ipsec: Tunnel SA DSCP behaviour
[vpp.git] / src / vnet / ipsec / ipsec_api.c
index 87f5931..7003791 100644 (file)
 #include <vnet/ip/ip.h>
 #include <vnet/ip/ip_types_api.h>
 #include <vnet/ipsec/ipsec_types_api.h>
+#include <vnet/tunnel/tunnel_types_api.h>
 #include <vnet/fib/fib.h>
 #include <vnet/ipip/ipip.h>
+#include <vnet/tunnel/tunnel_types_api.h>
 
 #include <vnet/vnet_msg_enum.h>
 
 #if WITH_LIBSSL > 0
 #include <vnet/ipsec/ipsec.h>
 #include <vnet/ipsec/ipsec_tun.h>
+#include <vnet/ipsec/ipsec_itf.h>
 #endif /* IPSEC */
 
 #define vl_typedefs            /* define message structures */
@@ -56,17 +59,23 @@ _(IPSEC_SPD_ADD_DEL, ipsec_spd_add_del)                         \
 _(IPSEC_INTERFACE_ADD_DEL_SPD, ipsec_interface_add_del_spd)     \
 _(IPSEC_SPD_ENTRY_ADD_DEL, ipsec_spd_entry_add_del)             \
 _(IPSEC_SAD_ENTRY_ADD_DEL, ipsec_sad_entry_add_del)             \
+_(IPSEC_SAD_ENTRY_ADD_DEL_V2, ipsec_sad_entry_add_del_v2)       \
 _(IPSEC_SA_DUMP, ipsec_sa_dump)                                 \
+_(IPSEC_SA_V2_DUMP, ipsec_sa_v2_dump)                           \
 _(IPSEC_SPDS_DUMP, ipsec_spds_dump)                             \
 _(IPSEC_SPD_DUMP, ipsec_spd_dump)                               \
 _(IPSEC_SPD_INTERFACE_DUMP, ipsec_spd_interface_dump)          \
+_(IPSEC_ITF_CREATE, ipsec_itf_create)                           \
+_(IPSEC_ITF_DELETE, ipsec_itf_delete)                           \
+_(IPSEC_ITF_DUMP, ipsec_itf_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_TUNNEL_PROTECT_UPDATE, ipsec_tunnel_protect_update)     \
 _(IPSEC_TUNNEL_PROTECT_DEL, ipsec_tunnel_protect_del)           \
-_(IPSEC_TUNNEL_PROTECT_DUMP, ipsec_tunnel_protect_dump)
+_(IPSEC_TUNNEL_PROTECT_DUMP, ipsec_tunnel_protect_dump)         \
+_(IPSEC_SET_ASYNC_MODE, ipsec_set_async_mode)
 
 static void
 vl_api_ipsec_spd_add_del_t_handler (vl_api_ipsec_spd_add_del_t * mp)
@@ -116,6 +125,7 @@ static void vl_api_ipsec_tunnel_protect_update_t_handler
   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);
@@ -127,7 +137,9 @@ static void vl_api_ipsec_tunnel_protect_update_t_handler
   for (ii = 0; ii < mp->tunnel.n_sa_in; ii++)
     vec_add1 (sa_ins, ntohl (mp->tunnel.sa_in[ii]));
 
-  rv = ipsec_tun_protect_update (sw_if_index,
+  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;
@@ -143,15 +155,17 @@ static void vl_api_ipsec_tunnel_protect_del_t_handler
 {
   vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main ();
   vl_api_ipsec_tunnel_protect_del_reply_t *rmp;
-  int rv;
+  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
-  rv = ipsec_tun_protect_del (sw_if_index);
+  ip_address_decode2 (&mp->nh, &nh);
+  rv = ipsec_tun_protect_del (sw_if_index, &nh);
 #else
   rv = VNET_API_ERROR_UNIMPLEMENTED;
 #endif
@@ -173,24 +187,26 @@ 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;
+  u32 ii = 0;
+  ipsec_sa_t *sa;
 
   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);
+  sa = ipsec_sa_get (itp->itp_out_sa);
+  mp->tun.sa_out = htonl (sa->id);
   mp->tun.n_sa_in = itp->itp_n_sa_in;
   /* *INDENT-OFF* */
-  FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
+  FOR_EACH_IPSEC_PROTECT_INPUT_SA(itp, sa,
   ({
-    mp->tun.sa_in[ii++] = htonl (sai);
+    mp->tun.sa_in[ii++] = htonl (sa->id);
   }));
   /* *INDENT-ON* */
 
@@ -224,12 +240,8 @@ vl_api_ipsec_tunnel_protect_dump_t_handler (vl_api_ipsec_tunnel_protect_dump_t
     }
   else
     {
-      index_t itpi;
-
-      itpi = ipsec_tun_protect_find (sw_if_index);
-
-      if (INDEX_INVALID != itpi)
-       send_ipsec_tunnel_protect_details (itpi, &ctx);
+      ipsec_tun_protect_walk_itf (sw_if_index,
+                                 send_ipsec_tunnel_protect_details, &ctx);
     }
 #else
   clib_warning ("unimplemented");
@@ -371,7 +383,11 @@ static void vl_api_ipsec_sad_entry_add_del_t_handler
                                crypto_alg, &crypto_key,
                                integ_alg, &integ_key, flags,
                                0, mp->entry.salt, &tun_src, &tun_dst,
-                               &sa_index);
+                               TUNNEL_ENCAP_DECAP_FLAG_NONE,
+                               IP_DSCP_CS0,
+                               &sa_index,
+                               htons (mp->entry.udp_src_port),
+                               htons (mp->entry.udp_dst_port));
   else
     rv = ipsec_sa_unlock_id (id);
 
@@ -388,6 +404,83 @@ out:
   /* *INDENT-ON* */
 }
 
+static void vl_api_ipsec_sad_entry_add_del_v2_t_handler
+  (vl_api_ipsec_sad_entry_add_del_v2_t * mp)
+{
+  vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main ();
+  vl_api_ipsec_sad_entry_add_del_v2_reply_t *rmp;
+  ip46_address_t tun_src = { }, tun_dst =
+  {
+  };
+  tunnel_encap_decap_flags_t tunnel_flags;
+  ipsec_key_t crypto_key, integ_key;
+  ipsec_crypto_alg_t crypto_alg;
+  ipsec_integ_alg_t integ_alg;
+  ipsec_protocol_t proto;
+  ipsec_sa_flags_t flags;
+  u32 id, spi, sa_index = ~0;
+  int rv;
+
+#if WITH_LIBSSL > 0
+
+  id = ntohl (mp->entry.sad_id);
+  spi = ntohl (mp->entry.spi);
+
+  rv = ipsec_proto_decode (mp->entry.protocol, &proto);
+
+  if (rv)
+    goto out;
+
+  rv = ipsec_crypto_algo_decode (mp->entry.crypto_algorithm, &crypto_alg);
+
+  if (rv)
+    goto out;
+
+  rv = ipsec_integ_algo_decode (mp->entry.integrity_algorithm, &integ_alg);
+
+  if (rv)
+    goto out;
+
+  rv =
+    tunnel_encap_decap_flags_decode (mp->entry.tunnel_flags, &tunnel_flags);
+
+  if (rv)
+    goto out;
+
+  ipsec_key_decode (&mp->entry.crypto_key, &crypto_key);
+  ipsec_key_decode (&mp->entry.integrity_key, &integ_key);
+
+  flags = ipsec_sa_flags_decode (mp->entry.flags);
+
+  ip_address_decode (&mp->entry.tunnel_src, &tun_src);
+  ip_address_decode (&mp->entry.tunnel_dst, &tun_dst);
+
+  if (mp->is_add)
+    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,
+                               tunnel_flags,
+                               ip_dscp_decode (mp->entry.dscp),
+                               &sa_index,
+                               htons (mp->entry.udp_src_port),
+                               htons (mp->entry.udp_dst_port));
+  else
+    rv = ipsec_sa_unlock_id (id);
+
+#else
+  rv = VNET_API_ERROR_UNIMPLEMENTED;
+#endif
+
+out:
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_IPSEC_SAD_ENTRY_ADD_DEL_V2_REPLY,
+  {
+    rmp->stat_index = htonl (sa_index);
+  });
+  /* *INDENT-ON* */
+}
+
 static void
 send_ipsec_spds_details (ipsec_spd_t * spd, vl_api_registration_t * reg,
                         u32 context)
@@ -647,7 +740,7 @@ vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t *
                            &local_ip,
                            &remote_ip, fib_index,
                            TUNNEL_ENCAP_DECAP_FLAG_NONE, IP_DSCP_CS0,
-                           &sw_if_index);
+                           TUNNEL_MODE_P2P, &sw_if_index);
 
       if (rv)
        goto done;
@@ -661,7 +754,10 @@ vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t *
                                  &integ_key,
                                  (flags | IPSEC_SA_FLAG_IS_INBOUND),
                                  ntohl (mp->tx_table_id),
-                                 mp->salt, &remote_ip, &local_ip, NULL);
+                                 mp->salt, &remote_ip, &local_ip,
+                                 TUNNEL_ENCAP_DECAP_FLAG_NONE,
+                                 IP_DSCP_CS0, NULL,
+                                 IPSEC_UDP_PORT_NONE, IPSEC_UDP_PORT_NONE);
 
       if (rv)
        goto done;
@@ -675,12 +771,15 @@ vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t *
                                  &integ_key,
                                  flags,
                                  ntohl (mp->tx_table_id),
-                                 mp->salt, &local_ip, &remote_ip, NULL);
+                                 mp->salt, &local_ip, &remote_ip,
+                                 TUNNEL_ENCAP_DECAP_FLAG_NONE,
+                                 IP_DSCP_CS0, NULL,
+                                 IPSEC_UDP_PORT_NONE, IPSEC_UDP_PORT_NONE);
 
       if (rv)
        goto done;
 
-      rv = ipsec_tun_protect_update_one (sw_if_index,
+      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
@@ -711,7 +810,7 @@ vl_api_ipsec_tunnel_if_add_del_t_handler (vl_api_ipsec_tunnel_if_add_del_t *
 
       if (NULL != t)
        {
-         rv = ipsec_tun_protect_del (t->sw_if_index);
+         rv = ipsec_tun_protect_del (t->sw_if_index, NULL);
          ipip_del_tunnel (t->sw_if_index);
        }
       else
@@ -730,6 +829,43 @@ done:
   /* *INDENT-ON* */
 }
 
+static void
+vl_api_ipsec_itf_create_t_handler (vl_api_ipsec_itf_create_t * mp)
+{
+  vl_api_ipsec_itf_create_reply_t *rmp;
+  tunnel_mode_t mode;
+  u32 sw_if_index = ~0;
+  int rv;
+
+  rv = tunnel_mode_decode (mp->itf.mode, &mode);
+
+  if (!rv)
+    rv = ipsec_itf_create (ntohl (mp->itf.user_instance), mode, &sw_if_index);
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_IPSEC_ITF_CREATE_REPLY,
+  ({
+    rmp->sw_if_index = htonl (sw_if_index);
+  }));
+  /* *INDENT-ON* */
+}
+
+static void
+vl_api_ipsec_itf_delete_t_handler (vl_api_ipsec_itf_delete_t * mp)
+{
+  vl_api_ipsec_itf_delete_reply_t *rmp;
+  int rv;
+
+  rv = ipsec_itf_delete (ntohl (mp->sw_if_index));
+
+  REPLY_MACRO (VL_API_IPSEC_ITF_DELETE_REPLY);
+}
+
+static void
+vl_api_ipsec_itf_dump_t_handler (vl_api_ipsec_itf_dump_t * mp)
+{
+}
+
 typedef struct ipsec_sa_dump_match_ctx_t_
 {
   index_t sai;
@@ -811,6 +947,11 @@ send_ipsec_sa_details (ipsec_sa_t * sa, void *arg)
       ip_address_encode (&sa->tunnel_dst_addr, IP46_TYPE_ANY,
                         &mp->entry.tunnel_dst);
     }
+  if (ipsec_sa_is_set_UDP_ENCAP (sa))
+    {
+      mp->entry.udp_src_port = sa->udp_hdr.src_port;
+      mp->entry.udp_dst_port = sa->udp_hdr.dst_port;
+    }
 
   mp->seq_outbound = clib_host_to_net_u64 (((u64) sa->seq));
   mp->last_seq_inbound = clib_host_to_net_u64 (((u64) sa->last_seq));
@@ -822,6 +963,8 @@ send_ipsec_sa_details (ipsec_sa_t * sa, void *arg)
   if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
     mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
 
+  mp->stat_index = clib_host_to_net_u32 (sa->stat_index);
+
   vl_api_send_msg (ctx->reg, (u8 *) mp);
 
   return (WALK_CONTINUE);
@@ -849,6 +992,101 @@ vl_api_ipsec_sa_dump_t_handler (vl_api_ipsec_sa_dump_t * mp)
 #endif
 }
 
+static walk_rc_t
+send_ipsec_sa_v2_details (ipsec_sa_t * sa, void *arg)
+{
+  ipsec_dump_walk_ctx_t *ctx = arg;
+  vl_api_ipsec_sa_v2_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_V2_DETAILS);
+  mp->context = ctx->context;
+
+  mp->entry.sad_id = htonl (sa->id);
+  mp->entry.spi = htonl (sa->spi);
+  mp->entry.protocol = ipsec_proto_encode (sa->protocol);
+  mp->entry.tx_table_id =
+    htonl (fib_table_get_table_id (sa->tx_fib_index, FIB_PROTOCOL_IP4));
+
+  mp->entry.crypto_algorithm = ipsec_crypto_algo_encode (sa->crypto_alg);
+  ipsec_key_encode (&sa->crypto_key, &mp->entry.crypto_key);
+
+  mp->entry.integrity_algorithm = ipsec_integ_algo_encode (sa->integ_alg);
+  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))
+    {
+      ip_address_encode (&sa->tunnel_src_addr, IP46_TYPE_ANY,
+                        &mp->entry.tunnel_src);
+      ip_address_encode (&sa->tunnel_dst_addr, IP46_TYPE_ANY,
+                        &mp->entry.tunnel_dst);
+    }
+  if (ipsec_sa_is_set_UDP_ENCAP (sa))
+    {
+      mp->entry.udp_src_port = sa->udp_hdr.src_port;
+      mp->entry.udp_dst_port = sa->udp_hdr.dst_port;
+    }
+
+  mp->entry.tunnel_flags = tunnel_encap_decap_flags_encode (sa->tunnel_flags);
+  mp->entry.dscp = ip_dscp_encode (sa->dscp);
+
+  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))
+    {
+      mp->seq_outbound |= (u64) (clib_host_to_net_u32 (sa->seq_hi));
+      mp->last_seq_inbound |= (u64) (clib_host_to_net_u32 (sa->last_seq_hi));
+    }
+  if (ipsec_sa_is_set_USE_ANTI_REPLAY (sa))
+    mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
+
+  mp->stat_index = clib_host_to_net_u32 (sa->stat_index);
+
+  vl_api_send_msg (ctx->reg, (u8 *) mp);
+
+  return (WALK_CONTINUE);
+}
+
+static void
+vl_api_ipsec_sa_v2_dump_t_handler (vl_api_ipsec_sa_dump_t * mp)
+{
+  vl_api_registration_t *reg;
+
+#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,
+  };
+
+  ipsec_sa_walk (send_ipsec_sa_v2_details, &ctx);
+
+#else
+  clib_warning ("unimplemented");
+#endif
+}
+
 static void
 vl_api_ipsec_tunnel_if_set_sa_t_handler (vl_api_ipsec_tunnel_if_set_sa_t * mp)
 {
@@ -859,10 +1097,10 @@ vl_api_ipsec_tunnel_if_set_sa_t_handler (vl_api_ipsec_tunnel_if_set_sa_t * mp)
   VALIDATE_SW_IF_INDEX(mp);
 
   if (mp->is_outbound)
-    rv = ipsec_tun_protect_update_out (ntohl (mp->sw_if_index),
+    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),
+    rv = ipsec_tun_protect_update_in (ntohl (mp->sw_if_index), NULL,
                                        ntohl (mp->sa_id));
 
 #else
@@ -957,6 +1195,18 @@ done:
   REPLY_MACRO (VL_API_IPSEC_SELECT_BACKEND_REPLY);
 }
 
+static void
+vl_api_ipsec_set_async_mode_t_handler (vl_api_ipsec_set_async_mode_t * mp)
+{
+  vl_api_ipsec_set_async_mode_reply_t *rmp;
+  int rv = 0;
+
+  vnet_crypto_request_async_mode (mp->async_enable);
+  ipsec_set_async_mode (mp->async_enable);
+
+  REPLY_MACRO (VL_API_IPSEC_SET_ASYNC_MODE_REPLY);
+}
+
 /*
  * ipsec_api_hookup
  * Add vpe's API message handlers to the table.
@@ -991,13 +1241,6 @@ 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
    */