diff options
| author |   Miao Xu <miaxu@meta.com> | 2024-05-01 21:23:17 -0700 |
|---|---|---|
| committer |   Martin KaFai Lau <martin.lau@kernel.org> | 2024-05-02 16:26:56 -0700 |
| commit | 0325cbd21e3c26eff88bc7da303ffb46b4f5d294 (patch) | |
| tree | 0be09be46ced079b7b53b2b5fa528212c23daea7 | |
| parent | tcp: Add new args for cong_control in tcp_congestion_ops (diff) | |
| download | linux-0325cbd21e3c26eff88bc7da303ffb46b4f5d294.tar.xz linux-0325cbd21e3c26eff88bc7da303ffb46b4f5d294.zip | |
bpf: tcp: Allow to write tp->snd_cwnd_stamp in bpf_tcp_ca
This patch allows the write of tp->snd_cwnd_stamp in a bpf tcp
ca program. An use case of writing this field is to keep track
of the time whenever tp->snd_cwnd is raised or reduced inside
the `cong_control` callback.
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Miao Xu <miaxu@meta.com>
Link: https://lore.kernel.org/r/20240502042318.801932-3-miaxu@meta.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
| -rw-r--r-- | net/ipv4/bpf_tcp_ca.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/bpf_tcp_ca.c b/net/ipv4/bpf_tcp_ca.c index 6bd7f8db189a..18227757ec0c 100644 --- a/net/ipv4/bpf_tcp_ca.c +++ b/net/ipv4/bpf_tcp_ca.c @@ -107,6 +107,9 @@ static int bpf_tcp_ca_btf_struct_access(struct bpf_verifier_log *log, case offsetof(struct tcp_sock, snd_cwnd_cnt): end = offsetofend(struct tcp_sock, snd_cwnd_cnt); break; + case offsetof(struct tcp_sock, snd_cwnd_stamp): + end = offsetofend(struct tcp_sock, snd_cwnd_stamp); + break; case offsetof(struct tcp_sock, snd_ssthresh): end = offsetofend(struct tcp_sock, snd_ssthresh); break; |