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authorEric Dumazet <edumazet@google.com>2023-03-13 20:17:31 +0000
committerJakub Kicinski <kuba@kernel.org>2023-03-15 00:37:32 -0700
commitb071af523579df7341cabf0f16fc661125e9a13f (patch)
tree5fa71bee995c95b37e5c7d336ce22bbebb3417a0 /net/ipv6/route.c
parent68a84a127bb07d2a47e95c808520f742c54781c7 (diff)
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neighbour: annotate lockless accesses to n->nud_state
We have many lockless accesses to n->nud_state. Before adding another one in the following patch, add annotations to readers and writers. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Reviewed-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 0fdb03df2287..25c00c6f5131 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -638,7 +638,7 @@ static void rt6_probe(struct fib6_nh *fib6_nh)
idev = __in6_dev_get(dev);
neigh = __ipv6_neigh_lookup_noref(dev, nh_gw);
if (neigh) {
- if (neigh->nud_state & NUD_VALID)
+ if (READ_ONCE(neigh->nud_state) & NUD_VALID)
goto out;
write_lock(&neigh->lock);