ipsec: remove dedicated IPSec tunnels

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

diff --git a/src/vnet/ipsec/ipsec.c b/src/vnet/ipsec/ipsec.c
index 3586ca2..c54b94a 100644 (file)
--- a/src/vnet/ipsec/ipsec.c
+++ b/src/vnet/ipsec/ipsec.c
@@ -30,15 +30,37 @@ ipsec_main_t ipsec_main;
 static clib_error_t *
 ipsec_check_ah_support (ipsec_sa_t * sa)
 {
+  ipsec_main_t *im = &ipsec_main;
+
   if (sa->integ_alg == IPSEC_INTEG_ALG_NONE)
     return clib_error_return (0, "unsupported none integ-alg");
+
+  if (!vnet_crypto_is_set_handler (im->integ_algs[sa->integ_alg].alg))
+    return clib_error_return (0, "No crypto engine support for %U",
+                             format_ipsec_integ_alg, sa->integ_alg);
+
   return 0;
 }
 
 static clib_error_t *
 ipsec_check_esp_support (ipsec_sa_t * sa)
 {
-  return 0;
+  ipsec_main_t *im = &ipsec_main;
+
+  if (IPSEC_INTEG_ALG_NONE != sa->integ_alg)
+    {
+      if (!vnet_crypto_is_set_handler (im->integ_algs[sa->integ_alg].alg))
+       return clib_error_return (0, "No crypto engine support for %U",
+                                 format_ipsec_integ_alg, sa->integ_alg);
+    }
+  if (IPSEC_CRYPTO_ALG_NONE != sa->crypto_alg)
+    {
+      if (!vnet_crypto_is_set_handler (im->crypto_algs[sa->crypto_alg].alg))
+       return clib_error_return (0, "No crypto engine support for %U",
+                                 format_ipsec_crypto_alg, sa->crypto_alg);
+    }
+
+  return (0);
 }
 
 clib_error_t *
@@ -100,13 +122,14 @@ ipsec_add_node (vlib_main_t * vm, const char *node_name,
   *out_next_index = vlib_node_add_next (vm, prev_node->index, node->index);
 }
 
-static void
+void
 ipsec_add_feature (const char *arc_name,
                   const char *node_name, u32 * out_feature_index)
 {
   u8 arc;
 
   arc = vnet_get_feature_arc_index (arc_name);
+  ASSERT (arc != (u8) ~ 0);
   *out_feature_index = vnet_get_feature_index (arc, node_name);
 }
 
@@ -183,11 +206,6 @@ ipsec_rsc_in_use (ipsec_main_t * im)
                              "%d SA entries configured",
                              pool_elts (im->sad));
 
-  if (pool_elts (im->tunnel_interfaces))
-    return clib_error_return (0,
-                             "%d tunnel-interface entries configured",
-                             pool_elts (im->tunnel_interfaces));
-
   return (NULL);
 }
 
@@ -247,6 +265,10 @@ ipsec_init (vlib_main_t * vm)
   ipsec_main_t *im = &ipsec_main;
   ipsec_main_crypto_alg_t *a;
 
+  /* Backend registration requires the feature arcs to be set up */
+  if ((error = vlib_call_init_function (vm, vnet_feature_init)))
+    return (error);
+
   im->vnet_main = vnet_get_main ();
   im->vlib_main = vm;
 
@@ -258,7 +280,7 @@ ipsec_init (vlib_main_t * vm)
   ASSERT (node);
   im->error_drop_node_index = node->index;
 
-  u32 idx = ipsec_register_ah_backend (vm, im, "default openssl backend",
+  u32 idx = ipsec_register_ah_backend (vm, im, "crypto engine backend",
                                       "ah4-encrypt",
                                       "ah4-decrypt",
                                       "ah6-encrypt",
@@ -271,7 +293,7 @@ ipsec_init (vlib_main_t * vm)
   ASSERT (0 == rv);
   (void) (rv);                 // avoid warning
 
-  idx = ipsec_register_esp_backend (vm, im, "default openssl backend",
+  idx = ipsec_register_esp_backend (vm, im, "crypto engine backend",
                                    "esp4-encrypt",
                                    "esp4-encrypt-tun",
                                    "esp4-decrypt",
@@ -288,11 +310,15 @@ ipsec_init (vlib_main_t * vm)
   if ((error = vlib_call_init_function (vm, ipsec_cli_init)))
     return error;
 
-  if ((error = vlib_call_init_function (vm, ipsec_tunnel_if_init)))
-    return error;
-
   vec_validate (im->crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
 
+  a = im->crypto_algs + IPSEC_CRYPTO_ALG_NONE;
+  a->enc_op_id = VNET_CRYPTO_OP_NONE;
+  a->dec_op_id = VNET_CRYPTO_OP_NONE;
+  a->alg = VNET_CRYPTO_ALG_NONE;
+  a->iv_size = 0;
+  a->block_size = 1;
+
   a = im->crypto_algs + IPSEC_CRYPTO_ALG_DES_CBC;
   a->enc_op_id = VNET_CRYPTO_OP_DES_CBC_ENC;
   a->dec_op_id = VNET_CRYPTO_OP_DES_CBC_DEC;
@@ -347,6 +373,11 @@ ipsec_init (vlib_main_t * vm)
   vec_validate (im->integ_algs, IPSEC_INTEG_N_ALG - 1);
   ipsec_main_integ_alg_t *i;
 
+  i = &im->integ_algs[IPSEC_INTEG_ALG_MD5_96];
+  i->op_id = VNET_CRYPTO_OP_MD5_HMAC;
+  i->alg = VNET_CRYPTO_ALG_HMAC_MD5;
+  i->icv_size = 12;
+
   i = &im->integ_algs[IPSEC_INTEG_ALG_SHA1_96];
   i->op_id = VNET_CRYPTO_OP_SHA1_HMAC;
   i->alg = VNET_CRYPTO_ALG_HMAC_SHA1;