diff options
| author | Akhmat Karakotov <hmukos@yandex-team.ru> | 2022-01-31 16:31:22 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-01-31 15:05:25 +0000 |
| commit | 26859240e4ee701e0379f08634957adaff67e43a (patch) | |
| tree | 8f5b6f3e487f59496ec6a089b3e57d3beac1aab2 /net/core/sock.c | |
| parent | e187013abeb4c2a7ec8a4bb978844c7e92a1a6ec (diff) | |
| download | linux-26859240e4ee701e0379f08634957adaff67e43a.tar.gz | |
txhash: Add socket option to control TX hash rethink behavior
Add the SO_TXREHASH socket option to control hash rethink behavior per socket.
When default mode is set, sockets disable rehash at initialization and use
sysctl option when entering listen state. setsockopt() overrides default
behavior.
Signed-off-by: Akhmat Karakotov <hmukos@yandex-team.ru>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/sock.c')
| -rw-r--r-- | net/core/sock.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/core/sock.c b/net/core/sock.c index cccf21f3618dfb..5e711b42898fca 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1447,6 +1447,14 @@ set_sndbuf: break; } + case SO_TXREHASH: + if (val < -1 || val > 1) { + ret = -EINVAL; + break; + } + sk->sk_txrehash = (u8)val; + break; + default: ret = -ENOPROTOOPT; break; @@ -1834,6 +1842,10 @@ int sock_getsockopt(struct socket *sock, int level, int optname, v.val = sk->sk_reserved_mem; break; + case SO_TXREHASH: + v.val = sk->sk_txrehash; + break; + default: /* We implement the SO_SNDLOWAT etc to not be settable * (1003.1g 7). @@ -3279,6 +3291,7 @@ void sock_init_data(struct socket *sock, struct sock *sk) sk->sk_pacing_rate = ~0UL; WRITE_ONCE(sk->sk_pacing_shift, 10); sk->sk_incoming_cpu = -1; + sk->sk_txrehash = SOCK_TXREHASH_DEFAULT; sk_rx_queue_clear(sk); /* |