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| author | Jörn-Thorben Hinz <jthinz@mailbox.tu-berlin.de> | 2022-06-22 22:12:23 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-06-23 19:49:57 +0300 |
| commit | 41c95dd6a604dc3f5fae55c99c138cc8e7fec76e (patch) | |
| tree | 5c10deab27a78ce45f2989ef3306c512bf82f292 /net/ipv4/bpf_tcp_ca.c | |
| parent | 9676feccacdb0571791c88b23e3b7ac4e7c9c457 (diff) | |
| download | linux-41c95dd6a604dc3f5fae55c99c138cc8e7fec76e.tar.xz | |
bpf: Allow a TCP CC to write sk_pacing_rate and sk_pacing_status
A CC that implements tcp_congestion_ops.cong_control() should be able to
control sk_pacing_rate and set sk_pacing_status, since
tcp_update_pacing_rate() is never called in this case. A built-in CC or
one from a kernel module is already able to write to both struct sock
members. For a BPF program, write access has not been allowed, yet.
Signed-off-by: Jörn-Thorben Hinz <jthinz@mailbox.tu-berlin.de>
Reviewed-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/r/20220622191227.898118-2-jthinz@mailbox.tu-berlin.de
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net/ipv4/bpf_tcp_ca.c')
| -rw-r--r-- | net/ipv4/bpf_tcp_ca.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/ipv4/bpf_tcp_ca.c b/net/ipv4/bpf_tcp_ca.c index f79ab942f03b..1f5c53ede4e5 100644 --- a/net/ipv4/bpf_tcp_ca.c +++ b/net/ipv4/bpf_tcp_ca.c @@ -111,6 +111,12 @@ static int bpf_tcp_ca_btf_struct_access(struct bpf_verifier_log *log, } switch (off) { + case offsetof(struct sock, sk_pacing_rate): + end = offsetofend(struct sock, sk_pacing_rate); + break; + case offsetof(struct sock, sk_pacing_status): + end = offsetofend(struct sock, sk_pacing_status); + break; case bpf_ctx_range(struct inet_connection_sock, icsk_ca_priv): end = offsetofend(struct inet_connection_sock, icsk_ca_priv); break; |