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authorDavid Ahern <dsahern@gmail.com>2019-04-16 14:36:00 -0700
committerDavid S. Miller <davem@davemloft.net>2019-04-17 23:08:51 -0700
commit7e4b5128757397132ffff1d7b1be9f992e9cd9f2 (patch)
tree88fb11cf8d0acebf5ff340012f0192cd73a1cb71 /net/ipv6
parentb1d40991506aa9f1de310a2e74ef8e3bec6ba215 (diff)
ipv6: Pass fib6_result to rt6_find_cached_rt
Simplify rt6_find_cached_rt for the fast path cases and pass fib6_result to rt6_find_cached_rt. Rename the local return variable to ret to maintain consisting with fib6_result name. Update the comment in rt6_find_cached_rt to reference the new names in a fib6_info vs the old name when fib entries were an rt6_info. Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/route.c35
1 files changed, 21 insertions, 14 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 0ad77b62da7c..e3c5f95550bc 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -110,7 +110,7 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
struct in6_addr *dest, struct in6_addr *src,
int iif, int type, u32 portid, u32 seq,
unsigned int flags);
-static struct rt6_info *rt6_find_cached_rt(struct fib6_info *rt,
+static struct rt6_info *rt6_find_cached_rt(const struct fib6_result *res,
struct in6_addr *daddr,
struct in6_addr *saddr);
@@ -1098,7 +1098,7 @@ restart:
fl6->flowi6_oif != 0, skb, flags);
/* Search through exception table */
- rt = rt6_find_cached_rt(res.f6i, &fl6->daddr, &fl6->saddr);
+ rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr);
if (rt) {
if (ip6_hold_safe(net, &rt))
dst_use_noref(&rt->dst, jiffies);
@@ -1538,33 +1538,33 @@ out:
/* Find cached rt in the hash table inside passed in rt
* Caller has to hold rcu_read_lock()
*/
-static struct rt6_info *rt6_find_cached_rt(struct fib6_info *rt,
+static struct rt6_info *rt6_find_cached_rt(const struct fib6_result *res,
struct in6_addr *daddr,
struct in6_addr *saddr)
{
struct rt6_exception_bucket *bucket;
struct in6_addr *src_key = NULL;
struct rt6_exception *rt6_ex;
- struct rt6_info *res = NULL;
+ struct rt6_info *ret = NULL;
- bucket = rcu_dereference(rt->rt6i_exception_bucket);
+ bucket = rcu_dereference(res->f6i->rt6i_exception_bucket);
#ifdef CONFIG_IPV6_SUBTREES
- /* rt6i_src.plen != 0 indicates rt is in subtree
+ /* fib6i_src.plen != 0 indicates f6i is in subtree
* and exception table is indexed by a hash of
- * both rt6i_dst and rt6i_src.
+ * both fib6_dst and fib6_src.
* Otherwise, the exception table is indexed by
- * a hash of only rt6i_dst.
+ * a hash of only fib6_dst.
*/
- if (rt->fib6_src.plen)
+ if (res->f6i->fib6_src.plen)
src_key = saddr;
#endif
rt6_ex = __rt6_find_exception_rcu(&bucket, daddr, src_key);
if (rt6_ex && !rt6_check_expired(rt6_ex->rt6i))
- res = rt6_ex->rt6i;
+ ret = rt6_ex->rt6i;
- return res;
+ return ret;
}
/* Remove the passed in cached rt from the hash table that contains it */
@@ -1869,7 +1869,7 @@ struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table,
fib6_select_path(net, &res, fl6, oif, false, skb, strict);
/*Search through exception table */
- rt = rt6_find_cached_rt(res.f6i, &fl6->daddr, &fl6->saddr);
+ rt = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr);
if (rt) {
if (ip6_hold_safe(net, &rt))
dst_use_noref(&rt->dst, jiffies);
@@ -2430,9 +2430,12 @@ static bool ip6_redirect_nh_match(struct fib6_info *f6i,
* is different.
*/
if (!ipv6_addr_equal(gw, &nh->fib_nh_gw6)) {
+ struct fib6_result res = {
+ .f6i = f6i,
+ };
struct rt6_info *rt_cache;
- rt_cache = rt6_find_cached_rt(f6i, &fl6->daddr, &fl6->saddr);
+ rt_cache = rt6_find_cached_rt(&res, &fl6->daddr, &fl6->saddr);
if (rt_cache &&
ipv6_addr_equal(gw, &rt_cache->rt6i_gateway)) {
*ret = rt_cache;
@@ -3311,9 +3314,13 @@ static int ip6_route_del(struct fib6_config *cfg,
struct fib6_nh *nh;
if (cfg->fc_flags & RTF_CACHE) {
+ struct fib6_result res = {
+ .f6i = rt,
+ };
int rc;
- rt_cache = rt6_find_cached_rt(rt, &cfg->fc_dst,
+ rt_cache = rt6_find_cached_rt(&res,
+ &cfg->fc_dst,
&cfg->fc_src);
if (rt_cache) {
rc = ip6_del_cached_rt(rt_cache, cfg);