diff options
Diffstat (limited to 'net/core/neighbour.c')
| -rw-r--r-- | net/core/neighbour.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index dc1389b8beb1..69c41cb3966d 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -232,7 +232,8 @@ static void pneigh_queue_purge(struct sk_buff_head *list) } } -static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev) +static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev, + bool skip_perm) { int i; struct neigh_hash_table *nht; @@ -250,6 +251,10 @@ static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev) np = &n->next; continue; } + if (skip_perm && n->nud_state & NUD_PERMANENT) { + np = &n->next; + continue; + } rcu_assign_pointer(*np, rcu_dereference_protected(n->next, lockdep_is_held(&tbl->lock))); @@ -285,21 +290,35 @@ static void neigh_flush_dev(struct neigh_table *tbl, struct net_device *dev) void neigh_changeaddr(struct neigh_table *tbl, struct net_device *dev) { write_lock_bh(&tbl->lock); - neigh_flush_dev(tbl, dev); + neigh_flush_dev(tbl, dev, false); write_unlock_bh(&tbl->lock); } EXPORT_SYMBOL(neigh_changeaddr); -int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev) +static int __neigh_ifdown(struct neigh_table *tbl, struct net_device *dev, + bool skip_perm) { write_lock_bh(&tbl->lock); - neigh_flush_dev(tbl, dev); + neigh_flush_dev(tbl, dev, skip_perm); pneigh_ifdown_and_unlock(tbl, dev); del_timer_sync(&tbl->proxy_timer); pneigh_queue_purge(&tbl->proxy_queue); return 0; } + +int neigh_carrier_down(struct neigh_table *tbl, struct net_device *dev) +{ + __neigh_ifdown(tbl, dev, true); + return 0; +} +EXPORT_SYMBOL(neigh_carrier_down); + +int neigh_ifdown(struct neigh_table *tbl, struct net_device *dev) +{ + __neigh_ifdown(tbl, dev, false); + return 0; +} EXPORT_SYMBOL(neigh_ifdown); static struct neighbour *neigh_alloc(struct neigh_table *tbl, struct net_device *dev) |