5536c2039e
Renamed patches to keep their original numbering from codelinaro.org Fixed minor bugs and added support for the qca-nss-drv-l2tpv2 module
83 lines
2.4 KiB
Diff
83 lines
2.4 KiB
Diff
From 05f608faa62c7f5ecd930908d3fdfbc24d92050b Mon Sep 17 00:00:00 2001
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From: Zhi Chen <zhichen@codeaurora.org>
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Date: Thu, 27 Aug 2015 16:37:09 -0700
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Subject: [PATCH 216/500] bridge: add fdb events in linux bridge
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Notify fdb changing events to those modules which are interested in
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hosts joining/leaving or bridge port changing. This is required by
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RFS feature.
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Change-Id: I7b592ba09109e1785a5834b56987a19bc35886fe
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Signed-off-by: Zhi Chen <zhichen@codeaurora.org>
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Signed-off-by: Murat Sezgin <msezgin@codeaurora.org>
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---
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include/linux/if_bridge.h | 11 +++++++++++
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net/bridge/br_fdb.c | 31 +++++++++++++++++++++++++++++++
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2 files changed, 42 insertions(+)
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--- a/include/linux/if_bridge.h
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+++ b/include/linux/if_bridge.h
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@@ -236,4 +236,15 @@ typedef int (br_multicast_handle_hook_t)
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struct sk_buff *skb);
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extern br_multicast_handle_hook_t __rcu *br_multicast_handle_hook;
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+#define BR_FDB_EVENT_ADD 0x01
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+#define BR_FDB_EVENT_DEL 0x02
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+
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+struct br_fdb_event {
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+ struct net_device *dev;
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+ unsigned char addr[6];
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+ unsigned char is_local;
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+};
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+
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+extern void br_fdb_register_notify(struct notifier_block *nb);
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+extern void br_fdb_unregister_notify(struct notifier_block *nb);
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#endif
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--- a/net/bridge/br_fdb.c
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+++ b/net/bridge/br_fdb.c
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@@ -33,6 +33,20 @@ static const struct rhashtable_params br
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static struct kmem_cache *br_fdb_cache __read_mostly;
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+ATOMIC_NOTIFIER_HEAD(br_fdb_notifier_list);
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+
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+void br_fdb_register_notify(struct notifier_block *nb)
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+{
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+ atomic_notifier_chain_register(&br_fdb_notifier_list, nb);
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+}
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+EXPORT_SYMBOL_GPL(br_fdb_register_notify);
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+
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+void br_fdb_unregister_notify(struct notifier_block *nb)
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+{
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+ atomic_notifier_chain_unregister(&br_fdb_notifier_list, nb);
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+}
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+EXPORT_SYMBOL_GPL(br_fdb_unregister_notify);
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+
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int __init br_fdb_init(void)
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{
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br_fdb_cache = kmem_cache_create("bridge_fdb_cache",
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@@ -195,6 +209,23 @@ static void fdb_notify(struct net_bridge
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if (swdev_notify)
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br_switchdev_fdb_notify(br, fdb, type);
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+ if (fdb->dst) {
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+ int event;
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+ struct br_fdb_event fdb_event;
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+
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+ if (type == RTM_NEWNEIGH)
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+ event = BR_FDB_EVENT_ADD;
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+ else
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+ event = BR_FDB_EVENT_DEL;
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+
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+ fdb_event.dev = fdb->dst->dev;
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+ ether_addr_copy(fdb_event.addr, fdb->key.addr.addr);
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+ fdb_event.is_local = test_bit(BR_FDB_LOCAL, &fdb->flags);
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+ atomic_notifier_call_chain(&br_fdb_notifier_list,
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+ event,
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+ (void *)&fdb_event);
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+ }
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+
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skb = nlmsg_new(fdb_nlmsg_size(), GFP_ATOMIC);
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if (skb == NULL)
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goto errout;
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