Neal Cardwell f2b2c582e8 tcp: mitigate ACK loops for connections as tcp_sock ... Ensure that in state ESTABLISHED, where the connection is represented by a tcp_sock, we rate limit dupacks in response to incoming packets (a) with TCP timestamps that fail PAWS checks, or (b) with sequence numbers or ACK numbers that are out of the acceptable window. We do not send a dupack in response to out-of-window packets if it has been less than sysctl_tcp_invalid_ratelimit (default 500ms) since we last sent a dupack in response to an out-of-window packet. There is already a similar (although global) rate-limiting mechanism for "challenge ACKs". When deciding whether to send a challence ACK, we first consult the new per-connection rate limit, and then the global rate limit. Reported-by: Avery Fay <avery@mixpanel.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-02-08 01:03:12 -08:00
..
6lowpan	net/6lowpan: Remove FSF address from GPL statement.	2014-12-05 12:43:04 +01:00
9p
802
8021q	vlan: advertise link netns via netlink	2015-01-23 17:51:15 -08:00
appletalk	new helper: memcpy_from_msg()	2014-11-24 04:28:48 -05:00
atm	put iov_iter into msghdr	2014-12-09 16:29:03 -05:00
ax25	new helper: memcpy_from_msg()	2014-11-24 04:28:48 -05:00
batman-adv	batman-adv: Kconfig, Add missing DEBUG_FS dependency	2015-01-07 22:17:11 +01:00
bluetooth	Bluetooth: Fix potential NULL dereference	2015-02-03 09:02:12 +01:00
bridge	bridge: add missing bridge port check for offloads	2015-02-07 22:49:47 -08:00
caif	caif: remove wrong dev_net_set() call	2015-01-29 14:20:02 -08:00
can	netlink: make nlmsg_end() and genlmsg_end() void	2015-01-18 01:03:45 -05:00
ceph	libceph: fix sparse endianness warnings	2015-01-08 20:36:57 +03:00
core	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-02-05 14:33:28 -08:00
dcb	dcbnl : Disable software interrupts before taking dcb_lock	2014-11-16 14:50:52 -05:00
dccp	net: introduce helper macro for_each_cmsghdr	2014-12-10 22:41:55 -05:00
decnet	netlink: Fix bugs in nlmsg_end() conversions.	2015-01-18 23:36:08 -05:00
dns_resolver
dsa	net: dsa: set slave MII bus PHY mask	2015-01-25 16:00:54 -08:00
ethernet	net: Add Transparent Ethernet Bridging GRO support.	2015-01-02 15:46:41 -05:00
hsr
ieee802154	netlink: make nlmsg_end() and genlmsg_end() void	2015-01-18 01:03:45 -05:00
ipv4	tcp: mitigate ACK loops for connections as tcp_sock	2015-02-08 01:03:12 -08:00
ipv6	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-02-05 14:33:28 -08:00
ipx	switch ipxrtr_route_packet() from iovec to msghdr	2014-11-24 04:28:49 -05:00
irda	irda: use msecs_to_jiffies for conversions	2015-01-30 18:08:25 -08:00
iucv	net: introduce helper macro for_each_cmsghdr	2014-12-10 22:41:55 -05:00
key	new helper: memcpy_from_msg()	2014-11-24 04:28:48 -05:00
l2tp	netlink: make nlmsg_end() and genlmsg_end() void	2015-01-18 01:03:45 -05:00
lapb	lapb: move EXPORT_SYMBOL after functions.	2014-10-24 15:51:42 -04:00
llc	net: llc: use correct size for sysctl timeout entries	2015-01-25 00:23:21 -08:00
mac80211	Last round of updates for net-next:	2015-02-04 14:57:45 -08:00
mac802154	mac802154: fix kbuild test robot warning	2015-01-03 01:51:51 +01:00
mpls	net: mark some potential candidates __read_mostly	2015-01-30 17:58:39 -08:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-02-05 14:33:28 -08:00
netlabel	netlabel: Less function calls in netlbl_mgmt_add_common() after error detection	2015-02-03 16:22:13 -08:00
netlink	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-02-05 14:33:28 -08:00
netrom	new helper: memcpy_from_msg()	2014-11-24 04:28:48 -05:00
nfc	NFC: nci: Move NFCEE discovery logic	2015-02-04 09:15:18 +01:00
openvswitch	openvswitch: Initialize unmasked key and uid len	2015-02-08 00:51:14 -08:00
packet	netlink: make nlmsg_end() and genlmsg_end() void	2015-01-18 01:03:45 -05:00
phonet	phonet netlink: allow multiple messages per skb in route dump	2015-01-19 16:20:17 -05:00
rds	rds: Make rds_message_copy_from_user() return 0 on success.	2015-02-07 22:41:56 -08:00
rfkill	Last round of updates for net-next:	2015-02-04 14:57:45 -08:00
rose	new helper: memcpy_from_msg()	2014-11-24 04:28:48 -05:00
rxrpc	Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-02-04 20:46:55 -08:00
sched	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-02-05 14:33:28 -08:00
sctp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-02-05 14:33:28 -08:00
sunrpc	rpc: fix xdr_truncate_encode to handle buffer ending on page boundary	2015-01-07 14:03:58 -05:00
switchdev	swdevice: add new apis to set and del bridge port attributes	2015-02-01 23:16:34 -08:00
tipc	tipc: eliminate race condition at multicast reception	2015-02-05 16:00:03 -08:00
unix	net: remove sock_iocb	2015-01-28 23:15:07 -08:00
vmw_vsock	vmci: propagate msghdr all way down to __qp_memcpy_to_queue()	2015-02-04 01:34:14 -05:00
wimax
wireless	Last round of updates for net-next:	2015-02-04 14:57:45 -08:00
x25	new helper: memcpy_from_msg()	2014-11-24 04:28:48 -05:00
xfrm	netlink: make nlmsg_end() and genlmsg_end() void	2015-01-18 01:03:45 -05:00
compat.c	put iov_iter into msghdr	2014-12-09 16:29:03 -05:00
Kconfig	net: introduce generic switch devices support	2014-12-02 20:01:20 -08:00
Makefile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-12-16 15:53:03 -08:00
socket.c	net: switch sockets to ->read_iter/->write_iter	2015-02-04 01:34:15 -05:00
sysctl_net.c