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e95ae2f2cf
linux-kernel-test/net
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Neal Cardwell e95ae2f2cf tcp: use SACKs and DSACKs that arrive on ACKs below snd_una 
The bug: When the ACK field is below snd_una (which can happen when
ACKs are reordered), senders ignored DSACKs (preventing undo) and did
not call tcp_fastretrans_alert, so they did not increment
prr_delivered to reflect newly-SACKed sequence ranges, and did not
call tcp_xmit_retransmit_queue, thus passing up chances to send out
more retransmitted and new packets based on any newly-SACKed packets.

The change: When the ACK field is below snd_una (the "old_ack" goto
label), call tcp_fastretrans_alert to allow undo based on any
newly-arrived DSACKs and try to send out more packets based on
newly-SACKed packets.

Other patches in this series will provide other changes that are
necessary to fully fix this problem.

Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-27 18:54:09 -05:00
..
9p net/9p: Convert net/9p protocol dumps to tracepoints 2011-10-24 11:13:12 -05:00
802 net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
8021q net: introduce and use netdev_features_t for device features sets 2011-11-16 17:43:10 -05:00
appletalk net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
atm atm: eliminate atm_guess_pdu2truesize() 2011-11-26 16:40:30 -05:00
ax25 net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
batman-adv batman-adv: Fix range check for expected packets 2011-11-20 13:08:35 +01:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2011-11-17 13:11:43 -05:00
bridge net: remove ipv6_addr_copy() 2011-11-22 16:43:32 -05:00
caif caif: fix endian conversion in cffrml_transmit() 2011-11-21 16:46:24 -05:00
can can: remove references to berlios mailinglist 2011-10-17 19:22:46 -04:00
ceph net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
dcb net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
dccp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
dns_resolver
dsa dsa: Allow core and drivers to be built as modules 2011-11-26 14:48:16 -05:00
econet net: Remove all uses of LL_ALLOCATED_SPACE 2011-11-18 14:37:09 -05:00
ethernet net: don't clear IFF_XMIT_DST_RELEASE in ether_setup 2011-09-15 14:49:44 -04:00
ieee802154 net: Remove all uses of LL_ALLOCATED_SPACE 2011-11-18 14:37:09 -05:00
ipv4 tcp: use SACKs and DSACKs that arrive on ACKs below snd_una 2011-11-27 18:54:09 -05:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
ipx net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
irda irttp: Use kmemdup rather than duplicating its implementation 2011-11-21 15:02:17 -05:00
iucv net: more accurate skb truesize 2011-10-13 16:05:07 -04:00
key net: remove ipv6_addr_copy() 2011-11-22 16:43:32 -05:00
l2tp l2tp: fix l2tp_udp_recv_core() 2011-11-08 13:59:44 -05:00
lapb wan: make LAPB callbacks const 2011-09-16 19:20:20 -04:00
llc net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
netlabel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
netlink af_unix: dont send SCM_CREDENTIALS by default 2011-09-28 13:29:50 -04:00
netrom net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
nfc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2011-11-17 13:11:43 -05:00
packet packet: Add needed_tailroom to packet_sendmsg_spkt 2011-11-18 14:37:10 -05:00
phonet Phonet: set the pipe handle using setsockopt 2011-11-18 14:37:40 -05:00
rds rds: drop "select LLIST" 2011-11-14 00:10:50 -05:00
rfkill Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2011-11-17 13:11:43 -05:00
rose net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
rxrpc RxRPC: Use kmemdup rather than duplicating its implementation 2011-11-21 15:02:36 -05:00
sched net: new counter for tx_timeout errors in sysfs 2011-11-16 23:14:02 -05:00
sctp net: remove ipv6_addr_copy() 2011-11-22 16:43:32 -05:00
sunrpc net: remove ipv6_addr_copy() 2011-11-22 16:43:32 -05:00
tipc net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
unix af_unix: dont send SCM_CREDENTIALS by default 2011-09-28 13:29:50 -04:00
wanrouter wanrouter: Remove kernel_lock annotations 2011-11-07 13:27:30 -05:00
wimax net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
x25 Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2011-11-26 14:47:03 -05:00
compat.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00
Kconfig net: add network priority cgroup infrastructure (v4) 2011-11-22 15:22:23 -05:00
Makefile NFC: add nfc subsystem core 2011-07-05 15:26:57 -04:00
nonet.c
socket.c net: add network priority cgroup infrastructure (v4) 2011-11-22 15:22:23 -05:00
sysctl_net.c net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules 2011-10-31 19:30:30 -04:00