[IPV6]: V6 route events reported with wrong netlink PID and seq number

Essentially netlink at the moment always reports a pid and sequence of 0
always for v6 route activities. 
To understand the repurcassions of this look at:
http://lists.quagga.net/pipermail/quagga-dev/2005-June/003507.html

While fixing this, i took the liberty to resolve the outstanding issue
of IPV6 routes inserted via ioctls to have the correct pids as well.

This patch tries to behave as close as possible to the v4 routes i.e
maintains whatever PID the socket issuing the command owns as opposed to
the process. That made the patch a little bulky.

I have tested against both netlink derived utility to add/del routes as
well as ioctl derived one. The Quagga folks have tested against quagga.
This fixes the problem and so far hasnt been detected to introduce any
new issues.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 12 insertions, 6 deletions

diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 319904518194..a66e9de16a6c 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -167,14 +167,17 @@ extern int			fib6_walk_continue(struct fib6_walker_t *w);
 extern int                      fib6_add(struct fib6_node *root,
                                          struct rt6_info *rt,
                                          struct nlmsghdr *nlh,
-                                         void *rtattr);
+                                         void *rtattr,
+                                         struct netlink_skb_parms *req);
 
 extern int                      fib6_del(struct rt6_info *rt,
                                          struct nlmsghdr *nlh,
-                                         void *rtattr);
+                                         void *rtattr,
+                                         struct netlink_skb_parms *req);
 
 extern void                     inet6_rt_notify(int event, struct rt6_info *rt,
-                                                struct nlmsghdr *nlh);
+                                                struct nlmsghdr *nlh,
+                                                struct netlink_skb_parms *req);
 
 extern void                     fib6_run_gc(unsigned long dummy);
 
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index d5d1dd10cdb8..f920706d526b 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -41,13 +41,16 @@ extern int			ipv6_route_ioctl(unsigned int cmd, void __user *arg);
 
 extern int                      ip6_route_add(struct in6_rtmsg *rtmsg,
                                               struct nlmsghdr *,
-                                              void *rtattr);
+                                              void *rtattr,
+                                              struct netlink_skb_parms *req);
 extern int                      ip6_ins_rt(struct rt6_info *,
                                            struct nlmsghdr *,
-                                           void *rtattr);
+                                           void *rtattr,
+                                           struct netlink_skb_parms *req);
 extern int                      ip6_del_rt(struct rt6_info *,
                                            struct nlmsghdr *,
-                                           void *rtattr);
+                                           void *rtattr,
+                                           struct netlink_skb_parms *req);
 
 extern int                      ip6_rt_addr_add(struct in6_addr *addr,
                                                 struct net_device *dev,