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| author | Eric Dumazet <edumazet@google.com> | 2023-09-12 16:01:59 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-15 10:33:46 +0100 |
| commit | b0adfba7ee770fef20b1b6d86706c28f7fccfb07 (patch) | |
| tree | 4a7a9fe910c850fcc4492d034cf57d0db89c4ae2 /include/net/ipv6.h | |
| parent | f2fa1c812c91e99d0317d1fc7d845e1e05f39716 (diff) | |
| download | linux-b0adfba7ee770fef20b1b6d86706c28f7fccfb07.tar.gz | |
ipv6: lockless IPV6_UNICAST_HOPS implementation
Some np->hop_limit accesses are racy, when socket lock is not held.
Add missing annotations and switch to full lockless implementation.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ipv6.h')
| -rw-r--r-- | include/net/ipv6.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index c6932d1a3fa80..2e8e7e31e02ea 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -916,7 +916,7 @@ static inline int ip6_sk_dst_hoplimit(struct ipv6_pinfo *np, struct flowi6 *fl6, if (ipv6_addr_is_multicast(&fl6->daddr)) hlimit = np->mcast_hops; else - hlimit = np->hop_limit; + hlimit = READ_ONCE(np->hop_limit); if (hlimit < 0) hlimit = ip6_dst_hoplimit(dst); return hlimit; |