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bpf: Add SO_TXREHASH setsockopt

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Add bpf socket option to override rehash behaviour from userspace or from bpf.

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>
This commit is contained in:
Akhmat Karakotov 2022-01-31 16:31:24 +03:00 committed by David S. Miller
parent 2127324a7d
commit e7b9bfd184
1 changed files with 10 additions and 0 deletions
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10
net/core/filter.c
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@ -5091,6 +5091,13 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname,
case SO_REUSEPORT: case SO_REUSEPORT:
sk->sk_reuseport = valbool; sk->sk_reuseport = valbool;
break; break;
case SO_TXREHASH:
if (val < -1 || val > 1) {
ret = -EINVAL;
break;
}
sk->sk_txrehash = (u8)val;
break;
default: default:
ret = -EINVAL; ret = -EINVAL;
} }
@ -5269,6 +5276,9 @@ static int _bpf_getsockopt(struct sock *sk, int level, int optname,
case SO_REUSEPORT: case SO_REUSEPORT:
*((int *)optval) = sk->sk_reuseport; *((int *)optval) = sk->sk_reuseport;
break; break;
case SO_TXREHASH:
*((int *)optval) = sk->sk_txrehash;
break;
default: default:
goto err_clear; goto err_clear;
} }