tcp: TCP experimental option for SMC
authorUrsula Braun <ubraun@linux.vnet.ibm.com>
Wed, 25 Oct 2017 09:01:45 +0000 (11:01 +0200)
committerDavid S. Miller <davem@davemloft.net>
Thu, 26 Oct 2017 09:00:29 +0000 (18:00 +0900)
commit60e2a7780793bae0debc275a9ccd57f7da0cf195
tree8b65c6c4eb3194718df692952e1b5d547c53de2f
parent145686baab68e9c7594fe9269f47da479c25ad79
tcp: TCP experimental option for SMC

The SMC protocol [1] relies on the use of a new TCP experimental
option [2, 3]. With this option, SMC capabilities are exchanged
between peers during the TCP three way handshake. This patch adds
support for this experimental option to TCP.

References:
[1] SMC-R Informational RFC: http://www.rfc-editor.org/info/rfc7609
[2] Shared Use of TCP Experimental Options RFC 6994:
    https://tools.ietf.org/rfc/rfc6994.txt
[3] IANA ExID SMCR:
http://www.iana.org/assignments/tcp-parameters/tcp-parameters.xhtml#tcp-exids

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/tcp.h
include/net/inet_sock.h
include/net/tcp.h
net/ipv4/tcp.c
net/ipv4/tcp_input.c
net/ipv4/tcp_minisocks.c
net/ipv4/tcp_output.c