Bhaskar Dutta 723884339f sctp: Sysctl configuration for IPv4 Address Scoping ... This patch introduces a new sysctl option to make IPv4 Address Scoping configurable <draft-stewart-tsvwg-sctp-ipv4-00.txt>. In networking environments where DNAT rules in iptables prerouting chains convert destination IP's to link-local/private IP addresses, SCTP connections fail to establish as the INIT chunk is dropped by the kernel due to address scope match failure. For example to support overlapping IP addresses (same IP address with different vlan id) a Layer-5 application listens on link local IP's, and there is a DNAT rule that maps the destination IP to a link local IP. Such applications never get the SCTP INIT if the address-scoping draft is strictly followed. This sysctl configuration allows SCTP to function in such unconventional networking environments. Sysctl options: 0 - Disable IPv4 address scoping draft altogether 1 - Enable IPv4 address scoping (default, current behavior) 2 - Enable address scoping but allow IPv4 private addresses in init/init-ack 3 - Enable address scoping but allow IPv4 link local address in init/init-ack Signed-off-by: Bhaskar Dutta <bhaskar.dutta@globallogic.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>		2009-09-04 18:21:01 -04:00
..
auth.h
checksum.h
command.h	sctp: Send user messages to the lower layer as one	2009-09-04 18:20:57 -04:00
constants.h	sctp: Sysctl configuration for IPv4 Address Scoping	2009-09-04 18:21:01 -04:00
sctp.h	sctp: Fix SCTP_MAXSEG socket option to comply to spec.	2009-09-04 18:21:00 -04:00
sm.h
structs.h	sctp: Sysctl configuration for IPv4 Address Scoping	2009-09-04 18:21:01 -04:00
tsnmap.h
ulpevent.h
ulpqueue.h
user.h	sctp: remove unused union (sctp_cmsg_data_t) definition	2009-09-04 18:20:55 -04:00