[NET]: Core net changes to generate netevents

Generate netevents for:
- neighbour changes
- routing redirects
- pmtu changes

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 2dc6dbb28467..19bd49d69d9f 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -104,6 +104,7 @@
 #include <net/icmp.h>
 #include <net/xfrm.h>
 #include <net/ip_mp_alg.h>
+#include <net/netevent.h>
 #ifdef CONFIG_SYSCTL
 #include <linux/sysctl.h>
 #endif
@@ -1125,6 +1126,7 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
         struct rtable *rth, **rthp;
         u32  skeys[2] = { saddr, 0 };
         int  ikeys[2] = { dev->ifindex, 0 };
+        struct netevent_redirect netevent;
 
         if (!in_dev)
                 return;
@@ -1216,6 +1218,11 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
                                         rt_drop(rt);
                                         goto do_next;
                                 }
+                                
+                                netevent.old = &rth->u.dst;
+                                netevent.new = &rt->u.dst;
+                                call_netevent_notifiers(NETEVENT_REDIRECT, 
+                                                        &netevent);
 
                                 rt_del(hash, rth);
                                 if (!rt_intern_hash(hash, rt, &rt))
@@ -1452,6 +1459,7 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
                 }
                 dst->metrics[RTAX_MTU-1] = mtu;
                 dst_set_expires(dst, ip_rt_mtu_expires);
+                call_netevent_notifiers(NETEVENT_PMTU_UPDATE, dst);
         }
 }