2 files changed, 27 insertions, 4 deletions

diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index d572d5376319..df0cdd41085c 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -839,6 +839,7 @@ enum
 #define RTMGRP_IPV4_IFADDR      0x10
 #define RTMGRP_IPV4_MROUTE      0x20
 #define RTMGRP_IPV4_ROUTE       0x40
+#define RTMGRP_IPV4_RULE        0x80
 
 #define RTMGRP_IPV6_IFADDR      0x100
 #define RTMGRP_IPV6_MROUTE      0x200
@@ -869,7 +870,8 @@ enum rtnetlink_groups {
 #define RTNLGRP_IPV4_MROUTE     RTNLGRP_IPV4_MROUTE
         RTNLGRP_IPV4_ROUTE,
 #define RTNLGRP_IPV4_ROUTE      RTNLGRP_IPV4_ROUTE
-        RTNLGRP_NOP1,
+        RTNLGRP_IPV4_RULE,
+#define RTNLGRP_IPV4_RULE       RTNLGRP_IPV4_RULE
         RTNLGRP_IPV6_IFADDR,
 #define RTNLGRP_IPV6_IFADDR     RTNLGRP_IPV6_IFADDR
         RTNLGRP_IPV6_MROUTE,
diff --git a/net/ipv4/fib_rules.c b/net/ipv4/fib_rules.c
index 768e8f5d7daa..ec566f3e66c7 100644
--- a/net/ipv4/fib_rules.c
+++ b/net/ipv4/fib_rules.c
@@ -104,6 +104,8 @@ static struct hlist_head fib_rules;
 
 /* writer func called from netlink -- rtnl_sem hold*/
 
+static void rtmsg_rule(int, struct fib_rule *);
+
 int inet_rtm_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 {
         struct rtattr **rta = arg;
@@ -131,6 +133,7 @@ int inet_rtm_delrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 
                         hlist_del_rcu(&r->hlist);
                         r->r_dead = 1;
+                        rtmsg_rule(RTM_DELRULE, r);
                         fib_rule_put(r);
                         err = 0;
                         break;
@@ -253,6 +256,7 @@ int inet_rtm_newrule(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
         else
                 hlist_add_before_rcu(&new_r->hlist, &r->hlist);
 
+        rtmsg_rule(RTM_NEWRULE, new_r);
         return 0;
 }
 
@@ -382,14 +386,14 @@ static struct notifier_block fib_rules_notifier = {
 
 static __inline__ int inet_fill_rule(struct sk_buff *skb,
                                      struct fib_rule *r,
-                                     struct netlink_callback *cb,
+                                     u32 pid, u32 seq, int event,
                                      unsigned int flags)
 {
         struct rtmsg *rtm;
         struct nlmsghdr  *nlh;
         unsigned char    *b = skb->tail;
 
-        nlh = NLMSG_NEW_ANSWER(skb, cb, RTM_NEWRULE, sizeof(*rtm), flags);
+        nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*rtm), flags);
         rtm = NLMSG_DATA(nlh);
         rtm->rtm_family = AF_INET;
         rtm->rtm_dst_len = r->r_dst_len;
@@ -430,6 +434,21 @@ rtattr_failure:
 
 /* callers should hold rtnl semaphore */
 
+static void rtmsg_rule(int event, struct fib_rule *r)
+{
+        int size = NLMSG_SPACE(sizeof(struct rtmsg) + 128);
+        struct sk_buff *skb = alloc_skb(size, GFP_KERNEL);
+
+        if (!skb)
+                netlink_set_err(rtnl, 0, RTNLGRP_IPV4_RULE, ENOBUFS);
+        else if (inet_fill_rule(skb, r, 0, 0, event, 0) < 0) {
+                kfree_skb(skb);
+                netlink_set_err(rtnl, 0, RTNLGRP_IPV4_RULE, EINVAL);
+        } else {
+                netlink_broadcast(rtnl, skb, 0, RTNLGRP_IPV4_RULE, GFP_KERNEL);
+        }
+}
+
 int inet_dump_rules(struct sk_buff *skb, struct netlink_callback *cb)
 {
         int idx = 0;
@@ -442,7 +461,9 @@ int inet_dump_rules(struct sk_buff *skb, struct netlink_callback *cb)
 
                 if (idx < s_idx)
                         continue;
-                if (inet_fill_rule(skb, r, cb, NLM_F_MULTI) < 0)
+                if (inet_fill_rule(skb, r, NETLINK_CB(cb->skb).pid,
+                                   cb->nlh->nlmsg_seq,
+                                   RTM_NEWRULE, NLM_F_MULTI) < 0)
                         break;
                 idx++;
         }