linux/include
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
..
acpi ACPI / processor: Convert apic_id to phys_id to make it arch agnostic 2015-01-05 23:32:42 +01:00
asm-generic mm: mmu_gather: use tlb->end != 0 only for TLB invalidation 2015-01-13 15:20:40 +13:00
clocksource time: move the timecounter/cyclecounter code into its own file. 2014-12-30 18:29:25 -05:00
crypto crypto: switch af_alg_make_sg() to iov_iter 2015-02-04 01:34:15 -05:00
drm Revert "drm/gem: Warn on illegal use of the dumb buffer interface v2" 2014-12-24 13:13:22 +10:00
dt-bindings Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-01-27 16:59:56 -08:00
keys
kvm arm/arm64: KVM: Require in-kernel vgic for the arch timers 2014-12-15 11:50:42 +01:00
linux tcp: mitigate ACK loops for connections as tcp_timewait_sock 2015-02-08 01:03:13 -08:00
math-emu
media
memory
misc
net tcp: mitigate ACK loops for connections as tcp_request_sock 2015-02-08 01:03:12 -08:00
pcmcia
ras
rdma IB/core: Implement support for MMU notifiers regarding on demand paging regions 2014-12-15 18:13:36 -08:00
rxrpc
scsi SCSI for-linus on 20141220 2014-12-20 13:42:57 -08:00
soc
sound ALSA: pcm: Fix kerneldoc for params_*() functions 2014-12-30 16:41:11 +01:00
target target: Drop left-over fabric_max_sectors attribute 2015-01-09 15:22:05 -08:00
trace Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-01-27 16:59:56 -08:00
uapi tcp: helpers to mitigate ACK loops by rate-limiting out-of-window dupacks 2015-02-08 01:03:12 -08:00
video
xen Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-01-15 00:53:17 -05:00
Kbuild