id == id)
+ return group_item;
+ }
+
+ return NULL;
+}
+
+static struct devlink_trap_group_item *
+devlink_trap_group_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ char *name;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME])
+ return NULL;
+ name = nla_data(info->attrs[DEVLINK_ATTR_TRAP_GROUP_NAME]);
+
+ return devlink_trap_group_item_lookup(devlink, name);
+}
+
+static int
+devlink_nl_trap_group_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_string(msg, DEVLINK_ATTR_TRAP_GROUP_NAME,
+ group_item->group->name))
+ goto nla_put_failure;
+
+ if (group_item->group->generic &&
+ nla_put_flag(msg, DEVLINK_ATTR_TRAP_GENERIC))
+ goto nla_put_failure;
+
+ if (group_item->policer_item &&
+ nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
+ group_item->policer_item->policer->id))
+ goto nla_put_failure;
+
+ err = devlink_trap_stats_put(msg, group_item->stats);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_group_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_group_item *group_item;
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_group_list))
+ return -EOPNOTSUPP;
+
+ group_item = devlink_trap_group_item_get_from_info(devlink, info);
+ if (!group_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_group_fill(msg, devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err)
+ goto err_trap_group_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_group_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
+ struct devlink_trap_group_item *group_item;
+ u32 portid = NETLINK_CB(cb->skb).portid;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ int idx = 0;
+ int err;
+
+ mutex_lock(&devlink_mutex);
+ list_for_each_entry(devlink, &devlink_list, list) {
+ if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
+ continue;
+ mutex_lock(&devlink->lock);
+ list_for_each_entry(group_item, &devlink->trap_group_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_group_fill(msg, devlink,
+ group_item, cmd,
+ portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&devlink->lock);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&devlink->lock);
+ }
+out:
+ mutex_unlock(&devlink_mutex);
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+__devlink_trap_group_action_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ enum devlink_trap_action trap_action,
+ struct netlink_ext_ack *extack)
+{
+ const char *group_name = group_item->group->name;
+ struct devlink_trap_item *trap_item;
+ int err;
+
+ if (devlink->ops->trap_group_action_set) {
+ err = devlink->ops->trap_group_action_set(devlink, group_item->group,
+ trap_action, extack);
+ if (err)
+ return err;
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (strcmp(trap_item->group_item->group->name, group_name))
+ continue;
+ if (trap_item->action != trap_action &&
+ trap_item->trap->type != DEVLINK_TRAP_TYPE_DROP)
+ continue;
+ trap_item->action = trap_action;
+ }
+
+ return 0;
+ }
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list) {
+ if (strcmp(trap_item->group_item->group->name, group_name))
+ continue;
+ err = __devlink_trap_action_set(devlink, trap_item,
+ trap_action, extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int
+devlink_trap_group_action_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ struct genl_info *info, bool *p_modified)
+{
+ enum devlink_trap_action trap_action;
+ int err;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_ACTION])
+ return 0;
+
+ err = devlink_trap_action_get_from_info(info, &trap_action);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Invalid trap action");
+ return -EINVAL;
+ }
+
+ err = __devlink_trap_group_action_set(devlink, group_item, trap_action,
+ info->extack);
+ if (err)
+ return err;
+
+ *p_modified = true;
+
+ return 0;
+}
+
+static int devlink_trap_group_set(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ const struct devlink_trap_policer *policer;
+ struct nlattr **attrs = info->attrs;
+ int err;
+
+ if (!attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
+ return 0;
+
+ if (!devlink->ops->trap_group_set)
+ return -EOPNOTSUPP;
+
+ policer_item = group_item->policer_item;
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_ID]) {
+ u32 policer_id;
+
+ policer_id = nla_get_u32(attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
+ policer_item = devlink_trap_policer_item_lookup(devlink,
+ policer_id);
+ if (policer_id && !policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+ }
+ policer = policer_item ? policer_item->policer : NULL;
+
+ err = devlink->ops->trap_group_set(devlink, group_item->group, policer,
+ extack);
+ if (err)
+ return err;
+
+ group_item->policer_item = policer_item;
+
+ return 0;
+}
+
+static int devlink_nl_cmd_trap_group_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct devlink_trap_group_item *group_item;
+ bool modified = false;
+ int err;
+
+ if (list_empty(&devlink->trap_group_list))
+ return -EOPNOTSUPP;
+
+ group_item = devlink_trap_group_item_get_from_info(devlink, info);
+ if (!group_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap group");
+ return -ENOENT;
+ }
+
+ err = devlink_trap_group_action_set(devlink, group_item, info,
+ &modified);
+ if (err)
+ return err;
+
+ err = devlink_trap_group_set(devlink, group_item, info);
+ if (err)
+ goto err_trap_group_set;
+
+ return 0;
+
+err_trap_group_set:
+ if (modified)
+ NL_SET_ERR_MSG_MOD(extack, "Trap group set failed, but some changes were committed already");
+ return err;
+}
+
+static struct devlink_trap_policer_item *
+devlink_trap_policer_item_get_from_info(struct devlink *devlink,
+ struct genl_info *info)
+{
+ u32 id;
+
+ if (!info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID])
+ return NULL;
+ id = nla_get_u32(info->attrs[DEVLINK_ATTR_TRAP_POLICER_ID]);
+
+ return devlink_trap_policer_item_lookup(devlink, id);
+}
+
+static int
+devlink_trap_policer_stats_put(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct nlattr *attr;
+ u64 drops;
+ int err;
+
+ if (!devlink->ops->trap_policer_counter_get)
+ return 0;
+
+ err = devlink->ops->trap_policer_counter_get(devlink, policer, &drops);
+ if (err)
+ return err;
+
+ attr = nla_nest_start(msg, DEVLINK_ATTR_STATS);
+ if (!attr)
+ return -EMSGSIZE;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_STATS_RX_DROPPED, drops,
+ DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ nla_nest_end(msg, attr);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(msg, attr);
+ return -EMSGSIZE;
+}
+
+static int
+devlink_nl_trap_policer_fill(struct sk_buff *msg, struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd, u32 portid, u32 seq,
+ int flags)
+{
+ void *hdr;
+ int err;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, DEVLINK_ATTR_TRAP_POLICER_ID,
+ policer_item->policer->id))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_RATE,
+ policer_item->rate, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, DEVLINK_ATTR_TRAP_POLICER_BURST,
+ policer_item->burst, DEVLINK_ATTR_PAD))
+ goto nla_put_failure;
+
+ err = devlink_trap_policer_stats_put(msg, devlink,
+ policer_item->policer);
+ if (err)
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_trap_policer_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+ struct sk_buff *msg;
+ int err;
+
+ if (list_empty(&devlink->trap_policer_list))
+ return -EOPNOTSUPP;
+
+ policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
+ if (!policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_nl_trap_policer_fill(msg, devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW,
+ info->snd_portid, info->snd_seq, 0);
+ if (err)
+ goto err_trap_policer_fill;
+
+ return genlmsg_reply(msg, info);
+
+err_trap_policer_fill:
+ nlmsg_free(msg);
+ return err;
+}
+
+static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
+ struct netlink_callback *cb)
+{
+ enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
+ struct devlink_trap_policer_item *policer_item;
+ u32 portid = NETLINK_CB(cb->skb).portid;
+ struct devlink *devlink;
+ int start = cb->args[0];
+ int idx = 0;
+ int err;
+
+ mutex_lock(&devlink_mutex);
+ list_for_each_entry(devlink, &devlink_list, list) {
+ if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
+ continue;
+ mutex_lock(&devlink->lock);
+ list_for_each_entry(policer_item, &devlink->trap_policer_list,
+ list) {
+ if (idx < start) {
+ idx++;
+ continue;
+ }
+ err = devlink_nl_trap_policer_fill(msg, devlink,
+ policer_item, cmd,
+ portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI);
+ if (err) {
+ mutex_unlock(&devlink->lock);
+ goto out;
+ }
+ idx++;
+ }
+ mutex_unlock(&devlink->lock);
+ }
+out:
+ mutex_unlock(&devlink_mutex);
+
+ cb->args[0] = idx;
+ return msg->len;
+}
+
+static int
+devlink_trap_policer_set(struct devlink *devlink,
+ struct devlink_trap_policer_item *policer_item,
+ struct genl_info *info)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct nlattr **attrs = info->attrs;
+ u64 rate, burst;
+ int err;
+
+ rate = policer_item->rate;
+ burst = policer_item->burst;
+
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_RATE])
+ rate = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_RATE]);
+
+ if (attrs[DEVLINK_ATTR_TRAP_POLICER_BURST])
+ burst = nla_get_u64(attrs[DEVLINK_ATTR_TRAP_POLICER_BURST]);
+
+ if (rate < policer_item->policer->min_rate) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer rate lower than limit");
+ return -EINVAL;
+ }
+
+ if (rate > policer_item->policer->max_rate) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer rate higher than limit");
+ return -EINVAL;
+ }
+
+ if (burst < policer_item->policer->min_burst) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer burst size lower than limit");
+ return -EINVAL;
+ }
+
+ if (burst > policer_item->policer->max_burst) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer burst size higher than limit");
+ return -EINVAL;
+ }
+
+ err = devlink->ops->trap_policer_set(devlink, policer_item->policer,
+ rate, burst, info->extack);
+ if (err)
+ return err;
+
+ policer_item->rate = rate;
+ policer_item->burst = burst;
+
+ return 0;
+}
+
+static int devlink_nl_cmd_trap_policer_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct netlink_ext_ack *extack = info->extack;
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (list_empty(&devlink->trap_policer_list))
+ return -EOPNOTSUPP;
+
+ if (!devlink->ops->trap_policer_set)
+ return -EOPNOTSUPP;
+
+ policer_item = devlink_trap_policer_item_get_from_info(devlink, info);
+ if (!policer_item) {
+ NL_SET_ERR_MSG_MOD(extack, "Device did not register this trap policer");
+ return -ENOENT;
+ }
+
+ return devlink_trap_policer_set(devlink, policer_item, info);
+}
+
static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
+ [DEVLINK_ATTR_UNSPEC] = { .strict_start_type =
+ DEVLINK_ATTR_TRAP_POLICER_ID },
[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
[DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
- [DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_PORT_TYPE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_PORT_TYPE_AUTO,
+ DEVLINK_PORT_TYPE_IB),
[DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
[DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 },
[DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 },
@@ -3597,7 +7558,8 @@
[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
[DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
[DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
- [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_ESWITCH_MODE] = NLA_POLICY_RANGE(NLA_U16, DEVLINK_ESWITCH_MODE_LEGACY,
+ DEVLINK_ESWITCH_MODE_SWITCHDEV),
[DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
[DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
[DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
@@ -3611,225 +7573,340 @@
[DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 },
[DEVLINK_ATTR_REGION_CHUNK_ADDR] = { .type = NLA_U64 },
[DEVLINK_ATTR_REGION_CHUNK_LEN] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_FLASH_UPDATE_FILE_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_FLASH_UPDATE_COMPONENT] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_FLASH_UPDATE_OVERWRITE_MASK] =
+ NLA_POLICY_BITFIELD32(DEVLINK_SUPPORTED_FLASH_OVERWRITE_SECTIONS),
+ [DEVLINK_ATTR_TRAP_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_TRAP_ACTION] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_TRAP_GROUP_NAME] = { .type = NLA_NUL_STRING },
+ [DEVLINK_ATTR_NETNS_PID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_NETNS_FD] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_NETNS_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_DUMP] = { .type = NLA_U8 },
+ [DEVLINK_ATTR_TRAP_POLICER_ID] = { .type = NLA_U32 },
+ [DEVLINK_ATTR_TRAP_POLICER_RATE] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_TRAP_POLICER_BURST] = { .type = NLA_U64 },
+ [DEVLINK_ATTR_PORT_FUNCTION] = { .type = NLA_NESTED },
+ [DEVLINK_ATTR_RELOAD_ACTION] = NLA_POLICY_RANGE(NLA_U8, DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ DEVLINK_RELOAD_ACTION_MAX),
+ [DEVLINK_ATTR_RELOAD_LIMITS] = NLA_POLICY_BITFIELD32(DEVLINK_RELOAD_LIMITS_VALID_MASK),
};
-static const struct genl_ops devlink_nl_ops[] = {
+static const struct genl_small_ops devlink_nl_ops[] = {
{
.cmd = DEVLINK_CMD_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_get_doit,
.dumpit = devlink_nl_cmd_get_dumpit,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_PORT_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_port_get_doit,
.dumpit = devlink_nl_cmd_port_get_dumpit,
- .policy = devlink_nl_policy,
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_PORT_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_port_set_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
},
{
.cmd = DEVLINK_CMD_PORT_SPLIT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_port_split_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NO_LOCK,
+ .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
},
{
.cmd = DEVLINK_CMD_PORT_UNSPLIT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_port_unsplit_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NO_LOCK,
+ .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
},
{
.cmd = DEVLINK_CMD_SB_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_get_doit,
.dumpit = devlink_nl_cmd_sb_get_dumpit,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NEED_SB,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_SB_POOL_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_pool_get_doit,
.dumpit = devlink_nl_cmd_sb_pool_get_dumpit,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NEED_SB,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_SB_POOL_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_pool_set_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NEED_SB,
},
{
.cmd = DEVLINK_CMD_SB_PORT_POOL_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_port_pool_get_doit,
.dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
- DEVLINK_NL_FLAG_NEED_SB,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_SB_PORT_POOL_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_port_pool_set_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
- DEVLINK_NL_FLAG_NEED_SB,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
},
{
.cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit,
.dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
- DEVLINK_NL_FLAG_NEED_SB,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_PORT |
- DEVLINK_NL_FLAG_NEED_SB,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
},
{
.cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_occ_snapshot_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NEED_SB,
},
{
.cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_sb_occ_max_clear_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NEED_SB,
},
{
.cmd = DEVLINK_CMD_ESWITCH_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_eswitch_get_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
+ .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
},
{
.cmd = DEVLINK_CMD_ESWITCH_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_eswitch_set_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NO_LOCK,
+ .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
},
{
.cmd = DEVLINK_CMD_DPIPE_TABLE_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_dpipe_table_get,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_dpipe_entries_get,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_DPIPE_HEADERS_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_dpipe_headers_get,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_dpipe_table_counters_set,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
},
{
.cmd = DEVLINK_CMD_RESOURCE_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_resource_set,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
},
{
.cmd = DEVLINK_CMD_RESOURCE_DUMP,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_resource_dump,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_RELOAD,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_reload,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
- DEVLINK_NL_FLAG_NO_LOCK,
+ .internal_flags = DEVLINK_NL_FLAG_NO_LOCK,
},
{
.cmd = DEVLINK_CMD_PARAM_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_param_get_doit,
.dumpit = devlink_nl_cmd_param_get_dumpit,
- .policy = devlink_nl_policy,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
/* can be retrieved by unprivileged users */
},
{
.cmd = DEVLINK_CMD_PARAM_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_param_set_doit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_PARAM_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_param_get_doit,
+ .dumpit = devlink_nl_cmd_port_param_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_PORT_PARAM_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_port_param_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
},
{
.cmd = DEVLINK_CMD_REGION_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_region_get_doit,
.dumpit = devlink_nl_cmd_region_get_dumpit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
+ },
+ {
+ .cmd = DEVLINK_CMD_REGION_NEW,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_region_new,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = DEVLINK_CMD_REGION_DEL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = devlink_nl_cmd_region_del,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
},
{
.cmd = DEVLINK_CMD_REGION_READ,
+ .validate = GENL_DONT_VALIDATE_STRICT |
+ GENL_DONT_VALIDATE_DUMP_STRICT,
.dumpit = devlink_nl_cmd_region_read_dumpit,
- .policy = devlink_nl_policy,
.flags = GENL_ADMIN_PERM,
- .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
+ },
+ {
+ .cmd = DEVLINK_CMD_INFO_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_info_get_doit,
+ .dumpit = devlink_nl_cmd_info_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_get_doit,
+ .dumpit = devlink_nl_cmd_health_reporter_get_dumpit,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
+ DEVLINK_NL_FLAG_NO_LOCK,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
+ DEVLINK_NL_FLAG_NO_LOCK,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_recover_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
+ DEVLINK_NL_FLAG_NO_LOCK,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_diagnose_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
+ DEVLINK_NL_FLAG_NO_LOCK,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET,
+ .validate = GENL_DONT_VALIDATE_STRICT |
+ GENL_DONT_VALIDATE_DUMP_STRICT,
+ .dumpit = devlink_nl_cmd_health_reporter_dump_get_dumpit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_dump_clear_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
+ DEVLINK_NL_FLAG_NO_LOCK,
+ },
+ {
+ .cmd = DEVLINK_CMD_HEALTH_REPORTER_TEST,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_health_reporter_test_doit,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK_OR_PORT |
+ DEVLINK_NL_FLAG_NO_LOCK,
+ },
+ {
+ .cmd = DEVLINK_CMD_FLASH_UPDATE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = devlink_nl_cmd_flash_update,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GET,
+ .doit = devlink_nl_cmd_trap_get_doit,
+ .dumpit = devlink_nl_cmd_trap_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_SET,
+ .doit = devlink_nl_cmd_trap_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GROUP_GET,
+ .doit = devlink_nl_cmd_trap_group_get_doit,
+ .dumpit = devlink_nl_cmd_trap_group_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_GROUP_SET,
+ .doit = devlink_nl_cmd_trap_group_set_doit,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_POLICER_GET,
+ .doit = devlink_nl_cmd_trap_policer_get_doit,
+ .dumpit = devlink_nl_cmd_trap_policer_get_dumpit,
+ /* can be retrieved by unprivileged users */
+ },
+ {
+ .cmd = DEVLINK_CMD_TRAP_POLICER_SET,
+ .doit = devlink_nl_cmd_trap_policer_set_doit,
+ .flags = GENL_ADMIN_PERM,
},
};
@@ -3837,15 +7914,45 @@
.name = DEVLINK_GENL_NAME,
.version = DEVLINK_GENL_VERSION,
.maxattr = DEVLINK_ATTR_MAX,
+ .policy = devlink_nl_policy,
.netnsok = true,
.pre_doit = devlink_nl_pre_doit,
.post_doit = devlink_nl_post_doit,
.module = THIS_MODULE,
- .ops = devlink_nl_ops,
- .n_ops = ARRAY_SIZE(devlink_nl_ops),
+ .small_ops = devlink_nl_ops,
+ .n_small_ops = ARRAY_SIZE(devlink_nl_ops),
.mcgrps = devlink_nl_mcgrps,
.n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps),
};
+
+static bool devlink_reload_actions_valid(const struct devlink_ops *ops)
+{
+ const struct devlink_reload_combination *comb;
+ int i;
+
+ if (!devlink_reload_supported(ops)) {
+ if (WARN_ON(ops->reload_actions))
+ return false;
+ return true;
+ }
+
+ if (WARN_ON(!ops->reload_actions ||
+ ops->reload_actions & BIT(DEVLINK_RELOAD_ACTION_UNSPEC) ||
+ ops->reload_actions >= BIT(__DEVLINK_RELOAD_ACTION_MAX)))
+ return false;
+
+ if (WARN_ON(ops->reload_limits & BIT(DEVLINK_RELOAD_LIMIT_UNSPEC) ||
+ ops->reload_limits >= BIT(__DEVLINK_RELOAD_LIMIT_MAX)))
+ return false;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_reload_invalid_combinations); i++) {
+ comb = &devlink_reload_invalid_combinations[i];
+ if (ops->reload_actions == BIT(comb->action) &&
+ ops->reload_limits == BIT(comb->limit))
+ return false;
+ }
+ return true;
+}
/**
* devlink_alloc - Allocate new devlink instance resources
@@ -3860,18 +7967,30 @@
{
struct devlink *devlink;
+ if (WARN_ON(!ops))
+ return NULL;
+
+ if (!devlink_reload_actions_valid(ops))
+ return NULL;
+
devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
if (!devlink)
return NULL;
devlink->ops = ops;
- devlink_net_set(devlink, &init_net);
+ xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
+ __devlink_net_set(devlink, &init_net);
INIT_LIST_HEAD(&devlink->port_list);
INIT_LIST_HEAD(&devlink->sb_list);
INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
INIT_LIST_HEAD(&devlink->resource_list);
INIT_LIST_HEAD(&devlink->param_list);
INIT_LIST_HEAD(&devlink->region_list);
+ INIT_LIST_HEAD(&devlink->reporter_list);
+ INIT_LIST_HEAD(&devlink->trap_list);
+ INIT_LIST_HEAD(&devlink->trap_group_list);
+ INIT_LIST_HEAD(&devlink->trap_policer_list);
mutex_init(&devlink->lock);
+ mutex_init(&devlink->reporters_lock);
return devlink;
}
EXPORT_SYMBOL_GPL(devlink_alloc);
@@ -3880,11 +7999,13 @@
* devlink_register - Register devlink instance
*
* @devlink: devlink
+ * @dev: parent device
*/
int devlink_register(struct devlink *devlink, struct device *dev)
{
- mutex_lock(&devlink_mutex);
devlink->dev = dev;
+ devlink->registered = true;
+ mutex_lock(&devlink_mutex);
list_add_tail(&devlink->list, &devlink_list);
devlink_notify(devlink, DEVLINK_CMD_NEW);
mutex_unlock(&devlink_mutex);
@@ -3900,11 +8021,48 @@
void devlink_unregister(struct devlink *devlink)
{
mutex_lock(&devlink_mutex);
+ WARN_ON(devlink_reload_supported(devlink->ops) &&
+ devlink->reload_enabled);
devlink_notify(devlink, DEVLINK_CMD_DEL);
list_del(&devlink->list);
mutex_unlock(&devlink_mutex);
}
EXPORT_SYMBOL_GPL(devlink_unregister);
+
+/**
+ * devlink_reload_enable - Enable reload of devlink instance
+ *
+ * @devlink: devlink
+ *
+ * Should be called at end of device initialization
+ * process when reload operation is supported.
+ */
+void devlink_reload_enable(struct devlink *devlink)
+{
+ mutex_lock(&devlink_mutex);
+ devlink->reload_enabled = true;
+ mutex_unlock(&devlink_mutex);
+}
+EXPORT_SYMBOL_GPL(devlink_reload_enable);
+
+/**
+ * devlink_reload_disable - Disable reload of devlink instance
+ *
+ * @devlink: devlink
+ *
+ * Should be called at the beginning of device cleanup
+ * process when reload operation is supported.
+ */
+void devlink_reload_disable(struct devlink *devlink)
+{
+ mutex_lock(&devlink_mutex);
+ /* Mutex is taken which ensures that no reload operation is in
+ * progress while setting up forbidded flag.
+ */
+ devlink->reload_enabled = false;
+ mutex_unlock(&devlink_mutex);
+}
+EXPORT_SYMBOL_GPL(devlink_reload_disable);
/**
* devlink_free - Free devlink instance resources
@@ -3913,16 +8071,67 @@
*/
void devlink_free(struct devlink *devlink)
{
+ mutex_destroy(&devlink->reporters_lock);
+ mutex_destroy(&devlink->lock);
+ WARN_ON(!list_empty(&devlink->trap_policer_list));
+ WARN_ON(!list_empty(&devlink->trap_group_list));
+ WARN_ON(!list_empty(&devlink->trap_list));
+ WARN_ON(!list_empty(&devlink->reporter_list));
+ WARN_ON(!list_empty(&devlink->region_list));
+ WARN_ON(!list_empty(&devlink->param_list));
+ WARN_ON(!list_empty(&devlink->resource_list));
+ WARN_ON(!list_empty(&devlink->dpipe_table_list));
+ WARN_ON(!list_empty(&devlink->sb_list));
+ WARN_ON(!list_empty(&devlink->port_list));
+
+ xa_destroy(&devlink->snapshot_ids);
+
kfree(devlink);
}
EXPORT_SYMBOL_GPL(devlink_free);
+
+static void devlink_port_type_warn(struct work_struct *work)
+{
+ struct devlink_port *port = container_of(to_delayed_work(work),
+ struct devlink_port,
+ type_warn_dw);
+ dev_warn(port->devlink->dev, "Type was not set for devlink port.");
+}
+
+static bool devlink_port_type_should_warn(struct devlink_port *devlink_port)
+{
+ /* Ignore CPU and DSA flavours. */
+ return devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_CPU &&
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_DSA &&
+ devlink_port->attrs.flavour != DEVLINK_PORT_FLAVOUR_UNUSED;
+}
+
+#define DEVLINK_PORT_TYPE_WARN_TIMEOUT (HZ * 3600)
+
+static void devlink_port_type_warn_schedule(struct devlink_port *devlink_port)
+{
+ if (!devlink_port_type_should_warn(devlink_port))
+ return;
+ /* Schedule a work to WARN in case driver does not set port
+ * type within timeout.
+ */
+ schedule_delayed_work(&devlink_port->type_warn_dw,
+ DEVLINK_PORT_TYPE_WARN_TIMEOUT);
+}
+
+static void devlink_port_type_warn_cancel(struct devlink_port *devlink_port)
+{
+ if (!devlink_port_type_should_warn(devlink_port))
+ return;
+ cancel_delayed_work_sync(&devlink_port->type_warn_dw);
+}
/**
* devlink_port_register - Register devlink port
*
* @devlink: devlink
* @devlink_port: devlink port
- * @port_index
+ * @port_index: driver-specific numerical identifier of the port
*
* Register devlink port with provided port index. User can use
* any indexing, even hw-related one. devlink_port structure
@@ -3942,8 +8151,15 @@
devlink_port->devlink = devlink;
devlink_port->index = port_index;
devlink_port->registered = true;
+ spin_lock_init(&devlink_port->type_lock);
+ INIT_LIST_HEAD(&devlink_port->reporter_list);
+ mutex_init(&devlink_port->reporters_lock);
list_add_tail(&devlink_port->list, &devlink->port_list);
+ INIT_LIST_HEAD(&devlink_port->param_list);
+ INIT_LIST_HEAD(&devlink_port->region_list);
mutex_unlock(&devlink->lock);
+ INIT_DELAYED_WORK(&devlink_port->type_warn_dw, &devlink_port_type_warn);
+ devlink_port_type_warn_schedule(devlink_port);
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
return 0;
}
@@ -3958,10 +8174,14 @@
{
struct devlink *devlink = devlink_port->devlink;
+ devlink_port_type_warn_cancel(devlink_port);
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
mutex_lock(&devlink->lock);
list_del(&devlink_port->list);
mutex_unlock(&devlink->lock);
+ WARN_ON(!list_empty(&devlink_port->reporter_list));
+ WARN_ON(!list_empty(&devlink_port->region_list));
+ mutex_destroy(&devlink_port->reporters_lock);
}
EXPORT_SYMBOL_GPL(devlink_port_unregister);
@@ -3969,9 +8189,51 @@
enum devlink_port_type type,
void *type_dev)
{
+ if (WARN_ON(!devlink_port->registered))
+ return;
+ devlink_port_type_warn_cancel(devlink_port);
+ spin_lock_bh(&devlink_port->type_lock);
devlink_port->type = type;
devlink_port->type_dev = type_dev;
+ spin_unlock_bh(&devlink_port->type_lock);
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+}
+
+static void devlink_port_type_netdev_checks(struct devlink_port *devlink_port,
+ struct net_device *netdev)
+{
+ const struct net_device_ops *ops = netdev->netdev_ops;
+
+ /* If driver registers devlink port, it should set devlink port
+ * attributes accordingly so the compat functions are called
+ * and the original ops are not used.
+ */
+ if (ops->ndo_get_phys_port_name) {
+ /* Some drivers use the same set of ndos for netdevs
+ * that have devlink_port registered and also for
+ * those who don't. Make sure that ndo_get_phys_port_name
+ * returns -EOPNOTSUPP here in case it is defined.
+ * Warn if not.
+ */
+ char name[IFNAMSIZ];
+ int err;
+
+ err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name));
+ WARN_ON(err != -EOPNOTSUPP);
+ }
+ if (ops->ndo_get_port_parent_id) {
+ /* Some drivers use the same set of ndos for netdevs
+ * that have devlink_port registered and also for
+ * those who don't. Make sure that ndo_get_port_parent_id
+ * returns -EOPNOTSUPP here in case it is defined.
+ * Warn if not.
+ */
+ struct netdev_phys_item_id ppid;
+ int err;
+
+ err = ops->ndo_get_port_parent_id(netdev, &ppid);
+ WARN_ON(err != -EOPNOTSUPP);
+ }
}
/**
@@ -3983,8 +8245,14 @@
void devlink_port_type_eth_set(struct devlink_port *devlink_port,
struct net_device *netdev)
{
- return __devlink_port_type_set(devlink_port,
- DEVLINK_PORT_TYPE_ETH, netdev);
+ if (netdev)
+ devlink_port_type_netdev_checks(devlink_port, netdev);
+ else
+ dev_warn(devlink_port->devlink->dev,
+ "devlink port type for port %d set to Ethernet without a software interface reference, device type not supported by the kernel?\n",
+ devlink_port->index);
+
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev);
}
EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
@@ -3997,8 +8265,7 @@
void devlink_port_type_ib_set(struct devlink_port *devlink_port,
struct ib_device *ibdev)
{
- return __devlink_port_type_set(devlink_port,
- DEVLINK_PORT_TYPE_IB, ibdev);
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_IB, ibdev);
}
EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
@@ -4009,62 +8276,152 @@
*/
void devlink_port_type_clear(struct devlink_port *devlink_port)
{
- return __devlink_port_type_set(devlink_port,
- DEVLINK_PORT_TYPE_NOTSET, NULL);
+ __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_NOTSET, NULL);
+ devlink_port_type_warn_schedule(devlink_port);
}
EXPORT_SYMBOL_GPL(devlink_port_type_clear);
+
+static int __devlink_port_attrs_set(struct devlink_port *devlink_port,
+ enum devlink_port_flavour flavour)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+
+ devlink_port->attrs_set = true;
+ attrs->flavour = flavour;
+ if (attrs->switch_id.id_len) {
+ devlink_port->switch_port = true;
+ if (WARN_ON(attrs->switch_id.id_len > MAX_PHYS_ITEM_ID_LEN))
+ attrs->switch_id.id_len = MAX_PHYS_ITEM_ID_LEN;
+ } else {
+ devlink_port->switch_port = false;
+ }
+ return 0;
+}
/**
* devlink_port_attrs_set - Set port attributes
*
* @devlink_port: devlink port
- * @flavour: flavour of the port
- * @port_number: number of the port that is facing user, for example
- * the front panel port number
- * @split: indicates if this is split port
- * @split_subport_number: if the port is split, this is the number
- * of subport.
+ * @attrs: devlink port attrs
*/
void devlink_port_attrs_set(struct devlink_port *devlink_port,
- enum devlink_port_flavour flavour,
- u32 port_number, bool split,
- u32 split_subport_number)
+ struct devlink_port_attrs *attrs)
{
- struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
- attrs->set = true;
- attrs->flavour = flavour;
- attrs->port_number = port_number;
- attrs->split = split;
- attrs->split_subport_number = split_subport_number;
- devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+ if (WARN_ON(devlink_port->registered))
+ return;
+ devlink_port->attrs = *attrs;
+ ret = __devlink_port_attrs_set(devlink_port, attrs->flavour);
+ if (ret)
+ return;
+ WARN_ON(attrs->splittable && attrs->split);
}
EXPORT_SYMBOL_GPL(devlink_port_attrs_set);
-int devlink_port_get_phys_port_name(struct devlink_port *devlink_port,
- char *name, size_t len)
+/**
+ * devlink_port_attrs_pci_pf_set - Set PCI PF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_pf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ if (WARN_ON(devlink_port->registered))
+ return;
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_PF);
+ if (ret)
+ return;
+ attrs->pci_pf.controller = controller;
+ attrs->pci_pf.pf = pf;
+ attrs->pci_pf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_pf_set);
+
+/**
+ * devlink_port_attrs_pci_vf_set - Set PCI VF port attributes
+ *
+ * @devlink_port: devlink port
+ * @controller: associated controller number for the devlink port instance
+ * @pf: associated PF for the devlink port instance
+ * @vf: associated VF of a PF for the devlink port instance
+ * @external: indicates if the port is for an external controller
+ */
+void devlink_port_attrs_pci_vf_set(struct devlink_port *devlink_port, u32 controller,
+ u16 pf, u16 vf, bool external)
+{
+ struct devlink_port_attrs *attrs = &devlink_port->attrs;
+ int ret;
+
+ if (WARN_ON(devlink_port->registered))
+ return;
+ ret = __devlink_port_attrs_set(devlink_port,
+ DEVLINK_PORT_FLAVOUR_PCI_VF);
+ if (ret)
+ return;
+ attrs->pci_vf.controller = controller;
+ attrs->pci_vf.pf = pf;
+ attrs->pci_vf.vf = vf;
+ attrs->pci_vf.external = external;
+}
+EXPORT_SYMBOL_GPL(devlink_port_attrs_pci_vf_set);
+
+static int __devlink_port_phys_port_name_get(struct devlink_port *devlink_port,
+ char *name, size_t len)
{
struct devlink_port_attrs *attrs = &devlink_port->attrs;
int n = 0;
- if (!attrs->set)
+ if (!devlink_port->attrs_set)
return -EOPNOTSUPP;
switch (attrs->flavour) {
case DEVLINK_PORT_FLAVOUR_PHYSICAL:
if (!attrs->split)
- n = snprintf(name, len, "p%u", attrs->port_number);
+ n = snprintf(name, len, "p%u", attrs->phys.port_number);
else
- n = snprintf(name, len, "p%us%u", attrs->port_number,
- attrs->split_subport_number);
+ n = snprintf(name, len, "p%us%u",
+ attrs->phys.port_number,
+ attrs->phys.split_subport_number);
break;
case DEVLINK_PORT_FLAVOUR_CPU:
case DEVLINK_PORT_FLAVOUR_DSA:
+ case DEVLINK_PORT_FLAVOUR_UNUSED:
/* As CPU and DSA ports do not have a netdevice associated
* case should not ever happen.
*/
WARN_ON(1);
return -EINVAL;
+ case DEVLINK_PORT_FLAVOUR_PCI_PF:
+ if (attrs->pci_pf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_pf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%u", attrs->pci_pf.pf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_PCI_VF:
+ if (attrs->pci_vf.external) {
+ n = snprintf(name, len, "c%u", attrs->pci_vf.controller);
+ if (n >= len)
+ return -EINVAL;
+ len -= n;
+ name += n;
+ }
+ n = snprintf(name, len, "pf%uvf%u",
+ attrs->pci_vf.pf, attrs->pci_vf.vf);
+ break;
+ case DEVLINK_PORT_FLAVOUR_VIRTUAL:
+ return -EOPNOTSUPP;
}
if (n >= len)
@@ -4072,7 +8429,6 @@
return 0;
}
-EXPORT_SYMBOL_GPL(devlink_port_get_phys_port_name);
int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
u32 size, u16 ingress_pools_count,
@@ -4174,7 +8530,7 @@
rcu_read_lock();
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name);
+ table_name, devlink);
enabled = false;
if (table)
enabled = table->counters_enabled;
@@ -4198,26 +8554,34 @@
void *priv, bool counter_control_extern)
{
struct devlink_dpipe_table *table;
-
- if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
- return -EEXIST;
+ int err = 0;
if (WARN_ON(!table_ops->size_get))
return -EINVAL;
+ mutex_lock(&devlink->lock);
+
+ if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
+ devlink)) {
+ err = -EEXIST;
+ goto unlock;
+ }
+
table = kzalloc(sizeof(*table), GFP_KERNEL);
- if (!table)
- return -ENOMEM;
+ if (!table) {
+ err = -ENOMEM;
+ goto unlock;
+ }
table->name = table_name;
table->table_ops = table_ops;
table->priv = priv;
table->counter_control_extern = counter_control_extern;
- mutex_lock(&devlink->lock);
list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
+unlock:
mutex_unlock(&devlink->lock);
- return 0;
+ return err;
}
EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
@@ -4234,7 +8598,7 @@
mutex_lock(&devlink->lock);
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name);
+ table_name, devlink);
if (!table)
goto unlock;
list_del_rcu(&table->list);
@@ -4251,13 +8615,10 @@
*
* @devlink: devlink
* @resource_name: resource's name
- * @top_hierarchy: top hierarchy
- * @reload_required: reload is required for new configuration to
- * apply
* @resource_size: resource's size
* @resource_id: resource's id
- * @parent_reosurce_id: resource's parent id
- * @size params: size parameters
+ * @parent_resource_id: resource's parent id
+ * @size_params: size parameters
*/
int devlink_resource_register(struct devlink *devlink,
const char *resource_name,
@@ -4394,7 +8755,7 @@
mutex_lock(&devlink->lock);
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
- table_name);
+ table_name, devlink);
if (!table) {
err = -EINVAL;
goto out;
@@ -4460,6 +8821,71 @@
}
EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister);
+static int devlink_param_verify(const struct devlink_param *param)
+{
+ if (!param || !param->name || !param->supported_cmodes)
+ return -EINVAL;
+ if (param->generic)
+ return devlink_param_generic_verify(param);
+ else
+ return devlink_param_driver_verify(param);
+}
+
+static int __devlink_params_register(struct devlink *devlink,
+ unsigned int port_index,
+ struct list_head *param_list,
+ const struct devlink_param *params,
+ size_t params_count,
+ enum devlink_command reg_cmd,
+ enum devlink_command unreg_cmd)
+{
+ const struct devlink_param *param = params;
+ int i;
+ int err;
+
+ mutex_lock(&devlink->lock);
+ for (i = 0; i < params_count; i++, param++) {
+ err = devlink_param_verify(param);
+ if (err)
+ goto rollback;
+
+ err = devlink_param_register_one(devlink, port_index,
+ param_list, param, reg_cmd);
+ if (err)
+ goto rollback;
+ }
+
+ mutex_unlock(&devlink->lock);
+ return 0;
+
+rollback:
+ if (!i)
+ goto unlock;
+ for (param--; i > 0; i--, param--)
+ devlink_param_unregister_one(devlink, port_index, param_list,
+ param, unreg_cmd);
+unlock:
+ mutex_unlock(&devlink->lock);
+ return err;
+}
+
+static void __devlink_params_unregister(struct devlink *devlink,
+ unsigned int port_index,
+ struct list_head *param_list,
+ const struct devlink_param *params,
+ size_t params_count,
+ enum devlink_command cmd)
+{
+ const struct devlink_param *param = params;
+ int i;
+
+ mutex_lock(&devlink->lock);
+ for (i = 0; i < params_count; i++, param++)
+ devlink_param_unregister_one(devlink, 0, param_list, param,
+ cmd);
+ mutex_unlock(&devlink->lock);
+}
+
/**
* devlink_params_register - register configuration parameters
*
@@ -4473,41 +8899,10 @@
const struct devlink_param *params,
size_t params_count)
{
- const struct devlink_param *param = params;
- int i;
- int err;
-
- mutex_lock(&devlink->lock);
- for (i = 0; i < params_count; i++, param++) {
- if (!param || !param->name || !param->supported_cmodes) {
- err = -EINVAL;
- goto rollback;
- }
- if (param->generic) {
- err = devlink_param_generic_verify(param);
- if (err)
- goto rollback;
- } else {
- err = devlink_param_driver_verify(param);
- if (err)
- goto rollback;
- }
- err = devlink_param_register_one(devlink, param);
- if (err)
- goto rollback;
- }
-
- mutex_unlock(&devlink->lock);
- return 0;
-
-rollback:
- if (!i)
- goto unlock;
- for (param--; i > 0; i--, param--)
- devlink_param_unregister_one(devlink, param);
-unlock:
- mutex_unlock(&devlink->lock);
- return err;
+ return __devlink_params_register(devlink, 0, &devlink->param_list,
+ params, params_count,
+ DEVLINK_CMD_PARAM_NEW,
+ DEVLINK_CMD_PARAM_DEL);
}
EXPORT_SYMBOL_GPL(devlink_params_register);
@@ -4521,15 +8916,145 @@
const struct devlink_param *params,
size_t params_count)
{
- const struct devlink_param *param = params;
- int i;
-
- mutex_lock(&devlink->lock);
- for (i = 0; i < params_count; i++, param++)
- devlink_param_unregister_one(devlink, param);
- mutex_unlock(&devlink->lock);
+ return __devlink_params_unregister(devlink, 0, &devlink->param_list,
+ params, params_count,
+ DEVLINK_CMD_PARAM_DEL);
}
EXPORT_SYMBOL_GPL(devlink_params_unregister);
+
+/**
+ * devlink_params_publish - publish configuration parameters
+ *
+ * @devlink: devlink
+ *
+ * Publish previously registered configuration parameters.
+ */
+void devlink_params_publish(struct devlink *devlink)
+{
+ struct devlink_param_item *param_item;
+
+ list_for_each_entry(param_item, &devlink->param_list, list) {
+ if (param_item->published)
+ continue;
+ param_item->published = true;
+ devlink_param_notify(devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_NEW);
+ }
+}
+EXPORT_SYMBOL_GPL(devlink_params_publish);
+
+/**
+ * devlink_params_unpublish - unpublish configuration parameters
+ *
+ * @devlink: devlink
+ *
+ * Unpublish previously registered configuration parameters.
+ */
+void devlink_params_unpublish(struct devlink *devlink)
+{
+ struct devlink_param_item *param_item;
+
+ list_for_each_entry(param_item, &devlink->param_list, list) {
+ if (!param_item->published)
+ continue;
+ param_item->published = false;
+ devlink_param_notify(devlink, 0, param_item,
+ DEVLINK_CMD_PARAM_DEL);
+ }
+}
+EXPORT_SYMBOL_GPL(devlink_params_unpublish);
+
+/**
+ * devlink_port_params_register - register port configuration parameters
+ *
+ * @devlink_port: devlink port
+ * @params: configuration parameters array
+ * @params_count: number of parameters provided
+ *
+ * Register the configuration parameters supported by the port.
+ */
+int devlink_port_params_register(struct devlink_port *devlink_port,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ return __devlink_params_register(devlink_port->devlink,
+ devlink_port->index,
+ &devlink_port->param_list, params,
+ params_count,
+ DEVLINK_CMD_PORT_PARAM_NEW,
+ DEVLINK_CMD_PORT_PARAM_DEL);
+}
+EXPORT_SYMBOL_GPL(devlink_port_params_register);
+
+/**
+ * devlink_port_params_unregister - unregister port configuration
+ * parameters
+ *
+ * @devlink_port: devlink port
+ * @params: configuration parameters array
+ * @params_count: number of parameters provided
+ */
+void devlink_port_params_unregister(struct devlink_port *devlink_port,
+ const struct devlink_param *params,
+ size_t params_count)
+{
+ return __devlink_params_unregister(devlink_port->devlink,
+ devlink_port->index,
+ &devlink_port->param_list,
+ params, params_count,
+ DEVLINK_CMD_PORT_PARAM_DEL);
+}
+EXPORT_SYMBOL_GPL(devlink_port_params_unregister);
+
+static int
+__devlink_param_driverinit_value_get(struct list_head *param_list, u32 param_id,
+ union devlink_param_value *init_val)
+{
+ struct devlink_param_item *param_item;
+
+ param_item = devlink_param_find_by_id(param_list, param_id);
+ if (!param_item)
+ return -EINVAL;
+
+ if (!param_item->driverinit_value_valid ||
+ !devlink_param_cmode_is_supported(param_item->param,
+ DEVLINK_PARAM_CMODE_DRIVERINIT))
+ return -EOPNOTSUPP;
+
+ if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+ strcpy(init_val->vstr, param_item->driverinit_value.vstr);
+ else
+ *init_val = param_item->driverinit_value;
+
+ return 0;
+}
+
+static int
+__devlink_param_driverinit_value_set(struct devlink *devlink,
+ unsigned int port_index,
+ struct list_head *param_list, u32 param_id,
+ union devlink_param_value init_val,
+ enum devlink_command cmd)
+{
+ struct devlink_param_item *param_item;
+
+ param_item = devlink_param_find_by_id(param_list, param_id);
+ if (!param_item)
+ return -EINVAL;
+
+ if (!devlink_param_cmode_is_supported(param_item->param,
+ DEVLINK_PARAM_CMODE_DRIVERINIT))
+ return -EOPNOTSUPP;
+
+ if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
+ strcpy(param_item->driverinit_value.vstr, init_val.vstr);
+ else
+ param_item->driverinit_value = init_val;
+ param_item->driverinit_value_valid = true;
+
+ devlink_param_notify(devlink, port_index, param_item, cmd);
+ return 0;
+}
/**
* devlink_param_driverinit_value_get - get configuration parameter
@@ -4545,26 +9070,11 @@
int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
union devlink_param_value *init_val)
{
- struct devlink_param_item *param_item;
-
- if (!devlink->ops || !devlink->ops->reload)
+ if (!devlink_reload_supported(devlink->ops))
return -EOPNOTSUPP;
- param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
- if (!param_item)
- return -EINVAL;
-
- if (!param_item->driverinit_value_valid ||
- !devlink_param_cmode_is_supported(param_item->param,
- DEVLINK_PARAM_CMODE_DRIVERINIT))
- return -EOPNOTSUPP;
-
- if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
- strcpy(init_val->vstr, param_item->driverinit_value.vstr);
- else
- *init_val = param_item->driverinit_value;
-
- return 0;
+ return __devlink_param_driverinit_value_get(&devlink->param_list,
+ param_id, init_val);
}
EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get);
@@ -4583,26 +9093,61 @@
int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id,
union devlink_param_value init_val)
{
- struct devlink_param_item *param_item;
-
- param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
- if (!param_item)
- return -EINVAL;
-
- if (!devlink_param_cmode_is_supported(param_item->param,
- DEVLINK_PARAM_CMODE_DRIVERINIT))
- return -EOPNOTSUPP;
-
- if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING)
- strcpy(param_item->driverinit_value.vstr, init_val.vstr);
- else
- param_item->driverinit_value = init_val;
- param_item->driverinit_value_valid = true;
-
- devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
- return 0;
+ return __devlink_param_driverinit_value_set(devlink, 0,
+ &devlink->param_list,
+ param_id, init_val,
+ DEVLINK_CMD_PARAM_NEW);
}
EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set);
+
+/**
+ * devlink_port_param_driverinit_value_get - get configuration parameter
+ * value for driver initializing
+ *
+ * @devlink_port: devlink_port
+ * @param_id: parameter ID
+ * @init_val: value of parameter in driverinit configuration mode
+ *
+ * This function should be used by the driver to get driverinit
+ * configuration for initialization after reload command.
+ */
+int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
+ u32 param_id,
+ union devlink_param_value *init_val)
+{
+ struct devlink *devlink = devlink_port->devlink;
+
+ if (!devlink_reload_supported(devlink->ops))
+ return -EOPNOTSUPP;
+
+ return __devlink_param_driverinit_value_get(&devlink_port->param_list,
+ param_id, init_val);
+}
+EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_get);
+
+/**
+ * devlink_port_param_driverinit_value_set - set value of configuration
+ * parameter for driverinit
+ * configuration mode
+ *
+ * @devlink_port: devlink_port
+ * @param_id: parameter ID
+ * @init_val: value of parameter to set for driverinit configuration mode
+ *
+ * This function should be used by the driver to set driverinit
+ * configuration mode default value.
+ */
+int devlink_port_param_driverinit_value_set(struct devlink_port *devlink_port,
+ u32 param_id,
+ union devlink_param_value init_val)
+{
+ return __devlink_param_driverinit_value_set(devlink_port->devlink,
+ devlink_port->index,
+ &devlink_port->param_list,
+ param_id, init_val,
+ DEVLINK_CMD_PORT_PARAM_NEW);
+}
+EXPORT_SYMBOL_GPL(devlink_port_param_driverinit_value_set);
/**
* devlink_param_value_changed - notify devlink on a parameter's value
@@ -4615,7 +9160,6 @@
* This function should be used by the driver to notify devlink on value
* change, excluding driverinit configuration mode.
* For driverinit configuration mode driver should use the function
- * devlink_param_driverinit_value_set() instead.
*/
void devlink_param_value_changed(struct devlink *devlink, u32 param_id)
{
@@ -4624,9 +9168,36 @@
param_item = devlink_param_find_by_id(&devlink->param_list, param_id);
WARN_ON(!param_item);
- devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW);
+ devlink_param_notify(devlink, 0, param_item, DEVLINK_CMD_PARAM_NEW);
}
EXPORT_SYMBOL_GPL(devlink_param_value_changed);
+
+/**
+ * devlink_port_param_value_changed - notify devlink on a parameter's value
+ * change. Should be called by the driver
+ * right after the change.
+ *
+ * @devlink_port: devlink_port
+ * @param_id: parameter ID
+ *
+ * This function should be used by the driver to notify devlink on value
+ * change, excluding driverinit configuration mode.
+ * For driverinit configuration mode driver should use the function
+ * devlink_port_param_driverinit_value_set() instead.
+ */
+void devlink_port_param_value_changed(struct devlink_port *devlink_port,
+ u32 param_id)
+{
+ struct devlink_param_item *param_item;
+
+ param_item = devlink_param_find_by_id(&devlink_port->param_list,
+ param_id);
+ WARN_ON(!param_item);
+
+ devlink_param_notify(devlink_port->devlink, devlink_port->index,
+ param_item, DEVLINK_CMD_PORT_PARAM_NEW);
+}
+EXPORT_SYMBOL_GPL(devlink_port_param_value_changed);
/**
* devlink_param_value_str_fill - Safely fill-up the string preventing
@@ -4649,21 +9220,24 @@
* devlink_region_create - create a new address region
*
* @devlink: devlink
- * @region_name: region name
+ * @ops: region operations and name
* @region_max_snapshots: Maximum supported number of snapshots for region
* @region_size: size of region
*/
-struct devlink_region *devlink_region_create(struct devlink *devlink,
- const char *region_name,
- u32 region_max_snapshots,
- u64 region_size)
+struct devlink_region *
+devlink_region_create(struct devlink *devlink,
+ const struct devlink_region_ops *ops,
+ u32 region_max_snapshots, u64 region_size)
{
struct devlink_region *region;
int err = 0;
+ if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
+ return ERR_PTR(-EINVAL);
+
mutex_lock(&devlink->lock);
- if (devlink_region_get_by_name(devlink, region_name)) {
+ if (devlink_region_get_by_name(devlink, ops->name)) {
err = -EEXIST;
goto unlock;
}
@@ -4676,7 +9250,7 @@
region->devlink = devlink;
region->max_snapshots = region_max_snapshots;
- region->name = region_name;
+ region->ops = ops;
region->size = region_size;
INIT_LIST_HEAD(®ion->snapshot_list);
list_add_tail(®ion->list, &devlink->region_list);
@@ -4692,6 +9266,57 @@
EXPORT_SYMBOL_GPL(devlink_region_create);
/**
+ * devlink_port_region_create - create a new address region for a port
+ *
+ * @port: devlink port
+ * @ops: region operations and name
+ * @region_max_snapshots: Maximum supported number of snapshots for region
+ * @region_size: size of region
+ */
+struct devlink_region *
+devlink_port_region_create(struct devlink_port *port,
+ const struct devlink_port_region_ops *ops,
+ u32 region_max_snapshots, u64 region_size)
+{
+ struct devlink *devlink = port->devlink;
+ struct devlink_region *region;
+ int err = 0;
+
+ if (WARN_ON(!ops) || WARN_ON(!ops->destructor))
+ return ERR_PTR(-EINVAL);
+
+ mutex_lock(&devlink->lock);
+
+ if (devlink_port_region_get_by_name(port, ops->name)) {
+ err = -EEXIST;
+ goto unlock;
+ }
+
+ region = kzalloc(sizeof(*region), GFP_KERNEL);
+ if (!region) {
+ err = -ENOMEM;
+ goto unlock;
+ }
+
+ region->devlink = devlink;
+ region->port = port;
+ region->max_snapshots = region_max_snapshots;
+ region->port_ops = ops;
+ region->size = region_size;
+ INIT_LIST_HEAD(®ion->snapshot_list);
+ list_add_tail(®ion->list, &port->region_list);
+ devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW);
+
+ mutex_unlock(&devlink->lock);
+ return region;
+
+unlock:
+ mutex_unlock(&devlink->lock);
+ return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(devlink_port_region_create);
+
+/**
* devlink_region_destroy - destroy address region
*
* @region: devlink region to destroy
@@ -4705,7 +9330,7 @@
/* Free all snapshots of region */
list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list)
- devlink_region_snapshot_del(snapshot);
+ devlink_region_snapshot_del(region, snapshot);
list_del(®ion->list);
@@ -4716,101 +9341,1013 @@
EXPORT_SYMBOL_GPL(devlink_region_destroy);
/**
- * devlink_region_shapshot_id_get - get snapshot ID
+ * devlink_region_snapshot_id_get - get snapshot ID
*
* This callback should be called when adding a new snapshot,
* Driver should use the same id for multiple snapshots taken
* on multiple regions at the same time/by the same trigger.
*
+ * The caller of this function must use devlink_region_snapshot_id_put
+ * when finished creating regions using this id.
+ *
+ * Returns zero on success, or a negative error code on failure.
+ *
* @devlink: devlink
+ * @id: storage to return id
*/
-u32 devlink_region_shapshot_id_get(struct devlink *devlink)
+int devlink_region_snapshot_id_get(struct devlink *devlink, u32 *id)
{
- u32 id;
+ int err;
mutex_lock(&devlink->lock);
- id = ++devlink->snapshot_id;
+ err = __devlink_region_snapshot_id_get(devlink, id);
mutex_unlock(&devlink->lock);
- return id;
+ return err;
}
-EXPORT_SYMBOL_GPL(devlink_region_shapshot_id_get);
+EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_get);
+
+/**
+ * devlink_region_snapshot_id_put - put snapshot ID reference
+ *
+ * This should be called by a driver after finishing creating snapshots
+ * with an id. Doing so ensures that the ID can later be released in the
+ * event that all snapshots using it have been destroyed.
+ *
+ * @devlink: devlink
+ * @id: id to release reference on
+ */
+void devlink_region_snapshot_id_put(struct devlink *devlink, u32 id)
+{
+ mutex_lock(&devlink->lock);
+ __devlink_snapshot_id_decrement(devlink, id);
+ mutex_unlock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devlink_region_snapshot_id_put);
/**
* devlink_region_snapshot_create - create a new snapshot
* This will add a new snapshot of a region. The snapshot
* will be stored on the region struct and can be accessed
- * from devlink. This is useful for future analyses of snapshots.
+ * from devlink. This is useful for future analyses of snapshots.
* Multiple snapshots can be created on a region.
* The @snapshot_id should be obtained using the getter function.
*
- * @devlink_region: devlink region of the snapshot
- * @data_len: size of snapshot data
+ * @region: devlink region of the snapshot
* @data: snapshot data
* @snapshot_id: snapshot id to be created
- * @data_destructor: pointer to destructor function to free data
*/
-int devlink_region_snapshot_create(struct devlink_region *region, u64 data_len,
- u8 *data, u32 snapshot_id,
- devlink_snapshot_data_dest_t *data_destructor)
+int devlink_region_snapshot_create(struct devlink_region *region,
+ u8 *data, u32 snapshot_id)
{
struct devlink *devlink = region->devlink;
- struct devlink_snapshot *snapshot;
int err;
mutex_lock(&devlink->lock);
-
- /* check if region can hold one more snapshot */
- if (region->cur_snapshots == region->max_snapshots) {
- err = -ENOMEM;
- goto unlock;
- }
-
- if (devlink_region_snapshot_get_by_id(region, snapshot_id)) {
- err = -EEXIST;
- goto unlock;
- }
-
- snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL);
- if (!snapshot) {
- err = -ENOMEM;
- goto unlock;
- }
-
- snapshot->id = snapshot_id;
- snapshot->region = region;
- snapshot->data = data;
- snapshot->data_len = data_len;
- snapshot->data_destructor = data_destructor;
-
- list_add_tail(&snapshot->list, ®ion->snapshot_list);
-
- region->cur_snapshots++;
-
- devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW);
+ err = __devlink_region_snapshot_create(region, data, snapshot_id);
mutex_unlock(&devlink->lock);
- return 0;
-unlock:
- mutex_unlock(&devlink->lock);
return err;
}
EXPORT_SYMBOL_GPL(devlink_region_snapshot_create);
-static int __init devlink_module_init(void)
+#define DEVLINK_TRAP(_id, _type) \
+ { \
+ .type = DEVLINK_TRAP_TYPE_##_type, \
+ .id = DEVLINK_TRAP_GENERIC_ID_##_id, \
+ .name = DEVLINK_TRAP_GENERIC_NAME_##_id, \
+ }
+
+static const struct devlink_trap devlink_trap_generic[] = {
+ DEVLINK_TRAP(SMAC_MC, DROP),
+ DEVLINK_TRAP(VLAN_TAG_MISMATCH, DROP),
+ DEVLINK_TRAP(INGRESS_VLAN_FILTER, DROP),
+ DEVLINK_TRAP(INGRESS_STP_FILTER, DROP),
+ DEVLINK_TRAP(EMPTY_TX_LIST, DROP),
+ DEVLINK_TRAP(PORT_LOOPBACK_FILTER, DROP),
+ DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
+ DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
+ DEVLINK_TRAP(TAIL_DROP, DROP),
+ DEVLINK_TRAP(NON_IP_PACKET, DROP),
+ DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
+ DEVLINK_TRAP(DIP_LB, DROP),
+ DEVLINK_TRAP(SIP_MC, DROP),
+ DEVLINK_TRAP(SIP_LB, DROP),
+ DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
+ DEVLINK_TRAP(IPV4_SIP_BC, DROP),
+ DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
+ DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
+ DEVLINK_TRAP(MTU_ERROR, EXCEPTION),
+ DEVLINK_TRAP(UNRESOLVED_NEIGH, EXCEPTION),
+ DEVLINK_TRAP(RPF, EXCEPTION),
+ DEVLINK_TRAP(REJECT_ROUTE, EXCEPTION),
+ DEVLINK_TRAP(IPV4_LPM_UNICAST_MISS, EXCEPTION),
+ DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
+ DEVLINK_TRAP(NON_ROUTABLE, DROP),
+ DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
+ DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
+ DEVLINK_TRAP(INGRESS_FLOW_ACTION_DROP, DROP),
+ DEVLINK_TRAP(EGRESS_FLOW_ACTION_DROP, DROP),
+ DEVLINK_TRAP(STP, CONTROL),
+ DEVLINK_TRAP(LACP, CONTROL),
+ DEVLINK_TRAP(LLDP, CONTROL),
+ DEVLINK_TRAP(IGMP_QUERY, CONTROL),
+ DEVLINK_TRAP(IGMP_V1_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V2_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V3_REPORT, CONTROL),
+ DEVLINK_TRAP(IGMP_V2_LEAVE, CONTROL),
+ DEVLINK_TRAP(MLD_QUERY, CONTROL),
+ DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
+ DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
+ DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
+ DEVLINK_TRAP(IPV4_DHCP, CONTROL),
+ DEVLINK_TRAP(IPV6_DHCP, CONTROL),
+ DEVLINK_TRAP(ARP_REQUEST, CONTROL),
+ DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
+ DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
+ DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
+ DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
+ DEVLINK_TRAP(IPV4_BFD, CONTROL),
+ DEVLINK_TRAP(IPV6_BFD, CONTROL),
+ DEVLINK_TRAP(IPV4_OSPF, CONTROL),
+ DEVLINK_TRAP(IPV6_OSPF, CONTROL),
+ DEVLINK_TRAP(IPV4_BGP, CONTROL),
+ DEVLINK_TRAP(IPV6_BGP, CONTROL),
+ DEVLINK_TRAP(IPV4_VRRP, CONTROL),
+ DEVLINK_TRAP(IPV6_VRRP, CONTROL),
+ DEVLINK_TRAP(IPV4_PIM, CONTROL),
+ DEVLINK_TRAP(IPV6_PIM, CONTROL),
+ DEVLINK_TRAP(UC_LB, CONTROL),
+ DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
+ DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
+ DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
+ DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
+ DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
+ DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
+ DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
+ DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
+ DEVLINK_TRAP(PTP_EVENT, CONTROL),
+ DEVLINK_TRAP(PTP_GENERAL, CONTROL),
+ DEVLINK_TRAP(FLOW_ACTION_SAMPLE, CONTROL),
+ DEVLINK_TRAP(FLOW_ACTION_TRAP, CONTROL),
+ DEVLINK_TRAP(EARLY_DROP, DROP),
+ DEVLINK_TRAP(VXLAN_PARSING, DROP),
+ DEVLINK_TRAP(LLC_SNAP_PARSING, DROP),
+ DEVLINK_TRAP(VLAN_PARSING, DROP),
+ DEVLINK_TRAP(PPPOE_PPP_PARSING, DROP),
+ DEVLINK_TRAP(MPLS_PARSING, DROP),
+ DEVLINK_TRAP(ARP_PARSING, DROP),
+ DEVLINK_TRAP(IP_1_PARSING, DROP),
+ DEVLINK_TRAP(IP_N_PARSING, DROP),
+ DEVLINK_TRAP(GRE_PARSING, DROP),
+ DEVLINK_TRAP(UDP_PARSING, DROP),
+ DEVLINK_TRAP(TCP_PARSING, DROP),
+ DEVLINK_TRAP(IPSEC_PARSING, DROP),
+ DEVLINK_TRAP(SCTP_PARSING, DROP),
+ DEVLINK_TRAP(DCCP_PARSING, DROP),
+ DEVLINK_TRAP(GTP_PARSING, DROP),
+ DEVLINK_TRAP(ESP_PARSING, DROP),
+};
+
+#define DEVLINK_TRAP_GROUP(_id) \
+ { \
+ .id = DEVLINK_TRAP_GROUP_GENERIC_ID_##_id, \
+ .name = DEVLINK_TRAP_GROUP_GENERIC_NAME_##_id, \
+ }
+
+static const struct devlink_trap_group devlink_trap_group_generic[] = {
+ DEVLINK_TRAP_GROUP(L2_DROPS),
+ DEVLINK_TRAP_GROUP(L3_DROPS),
+ DEVLINK_TRAP_GROUP(L3_EXCEPTIONS),
+ DEVLINK_TRAP_GROUP(BUFFER_DROPS),
+ DEVLINK_TRAP_GROUP(TUNNEL_DROPS),
+ DEVLINK_TRAP_GROUP(ACL_DROPS),
+ DEVLINK_TRAP_GROUP(STP),
+ DEVLINK_TRAP_GROUP(LACP),
+ DEVLINK_TRAP_GROUP(LLDP),
+ DEVLINK_TRAP_GROUP(MC_SNOOPING),
+ DEVLINK_TRAP_GROUP(DHCP),
+ DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
+ DEVLINK_TRAP_GROUP(BFD),
+ DEVLINK_TRAP_GROUP(OSPF),
+ DEVLINK_TRAP_GROUP(BGP),
+ DEVLINK_TRAP_GROUP(VRRP),
+ DEVLINK_TRAP_GROUP(PIM),
+ DEVLINK_TRAP_GROUP(UC_LB),
+ DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
+ DEVLINK_TRAP_GROUP(EXTERNAL_DELIVERY),
+ DEVLINK_TRAP_GROUP(IPV6),
+ DEVLINK_TRAP_GROUP(PTP_EVENT),
+ DEVLINK_TRAP_GROUP(PTP_GENERAL),
+ DEVLINK_TRAP_GROUP(ACL_SAMPLE),
+ DEVLINK_TRAP_GROUP(ACL_TRAP),
+ DEVLINK_TRAP_GROUP(PARSER_ERROR_DROPS),
+};
+
+static int devlink_trap_generic_verify(const struct devlink_trap *trap)
{
- return genl_register_family(&devlink_nl_family);
+ if (trap->id > DEVLINK_TRAP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ if (strcmp(trap->name, devlink_trap_generic[trap->id].name))
+ return -EINVAL;
+
+ if (trap->type != devlink_trap_generic[trap->id].type)
+ return -EINVAL;
+
+ return 0;
}
-static void __exit devlink_module_exit(void)
+static int devlink_trap_driver_verify(const struct devlink_trap *trap)
{
- genl_unregister_family(&devlink_nl_family);
+ int i;
+
+ if (trap->id <= DEVLINK_TRAP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_trap_generic); i++) {
+ if (!strcmp(trap->name, devlink_trap_generic[i].name))
+ return -EEXIST;
+ }
+
+ return 0;
}
-module_init(devlink_module_init);
-module_exit(devlink_module_exit);
+static int devlink_trap_verify(const struct devlink_trap *trap)
+{
+ if (!trap || !trap->name)
+ return -EINVAL;
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
-MODULE_DESCRIPTION("Network physical device Netlink interface");
-MODULE_ALIAS_GENL_FAMILY(DEVLINK_GENL_NAME);
+ if (trap->generic)
+ return devlink_trap_generic_verify(trap);
+ else
+ return devlink_trap_driver_verify(trap);
+}
+
+static int
+devlink_trap_group_generic_verify(const struct devlink_trap_group *group)
+{
+ if (group->id > DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ if (strcmp(group->name, devlink_trap_group_generic[group->id].name))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int
+devlink_trap_group_driver_verify(const struct devlink_trap_group *group)
+{
+ int i;
+
+ if (group->id <= DEVLINK_TRAP_GROUP_GENERIC_ID_MAX)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(devlink_trap_group_generic); i++) {
+ if (!strcmp(group->name, devlink_trap_group_generic[i].name))
+ return -EEXIST;
+ }
+
+ return 0;
+}
+
+static int devlink_trap_group_verify(const struct devlink_trap_group *group)
+{
+ if (group->generic)
+ return devlink_trap_group_generic_verify(group);
+ else
+ return devlink_trap_group_driver_verify(group);
+}
+
+static void
+devlink_trap_group_notify(struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
+ cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_group_fill(msg, devlink, group_item, cmd, 0, 0,
+ 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_item_group_link(struct devlink *devlink,
+ struct devlink_trap_item *trap_item)
+{
+ u16 group_id = trap_item->trap->init_group_id;
+ struct devlink_trap_group_item *group_item;
+
+ group_item = devlink_trap_group_item_lookup_by_id(devlink, group_id);
+ if (WARN_ON_ONCE(!group_item))
+ return -EINVAL;
+
+ trap_item->group_item = group_item;
+
+ return 0;
+}
+
+static void devlink_trap_notify(struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
+ cmd != DEVLINK_CMD_TRAP_DEL);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_fill(msg, devlink, trap_item, cmd, 0, 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_register(struct devlink *devlink,
+ const struct devlink_trap *trap, void *priv)
+{
+ struct devlink_trap_item *trap_item;
+ int err;
+
+ if (devlink_trap_item_lookup(devlink, trap->name))
+ return -EEXIST;
+
+ trap_item = kzalloc(sizeof(*trap_item), GFP_KERNEL);
+ if (!trap_item)
+ return -ENOMEM;
+
+ trap_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
+ if (!trap_item->stats) {
+ err = -ENOMEM;
+ goto err_stats_alloc;
+ }
+
+ trap_item->trap = trap;
+ trap_item->action = trap->init_action;
+ trap_item->priv = priv;
+
+ err = devlink_trap_item_group_link(devlink, trap_item);
+ if (err)
+ goto err_group_link;
+
+ err = devlink->ops->trap_init(devlink, trap, trap_item);
+ if (err)
+ goto err_trap_init;
+
+ list_add_tail(&trap_item->list, &devlink->trap_list);
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
+
+ return 0;
+
+err_trap_init:
+err_group_link:
+ free_percpu(trap_item->stats);
+err_stats_alloc:
+ kfree(trap_item);
+ return err;
+}
+
+static void devlink_trap_unregister(struct devlink *devlink,
+ const struct devlink_trap *trap)
+{
+ struct devlink_trap_item *trap_item;
+
+ trap_item = devlink_trap_item_lookup(devlink, trap->name);
+ if (WARN_ON_ONCE(!trap_item))
+ return;
+
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
+ list_del(&trap_item->list);
+ if (devlink->ops->trap_fini)
+ devlink->ops->trap_fini(devlink, trap, trap_item);
+ free_percpu(trap_item->stats);
+ kfree(trap_item);
+}
+
+static void devlink_trap_disable(struct devlink *devlink,
+ const struct devlink_trap *trap)
+{
+ struct devlink_trap_item *trap_item;
+
+ trap_item = devlink_trap_item_lookup(devlink, trap->name);
+ if (WARN_ON_ONCE(!trap_item))
+ return;
+
+ devlink->ops->trap_action_set(devlink, trap, DEVLINK_TRAP_ACTION_DROP,
+ NULL);
+ trap_item->action = DEVLINK_TRAP_ACTION_DROP;
+}
+
+/**
+ * devlink_traps_register - Register packet traps with devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ * @priv: Driver private information.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devlink_traps_register(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count, void *priv)
+{
+ int i, err;
+
+ if (!devlink->ops->trap_init || !devlink->ops->trap_action_set)
+ return -EINVAL;
+
+ mutex_lock(&devlink->lock);
+ for (i = 0; i < traps_count; i++) {
+ const struct devlink_trap *trap = &traps[i];
+
+ err = devlink_trap_verify(trap);
+ if (err)
+ goto err_trap_verify;
+
+ err = devlink_trap_register(devlink, trap, priv);
+ if (err)
+ goto err_trap_register;
+ }
+ mutex_unlock(&devlink->lock);
+
+ return 0;
+
+err_trap_register:
+err_trap_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_unregister(devlink, &traps[i]);
+ mutex_unlock(&devlink->lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_traps_register);
+
+/**
+ * devlink_traps_unregister - Unregister packet traps from devlink.
+ * @devlink: devlink.
+ * @traps: Packet traps.
+ * @traps_count: Count of provided packet traps.
+ */
+void devlink_traps_unregister(struct devlink *devlink,
+ const struct devlink_trap *traps,
+ size_t traps_count)
+{
+ int i;
+
+ mutex_lock(&devlink->lock);
+ /* Make sure we do not have any packets in-flight while unregistering
+ * traps by disabling all of them and waiting for a grace period.
+ */
+ for (i = traps_count - 1; i >= 0; i--)
+ devlink_trap_disable(devlink, &traps[i]);
+ synchronize_rcu();
+ for (i = traps_count - 1; i >= 0; i--)
+ devlink_trap_unregister(devlink, &traps[i]);
+ mutex_unlock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devlink_traps_unregister);
+
+static void
+devlink_trap_stats_update(struct devlink_stats __percpu *trap_stats,
+ size_t skb_len)
+{
+ struct devlink_stats *stats;
+
+ stats = this_cpu_ptr(trap_stats);
+ u64_stats_update_begin(&stats->syncp);
+ stats->rx_bytes += skb_len;
+ stats->rx_packets++;
+ u64_stats_update_end(&stats->syncp);
+}
+
+static void
+devlink_trap_report_metadata_set(struct devlink_trap_metadata *metadata,
+ const struct devlink_trap_item *trap_item,
+ struct devlink_port *in_devlink_port,
+ const struct flow_action_cookie *fa_cookie)
+{
+ metadata->trap_name = trap_item->trap->name;
+ metadata->trap_group_name = trap_item->group_item->group->name;
+ metadata->fa_cookie = fa_cookie;
+ metadata->trap_type = trap_item->trap->type;
+
+ spin_lock(&in_devlink_port->type_lock);
+ if (in_devlink_port->type == DEVLINK_PORT_TYPE_ETH)
+ metadata->input_dev = in_devlink_port->type_dev;
+ spin_unlock(&in_devlink_port->type_lock);
+}
+
+/**
+ * devlink_trap_report - Report trapped packet to drop monitor.
+ * @devlink: devlink.
+ * @skb: Trapped packet.
+ * @trap_ctx: Trap context.
+ * @in_devlink_port: Input devlink port.
+ * @fa_cookie: Flow action cookie. Could be NULL.
+ */
+void devlink_trap_report(struct devlink *devlink, struct sk_buff *skb,
+ void *trap_ctx, struct devlink_port *in_devlink_port,
+ const struct flow_action_cookie *fa_cookie)
+
+{
+ struct devlink_trap_item *trap_item = trap_ctx;
+
+ devlink_trap_stats_update(trap_item->stats, skb->len);
+ devlink_trap_stats_update(trap_item->group_item->stats, skb->len);
+
+ if (trace_devlink_trap_report_enabled()) {
+ struct devlink_trap_metadata metadata = {};
+
+ devlink_trap_report_metadata_set(&metadata, trap_item,
+ in_devlink_port, fa_cookie);
+ trace_devlink_trap_report(devlink, skb, &metadata);
+ }
+}
+EXPORT_SYMBOL_GPL(devlink_trap_report);
+
+/**
+ * devlink_trap_ctx_priv - Trap context to driver private information.
+ * @trap_ctx: Trap context.
+ *
+ * Return: Driver private information passed during registration.
+ */
+void *devlink_trap_ctx_priv(void *trap_ctx)
+{
+ struct devlink_trap_item *trap_item = trap_ctx;
+
+ return trap_item->priv;
+}
+EXPORT_SYMBOL_GPL(devlink_trap_ctx_priv);
+
+static int
+devlink_trap_group_item_policer_link(struct devlink *devlink,
+ struct devlink_trap_group_item *group_item)
+{
+ u32 policer_id = group_item->group->init_policer_id;
+ struct devlink_trap_policer_item *policer_item;
+
+ if (policer_id == 0)
+ return 0;
+
+ policer_item = devlink_trap_policer_item_lookup(devlink, policer_id);
+ if (WARN_ON_ONCE(!policer_item))
+ return -EINVAL;
+
+ group_item->policer_item = policer_item;
+
+ return 0;
+}
+
+static int
+devlink_trap_group_register(struct devlink *devlink,
+ const struct devlink_trap_group *group)
+{
+ struct devlink_trap_group_item *group_item;
+ int err;
+
+ if (devlink_trap_group_item_lookup(devlink, group->name))
+ return -EEXIST;
+
+ group_item = kzalloc(sizeof(*group_item), GFP_KERNEL);
+ if (!group_item)
+ return -ENOMEM;
+
+ group_item->stats = netdev_alloc_pcpu_stats(struct devlink_stats);
+ if (!group_item->stats) {
+ err = -ENOMEM;
+ goto err_stats_alloc;
+ }
+
+ group_item->group = group;
+
+ err = devlink_trap_group_item_policer_link(devlink, group_item);
+ if (err)
+ goto err_policer_link;
+
+ if (devlink->ops->trap_group_init) {
+ err = devlink->ops->trap_group_init(devlink, group);
+ if (err)
+ goto err_group_init;
+ }
+
+ list_add_tail(&group_item->list, &devlink->trap_group_list);
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW);
+
+ return 0;
+
+err_group_init:
+err_policer_link:
+ free_percpu(group_item->stats);
+err_stats_alloc:
+ kfree(group_item);
+ return err;
+}
+
+static void
+devlink_trap_group_unregister(struct devlink *devlink,
+ const struct devlink_trap_group *group)
+{
+ struct devlink_trap_group_item *group_item;
+
+ group_item = devlink_trap_group_item_lookup(devlink, group->name);
+ if (WARN_ON_ONCE(!group_item))
+ return;
+
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_DEL);
+ list_del(&group_item->list);
+ free_percpu(group_item->stats);
+ kfree(group_item);
+}
+
+/**
+ * devlink_trap_groups_register - Register packet trap groups with devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ *
+ * Return: Non-zero value on failure.
+ */
+int devlink_trap_groups_register(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ int i, err;
+
+ mutex_lock(&devlink->lock);
+ for (i = 0; i < groups_count; i++) {
+ const struct devlink_trap_group *group = &groups[i];
+
+ err = devlink_trap_group_verify(group);
+ if (err)
+ goto err_trap_group_verify;
+
+ err = devlink_trap_group_register(devlink, group);
+ if (err)
+ goto err_trap_group_register;
+ }
+ mutex_unlock(&devlink->lock);
+
+ return 0;
+
+err_trap_group_register:
+err_trap_group_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_group_unregister(devlink, &groups[i]);
+ mutex_unlock(&devlink->lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_trap_groups_register);
+
+/**
+ * devlink_trap_groups_unregister - Unregister packet trap groups from devlink.
+ * @devlink: devlink.
+ * @groups: Packet trap groups.
+ * @groups_count: Count of provided packet trap groups.
+ */
+void devlink_trap_groups_unregister(struct devlink *devlink,
+ const struct devlink_trap_group *groups,
+ size_t groups_count)
+{
+ int i;
+
+ mutex_lock(&devlink->lock);
+ for (i = groups_count - 1; i >= 0; i--)
+ devlink_trap_group_unregister(devlink, &groups[i]);
+ mutex_unlock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devlink_trap_groups_unregister);
+
+static void
+devlink_trap_policer_notify(struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd)
+{
+ struct sk_buff *msg;
+ int err;
+
+ WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
+ cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ err = devlink_nl_trap_policer_fill(msg, devlink, policer_item, cmd, 0,
+ 0, 0);
+ if (err) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
+ msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+}
+
+static int
+devlink_trap_policer_register(struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct devlink_trap_policer_item *policer_item;
+ int err;
+
+ if (devlink_trap_policer_item_lookup(devlink, policer->id))
+ return -EEXIST;
+
+ policer_item = kzalloc(sizeof(*policer_item), GFP_KERNEL);
+ if (!policer_item)
+ return -ENOMEM;
+
+ policer_item->policer = policer;
+ policer_item->rate = policer->init_rate;
+ policer_item->burst = policer->init_burst;
+
+ if (devlink->ops->trap_policer_init) {
+ err = devlink->ops->trap_policer_init(devlink, policer);
+ if (err)
+ goto err_policer_init;
+ }
+
+ list_add_tail(&policer_item->list, &devlink->trap_policer_list);
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW);
+
+ return 0;
+
+err_policer_init:
+ kfree(policer_item);
+ return err;
+}
+
+static void
+devlink_trap_policer_unregister(struct devlink *devlink,
+ const struct devlink_trap_policer *policer)
+{
+ struct devlink_trap_policer_item *policer_item;
+
+ policer_item = devlink_trap_policer_item_lookup(devlink, policer->id);
+ if (WARN_ON_ONCE(!policer_item))
+ return;
+
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_DEL);
+ list_del(&policer_item->list);
+ if (devlink->ops->trap_policer_fini)
+ devlink->ops->trap_policer_fini(devlink, policer);
+ kfree(policer_item);
+}
+
+/**
+ * devlink_trap_policers_register - Register packet trap policers with devlink.
+ * @devlink: devlink.
+ * @policers: Packet trap policers.
+ * @policers_count: Count of provided packet trap policers.
+ *
+ * Return: Non-zero value on failure.
+ */
+int
+devlink_trap_policers_register(struct devlink *devlink,
+ const struct devlink_trap_policer *policers,
+ size_t policers_count)
+{
+ int i, err;
+
+ mutex_lock(&devlink->lock);
+ for (i = 0; i < policers_count; i++) {
+ const struct devlink_trap_policer *policer = &policers[i];
+
+ if (WARN_ON(policer->id == 0 ||
+ policer->max_rate < policer->min_rate ||
+ policer->max_burst < policer->min_burst)) {
+ err = -EINVAL;
+ goto err_trap_policer_verify;
+ }
+
+ err = devlink_trap_policer_register(devlink, policer);
+ if (err)
+ goto err_trap_policer_register;
+ }
+ mutex_unlock(&devlink->lock);
+
+ return 0;
+
+err_trap_policer_register:
+err_trap_policer_verify:
+ for (i--; i >= 0; i--)
+ devlink_trap_policer_unregister(devlink, &policers[i]);
+ mutex_unlock(&devlink->lock);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_trap_policers_register);
+
+/**
+ * devlink_trap_policers_unregister - Unregister packet trap policers from devlink.
+ * @devlink: devlink.
+ * @policers: Packet trap policers.
+ * @policers_count: Count of provided packet trap policers.
+ */
+void
+devlink_trap_policers_unregister(struct devlink *devlink,
+ const struct devlink_trap_policer *policers,
+ size_t policers_count)
+{
+ int i;
+
+ mutex_lock(&devlink->lock);
+ for (i = policers_count - 1; i >= 0; i--)
+ devlink_trap_policer_unregister(devlink, &policers[i]);
+ mutex_unlock(&devlink->lock);
+}
+EXPORT_SYMBOL_GPL(devlink_trap_policers_unregister);
+
+static void __devlink_compat_running_version(struct devlink *devlink,
+ char *buf, size_t len)
+{
+ const struct nlattr *nlattr;
+ struct devlink_info_req req;
+ struct sk_buff *msg;
+ int rem, err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ req.msg = msg;
+ err = devlink->ops->info_get(devlink, &req, NULL);
+ if (err)
+ goto free_msg;
+
+ nla_for_each_attr(nlattr, (void *)msg->data, msg->len, rem) {
+ const struct nlattr *kv;
+ int rem_kv;
+
+ if (nla_type(nlattr) != DEVLINK_ATTR_INFO_VERSION_RUNNING)
+ continue;
+
+ nla_for_each_nested(kv, nlattr, rem_kv) {
+ if (nla_type(kv) != DEVLINK_ATTR_INFO_VERSION_VALUE)
+ continue;
+
+ strlcat(buf, nla_data(kv), len);
+ strlcat(buf, " ", len);
+ }
+ }
+free_msg:
+ nlmsg_free(msg);
+}
+
+void devlink_compat_running_version(struct net_device *dev,
+ char *buf, size_t len)
+{
+ struct devlink *devlink;
+
+ dev_hold(dev);
+ rtnl_unlock();
+
+ devlink = netdev_to_devlink(dev);
+ if (!devlink || !devlink->ops->info_get)
+ goto out;
+
+ mutex_lock(&devlink->lock);
+ __devlink_compat_running_version(devlink, buf, len);
+ mutex_unlock(&devlink->lock);
+
+out:
+ rtnl_lock();
+ dev_put(dev);
+}
+
+int devlink_compat_flash_update(struct net_device *dev, const char *file_name)
+{
+ struct devlink_flash_update_params params = {};
+ struct devlink *devlink;
+ int ret;
+
+ dev_hold(dev);
+ rtnl_unlock();
+
+ devlink = netdev_to_devlink(dev);
+ if (!devlink || !devlink->ops->flash_update) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ params.file_name = file_name;
+
+ mutex_lock(&devlink->lock);
+ ret = devlink->ops->flash_update(devlink, ¶ms, NULL);
+ mutex_unlock(&devlink->lock);
+
+out:
+ rtnl_lock();
+ dev_put(dev);
+
+ return ret;
+}
+
+int devlink_compat_phys_port_name_get(struct net_device *dev,
+ char *name, size_t len)
+{
+ struct devlink_port *devlink_port;
+
+ /* RTNL mutex is held here which ensures that devlink_port
+ * instance cannot disappear in the middle. No need to take
+ * any devlink lock as only permanent values are accessed.
+ */
+ ASSERT_RTNL();
+
+ devlink_port = netdev_to_devlink_port(dev);
+ if (!devlink_port)
+ return -EOPNOTSUPP;
+
+ return __devlink_port_phys_port_name_get(devlink_port, name, len);
+}
+
+int devlink_compat_switch_id_get(struct net_device *dev,
+ struct netdev_phys_item_id *ppid)
+{
+ struct devlink_port *devlink_port;
+
+ /* Caller must hold RTNL mutex or reference to dev, which ensures that
+ * devlink_port instance cannot disappear in the middle. No need to take
+ * any devlink lock as only permanent values are accessed.
+ */
+ devlink_port = netdev_to_devlink_port(dev);
+ if (!devlink_port || !devlink_port->switch_port)
+ return -EOPNOTSUPP;
+
+ memcpy(ppid, &devlink_port->attrs.switch_id, sizeof(*ppid));
+
+ return 0;
+}
+
+static void __net_exit devlink_pernet_pre_exit(struct net *net)
+{
+ struct devlink *devlink;
+ u32 actions_performed;
+ int err;
+
+ /* In case network namespace is getting destroyed, reload
+ * all devlink instances from this namespace into init_net.
+ */
+ mutex_lock(&devlink_mutex);
+ list_for_each_entry(devlink, &devlink_list, list) {
+ if (net_eq(devlink_net(devlink), net)) {
+ if (WARN_ON(!devlink_reload_supported(devlink->ops)))
+ continue;
+ err = devlink_reload(devlink, &init_net,
+ DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
+ DEVLINK_RELOAD_LIMIT_UNSPEC,
+ &actions_performed, NULL);
+ if (err && err != -EOPNOTSUPP)
+ pr_warn("Failed to reload devlink instance into init_net\n");
+ }
+ }
+ mutex_unlock(&devlink_mutex);
+}
+
+static struct pernet_operations devlink_pernet_ops __net_initdata = {
+ .pre_exit = devlink_pernet_pre_exit,
+};
+
+static int __init devlink_init(void)
+{
+ int err;
+
+ err = genl_register_family(&devlink_nl_family);
+ if (err)
+ goto out;
+ err = register_pernet_subsys(&devlink_pernet_ops);
+
+out:
+ WARN_ON(err);
+ return err;
+}
+
+subsys_initcall(devlink_init);
--
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