Allow accepted sockets to derive their sk_bound_dev_if setting from the l3mdev domain in which the packets originated. This version adds a sysctl to control whether the setting is inherited, making the functionality similar to sk_mark and its sysctl_tcp_fwmark_accept setting.
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. v2 - Wrap the sk_bound_dev_if inheritance behavior in a new sysctl that defaults to disabled so a user has to opt-in David Ahern (2): net: l3mdev: Add master device lookup by index net: Allow accepted sockets to be bound to l3mdev domain Documentation/networking/ip-sysctl.txt | 7 +++++++ include/net/inet_sock.h | 12 ++++++++++++ include/net/l3mdev.h | 23 +++++++++++++++++++++++ include/net/netns/ipv4.h | 1 + net/ipv4/syncookies.c | 4 ++-- net/ipv4/sysctl_net_ipv4.c | 9 +++++++++ net/ipv4/tcp_input.c | 2 +- net/ipv4/tcp_ipv4.c | 1 + net/ipv6/syncookies.c | 4 ++-- 9 files changed, 58 insertions(+), 5 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
