summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
authorDavid Ahern <dsa@cumulusnetworks.com>2015-09-16 01:10:50 +0300
committerDavid S. Miller <davem@davemloft.net>2015-09-18 02:36:34 +0300
commit58189ca7b27411c3dc9a5cb9eeee0906da684c59 (patch)
treea193039f8278a234772c8a84fc21aaead1370457 /net
parentd828755eae637c6ca39e30702e98abaf34cac146 (diff)
downloadlinux-58189ca7b27411c3dc9a5cb9eeee0906da684c59.tar.xz
net: Fix vti use case with oif in dst lookups
Steffen reported that the recent change to add oif to dst lookups breaks the VTI use case. The problem is that with the oif set in the flow struct the comparison to the nh_oif is triggered. Fix by splitting the FLOWI_FLAG_VRFSRC into 2 flags -- one that triggers the vrf device cache bypass (FLOWI_FLAG_VRFSRC) and another telling the lookup to not compare nh oif (FLOWI_FLAG_SKIP_NH_OIF). Fixes: 42a7b32b73d6 ("xfrm: Add oif to dst lookups") Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/fib_trie.c2
-rw-r--r--net/ipv4/udp.c3
-rw-r--r--net/ipv4/xfrm4_policy.c2
3 files changed, 5 insertions, 2 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 26d6ffb6d23c..6c2af797f2f9 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1426,7 +1426,7 @@ found:
nh->nh_flags & RTNH_F_LINKDOWN &&
!(fib_flags & FIB_LOOKUP_IGNORE_LINKSTATE))
continue;
- if (!(flp->flowi4_flags & FLOWI_FLAG_VRFSRC)) {
+ if (!(flp->flowi4_flags & FLOWI_FLAG_SKIP_NH_OIF)) {
if (flp->flowi4_oif &&
flp->flowi4_oif != nh->nh_oif)
continue;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index c0a15e7f359f..f7d1d5e19e95 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1024,7 +1024,8 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
if (netif_index_is_vrf(net, ipc.oif)) {
flowi4_init_output(fl4, ipc.oif, sk->sk_mark, tos,
RT_SCOPE_UNIVERSE, sk->sk_protocol,
- (flow_flags | FLOWI_FLAG_VRFSRC),
+ (flow_flags | FLOWI_FLAG_VRFSRC |
+ FLOWI_FLAG_SKIP_NH_OIF),
faddr, saddr, dport,
inet->inet_sport);
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index bb919b28619f..c10a9ee68433 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -33,6 +33,8 @@ static struct dst_entry *__xfrm4_dst_lookup(struct net *net, struct flowi4 *fl4,
if (saddr)
fl4->saddr = saddr->a4;
+ fl4->flowi4_flags = FLOWI_FLAG_SKIP_NH_OIF;
+
rt = __ip_route_output_key(net, fl4);
if (!IS_ERR(rt))
return &rt->dst;