diff options
Diffstat (limited to 'net/core/neighbour.c')
| -rw-r--r-- | net/core/neighbour.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 8082cc6be4fc..96786016dbb4 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -55,7 +55,8 @@ static void __neigh_notify(struct neighbour *n, int type, int flags, u32 pid); static void neigh_update_notify(struct neighbour *neigh, u32 nlmsg_pid); static int pneigh_ifdown_and_unlock(struct neigh_table *tbl, - struct net_device *dev); + struct net_device *dev, + bool skip_perm); #ifdef CONFIG_PROC_FS static const struct seq_operations neigh_stat_seq_ops; @@ -444,7 +445,7 @@ static int __neigh_ifdown(struct neigh_table *tbl, struct net_device *dev, { write_lock_bh(&tbl->lock); neigh_flush_dev(tbl, dev, skip_perm); - pneigh_ifdown_and_unlock(tbl, dev); + pneigh_ifdown_and_unlock(tbl, dev, skip_perm); pneigh_queue_purge(&tbl->proxy_queue, dev ? dev_net(dev) : NULL, tbl->family); if (skb_queue_empty_lockless(&tbl->proxy_queue)) @@ -847,7 +848,8 @@ int pneigh_delete(struct neigh_table *tbl, struct net *net, const void *pkey, } static int pneigh_ifdown_and_unlock(struct neigh_table *tbl, - struct net_device *dev) + struct net_device *dev, + bool skip_perm) { struct pneigh_entry *n, **np, *freelist = NULL; u32 h; @@ -855,12 +857,15 @@ static int pneigh_ifdown_and_unlock(struct neigh_table *tbl, for (h = 0; h <= PNEIGH_HASHMASK; h++) { np = &tbl->phash_buckets[h]; while ((n = *np) != NULL) { + if (skip_perm && n->permanent) + goto skip; if (!dev || n->dev == dev) { *np = n->next; n->next = freelist; freelist = n; continue; } +skip: np = &n->next; } } @@ -2041,6 +2046,7 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, pn = pneigh_lookup(tbl, net, dst, dev, 1); if (pn) { pn->flags = ndm_flags; + pn->permanent = !!(ndm->ndm_state & NUD_PERMANENT); if (protocol) pn->protocol = protocol; err = 0; |