From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/net/bridge/br_vlan.c | 1085 +++++++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 985 insertions(+), 100 deletions(-)
diff --git a/kernel/net/bridge/br_vlan.c b/kernel/net/bridge/br_vlan.c
index a82d002..1dc5db0 100644
--- a/kernel/net/bridge/br_vlan.c
+++ b/kernel/net/bridge/br_vlan.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/rtnetlink.h>
@@ -6,6 +7,8 @@
#include "br_private.h"
#include "br_private_tunnel.h"
+
+static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid);
static inline int br_vlan_cmp(struct rhashtable_compare_arg *arg,
const void *ptr)
@@ -21,7 +24,6 @@
.key_offset = offsetof(struct net_bridge_vlan, vid),
.key_len = sizeof(u16),
.nelem_hint = 3,
- .locks_mul = 1,
.max_size = VLAN_N_VID,
.obj_cmpfn = br_vlan_cmp,
.automatic_shrinking = true,
@@ -32,13 +34,15 @@
return rhashtable_lookup_fast(tbl, &vid, br_vlan_rht_params);
}
-static bool __vlan_add_pvid(struct net_bridge_vlan_group *vg, u16 vid)
+static bool __vlan_add_pvid(struct net_bridge_vlan_group *vg,
+ const struct net_bridge_vlan *v)
{
- if (vg->pvid == vid)
+ if (vg->pvid == v->vid)
return false;
smp_wmb();
- vg->pvid = vid;
+ br_vlan_set_pvid_state(vg, v->state);
+ vg->pvid = v->vid;
return true;
}
@@ -67,7 +71,7 @@
vg = nbp_vlan_group(v->port);
if (flags & BRIDGE_VLAN_INFO_PVID)
- ret = __vlan_add_pvid(vg, v->vid);
+ ret = __vlan_add_pvid(vg, v);
else
ret = __vlan_delete_pvid(vg, v->vid);
@@ -80,16 +84,18 @@
}
static int __vlan_vid_add(struct net_device *dev, struct net_bridge *br,
- u16 vid, u16 flags)
+ struct net_bridge_vlan *v, u16 flags,
+ struct netlink_ext_ack *extack)
{
int err;
/* Try switchdev op first. In case it is not supported, fallback to
* 8021q add.
*/
- err = br_switchdev_port_vlan_add(dev, vid, flags);
+ err = br_switchdev_port_vlan_add(dev, v->vid, flags, extack);
if (err == -EOPNOTSUPP)
- return vlan_vid_add(dev, br->vlan_proto, vid);
+ return vlan_vid_add(dev, br->vlan_proto, v->vid);
+ v->priv_flags |= BR_VLFLAG_ADDED_BY_SWITCHDEV;
return err;
}
@@ -121,25 +127,25 @@
}
static int __vlan_vid_del(struct net_device *dev, struct net_bridge *br,
- u16 vid)
+ const struct net_bridge_vlan *v)
{
int err;
/* Try switchdev op first. In case it is not supported, fallback to
* 8021q del.
*/
- err = br_switchdev_port_vlan_del(dev, vid);
- if (err == -EOPNOTSUPP) {
- vlan_vid_del(dev, br->vlan_proto, vid);
- return 0;
- }
- return err;
+ err = br_switchdev_port_vlan_del(dev, v->vid);
+ if (!(v->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV))
+ vlan_vid_del(dev, br->vlan_proto, v->vid);
+ return err == -EOPNOTSUPP ? 0 : err;
}
-/* Returns a master vlan, if it didn't exist it gets created. In all cases a
+/* Returns a master vlan, if it didn't exist it gets created. In all cases
* a reference is taken to the master vlan before returning.
*/
-static struct net_bridge_vlan *br_vlan_get_master(struct net_bridge *br, u16 vid)
+static struct net_bridge_vlan *
+br_vlan_get_master(struct net_bridge *br, u16 vid,
+ struct netlink_ext_ack *extack)
{
struct net_bridge_vlan_group *vg;
struct net_bridge_vlan *masterv;
@@ -150,7 +156,7 @@
bool changed;
/* missing global ctx, create it now */
- if (br_vlan_add(br, vid, 0, &changed))
+ if (br_vlan_add(br, vid, 0, &changed, extack))
return NULL;
masterv = br_vlan_find(vg, vid);
if (WARN_ON(!masterv))
@@ -190,6 +196,19 @@
}
}
+static void nbp_vlan_rcu_free(struct rcu_head *rcu)
+{
+ struct net_bridge_vlan *v;
+
+ v = container_of(rcu, struct net_bridge_vlan, rcu);
+ WARN_ON(br_vlan_is_master(v));
+ /* if we had per-port stats configured then free them here */
+ if (v->priv_flags & BR_VLFLAG_PER_PORT_STATS)
+ free_percpu(v->stats);
+ v->stats = NULL;
+ kfree(v);
+}
+
/* This is the shared VLAN add function which works for both ports and bridge
* devices. There are four possible calls to this function in terms of the
* vlan entry type:
@@ -201,7 +220,8 @@
* 4. same as 3 but with both master and brentry flags set so the entry
* will be used for filtering in both the port and the bridge
*/
-static int __vlan_add(struct net_bridge_vlan *v, u16 flags)
+static int __vlan_add(struct net_bridge_vlan *v, u16 flags,
+ struct netlink_ext_ack *extack)
{
struct net_bridge_vlan *masterv = NULL;
struct net_bridge_port *p = NULL;
@@ -226,7 +246,7 @@
* This ensures tagged traffic enters the bridge when
* promiscuous mode is disabled by br_manage_promisc().
*/
- err = __vlan_vid_add(dev, br, v->vid, flags);
+ err = __vlan_vid_add(dev, br, v, flags, extack);
if (err)
goto out;
@@ -236,20 +256,33 @@
err = br_vlan_add(br, v->vid,
flags | BRIDGE_VLAN_INFO_BRENTRY,
- &changed);
+ &changed, extack);
if (err)
goto out_filt;
+
+ if (changed)
+ br_vlan_notify(br, NULL, v->vid, 0,
+ RTM_NEWVLAN);
}
- masterv = br_vlan_get_master(br, v->vid);
+ masterv = br_vlan_get_master(br, v->vid, extack);
if (!masterv) {
err = -ENOMEM;
goto out_filt;
}
v->brvlan = masterv;
- v->stats = masterv->stats;
+ if (br_opt_get(br, BROPT_VLAN_STATS_PER_PORT)) {
+ v->stats = netdev_alloc_pcpu_stats(struct br_vlan_stats);
+ if (!v->stats) {
+ err = -ENOMEM;
+ goto out_filt;
+ }
+ v->priv_flags |= BR_VLFLAG_PER_PORT_STATS;
+ } else {
+ v->stats = masterv->stats;
+ }
} else {
- err = br_switchdev_port_vlan_add(dev, v->vid, flags);
+ err = br_switchdev_port_vlan_add(dev, v->vid, flags, extack);
if (err && err != -EOPNOTSUPP)
goto out;
}
@@ -264,6 +297,9 @@
vg->num_vlans++;
}
+ /* set the state before publishing */
+ v->state = BR_STATE_FORWARDING;
+
err = rhashtable_lookup_insert_fast(&vg->vlan_hash, &v->vnode,
br_vlan_rht_params);
if (err)
@@ -271,6 +307,9 @@
__vlan_add_list(v);
__vlan_add_flags(v, flags);
+
+ if (p)
+ nbp_vlan_set_vlan_dev_state(p, v->vid);
out:
return err;
@@ -282,8 +321,12 @@
out_filt:
if (p) {
- __vlan_vid_del(dev, br, v->vid);
+ __vlan_vid_del(dev, br, v);
if (masterv) {
+ if (v->stats && masterv->stats != v->stats)
+ free_percpu(v->stats);
+ v->stats = NULL;
+
br_vlan_put_master(masterv);
v->brvlan = NULL;
}
@@ -311,7 +354,7 @@
__vlan_delete_pvid(vg, v->vid);
if (p) {
- err = __vlan_vid_del(p->dev, p->br, v->vid);
+ err = __vlan_vid_del(p->dev, p->br, v);
if (err)
goto out;
} else {
@@ -331,7 +374,8 @@
rhashtable_remove_fast(&vg->vlan_hash, &v->vnode,
br_vlan_rht_params);
__vlan_del_list(v);
- kfree_rcu(v, rcu);
+ nbp_vlan_set_vlan_dev_state(p, v->vid);
+ call_rcu(&v->rcu, nbp_vlan_rcu_free);
}
br_vlan_put_master(masterv);
@@ -347,13 +391,31 @@
kfree(vg);
}
-static void __vlan_flush(struct net_bridge_vlan_group *vg)
+static void __vlan_flush(const struct net_bridge *br,
+ const struct net_bridge_port *p,
+ struct net_bridge_vlan_group *vg)
{
struct net_bridge_vlan *vlan, *tmp;
+ u16 v_start = 0, v_end = 0;
__vlan_delete_pvid(vg, vg->pvid);
- list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist)
+ list_for_each_entry_safe(vlan, tmp, &vg->vlan_list, vlist) {
+ /* take care of disjoint ranges */
+ if (!v_start) {
+ v_start = vlan->vid;
+ } else if (vlan->vid - v_end != 1) {
+ /* found range end, notify and start next one */
+ br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN);
+ v_start = vlan->vid;
+ }
+ v_end = vlan->vid;
+
__vlan_del(vlan);
+ }
+
+ /* notify about the last/whole vlan range */
+ if (v_start)
+ br_vlan_notify(br, p, v_start, v_end, RTM_DELVLAN);
}
struct sk_buff *br_handle_vlan(struct net_bridge *br,
@@ -388,7 +450,7 @@
return NULL;
}
}
- if (br->vlan_stats_enabled) {
+ if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) {
stats = this_cpu_ptr(v->stats);
u64_stats_update_begin(&stats->syncp);
stats->tx_bytes += skb->len;
@@ -397,7 +459,7 @@
}
if (v->flags & BRIDGE_VLAN_INFO_UNTAGGED)
- skb->vlan_tci = 0;
+ __vlan_hwaccel_clear_tag(skb);
if (p && (p->flags & BR_VLAN_TUNNEL) &&
br_handle_egress_vlan_tunnel(skb, v)) {
@@ -411,7 +473,8 @@
/* Called under RCU */
static bool __allowed_ingress(const struct net_bridge *br,
struct net_bridge_vlan_group *vg,
- struct sk_buff *skb, u16 *vid)
+ struct sk_buff *skb, u16 *vid,
+ u8 *state)
{
struct br_vlan_stats *stats;
struct net_bridge_vlan *v;
@@ -470,21 +533,33 @@
__vlan_hwaccel_put_tag(skb, br->vlan_proto, pvid);
else
/* Priority-tagged Frame.
- * At this point, We know that skb->vlan_tci had
- * VLAN_TAG_PRESENT bit and its VID field was 0x000.
+ * At this point, we know that skb->vlan_tci VID
+ * field was 0.
* We update only VID field and preserve PCP field.
*/
skb->vlan_tci |= pvid;
/* if stats are disabled we can avoid the lookup */
- if (!br->vlan_stats_enabled)
+ if (!br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) {
+ if (*state == BR_STATE_FORWARDING) {
+ *state = br_vlan_get_pvid_state(vg);
+ if (!br_vlan_state_allowed(*state, true))
+ goto drop;
+ }
return true;
+ }
}
v = br_vlan_find(vg, *vid);
if (!v || !br_vlan_should_use(v))
goto drop;
- if (br->vlan_stats_enabled) {
+ if (*state == BR_STATE_FORWARDING) {
+ *state = br_vlan_get_state(v);
+ if (!br_vlan_state_allowed(*state, true))
+ goto drop;
+ }
+
+ if (br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) {
stats = this_cpu_ptr(v->stats);
u64_stats_update_begin(&stats->syncp);
stats->rx_bytes += skb->len;
@@ -501,17 +576,17 @@
bool br_allowed_ingress(const struct net_bridge *br,
struct net_bridge_vlan_group *vg, struct sk_buff *skb,
- u16 *vid)
+ u16 *vid, u8 *state)
{
/* If VLAN filtering is disabled on the bridge, all packets are
* permitted.
*/
- if (!br->vlan_enabled) {
+ if (!br_opt_get(br, BROPT_VLAN_ENABLED)) {
BR_INPUT_SKB_CB(skb)->vlan_filtered = false;
return true;
}
- return __allowed_ingress(br, vg, skb, vid);
+ return __allowed_ingress(br, vg, skb, vid, state);
}
/* Called under RCU. */
@@ -527,7 +602,8 @@
br_vlan_get_tag(skb, &vid);
v = br_vlan_find(vg, vid);
- if (v && br_vlan_should_use(v))
+ if (v && br_vlan_should_use(v) &&
+ br_vlan_state_allowed(br_vlan_get_state(v), false))
return true;
return false;
@@ -538,9 +614,10 @@
{
struct net_bridge_vlan_group *vg;
struct net_bridge *br = p->br;
+ struct net_bridge_vlan *v;
/* If filtering was disabled at input, let it pass. */
- if (!br->vlan_enabled)
+ if (!br_opt_get(br, BROPT_VLAN_ENABLED))
return true;
vg = nbp_vlan_group_rcu(p);
@@ -552,13 +629,15 @@
if (!*vid) {
*vid = br_get_pvid(vg);
- if (!*vid)
+ if (!*vid ||
+ !br_vlan_state_allowed(br_vlan_get_pvid_state(vg), true))
return false;
return true;
}
- if (br_vlan_find(vg, *vid))
+ v = br_vlan_find(vg, *vid);
+ if (v && br_vlan_state_allowed(br_vlan_get_state(v), true))
return true;
return false;
@@ -567,11 +646,12 @@
static int br_vlan_add_existing(struct net_bridge *br,
struct net_bridge_vlan_group *vg,
struct net_bridge_vlan *vlan,
- u16 flags, bool *changed)
+ u16 flags, bool *changed,
+ struct netlink_ext_ack *extack)
{
int err;
- err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags);
+ err = br_switchdev_port_vlan_add(br->dev, vlan->vid, flags, extack);
if (err && err != -EOPNOTSUPP)
return err;
@@ -610,7 +690,8 @@
* Must be called with vid in range from 1 to 4094 inclusive.
* changed must be true only if the vlan was created or updated
*/
-int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed)
+int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags, bool *changed,
+ struct netlink_ext_ack *extack)
{
struct net_bridge_vlan_group *vg;
struct net_bridge_vlan *vlan;
@@ -622,7 +703,8 @@
vg = br_vlan_group(br);
vlan = br_vlan_find(vg, vid);
if (vlan)
- return br_vlan_add_existing(br, vg, vlan, flags, changed);
+ return br_vlan_add_existing(br, vg, vlan, flags, changed,
+ extack);
vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
if (!vlan)
@@ -639,7 +721,7 @@
vlan->br = br;
if (flags & BRIDGE_VLAN_INFO_BRENTRY)
refcount_set(&vlan->refcnt, 1);
- ret = __vlan_add(vlan, flags);
+ ret = __vlan_add(vlan, flags, extack);
if (ret) {
free_percpu(vlan->stats);
kfree(vlan);
@@ -679,13 +761,8 @@
ASSERT_RTNL();
- /* delete auto-added default pvid local fdb before flushing vlans
- * otherwise it will be leaked on bridge device init failure
- */
- br_fdb_delete_by_port(br, NULL, 0, 1);
-
vg = br_vlan_group(br);
- __vlan_flush(vg);
+ __vlan_flush(br, NULL, vg);
RCU_INIT_POINTER(br->vlgrp, NULL);
synchronize_rcu();
__vlan_group_free(vg);
@@ -702,11 +779,12 @@
/* Must be protected by RTNL. */
static void recalculate_group_addr(struct net_bridge *br)
{
- if (br->group_addr_set)
+ if (br_opt_get(br, BROPT_GROUP_ADDR_SET))
return;
spin_lock_bh(&br->lock);
- if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q)) {
+ if (!br_opt_get(br, BROPT_VLAN_ENABLED) ||
+ br->vlan_proto == htons(ETH_P_8021Q)) {
/* Bridge Group Address */
br->group_addr[5] = 0x00;
} else { /* vlan_enabled && ETH_P_8021AD */
@@ -719,7 +797,8 @@
/* Must be protected by RTNL. */
void br_recalculate_fwd_mask(struct net_bridge *br)
{
- if (!br->vlan_enabled || br->vlan_proto == htons(ETH_P_8021Q))
+ if (!br_opt_get(br, BROPT_VLAN_ENABLED) ||
+ br->vlan_proto == htons(ETH_P_8021Q))
br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT;
else /* vlan_enabled && ETH_P_8021AD */
br->group_fwd_mask_required = BR_GROUPFWD_8021AD &
@@ -736,14 +815,14 @@
};
int err;
- if (br->vlan_enabled == val)
+ if (br_opt_get(br, BROPT_VLAN_ENABLED) == !!val)
return 0;
err = switchdev_port_attr_set(br->dev, &attr);
if (err && err != -EOPNOTSUPP)
return err;
- br->vlan_enabled = val;
+ br_opt_toggle(br, BROPT_VLAN_ENABLED, !!val);
br_manage_promisc(br);
recalculate_group_addr(br);
br_recalculate_fwd_mask(br);
@@ -760,32 +839,53 @@
{
struct net_bridge *br = netdev_priv(dev);
- return !!br->vlan_enabled;
+ return br_opt_get(br, BROPT_VLAN_ENABLED);
}
EXPORT_SYMBOL_GPL(br_vlan_enabled);
+int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
+{
+ struct net_bridge *br = netdev_priv(dev);
+
+ *p_proto = ntohs(br->vlan_proto);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(br_vlan_get_proto);
+
int __br_vlan_set_proto(struct net_bridge *br, __be16 proto)
{
+ struct switchdev_attr attr = {
+ .orig_dev = br->dev,
+ .id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL,
+ .flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
+ .u.vlan_protocol = ntohs(proto),
+ };
int err = 0;
struct net_bridge_port *p;
struct net_bridge_vlan *vlan;
struct net_bridge_vlan_group *vg;
- __be16 oldproto;
+ __be16 oldproto = br->vlan_proto;
if (br->vlan_proto == proto)
return 0;
+
+ err = switchdev_port_attr_set(br->dev, &attr);
+ if (err && err != -EOPNOTSUPP)
+ return err;
/* Add VLANs for the new proto to the device filter. */
list_for_each_entry(p, &br->port_list, list) {
vg = nbp_vlan_group(p);
list_for_each_entry(vlan, &vg->vlan_list, vlist) {
+ if (vlan->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV)
+ continue;
err = vlan_vid_add(p->dev, proto, vlan->vid);
if (err)
goto err_filt;
}
}
- oldproto = br->vlan_proto;
br->vlan_proto = proto;
recalculate_group_addr(br);
@@ -794,20 +894,32 @@
/* Delete VLANs for the old proto from the device filter. */
list_for_each_entry(p, &br->port_list, list) {
vg = nbp_vlan_group(p);
- list_for_each_entry(vlan, &vg->vlan_list, vlist)
+ list_for_each_entry(vlan, &vg->vlan_list, vlist) {
+ if (vlan->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV)
+ continue;
vlan_vid_del(p->dev, oldproto, vlan->vid);
+ }
}
return 0;
err_filt:
- list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist)
+ attr.u.vlan_protocol = ntohs(oldproto);
+ switchdev_port_attr_set(br->dev, &attr);
+
+ list_for_each_entry_continue_reverse(vlan, &vg->vlan_list, vlist) {
+ if (vlan->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV)
+ continue;
vlan_vid_del(p->dev, proto, vlan->vid);
+ }
list_for_each_entry_continue_reverse(p, &br->port_list, list) {
vg = nbp_vlan_group(p);
- list_for_each_entry(vlan, &vg->vlan_list, vlist)
+ list_for_each_entry(vlan, &vg->vlan_list, vlist) {
+ if (vlan->priv_flags & BR_VLFLAG_ADDED_BY_SWITCHDEV)
+ continue;
vlan_vid_del(p->dev, proto, vlan->vid);
+ }
}
return err;
@@ -826,7 +938,31 @@
switch (val) {
case 0:
case 1:
- br->vlan_stats_enabled = val;
+ br_opt_toggle(br, BROPT_VLAN_STATS_ENABLED, !!val);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int br_vlan_set_stats_per_port(struct net_bridge *br, unsigned long val)
+{
+ struct net_bridge_port *p;
+
+ /* allow to change the option if there are no port vlans configured */
+ list_for_each_entry(p, &br->port_list, list) {
+ struct net_bridge_vlan_group *vg = nbp_vlan_group(p);
+
+ if (vg->num_vlans)
+ return -EBUSY;
+ }
+
+ switch (val) {
+ case 0:
+ case 1:
+ br_opt_toggle(br, BROPT_VLAN_STATS_PER_PORT, !!val);
break;
default:
return -EINVAL;
@@ -858,18 +994,22 @@
/* Disable default_pvid on all ports where it is still
* configured.
*/
- if (vlan_default_pvid(br_vlan_group(br), pvid))
- br_vlan_delete(br, pvid);
+ if (vlan_default_pvid(br_vlan_group(br), pvid)) {
+ if (!br_vlan_delete(br, pvid))
+ br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN);
+ }
list_for_each_entry(p, &br->port_list, list) {
- if (vlan_default_pvid(nbp_vlan_group(p), pvid))
- nbp_vlan_delete(p, pvid);
+ if (vlan_default_pvid(nbp_vlan_group(p), pvid) &&
+ !nbp_vlan_delete(p, pvid))
+ br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN);
}
br->default_pvid = 0;
}
-int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid)
+int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid,
+ struct netlink_ext_ack *extack)
{
const struct net_bridge_vlan *pvent;
struct net_bridge_vlan_group *vg;
@@ -884,8 +1024,7 @@
return 0;
}
- changed = kcalloc(BITS_TO_LONGS(BR_MAX_PORTS), sizeof(unsigned long),
- GFP_KERNEL);
+ changed = bitmap_zalloc(BR_MAX_PORTS, GFP_KERNEL);
if (!changed)
return -ENOMEM;
@@ -902,10 +1041,13 @@
BRIDGE_VLAN_INFO_PVID |
BRIDGE_VLAN_INFO_UNTAGGED |
BRIDGE_VLAN_INFO_BRENTRY,
- &vlchange);
+ &vlchange, extack);
if (err)
goto out;
- br_vlan_delete(br, old_pvid);
+
+ if (br_vlan_delete(br, old_pvid))
+ br_vlan_notify(br, NULL, old_pvid, 0, RTM_DELVLAN);
+ br_vlan_notify(br, NULL, pvid, 0, RTM_NEWVLAN);
set_bit(0, changed);
}
@@ -922,17 +1064,19 @@
err = nbp_vlan_add(p, pvid,
BRIDGE_VLAN_INFO_PVID |
BRIDGE_VLAN_INFO_UNTAGGED,
- &vlchange);
+ &vlchange, extack);
if (err)
goto err_port;
- nbp_vlan_delete(p, old_pvid);
+ if (nbp_vlan_delete(p, old_pvid))
+ br_vlan_notify(br, p, old_pvid, 0, RTM_DELVLAN);
+ br_vlan_notify(p->br, p, pvid, 0, RTM_NEWVLAN);
set_bit(p->port_no, changed);
}
br->default_pvid = pvid;
out:
- kfree(changed);
+ bitmap_free(changed);
return err;
err_port:
@@ -940,22 +1084,28 @@
if (!test_bit(p->port_no, changed))
continue;
- if (old_pvid)
+ if (old_pvid) {
nbp_vlan_add(p, old_pvid,
BRIDGE_VLAN_INFO_PVID |
BRIDGE_VLAN_INFO_UNTAGGED,
- &vlchange);
+ &vlchange, NULL);
+ br_vlan_notify(p->br, p, old_pvid, 0, RTM_NEWVLAN);
+ }
nbp_vlan_delete(p, pvid);
+ br_vlan_notify(br, p, pvid, 0, RTM_DELVLAN);
}
if (test_bit(0, changed)) {
- if (old_pvid)
+ if (old_pvid) {
br_vlan_add(br, old_pvid,
BRIDGE_VLAN_INFO_PVID |
BRIDGE_VLAN_INFO_UNTAGGED |
BRIDGE_VLAN_INFO_BRENTRY,
- &vlchange);
+ &vlchange, NULL);
+ br_vlan_notify(br, NULL, old_pvid, 0, RTM_NEWVLAN);
+ }
br_vlan_delete(br, pvid);
+ br_vlan_notify(br, NULL, pvid, 0, RTM_DELVLAN);
}
goto out;
}
@@ -972,12 +1122,12 @@
goto out;
/* Only allow default pvid change when filtering is disabled */
- if (br->vlan_enabled) {
+ if (br_opt_get(br, BROPT_VLAN_ENABLED)) {
pr_info_once("Please disable vlan filtering to change default_pvid\n");
err = -EPERM;
goto out;
}
- err = __br_vlan_set_default_pvid(br, pvid);
+ err = __br_vlan_set_default_pvid(br, pvid, NULL);
out:
return err;
}
@@ -986,7 +1136,6 @@
{
struct net_bridge_vlan_group *vg;
int ret = -ENOMEM;
- bool changed;
vg = kzalloc(sizeof(*vg), GFP_KERNEL);
if (!vg)
@@ -1001,17 +1150,10 @@
br->vlan_proto = htons(ETH_P_8021Q);
br->default_pvid = 1;
rcu_assign_pointer(br->vlgrp, vg);
- ret = br_vlan_add(br, 1,
- BRIDGE_VLAN_INFO_PVID | BRIDGE_VLAN_INFO_UNTAGGED |
- BRIDGE_VLAN_INFO_BRENTRY, &changed);
- if (ret)
- goto err_vlan_add;
out:
return ret;
-err_vlan_add:
- vlan_tunnel_deinit(vg);
err_tunnel_init:
rhashtable_destroy(&vg->vlan_hash);
err_rhtbl:
@@ -1020,13 +1162,13 @@
goto out;
}
-int nbp_vlan_init(struct net_bridge_port *p)
+int nbp_vlan_init(struct net_bridge_port *p, struct netlink_ext_ack *extack)
{
struct switchdev_attr attr = {
.orig_dev = p->br->dev,
.id = SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
.flags = SWITCHDEV_F_SKIP_EOPNOTSUPP,
- .u.vlan_filtering = p->br->vlan_enabled,
+ .u.vlan_filtering = br_opt_get(p->br, BROPT_VLAN_ENABLED),
};
struct net_bridge_vlan_group *vg;
int ret = -ENOMEM;
@@ -1053,9 +1195,10 @@
ret = nbp_vlan_add(p, p->br->default_pvid,
BRIDGE_VLAN_INFO_PVID |
BRIDGE_VLAN_INFO_UNTAGGED,
- &changed);
+ &changed, extack);
if (ret)
goto err_vlan_add;
+ br_vlan_notify(p->br, p, p->br->default_pvid, 0, RTM_NEWVLAN);
}
out:
return ret;
@@ -1078,7 +1221,7 @@
* changed must be true only if the vlan was created or updated
*/
int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags,
- bool *changed)
+ bool *changed, struct netlink_ext_ack *extack)
{
struct net_bridge_vlan *vlan;
int ret;
@@ -1089,7 +1232,7 @@
vlan = br_vlan_find(nbp_vlan_group(port), vid);
if (vlan) {
/* Pass the flags to the hardware bridge */
- ret = br_switchdev_port_vlan_add(port->dev, vid, flags);
+ ret = br_switchdev_port_vlan_add(port->dev, vid, flags, extack);
if (ret && ret != -EOPNOTSUPP)
return ret;
*changed = __vlan_add_flags(vlan, flags);
@@ -1103,7 +1246,7 @@
vlan->vid = vid;
vlan->port = port;
- ret = __vlan_add(vlan, flags);
+ ret = __vlan_add(vlan, flags, extack);
if (ret)
kfree(vlan);
else
@@ -1137,7 +1280,7 @@
ASSERT_RTNL();
vg = nbp_vlan_group(port);
- __vlan_flush(vg);
+ __vlan_flush(port->br, port, vg);
RCU_INIT_POINTER(port->vlgrp, NULL);
synchronize_rcu();
__vlan_group_free(vg);
@@ -1173,9 +1316,13 @@
int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
{
struct net_bridge_vlan_group *vg;
+ struct net_bridge_port *p;
ASSERT_RTNL();
- if (netif_is_bridge_master(dev))
+ p = br_port_get_check_rtnl(dev);
+ if (p)
+ vg = nbp_vlan_group(p);
+ else if (netif_is_bridge_master(dev))
vg = br_vlan_group(netdev_priv(dev));
else
return -EINVAL;
@@ -1184,6 +1331,24 @@
return 0;
}
EXPORT_SYMBOL_GPL(br_vlan_get_pvid);
+
+int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
+{
+ struct net_bridge_vlan_group *vg;
+ struct net_bridge_port *p;
+
+ p = br_port_get_check_rcu(dev);
+ if (p)
+ vg = nbp_vlan_group_rcu(p);
+ else if (netif_is_bridge_master(dev))
+ vg = br_vlan_group_rcu(netdev_priv(dev));
+ else
+ return -EINVAL;
+
+ *p_pvid = br_get_pvid(vg);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(br_vlan_get_pvid_rcu);
int br_vlan_get_info(const struct net_device *dev, u16 vid,
struct bridge_vlan_info *p_vinfo)
@@ -1207,6 +1372,726 @@
p_vinfo->vid = vid;
p_vinfo->flags = v->flags;
+ if (vid == br_get_pvid(vg))
+ p_vinfo->flags |= BRIDGE_VLAN_INFO_PVID;
return 0;
}
EXPORT_SYMBOL_GPL(br_vlan_get_info);
+
+static int br_vlan_is_bind_vlan_dev(const struct net_device *dev)
+{
+ return is_vlan_dev(dev) &&
+ !!(vlan_dev_priv(dev)->flags & VLAN_FLAG_BRIDGE_BINDING);
+}
+
+static int br_vlan_is_bind_vlan_dev_fn(struct net_device *dev,
+ __always_unused struct netdev_nested_priv *priv)
+{
+ return br_vlan_is_bind_vlan_dev(dev);
+}
+
+static bool br_vlan_has_upper_bind_vlan_dev(struct net_device *dev)
+{
+ int found;
+
+ rcu_read_lock();
+ found = netdev_walk_all_upper_dev_rcu(dev, br_vlan_is_bind_vlan_dev_fn,
+ NULL);
+ rcu_read_unlock();
+
+ return !!found;
+}
+
+struct br_vlan_bind_walk_data {
+ u16 vid;
+ struct net_device *result;
+};
+
+static int br_vlan_match_bind_vlan_dev_fn(struct net_device *dev,
+ struct netdev_nested_priv *priv)
+{
+ struct br_vlan_bind_walk_data *data = priv->data;
+ int found = 0;
+
+ if (br_vlan_is_bind_vlan_dev(dev) &&
+ vlan_dev_priv(dev)->vlan_id == data->vid) {
+ data->result = dev;
+ found = 1;
+ }
+
+ return found;
+}
+
+static struct net_device *
+br_vlan_get_upper_bind_vlan_dev(struct net_device *dev, u16 vid)
+{
+ struct br_vlan_bind_walk_data data = {
+ .vid = vid,
+ };
+ struct netdev_nested_priv priv = {
+ .data = (void *)&data,
+ };
+
+ rcu_read_lock();
+ netdev_walk_all_upper_dev_rcu(dev, br_vlan_match_bind_vlan_dev_fn,
+ &priv);
+ rcu_read_unlock();
+
+ return data.result;
+}
+
+static bool br_vlan_is_dev_up(const struct net_device *dev)
+{
+ return !!(dev->flags & IFF_UP) && netif_oper_up(dev);
+}
+
+static void br_vlan_set_vlan_dev_state(const struct net_bridge *br,
+ struct net_device *vlan_dev)
+{
+ u16 vid = vlan_dev_priv(vlan_dev)->vlan_id;
+ struct net_bridge_vlan_group *vg;
+ struct net_bridge_port *p;
+ bool has_carrier = false;
+
+ if (!netif_carrier_ok(br->dev)) {
+ netif_carrier_off(vlan_dev);
+ return;
+ }
+
+ list_for_each_entry(p, &br->port_list, list) {
+ vg = nbp_vlan_group(p);
+ if (br_vlan_find(vg, vid) && br_vlan_is_dev_up(p->dev)) {
+ has_carrier = true;
+ break;
+ }
+ }
+
+ if (has_carrier)
+ netif_carrier_on(vlan_dev);
+ else
+ netif_carrier_off(vlan_dev);
+}
+
+static void br_vlan_set_all_vlan_dev_state(struct net_bridge_port *p)
+{
+ struct net_bridge_vlan_group *vg = nbp_vlan_group(p);
+ struct net_bridge_vlan *vlan;
+ struct net_device *vlan_dev;
+
+ list_for_each_entry(vlan, &vg->vlan_list, vlist) {
+ vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev,
+ vlan->vid);
+ if (vlan_dev) {
+ if (br_vlan_is_dev_up(p->dev)) {
+ if (netif_carrier_ok(p->br->dev))
+ netif_carrier_on(vlan_dev);
+ } else {
+ br_vlan_set_vlan_dev_state(p->br, vlan_dev);
+ }
+ }
+ }
+}
+
+static void br_vlan_upper_change(struct net_device *dev,
+ struct net_device *upper_dev,
+ bool linking)
+{
+ struct net_bridge *br = netdev_priv(dev);
+
+ if (!br_vlan_is_bind_vlan_dev(upper_dev))
+ return;
+
+ if (linking) {
+ br_vlan_set_vlan_dev_state(br, upper_dev);
+ br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING, true);
+ } else {
+ br_opt_toggle(br, BROPT_VLAN_BRIDGE_BINDING,
+ br_vlan_has_upper_bind_vlan_dev(dev));
+ }
+}
+
+struct br_vlan_link_state_walk_data {
+ struct net_bridge *br;
+};
+
+static int br_vlan_link_state_change_fn(struct net_device *vlan_dev,
+ struct netdev_nested_priv *priv)
+{
+ struct br_vlan_link_state_walk_data *data = priv->data;
+
+ if (br_vlan_is_bind_vlan_dev(vlan_dev))
+ br_vlan_set_vlan_dev_state(data->br, vlan_dev);
+
+ return 0;
+}
+
+static void br_vlan_link_state_change(struct net_device *dev,
+ struct net_bridge *br)
+{
+ struct br_vlan_link_state_walk_data data = {
+ .br = br
+ };
+ struct netdev_nested_priv priv = {
+ .data = (void *)&data,
+ };
+
+ rcu_read_lock();
+ netdev_walk_all_upper_dev_rcu(dev, br_vlan_link_state_change_fn,
+ &priv);
+ rcu_read_unlock();
+}
+
+/* Must be protected by RTNL. */
+static void nbp_vlan_set_vlan_dev_state(struct net_bridge_port *p, u16 vid)
+{
+ struct net_device *vlan_dev;
+
+ if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING))
+ return;
+
+ vlan_dev = br_vlan_get_upper_bind_vlan_dev(p->br->dev, vid);
+ if (vlan_dev)
+ br_vlan_set_vlan_dev_state(p->br, vlan_dev);
+}
+
+/* Must be protected by RTNL. */
+int br_vlan_bridge_event(struct net_device *dev, unsigned long event, void *ptr)
+{
+ struct netdev_notifier_changeupper_info *info;
+ struct net_bridge *br = netdev_priv(dev);
+ int vlcmd = 0, ret = 0;
+ bool changed = false;
+
+ switch (event) {
+ case NETDEV_REGISTER:
+ ret = br_vlan_add(br, br->default_pvid,
+ BRIDGE_VLAN_INFO_PVID |
+ BRIDGE_VLAN_INFO_UNTAGGED |
+ BRIDGE_VLAN_INFO_BRENTRY, &changed, NULL);
+ vlcmd = RTM_NEWVLAN;
+ break;
+ case NETDEV_UNREGISTER:
+ changed = !br_vlan_delete(br, br->default_pvid);
+ vlcmd = RTM_DELVLAN;
+ break;
+ case NETDEV_CHANGEUPPER:
+ info = ptr;
+ br_vlan_upper_change(dev, info->upper_dev, info->linking);
+ break;
+
+ case NETDEV_CHANGE:
+ case NETDEV_UP:
+ if (!br_opt_get(br, BROPT_VLAN_BRIDGE_BINDING))
+ break;
+ br_vlan_link_state_change(dev, br);
+ break;
+ }
+ if (changed)
+ br_vlan_notify(br, NULL, br->default_pvid, 0, vlcmd);
+
+ return ret;
+}
+
+/* Must be protected by RTNL. */
+void br_vlan_port_event(struct net_bridge_port *p, unsigned long event)
+{
+ if (!br_opt_get(p->br, BROPT_VLAN_BRIDGE_BINDING))
+ return;
+
+ switch (event) {
+ case NETDEV_CHANGE:
+ case NETDEV_DOWN:
+ case NETDEV_UP:
+ br_vlan_set_all_vlan_dev_state(p);
+ break;
+ }
+}
+
+static bool br_vlan_stats_fill(struct sk_buff *skb,
+ const struct net_bridge_vlan *v)
+{
+ struct br_vlan_stats stats;
+ struct nlattr *nest;
+
+ nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY_STATS);
+ if (!nest)
+ return false;
+
+ br_vlan_get_stats(v, &stats);
+ if (nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_BYTES, stats.rx_bytes,
+ BRIDGE_VLANDB_STATS_PAD) ||
+ nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_RX_PACKETS,
+ stats.rx_packets, BRIDGE_VLANDB_STATS_PAD) ||
+ nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_BYTES, stats.tx_bytes,
+ BRIDGE_VLANDB_STATS_PAD) ||
+ nla_put_u64_64bit(skb, BRIDGE_VLANDB_STATS_TX_PACKETS,
+ stats.tx_packets, BRIDGE_VLANDB_STATS_PAD))
+ goto out_err;
+
+ nla_nest_end(skb, nest);
+
+ return true;
+
+out_err:
+ nla_nest_cancel(skb, nest);
+ return false;
+}
+
+/* v_opts is used to dump the options which must be equal in the whole range */
+static bool br_vlan_fill_vids(struct sk_buff *skb, u16 vid, u16 vid_range,
+ const struct net_bridge_vlan *v_opts,
+ u16 flags,
+ bool dump_stats)
+{
+ struct bridge_vlan_info info;
+ struct nlattr *nest;
+
+ nest = nla_nest_start(skb, BRIDGE_VLANDB_ENTRY);
+ if (!nest)
+ return false;
+
+ memset(&info, 0, sizeof(info));
+ info.vid = vid;
+ if (flags & BRIDGE_VLAN_INFO_UNTAGGED)
+ info.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
+ if (flags & BRIDGE_VLAN_INFO_PVID)
+ info.flags |= BRIDGE_VLAN_INFO_PVID;
+
+ if (nla_put(skb, BRIDGE_VLANDB_ENTRY_INFO, sizeof(info), &info))
+ goto out_err;
+
+ if (vid_range && vid < vid_range &&
+ !(flags & BRIDGE_VLAN_INFO_PVID) &&
+ nla_put_u16(skb, BRIDGE_VLANDB_ENTRY_RANGE, vid_range))
+ goto out_err;
+
+ if (v_opts) {
+ if (!br_vlan_opts_fill(skb, v_opts))
+ goto out_err;
+
+ if (dump_stats && !br_vlan_stats_fill(skb, v_opts))
+ goto out_err;
+ }
+
+ nla_nest_end(skb, nest);
+
+ return true;
+
+out_err:
+ nla_nest_cancel(skb, nest);
+ return false;
+}
+
+static size_t rtnl_vlan_nlmsg_size(void)
+{
+ return NLMSG_ALIGN(sizeof(struct br_vlan_msg))
+ + nla_total_size(0) /* BRIDGE_VLANDB_ENTRY */
+ + nla_total_size(sizeof(u16)) /* BRIDGE_VLANDB_ENTRY_RANGE */
+ + nla_total_size(sizeof(struct bridge_vlan_info)) /* BRIDGE_VLANDB_ENTRY_INFO */
+ + br_vlan_opts_nl_size(); /* bridge vlan options */
+}
+
+void br_vlan_notify(const struct net_bridge *br,
+ const struct net_bridge_port *p,
+ u16 vid, u16 vid_range,
+ int cmd)
+{
+ struct net_bridge_vlan_group *vg;
+ struct net_bridge_vlan *v = NULL;
+ struct br_vlan_msg *bvm;
+ struct nlmsghdr *nlh;
+ struct sk_buff *skb;
+ int err = -ENOBUFS;
+ struct net *net;
+ u16 flags = 0;
+ int ifindex;
+
+ /* right now notifications are done only with rtnl held */
+ ASSERT_RTNL();
+
+ if (p) {
+ ifindex = p->dev->ifindex;
+ vg = nbp_vlan_group(p);
+ net = dev_net(p->dev);
+ } else {
+ ifindex = br->dev->ifindex;
+ vg = br_vlan_group(br);
+ net = dev_net(br->dev);
+ }
+
+ skb = nlmsg_new(rtnl_vlan_nlmsg_size(), GFP_KERNEL);
+ if (!skb)
+ goto out_err;
+
+ err = -EMSGSIZE;
+ nlh = nlmsg_put(skb, 0, 0, cmd, sizeof(*bvm), 0);
+ if (!nlh)
+ goto out_err;
+ bvm = nlmsg_data(nlh);
+ memset(bvm, 0, sizeof(*bvm));
+ bvm->family = AF_BRIDGE;
+ bvm->ifindex = ifindex;
+
+ switch (cmd) {
+ case RTM_NEWVLAN:
+ /* need to find the vlan due to flags/options */
+ v = br_vlan_find(vg, vid);
+ if (!v || !br_vlan_should_use(v))
+ goto out_kfree;
+
+ flags = v->flags;
+ if (br_get_pvid(vg) == v->vid)
+ flags |= BRIDGE_VLAN_INFO_PVID;
+ break;
+ case RTM_DELVLAN:
+ break;
+ default:
+ goto out_kfree;
+ }
+
+ if (!br_vlan_fill_vids(skb, vid, vid_range, v, flags, false))
+ goto out_err;
+
+ nlmsg_end(skb, nlh);
+ rtnl_notify(skb, net, 0, RTNLGRP_BRVLAN, NULL, GFP_KERNEL);
+ return;
+
+out_err:
+ rtnl_set_sk_err(net, RTNLGRP_BRVLAN, err);
+out_kfree:
+ kfree_skb(skb);
+}
+
+/* check if v_curr can enter a range ending in range_end */
+bool br_vlan_can_enter_range(const struct net_bridge_vlan *v_curr,
+ const struct net_bridge_vlan *range_end)
+{
+ return v_curr->vid - range_end->vid == 1 &&
+ range_end->flags == v_curr->flags &&
+ br_vlan_opts_eq_range(v_curr, range_end);
+}
+
+static int br_vlan_dump_dev(const struct net_device *dev,
+ struct sk_buff *skb,
+ struct netlink_callback *cb,
+ u32 dump_flags)
+{
+ struct net_bridge_vlan *v, *range_start = NULL, *range_end = NULL;
+ bool dump_stats = !!(dump_flags & BRIDGE_VLANDB_DUMPF_STATS);
+ struct net_bridge_vlan_group *vg;
+ int idx = 0, s_idx = cb->args[1];
+ struct nlmsghdr *nlh = NULL;
+ struct net_bridge_port *p;
+ struct br_vlan_msg *bvm;
+ struct net_bridge *br;
+ int err = 0;
+ u16 pvid;
+
+ if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev))
+ return -EINVAL;
+
+ if (netif_is_bridge_master(dev)) {
+ br = netdev_priv(dev);
+ vg = br_vlan_group_rcu(br);
+ p = NULL;
+ } else {
+ p = br_port_get_rcu(dev);
+ if (WARN_ON(!p))
+ return -EINVAL;
+ vg = nbp_vlan_group_rcu(p);
+ br = p->br;
+ }
+
+ if (!vg)
+ return 0;
+
+ nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+ RTM_NEWVLAN, sizeof(*bvm), NLM_F_MULTI);
+ if (!nlh)
+ return -EMSGSIZE;
+ bvm = nlmsg_data(nlh);
+ memset(bvm, 0, sizeof(*bvm));
+ bvm->family = PF_BRIDGE;
+ bvm->ifindex = dev->ifindex;
+ pvid = br_get_pvid(vg);
+
+ /* idx must stay at range's beginning until it is filled in */
+ list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
+ if (!br_vlan_should_use(v))
+ continue;
+ if (idx < s_idx) {
+ idx++;
+ continue;
+ }
+
+ if (!range_start) {
+ range_start = v;
+ range_end = v;
+ continue;
+ }
+
+ if (dump_stats || v->vid == pvid ||
+ !br_vlan_can_enter_range(v, range_end)) {
+ u16 vlan_flags = br_vlan_flags(range_start, pvid);
+
+ if (!br_vlan_fill_vids(skb, range_start->vid,
+ range_end->vid, range_start,
+ vlan_flags, dump_stats)) {
+ err = -EMSGSIZE;
+ break;
+ }
+ /* advance number of filled vlans */
+ idx += range_end->vid - range_start->vid + 1;
+
+ range_start = v;
+ }
+ range_end = v;
+ }
+
+ /* err will be 0 and range_start will be set in 3 cases here:
+ * - first vlan (range_start == range_end)
+ * - last vlan (range_start == range_end, not in range)
+ * - last vlan range (range_start != range_end, in range)
+ */
+ if (!err && range_start &&
+ !br_vlan_fill_vids(skb, range_start->vid, range_end->vid,
+ range_start, br_vlan_flags(range_start, pvid),
+ dump_stats))
+ err = -EMSGSIZE;
+
+ cb->args[1] = err ? idx : 0;
+
+ nlmsg_end(skb, nlh);
+
+ return err;
+}
+
+static const struct nla_policy br_vlan_db_dump_pol[BRIDGE_VLANDB_DUMP_MAX + 1] = {
+ [BRIDGE_VLANDB_DUMP_FLAGS] = { .type = NLA_U32 },
+};
+
+static int br_vlan_rtm_dump(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct nlattr *dtb[BRIDGE_VLANDB_DUMP_MAX + 1];
+ int idx = 0, err = 0, s_idx = cb->args[0];
+ struct net *net = sock_net(skb->sk);
+ struct br_vlan_msg *bvm;
+ struct net_device *dev;
+ u32 dump_flags = 0;
+
+ err = nlmsg_parse(cb->nlh, sizeof(*bvm), dtb, BRIDGE_VLANDB_DUMP_MAX,
+ br_vlan_db_dump_pol, cb->extack);
+ if (err < 0)
+ return err;
+
+ bvm = nlmsg_data(cb->nlh);
+ if (dtb[BRIDGE_VLANDB_DUMP_FLAGS])
+ dump_flags = nla_get_u32(dtb[BRIDGE_VLANDB_DUMP_FLAGS]);
+
+ rcu_read_lock();
+ if (bvm->ifindex) {
+ dev = dev_get_by_index_rcu(net, bvm->ifindex);
+ if (!dev) {
+ err = -ENODEV;
+ goto out_err;
+ }
+ err = br_vlan_dump_dev(dev, skb, cb, dump_flags);
+ /* if the dump completed without an error we return 0 here */
+ if (err != -EMSGSIZE)
+ goto out_err;
+ } else {
+ for_each_netdev_rcu(net, dev) {
+ if (idx < s_idx)
+ goto skip;
+
+ err = br_vlan_dump_dev(dev, skb, cb, dump_flags);
+ if (err == -EMSGSIZE)
+ break;
+skip:
+ idx++;
+ }
+ }
+ cb->args[0] = idx;
+ rcu_read_unlock();
+
+ return skb->len;
+
+out_err:
+ rcu_read_unlock();
+
+ return err;
+}
+
+static const struct nla_policy br_vlan_db_policy[BRIDGE_VLANDB_ENTRY_MAX + 1] = {
+ [BRIDGE_VLANDB_ENTRY_INFO] =
+ NLA_POLICY_EXACT_LEN(sizeof(struct bridge_vlan_info)),
+ [BRIDGE_VLANDB_ENTRY_RANGE] = { .type = NLA_U16 },
+ [BRIDGE_VLANDB_ENTRY_STATE] = { .type = NLA_U8 },
+ [BRIDGE_VLANDB_ENTRY_TUNNEL_INFO] = { .type = NLA_NESTED },
+};
+
+static int br_vlan_rtm_process_one(struct net_device *dev,
+ const struct nlattr *attr,
+ int cmd, struct netlink_ext_ack *extack)
+{
+ struct bridge_vlan_info *vinfo, vrange_end, *vinfo_last = NULL;
+ struct nlattr *tb[BRIDGE_VLANDB_ENTRY_MAX + 1];
+ bool changed = false, skip_processing = false;
+ struct net_bridge_vlan_group *vg;
+ struct net_bridge_port *p = NULL;
+ int err = 0, cmdmap = 0;
+ struct net_bridge *br;
+
+ if (netif_is_bridge_master(dev)) {
+ br = netdev_priv(dev);
+ vg = br_vlan_group(br);
+ } else {
+ p = br_port_get_rtnl(dev);
+ if (WARN_ON(!p))
+ return -ENODEV;
+ br = p->br;
+ vg = nbp_vlan_group(p);
+ }
+
+ if (WARN_ON(!vg))
+ return -ENODEV;
+
+ err = nla_parse_nested(tb, BRIDGE_VLANDB_ENTRY_MAX, attr,
+ br_vlan_db_policy, extack);
+ if (err)
+ return err;
+
+ if (!tb[BRIDGE_VLANDB_ENTRY_INFO]) {
+ NL_SET_ERR_MSG_MOD(extack, "Missing vlan entry info");
+ return -EINVAL;
+ }
+ memset(&vrange_end, 0, sizeof(vrange_end));
+
+ vinfo = nla_data(tb[BRIDGE_VLANDB_ENTRY_INFO]);
+ if (vinfo->flags & (BRIDGE_VLAN_INFO_RANGE_BEGIN |
+ BRIDGE_VLAN_INFO_RANGE_END)) {
+ NL_SET_ERR_MSG_MOD(extack, "Old-style vlan ranges are not allowed when using RTM vlan calls");
+ return -EINVAL;
+ }
+ if (!br_vlan_valid_id(vinfo->vid, extack))
+ return -EINVAL;
+
+ if (tb[BRIDGE_VLANDB_ENTRY_RANGE]) {
+ vrange_end.vid = nla_get_u16(tb[BRIDGE_VLANDB_ENTRY_RANGE]);
+ /* validate user-provided flags without RANGE_BEGIN */
+ vrange_end.flags = BRIDGE_VLAN_INFO_RANGE_END | vinfo->flags;
+ vinfo->flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN;
+
+ /* vinfo_last is the range start, vinfo the range end */
+ vinfo_last = vinfo;
+ vinfo = &vrange_end;
+
+ if (!br_vlan_valid_id(vinfo->vid, extack) ||
+ !br_vlan_valid_range(vinfo, vinfo_last, extack))
+ return -EINVAL;
+ }
+
+ switch (cmd) {
+ case RTM_NEWVLAN:
+ cmdmap = RTM_SETLINK;
+ skip_processing = !!(vinfo->flags & BRIDGE_VLAN_INFO_ONLY_OPTS);
+ break;
+ case RTM_DELVLAN:
+ cmdmap = RTM_DELLINK;
+ break;
+ }
+
+ if (!skip_processing) {
+ struct bridge_vlan_info *tmp_last = vinfo_last;
+
+ /* br_process_vlan_info may overwrite vinfo_last */
+ err = br_process_vlan_info(br, p, cmdmap, vinfo, &tmp_last,
+ &changed, extack);
+
+ /* notify first if anything changed */
+ if (changed)
+ br_ifinfo_notify(cmdmap, br, p);
+
+ if (err)
+ return err;
+ }
+
+ /* deal with options */
+ if (cmd == RTM_NEWVLAN) {
+ struct net_bridge_vlan *range_start, *range_end;
+
+ if (vinfo_last) {
+ range_start = br_vlan_find(vg, vinfo_last->vid);
+ range_end = br_vlan_find(vg, vinfo->vid);
+ } else {
+ range_start = br_vlan_find(vg, vinfo->vid);
+ range_end = range_start;
+ }
+
+ err = br_vlan_process_options(br, p, range_start, range_end,
+ tb, extack);
+ }
+
+ return err;
+}
+
+static int br_vlan_rtm_process(struct sk_buff *skb, struct nlmsghdr *nlh,
+ struct netlink_ext_ack *extack)
+{
+ struct net *net = sock_net(skb->sk);
+ struct br_vlan_msg *bvm;
+ struct net_device *dev;
+ struct nlattr *attr;
+ int err, vlans = 0;
+ int rem;
+
+ /* this should validate the header and check for remaining bytes */
+ err = nlmsg_parse(nlh, sizeof(*bvm), NULL, BRIDGE_VLANDB_MAX, NULL,
+ extack);
+ if (err < 0)
+ return err;
+
+ bvm = nlmsg_data(nlh);
+ dev = __dev_get_by_index(net, bvm->ifindex);
+ if (!dev)
+ return -ENODEV;
+
+ if (!netif_is_bridge_master(dev) && !netif_is_bridge_port(dev)) {
+ NL_SET_ERR_MSG_MOD(extack, "The device is not a valid bridge or bridge port");
+ return -EINVAL;
+ }
+
+ nlmsg_for_each_attr(attr, nlh, sizeof(*bvm), rem) {
+ if (nla_type(attr) != BRIDGE_VLANDB_ENTRY)
+ continue;
+
+ vlans++;
+ err = br_vlan_rtm_process_one(dev, attr, nlh->nlmsg_type,
+ extack);
+ if (err)
+ break;
+ }
+ if (!vlans) {
+ NL_SET_ERR_MSG_MOD(extack, "No vlans found to process");
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+void br_vlan_rtnl_init(void)
+{
+ rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_GETVLAN, NULL,
+ br_vlan_rtm_dump, 0);
+ rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_NEWVLAN,
+ br_vlan_rtm_process, NULL, 0);
+ rtnl_register_module(THIS_MODULE, PF_BRIDGE, RTM_DELVLAN,
+ br_vlan_rtm_process, NULL, 0);
+}
+
+void br_vlan_rtnl_uninit(void)
+{
+ rtnl_unregister(PF_BRIDGE, RTM_GETVLAN);
+ rtnl_unregister(PF_BRIDGE, RTM_NEWVLAN);
+ rtnl_unregister(PF_BRIDGE, RTM_DELVLAN);
+}
--
Gitblit v1.6.2