ipv6: keep track of routes using src
authorPaolo Abeni <pabeni@redhat.com>
Wed, 20 Nov 2019 12:47:34 +0000 (13:47 +0100)
committerDavid S. Miller <davem@davemloft.net>
Thu, 21 Nov 2019 22:45:55 +0000 (14:45 -0800)
commitb9b33e7c24af1cddc7697056f1664279a40d9a4a
tree0bd274edeababf25ed5d1c9d76b180984e787afa
parent1f8ac5703037fdd2e6c960cd35c2b14d18ef3933
ipv6: keep track of routes using src

Use a per namespace counter, increment it on successful creation
of any route using the source address, decrement it on deletion
of such routes.

This allows us to check easily if the routing decision in the
current namespace depends on the packet source. Will be used
by the next patch.

Suggested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/ip6_fib.h
include/net/netns/ipv6.h
net/ipv6/ip6_fib.c
net/ipv6/route.c