diff options
| author | Kuniyuki Iwashima <kuniyu@google.com> | 2026-02-28 22:17:32 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-02 18:49:41 -0800 |
| commit | 3c1e53e55418d4ca4040e281501643a96e227974 (patch) | |
| tree | 6f4ad1ef3380cdcbb12105ef85ddedb09e8ebf19 /include | |
| parent | 4480d5fa1f6ebe7dfc546e14371d63c8b915a82d (diff) | |
ipmr: Add dedicated mutex for mrt->{mfc_hash,mfc_cache_list}.
We will no longer hold RTNL for ipmr_rtm_route() to modify the
MFC hash table.
Only __dev_get_by_index() in rtm_to_ipmr_mfcc() is the RTNL
dependant, otherwise, we just need protection for mrt->mfc_hash
and mrt->mfc_cache_list.
Let's add a new mutex for ipmr_mfc_add(), ipmr_mfc_delete(),
and mroute_clean_tables() (setsockopt(MRT_FLUSH or MRT_DONE)).
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260228221800.1082070-15-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/netns/ipv4.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 94dca64fec41..4c249aeaf7f1 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -281,6 +281,7 @@ struct netns_ipv4 { #endif struct fib_notifier_ops *ipmr_notifier_ops; atomic_t ipmr_seq; + struct mutex mfc_mutex; #endif #ifdef CONFIG_IP_ROUTE_MULTIPATH struct sysctl_fib_multipath_hash_seed sysctl_fib_multipath_hash_seed; |