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authorEric Dumazet <edumazet@google.com>2017-05-16 14:00:06 -0700
committerDavid S. Miller <davem@davemloft.net>2017-05-17 16:06:01 -0400
commitac35f562203a45a04f79f412509df48857f928be (patch)
treec7b159887508408d8b65ecaf3725ac00f351b552
parenttcp_bbr: use tcp_jiffies32 instead of tcp_time_stamp (diff)
downloadlinux-dev-ac35f562203a45a04f79f412509df48857f928be.tar.xz
linux-dev-ac35f562203a45a04f79f412509df48857f928be.zip
tcp: bic, cubic: 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>
-rw-r--r--net/ipv4/tcp_bic.c6
-rw-r--r--net/ipv4/tcp_cubic.c12
2 files changed, 9 insertions, 9 deletions
diff --git a/net/ipv4/tcp_bic.c b/net/ipv4/tcp_bic.c
index 36087bca9f48..609965f0e298 100644
--- a/net/ipv4/tcp_bic.c
+++ b/net/ipv4/tcp_bic.c
@@ -84,14 +84,14 @@ static void bictcp_init(struct sock *sk)
static inline void bictcp_update(struct bictcp *ca, u32 cwnd)
{
if (ca->last_cwnd == cwnd &&
- (s32)(tcp_time_stamp - ca->last_time) <= HZ / 32)
+ (s32)(tcp_jiffies32 - ca->last_time) <= HZ / 32)
return;
ca->last_cwnd = cwnd;
- ca->last_time = tcp_time_stamp;
+ ca->last_time = tcp_jiffies32;
if (ca->epoch_start == 0) /* record the beginning of an epoch */
- ca->epoch_start = tcp_time_stamp;
+ ca->epoch_start = tcp_jiffies32;
/* start off normal */
if (cwnd <= low_window) {
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index 2052ca740916..57ae5b5ae643 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -231,21 +231,21 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd, u32 acked)
ca->ack_cnt += acked; /* count the number of ACKed packets */
if (ca->last_cwnd == cwnd &&
- (s32)(tcp_time_stamp - ca->last_time) <= HZ / 32)
+ (s32)(tcp_jiffies32 - ca->last_time) <= HZ / 32)
return;
/* The CUBIC function can update ca->cnt at most once per jiffy.
* On all cwnd reduction events, ca->epoch_start is set to 0,
* which will force a recalculation of ca->cnt.
*/
- if (ca->epoch_start && tcp_time_stamp == ca->last_time)
+ if (ca->epoch_start && tcp_jiffies32 == ca->last_time)
goto tcp_friendliness;
ca->last_cwnd = cwnd;
- ca->last_time = tcp_time_stamp;
+ ca->last_time = tcp_jiffies32;
if (ca->epoch_start == 0) {
- ca->epoch_start = tcp_time_stamp; /* record beginning */
+ ca->epoch_start = tcp_jiffies32; /* record beginning */
ca->ack_cnt = acked; /* start counting */
ca->tcp_cwnd = cwnd; /* syn with cubic */
@@ -276,7 +276,7 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd, u32 acked)
* if the cwnd < 1 million packets !!!
*/
- t = (s32)(tcp_time_stamp - ca->epoch_start);
+ t = (s32)(tcp_jiffies32 - ca->epoch_start);
t += msecs_to_jiffies(ca->delay_min >> 3);
/* change the unit from HZ to bictcp_HZ */
t <<= BICTCP_HZ;
@@ -448,7 +448,7 @@ static void bictcp_acked(struct sock *sk, const struct ack_sample *sample)
return;
/* Discard delay samples right after fast recovery */
- if (ca->epoch_start && (s32)(tcp_time_stamp - ca->epoch_start) < HZ)
+ if (ca->epoch_start && (s32)(tcp_jiffies32 - ca->epoch_start) < HZ)
return;
delay = (sample->rtt_us << 3) / USEC_PER_MSEC;