summaryrefslogtreecommitdiff
path: root/net/ipv4/fib_trie.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv4/fib_trie.c')
-rw-r--r--net/ipv4/fib_trie.c75
1 files changed, 43 insertions, 32 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 09b62e17dd8c..15d32612e3c6 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -72,6 +72,7 @@
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/export.h>
+#include <linux/vmalloc.h>
#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/protocol.h>
@@ -324,13 +325,15 @@ static inline void empty_child_dec(struct key_vector *n)
static struct key_vector *leaf_new(t_key key, struct fib_alias *fa)
{
- struct tnode *kv = kmem_cache_alloc(trie_leaf_kmem, GFP_KERNEL);
- struct key_vector *l = kv->kv;
+ struct key_vector *l;
+ struct tnode *kv;
+ kv = kmem_cache_alloc(trie_leaf_kmem, GFP_KERNEL);
if (!kv)
return NULL;
/* initialize key vector */
+ l = kv->kv;
l->key = key;
l->pos = 0;
l->bits = 0;
@@ -345,24 +348,26 @@ static struct key_vector *leaf_new(t_key key, struct fib_alias *fa)
static struct key_vector *tnode_new(t_key key, int pos, int bits)
{
- struct tnode *tnode = tnode_alloc(bits);
unsigned int shift = pos + bits;
- struct key_vector *tn = tnode->kv;
+ struct key_vector *tn;
+ struct tnode *tnode;
/* verify bits and pos their msb bits clear and values are valid */
BUG_ON(!bits || (shift > KEYLENGTH));
- pr_debug("AT %p s=%zu %zu\n", tnode, TNODE_SIZE(0),
- sizeof(struct key_vector *) << bits);
-
+ tnode = tnode_alloc(bits);
if (!tnode)
return NULL;
+ pr_debug("AT %p s=%zu %zu\n", tnode, TNODE_SIZE(0),
+ sizeof(struct key_vector *) << bits);
+
if (bits == KEYLENGTH)
tnode->full_children = 1;
else
tnode->empty_children = 1ul << bits;
+ tn = tnode->kv;
tn->key = (shift < KEYLENGTH) ? (key >> shift) << shift : 0;
tn->pos = pos;
tn->bits = bits;
@@ -1077,6 +1082,7 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
struct trie *t = (struct trie *)tb->tb_data;
struct fib_alias *fa, *new_fa;
struct key_vector *l, *tp;
+ unsigned int nlflags = 0;
struct fib_info *fi;
u8 plen = cfg->fc_dst_len;
u8 slen = KEYLENGTH - plen;
@@ -1166,13 +1172,13 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
new_fa->fa_slen = fa->fa_slen;
new_fa->tb_id = tb->tb_id;
- err = netdev_switch_fib_ipv4_add(key, plen, fi,
- new_fa->fa_tos,
- cfg->fc_type,
- cfg->fc_nlflags,
- tb->tb_id);
+ err = switchdev_fib_ipv4_add(key, plen, fi,
+ new_fa->fa_tos,
+ cfg->fc_type,
+ cfg->fc_nlflags,
+ tb->tb_id);
if (err) {
- netdev_switch_fib_ipv4_abort(fi);
+ switchdev_fib_ipv4_abort(fi);
kmem_cache_free(fn_alias_kmem, new_fa);
goto out;
}
@@ -1196,7 +1202,9 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
if (fa_match)
goto out;
- if (!(cfg->fc_nlflags & NLM_F_APPEND))
+ if (cfg->fc_nlflags & NLM_F_APPEND)
+ nlflags = NLM_F_APPEND;
+ else
fa = fa_first;
}
err = -ENOENT;
@@ -1216,12 +1224,10 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
new_fa->tb_id = tb->tb_id;
/* (Optionally) offload fib entry to switch hardware. */
- err = netdev_switch_fib_ipv4_add(key, plen, fi, tos,
- cfg->fc_type,
- cfg->fc_nlflags,
- tb->tb_id);
+ err = switchdev_fib_ipv4_add(key, plen, fi, tos, cfg->fc_type,
+ cfg->fc_nlflags, tb->tb_id);
if (err) {
- netdev_switch_fib_ipv4_abort(fi);
+ switchdev_fib_ipv4_abort(fi);
goto out_free_new_fa;
}
@@ -1235,12 +1241,12 @@ int fib_table_insert(struct fib_table *tb, struct fib_config *cfg)
rt_cache_flush(cfg->fc_nlinfo.nl_net);
rtmsg_fib(RTM_NEWROUTE, htonl(key), new_fa, plen, new_fa->tb_id,
- &cfg->fc_nlinfo, 0);
+ &cfg->fc_nlinfo, nlflags);
succeeded:
return 0;
out_sw_fib_del:
- netdev_switch_fib_ipv4_del(key, plen, fi, tos, cfg->fc_type, tb->tb_id);
+ switchdev_fib_ipv4_del(key, plen, fi, tos, cfg->fc_type, tb->tb_id);
out_free_new_fa:
kmem_cache_free(fn_alias_kmem, new_fa);
out:
@@ -1406,9 +1412,15 @@ found:
continue;
for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) {
const struct fib_nh *nh = &fi->fib_nh[nhsel];
+ struct in_device *in_dev = __in_dev_get_rcu(nh->nh_dev);
if (nh->nh_flags & RTNH_F_DEAD)
continue;
+ if (in_dev &&
+ IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) &&
+ nh->nh_flags & RTNH_F_LINKDOWN &&
+ !(fib_flags & FIB_LOOKUP_IGNORE_LINKSTATE))
+ continue;
if (flp->flowi4_oif && flp->flowi4_oif != nh->nh_oif)
continue;
@@ -1518,8 +1530,8 @@ int fib_table_delete(struct fib_table *tb, struct fib_config *cfg)
if (!fa_to_delete)
return -ESRCH;
- netdev_switch_fib_ipv4_del(key, plen, fa_to_delete->fa_info, tos,
- cfg->fc_type, tb->tb_id);
+ switchdev_fib_ipv4_del(key, plen, fa_to_delete->fa_info, tos,
+ cfg->fc_type, tb->tb_id);
rtmsg_fib(RTM_DELROUTE, htonl(key), fa_to_delete, plen, tb->tb_id,
&cfg->fc_nlinfo, 0);
@@ -1768,10 +1780,9 @@ void fib_table_flush_external(struct fib_table *tb)
if (!fi || !(fi->fib_flags & RTNH_F_OFFLOAD))
continue;
- netdev_switch_fib_ipv4_del(n->key,
- KEYLENGTH - fa->fa_slen,
- fi, fa->fa_tos,
- fa->fa_type, tb->tb_id);
+ switchdev_fib_ipv4_del(n->key, KEYLENGTH - fa->fa_slen,
+ fi, fa->fa_tos, fa->fa_type,
+ tb->tb_id);
}
/* update leaf slen */
@@ -1836,10 +1847,9 @@ int fib_table_flush(struct fib_table *tb)
continue;
}
- netdev_switch_fib_ipv4_del(n->key,
- KEYLENGTH - fa->fa_slen,
- fi, fa->fa_tos,
- fa->fa_type, tb->tb_id);
+ switchdev_fib_ipv4_del(n->key, KEYLENGTH - fa->fa_slen,
+ fi, fa->fa_tos, fa->fa_type,
+ tb->tb_id);
hlist_del_rcu(&fa->fa_list);
fib_release_info(fa->fa_info);
alias_free_mem_rcu(fa);
@@ -2057,11 +2067,12 @@ static struct key_vector *fib_trie_get_next(struct fib_trie_iter *iter)
static struct key_vector *fib_trie_get_first(struct fib_trie_iter *iter,
struct trie *t)
{
- struct key_vector *n, *pn = t->kv;
+ struct key_vector *n, *pn;
if (!t)
return NULL;
+ pn = t->kv;
n = rcu_dereference(pn->tnode[0]);
if (!n)
return NULL;
generated by cgit (git 2.34.1) at 2024-06-02 04:30:05 +0000