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-rw-r--r--include/net/ip_fib.h6
-rw-r--r--net/ipv4/fib_frontend.c15
-rw-r--r--net/ipv4/fib_hash.c72
-rw-r--r--net/ipv4/fib_semantics.c56
-rw-r--r--net/ipv4/fib_trie.c74
-rw-r--r--net/ipv4/route.c2
6 files changed, 58 insertions, 167 deletions
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index f5199b08ba53..819d61ca25cb 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -158,9 +158,6 @@ extern int fib_table_delete(struct fib_table *, struct fib_config *);
extern int fib_table_dump(struct fib_table *table, struct sk_buff *skb,
struct netlink_callback *cb);
extern int fib_table_flush(struct fib_table *table);
-extern void fib_table_select_default(struct fib_table *table,
- const struct flowi *flp,
- struct fib_result *res);
extern void fib_free_table(struct fib_table *tb);
@@ -221,8 +218,7 @@ extern void ip_fib_init(void);
extern int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
struct net_device *dev, __be32 *spec_dst,
u32 *itag, u32 mark);
-extern void fib_select_default(struct net *net, const struct flowi *flp,
- struct fib_result *res);
+extern void fib_select_default(struct fib_result *res);
/* Exported by fib_semantics.c */
extern int ip_fib_check_default(__be32 gw, struct net_device *dev);
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 1d2cdd43a878..930768ba49af 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -114,21 +114,6 @@ struct fib_table *fib_get_table(struct net *net, u32 id)
}
#endif /* CONFIG_IP_MULTIPLE_TABLES */
-void fib_select_default(struct net *net,
- const struct flowi *flp, struct fib_result *res)
-{
- struct fib_table *tb;
- int table = RT_TABLE_MAIN;
-#ifdef CONFIG_IP_MULTIPLE_TABLES
- if (res->r == NULL || res->r->action != FR_ACT_TO_TBL)
- return;
- table = res->r->table;
-#endif
- tb = fib_get_table(net, table);
- if (FIB_RES_GW(*res) && FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK)
- fib_table_select_default(tb, flp, res);
-}
-
static void fib_flush(struct net *net)
{
int flushed = 0;
diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
index 0a88866ad1e5..fadb6024de27 100644
--- a/net/ipv4/fib_hash.c
+++ b/net/ipv4/fib_hash.c
@@ -302,78 +302,6 @@ out:
return err;
}
-void fib_table_select_default(struct fib_table *tb,
- const struct flowi *flp, struct fib_result *res)
-{
- int order, last_idx;
- struct hlist_node *node;
- struct fib_node *f;
- struct fib_info *fi = NULL;
- struct fib_info *last_resort;
- struct fn_hash *t = (struct fn_hash *)tb->tb_data;
- struct fn_zone *fz = t->fn_zones[0];
- struct hlist_head *head;
-
- if (fz == NULL)
- return;
-
- last_idx = -1;
- last_resort = NULL;
- order = -1;
-
- rcu_read_lock();
- head = rcu_dereference(fz->fz_hash);
- hlist_for_each_entry_rcu(f, node, head, fn_hash) {
- struct fib_alias *fa;
-
- list_for_each_entry_rcu(fa, &f->fn_alias, fa_list) {
- struct fib_info *next_fi = fa->fa_info;
-
- if (fa->fa_scope != res->scope ||
- fa->fa_type != RTN_UNICAST)
- continue;
-
- if (next_fi->fib_priority > res->fi->fib_priority)
- break;
- if (!next_fi->fib_nh[0].nh_gw ||
- next_fi->fib_nh[0].nh_scope != RT_SCOPE_LINK)
- continue;
-
- fib_alias_accessed(fa);
-
- if (fi == NULL) {
- if (next_fi != res->fi)
- break;
- } else if (!fib_detect_death(fi, order, &last_resort,
- &last_idx, tb->tb_default)) {
- fib_result_assign(res, fi);
- tb->tb_default = order;
- goto out;
- }
- fi = next_fi;
- order++;
- }
- }
-
- if (order <= 0 || fi == NULL) {
- tb->tb_default = -1;
- goto out;
- }
-
- if (!fib_detect_death(fi, order, &last_resort, &last_idx,
- tb->tb_default)) {
- fib_result_assign(res, fi);
- tb->tb_default = order;
- goto out;
- }
-
- if (last_idx >= 0)
- fib_result_assign(res, last_resort);
- tb->tb_default = last_idx;
-out:
- rcu_read_unlock();
-}
-
/* Insert node F to FZ. */
static inline void fib_insert_node(struct fn_zone *fz, struct fib_node *f)
{
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 1bf6fb906cfc..b15857d2b77e 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1136,6 +1136,62 @@ int fib_sync_down_dev(struct net_device *dev, int force)
return ret;
}
+/* Must be invoked inside of an RCU protected region. */
+void fib_select_default(struct fib_result *res)
+{
+ struct fib_info *fi = NULL, *last_resort = NULL;
+ struct list_head *fa_head = res->fa_head;
+ struct fib_table *tb = res->table;
+ int order = -1, last_idx = -1;
+ struct fib_alias *fa;
+
+ list_for_each_entry_rcu(fa, fa_head, fa_list) {
+ struct fib_info *next_fi = fa->fa_info;
+
+ if (fa->fa_scope != res->scope ||
+ fa->fa_type != RTN_UNICAST)
+ continue;
+
+ if (next_fi->fib_priority > res->fi->fib_priority)
+ break;
+ if (!next_fi->fib_nh[0].nh_gw ||
+ next_fi->fib_nh[0].nh_scope != RT_SCOPE_LINK)
+ continue;
+
+ fib_alias_accessed(fa);
+
+ if (fi == NULL) {
+ if (next_fi != res->fi)
+ break;
+ } else if (!fib_detect_death(fi, order, &last_resort,
+ &last_idx, tb->tb_default)) {
+ fib_result_assign(res, fi);
+ tb->tb_default = order;
+ goto out;
+ }
+ fi = next_fi;
+ order++;
+ }
+
+ if (order <= 0 || fi == NULL) {
+ tb->tb_default = -1;
+ goto out;
+ }
+
+ if (!fib_detect_death(fi, order, &last_resort, &last_idx,
+ tb->tb_default)) {
+ fib_result_assign(res, fi);
+ tb->tb_default = order;
+ goto out;
+ }
+
+ if (last_idx >= 0)
+ fib_result_assign(res, last_resort);
+ tb->tb_default = last_idx;
+out:
+ rcu_read_unlock();
+}
+
#ifdef CONFIG_IP_ROUTE_MULTIPATH
/*
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 8cee5c8848ed..16d589c70a92 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1802,80 +1802,6 @@ void fib_free_table(struct fib_table *tb)
kfree(tb);
}
-void fib_table_select_default(struct fib_table *tb,
- const struct flowi *flp,
- struct fib_result *res)
-{
- struct trie *t = (struct trie *) tb->tb_data;
- int order, last_idx;
- struct fib_info *fi = NULL;
- struct fib_info *last_resort;
- struct fib_alias *fa = NULL;
- struct list_head *fa_head;
- struct leaf *l;
-
- last_idx = -1;
- last_resort = NULL;
- order = -1;
-
- rcu_read_lock();
-
- l = fib_find_node(t, 0);
- if (!l)
- goto out;
-
- fa_head = get_fa_head(l, 0);
- if (!fa_head)
- goto out;
-
- if (list_empty(fa_head))
- goto out;
-
- list_for_each_entry_rcu(fa, fa_head, fa_list) {
- struct fib_info *next_fi = fa->fa_info;
-
- if (fa->fa_scope != res->scope ||
- fa->fa_type != RTN_UNICAST)
- continue;
-
- if (next_fi->fib_priority > res->fi->fib_priority)
- break;
- if (!next_fi->fib_nh[0].nh_gw ||
- next_fi->fib_nh[0].nh_scope != RT_SCOPE_LINK)
- continue;
-
- fib_alias_accessed(fa);
-
- if (fi == NULL) {
- if (next_fi != res->fi)
- break;
- } else if (!fib_detect_death(fi, order, &last_resort,
- &last_idx, tb->tb_default)) {
- fib_result_assign(res, fi);
- tb->tb_default = order;
- goto out;
- }
- fi = next_fi;
- order++;
- }
- if (order <= 0 || fi == NULL) {
- tb->tb_default = -1;
- goto out;
- }
-
- if (!fib_detect_death(fi, order, &last_resort, &last_idx,
- tb->tb_default)) {
- fib_result_assign(res, fi);
- tb->tb_default = order;
- goto out;
- }
- if (last_idx >= 0)
- fib_result_assign(res, last_resort);
- tb->tb_default = last_idx;
-out:
- rcu_read_unlock();
-}
-
static int fn_trie_dump_fa(t_key key, int plen, struct list_head *fah,
struct fib_table *tb,
struct sk_buff *skb, struct netlink_callback *cb)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b1e5d3ac3460..242a3de83fbb 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2711,7 +2711,7 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
else
#endif
if (!res.prefixlen && res.type == RTN_UNICAST && !fl.oif)
- fib_select_default(net, &fl, &res);
+ fib_select_default(&res);
if (!fl.fl4_src)
fl.fl4_src = FIB_RES_PREFSRC(res);