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linux/net/ipv4
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Hans Wippel bc58a1baf2 net/ipv4: disable SMC TCP option with SYN Cookies 
Currently, the SMC experimental TCP option in a SYN packet is lost on
the server side when SYN Cookies are active. However, the corresponding
SYNACK sent back to the client contains the SMC option. This causes an
inconsistent view of the SMC capabilities on the client and server.

This patch disables the SMC option in the SYNACK when SYN Cookies are
active to avoid this issue.

Fixes: 60e2a7780793b ("tcp: TCP experimental option for SMC")
Signed-off-by: Hans Wippel <hwippel@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-25 20:53:54 -04:00
..
netfilter
netfilter: nf_socket: Fix out of bounds access in nf_sk_lookup_slow_v{4,6}
2018-03-24 21:17:14 +01:00
af_inet.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
ah4.c
net: use -ENOSPC for transient busy indication
2017-11-03 22:11:17 +08:00
arp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-01-17 00:10:42 -05:00
cipso_ipv4.c
tcp/dccp: fix ireq->opt races
2017-10-21 01:33:19 +01:00
datagram.c
…
devinet.c
ipv4: Get the address of interface correctly.
2018-01-29 14:32:31 -05:00
esp4_offload.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-01-23 13:51:56 -05:00
esp4.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-01-17 00:10:42 -05:00
fib_frontend.c
ip_rt_ioctl(): take copyin to caller
2018-01-24 19:13:45 -05:00
fib_lookup.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fib_notifier.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fib_rules.c
net: fib_rules: Implement notification logic in core
2017-08-03 15:35:59 -07:00
fib_semantics.c
fib_semantics: Don't match route with mismatching tclassid
2018-02-16 15:19:54 -05:00
fib_trie.c
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
fou.c
gue: fix remcsum when GRO on and CHECKSUM_PARTIAL boundary is outer UDP
2017-08-01 16:09:14 -07:00
gre_demux.c
…
gre_offload.c
gso: fix payload length when gso_size is zero
2017-10-08 10:12:15 -07:00
icmp.c
ipv4: icmp: use BUG_ON instead of if condition followed by BUG
2017-10-24 18:44:42 +09:00
igmp.c
net: igmp: add a missing rcu locking section
2018-02-01 14:58:04 -05:00
inet_connection_sock.c
Revert "defer call to mem_cgroup_sk_alloc()"
2018-02-02 19:49:31 -05:00
inet_diag.c
sock_diag: request _diag module only when the family or proto has been registered
2018-03-12 11:03:42 -04:00
inet_fragment.c
net: Fix hlist corruptions in inet_evict_bucket()
2018-03-07 13:29:28 -05:00
inet_hashtables.c
inet: Avoid unitialized variable warning in inet_unhash()
2018-02-01 09:48:42 -05:00
inet_timewait_sock.c
net: Convert atomic_t net::count to refcount_t
2018-01-15 14:23:42 -05:00
inetpeer.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-10-05 18:19:22 -07:00
ip_forward.c
net: rename skb_gso_validate_mtu -> skb_gso_validate_network_len
2018-03-04 17:49:17 -05:00
ip_fragment.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-11-04 09:26:51 +09:00
ip_gre.c
ip_gre: fix IFLA_MTU ignored on NEWLINK
2018-02-27 14:36:27 -05:00
ip_input.c
IPv4: early demux can return an error code
2017-10-01 03:55:47 +01:00
ip_options.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ip_output.c
net: rename skb_gso_validate_mtu -> skb_gso_validate_network_len
2018-03-04 17:49:17 -05:00
ip_sockglue.c
net: Only honor ifindex in IP_PKTINFO if non-0
2018-03-06 16:36:44 -05:00
ip_tunnel_core.c
net: store port/representator id in metadata_dst
2017-06-25 11:42:01 -04:00
ip_tunnel.c
ip_tunnel: Emit events for post-register MTU changes
2018-03-23 12:54:34 -04:00
ip_vti.c
net: don't call update_pmtu unconditionally
2018-01-25 16:27:34 -05:00
ipcomp.c
…
ipconfig.c
ipconfig: use dev_set_mtu()
2018-01-24 19:13:45 -05:00
ipip.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-10-30 21:09:24 +09:00
ipmr.c
ipmr: Fix ptrdiff_t print formatting
2018-01-30 09:20:25 -05:00
Kconfig
ip: update policy routing config help
2017-10-12 22:57:11 -07:00
Makefile
net: tcp: Remove TCP probe module
2018-01-02 14:27:29 -05:00
netfilter.c
netfilter: remove struct nf_afinfo and its helper functions
2018-01-08 18:11:02 +01:00
ping.c
net: convert sock.sk_refcnt from atomic_t to refcount_t
2017-07-01 07:39:08 -07:00
proc.c
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
protocol.c
net: Add sysctl to toggle early demux for tcp and udp
2017-03-24 13:17:07 -07:00
raw_diag.c
net: ipv6: add second dif to raw socket lookups
2017-08-07 11:39:22 -07:00
raw.c
Currently, hardened usercopy performs dynamic bounds checking on slab
2018-02-03 16:25:42 -08:00
route.c
ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu
2018-03-14 13:37:36 -04:00
syncookies.c
net/ipv4: disable SMC TCP option with SYN Cookies
2018-03-25 20:53:54 -04:00
sysctl_net_ipv4.c
tcp: Namespace-ify sysctl_tcp_default_congestion_control
2017-11-15 14:09:52 +09:00
tcp_bbr.c
tcp_bbr: fix pacing_gain to always be unity when using lt_bw
2018-02-01 09:43:38 -05:00
tcp_bic.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_cdg.c
tcp: cdg: make struct tcp_cdg static
2017-10-16 21:24:25 +01:00
tcp_cong.c
tcp: Namespace-ify sysctl_tcp_default_congestion_control
2017-11-15 14:09:52 +09:00
tcp_cubic.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_dctcp.c
Revert "dctcp: update cwnd on congestion event"
2016-12-06 11:34:24 -05:00
tcp_diag.c
net: sock: replace sk_state_load with inet_sk_state_load and remove sk_state_store
2017-12-20 14:00:25 -05:00
tcp_fastopen.c
tcp: pause Fast Open globally after third consecutive timeout
2017-12-13 15:51:12 -05:00
tcp_highspeed.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_htcp.c
tcp: fix cwnd undo in Reno and HTCP congestion controls
2017-08-06 21:25:10 -07:00
tcp_hybla.c
tcp: make undo_cwnd mandatory for congestion modules
2016-11-21 13:20:17 -05:00
tcp_illinois.c
net/tcp/illinois: replace broken algorithm reference link
2018-02-28 12:03:47 -05:00
tcp_input.c
net/ipv4: disable SMC TCP option with SYN Cookies
2018-03-25 20:53:54 -04:00
tcp_ipv4.c
tcp: tracepoint: only call trace_tcp_send_reset with full socket
2018-02-07 22:00:42 -05:00
tcp_lp.c
tcp: switch TCP TS option (RFC 7323) to 1ms clock
2017-05-17 16:06:01 -04:00
tcp_metrics.c
net: Convert atomic_t net::count to refcount_t
2018-01-15 14:23:42 -05:00
tcp_minisocks.c
tcp/dccp: avoid one atomic operation for timewait hashdance
2017-12-13 14:33:10 -05:00
tcp_nv.c
tcp_nv: fix potential integer overflow in tcpnv_acked
2018-01-31 10:26:30 -05:00
tcp_offload.c
gso: validate gso_type in GSO handlers
2018-01-22 16:01:30 -05:00
tcp_output.c
tcp_bbr: better deal with suboptimal GSO
2018-02-22 14:15:23 -05:00
tcp_rate.c
tcp: invalidate rate samples during SACK reneging
2017-12-08 10:07:02 -05:00
tcp_recovery.c
tcp: evaluate packet losses upon RTT change
2017-12-08 14:14:11 -05:00
tcp_scalable.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_timer.c
tcp: purge write queue upon aborting the connection
2018-03-07 15:01:03 -05:00
tcp_ulp.c
net: add a UID to use for ULP socket assignment
2018-02-06 11:39:31 +01:00
tcp_vegas.c
tcp: fix under-evaluated ssthresh in TCP Vegas
2017-09-29 06:07:00 +01:00
tcp_vegas.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tcp_veno.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp_westwood.c
tcp: Revert "tcp: remove CA_ACK_SLOWPATH"
2017-08-30 11:20:08 -07:00
tcp_yeah.c
tcp: consolidate congestion control undo functions
2017-08-06 21:25:10 -07:00
tcp.c
tcp: purge write queue upon aborting the connection
2018-03-07 15:01:03 -05:00
tunnel4.c
…
udp_diag.c
net: ipv6: add second dif to udp socket lookups
2017-08-07 11:39:22 -07:00
udp_impl.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
udp_offload.c
gso: validate gso_type in GSO handlers
2018-01-22 16:01:30 -05:00
udp_tunnel.c
net: add infrastructure to un-offload UDP tunnel port
2017-07-24 13:52:59 -07:00
udp.c
udplite: fix partial checksum initialization
2018-02-16 15:57:42 -05:00
udplite.c
net: delete /proc THIS_MODULE references
2018-01-16 15:01:33 -05:00
xfrm4_input.c
xfrm: Reinject transport-mode packets through tasklet
2017-12-19 08:23:21 +01:00
xfrm4_mode_beet.c
networking: make skb_pull & friends return void pointers
2017-06-16 11:48:39 -04:00
xfrm4_mode_transport.c
xfrm: Add encapsulation header offsets while SKB is not encrypted
2017-04-14 10:07:39 +02:00
xfrm4_mode_tunnel.c
xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto
2018-03-07 10:54:29 +01:00
xfrm4_output.c
net: xfrm: use skb_gso_validate_network_len() to check gso sizes
2018-03-04 17:49:17 -05:00
xfrm4_policy.c
ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu
2018-03-14 13:37:36 -04:00
xfrm4_protocol.c
xfrm: input: constify xfrm_input_afinfo
2017-02-09 10:22:17 +01:00
xfrm4_state.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xfrm4_tunnel.c
…