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bpf: Adds support for setting sndcwnd clamp

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Adds a new bpf_setsockopt for TCP sockets, TCP_BPF_SNDCWND_CLAMP, which
sets the initial congestion window. It is useful to limit the sndcwnd
when the host are close to each other (small RTT).

Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lawrence Brakmo
2017-06-30 20:02:53 -07:00
committed by David S. Miller
parent 7bc62e2854
commit 13bf96411a
2 changed files with 8 additions and 0 deletions
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include/uapi/linux/bpf.h
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@@ -784,5 +784,6 @@ enum {
};
#define TCP_BPF_IW 1001 /* Set TCP initial congestion window */
#define TCP_BPF_SNDCWND_CLAMP 1002 /* Set sndcwnd_clamp */
#endif /* _UAPI__LINUX_BPF_H__ */