Eric Dumazet c867a11289 tcp: properly scale window in tcp_v[46]_reqsk_send_ack() ...

[ Upstream commit 20a2b49fc5 ]

When sending an ack in SYN_RECV state, we must scale the offered
window if wscale option was negotiated and accepted.

Tested:
 Following packetdrill test demonstrates the issue :

0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0

+0 bind(3, ..., ...) = 0
+0 listen(3, 1) = 0

// Establish a connection.
+0 < S 0:0(0) win 20000 <mss 1000,sackOK,wscale 7, nop, TS val 100 ecr 0>
+0 > S. 0:0(0) ack 1 win 28960 <mss 1460,sackOK, TS val 100 ecr 100, nop, wscale 7>

+0 < . 1:11(10) ack 1 win 156 <nop,nop,TS val 99 ecr 100>
// check that window is properly scaled !
+0 > . 1:1(0) ack 1 win 226 <nop,nop,TS val 200 ecr 100>

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>

2016-09-30 10:18:34 +02:00

..

netfilter

netfilter: x_tables: introduce and use xt_copy_counters_from_user

2016-06-24 10:18:24 -07:00

addrconf_core.c

ipv6: change ipv6_stub_impl.ipv6_dst_lookup to take net argument

2015-07-31 15:21:30 -07:00

addrconf.c

ipv6: addrconf: fix dev refcont leak when DAD failed

2016-09-24 10:07:42 +02:00

addrlabel.c

ipv6/addrlabel: fix ip6addrlbl_get()

2015-12-22 15:57:54 -05:00

af_inet6.c

net: add validation for the socket syscall protocol argument

2015-12-14 16:09:30 -05:00

ah6.c

ah6: fix error return code

2015-08-25 13:37:31 -07:00

anycast.c

ipv6: coding style: comparison for equality with NULL

2015-03-31 13:51:54 -04:00

datagram.c

ipv6/udp: use sticky pktinfo egress ifindex on connect()

2016-03-03 15:07:05 -08:00

esp6.c

esp6: Switch to new AEAD interface

2015-05-28 11:23:20 +08:00

exthdrs_core.c

ipv6: re-enable fragment header matching in ipv6_find_hdr

2016-04-20 15:41:59 +09:00

exthdrs_offload.c

ipv6: fix exthdrs offload registration in out_rt path

2015-09-02 15:31:00 -07:00

exthdrs.c

ipv6: add complete rcu protection around np->opt

2015-12-02 23:37:16 -05:00

fib6_rules.c

ipv6: fix the incorrect return value of throw route

2015-10-23 02:38:18 -07:00

icmp.c

ipv6: kill sk_dst_lock

2015-12-03 11:32:06 -05:00

ila.c

dst: Pass net into dst->output

2015-10-08 04:27:03 -07:00

inet6_connection_sock.c

ipv6: kill sk_dst_lock

2015-12-03 11:32:06 -05:00

inet6_hashtables.c

net: SO_INCOMING_CPU setsockopt() support

2015-10-12 19:28:20 -07:00

ip6_checksum.c

udp: Generic functions to set checksum

2014-06-04 22:46:38 -07:00

ip6_fib.c

ipv6: Fix mem leak in rt6i_pcpu

2016-07-27 09:47:31 -07:00

ip6_flowlabel.c

ipv6: fix a lockdep splat

2016-03-03 15:07:05 -08:00

ip6_gre.c

tunnel: Clear IPCB(skb)->opt before dst_link_failure called

2016-04-20 15:41:56 +09:00

ip6_icmp.c

ipv6: White-space cleansing : Line Layouts

2014-08-24 22:37:52 -07:00

ip6_input.c

netfilter: Pass net into okfn

2015-09-17 17:18:37 -07:00

ip6_offload.c

ipv6: gro: support sit protocol

2015-10-21 19:36:11 -07:00

ip6_offload.h

…

ip6_output.c

ipv6: Skip XFRM lookup if dst_entry in socket cache is valid

2016-06-24 10:18:17 -07:00

ip6_tunnel.c

ip6_tunnel: set rtnl_link_ops before calling register_netdevice

2016-04-20 15:42:06 +09:00

ip6_udp_tunnel.c

vxlan: do not receive IPv4 packets on IPv6 socket

2015-08-29 13:07:54 -07:00

ip6_vti.c

net: Pass net into dst_output and remove dst_output_okfn

2015-10-08 04:26:54 -07:00

ip6mr.c

ipmr/ip6mr: Initialize the last assert time of mfc entries.

2016-07-11 09:31:11 -07:00

ipcomp6.c

ipv6: White-space cleansing : Structure layouts

2014-08-24 22:37:52 -07:00

ipv6_sockglue.c

ipv6: add complete rcu protection around np->opt

2015-12-02 23:37:16 -05:00

Kconfig

net: Identifier Locator Addressing module

2015-08-17 21:33:06 -07:00

Makefile

net: Identifier Locator Addressing module

2015-08-17 21:33:06 -07:00

mcast_snoop.c

net: fix wrong skb_get() usage / crash in IGMP/MLD parsing code

2015-08-13 17:08:39 -07:00

mcast.c

mld, igmp: Fix reserved tailroom calculation

2016-04-20 15:41:58 +09:00

mip6.c

ipv6: use ktime_t for internal timestamps

2015-10-05 03:16:47 -07:00

ndisc.c

ipv6: honor ifindex in case we receive ll addresses in router advertisements

2015-12-23 22:03:54 -05:00

netfilter.c

ipv6: Pass struct net into ip6_route_me_harder

2015-09-29 20:21:32 +02:00

output_core.c

ipv4, ipv6: Pass net into ip_local_out and ip6_local_out

2015-10-08 04:27:02 -07:00

ping.c

ipv6: release dst in ping_v6_sendmsg

2016-09-30 10:18:34 +02:00

proc.c

udp: Increment UDP_MIB_IGNOREDMULTI for arriving unmatched multicasts

2014-11-07 15:45:50 -05:00

protocol.c

net: Export inet_offloads and inet6_offloads

2014-09-19 17:15:31 -04:00

raw.c

ipv6: add complete rcu protection around np->opt

2015-12-02 23:37:16 -05:00

reassembly.c

net: use skb_postpush_rcsum instead of own implementations

2016-05-18 17:06:36 -07:00

route.c

net/route: enforce hoplimit max value

2016-05-18 17:06:43 -07:00

sit.c

sit: correct IP protocol used in ipip6_err

2016-07-11 09:31:11 -07:00

syncookies.c

ipv6: add complete rcu protection around np->opt

2015-12-02 23:37:16 -05:00

sysctl_net_ipv6.c

ipv6: Implement different admin modes for automatic flow labels

2015-07-31 17:07:11 -07:00

tcp_ipv6.c

tcp: properly scale window in tcp_v[46]_reqsk_send_ack()

2016-09-30 10:18:34 +02:00

tcpv6_offload.c

tcp: cleanup static functions

2015-02-28 16:56:51 -05:00

tunnel6.c

ipv6: fix tunnel error handling

2015-11-03 10:52:13 -05:00

udp_impl.h

net: Remove iocb argument from sendmsg and recvmsg

2015-03-02 13:06:31 -05:00

udp_offload.c

ipv6: hash net ptr into fragmentation bucket selection

2015-03-25 14:07:04 -04:00

udp.c

udp: properly support MSG_PEEK with truncated buffers

2016-09-15 08:27:49 +02:00

udplite.c

net: Eliminate no_check from protosw

2014-05-23 16:28:53 -04:00

xfrm6_input.c

netfilter: Pass struct net into the netfilter hooks

2015-09-17 17:18:37 -07:00

xfrm6_mode_beet.c

xfrm: simplify xfrm_address_t use

2015-03-31 13:58:35 -04:00

xfrm6_mode_ro.c

ipv4/ipv6: Fix FSF address in file headers

2013-12-06 12:37:56 -05:00

xfrm6_mode_transport.c

…

xfrm6_mode_tunnel.c

ipv6: update skb->csum when CE mark is propagated

2016-01-31 11:29:01 -08:00

xfrm6_output.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2015-10-24 06:54:12 -07:00

xfrm6_policy.c

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec

2015-12-22 16:26:31 -05:00

xfrm6_protocol.c

xfrm6: Properly handle unsupported protocols

2014-05-06 07:08:38 +02:00

xfrm6_state.c

ipv6: White-space cleansing : Line Layouts

2014-08-24 22:37:52 -07:00

xfrm6_tunnel.c

ipv6: White-space cleansing : gaps between function and symbol export

2014-08-24 22:37:52 -07:00