This patch adds transport ports information for route lookup so that
IPsec can select vxlan tunnel traffic to do encryption.

Signed-off-by: Qiuyu Xiao <[email protected]>
Reviewed-by: Greg Rose <[email protected]>
Tested-by: Greg Rose <[email protected]>
---
 datapath/linux/compat/vxlan.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/datapath/linux/compat/vxlan.c b/datapath/linux/compat/vxlan.c
index 7f5d5ce64..b850fdd44 100644
--- a/datapath/linux/compat/vxlan.c
+++ b/datapath/linux/compat/vxlan.c
@@ -896,6 +896,7 @@ out_free:
 static struct rtable *vxlan_get_route(struct vxlan_dev *vxlan,
                                      struct sk_buff *skb, int oif, u8 tos,
                                      __be32 daddr, __be32 *saddr,
+                                     __be16 dport, __be16 sport,
                                      struct dst_cache *dst_cache,
                                      const struct ip_tunnel_info *info)
 {
@@ -918,6 +919,8 @@ static struct rtable *vxlan_get_route(struct vxlan_dev 
*vxlan,
        fl4.flowi4_proto = IPPROTO_UDP;
        fl4.daddr = daddr;
        fl4.saddr = *saddr;
+       fl4.fl4_dport = dport;
+       fl4.fl4_sport = sport;
 
        rt = ip_route_output_key(vxlan->net, &fl4);
        if (!IS_ERR(rt)) {
@@ -934,6 +937,7 @@ static struct dst_entry *vxlan6_get_route(struct vxlan_dev 
*vxlan,
                                          __be32 label,
                                          const struct in6_addr *daddr,
                                          struct in6_addr *saddr,
+                                         __be16 dport, __be16 sport,
                                          struct dst_cache *dst_cache,
                                          const struct ip_tunnel_info *info)
 {
@@ -961,6 +965,8 @@ static struct dst_entry *vxlan6_get_route(struct vxlan_dev 
*vxlan,
        fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tos), label);
        fl6.flowi6_mark = skb->mark;
        fl6.flowi6_proto = IPPROTO_UDP;
+       fl6.fl6_dport = dport;
+       fl6.fl6_sport = sport;
 
 #ifdef HAVE_IPV6_DST_LOOKUP_NET
        err = ipv6_stub->ipv6_dst_lookup(vxlan->net,
@@ -1090,6 +1096,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct 
net_device *dev,
                                     rdst ? rdst->remote_ifindex : 0, tos,
                                     dst->sin.sin_addr.s_addr,
                                     &src->sin.sin_addr.s_addr,
+                                    dst_port, src_port,
                                     dst_cache, info);
                if (IS_ERR(rt)) {
                        netdev_dbg(dev, "no route to %pI4\n",
@@ -1149,6 +1156,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct 
net_device *dev,
                                        rdst ? rdst->remote_ifindex : 0, tos,
                                        label, &dst->sin6.sin6_addr,
                                        &src->sin6.sin6_addr,
+                                       dst_port, src_port,
                                        dst_cache, info);
                if (IS_ERR(ndst)) {
                        netdev_dbg(dev, "no route to %pI6\n",
@@ -1439,7 +1447,8 @@ int ovs_vxlan_fill_metadata_dst(struct net_device *dev, 
struct sk_buff *skb)
                        return -EINVAL;
                rt = vxlan_get_route(vxlan, skb, 0, info->key.tos,
                                     info->key.u.ipv4.dst,
-                                    &info->key.u.ipv4.src, NULL, info);
+                                    &info->key.u.ipv4.src,
+                                    dport, sport, NULL, info);
                if (IS_ERR(rt))
                        return PTR_ERR(rt);
                ip_rt_put(rt);
@@ -1449,7 +1458,8 @@ int ovs_vxlan_fill_metadata_dst(struct net_device *dev, 
struct sk_buff *skb)
 
                ndst = vxlan6_get_route(vxlan, skb, 0, info->key.tos,
                                        info->key.label, &info->key.u.ipv6.dst,
-                                       &info->key.u.ipv6.src, NULL, info);
+                                       &info->key.u.ipv6.src,
+                                       dport, sport, NULL, info);
                if (IS_ERR(ndst))
                        return PTR_ERR(ndst);
                dst_release(ndst);
-- 
2.18.0

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