ipv4: Invalidate nexthop cache nh_saddr more correctly.
authorDavid S. Miller <davem@davemloft.net>
Fri, 25 Mar 2011 00:42:21 +0000 (17:42 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 25 Mar 2011 00:42:21 +0000 (17:42 -0700)
commit436c3b66ec9824a633724ae42de1c416af4f2063
tree8da6452386b6e900c4226c9b67694d1ea21e847e
parentf7594d42944c0dfca90318f50978a4bdf8504086
ipv4: Invalidate nexthop cache nh_saddr more correctly.

Any operation that:

1) Brings up an interface
2) Adds an IP address to an interface
3) Deletes an IP address from an interface

can potentially invalidate the nh_saddr value, requiring
it to be recomputed.

Perform the recomputation lazily using a generation ID.

Reported-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/ip_fib.h
include/net/netns/ipv4.h
net/ipv4/fib_frontend.c
net/ipv4/fib_semantics.c
net/ipv4/route.c