diff options
| -rw-r--r-- | include/net/ip_fib.h | 2 | ||||
| -rw-r--r-- | net/ipv4/fib_trie.c | 72 |
2 files changed, 74 insertions, 0 deletions
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index d0e28f4ab099..ec6496c08f48 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -150,6 +150,7 @@ struct fib_info { #define fib_advmss fib_metrics->metrics[RTAX_ADVMSS-1] int fib_nhs; bool fib_nh_is_v6; + bool nh_updated; struct rcu_head rcu; struct fib_nh fib_nh[0]; #define fib_dev fib_nh[0].fib_nh_dev @@ -231,6 +232,7 @@ int call_fib4_notifiers(struct net *net, enum fib_event_type event_type, int __net_init fib4_notifier_init(struct net *net); void __net_exit fib4_notifier_exit(struct net *net); +void fib_info_notify_update(struct net *net, struct nl_info *info); void fib_notify(struct net *net, struct notifier_block *nb); struct fib_table { diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 334f723bdf80..ea7df7ebf597 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1943,6 +1943,78 @@ int fib_table_flush(struct net *net, struct fib_table *tb, bool flush_all) return found; } +/* derived from fib_trie_free */ +static void __fib_info_notify_update(struct net *net, struct fib_table *tb, + struct nl_info *info) +{ + struct trie *t = (struct trie *)tb->tb_data; + struct key_vector *pn = t->kv; + unsigned long cindex = 1; + struct fib_alias *fa; + + for (;;) { + struct key_vector *n; + + if (!(cindex--)) { + t_key pkey = pn->key; + + if (IS_TRIE(pn)) + break; + + n = pn; + pn = node_parent(pn); + cindex = get_index(pkey, pn); + continue; + } + + /* grab the next available node */ + n = get_child(pn, cindex); + if (!n) + continue; + + if (IS_TNODE(n)) { + /* record pn and cindex for leaf walking */ + pn = n; + cindex = 1ul << n->bits; + + continue; + } + + hlist_for_each_entry(fa, &n->leaf, fa_list) { + struct fib_info *fi = fa->fa_info; + + if (!fi || !fi->nh_updated || fa->tb_id != tb->tb_id) + continue; + + rtmsg_fib(RTM_NEWROUTE, htonl(n->key), fa, + KEYLENGTH - fa->fa_slen, tb->tb_id, + info, NLM_F_REPLACE); + + /* call_fib_entry_notifiers will be removed when + * in-kernel notifier is implemented and supported + * for nexthop objects + */ + call_fib_entry_notifiers(net, FIB_EVENT_ENTRY_REPLACE, + n->key, + KEYLENGTH - fa->fa_slen, fa, + NULL); + } + } +} + +void fib_info_notify_update(struct net *net, struct nl_info *info) +{ + unsigned int h; + + for (h = 0; h < FIB_TABLE_HASHSZ; h++) { + struct hlist_head *head = &net->ipv4.fib_table_hash[h]; + struct fib_table *tb; + + hlist_for_each_entry_rcu(tb, head, tb_hlist) + __fib_info_notify_update(net, tb, info); + } +} + static void fib_leaf_notify(struct net *net, struct key_vector *l, struct fib_table *tb, struct notifier_block *nb) { |