[RFC PATCH v2 net-next 3/4] bpf: Add SO_TXREHASH setsockopt
From: Akhmat Karakotov <hidden>
Date: 2021-11-12 18:20:07
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [networking] (tcx & tc bpf, sock_addr), networking [general], the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Add bpf socket option to override rehash behaviour from userspace or from bpf. Signed-off-by: Akhmat Karakotov <redacted> --- net/core/filter.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/net/core/filter.c b/net/core/filter.c
index 2e32cee2c469..889ba86f7cf0 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c@@ -4808,6 +4808,13 @@ 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 = val; + break; default: ret = -EINVAL; }
@@ -4980,6 +4987,9 @@ 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; }
--
2.17.1