From 3d44de9a10ea2b1658dfaed8ea6d3d7b6e0defbb Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 20 Oct 2023 12:57:45 +0000 Subject: tcp: add RTAX_FEATURE_TCP_USEC_TS This new dst feature flag will be used to allow TCP to use usec based timestamps instead of msec ones. ip route .... feature tcp_usec_ts Also document that RTAX_FEATURE_SACK and RTAX_FEATURE_TIMESTAMP are unused. RTAX_FEATURE_ALLFRAG is also going away soon. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/tcp.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/tcp.h b/include/linux/tcp.h index e15452df9804..04a0e647ef74 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -576,4 +576,9 @@ void tcp_sock_set_quickack(struct sock *sk, int val); int tcp_sock_set_syncnt(struct sock *sk, int val); int tcp_sock_set_user_timeout(struct sock *sk, int val); +static inline bool dst_tcp_usec_ts(const struct dst_entry *dst) +{ + return dst_feature(dst, RTAX_FEATURE_TCP_USEC_TS); +} + #endif /* _LINUX_TCP_H */ -- cgit v1.2.3