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.c | 142 +++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 130 insertions(+), 12 deletions(-)
diff --git a/kernel/net/bridge/br.c b/kernel/net/bridge/br.c
index b0a0b82..1b169f8 100644
--- a/kernel/net/bridge/br.c
+++ b/kernel/net/bridge/br.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Generic parts
* Linux ethernet bridge
*
* Authors:
* Lennert Buytenhek <buytenh@gnu.org>
- *
- * 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/module.h>
@@ -31,6 +27,8 @@
*/
static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
{
+ struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr);
+ struct netdev_notifier_pre_changeaddr_info *prechaddr_info;
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct net_bridge_port *p;
struct net_bridge *br;
@@ -38,10 +36,19 @@
bool changed_addr;
int err;
- /* register of bridge completed, add sysfs entries */
- if ((dev->priv_flags & IFF_EBRIDGE) && event == NETDEV_REGISTER) {
- br_sysfs_addbr(dev);
- return NOTIFY_DONE;
+ if (dev->priv_flags & IFF_EBRIDGE) {
+ err = br_vlan_bridge_event(dev, event, ptr);
+ if (err)
+ return notifier_from_errno(err);
+
+ if (event == NETDEV_REGISTER) {
+ /* register of bridge completed, add sysfs entries */
+ err = br_sysfs_addbr(dev);
+ if (err)
+ return notifier_from_errno(err);
+
+ return NOTIFY_DONE;
+ }
}
/* not a port of a bridge */
@@ -54,6 +61,17 @@
switch (event) {
case NETDEV_CHANGEMTU:
br_mtu_auto_adjust(br);
+ break;
+
+ case NETDEV_PRE_CHANGEADDR:
+ if (br->dev->addr_assign_type == NET_ADDR_SET)
+ break;
+ prechaddr_info = ptr;
+ err = dev_pre_changeaddr_notify(br->dev,
+ prechaddr_info->dev_addr,
+ extack);
+ if (err)
+ return notifier_from_errno(err);
break;
case NETDEV_CHANGEADDR:
@@ -113,6 +131,9 @@
break;
}
+ if (event != NETDEV_UNREGISTER)
+ br_vlan_port_event(p, event);
+
/* Events that may cause spanning tree to refresh */
if (!notified && (event == NETDEV_CHANGEADDR || event == NETDEV_UP ||
event == NETDEV_CHANGE || event == NETDEV_DOWN))
@@ -151,7 +172,7 @@
break;
}
br_fdb_offloaded_set(br, p, fdb_info->addr,
- fdb_info->vid);
+ fdb_info->vid, true);
break;
case SWITCHDEV_FDB_DEL_TO_BRIDGE:
fdb_info = ptr;
@@ -163,7 +184,12 @@
case SWITCHDEV_FDB_OFFLOADED:
fdb_info = ptr;
br_fdb_offloaded_set(br, p, fdb_info->addr,
- fdb_info->vid);
+ fdb_info->vid, fdb_info->offloaded);
+ break;
+ case SWITCHDEV_FDB_FLUSH_TO_BRIDGE:
+ fdb_info = ptr;
+ /* Don't delete static entries */
+ br_fdb_delete_by_port(br, p, fdb_info->vid, 0);
break;
}
@@ -174,6 +200,98 @@
static struct notifier_block br_switchdev_notifier = {
.notifier_call = br_switchdev_event,
};
+
+/* br_boolopt_toggle - change user-controlled boolean option
+ *
+ * @br: bridge device
+ * @opt: id of the option to change
+ * @on: new option value
+ * @extack: extack for error messages
+ *
+ * Changes the value of the respective boolean option to @on taking care of
+ * any internal option value mapping and configuration.
+ */
+int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
+ struct netlink_ext_ack *extack)
+{
+ switch (opt) {
+ case BR_BOOLOPT_NO_LL_LEARN:
+ br_opt_toggle(br, BROPT_NO_LL_LEARN, on);
+ break;
+ default:
+ /* shouldn't be called with unsupported options */
+ WARN_ON(1);
+ break;
+ }
+
+ return 0;
+}
+
+int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt)
+{
+ switch (opt) {
+ case BR_BOOLOPT_NO_LL_LEARN:
+ return br_opt_get(br, BROPT_NO_LL_LEARN);
+ default:
+ /* shouldn't be called with unsupported options */
+ WARN_ON(1);
+ break;
+ }
+
+ return 0;
+}
+
+int br_boolopt_multi_toggle(struct net_bridge *br,
+ struct br_boolopt_multi *bm,
+ struct netlink_ext_ack *extack)
+{
+ unsigned long bitmap = bm->optmask;
+ int err = 0;
+ int opt_id;
+
+ for_each_set_bit(opt_id, &bitmap, BR_BOOLOPT_MAX) {
+ bool on = !!(bm->optval & BIT(opt_id));
+
+ err = br_boolopt_toggle(br, opt_id, on, extack);
+ if (err) {
+ br_debug(br, "boolopt multi-toggle error: option: %d current: %d new: %d error: %d\n",
+ opt_id, br_boolopt_get(br, opt_id), on, err);
+ break;
+ }
+ }
+
+ return err;
+}
+
+void br_boolopt_multi_get(const struct net_bridge *br,
+ struct br_boolopt_multi *bm)
+{
+ u32 optval = 0;
+ int opt_id;
+
+ for (opt_id = 0; opt_id < BR_BOOLOPT_MAX; opt_id++)
+ optval |= (br_boolopt_get(br, opt_id) << opt_id);
+
+ bm->optval = optval;
+ bm->optmask = GENMASK((BR_BOOLOPT_MAX - 1), 0);
+}
+
+/* private bridge options, controlled by the kernel */
+void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on)
+{
+ bool cur = !!br_opt_get(br, opt);
+
+ br_debug(br, "toggle option: %d state: %d -> %d\n",
+ opt, cur, on);
+
+ if (cur == on)
+ return;
+
+ if (on)
+ set_bit(opt, &br->options);
+ else
+ clear_bit(opt, &br->options);
+}
static void __net_exit br_net_exit(struct net *net)
{
@@ -202,7 +320,7 @@
{
int err;
- BUILD_BUG_ON(sizeof(struct br_input_skb_cb) > FIELD_SIZEOF(struct sk_buff, cb));
+ BUILD_BUG_ON(sizeof(struct br_input_skb_cb) > sizeof_field(struct sk_buff, cb));
err = stp_proto_register(&br_stp_proto);
if (err < 0) {
--
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