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authorThomas Graf <tgraf@suug.ch>2015-07-21 11:43:59 +0300
committerDavid S. Miller <davem@davemloft.net>2015-07-21 20:39:06 +0300
commit1b7179d3adff0ab71f85ee24d7de28ccb7734b89 (patch)
treeead538e72fa7d897db7d756f6fbe042286ed49e5 /net
parentee122c79d4227f6ec642157834b6a90fcffa4382 (diff)
downloadlinux-1b7179d3adff0ab71f85ee24d7de28ccb7734b89.tar.xz
route: Extend flow representation with tunnel key
Add a new flowi_tunnel structure which is a subset of ip_tunnel_key to allow routes to match on tunnel metadata. For now, the tunnel id is added to flowi_tunnel which allows for routes to be bound to specific virtual tunnels. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/fib_frontend.c2
-rw-r--r--net/ipv4/route.c8
2 files changed, 10 insertions, 0 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 9b2019cc3586..6b98de0d7949 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -280,6 +280,7 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb)
fl4.flowi4_tos = RT_TOS(ip_hdr(skb)->tos);
fl4.flowi4_scope = scope;
fl4.flowi4_mark = IN_DEV_SRC_VMARK(in_dev) ? skb->mark : 0;
+ fl4.flowi4_tun_key.tun_id = 0;
if (!fib_lookup(net, &fl4, &res, 0))
return FIB_RES_PREFSRC(net, res);
} else {
@@ -313,6 +314,7 @@ static int __fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst,
fl4.saddr = dst;
fl4.flowi4_tos = tos;
fl4.flowi4_scope = RT_SCOPE_UNIVERSE;
+ fl4.flowi4_tun_key.tun_id = 0;
no_addr = idev->ifa_list == NULL;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 4c8e84e75871..91da18be0a71 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -91,6 +91,7 @@
#include <linux/slab.h>
#include <linux/jhash.h>
#include <net/dst.h>
+#include <net/dst_metadata.h>
#include <net/net_namespace.h>
#include <net/protocol.h>
#include <net/ip.h>
@@ -110,6 +111,7 @@
#include <linux/kmemleak.h>
#endif
#include <net/secure_seq.h>
+#include <net/ip_tunnels.h>
#define RT_FL_TOS(oldflp4) \
((oldflp4)->flowi4_tos & (IPTOS_RT_MASK | RTO_ONLINK))
@@ -1673,6 +1675,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
{
struct fib_result res;
struct in_device *in_dev = __in_dev_get_rcu(dev);
+ struct ip_tunnel_info *tun_info;
struct flowi4 fl4;
unsigned int flags = 0;
u32 itag = 0;
@@ -1690,6 +1693,11 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
by fib_lookup.
*/
+ tun_info = skb_tunnel_info(skb);
+ if (tun_info && tun_info->mode == IP_TUNNEL_INFO_RX)
+ fl4.flowi4_tun_key.tun_id = tun_info->key.tun_id;
+ else
+ fl4.flowi4_tun_key.tun_id = 0;
skb_dst_drop(skb);
if (ipv4_is_multicast(saddr) || ipv4_is_lbcast(saddr))