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| author | Ziyann <jaraidaniel@gmail.com> | 2014-11-26 11:37:03 +0100 |
|---|---|---|
| committer | Ziyann <jaraidaniel@gmail.com> | 2014-11-26 11:37:03 +0100 |
| commit | e90611725bc4dcc8946e74c38bb2c58fdf6bf98f (patch) | |
| tree | a6a2441a53406a47f3a4b4a5103c0a067aaab445 /net/ipv4/tcp_cubic.c | |
| parent | da82942bbd6a40cf7ddd3edc52352610905137ce (diff) | |
| parent | 5dba9ddd98cbc7ad319d687887981a0ea0062c75 (diff) | |
| download | kernel_samsung_tuna-e90611725bc4dcc8946e74c38bb2c58fdf6bf98f.zip kernel_samsung_tuna-e90611725bc4dcc8946e74c38bb2c58fdf6bf98f.tar.gz kernel_samsung_tuna-e90611725bc4dcc8946e74c38bb2c58fdf6bf98f.tar.bz2 | |
Merge remote-tracking branch 'linux/linux-3.0.y' into stable-newpvr
Conflicts:
arch/arm/include/asm/hardware/cache-l2x0.h
Diffstat (limited to 'net/ipv4/tcp_cubic.c')
| -rw-r--r-- | net/ipv4/tcp_cubic.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c index f376b05..b78eac2 100644 --- a/net/ipv4/tcp_cubic.c +++ b/net/ipv4/tcp_cubic.c @@ -204,8 +204,8 @@ static u32 cubic_root(u64 a) */ static inline void bictcp_update(struct bictcp *ca, u32 cwnd) { - u64 offs; - u32 delta, t, bic_target, max_cnt; + u32 delta, bic_target, max_cnt; + u64 offs, t; ca->ack_cnt++; /* count the number of ACKs */ @@ -248,9 +248,11 @@ static inline void bictcp_update(struct bictcp *ca, u32 cwnd) * if the cwnd < 1 million packets !!! */ + t = (s32)(tcp_time_stamp - ca->epoch_start); + t += msecs_to_jiffies(ca->delay_min >> 3); /* change the unit from HZ to bictcp_HZ */ - t = ((tcp_time_stamp + msecs_to_jiffies(ca->delay_min>>3) - - ca->epoch_start) << BICTCP_HZ) / HZ; + t <<= BICTCP_HZ; + do_div(t, HZ); if (t < ca->bic_K) /* t - K */ offs = ca->bic_K - t; @@ -412,7 +414,7 @@ static void bictcp_acked(struct sock *sk, u32 cnt, s32 rtt_us) return; /* Discard delay samples right after fast recovery */ - if ((s32)(tcp_time_stamp - ca->epoch_start) < HZ) + if (ca->epoch_start && (s32)(tcp_time_stamp - ca->epoch_start) < HZ) return; delay = (rtt_us << 3) / USEC_PER_MSEC; |