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authorWei Wang <weiwan@google.com>2017-10-06 21:06:02 +0200
committerDavid S. Miller <davem@davemloft.net>2017-10-07 22:22:57 +0200
commit38fbeeeeccdb38d0635398e8e344d245f6d8dc52 (patch)
treedbdcbf11c2822cd52ff757410ecdea0db0ad3865 /net/ipv6/route.c
parentipv6: prepare fib6_age() for exception table (diff)
downloadlinux-38fbeeeeccdb38d0635398e8e344d245f6d8dc52.tar.xz
linux-38fbeeeeccdb38d0635398e8e344d245f6d8dc52.zip
ipv6: prepare fib6_locate() for exception table
fib6_locate() is used to find the fib6_node according to the passed in prefix address key. It currently tries to find the fib6_node with the exact match of the passed in key. However, when we move cached routes into the exception table, fib6_locate() will fail to find the fib6_node for it as the cached routes will be stored in the exception table under the fib6_node with the longest prefix match of the cache's dst addr key. This commit adds a new parameter to let the caller specify if it needs exact match or longest prefix match. Right now, all callers still does exact match when calling fib6_locate(). It will be changed in later commit where exception table is hooked up to store cached routes. Signed-off-by: Wei Wang <weiwan@google.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/route.c')
-rw-r--r--net/ipv6/route.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index d2dd55f58b5d..855b4ceec349 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2800,7 +2800,8 @@ static int ip6_route_del(struct fib6_config *cfg,
fn = fib6_locate(&table->tb6_root,
&cfg->fc_dst, cfg->fc_dst_len,
- &cfg->fc_src, cfg->fc_src_len);
+ &cfg->fc_src, cfg->fc_src_len,
+ true);
if (fn) {
for (rt = fn->leaf; rt; rt = rt->dst.rt6_next) {
@@ -3009,7 +3010,7 @@ static struct rt6_info *rt6_get_route_info(struct net *net,
return NULL;
read_lock_bh(&table->tb6_lock);
- fn = fib6_locate(&table->tb6_root, prefix, prefixlen, NULL, 0);
+ fn = fib6_locate(&table->tb6_root, prefix, prefixlen, NULL, 0, true);
if (!fn)
goto out;