ipv4: Invalidate nexthop cache nh_saddr more correctly.

[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / net / ipv4 / fib_semantics.c

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 75b9fb5d5d37b432f862135b1ee136594dea02ba..2d4bebca671a15185b7b557b952827e7e82aebb0 100644 (file)
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -695,6 +695,16 @@ static void fib_info_hash_move(struct hlist_head *new_info_hash,
        fib_info_hash_free(old_laddrhash, bytes);
 }
 
+__be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh)
+{
+       nh->nh_saddr = inet_select_addr(nh->nh_dev,
+                                       nh->nh_gw,
+                                       nh->nh_cfg_scope);
+       nh->nh_saddr_genid = atomic_read(&net->ipv4.dev_addr_genid);
+
+       return nh->nh_saddr;
+}
+
 struct fib_info *fib_create_info(struct fib_config *cfg)
 {
        int err;
@@ -855,9 +865,7 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
 
        change_nexthops(fi) {
                nexthop_nh->nh_cfg_scope = cfg->fc_scope;
-               nexthop_nh->nh_saddr = inet_select_addr(nexthop_nh->nh_dev,
-                                                       nexthop_nh->nh_gw,
-                                                       nexthop_nh->nh_cfg_scope);
+               fib_info_update_nh_saddr(net, nexthop_nh);
        } endfor_nexthops(fi)
 
 link_it:
@@ -1128,24 +1136,6 @@ out:
        return;
 }
 
-void fib_update_nh_saddrs(struct net_device *dev)
-{
-       struct hlist_head *head;
-       struct hlist_node *node;
-       struct fib_nh *nh;
-       unsigned int hash;
-
-       hash = fib_devindex_hashfn(dev->ifindex);
-       head = &fib_info_devhash[hash];
-       hlist_for_each_entry(nh, node, head, nh_hash) {
-               if (nh->nh_dev != dev)
-                       continue;
-               nh->nh_saddr = inet_select_addr(nh->nh_dev,
-                                               nh->nh_gw,
-                                               nh->nh_cfg_scope);
-       }
-}
-
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 
 /*