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| author | Lawrence Brakmo | 2017-07-01 05:02:49 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-07-02 01:15:14 +0200 |
| commit | 91b5b21c7c16899abb37f4a9e4388b4e9aae0b9d (patch) | |
| tree | ff5989374783d9f11e822906a98e94d08a6f135a /include/net/tcp.h | |
| parent | bpf: Sample BPF program to set buffer sizes (diff) | |
| download | kernel-qcow2-linux-91b5b21c7c16899abb37f4a9e4388b4e9aae0b9d.tar.gz kernel-qcow2-linux-91b5b21c7c16899abb37f4a9e4388b4e9aae0b9d.tar.xz kernel-qcow2-linux-91b5b21c7c16899abb37f4a9e4388b4e9aae0b9d.zip | |
bpf: Add support for changing congestion control
Added support for changing congestion control for SOCK_OPS bpf
programs through the setsockopt bpf helper function. It also adds
a new SOCK_OPS op, BPF_SOCK_OPS_NEEDS_ECN, that is needed for
congestion controls, like dctcp, that need to enable ECN in the
SYN packets.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index d6bb3948203d..70483296157f 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1004,7 +1004,9 @@ void tcp_get_default_congestion_control(char *name); void tcp_get_available_congestion_control(char *buf, size_t len); void tcp_get_allowed_congestion_control(char *buf, size_t len); int tcp_set_allowed_congestion_control(char *allowed); -int tcp_set_congestion_control(struct sock *sk, const char *name); +int tcp_set_congestion_control(struct sock *sk, const char *name, bool load); +void tcp_reinit_congestion_control(struct sock *sk, + const struct tcp_congestion_ops *ca); u32 tcp_slow_start(struct tcp_sock *tp, u32 acked); void tcp_cong_avoid_ai(struct tcp_sock *tp, u32 w, u32 acked); @@ -2078,4 +2080,9 @@ static inline u32 tcp_rwnd_init_bpf(struct sock *sk) rwnd = 0; return rwnd; } + +static inline bool tcp_bpf_ca_needs_ecn(struct sock *sk) +{ + return (tcp_call_bpf(sk, BPF_SOCK_OPS_NEEDS_ECN) == 1); +} #endif /* _TCP_H */ |