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authorEric Dumazet <edumazet@google.com>2018-09-21 18:51:49 +0300
committerDavid S. Miller <davem@davemloft.net>2018-09-22 05:37:59 +0300
commit9799ccb0e984a5c1311b22a212e7ff96e8b736de (patch)
tree85061422e73b7f752c2e5c568ba57367e28d31a1 /include
parent142537e419234c396890a22806b8644dce21b132 (diff)
downloadlinux-9799ccb0e984a5c1311b22a212e7ff96e8b736de.tar.xz
tcp: add tcp_wstamp_ns socket field
TCP will soon provide earliest departure time on TX skbs. It needs to track this in a new variable. tcp_mstamp_refresh() needs to update this variable, and became too big to stay an inline. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/tcp.h2
-rw-r--r--include/net/tcp.h12
2 files changed, 3 insertions, 11 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 263e37271afd..848f5b25e178 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -248,6 +248,8 @@ struct tcp_sock {
syn_smc:1; /* SYN includes SMC */
u32 tlp_high_seq; /* snd_nxt at the time of TLP retransmit. */
+ u64 tcp_wstamp_ns; /* departure time for next sent data packet */
+
/* RTT measurement */
u64 tcp_mstamp; /* most recent packet received/sent */
u32 srtt_us; /* smoothed round trip time << 3 in usecs */
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 0ca5ea10dc06..370198fdc65d 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -752,17 +752,7 @@ static inline u32 tcp_time_stamp_raw(void)
return div_u64(tcp_clock_ns(), NSEC_PER_SEC / TCP_TS_HZ);
}
-
-/* Refresh 1us clock of a TCP socket,
- * ensuring monotically increasing values.
- */
-static inline void tcp_mstamp_refresh(struct tcp_sock *tp)
-{
- u64 val = tcp_clock_us();
-
- if (val > tp->tcp_mstamp)
- tp->tcp_mstamp = val;
-}
+void tcp_mstamp_refresh(struct tcp_sock *tp);
static inline u32 tcp_stamp_us_delta(u64 t1, u64 t0)
{