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authorAmit Cohen <amcohen@nvidia.com>2021-02-07 11:22:51 +0300
committerDavid S. Miller <davem@davemloft.net>2021-02-09 03:47:03 +0300
commit648106c30a635e18fb55da60d4fcbfca6f6483ac (patch)
tree8bf0d51e10d0bcc84786245467b8fa09bb20a271 /net/ipv4/fib_trie.c
parent36c5100e859d93b3436ae24810612b05addb1e89 (diff)
downloadlinux-648106c30a635e18fb55da60d4fcbfca6f6483ac.tar.xz
IPv4: Extend 'fib_notify_on_flag_change' sysctl
Add the value '2' to 'fib_notify_on_flag_change' to allow sending notifications only for failed route installation. Separate value is added for such notifications because there are less of them, so they do not impact performance and some users will find them more important. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_trie.c')
-rw-r--r--net/ipv4/fib_trie.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 80147caa9bfd..25cf387cca5b 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1053,6 +1053,12 @@ void fib_alias_hw_flags_set(struct net *net, const struct fib_rt_info *fri)
fa_match->offload = fri->offload;
fa_match->trap = fri->trap;
+
+ /* 2 means send notifications only if offload_failed was changed. */
+ if (net->ipv4.sysctl_fib_notify_on_flag_change == 2 &&
+ fa_match->offload_failed == fri->offload_failed)
+ goto out;
+
fa_match->offload_failed = fri->offload_failed;
if (!net->ipv4.sysctl_fib_notify_on_flag_change)