diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-09-22 06:42:19 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-01 21:39:19 +0300 |
| commit | 959d5c11601b2b337c364b2e3102d392365e3dd3 (patch) | |
| tree | f73ca0bc48ac759666bb259de30bd61bc1c5acfd /net/ipv4/datagram.c | |
| parent | 3523bc91e4b4da39ccf18a0252d13108877ece0a (diff) | |
| download | linux-959d5c11601b2b337c364b2e3102d392365e3dd3.tar.xz | |
inet: implement lockless getsockopt(IP_UNICAST_IF)
Add missing READ_ONCE() annotations when reading inet->uc_index
Implementing getsockopt(IP_UNICAST_IF) locklessly seems possible,
the setsockopt() part might not be possible at the moment.
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 'net/ipv4/datagram.c')
| -rw-r--r-- | net/ipv4/datagram.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c index cb5dbee9e018..1480e9ebdfef 100644 --- a/net/ipv4/datagram.c +++ b/net/ipv4/datagram.c @@ -43,7 +43,7 @@ int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len if (!saddr) saddr = inet->mc_addr; } else if (!oif) { - oif = inet->uc_index; + oif = READ_ONCE(inet->uc_index); } fl4 = &inet->cork.fl.u.ip4; rt = ip_route_connect(fl4, usin->sin_addr.s_addr, saddr, oif, |