Add GTP-U plugin. VPP-694

Basic GTP-U feature

Change-Id: I31226f890a92c5303ac06e112ed7820cae52d9bd
Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>

1 files changed, 498 insertions, 0 deletions

diff --git a/src/plugins/gtpu/gtpu_test.c b/src/plugins/gtpu/gtpu_test.c
new file mode 100644
index 00000000000..91c5c616b74
--- /dev/null
+++ b/src/plugins/gtpu/gtpu_test.c
@@ -0,0 +1,498 @@
+/*
+ * Copyright (c) 2016 Intel and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vat/vat.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+#include <vppinfra/error.h>
+#include <gtpu/gtpu.h>
+
+#define __plugin_msg_base gtpu_test_main.msg_id_base
+#include <vlibapi/vat_helper_macros.h>
+
+
+uword unformat_ip46_address (unformat_input_t * input, va_list * args)
+{
+  ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
+  ip46_type_t type = va_arg (*args, ip46_type_t);
+  if ((type != IP46_TYPE_IP6) &&
+      unformat(input, "%U", unformat_ip4_address, &ip46->ip4)) {
+    ip46_address_mask_ip4(ip46);
+    return 1;
+  } else if ((type != IP46_TYPE_IP4) &&
+      unformat(input, "%U", unformat_ip6_address, &ip46->ip6)) {
+    return 1;
+  }
+  return 0;
+}
+uword unformat_ip46_prefix (unformat_input_t * input, va_list * args)
+{
+  ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
+  u8 *len = va_arg (*args, u8 *);
+  ip46_type_t type = va_arg (*args, ip46_type_t);
+
+  u32 l;
+  if ((type != IP46_TYPE_IP6) && unformat(input, "%U/%u", unformat_ip4_address, &ip46->ip4, &l)) {
+    if (l > 32)
+      return 0;
+    *len = l + 96;
+    ip46->pad[0] = ip46->pad[1] = ip46->pad[2] = 0;
+  } else if ((type != IP46_TYPE_IP4) && unformat(input, "%U/%u", unformat_ip6_address, &ip46->ip6, &l)) {
+    if (l > 128)
+      return 0;
+    *len = l;
+  } else {
+    return 0;
+  }
+  return 1;
+}
+/////////////////////////
+
+#define vl_msg_id(n,h) n,
+typedef enum {
+#include <gtpu/gtpu.api.h>
+    /* We'll want to know how many messages IDs we need... */
+    VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+/* define message structures */
+#define vl_typedefs
+#include <gtpu/gtpu.api.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun             /* define message structures */
+#include <gtpu/gtpu.api.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <gtpu/gtpu.api.h>
+#undef vl_printfun
+
+/* Get the API version number. */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <gtpu/gtpu.api.h>
+#undef vl_api_version
+
+typedef struct {
+    /* API message ID base */
+    u16 msg_id_base;
+    vat_main_t *vat_main;
+} gtpu_test_main_t;
+
+gtpu_test_main_t gtpu_test_main;
+
+static void vl_api_gtpu_add_del_tunnel_reply_t_handler
+  (vl_api_gtpu_add_del_tunnel_reply_t * mp)
+{
+  vat_main_t *vam = &vat_main;
+  i32 retval = ntohl (mp->retval);
+  if (vam->async_mode)
+    {
+      vam->async_errors += (retval < 0);
+    }
+  else
+    {
+      vam->retval = retval;
+      vam->sw_if_index = ntohl (mp->sw_if_index);
+      vam->result_ready = 1;
+    }
+}
+
+
+#define foreach_standard_reply_retval_handler   \
+    _(sw_interface_set_gtpu_bypass_reply)
+
+#define _(n)                                            \
+    static void vl_api_##n##_t_handler                  \
+    (vl_api_##n##_t * mp)                               \
+    {                                                   \
+        vat_main_t * vam = gtpu_test_main.vat_main;   \
+        i32 retval = ntohl(mp->retval);                 \
+        if (vam->async_mode) {                          \
+            vam->async_errors += (retval < 0);          \
+        } else {                                        \
+            vam->retval = retval;                       \
+            vam->result_ready = 1;                      \
+        }                                               \
+    }
+  foreach_standard_reply_retval_handler;
+#undef _
+
+/*
+ * Table of message reply handlers, must include boilerplate handlers
+ * we just generated
+ */
+#define foreach_vpe_api_reply_msg                               \
+  _(SW_INTERFACE_SET_GTPU_BYPASS_REPLY, sw_interface_set_gtpu_bypass_reply) \
+  _(GTPU_ADD_DEL_TUNNEL_REPLY, gtpu_add_del_tunnel_reply)               \
+  _(GTPU_TUNNEL_DETAILS, gtpu_tunnel_details)
+
+
+static uword
+api_unformat_sw_if_index (unformat_input_t * input, va_list * args)
+{
+  vat_main_t *vam = va_arg (*args, vat_main_t *);
+  u32 *result = va_arg (*args, u32 *);
+  u8 *if_name;
+  uword *p;
+
+  if (!unformat (input, "%s", &if_name))
+    return 0;
+
+  p = hash_get_mem (vam->sw_if_index_by_interface_name, if_name);
+  if (p == 0)
+    return 0;
+  *result = p[0];
+  return 1;
+}
+
+static int
+api_sw_interface_set_gtpu_bypass (vat_main_t * vam)
+{
+  unformat_input_t *i = vam->input;
+  vl_api_sw_interface_set_gtpu_bypass_t *mp;
+  u32 sw_if_index = 0;
+  u8 sw_if_index_set = 0;
+  u8 is_enable = 1;
+  u8 is_ipv6 = 0;
+  int ret;
+
+  /* Parse args required to build the message */
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (i, "%U", api_unformat_sw_if_index, vam, &sw_if_index))
+      sw_if_index_set = 1;
+      else if (unformat (i, "sw_if_index %d", &sw_if_index))
+      sw_if_index_set = 1;
+      else if (unformat (i, "enable"))
+      is_enable = 1;
+      else if (unformat (i, "disable"))
+      is_enable = 0;
+      else if (unformat (i, "ip4"))
+      is_ipv6 = 0;
+      else if (unformat (i, "ip6"))
+      is_ipv6 = 1;
+      else
+      break;
+    }
+
+  if (sw_if_index_set == 0)
+    {
+      errmsg ("missing interface name or sw_if_index");
+      return -99;
+    }
+
+  /* Construct the API message */
+  M (SW_INTERFACE_SET_GTPU_BYPASS, mp);
+
+  mp->sw_if_index = ntohl (sw_if_index);
+  mp->enable = is_enable;
+  mp->is_ipv6 = is_ipv6;
+
+  /* send it... */
+  S (mp);
+
+  /* Wait for a reply... */
+  W (ret);
+  return ret;
+}
+
+static uword unformat_gtpu_decap_next
+  (unformat_input_t * input, va_list * args)
+{
+  u32 *result = va_arg (*args, u32 *);
+  u32 tmp;
+
+  if (unformat (input, "l2"))
+    *result = GTPU_INPUT_NEXT_L2_INPUT;
+  else if (unformat (input, "%d", &tmp))
+    *result = tmp;
+  else
+    return 0;
+  return 1;
+}
+
+static int
+api_gtpu_add_del_tunnel (vat_main_t * vam)
+{
+  unformat_input_t *line_input = vam->input;
+  vl_api_gtpu_add_del_tunnel_t *mp;
+  ip46_address_t src, dst;
+  u8 is_add = 1;
+  u8 ipv4_set = 0, ipv6_set = 0;
+  u8 src_set = 0;
+  u8 dst_set = 0;
+  u8 grp_set = 0;
+  u32 mcast_sw_if_index = ~0;
+  u32 encap_vrf_id = 0;
+  u32 decap_next_index = ~0;
+  u32 teid = 0;
+  int ret;
+
+  /* Can't "universally zero init" (={0}) due to GCC bug 53119 */
+  memset (&src, 0, sizeof src);
+  memset (&dst, 0, sizeof dst);
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "del"))
+      is_add = 0;
+      else
+      if (unformat (line_input, "src %U", unformat_ip4_address, &src.ip4))
+      {
+	ipv4_set = 1;
+	src_set = 1;
+      }
+      else
+      if (unformat (line_input, "dst %U", unformat_ip4_address, &dst.ip4))
+      {
+	ipv4_set = 1;
+	dst_set = 1;
+      }
+      else
+      if (unformat (line_input, "src %U", unformat_ip6_address, &src.ip6))
+      {
+	ipv6_set = 1;
+	src_set = 1;
+      }
+      else
+      if (unformat (line_input, "dst %U", unformat_ip6_address, &dst.ip6))
+      {
+	ipv6_set = 1;
+	dst_set = 1;
+      }
+      else if (unformat (line_input, "group %U %U",
+		       unformat_ip4_address, &dst.ip4,
+		       api_unformat_sw_if_index, vam, &mcast_sw_if_index))
+      {
+	grp_set = dst_set = 1;
+	ipv4_set = 1;
+      }
+      else if (unformat (line_input, "group %U",
+		       unformat_ip4_address, &dst.ip4))
+      {
+	grp_set = dst_set = 1;
+	ipv4_set = 1;
+      }
+      else if (unformat (line_input, "group %U %U",
+		       unformat_ip6_address, &dst.ip6,
+		       api_unformat_sw_if_index, vam, &mcast_sw_if_index))
+      {
+	grp_set = dst_set = 1;
+	ipv6_set = 1;
+      }
+      else if (unformat (line_input, "group %U",
+		       unformat_ip6_address, &dst.ip6))
+      {
+	grp_set = dst_set = 1;
+	ipv6_set = 1;
+      }
+      else
+      if (unformat (line_input, "mcast_sw_if_index %u", &mcast_sw_if_index))
+      ;
+      else if (unformat (line_input, "encap-vrf-id %d", &encap_vrf_id))
+      ;
+      else if (unformat (line_input, "decap-next %U",
+		       unformat_gtpu_decap_next, &decap_next_index))
+      ;
+      else if (unformat (line_input, "teid %d", &teid))
+      ;
+      else
+      {
+	errmsg ("parse error '%U'", format_unformat_error, line_input);
+	return -99;
+      }
+    }
+
+  if (src_set == 0)
+    {
+      errmsg ("tunnel src address not specified");
+      return -99;
+    }
+  if (dst_set == 0)
+    {
+      errmsg ("tunnel dst address not specified");
+      return -99;
+    }
+
+  if (grp_set && !ip46_address_is_multicast (&dst))
+    {
+      errmsg ("tunnel group address not multicast");
+      return -99;
+    }
+  if (grp_set && mcast_sw_if_index == ~0)
+    {
+      errmsg ("tunnel nonexistent multicast device");
+      return -99;
+    }
+  if (grp_set == 0 && ip46_address_is_multicast (&dst))
+    {
+      errmsg ("tunnel dst address must be unicast");
+      return -99;
+    }
+
+
+  if (ipv4_set && ipv6_set)
+    {
+      errmsg ("both IPv4 and IPv6 addresses specified");
+      return -99;
+    }
+
+  M (GTPU_ADD_DEL_TUNNEL, mp);
+
+  if (ipv6_set)
+    {
+      clib_memcpy (mp->src_address, &src.ip6, sizeof (src.ip6));
+      clib_memcpy (mp->dst_address, &dst.ip6, sizeof (dst.ip6));
+    }
+  else
+    {
+      clib_memcpy (mp->src_address, &src.ip4, sizeof (src.ip4));
+      clib_memcpy (mp->dst_address, &dst.ip4, sizeof (dst.ip4));
+    }
+  mp->encap_vrf_id = ntohl (encap_vrf_id);
+  mp->decap_next_index = ntohl (decap_next_index);
+  mp->mcast_sw_if_index = ntohl (mcast_sw_if_index);
+  mp->teid = ntohl (teid);
+  mp->is_add = is_add;
+  mp->is_ipv6 = ipv6_set;
+
+  S (mp);
+  W (ret);
+  return ret;
+}
+
+static void vl_api_gtpu_tunnel_details_t_handler
+  (vl_api_gtpu_tunnel_details_t * mp)
+{
+  vat_main_t *vam = &vat_main;
+  ip46_address_t src = to_ip46 (mp->is_ipv6, mp->dst_address);
+  ip46_address_t dst = to_ip46 (mp->is_ipv6, mp->src_address);
+
+  print (vam->ofp, "%11d%24U%24U%14d%18d%13d%19d",
+       ntohl (mp->sw_if_index),
+       format_ip46_address, &src, IP46_TYPE_ANY,
+       format_ip46_address, &dst, IP46_TYPE_ANY,
+       ntohl (mp->encap_vrf_id),
+       ntohl (mp->decap_next_index), ntohl (mp->teid),
+       ntohl (mp->mcast_sw_if_index));
+}
+
+static int
+api_gtpu_tunnel_dump (vat_main_t * vam)
+{
+  unformat_input_t *i = vam->input;
+  vl_api_gtpu_tunnel_dump_t *mp;
+  u32 sw_if_index;
+  u8 sw_if_index_set = 0;
+  int ret;
+
+  /* Parse args required to build the message */
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (i, "sw_if_index %d", &sw_if_index))
+      sw_if_index_set = 1;
+      else
+      break;
+    }
+
+  if (sw_if_index_set == 0)
+    {
+      sw_if_index = ~0;
+    }
+
+  if (!vam->json_output)
+    {
+      print (vam->ofp, "%11s%24s%24s%14s%18s%13s%19s",
+	   "sw_if_index", "src_address", "dst_address",
+	   "encap_vrf_id", "decap_next_index", "teid", "mcast_sw_if_index");
+    }
+
+  /* Get list of gtpu-tunnel interfaces */
+  M (GTPU_TUNNEL_DUMP, mp);
+
+  mp->sw_if_index = htonl (sw_if_index);
+
+  S (mp);
+
+  W (ret);
+  return ret;
+}
+
+/*
+ * List of messages that the api test plugin sends,
+ * and that the data plane plugin processes
+ */
+#define foreach_vpe_api_msg                                            \
+_(sw_interface_set_gtpu_bypass,                                        \
+      "<intfc> | sw_if_index <id> [ip4 | ip6] [enable | disable]")     \
+_(gtpu_add_del_tunnel,                                                 \
+        "src <ip-addr> { dst <ip-addr> | group <mcast-ip-addr>\n"      \
+        "{ <intfc> | mcast_sw_if_index <nn> } }\n"                     \
+        "teid <teid> [encap-vrf-id <nn>] [decap-next <l2|nn>] [del]")  \
+_(gtpu_tunnel_dump, "[<intfc> | sw_if_index <nn>]")                    \
+
+static void
+gtpu_vat_api_hookup (vat_main_t *vam)
+{
+  gtpu_test_main_t * gtm = &gtpu_test_main;
+  /* Hook up handlers for replies from the data plane plug-in */
+#define _(N,n)                                                  \
+  vl_msg_api_set_handlers((VL_API_##N + gtm->msg_id_base),       \
+                          #n,                                   \
+                          vl_api_##n##_t_handler,               \
+                          vl_noop_handler,                      \
+                          vl_api_##n##_t_endian,                \
+                          vl_api_##n##_t_print,                 \
+                          sizeof(vl_api_##n##_t), 1);
+  foreach_vpe_api_reply_msg;
+#undef _
+
+  /* API messages we can send */
+#define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n);
+  foreach_vpe_api_msg;
+#undef _
+
+  /* Help strings */
+#define _(n,h) hash_set_mem (vam->help_by_name, #n, h);
+  foreach_vpe_api_msg;
+#undef _
+}
+
+clib_error_t * vat_plugin_register (vat_main_t *vam)
+{
+  gtpu_test_main_t * gtm = &gtpu_test_main;
+
+  u8 * name;
+
+  gtm->vat_main = vam;
+
+  /* Ask the vpp engine for the first assigned message-id */
+  name = format (0, "gtpu_%08x%c", api_version, 0);
+  gtm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
+
+  if (gtm->msg_id_base != (u16) ~0)
+    gtpu_vat_api_hookup (vam);
+
+  vec_free(name);
+
+  return 0;
+}