From: Jason Xing <kerneljasonxing@gmail.com>
To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, dsahern@kernel.org, ast@kernel.org,
daniel@iogearbox.net, andrii@kernel.org, martin.lau@linux.dev,
eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev,
john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me,
haoluo@google.com, jolsa@kernel.org, horms@kernel.org,
kuniyu@amazon.com, ncardwell@google.com
Cc: bpf@vger.kernel.org, netdev@vger.kernel.org,
Jason Xing <kerneljasonxing@gmail.com>
Subject: [PATCH bpf-next v3 3/4] tcp: bpf: support bpf_getsockopt for TCP_BPF_DELACK_MAX
Date: Wed, 12 Mar 2025 16:35:22 +0100 [thread overview]
Message-ID: <20250312153523.9860-4-kerneljasonxing@gmail.com> (raw)
In-Reply-To: <20250312153523.9860-1-kerneljasonxing@gmail.com>
Support bpf_getsockopt if application tries to know what the delayed ack
max time is.
Signed-off-by: Jason Xing <kerneljasonxing@gmail.com>
---
net/core/filter.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/core/filter.c b/net/core/filter.c
index 4d34d35af5c7..46ae8eb7a03c 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -5301,6 +5301,12 @@ static int bpf_sol_tcp_getsockopt(struct sock *sk, int optname,
memcpy(optval, &rto_min_us, optlen);
break;
}
+ case TCP_BPF_DELACK_MAX: {
+ int delack_max_us = jiffies_to_usecs(inet_csk(sk)->icsk_delack_max);
+
+ memcpy(optval, &delack_max_us, optlen);
+ break;
+ }
default:
return -EINVAL;
}
--
2.43.5
next prev parent reply other threads:[~2025-03-12 15:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-12 15:35 [PATCH bpf-next v3 0/4] tcp: add some RTO MIN and DELACK MAX {bpf_}set/getsockopt supports Jason Xing
2025-03-12 15:35 ` [PATCH bpf-next v3 1/4] tcp: bpf: introduce bpf_sol_tcp_getsockopt to support TCP_BPF flags Jason Xing
2025-03-12 15:35 ` [PATCH bpf-next v3 2/4] tcp: bpf: support bpf_getsockopt for TCP_BPF_RTO_MIN Jason Xing
2025-03-12 15:35 ` Jason Xing [this message]
2025-03-12 15:35 ` [PATCH bpf-next v3 4/4] selftests: add bpf_set/getsockopt() for TCP_BPF_DELACK_MAX and TCP_BPF_RTO_MIN Jason Xing
2025-03-13 22:10 ` [PATCH bpf-next v3 0/4] tcp: add some RTO MIN and DELACK MAX {bpf_}set/getsockopt supports patchwork-bot+netdevbpf
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