tree b44eafb94e7ea3bb32b4bb234746716cc5c535b2
parent 7ada7ca562714632d0fc9abb24e27cab67bdbf0d
author Roopa Prabhu <roopa@cumulusnetworks.com> 1489986088 -0700
committer David S. Miller <davem@davemloft.net> 1490204929 -0700

neighbour: fix nlmsg_pid in notifications

neigh notifications today carry pid 0 for nlmsg_pid
in all cases. This patch fixes it to carry calling process
pid when available. Applications (eg. quagga) rely on
nlmsg_pid to ignore notifications generated by their own
netlink operations. This patch follows the routing subsystem
which already sets this correctly.

Reported-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>