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authorTakashi Iwai <tiwai@suse.de>2013-10-19 16:31:14 -0400
committerTakashi Iwai <tiwai@suse.de>2013-10-19 16:31:14 -0400
commit20c87bd40e6c1ff7e31cc5eea4fb37829a57eb58 (patch)
tree528c2f113e428e060e185ccab7eab8d8e87c7d36 /net/ipv4/tcp_output.c
parentd14df339c72b6efbba4eddd1d1f3f4b173273f74 (diff)
parent40f8989695660dee984338861ca9900b8e0b5183 (diff)
Merge tag 'asoc-v3.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.12 A number of small, fairly unexciting, fixes for drivers - nothing stand out.
Diffstat (limited to 'net/ipv4/tcp_output.c')
-rw-r--r--net/ipv4/tcp_output.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 7c83cb8bf137..e6bb8256e59f 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -895,8 +895,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
895 895
896 skb_orphan(skb); 896 skb_orphan(skb);
897 skb->sk = sk; 897 skb->sk = sk;
898 skb->destructor = (sysctl_tcp_limit_output_bytes > 0) ? 898 skb->destructor = tcp_wfree;
899 tcp_wfree : sock_wfree;
900 atomic_add(skb->truesize, &sk->sk_wmem_alloc); 899 atomic_add(skb->truesize, &sk->sk_wmem_alloc);
901 900
902 /* Build TCP header and checksum it. */ 901 /* Build TCP header and checksum it. */
@@ -1840,7 +1839,6 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
1840 while ((skb = tcp_send_head(sk))) { 1839 while ((skb = tcp_send_head(sk))) {
1841 unsigned int limit; 1840 unsigned int limit;
1842 1841
1843
1844 tso_segs = tcp_init_tso_segs(sk, skb, mss_now); 1842 tso_segs = tcp_init_tso_segs(sk, skb, mss_now);
1845 BUG_ON(!tso_segs); 1843 BUG_ON(!tso_segs);
1846 1844
@@ -1869,13 +1867,20 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
1869 break; 1867 break;
1870 } 1868 }
1871 1869
1872 /* TSQ : sk_wmem_alloc accounts skb truesize, 1870 /* TCP Small Queues :
1873 * including skb overhead. But thats OK. 1871 * Control number of packets in qdisc/devices to two packets / or ~1 ms.
1872 * This allows for :
1873 * - better RTT estimation and ACK scheduling
1874 * - faster recovery
1875 * - high rates
1874 */ 1876 */
1875 if (atomic_read(&sk->sk_wmem_alloc) >= sysctl_tcp_limit_output_bytes) { 1877 limit = max(skb->truesize, sk->sk_pacing_rate >> 10);
1878
1879 if (atomic_read(&sk->sk_wmem_alloc) > limit) {
1876 set_bit(TSQ_THROTTLED, &tp->tsq_flags); 1880 set_bit(TSQ_THROTTLED, &tp->tsq_flags);
1877 break; 1881 break;
1878 } 1882 }
1883
1879 limit = mss_now; 1884 limit = mss_now;
1880 if (tso_segs > 1 && !tcp_urg_mode(tp)) 1885 if (tso_segs > 1 && !tcp_urg_mode(tp))
1881 limit = tcp_mss_split_point(sk, skb, mss_now, 1886 limit = tcp_mss_split_point(sk, skb, mss_now,