ipsec: support 4o6 and 6o4 for tunnel protect

[vpp.git] / src / vnet / ipsec / ipsec_tun.c

diff --git a/src/vnet/ipsec/ipsec_tun.c b/src/vnet/ipsec/ipsec_tun.c
index 859fab8..ad544a9 100644 (file)
--- a/src/vnet/ipsec/ipsec_tun.c
+++ b/src/vnet/ipsec/ipsec_tun.c
@@ -39,38 +39,29 @@ static int
 ipsec_tun_protect_feature_set (ipsec_tun_protect_t * itp, u8 enable)
 {
   u32 sai = itp->itp_out_sa;
-  int is_ip4, is_l2, rv;
+  int rv;
 
-  is_ip4 = ip46_address_is_ip4 (&itp->itp_tun.src);
-  is_l2 = itp->itp_flags & IPSEC_PROTECT_L2;
+  const char *enc_node = (ip46_address_is_ip4 (&itp->itp_tun.src) ?
+                         "esp4-encrypt-tun" : "esp6-encrypt-tun");
 
-  if (is_ip4)
+  if (itp->itp_flags & IPSEC_PROTECT_L2)
     {
-      if (is_l2)
-       rv = vnet_feature_enable_disable ("ethernet-output",
-                                         "esp4-encrypt-tun",
-                                         itp->itp_sw_if_index, enable,
-                                         &sai, sizeof (sai));
-      else
-       rv = vnet_feature_enable_disable ("ip4-output",
-                                         "esp4-encrypt-tun",
-                                         itp->itp_sw_if_index, enable,
-                                         &sai, sizeof (sai));
+      rv = vnet_feature_enable_disable ("ethernet-output",
+                                       enc_node,
+                                       itp->itp_sw_if_index, enable,
+                                       &sai, sizeof (sai));
     }
   else
     {
-      if (is_l2)
-       rv = vnet_feature_enable_disable ("ethernet-output",
-                                         "esp6-encrypt-tun",
-                                         itp->itp_sw_if_index, enable,
-                                         &sai, sizeof (sai));
-      else
-       rv = vnet_feature_enable_disable ("ip6-output",
-                                         "esp6-encrypt-tun",
-                                         itp->itp_sw_if_index, enable,
-                                         &sai, sizeof (sai));
+      rv = vnet_feature_enable_disable ("ip4-output",
+                                       enc_node,
+                                       itp->itp_sw_if_index, enable,
+                                       &sai, sizeof (sai));
+      rv = vnet_feature_enable_disable ("ip6-output",
+                                       enc_node,
+                                       itp->itp_sw_if_index, enable,
+                                       &sai, sizeof (sai));
     }
-
   ASSERT (!rv);
   return (rv);
 }