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linux/net/ipv4
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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
af_inet.c
net: add validation for the socket syscall protocol argument
2015-12-14 16:09:30 -05:00
ah4.c
ah4: Fix error return in ah_input().
2015-08-25 13:38:50 -07:00
arp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-10-20 06:08:27 -07:00
cipso_ipv4.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
datagram.c
net: Set sk_txhash from a random number
2015-07-29 22:44:04 -07:00
devinet.c
ipv4: Don't do expensive useless work during inetdev destroy.
2016-04-20 15:42:03 +09:00
esp4.c
esp: Fix ESN generation under UDP encapsulation
2016-07-11 09:31:11 -07:00
fib_frontend.c
ipv4/fib: don't warn when primary address is missing if in_dev is dead
2016-05-18 17:06:36 -07:00
fib_lookup.h
ipv4: consider TOS in fib_select_default
2015-07-24 22:46:11 -07:00
fib_rules.c
net: ipv6: use common fib_default_rule_pref
2015-09-09 14:19:50 -07:00
fib_semantics.c
ipv4: reject RTNH_F_DEAD and RTNH_F_LINKDOWN from user space
2016-08-16 09:30:47 +02:00
fib_trie.c
ipv4: panic in leaf_walk_rcu due to stale node pointer
2016-09-30 10:18:34 +02:00
fou.c
fou: clean up socket with kfree_rcu
2015-12-16 19:03:02 -05:00
gre_demux.c
gre: Remove support for sharing GRE protocol hook.
2015-08-10 14:03:54 -07:00
gre_offload.c
ipv6: gre: support SIT encapsulation
2015-10-26 22:01:18 -07:00
icmp.c
Revert "ipv4/icmp: redirect messages can use the ingress daddr as source"
2015-10-14 06:01:07 -07:00
igmp.c
mld, igmp: Fix reserved tailroom calculation
2016-04-20 15:41:58 +09:00
inet_connection_sock.c
tcp/dccp: fix another race at listener dismantle
2016-03-03 15:07:07 -08:00
inet_diag.c
tcp/dccp: install syn_recv requests into ehash table
2015-10-03 04:32:41 -07:00
inet_fragment.c
net: fix percpu memory leaks
2015-11-02 22:47:14 -05:00
inet_hashtables.c
tcp/dccp: fix hashdance race for passive sessions
2015-10-23 05:42:21 -07:00
inet_lro.c
lro: remove dead code
2013-12-29 16:34:25 -05:00
inet_timewait_sock.c
tcp/dccp: fix timewait races in timer handling
2015-09-21 16:32:29 -07:00
inetpeer.c
net: Add helper function to compare inetpeer addresses
2015-08-28 13:32:36 -07:00
ip_forward.c
net: Pass net into dst_output and remove dst_output_okfn
2015-10-08 04:26:54 -07:00
ip_fragment.c
inet: frag: Always orphan skbs inside ip_defrag()
2016-03-03 15:07:04 -08:00
ip_gre.c
vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices
2016-06-24 10:18:18 -07:00
ip_input.c
ipv4: Pass struct net into ip_defrag and ip_check_defrag
2015-10-12 19:44:16 -07:00
ip_options.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
ip_output.c
ipv4: only create late gso-skb if skb is already set up with CHECKSUM_PARTIAL
2016-04-20 15:41:57 +09:00
ip_sockglue.c
ipv4: fix memory leaks in ip_cmsg_send() callers
2016-03-03 15:07:06 -08:00
ip_tunnel_core.c
ipv4, ipv6: Pass net into ip_local_out and ip6_local_out
2015-10-08 04:27:02 -07:00
ip_tunnel.c
vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices
2016-06-24 10:18:18 -07:00
ip_vti.c
net: Pass net into dst_output and remove dst_output_okfn
2015-10-08 04:26:54 -07:00
ipcomp.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
ipconfig.c
ipconfig: send Client-identifier in DHCP requests
2015-10-18 19:23:52 -07:00
ipip.c
ipip: ioctl: Remove superfluous IP-TTL handling.
2015-12-18 16:07:59 -05:00
ipmr.c
ipmr/ip6mr: Initialize the last assert time of mfc entries.
2016-07-11 09:31:11 -07:00
Kconfig
geneve: Consolidate Geneve functionality in single module.
2015-08-27 15:42:48 -07:00
Makefile
tcp: track the packet timings in RACK
2015-10-21 07:00:48 -07:00
netfilter.c
ipv4: Pass struct net into ip_route_me_harder
2015-09-29 20:21:32 +02:00
ping.c
ipv4: fix memory leaks in ip_cmsg_send() callers
2016-03-03 15:07:06 -08:00
proc.c
net: track success and failure of TCP PMTU probing
2015-07-21 22:36:33 -07:00
protocol.c
net: Export inet_offloads and inet6_offloads
2014-09-19 17:15:31 -04:00
raw.c
ipv4: fix memory leaks in ip_cmsg_send() callers
2016-03-03 15:07:06 -08:00
route.c
route: do not cache fib route info on local routes with oif
2016-05-18 17:06:35 -07:00
syncookies.c
tcp/dccp: fix hashdance race for passive sessions
2015-10-23 05:42:21 -07:00
sysctl_net_ipv4.c
ipv4: disable BH when changing ip local port range
2015-11-04 21:29:06 -05:00
tcp_bic.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_cdg.c
tcp: do not slow start when cwnd equals ssthresh
2015-07-09 14:22:52 -07:00
tcp_cong.c
tcp: remove tcp_ecn_make_synack() socket argument
2015-09-25 13:00:38 -07:00
tcp_cubic.c
tcp_cubic: do not set epoch_start in the future
2015-09-17 22:35:07 -07:00
tcp_dctcp.c
tcp: allow dctcp alpha to drop to zero
2015-10-23 02:46:52 -07:00
tcp_diag.c
tcp: ensure proper barriers in lockless contexts
2015-11-15 18:36:38 -05:00
tcp_fastopen.c
tcp/dccp: fix hashdance race for passive sessions
2015-10-23 05:42:21 -07:00
tcp_highspeed.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_htcp.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_hybla.c
tcp: do not slow start when cwnd equals ssthresh
2015-07-09 14:22:52 -07:00
tcp_illinois.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_input.c
tcp: enable per-socket rate limiting of all 'challenge acks'
2016-08-16 09:30:47 +02:00
tcp_ipv4.c
tcp: properly scale window in tcp_v[46]_reqsk_send_ack()
2016-09-30 10:18:34 +02:00
tcp_lp.c
tcp: remove in_flight parameter from cong_avoid() methods
2014-05-03 19:23:07 -04:00
tcp_memcontrol.c
memcg: cleanup static keys decrement
2015-02-12 18:54:10 -08:00
tcp_metrics.c
tcp: convert cached rtt from usec to jiffies when feeding initial rto
2016-04-20 15:41:56 +09:00
tcp_minisocks.c
tcp: fix tcpi_segs_in after connection establishment
2016-04-20 15:42:00 +09:00
tcp_offload.c
tcp: reserve tcp_skb_mss() to tcp stack
2015-06-11 16:33:10 -07:00
tcp_output.c
tcp: consider recv buf for the initial window scale
2016-08-16 09:30:48 +02:00
tcp_probe.c
tcp: whitespace fixes
2014-09-01 18:12:45 -07:00
tcp_recovery.c
tcp: use RACK to detect losses
2015-10-21 07:00:53 -07:00
tcp_scalable.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_timer.c
tcp: fix Fast Open snmp over-counting bug
2015-11-20 10:51:12 -05:00
tcp_vegas.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_vegas.h
tcp: prepare CC get_info() access from getsockopt()
2015-04-29 17:10:38 -04:00
tcp_veno.c
tcp: add tcp_in_slow_start helper
2015-07-09 14:22:52 -07:00
tcp_westwood.c
tcp_westwood: fix tcp_westwood_info()
2015-05-05 19:50:09 -04:00
tcp_yeah.c
tcp: cwnd does not increase in TCP YeAH
2016-09-30 10:18:34 +02:00
tcp.c
net:Add sysctl_max_skb_frags
2016-03-03 15:07:05 -08:00
tunnel4.c
net: Convert printks to pr_<level>
2012-03-11 23:42:51 -07:00
udp_diag.c
sock_diag: specify info_size per inet protocol
2015-06-15 19:49:22 -07:00
udp_impl.h
net: Remove iocb argument from sendmsg and recvmsg
2015-03-02 13:06:31 -05:00
udp_offload.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
udp_tunnel.c
tunnel: Clear IPCB(skb)->opt before dst_link_failure called
2016-04-20 15:41:56 +09:00
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
xfrm4_input.c
netfilter: Pass net into okfn
2015-09-17 17:18:37 -07:00
xfrm4_mode_beet.c
ipv4: ERROR: code indent should use tabs where possible
2013-12-26 13:43:21 -05:00
xfrm4_mode_transport.c
[IPSEC]: Use IPv6 calling convention as the convention for x->mode->output
2007-10-10 16:55:54 -07:00
xfrm4_mode_tunnel.c
ipv4: hash net ptr into fragmentation bucket selection
2015-03-25 14:07:04 -04:00
xfrm4_output.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-10-24 06:54:12 -07:00
xfrm4_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
xfrm4_protocol.c
xfrm4: Remove duplicate semicolon
2014-06-30 07:49:47 +02:00
xfrm4_state.c
inet: make no_pmtu_disc per namespace and kill ipv4_config
2013-12-18 16:58:20 -05:00
xfrm4_tunnel.c
sit: add IPv4 over IPv4 support
2013-05-31 17:19:05 -07:00