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| author | Gao Feng <gfree.wind@gmail.com> | 2022-08-04 23:04:21 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-08-08 09:45:14 +0100 |
| commit | f574f7f839fc1753467b52417591cf2668825a92 (patch) | |
| tree | 267ec77064f655727c6504ce6c89c9e396d8d9f4 /net | |
| parent | 7a542bee27c6a57e45c33cbbdc963325fd6493af (diff) | |
| download | lwn-f574f7f839fc1753467b52417591cf2668825a92.tar.gz lwn-f574f7f839fc1753467b52417591cf2668825a92.zip | |
net: bpf: Use the protocol's set_rcvlowat behavior if there is one
The commit d1361840f8c5 ("tcp: fix SO_RCVLOWAT and RCVBUF autotuning")
add one new (struct proto_ops)->set_rcvlowat method so that a protocol
can override the default setsockopt(SO_RCVLOWAT) behavior.
The prior bpf codes don't check and invoke the protos's set_rcvlowat,
now correct it.
Signed-off-by: Gao Feng <gfree.wind@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/filter.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 5669248aff25..e8508aaafd27 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -5063,7 +5063,10 @@ static int __bpf_setsockopt(struct sock *sk, int level, int optname, case SO_RCVLOWAT: if (val < 0) val = INT_MAX; - WRITE_ONCE(sk->sk_rcvlowat, val ? : 1); + if (sk->sk_socket && sk->sk_socket->ops->set_rcvlowat) + ret = sk->sk_socket->ops->set_rcvlowat(sk, val); + else + WRITE_ONCE(sk->sk_rcvlowat, val ? : 1); break; case SO_MARK: if (sk->sk_mark != val) { |