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/*
 * memif VAT support
 *
 * Copyright (c) 2017 Cisco 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 <inttypes.h>

#include <vat/vat.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>

#include <vppinfra/error.h>
#include <vnet/ip/ip.h>
#include <memif/memif.h>
#include <memif/private.h>

#define __plugin_msg_base memif_test_main.msg_id_base
#include <vlibapi/vat_helper_macros.h>

/* declare message IDs */
#include <memif/memif_msg_enum.h>

/* Get CRC codes of the messages defined outside of this plugin */
#define vl_msg_name_crc_list
#include <vpp/api/vpe_all_api_h.h>
#undef vl_msg_name_crc_list

/* define message structures */
#define vl_typedefs
#include <vpp/api/vpe_all_api_h.h>
#include <memif/memif_all_api_h.h>
#undef vl_typedefs

/* declare message handlers for each api */

#define vl_endianfun		/* define message structures */
#include <memif/memif_all_api_h.h>
#undef vl_endianfun

/* instantiate all the print functions we know about */
#define vl_print(handle, ...)
#define vl_printfun
#include <memif/memif_all_api_h.h>
#undef vl_printfun

/* Get the API version number. */
#define vl_api_version(n,v) static u32 api_version=(v);
#include <memif/memif_all_api_h.h>
#undef vl_api_version

typedef struct
{
  /* API message ID base */
  u16 msg_id_base;
  u32 ping_id;
  vat_main_t *vat_main;
} memif_test_main_t;

memif_test_main_t memif_test_main;

/* standard reply handlers */
#define foreach_standard_reply_retval_handler           \
_(memif_delete_reply)

#define _(n)                                            \
    static void vl_api_##n##_t_handler                  \
    (vl_api_##n##_t * mp)                               \
    {                                                   \
        vat_main_t * vam = memif_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                       \
_(MEMIF_CREATE_REPLY, memif_create_reply)               \
_(MEMIF_DELETE_REPLY, memif_delete_reply)               \
_(MEMIF_DETAILS, memif_details)

static uword
unformat_memif_queues (unformat_input_t * input, va_list * args)
{
  u32 *rx_queues = va_arg (*args, u32 *);
  u32 *tx_queues = va_arg (*args, u32 *);

  if (unformat (input, "rx-queues %u", rx_queues))
    ;
  if (unformat (input, "tx-queues %u", tx_queues))
    ;

  return 1;
}

/* memif-create API */
static int
api_memif_create (vat_main_t * vam)
{
  unformat_input_t *i = vam->input;
  vl_api_memif_create_t *mp;
  u32 id = 0;
  u8 *socket_filename = 0;
  u8 *secret = 0;
  u8 role = 1;
  u32 ring_size = 0;
  u32 buffer_size = 0;
  u8 hw_addr[6] = { 0 };
  u32 rx_queues = MEMIF_DEFAULT_RX_QUEUES;
  u32 tx_queues = MEMIF_DEFAULT_TX_QUEUES;
  int ret;
  u8 mode = MEMIF_INTERFACE_MODE_ETHERNET;

  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (i, "id %u", &id))
	;
      else if (unformat (i, "socket %s", &socket_filename))
	;
      else if (unformat (i, "secret %s", &secret))
	;
      else if (unformat (i, "ring_size %u", &ring_size))
	;
      else if (unformat (i, "buffer_size %u", &buffer_size))
	;
      else if (unformat (i, "master"))
	role = 0;
      else if (unformat (i, "slave %U",
			 unformat_memif_queues, &rx_queues, &tx_queues))
	role = 1;
      else if (unformat (i, "mode ip"))
	mode = MEMIF_INTERFACE_MODE_IP;
      else if (unformat (i, "hw_addr %U", unformat_ethernet_address, hw_addr))
	;
      else
	{
	  clib_warning ("unknown input '%U'", format_unformat_error, i);
	  return -99;
	}
    }

  if (!is_pow2 (ring_size))
    {
      errmsg ("ring size must be power of 2\n");
      return -99;
    }

  if (rx_queues > 255 || rx_queues < 1)
    {
      errmsg ("rx queue must be between 1 - 255\n");
      return -99;
    }

  if (tx_queues > 255 || tx_queues < 1)
    {
      errmsg ("tx queue must be between 1 - 255\n");
      return -99;
    }

  M (MEMIF_CREATE, mp);

  mp->mode = mode;
  mp->id = clib_host_to_net_u32 (id);
  mp->role = role;
  mp->ring_size = clib_host_to_net_u32 (ring_size);
  mp->buffer_size = clib_host_to_net_u16 (buffer_size & 0xffff);
  if (socket_filename != 0)
    {
      strncpy ((char *) mp->socket_filename, (char *) socket_filename, 127);
      vec_free (socket_filename);
    }
  if (secret != 0)
    {
      strncpy ((char *) mp->secret, (char *) secret, 16);
      vec_free (secret);
    }
  memcpy (mp->hw_addr, hw_addr, 6);
  mp->rx_queues = rx_queues;
  mp->tx_queues = tx_queues;

  S (mp);
  W (ret);
  return ret;
}

/* memif-create reply handler */
static void vl_api_memif_create_reply_t_handler
  (vl_api_memif_create_reply_t * mp)
{
  vat_main_t *vam = memif_test_main.vat_main;
  i32 retval = ntohl (mp->retval);

  if (retval == 0)
    {
      fformat (vam->ofp, "created memif with sw_if_index %d\n",
	       ntohl (mp->sw_if_index));
    }

  vam->retval = retval;
  vam->result_ready = 1;
  vam->regenerate_interface_table = 1;
}

/* memif-delete API */
static int
api_memif_delete (vat_main_t * vam)
{
  unformat_input_t *i = vam->input;
  vl_api_memif_delete_t *mp;
  u32 sw_if_index = 0;
  u8 index_defined = 0;
  int ret;

  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (i, "sw_if_index %u", &sw_if_index))
	index_defined = 1;
      else
	{
	  clib_warning ("unknown input '%U'", format_unformat_error, i);
	  return -99;
	}
    }

  if (!index_defined)
    {
      errmsg ("missing sw_if_index\n");
      return -99;
    }

  M (MEMIF_DELETE, mp);

  mp->sw_if_index = clib_host_to_net_u32 (sw_if_index);

  S (mp);
  W (ret);
  return ret;
}

/* memif-dump API */
static int
api_memif_dump (vat_main_t * vam)
{
  memif_test_main_t *mm = &memif_test_main;
  vl_api_memif_dump_t *mp;
  vl_api_control_ping_t *mp_ping;
  int ret;

  if (vam->json_output)
    {
      clib_warning ("JSON output not supported for memif_dump");
      return -99;
    }

  M (MEMIF_DUMP, mp);
  S (mp);

  /* Use a control ping for synchronization */
  mp_ping = vl_msg_api_alloc_as_if_client (sizeof (*mp_ping));
  mp_ping->_vl_msg_id = htons (mm->ping_id);
  mp_ping->client_index = vam->my_client_index;

  fformat (vam->ofp, "Sending ping id=%d\n", mm->ping_id);

  vam->result_ready = 0;
  S (mp_ping);

  W (ret);
  return ret;
}

/* memif-details message handler */
static void vl_api_memif_details_t_handler (vl_api_memif_details_t * mp)
{
  vat_main_t *vam = memif_test_main.vat_main;

  fformat (vam->ofp, "%s: sw_if_index %u mac %U\n"
	   "   id %u socket %s role %s\n"
	   "   ring_size %u buffer_size %u\n"
	   "   state %s link %s\n",
	   mp->if_name, ntohl (mp->sw_if_index), format_ethernet_address,
	   mp->hw_addr, clib_net_to_host_u32 (mp->id), mp->socket_filename,
	   mp->role ? "slave" : "master",
	   ntohl (mp->ring_size), ntohs (mp->buffer_size),
	   mp->admin_up_down ? "up" : "down",
	   mp->link_up_down ? "up" : "down");
}

/*
 * List of messages that the api test plugin sends,
 * and that the data plane plugin processes
 */
#define foreach_vpe_api_msg					  \
_(memif_create, "[id <id>] [socket <path>] [ring_size <size>] " \
		"[buffer_size <size>] [hw_addr <mac_address>] "   \
		"[secret <string>] [mode ip] <master|slave>")	  \
_(memif_delete, "<sw_if_index>")                                  \
_(memif_dump, "")

static void
memif_vat_api_hookup (vat_main_t * vam)
{
  memif_test_main_t *mm __attribute__ ((unused)) = &memif_test_main;
  /* Hook up handlers for replies from the data plane plug-in */
#define _(N,n)                                                  \
  vl_msg_api_set_handlers((VL_API_##N + mm->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)
{
  memif_test_main_t *mm = &memif_test_main;
  u8 *name;

  mm->vat_main = vam;

  /* Ask the vpp engine for the first assigned message-id */
  name = format (0, "memif_%08x%c", api_version, 0);
  mm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);

  /* Get the control ping ID */
#define _(id,n,crc) \
  const char *id ## _CRC __attribute__ ((unused)) = #n "_" #crc;
  foreach_vl_msg_name_crc_vpe;
#undef _
  mm->ping_id = vl_msg_api_get_msg_index ((u8 *) (VL_API_CONTROL_PING_CRC));

  if (mm->msg_id_base != (u16) ~0)
    memif_vat_api_hookup (vam);

  vec_free (name);

  return 0;
}
t;res, h->next_protocol, clib_net_to_host_u32 (h->iid), clib_net_to_host_u32 (h->iid)); return s; } /* *INDENT-OFF* */ VNET_HW_INTERFACE_CLASS (lisp_gpe_hw_class) = { .name = "LISP_GPE", .format_header = format_lisp_gpe_header_with_length, .build_rewrite = lisp_gpe_build_rewrite, .update_adjacency = lisp_gpe_update_adjacency, }; /* *INDENT-ON* */ typedef struct { u32 dpo_index; } l2_lisp_gpe_tx_trace_t; static u8 * format_l2_lisp_gpe_tx_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); l2_lisp_gpe_tx_trace_t *t = va_arg (*args, l2_lisp_gpe_tx_trace_t *); s = format (s, "L2-LISP-GPE-TX: load-balance %d", t->dpo_index); return s; } /** * @brief LISP-GPE interface TX (encap) function for L2 overlays. * @node l2_lisp_gpe_interface_tx * * The L2 LISP-GPE interface TX (encap) function. * * Uses bridge domain index, source and destination ethernet addresses to * lookup tunnel. If the tunnel is multihomed a flow has is used to determine * the sub-tunnel and therefore the rewrite string to be used to encapsulate * the packets. * * @param[in] vm vlib_main_t corresponding to the current thread. * @param[in] node vlib_node_runtime_t data for this node. * @param[in] frame vlib_frame_t whose contents should be dispatched. * * @return number of vectors in frame. */ static uword l2_lisp_gpe_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 n_left_from, next_index, *from, *to_next; lisp_gpe_main_t *lgm = &lisp_gpe_main; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { vlib_buffer_t *b0; u32 bi0, lbi0; ethernet_header_t *e0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); e0 = vlib_buffer_get_current (b0); vnet_buffer (b0)->lisp.overlay_afi = LISP_AFI_MAC; /* lookup dst + src mac */ lbi0 = lisp_l2_fib_lookup (lgm, vnet_buffer (b0)->l2.bd_index, e0->src_address, e0->dst_address); vnet_buffer (b0)->ip.adj_index[VLIB_TX] = lbi0; if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { l2_lisp_gpe_tx_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->dpo_index = lbi0; } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, l2_arc_to_lb); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return from_frame->n_vectors; } static u8 * format_l2_lisp_gpe_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); return format (s, "l2_lisp_gpe%d", dev_instance); } /* *INDENT-OFF* */ VNET_DEVICE_CLASS (l2_lisp_gpe_device_class,static) = { .name = "L2_LISP_GPE", .format_device_name = format_l2_lisp_gpe_name, .format_tx_trace = format_l2_lisp_gpe_tx_trace, .tx_function = l2_lisp_gpe_interface_tx, }; /* *INDENT-ON* */ typedef struct { u32 dpo_index; } nsh_lisp_gpe_tx_trace_t; u8 * format_nsh_lisp_gpe_tx_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); nsh_lisp_gpe_tx_trace_t *t = va_arg (*args, nsh_lisp_gpe_tx_trace_t *); s = format (s, "NSH-GPE-TX: tunnel %d", t->dpo_index); return s; } /** * @brief LISP-GPE interface TX for NSH overlays. * @node nsh_lisp_gpe_interface_tx * * The NSH LISP-GPE interface TX function. * * @param[in] vm vlib_main_t corresponding to the current thread. * @param[in] node vlib_node_runtime_t data for this node. * @param[in] frame vlib_frame_t whose contents should be dispatched. * * @return number of vectors in frame. */ static uword nsh_lisp_gpe_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 n_left_from, next_index, *from, *to_next; lisp_gpe_main_t *lgm = &lisp_gpe_main; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; next_index = node->cached_next_index; while (n_left_from > 0) { u32 n_left_to_next; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from > 0 && n_left_to_next > 0) { vlib_buffer_t *b0; u32 bi0; u32 *nsh0, next0; const dpo_id_t *dpo0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; b0 = vlib_get_buffer (vm, bi0); nsh0 = vlib_buffer_get_current (b0); vnet_buffer (b0)->lisp.overlay_afi = LISP_AFI_LCAF; /* lookup SPI + SI (second word of the NSH header). * NB: Load balancing was done by the control plane */ dpo0 = lisp_nsh_fib_lookup (lgm, nsh0[1]); next0 = dpo0->dpoi_next_node; vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { nsh_lisp_gpe_tx_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->dpo_index = dpo0->dpoi_index; } vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return from_frame->n_vectors; } static u8 * format_nsh_lisp_gpe_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); return format (s, "nsh_lisp_gpe%d", dev_instance); } /* *INDENT-OFF* */ VNET_DEVICE_CLASS (nsh_lisp_gpe_device_class,static) = { .name = "NSH_LISP_GPE", .format_device_name = format_nsh_lisp_gpe_name, .format_tx_trace = format_nsh_lisp_gpe_tx_trace, .tx_function = nsh_lisp_gpe_interface_tx, }; /* *INDENT-ON* */ static vnet_hw_interface_t * lisp_gpe_create_iface (lisp_gpe_main_t * lgm, u32 vni, u32 dp_table, vnet_device_class_t * dev_class, tunnel_lookup_t * tuns) { u32 flen; u32 hw_if_index = ~0; u8 *new_name; vnet_hw_interface_t *hi; vnet_main_t *vnm = lgm->vnet_main; /* create hw lisp_gpeX iface if needed, otherwise reuse existing */ flen = vec_len (lgm->free_tunnel_hw_if_indices); if (flen > 0) { hw_if_index = lgm->free_tunnel_hw_if_indices[flen - 1]; _vec_len (lgm->free_tunnel_hw_if_indices) -= 1; hi = vnet_get_hw_interface (vnm, hw_if_index); /* rename interface */ new_name = format (0, "%U", dev_class->format_device_name, vni); vec_add1 (new_name, 0); vnet_rename_interface (vnm, hw_if_index, (char *) new_name); vec_free (new_name); /* clear old stats of freed interface before reuse */ vnet_interface_main_t *im = &vnm->interface_main; vnet_interface_counter_lock (im); vlib_zero_combined_counter (&im->combined_sw_if_counters [VNET_INTERFACE_COUNTER_TX], hi->sw_if_index); vlib_zero_combined_counter (&im->combined_sw_if_counters [VNET_INTERFACE_COUNTER_RX], hi->sw_if_index); vlib_zero_simple_counter (&im->sw_if_counters [VNET_INTERFACE_COUNTER_DROP], hi->sw_if_index); vnet_interface_counter_unlock (im); } else { hw_if_index = vnet_register_interface (vnm, dev_class->index, vni, lisp_gpe_hw_class.index, 0); hi = vnet_get_hw_interface (vnm, hw_if_index); } hash_set (tuns->hw_if_index_by_dp_table, dp_table, hw_if_index); /* set tunnel termination: post decap, packets are tagged as having been * originated by lisp-gpe interface */ hash_set (tuns->sw_if_index_by_vni, vni, hi->sw_if_index); hash_set (tuns->vni_by_sw_if_index, hi->sw_if_index, vni); return hi; } static void lisp_gpe_remove_iface (lisp_gpe_main_t * lgm, u32 hi_index, u32 dp_table, tunnel_lookup_t * tuns) { vnet_main_t *vnm = lgm->vnet_main; vnet_hw_interface_t *hi; uword *vnip; hi = vnet_get_hw_interface (vnm, hi_index); /* disable interface */ vnet_sw_interface_set_flags (vnm, hi->sw_if_index, 0 /* down */ ); vnet_hw_interface_set_flags (vnm, hi->hw_if_index, 0 /* down */ ); hash_unset (tuns->hw_if_index_by_dp_table, dp_table); vec_add1 (lgm->free_tunnel_hw_if_indices, hi->hw_if_index); /* clean tunnel termination and vni to sw_if_index binding */ vnip = hash_get (tuns->vni_by_sw_if_index, hi->sw_if_index); if (0 == vnip) { clib_warning ("No vni associated to interface %d", hi->sw_if_index); return; } hash_unset (tuns->sw_if_index_by_vni, vnip[0]); hash_unset (tuns->vni_by_sw_if_index, hi->sw_if_index); } static void lisp_gpe_iface_set_table (u32 sw_if_index, u32 table_id) { fib_node_index_t fib_index; fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, table_id); vec_validate (ip4_main.fib_index_by_sw_if_index, sw_if_index); ip4_main.fib_index_by_sw_if_index[sw_if_index] = fib_index; ip4_sw_interface_enable_disable (sw_if_index, 1); fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, table_id); vec_validate (ip6_main.fib_index_by_sw_if_index, sw_if_index); ip6_main.fib_index_by_sw_if_index[sw_if_index] = fib_index; ip6_sw_interface_enable_disable (sw_if_index, 1); } static void lisp_gpe_tenant_del_default_routes (u32 table_id) { fib_protocol_t proto; FOR_EACH_FIB_IP_PROTOCOL (proto) { fib_prefix_t prefix = { .fp_proto = proto, }; u32 fib_index; fib_index = fib_table_find (prefix.fp_proto, table_id); fib_table_entry_special_remove (fib_index, &prefix, FIB_SOURCE_LISP); fib_table_unlock (fib_index, prefix.fp_proto); } } static void lisp_gpe_tenant_add_default_routes (u32 table_id) { fib_protocol_t proto; FOR_EACH_FIB_IP_PROTOCOL (proto) { fib_prefix_t prefix = { .fp_proto = proto, }; u32 fib_index; /* * Add a deafult route that results in a control plane punt DPO */ fib_index = fib_table_find_or_create_and_lock (prefix.fp_proto, table_id); fib_table_entry_special_dpo_add (fib_index, &prefix, FIB_SOURCE_LISP, FIB_ENTRY_FLAG_EXCLUSIVE, lisp_cp_dpo_get (fib_proto_to_dpo (proto))); } } /** * @brief Add/del LISP-GPE L3 interface. * * Creates LISP-GPE interface, sets ingress arcs from lisp_gpeX_lookup, * installs default routes that attract all traffic with no more specific * routes to lgpe-ipx-lookup, set egress arcs to ipx-lookup, sets * the interface in the right vrf and enables it. * * @param[in] lgm Reference to @ref lisp_gpe_main_t. * @param[in] a Parameters to create interface. * * @return number of vectors in frame. */ u32 lisp_gpe_add_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 table_id) { vnet_main_t *vnm = lgm->vnet_main; tunnel_lookup_t *l3_ifaces = &lgm->l3_ifaces; vnet_hw_interface_t *hi; uword *hip, *si; hip = hash_get (l3_ifaces->hw_if_index_by_dp_table, table_id); if (hip) { clib_warning ("vrf %d already mapped to a vni", table_id); return ~0; } si = hash_get (l3_ifaces->sw_if_index_by_vni, vni); if (si) { clib_warning ("Interface for vni %d already exists", vni); } /* create lisp iface and populate tunnel tables */ hi = lisp_gpe_create_iface (lgm, vni, table_id, &lisp_gpe_device_class, l3_ifaces); /* insert default routes that point to lisp-cp lookup */ lisp_gpe_iface_set_table (hi->sw_if_index, table_id); lisp_gpe_tenant_add_default_routes (table_id); /* enable interface */ vnet_sw_interface_set_flags (vnm, hi->sw_if_index, VNET_SW_INTERFACE_FLAG_ADMIN_UP); vnet_hw_interface_set_flags (vnm, hi->hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); return (hi->sw_if_index); } void lisp_gpe_del_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 table_id) { vnet_main_t *vnm = lgm->vnet_main; tunnel_lookup_t *l3_ifaces = &lgm->l3_ifaces; vnet_hw_interface_t *hi; uword *hip; hip = hash_get (l3_ifaces->hw_if_index_by_dp_table, table_id); if (hip == 0) { clib_warning ("The interface for vrf %d doesn't exist", table_id); return; } hi = vnet_get_hw_interface (vnm, hip[0]); lisp_gpe_remove_iface (lgm, hip[0], table_id, &lgm->l3_ifaces); /* unset default routes */ ip4_sw_interface_enable_disable (hi->sw_if_index, 0); ip6_sw_interface_enable_disable (hi->sw_if_index, 0); lisp_gpe_tenant_del_default_routes (table_id); } /** * @brief Add/del LISP-GPE L2 interface. * * Creates LISP-GPE interface, sets it in L2 mode in the appropriate * bridge domain, sets egress arcs and enables it. * * @param[in] lgm Reference to @ref lisp_gpe_main_t. * @param[in] a Parameters to create interface. * * @return number of vectors in frame. */ u32 lisp_gpe_add_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id) { vnet_main_t *vnm = lgm->vnet_main; tunnel_lookup_t *l2_ifaces = &lgm->l2_ifaces; vnet_hw_interface_t *hi; uword *hip, *si; u16 bd_index; bd_index = bd_find_or_add_bd_index (&bd_main, bd_id); hip = hash_get (l2_ifaces->hw_if_index_by_dp_table, bd_index); if (hip) { clib_warning ("bridge domain %d already mapped to a vni", bd_id); return ~0; } si = hash_get (l2_ifaces->sw_if_index_by_vni, vni); if (si) { clib_warning ("Interface for vni %d already exists", vni); return ~0; } /* create lisp iface and populate tunnel tables */ hi = lisp_gpe_create_iface (lgm, vni, bd_index, &l2_lisp_gpe_device_class, &lgm->l2_ifaces); /* enable interface */ vnet_sw_interface_set_flags (vnm, hi->sw_if_index, VNET_SW_INTERFACE_FLAG_ADMIN_UP); vnet_hw_interface_set_flags (vnm, hi->hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); l2_arc_to_lb = vlib_node_add_named_next (vlib_get_main (), hi->tx_node_index, "l2-load-balance"); /* we're ready. add iface to l2 bridge domain */ set_int_l2_mode (lgm->vlib_main, vnm, MODE_L2_BRIDGE, hi->sw_if_index, bd_index, 0, 0, 0); return (hi->sw_if_index); } /** * @brief Add/del LISP-GPE L2 interface. * * Creates LISP-GPE interface, sets it in L2 mode in the appropriate * bridge domain, sets egress arcs and enables it. * * @param[in] lgm Reference to @ref lisp_gpe_main_t. * @param[in] a Parameters to create interface. * * @return number of vectors in frame. */ void lisp_gpe_del_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id) { tunnel_lookup_t *l2_ifaces = &lgm->l2_ifaces; u16 bd_index; uword *hip; bd_index = bd_find_or_add_bd_index (&bd_main, bd_id); hip = hash_get (l2_ifaces->hw_if_index_by_dp_table, bd_index); if (hip == 0) { clib_warning ("The interface for bridge domain %d doesn't exist", bd_id); return; } lisp_gpe_remove_iface (lgm, hip[0], bd_index, &lgm->l2_ifaces); } /** * @brief Add LISP-GPE NSH interface. * * Creates LISP-GPE interface, sets it in L3 mode. * * @param[in] lgm Reference to @ref lisp_gpe_main_t. * @param[in] a Parameters to create interface. * * @return sw_if_index. */ u32 lisp_gpe_add_nsh_iface (lisp_gpe_main_t * lgm) { vnet_main_t *vnm = lgm->vnet_main; tunnel_lookup_t *nsh_ifaces = &lgm->nsh_ifaces; vnet_hw_interface_t *hi; uword *hip, *si; hip = hash_get (nsh_ifaces->hw_if_index_by_dp_table, 0); if (hip) { clib_warning ("NSH interface 0 already exists"); return ~0; } si = hash_get (nsh_ifaces->sw_if_index_by_vni, 0); if (si) { clib_warning ("NSH interface already exists"); return ~0; } /* create lisp iface and populate tunnel tables */ hi = lisp_gpe_create_iface (lgm, 0, 0, &nsh_lisp_gpe_device_class, &lgm->nsh_ifaces); /* enable interface */ vnet_sw_interface_set_flags (vnm, hi->sw_if_index, VNET_SW_INTERFACE_FLAG_ADMIN_UP); vnet_hw_interface_set_flags (vnm, hi->hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); return (hi->sw_if_index); } /** * @brief Del LISP-GPE NSH interface. * */ void lisp_gpe_del_nsh_iface (lisp_gpe_main_t * lgm) { tunnel_lookup_t *nsh_ifaces = &lgm->nsh_ifaces; uword *hip; hip = hash_get (nsh_ifaces->hw_if_index_by_dp_table, 0); if (hip == 0) { clib_warning ("The NSH 0 interface doesn't exist"); return; } lisp_gpe_remove_iface (lgm, hip[0], 0, &lgm->nsh_ifaces); } static clib_error_t * lisp_gpe_add_del_iface_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1; u32 table_id, vni, bd_id; u8 vni_is_set = 0, vrf_is_set = 0, bd_index_is_set = 0; u8 nsh_iface = 0; clib_error_t *error = NULL; if (vnet_lisp_gpe_enable_disable_status () == 0) { return clib_error_return (0, "LISP is disabled"); } /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "add")) is_add = 1; else if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "vrf %d", &table_id)) { vrf_is_set = 1; } else if (unformat (line_input, "vni %d", &vni)) { vni_is_set = 1; } else if (unformat (line_input, "bd %d", &bd_id)) { bd_index_is_set = 1; } else if (unformat (line_input, "nsh")) { nsh_iface = 1; } else { error = clib_error_return (0, "parse error: '%U'", format_unformat_error, line_input); goto done; } } if (nsh_iface) { if (is_add) { if (~0 == lisp_gpe_add_nsh_iface (&lisp_gpe_main)) { error = clib_error_return (0, "NSH interface not created"); goto done; } } else { lisp_gpe_del_nsh_iface (&lisp_gpe_main); } goto done; } if (vrf_is_set && bd_index_is_set) { error = clib_error_return (0, "Cannot set both vrf and brdige domain index!"); goto done; } if (!vni_is_set) { error = clib_error_return (0, "vni must be set!"); goto done; } if (!vrf_is_set && !bd_index_is_set) { error = clib_error_return (0, "vrf or bridge domain index must be set!"); goto done; } if (bd_index_is_set) { if (is_add) { if (~0 == lisp_gpe_tenant_l2_iface_add_or_lock (vni, bd_id)) { error = clib_error_return (0, "L2 interface not created"); goto done; } } else lisp_gpe_tenant_l2_iface_unlock (vni); } else { if (is_add) { if (~0 == lisp_gpe_tenant_l3_iface_add_or_lock (vni, table_id)) { error = clib_error_return (0, "L3 interface not created"); goto done; } } else lisp_gpe_tenant_l3_iface_unlock (vni); } done: unformat_free (line_input); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (add_del_lisp_gpe_iface_command, static) = { .path = "gpe iface", .short_help = "gpe iface add/del vni <vni> vrf <vrf>", .function = lisp_gpe_add_del_iface_command_fn, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */