ikev2: add support for custom ipsec-over-udp port
[vpp.git] / src / vnet / ipsec / ipsec_api.c
index 2c7c0d9..177300a 100644 (file)
 #include <vnet/api_errno.h>
 #include <vnet/ip/ip.h>
 #include <vnet/ip/ip_types_api.h>
+#include <vnet/ipsec/ipsec_types_api.h>
 #include <vnet/fib/fib.h>
+#include <vnet/ipip/ipip.h>
 
 #include <vnet/vnet_msg_enum.h>
 
 #if WITH_LIBSSL > 0
 #include <vnet/ipsec/ipsec.h>
+#include <vnet/ipsec/ipsec_tun.h>
 #endif /* IPSEC */
 
 #define vl_typedefs            /* define message structures */
@@ -60,7 +63,10 @@ _(IPSEC_SPD_INTERFACE_DUMP, ipsec_spd_interface_dump)                \
 _(IPSEC_TUNNEL_IF_ADD_DEL, ipsec_tunnel_if_add_del)             \
 _(IPSEC_TUNNEL_IF_SET_SA, ipsec_tunnel_if_set_sa)               \
 _(IPSEC_SELECT_BACKEND, ipsec_select_backend)                   \
-_(IPSEC_BACKEND_DUMP, ipsec_backend_dump)
+_(IPSEC_BACKEND_DUMP, ipsec_backend_dump)                       \
+_(IPSEC_TUNNEL_PROTECT_UPDATE, ipsec_tunnel_protect_update)     \
+_(IPSEC_TUNNEL_PROTECT_DEL, ipsec_tunnel_protect_del)           \
+_(IPSEC_TUNNEL_PROTECT_DUMP, ipsec_tunnel_protect_dump)
 
 static void
 vl_api_ipsec_spd_add_del_t_handler (vl_api_ipsec_spd_add_del_t * mp)
@@ -104,6 +110,133 @@ static void vl_api_ipsec_interface_add_del_spd_t_handler
   REPLY_MACRO (VL_API_IPSEC_INTERFACE_ADD_DEL_SPD_REPLY);
 }
 
+static void vl_api_ipsec_tunnel_protect_update_t_handler
+  (vl_api_ipsec_tunnel_protect_update_t * mp)
+{
+  vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main ();
+  vl_api_ipsec_tunnel_protect_update_reply_t *rmp;
+  u32 sw_if_index, ii, *sa_ins = NULL;
+  ip_address_t nh;
+  int rv;
+
+  sw_if_index = ntohl (mp->tunnel.sw_if_index);
+
+  VALIDATE_SW_IF_INDEX (&(mp->tunnel));
+
+#if WITH_LIBSSL > 0
+
+  for (ii = 0; ii < mp->tunnel.n_sa_in; ii++)
+    vec_add1 (sa_ins, ntohl (mp->tunnel.sa_in[ii]));
+
+  ip_address_decode2 (&mp->tunnel.nh, &nh);
+
+  rv = ipsec_tun_protect_update (sw_if_index, &nh,
+                                ntohl (mp->tunnel.sa_out), sa_ins);
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_IPSEC_TUNNEL_PROTECT_UPDATE_REPLY);
+}
+
+static void vl_api_ipsec_tunnel_protect_del_t_handler
+  (vl_api_ipsec_tunnel_protect_del_t * mp)
+{
+  vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main ();
+  vl_api_ipsec_tunnel_protect_del_reply_t *rmp;
+  ip_address_t nh;
+  u32 sw_if_index;
+  int rv;
+
+  sw_if_index = ntohl (mp->sw_if_index);
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+#if WITH_LIBSSL > 0
+  ip_address_decode2 (&mp->nh, &nh);
+  rv = ipsec_tun_protect_del (sw_if_index, &nh);
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_IPSEC_TUNNEL_PROTECT_DEL_REPLY);
+}
+
+typedef struct ipsec_dump_walk_ctx_t_
+{
+  vl_api_registration_t *reg;
+  u32 context;
+} ipsec_dump_walk_ctx_t;
+
+static walk_rc_t
+send_ipsec_tunnel_protect_details (index_t itpi, void *arg)
+{
+  ipsec_dump_walk_ctx_t *ctx = arg;
+  vl_api_ipsec_tunnel_protect_details_t *mp;
+  ipsec_tun_protect_t *itp;
+  u32 sai, ii = 0;
+
+  itp = ipsec_tun_protect_get (itpi);
+
+  mp = vl_msg_api_alloc (sizeof (*mp) + (sizeof (u32) * itp->itp_n_sa_in));
+  clib_memset (mp, 0, sizeof (*mp));
+  mp->_vl_msg_id = ntohs (VL_API_IPSEC_TUNNEL_PROTECT_DETAILS);
+  mp->context = ctx->context;
+
+  mp->tun.sw_if_index = htonl (itp->itp_sw_if_index);
+  ip_address_encode2 (itp->itp_key, &mp->tun.nh);
+
+  mp->tun.sa_out = htonl (itp->itp_out_sa);
+  mp->tun.n_sa_in = itp->itp_n_sa_in;
+  /* *INDENT-OFF* */
+  FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
+  ({
+    mp->tun.sa_in[ii++] = htonl (sai);
+  }));
+  /* *INDENT-ON* */
+
+  vl_api_send_msg (ctx->reg, (u8 *) mp);
+
+  return (WALK_CONTINUE);
+}
+
+static void
+vl_api_ipsec_tunnel_protect_dump_t_handler (vl_api_ipsec_tunnel_protect_dump_t
+                                           * mp)
+{
+  vl_api_registration_t *reg;
+  u32 sw_if_index;
+
+#if WITH_LIBSSL > 0
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  ipsec_dump_walk_ctx_t ctx = {
+    .reg = reg,
+    .context = mp->context,
+  };
+
+  sw_if_index = ntohl (mp->sw_if_index);
+
+  if (~0 == sw_if_index)
+    {
+      ipsec_tun_protect_walk (send_ipsec_tunnel_protect_details, &ctx);
+    }
+  else
+    {
+      ipsec_tun_protect_walk_itf (sw_if_index,
+                                 send_ipsec_tunnel_protect_details, &ctx);
+    }
+#else
+  clib_warning ("unimplemented");
+#endif
+}
+
 static int
 ipsec_spd_action_decode (vl_api_ipsec_spd_action_t in,
                         ipsec_policy_action_t * out)
@@ -148,11 +281,10 @@ static void vl_api_ipsec_spd_entry_add_del_t_handler
   p.is_ipv6 = (itype == IP46_TYPE_IP6);
 
   p.protocol = mp->entry.protocol;
-  /* leave the ports in network order */
-  p.rport.start = mp->entry.remote_port_start;
-  p.rport.stop = mp->entry.remote_port_stop;
-  p.lport.start = mp->entry.local_port_start;
-  p.lport.stop = mp->entry.local_port_stop;
+  p.rport.start = ntohs (mp->entry.remote_port_start);
+  p.rport.stop = ntohs (mp->entry.remote_port_stop);
+  p.lport.start = ntohs (mp->entry.local_port_start);
+  p.lport.stop = ntohs (mp->entry.local_port_stop);
 
   rv = ipsec_spd_action_decode (mp->entry.policy, &p.policy);
 
@@ -191,154 +323,6 @@ out:
   /* *INDENT-ON* */
 }
 
-static int
-ipsec_proto_decode (vl_api_ipsec_proto_t in, ipsec_protocol_t * out)
-{
-  in = clib_net_to_host_u32 (in);
-
-  switch (in)
-    {
-    case IPSEC_API_PROTO_ESP:
-      *out = IPSEC_PROTOCOL_ESP;
-      return (0);
-    case IPSEC_API_PROTO_AH:
-      *out = IPSEC_PROTOCOL_AH;
-      return (0);
-    }
-  return (VNET_API_ERROR_INVALID_PROTOCOL);
-}
-
-static vl_api_ipsec_proto_t
-ipsec_proto_encode (ipsec_protocol_t p)
-{
-  switch (p)
-    {
-    case IPSEC_PROTOCOL_ESP:
-      return clib_host_to_net_u32 (IPSEC_API_PROTO_ESP);
-    case IPSEC_PROTOCOL_AH:
-      return clib_host_to_net_u32 (IPSEC_API_PROTO_AH);
-    }
-  return (VNET_API_ERROR_UNIMPLEMENTED);
-}
-
-static int
-ipsec_crypto_algo_decode (vl_api_ipsec_crypto_alg_t in,
-                         ipsec_crypto_alg_t * out)
-{
-  in = clib_net_to_host_u32 (in);
-
-  switch (in)
-    {
-#define _(v,f,s) case IPSEC_API_CRYPTO_ALG_##f: \
-      *out = IPSEC_CRYPTO_ALG_##f;              \
-      return (0);
-      foreach_ipsec_crypto_alg
-#undef _
-    }
-  return (VNET_API_ERROR_INVALID_ALGORITHM);
-}
-
-static vl_api_ipsec_crypto_alg_t
-ipsec_crypto_algo_encode (ipsec_crypto_alg_t c)
-{
-  switch (c)
-    {
-#define _(v,f,s) case IPSEC_CRYPTO_ALG_##f:                     \
-      return clib_host_to_net_u32(IPSEC_API_CRYPTO_ALG_##f);
-      foreach_ipsec_crypto_alg
-#undef _
-    case IPSEC_CRYPTO_N_ALG:
-      break;
-    }
-  ASSERT (0);
-  return (VNET_API_ERROR_UNIMPLEMENTED);
-}
-
-
-static int
-ipsec_integ_algo_decode (vl_api_ipsec_integ_alg_t in, ipsec_integ_alg_t * out)
-{
-  in = clib_net_to_host_u32 (in);
-
-  switch (in)
-    {
-#define _(v,f,s) case IPSEC_API_INTEG_ALG_##f:  \
-      *out = IPSEC_INTEG_ALG_##f;               \
-      return (0);
-      foreach_ipsec_integ_alg
-#undef _
-    }
-  return (VNET_API_ERROR_INVALID_ALGORITHM);
-}
-
-static vl_api_ipsec_integ_alg_t
-ipsec_integ_algo_encode (ipsec_integ_alg_t i)
-{
-  switch (i)
-    {
-#define _(v,f,s) case IPSEC_INTEG_ALG_##f:                      \
-      return (clib_host_to_net_u32(IPSEC_API_INTEG_ALG_##f));
-      foreach_ipsec_integ_alg
-#undef _
-    case IPSEC_INTEG_N_ALG:
-      break;
-    }
-  ASSERT (0);
-  return (VNET_API_ERROR_UNIMPLEMENTED);
-}
-
-static void
-ipsec_key_decode (const vl_api_key_t * key, ipsec_key_t * out)
-{
-  ipsec_mk_key (out, key->data, key->length);
-}
-
-static void
-ipsec_key_encode (const ipsec_key_t * in, vl_api_key_t * out)
-{
-  out->length = in->len;
-  clib_memcpy (out->data, in->data, out->length);
-}
-
-static ipsec_sa_flags_t
-ipsec_sa_flags_decode (vl_api_ipsec_sad_flags_t in)
-{
-  ipsec_sa_flags_t flags = IPSEC_SA_FLAG_NONE;
-  in = clib_net_to_host_u32 (in);
-
-  if (in & IPSEC_API_SAD_FLAG_USE_ESN)
-    flags |= IPSEC_SA_FLAG_USE_ESN;
-  if (in & IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY)
-    flags |= IPSEC_SA_FLAG_USE_ANTI_REPLAY;
-  if (in & IPSEC_API_SAD_FLAG_IS_TUNNEL)
-    flags |= IPSEC_SA_FLAG_IS_TUNNEL;
-  if (in & IPSEC_API_SAD_FLAG_IS_TUNNEL_V6)
-    flags |= IPSEC_SA_FLAG_IS_TUNNEL_V6;
-  if (in & IPSEC_API_SAD_FLAG_UDP_ENCAP)
-    flags |= IPSEC_SA_FLAG_UDP_ENCAP;
-
-  return (flags);
-}
-
-static vl_api_ipsec_sad_flags_t
-ipsec_sad_flags_encode (const ipsec_sa_t * sa)
-{
-  vl_api_ipsec_sad_flags_t flags = IPSEC_API_SAD_FLAG_NONE;
-
-  if (ipsec_sa_is_set_USE_ESN (sa))
-    flags |= IPSEC_API_SAD_FLAG_USE_ESN;
-  if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
-    flags |= IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY;
-  if (ipsec_sa_is_set_IS_TUNNEL (sa))
-    flags |= IPSEC_API_SAD_FLAG_IS_TUNNEL;
-  if (ipsec_sa_is_set_IS_TUNNEL_V6 (sa))
-    flags |= IPSEC_API_SAD_FLAG_IS_TUNNEL_V6;
-  if (ipsec_sa_is_set_UDP_ENCAP (sa))
-    flags |= IPSEC_API_SAD_FLAG_UDP_ENCAP;
-
-  return clib_host_to_net_u32 (flags);
-}
-
 static void vl_api_ipsec_sad_entry_add_del_t_handler
   (vl_api_ipsec_sad_entry_add_del_t * mp)
 {
@@ -384,12 +368,13 @@ static void vl_api_ipsec_sad_entry_add_del_t_handler
   ip_address_decode (&mp->entry.tunnel_dst, &tun_dst);
 
   if (mp->is_add)
-    rv = ipsec_sa_add (id, spi, proto,
-                      crypto_alg, &crypto_key,
-                      integ_alg, &integ_key, flags,
-                      0, mp->entry.salt, &tun_src, &tun_dst, &sa_index);
+    rv = ipsec_sa_add_and_lock (id, spi, proto,
+                               crypto_alg, &crypto_key,
+                               integ_alg, &integ_key, flags,
+                               0, mp->entry.salt, &tun_src, &tun_dst,
+                               &sa_index, IPSEC_UDP_PORT_NONE);
   else
-    rv = ipsec_sa_del (id);
+    rv = ipsec_sa_unlock_id (id);
 
 #else
   rv = VNET_API_ERROR_UNIMPLEMENTED;
@@ -486,10 +471,10 @@ send_ipsec_spd_details (ipsec_policy_t * p, vl_api_registration_t * reg,
                     &mp->entry.remote_address_start);
   ip_address_encode (&p->raddr.stop, IP46_TYPE_ANY,
                     &mp->entry.remote_address_stop);
-  mp->entry.local_port_start = p->lport.start;
-  mp->entry.local_port_stop = p->lport.stop;
-  mp->entry.remote_port_start = p->rport.start;
-  mp->entry.remote_port_stop = p->rport.stop;
+  mp->entry.local_port_start = htons (p->lport.start);
+  mp->entry.local_port_stop = htons (p->lport.stop);
+  mp->entry.remote_port_start = htons (p->rport.start);
+  mp->entry.remote_port_stop = htons (p->rport.stop);
   mp->entry.protocol = p->protocol;
   mp->entry.policy = ipsec_spd_action_encode (p->policy);
   mp->entry.sa_id = htonl (p->sa_id);
@@ -589,56 +574,157 @@ vl_api_ipsec_spd_interface_dump_t_handler (vl_api_ipsec_spd_interface_dump_t *
 #endif
 }
 
+static u32
+ipsec_tun_mk_input_sa_id (u32 ti)
+{
+  return (0x80000000 | ti);
+}
+
+static u32
+ipsec_tun_mk_output_sa_id (u32 ti)
+{
+  return (0xc0000000 | ti);
+}
+
 static void
 vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t *
                                          mp)
 {
   vl_api_ipsec_tunnel_if_add_del_reply_t *rmp;
-  ipsec_main_t *im = &ipsec_main;
-  vnet_main_t *vnm = im->vnet_main;
   u32 sw_if_index = ~0;
-  ip46_type_t itype;
   int rv;
 
 #if WITH_LIBSSL > 0
-  ipsec_add_del_tunnel_args_t tun;
-
-  clib_memset (&tun, 0, sizeof (ipsec_add_del_tunnel_args_t));
-
-  tun.is_add = mp->is_add;
-  tun.esn = mp->esn;
-  tun.anti_replay = mp->anti_replay;
-  tun.local_spi = ntohl (mp->local_spi);
-  tun.remote_spi = ntohl (mp->remote_spi);
-  tun.crypto_alg = mp->crypto_alg;
-  tun.local_crypto_key_len = mp->local_crypto_key_len;
-  tun.remote_crypto_key_len = mp->remote_crypto_key_len;
-  tun.integ_alg = mp->integ_alg;
-  tun.local_integ_key_len = mp->local_integ_key_len;
-  tun.remote_integ_key_len = mp->remote_integ_key_len;
-  tun.udp_encap = mp->udp_encap;
-  tun.tx_table_id = ntohl (mp->tx_table_id);
-  tun.salt = mp->salt;
-  itype = ip_address_decode (&mp->local_ip, &tun.local_ip);
-  itype = ip_address_decode (&mp->remote_ip, &tun.remote_ip);
-  tun.is_ip6 = (IP46_TYPE_IP6 == itype);
-  memcpy (&tun.local_crypto_key, &mp->local_crypto_key,
-         mp->local_crypto_key_len);
-  memcpy (&tun.remote_crypto_key, &mp->remote_crypto_key,
-         mp->remote_crypto_key_len);
-  memcpy (&tun.local_integ_key, &mp->local_integ_key,
-         mp->local_integ_key_len);
-  memcpy (&tun.remote_integ_key, &mp->remote_integ_key,
-         mp->remote_integ_key_len);
-  tun.renumber = mp->renumber;
-  tun.show_instance = ntohl (mp->show_instance);
-
-  rv = ipsec_add_del_tunnel_if_internal (vnm, &tun, &sw_if_index);
+  ip46_address_t local_ip = ip46_address_initializer;
+  ip46_address_t remote_ip = ip46_address_initializer;
+  ipsec_key_t crypto_key, integ_key;
+  ipsec_sa_flags_t flags;
+  ip46_type_t local_ip_type, remote_ip_type;
+  ipip_transport_t transport;
+  u32 fib_index;
+
+  local_ip_type = ip_address_decode (&mp->local_ip, &local_ip);
+  remote_ip_type = ip_address_decode (&mp->remote_ip, &remote_ip);
+  transport = (IP46_TYPE_IP6 == local_ip_type ?
+              IPIP_TRANSPORT_IP6 : IPIP_TRANSPORT_IP4);
+
+  if (local_ip_type != remote_ip_type)
+    {
+      rv = VNET_API_ERROR_INVALID_VALUE;
+      goto done;
+    }
+
+  flags = IPSEC_SA_FLAG_NONE;
+
+  if (mp->udp_encap)
+    flags |= IPSEC_SA_FLAG_UDP_ENCAP;
+  if (mp->esn)
+    flags |= IPSEC_SA_FLAG_USE_ESN;
+  if (mp->anti_replay)
+    flags |= IPSEC_SA_FLAG_USE_ANTI_REPLAY;
+
+  ipsec_mk_key (&crypto_key, mp->remote_crypto_key,
+               mp->remote_crypto_key_len);
+  ipsec_mk_key (&integ_key, mp->remote_integ_key, mp->remote_integ_key_len);
+  ipsec_mk_key (&crypto_key, mp->local_crypto_key, mp->local_crypto_key_len);
+  ipsec_mk_key (&integ_key, mp->local_integ_key, mp->local_integ_key_len);
+
+  fib_index =
+    fib_table_find (fib_proto_from_ip46 (local_ip_type),
+                   ntohl (mp->tx_table_id));
+
+  if (~0 == fib_index)
+    {
+      rv = VNET_API_ERROR_NO_SUCH_FIB;
+      goto done;
+    }
+
+  if (mp->is_add)
+    {
+      // remote = input, local = output
+      /* create an ip-ip tunnel, then the two SA, then bind them */
+      rv = ipip_add_tunnel (transport,
+                           (mp->renumber ? ntohl (mp->show_instance) : ~0),
+                           &local_ip,
+                           &remote_ip, fib_index,
+                           TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0,
+                           TUNNEL_MODE_P2P, &sw_if_index);
+
+      if (rv)
+       goto done;
+
+      rv = ipsec_sa_add_and_lock (ipsec_tun_mk_input_sa_id (sw_if_index),
+                                 ntohl (mp->remote_spi),
+                                 IPSEC_PROTOCOL_ESP,
+                                 mp->crypto_alg,
+                                 &crypto_key,
+                                 mp->integ_alg,
+                                 &integ_key,
+                                 (flags | IPSEC_SA_FLAG_IS_INBOUND),
+                                 ntohl (mp->tx_table_id),
+                                 mp->salt, &remote_ip, &local_ip, NULL,
+                                 IPSEC_UDP_PORT_NONE);
+
+      if (rv)
+       goto done;
+
+      rv = ipsec_sa_add_and_lock (ipsec_tun_mk_output_sa_id (sw_if_index),
+                                 ntohl (mp->local_spi),
+                                 IPSEC_PROTOCOL_ESP,
+                                 mp->crypto_alg,
+                                 &crypto_key,
+                                 mp->integ_alg,
+                                 &integ_key,
+                                 flags,
+                                 ntohl (mp->tx_table_id),
+                                 mp->salt, &local_ip, &remote_ip, NULL,
+                                 IPSEC_UDP_PORT_NONE);
+
+      if (rv)
+       goto done;
+
+      rv = ipsec_tun_protect_update_one (sw_if_index, NULL,
+                                        ipsec_tun_mk_output_sa_id
+                                        (sw_if_index),
+                                        ipsec_tun_mk_input_sa_id
+                                        (sw_if_index));
+      if (rv)
+       goto done;
+
+      /* the SAs are locked as a result of being used for proection,
+       * they cannot be removed from the API, since they cannot be refered
+       * to by the API. unlock them now, so that if the tunnel is rekeyed
+       * they-ll disapper
+       */
+      ipsec_sa_unlock_id (ipsec_tun_mk_input_sa_id (sw_if_index));
+      ipsec_sa_unlock_id (ipsec_tun_mk_output_sa_id (sw_if_index));
+    }
+  else
+    {
+      /* *INDENT-OFF* */
+      ipip_tunnel_key_t key = {
+       .transport = transport,
+       .fib_index = fib_index,
+       .src = local_ip,
+       .dst = remote_ip
+      };
+      /* *INDENT-ON* */
+
+      ipip_tunnel_t *t = ipip_tunnel_db_find (&key);
+
+      if (NULL != t)
+       {
+         rv = ipsec_tun_protect_del (t->sw_if_index, NULL);
+         ipip_del_tunnel (t->sw_if_index);
+       }
+      else
+       rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+    }
 
 #else
   rv = VNET_API_ERROR_UNIMPLEMENTED;
 #endif
-
+done:
   /* *INDENT-OFF* */
   REPLY_MACRO2 (VL_API_IPSEC_TUNNEL_IF_ADD_DEL_REPLY,
   ({
@@ -647,16 +733,51 @@ vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t *
   /* *INDENT-ON* */
 }
 
-static void
-send_ipsec_sa_details (ipsec_sa_t * sa, vl_api_registration_t * reg,
-                      u32 context, u32 sw_if_index)
+typedef struct ipsec_sa_dump_match_ctx_t_
+{
+  index_t sai;
+  u32 sw_if_index;
+} ipsec_sa_dump_match_ctx_t;
+
+static walk_rc_t
+ipsec_sa_dump_match_sa (index_t itpi, void *arg)
+{
+  ipsec_sa_dump_match_ctx_t *ctx = arg;
+  ipsec_tun_protect_t *itp;
+  index_t sai;
+
+  itp = ipsec_tun_protect_get (itpi);
+
+  if (itp->itp_out_sa == ctx->sai)
+    {
+      ctx->sw_if_index = itp->itp_sw_if_index;
+      return (WALK_STOP);
+    }
+  /* *INDENT-OFF* */
+  FOR_EACH_IPSEC_PROTECT_INPUT_SAI (itp, sai,
+  ({
+    if (sai == ctx->sai)
+      {
+        ctx->sw_if_index = itp->itp_sw_if_index;
+        return (WALK_STOP);
+      }
+  }));
+  /* *INDENT-OFF* */
+
+  return (WALK_CONTINUE);
+}
+
+static walk_rc_t
+send_ipsec_sa_details (ipsec_sa_t * sa, void *arg)
 {
+  ipsec_dump_walk_ctx_t *ctx = arg;
   vl_api_ipsec_sa_details_t *mp;
+  ipsec_main_t *im = &ipsec_main;
 
   mp = vl_msg_api_alloc (sizeof (*mp));
   clib_memset (mp, 0, sizeof (*mp));
   mp->_vl_msg_id = ntohs (VL_API_IPSEC_SA_DETAILS);
-  mp->context = context;
+  mp->context = ctx->context;
 
   mp->entry.sad_id = htonl (sa->id);
   mp->entry.spi = htonl (sa->spi);
@@ -671,6 +792,20 @@ send_ipsec_sa_details (ipsec_sa_t * sa, vl_api_registration_t * reg,
   ipsec_key_encode (&sa->integ_key, &mp->entry.integrity_key);
 
   mp->entry.flags = ipsec_sad_flags_encode (sa);
+  mp->entry.salt = clib_host_to_net_u32 (sa->salt);
+
+  if (ipsec_sa_is_set_IS_PROTECT (sa))
+    {
+      ipsec_sa_dump_match_ctx_t ctx = {
+        .sai = sa - im->sad,
+        .sw_if_index = ~0,
+      };
+      ipsec_tun_protect_walk (ipsec_sa_dump_match_sa, &ctx);
+
+      mp->sw_if_index = htonl (ctx.sw_if_index);
+    }
+  else
+    mp->sw_if_index = ~0;
 
   if (ipsec_sa_is_set_IS_TUNNEL (sa))
     {
@@ -680,8 +815,6 @@ send_ipsec_sa_details (ipsec_sa_t * sa, vl_api_registration_t * reg,
                         &mp->entry.tunnel_dst);
     }
 
-  mp->sw_if_index = htonl (sw_if_index);
-  mp->salt = clib_host_to_net_u32 (sa->salt);
   mp->seq_outbound = clib_host_to_net_u64 (((u64) sa->seq));
   mp->last_seq_inbound = clib_host_to_net_u64 (((u64) sa->last_seq));
   if (ipsec_sa_is_set_USE_ESN (sa))
@@ -692,49 +825,28 @@ send_ipsec_sa_details (ipsec_sa_t * sa, vl_api_registration_t * reg,
   if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
     mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
 
-  vl_api_send_msg (reg, (u8 *) mp);
-}
+  vl_api_send_msg (ctx->reg, (u8 *) mp);
 
+  return (WALK_CONTINUE);
+}
 
 static void
 vl_api_ipsec_sa_dump_t_handler (vl_api_ipsec_sa_dump_t * mp)
 {
   vl_api_registration_t *reg;
-  ipsec_main_t *im = &ipsec_main;
-  vnet_main_t *vnm = im->vnet_main;
-  ipsec_sa_t *sa;
-  ipsec_tunnel_if_t *t;
-  u32 *sa_index_to_tun_if_index = 0;
 
 #if WITH_LIBSSL > 0
   reg = vl_api_client_index_to_registration (mp->client_index);
-  if (!reg || pool_elts (im->sad) == 0)
+  if (!reg)
     return;
 
-  vec_validate_init_empty (sa_index_to_tun_if_index, vec_len (im->sad) - 1,
-                          ~0);
-
-  /* *INDENT-OFF* */
-  pool_foreach (t, im->tunnel_interfaces,
-  ({
-    vnet_hw_interface_t *hi;
-    u32 sw_if_index = ~0;
-
-    hi = vnet_get_hw_interface (vnm, t->hw_if_index);
-    sw_if_index = hi->sw_if_index;
-    sa_index_to_tun_if_index[t->input_sa_index] = sw_if_index;
-    sa_index_to_tun_if_index[t->output_sa_index] = sw_if_index;
-  }));
+  ipsec_dump_walk_ctx_t ctx = {
+    .reg = reg,
+    .context = mp->context,
+  };
 
-  pool_foreach (sa, im->sad,
-  ({
-    if (mp->sa_id == ~(0) || ntohl (mp->sa_id) == sa->id)
-      send_ipsec_sa_details (sa, reg, mp->context,
-                            sa_index_to_tun_if_index[sa - im->sad]);
-  }));
-  /* *INDENT-ON* */
+  ipsec_sa_walk (send_ipsec_sa_details, &ctx);
 
-  vec_free (sa_index_to_tun_if_index);
 #else
   clib_warning ("unimplemented");
 #endif
@@ -744,20 +856,24 @@ static void
 vl_api_ipsec_tunnel_if_set_sa_t_handler (vl_api_ipsec_tunnel_if_set_sa_t * mp)
 {
   vl_api_ipsec_tunnel_if_set_sa_reply_t *rmp;
-  ipsec_main_t *im = &ipsec_main;
-  vnet_main_t *vnm = im->vnet_main;
-  vnet_sw_interface_t *sw;
   int rv;
 
 #if WITH_LIBSSL > 0
-  sw = vnet_get_sw_interface (vnm, ntohl (mp->sw_if_index));
+  VALIDATE_SW_IF_INDEX(mp);
+
+  if (mp->is_outbound)
+    rv = ipsec_tun_protect_update_out (ntohl (mp->sw_if_index), NULL,
+                                       ntohl (mp->sa_id));
+  else
+    rv = ipsec_tun_protect_update_in (ntohl (mp->sw_if_index), NULL,
+                                       ntohl (mp->sa_id));
 
-  rv = ipsec_set_interface_sa (vnm, sw->hw_if_index, ntohl (mp->sa_id),
-                              mp->is_outbound);
 #else
   clib_warning ("unimplemented");
 #endif
 
+  BAD_SW_IF_INDEX_LABEL;
+
   REPLY_MACRO (VL_API_IPSEC_TUNNEL_IF_SET_SA_REPLY);
 }
 
@@ -866,7 +982,7 @@ setup_message_id_table (api_main_t * am)
 static clib_error_t *
 ipsec_api_hookup (vlib_main_t * vm)
 {
-  api_main_t *am = &api_main;
+  api_main_t *am = vlibapi_get_main ();
 
 #define _(N,n)                                                  \
     vl_msg_api_set_handlers(VL_API_##N, #n,                     \
@@ -878,6 +994,13 @@ ipsec_api_hookup (vlib_main_t * vm)
   foreach_vpe_api_msg;
 #undef _
 
+  /*
+   * Adding and deleting SAs is MP safe since when they are added/delete
+   * no traffic is using them
+   */
+  am->is_mp_safe[VL_API_IPSEC_SAD_ENTRY_ADD_DEL] = 1;
+  am->is_mp_safe[VL_API_IPSEC_SAD_ENTRY_ADD_DEL_REPLY] = 1;
+
   /*
    * Set up the (msg_name, crc, message-id) table
    */