diff options
| author | Eric Dumazet <edumazet@google.com> | 2023-10-20 12:57:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-10-23 09:35:01 +0100 |
| commit | 3d44de9a10ea2b1658dfaed8ea6d3d7b6e0defbb (patch) | |
| tree | 2251ad14526ebd58579a5c7187e30fd2540991c6 | |
| parent | b04c3320885a88a94e4bbb2f9dbc4871c9bc336f (diff) | |
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 <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/tcp.h | 5 | ||||
| -rw-r--r-- | include/uapi/linux/rtnetlink.h | 18 |
2 files changed, 16 insertions, 7 deletions
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 */ diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h index 51c13cf9c5ae..aa2482a0614a 100644 --- a/include/uapi/linux/rtnetlink.h +++ b/include/uapi/linux/rtnetlink.h @@ -502,13 +502,17 @@ enum { #define RTAX_MAX (__RTAX_MAX - 1) -#define RTAX_FEATURE_ECN (1 << 0) -#define RTAX_FEATURE_SACK (1 << 1) -#define RTAX_FEATURE_TIMESTAMP (1 << 2) -#define RTAX_FEATURE_ALLFRAG (1 << 3) - -#define RTAX_FEATURE_MASK (RTAX_FEATURE_ECN | RTAX_FEATURE_SACK | \ - RTAX_FEATURE_TIMESTAMP | RTAX_FEATURE_ALLFRAG) +#define RTAX_FEATURE_ECN (1 << 0) +#define RTAX_FEATURE_SACK (1 << 1) /* unused */ +#define RTAX_FEATURE_TIMESTAMP (1 << 2) /* unused */ +#define RTAX_FEATURE_ALLFRAG (1 << 3) +#define RTAX_FEATURE_TCP_USEC_TS (1 << 4) + +#define RTAX_FEATURE_MASK (RTAX_FEATURE_ECN | \ + RTAX_FEATURE_SACK | \ + RTAX_FEATURE_TIMESTAMP | \ + RTAX_FEATURE_ALLFRAG | \ + RTAX_FEATURE_TCP_USEC_TS) struct rta_session { __u8 proto; |