Eric Dumazet aae06bf5f9 tcp: ecn: dont delay ACKS after CE ... While playing with CoDel and ECN marking, I discovered a non optimal behavior of receiver of CE (Congestion Encountered) segments. In pathological cases, sender has reduced its cwnd to low values, and receiver delays its ACK (by 40 ms). While RFC 3168 6.1.3 (The TCP Receiver) doesn't explicitly recommend to send immediate ACKS, we believe its better to not delay ACKS, because a CE segment should give same signal than a dropped segment, and its quite important to reduce RTT to give ECE/CWR signals as fast as possible. Note we already call tcp_enter_quickack_mode() from TCP_ECN_check_ce() if we receive a retransmit, for the same reason. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-08-06 14:14:34 -07:00
..
9p	net: Fix (nearly-)kernel-doc comments for various functions	2012-07-10 23:13:45 -07:00
802	tokenring: delete all remaining driver support	2012-05-15 20:23:16 -04:00
8021q	netpoll: move np->dev and np->dev_name init into __netpoll_setup()	2012-07-17 09:02:36 -07:00
appletalk	net: Fix (nearly-)kernel-doc comments for various functions	2012-07-10 23:13:45 -07:00
atm	net: Remove casts to same type	2012-06-04 11:45:11 -04:00
ax25	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-07-19 11:17:30 -07:00
batman-adv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-07-10 23:56:33 -07:00
bluetooth	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem	2012-07-20 12:30:48 -04:00
bridge	bridge: make port attributes const	2012-07-30 14:53:22 -07:00
caif	netvm: prevent a stream-specific deadlock	2012-07-31 18:42:47 -07:00
can	can: gw: Remove pointless casts	2012-07-10 22:36:17 +02:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2012-07-31 14:35:28 -07:00
core	tcp: Apply device TSO segment limit earlier	2012-08-02 00:19:17 -07:00
dcb	net: Fix non-kernel-doc comments with kernel-doc start marker	2012-07-10 23:13:45 -07:00
dccp	ipv4: Prepare for change of rt->rt_iif encoding.	2012-07-23 16:36:26 -07:00
decnet	ipv4: Restore old dst_free() behavior.	2012-07-31 14:41:38 -07:00
dns_resolver	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2012-05-21 20:27:36 -07:00
dsa	dsa: Convert compare_ether_addr to ether_addr_equal	2012-05-09 20:49:19 -04:00
ethernet	ipx: move peII functions	2012-07-19 10:48:00 -07:00
ieee802154	6lowpan: Change byte order when storing/accessing to len field	2012-07-16 22:52:02 -07:00
ipv4	tcp: ecn: dont delay ACKS after CE	2012-08-06 14:14:34 -07:00
ipv6	Merge branch 'akpm' (Andrew's patch-bomb)	2012-07-31 19:25:39 -07:00
ipx	ipx: move peII functions	2012-07-19 10:48:00 -07:00
irda	irda: Fix typo in irda	2012-07-16 23:23:52 -07:00
iucv	net: remove skb_orphan_try()	2012-06-15 15:30:15 -07:00
key	net: cleanup unsigned to unsigned int	2012-04-15 12:44:40 -04:00
l2tp	net: l2tp_eth: provide tx_dropped counter	2012-06-29 00:52:32 -07:00
lapb	lapb: Neaten debugging	2012-05-17 18:45:20 -04:00
llc	net: Fix (nearly-)kernel-doc comments for various functions	2012-07-10 23:13:45 -07:00
mac80211	Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211	2012-08-02 13:49:38 -04:00
mac802154	mac802154: sparse warnings: make symbols static	2012-07-12 07:54:45 -07:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-07-19 11:17:30 -07:00
netlabel	netlabel: use GFP flags from caller instead of GFP_ATOMIC	2012-03-22 19:29:57 -04:00
netlink	genetlink: define lockdep_genl_is_held() when CONFIG_LOCKDEP	2012-07-24 00:01:30 -07:00
netrom	net: Convert all sysctl registrations to register_net_sysctl	2012-04-20 21:22:30 -04:00
nfc	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem	2012-07-20 12:30:48 -04:00
openvswitch	Revert "openvswitch: potential NULL deref in sample()"	2012-07-27 13:45:51 -07:00
packet	net: added support for 40GbE link.	2012-06-27 15:42:24 -07:00
phonet	net: remove my future former mail address	2012-06-17 16:29:38 -07:00
rds	rds: set correct msg_namelen	2012-07-23 01:01:44 -07:00
rfkill	rfkill: Add the capability to switch all devices of all type in __rfkill_switch_all().	2012-06-06 15:18:17 -04:00
rose	net: Convert all sysctl registrations to register_net_sysctl	2012-04-20 21:22:30 -04:00
rxrpc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2012-07-10 23:56:33 -07:00
sched	net_sched: gact: Fix potential panic in tcf_gact().	2012-08-03 16:47:24 -07:00
sctp	netvm: prevent a stream-specific deadlock	2012-07-31 18:42:47 -07:00
sunrpc	Merge branch 'akpm' (Andrew's patch-bomb)	2012-07-31 19:25:39 -07:00
tipc	tipc: remove print_buf and deprecated log buffer code	2012-07-13 19:34:43 -04:00
unix	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-08-01 10:26:23 -07:00
wanrouter	wanmain: comparing array with NULL	2012-07-24 13:55:21 -07:00
wimax	net: cleanup unsigned to unsigned int	2012-04-15 12:44:40 -04:00
wireless	cfg80211: Clear "beacon_found" on regulatory restore	2012-08-02 15:34:22 +02:00
x25	net: Fix (nearly-)kernel-doc comments for various functions	2012-07-10 23:13:45 -07:00
xfrm	Fix unexpected SA hard expiration after changing date	2012-08-02 00:19:17 -07:00
compat.c	net: Fix references to out-of-scope variables in put_cmsg_compat()	2012-07-22 17:50:49 -07:00
Kconfig	net: drop NET dependency from HAVE_BPF_JIT	2012-05-21 12:50:12 -07:00
Makefile	econet: remove ancient bug ridden protocol	2012-05-18 01:35:08 -04:00
nonet.c
socket.c	net: netprio_cgroup: rework update socket logic	2012-07-22 12:44:01 -07:00
sysctl_net.c	net: delete all instances of special processing for token ring	2012-05-15 20:14:35 -04:00