diff options
| author |   Eric Dumazet <edumazet@google.com> | 2018-09-21 08:51:50 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-09-21 19:37:59 -0700 |
| commit | d3edd06ea8ea9e03de6567fda80b8be57e21a537 (patch) | |
| tree | 090196833fede243080048ee8d143b3cc83fecd4 /include/net/tcp.h | |
| parent | tcp: add tcp_wstamp_ns socket field (diff) | |
| download | linux-dev-d3edd06ea8ea9e03de6567fda80b8be57e21a537.tar.xz linux-dev-d3edd06ea8ea9e03de6567fda80b8be57e21a537.zip | |
tcp: provide earliest departure time in skb->tstamp
Switch internal TCP skb->skb_mstamp to skb->skb_mstamp_ns,
from usec units to nsec units.
Do not clear skb->tstamp before entering IP stacks in TX,
so that qdisc or devices can implement pacing based on the
earliest departure time instead of socket sk->sk_pacing_rate
Packets are fed with tcp_wstamp_ns, and following patch
will update tcp_wstamp_ns when both TCP and sch_fq switch to
the earliest departure time mechanism.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | include/net/tcp.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 370198fdc65d..ff15d8e0d525 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -761,13 +761,13 @@ static inline u32 tcp_stamp_us_delta(u64 t1, u64 t0) static inline u32 tcp_skb_timestamp(const struct sk_buff *skb) { - return div_u64(skb->skb_mstamp, USEC_PER_SEC / TCP_TS_HZ); + return div_u64(skb->skb_mstamp_ns, NSEC_PER_SEC / TCP_TS_HZ); } /* provide the departure time in us unit */ static inline u64 tcp_skb_timestamp_us(const struct sk_buff *skb) { - return skb->skb_mstamp; + return div_u64(skb->skb_mstamp_ns, NSEC_PER_USEC); } @@ -813,7 +813,7 @@ struct tcp_skb_cb { #define TCPCB_SACKED_RETRANS 0x02 /* SKB retransmitted */ #define TCPCB_LOST 0x04 /* SKB is lost */ #define TCPCB_TAGBITS 0x07 /* All tag bits */ -#define TCPCB_REPAIRED 0x10 /* SKB repaired (no skb_mstamp) */ +#define TCPCB_REPAIRED 0x10 /* SKB repaired (no skb_mstamp_ns) */ #define TCPCB_EVER_RETRANS 0x80 /* Ever retransmitted frame */ #define TCPCB_RETRANS (TCPCB_SACKED_RETRANS|TCPCB_EVER_RETRANS| \ TCPCB_REPAIRED) |