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tcp_bbr: use tcp_jiffies32 instead of tcp_time_stamp 

Use tcp_jiffies32 instead of tcp_time_stamp, since
tcp_time_stamp will soon be only used for TCP TS option.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2017-05-16 14:00:05 -07:00 коммит произвёл David S. Miller
Родитель c2203cf75e
Коммит 2660bfa84e
1 изменённых файлов: 6 добавлений и 6 удалений
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12
net/ipv4/tcp_bbr.c
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@ -730,12 +730,12 @@ static void bbr_update_min_rtt(struct sock *sk, const struct rate_sample *rs)
bool filter_expired;
/* Track min RTT seen in the min_rtt_win_sec filter window: */
filter_expired = after(tcp_time_stamp,
filter_expired = after(tcp_jiffies32,
bbr->min_rtt_stamp + bbr_min_rtt_win_sec * HZ);
if (rs->rtt_us >= 0 &&
(rs->rtt_us <= bbr->min_rtt_us || filter_expired)) {
bbr->min_rtt_us = rs->rtt_us;
bbr->min_rtt_stamp = tcp_time_stamp;
bbr->min_rtt_stamp = tcp_jiffies32;
}
if (bbr_probe_rtt_mode_ms > 0 && filter_expired &&
@ -754,7 +754,7 @@ static void bbr_update_min_rtt(struct sock *sk, const struct rate_sample *rs)
/* Maintain min packets in flight for max(200 ms, 1 round). */
if (!bbr->probe_rtt_done_stamp &&
tcp_packets_in_flight(tp) <= bbr_cwnd_min_target) {
bbr->probe_rtt_done_stamp = tcp_time_stamp +
bbr->probe_rtt_done_stamp = tcp_jiffies32 +
msecs_to_jiffies(bbr_probe_rtt_mode_ms);
bbr->probe_rtt_round_done = 0;
bbr->next_rtt_delivered = tp->delivered;
@ -762,8 +762,8 @@ static void bbr_update_min_rtt(struct sock *sk, const struct rate_sample *rs)
if (bbr->round_start)
bbr->probe_rtt_round_done = 1;
if (bbr->probe_rtt_round_done &&
after(tcp_time_stamp, bbr->probe_rtt_done_stamp)) {
bbr->min_rtt_stamp = tcp_time_stamp;
after(tcp_jiffies32, bbr->probe_rtt_done_stamp)) {
bbr->min_rtt_stamp = tcp_jiffies32;
bbr->restore_cwnd = 1; /* snap to prior_cwnd */
bbr_reset_mode(sk);
}
@ -810,7 +810,7 @@ static void bbr_init(struct sock *sk)
bbr->probe_rtt_done_stamp = 0;
bbr->probe_rtt_round_done = 0;
bbr->min_rtt_us = tcp_min_rtt(tp);
bbr->min_rtt_stamp = tcp_time_stamp;
bbr->min_rtt_stamp = tcp_jiffies32;
minmax_reset(&bbr->bw, bbr->rtt_cnt, 0); /* init max bw to 0 */