]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
net: Allow accepted sockets to be bound to l3mdev domain
authorDavid Ahern <dsa@cumulusnetworks.com>
Wed, 16 Dec 2015 21:20:44 +0000 (13:20 -0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 18 Dec 2015 19:43:38 +0000 (14:43 -0500)
commit6dd9a14e92e54895e143f10fef4d0b9abe109aa9
treebb02bd14741b26fc9ba0abcaeb9a7f01a8339e68
parent1a8524794fc7c70f44ac28e3a6e8fd637bc41f14
net: Allow accepted sockets to be bound to l3mdev domain

Allow accepted sockets to derive their sk_bound_dev_if setting from the
l3mdev domain in which the packets originated. A sysctl setting is added
to control the behavior which is similar to sk_mark and
sysctl_tcp_fwmark_accept.

This effectively allow a process to have a "VRF-global" listen socket,
with child sockets bound to the VRF device in which the packet originated.
A similar behavior can be achieved using sk_mark, but a solution using marks
is incomplete as it does not handle duplicate addresses in different L3
domains/VRFs. Allowing sockets to inherit the sk_bound_dev_if from l3mdev
domain provides a complete solution.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Documentation/networking/ip-sysctl.txt
include/net/inet_sock.h
include/net/netns/ipv4.h
net/ipv4/syncookies.c
net/ipv4/sysctl_net_ipv4.c
net/ipv4/tcp_input.c
net/ipv4/tcp_ipv4.c
net/ipv6/syncookies.c