linux/net
Neal Cardwell 4fb17a6091 tcp: mitigate ACK loops for connections as tcp_timewait_sock
Ensure that in state FIN_WAIT2 or TIME_WAIT, where the connection is
represented by a tcp_timewait_sock, we rate limit dupacks in response
to incoming packets (a) with TCP timestamps that fail PAWS checks, or
(b) with sequence 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.

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 01:03:13 -08:00
..
6lowpan
9p
802
8021q vlan: advertise link netns via netlink 2015-01-23 17:51:15 -08:00
appletalk
atm
ax25
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
dccp
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_timewait_sock 2015-02-08 01:03:13 -08:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-02-05 14:33:28 -08:00
ipx
irda irda: use msecs_to_jiffies for conversions 2015-01-30 18:08:25 -08:00
iucv
key
l2tp netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
lapb
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
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
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
xfrm netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
compat.c
Kconfig
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