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(parent: ebb3b78) | patch
tcp: annotate sk->sk_sndbuf lockless reads
authorEric Dumazet <edumazet@google.com>
Fri, 11 Oct 2019 03:17:45 +0000 (20:17 -0700)
committerDavid S. Miller <davem@davemloft.net>
Sun, 13 Oct 2019 17:13:08 +0000 (10:13 -0700)
commite292f05e0df73f9fcc93329663936e1ded97a988
tree441d2a07b24a8dc89e22f14b373ccbcdf6377b34tree | snapshot
parentebb3b78db7bf842270a46fd4fe7cc45c78fa5ed6commit | diff
tcp: annotate sk->sk_sndbuf lockless reads

For the sake of tcp_poll(), there are few places where we fetch
sk->sk_sndbuf while this field can change from IRQ or other cpu.

We need to add READ_ONCE() annotations, and also make sure write
sides use corresponding WRITE_ONCE() to avoid store-tearing.

Note that other transports probably need similar fixes.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/sock.h diff | blob | blame | history
net/core/filter.c diff | blob | blame | history
net/core/sock.c diff | blob | blame | history
net/ipv4/tcp.c diff | blob | blame | history
net/ipv4/tcp_input.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)