diff options
| -rw-r--r-- | Documentation/networking/ip-sysctl.rst | 3 | ||||
| -rw-r--r-- | net/ipv4/fib_trie.c | 6 | ||||
| -rw-r--r-- | net/ipv4/sysctl_net_ipv4.c | 2 |
3 files changed, 9 insertions, 2 deletions
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst index 61a358301f12..cd0ec577a5b5 100644 --- a/Documentation/networking/ip-sysctl.rst +++ b/Documentation/networking/ip-sysctl.rst @@ -180,7 +180,7 @@ min_adv_mss - INTEGER fib_notify_on_flag_change - INTEGER Whether to emit RTM_NEWROUTE notifications whenever RTM_F_OFFLOAD/ - RTM_F_TRAP flags are changed. + RTM_F_TRAP/RTM_F_OFFLOAD_FAILED flags are changed. After installing a route to the kernel, user space receives an acknowledgment, which means the route was installed in the kernel, @@ -197,6 +197,7 @@ fib_notify_on_flag_change - INTEGER - 0 - Do not emit notifications. - 1 - Emit notifications. + - 2 - Emit notifications only for RTM_F_OFFLOAD_FAILED flag change. IP Fragmentation: 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) diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index e5798b3b59d2..f55095d3ed16 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -1361,7 +1361,7 @@ static struct ctl_table ipv4_net_table[] = { .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE, + .extra2 = &two, }, { } }; |