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authorIdo Schimmel <idosch@mellanox.com>2019-12-14 17:53:10 +0200
committerDavid S. Miller <davem@davemloft.net>2019-12-16 16:14:42 -0800
commita8674f753e36f566d6c1d992ab85323d784281d9 (patch)
treeb5f938697199be8aa7ef675c275a0f7b3c4a8bd0 /net/ipv4/fib_trie.c
parentipv4: Notify route if replacing currently offloaded one (diff)
downloadlinux-dev-a8674f753e36f566d6c1d992ab85323d784281d9.tar.xz
linux-dev-a8674f753e36f566d6c1d992ab85323d784281d9.zip
ipv4: Notify newly added route if should be offloaded
When a route is added, it should only be notified in case it is the first route in the FIB alias list with the given {prefix, prefix length, table ID}. Otherwise, it is not used in the data path and should not be considered by switch drivers. v2: * Convert to use fib_find_alias() instead of fib_find_first_alias() Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--net/ipv4/fib_trie.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 4c80ac0344f4..f56945d00d7a 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1295,6 +1295,16 @@ int fib_table_insert(struct net *net, struct fib_table *tb,
if (WARN_ON_ONCE(!l))
goto out_free_new_fa;
+ if (fib_find_alias(&l->leaf, new_fa->fa_slen, 0, 0, tb->tb_id, true) ==
+ new_fa) {
+ enum fib_event_type fib_event;
+
+ fib_event = FIB_EVENT_ENTRY_REPLACE_TMP;
+ err = call_fib_entry_notifiers(net, fib_event, key, plen,
+ new_fa, extack);
+ if (err)
+ goto out_remove_new_fa;
+ }
err = call_fib_entry_notifiers(net, event, key, plen, new_fa, extack);
if (err)
goto out_remove_new_fa;