Commit e7b9bfd1 authored by Akhmat Karakotov's avatar Akhmat Karakotov Committed by David S. Miller
Browse files

bpf: Add SO_TXREHASH setsockopt 



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

Signed-off-by: default avatarAkhmat Karakotov <hmukos@yandex-team.ru>
Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2127324a

net/core/filter.c

+10 −0
Original line number Diff line number Diff line
@@ -5091,6 +5091,13 @@ static int _bpf_setsockopt(struct sock *sk, int level, int optname, 
		case SO_REUSEPORT:

			sk->sk_reuseport = valbool;

			break;

		case SO_TXREHASH:

			if (val < -1 || val > 1) {

				ret = -EINVAL;

				break;

			}

			sk->sk_txrehash = (u8)val;

			break;

		default:

			ret = -EINVAL;

		}
@@ -5269,6 +5276,9 @@ static int _bpf_getsockopt(struct sock *sk, int level, int optname, 
		case SO_REUSEPORT:

			*((int *)optval) = sk->sk_reuseport;

			break;

		case SO_TXREHASH:

			*((int *)optval) = sk->sk_txrehash;

			break;

		default:

			goto err_clear;

		}