+++ /dev/null
-/*
- * gre_interface.c: gre interfaces
- *
- * Copyright (c) 2012 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 <vnet/vnet.h>
-#include <vnet/gre/gre.h>
-#include <vnet/ip/format.h>
-#include <vnet/fib/fib_table.h>
-#include <vnet/adj/adj_midchain.h>
-#include <vnet/adj/adj_nbr.h>
-#include <vnet/mpls/mpls.h>
-#include <vnet/l2/l2_input.h>
-#include <vnet/teib/teib.h>
-
-u8 *
-format_gre_tunnel_type (u8 * s, va_list * args)
-{
- gre_tunnel_type_t type = va_arg (*args, int);
-
- switch (type)
- {
-#define _(n, v) case GRE_TUNNEL_TYPE_##n: \
- s = format (s, "%s", v); \
- break;
- foreach_gre_tunnel_type
-#undef _
- }
-
- return (s);
-}
-
-static u8 *
-format_gre_tunnel (u8 * s, va_list * args)
-{
- gre_tunnel_t *t = va_arg (*args, gre_tunnel_t *);
-
- s = format (s, "[%d] instance %d src %U dst %U fib-idx %d sw-if-idx %d ",
- t->dev_instance, t->user_instance,
- format_ip46_address, &t->tunnel_src, IP46_TYPE_ANY,
- format_ip46_address, &t->tunnel_dst.fp_addr, IP46_TYPE_ANY,
- t->outer_fib_index, t->sw_if_index);
-
- s = format (s, "payload %U ", format_gre_tunnel_type, t->type);
- s = format (s, "%U ", format_tunnel_mode, t->mode);
-
- if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
- s = format (s, "session %d ", t->session_id);
-
- if (t->type != GRE_TUNNEL_TYPE_L3)
- s = format (s, "l2-adj-idx %d ", t->l2_adj_index);
-
- return s;
-}
-
-static gre_tunnel_t *
-gre_tunnel_db_find (const vnet_gre_tunnel_add_del_args_t * a,
- u32 outer_fib_index, gre_tunnel_key_t * key)
-{
- gre_main_t *gm = &gre_main;
- uword *p;
-
- if (!a->is_ipv6)
- {
- gre_mk_key4 (a->src.ip4, a->dst.ip4, outer_fib_index,
- a->type, a->mode, a->session_id, &key->gtk_v4);
- p = hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4);
- }
- else
- {
- gre_mk_key6 (&a->src.ip6, &a->dst.ip6, outer_fib_index,
- a->type, a->mode, a->session_id, &key->gtk_v6);
- p = hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6);
- }
-
- if (NULL == p)
- return (NULL);
-
- return (pool_elt_at_index (gm->tunnels, p[0]));
-}
-
-static void
-gre_tunnel_db_add (gre_tunnel_t * t, gre_tunnel_key_t * key)
-{
- gre_main_t *gm = &gre_main;
-
- if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
- {
- hash_set_mem_alloc (&gm->tunnel_by_key6, &key->gtk_v6, t->dev_instance);
- }
- else
- {
- hash_set_mem_alloc (&gm->tunnel_by_key4, &key->gtk_v4, t->dev_instance);
- }
-}
-
-static void
-gre_tunnel_db_remove (gre_tunnel_t * t, gre_tunnel_key_t * key)
-{
- gre_main_t *gm = &gre_main;
-
- if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
- {
- hash_unset_mem_free (&gm->tunnel_by_key6, &key->gtk_v6);
- }
- else
- {
- hash_unset_mem_free (&gm->tunnel_by_key4, &key->gtk_v4);
- }
-}
-
-/**
- * gre_tunnel_stack
- *
- * 'stack' (resolve the recursion for) the tunnel's midchain adjacency
- */
-void
-gre_tunnel_stack (adj_index_t ai)
-{
- gre_main_t *gm = &gre_main;
- ip_adjacency_t *adj;
- gre_tunnel_t *gt;
- u32 sw_if_index;
-
- adj = adj_get (ai);
- sw_if_index = adj->rewrite_header.sw_if_index;
-
- if ((vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index) ||
- (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index]))
- return;
-
- gt = pool_elt_at_index (gm->tunnels,
- gm->tunnel_index_by_sw_if_index[sw_if_index]);
-
- if ((vnet_hw_interface_get_flags (vnet_get_main (), gt->hw_if_index) &
- VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
- {
- adj_midchain_delegate_unstack (ai);
- }
- else
- {
- adj_midchain_delegate_stack (ai, gt->outer_fib_index, >->tunnel_dst);
- }
-}
-
-/**
- * mgre_tunnel_stack
- *
- * 'stack' (resolve the recursion for) the tunnel's midchain adjacency
- */
-static void
-mgre_tunnel_stack (adj_index_t ai)
-{
- gre_main_t *gm = &gre_main;
- const ip_adjacency_t *adj;
- const gre_tunnel_t *gt;
- u32 sw_if_index;
-
- adj = adj_get (ai);
- sw_if_index = adj->rewrite_header.sw_if_index;
-
- if ((vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index) ||
- (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index]))
- return;
-
- gt = pool_elt_at_index (gm->tunnels,
- gm->tunnel_index_by_sw_if_index[sw_if_index]);
-
- if ((vnet_hw_interface_get_flags (vnet_get_main (), gt->hw_if_index) &
- VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
- {
- adj_midchain_delegate_unstack (ai);
- }
- else
- {
- const teib_entry_t *ne;
-
- ne = teib_entry_find_46 (sw_if_index, adj->ia_nh_proto,
- &adj->sub_type.nbr.next_hop);
- if (NULL != ne)
- teib_entry_adj_stack (ne, ai);
- }
-}
-
-/**
- * @brief Call back when restacking all adjacencies on a GRE interface
- */
-static adj_walk_rc_t
-gre_adj_walk_cb (adj_index_t ai, void *ctx)
-{
- gre_tunnel_stack (ai);
-
- return (ADJ_WALK_RC_CONTINUE);
-}
-static adj_walk_rc_t
-mgre_adj_walk_cb (adj_index_t ai, void *ctx)
-{
- mgre_tunnel_stack (ai);
-
- return (ADJ_WALK_RC_CONTINUE);
-}
-
-static void
-gre_tunnel_restack (gre_tunnel_t * gt)
-{
- fib_protocol_t proto;
-
- /*
- * walk all the adjacencies on th GRE interface and restack them
- */
- FOR_EACH_FIB_IP_PROTOCOL (proto)
- {
- switch (gt->mode)
- {
- case TUNNEL_MODE_P2P:
- adj_nbr_walk (gt->sw_if_index, proto, gre_adj_walk_cb, NULL);
- break;
- case TUNNEL_MODE_MP:
- adj_nbr_walk (gt->sw_if_index, proto, mgre_adj_walk_cb, NULL);
- break;
- }
- }
-}
-
-static void
-gre_teib_mk_key (const gre_tunnel_t * t,
- const teib_entry_t * ne, gre_tunnel_key_t * key)
-{
- const fib_prefix_t *nh;
-
- nh = teib_entry_get_nh (ne);
-
- /* construct the key using mode P2P so it can be found in the DP */
- if (FIB_PROTOCOL_IP4 == nh->fp_proto)
- gre_mk_key4 (t->tunnel_src.ip4,
- nh->fp_addr.ip4,
- teib_entry_get_fib_index (ne),
- t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v4);
- else
- gre_mk_key6 (&t->tunnel_src.ip6,
- &nh->fp_addr.ip6,
- teib_entry_get_fib_index (ne),
- t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v6);
-}
-
-/**
- * An TEIB entry has been added
- */
-static void
-gre_teib_entry_added (const teib_entry_t * ne)
-{
- gre_main_t *gm = &gre_main;
- const ip_address_t *nh;
- gre_tunnel_key_t key;
- gre_tunnel_t *t;
- u32 sw_if_index;
- u32 t_idx;
-
- sw_if_index = teib_entry_get_sw_if_index (ne);
- if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
- return;
-
- t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
-
- if (INDEX_INVALID == t_idx)
- return;
-
- /* entry has been added on an interface for which there is a GRE tunnel */
- t = pool_elt_at_index (gm->tunnels, t_idx);
-
- if (t->mode != TUNNEL_MODE_MP)
- return;
-
- /* the next-hop (underlay) of the NHRP entry will form part of the key for
- * ingress lookup to match packets to this interface */
- gre_teib_mk_key (t, ne, &key);
- gre_tunnel_db_add (t, &key);
-
- /* update the rewrites for each of the adjacencies for this peer (overlay)
- * using the next-hop (underlay) */
- mgre_walk_ctx_t ctx = {
- .t = t,
- .ne = ne
- };
- nh = teib_entry_get_peer (ne);
- adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
- (AF_IP4 == ip_addr_version (nh) ?
- FIB_PROTOCOL_IP4 :
- FIB_PROTOCOL_IP6),
- &ip_addr_46 (nh), mgre_mk_complete_walk, &ctx);
-}
-
-static void
-gre_teib_entry_deleted (const teib_entry_t * ne)
-{
- gre_main_t *gm = &gre_main;
- const ip_address_t *nh;
- gre_tunnel_key_t key;
- gre_tunnel_t *t;
- u32 sw_if_index;
- u32 t_idx;
-
- sw_if_index = teib_entry_get_sw_if_index (ne);
- if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
- return;
-
- t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
-
- if (INDEX_INVALID == t_idx)
- return;
-
- t = pool_elt_at_index (gm->tunnels, t_idx);
-
- /* remove the next-hop as an ingress lookup key */
- gre_teib_mk_key (t, ne, &key);
- gre_tunnel_db_remove (t, &key);
-
- nh = teib_entry_get_peer (ne);
-
- /* make all the adjacencies incomplete */
- adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
- (AF_IP4 == ip_addr_version (nh) ?
- FIB_PROTOCOL_IP4 :
- FIB_PROTOCOL_IP6),
- &ip_addr_46 (nh), mgre_mk_incomplete_walk, t);
-}
-
-static walk_rc_t
-gre_tunnel_delete_teib_walk (index_t nei, void *ctx)
-{
- gre_tunnel_t *t = ctx;
- gre_tunnel_key_t key;
-
- gre_teib_mk_key (t, teib_entry_get (nei), &key);
- gre_tunnel_db_remove (t, &key);
-
- return (WALK_CONTINUE);
-}
-
-static walk_rc_t
-gre_tunnel_add_teib_walk (index_t nei, void *ctx)
-{
- gre_tunnel_t *t = ctx;
- gre_tunnel_key_t key = {};
-
- gre_teib_mk_key (t, teib_entry_get (nei), &key);
- gre_tunnel_db_add (t, &key);
-
- return (WALK_CONTINUE);
-}
-
-static int
-vnet_gre_tunnel_add (vnet_gre_tunnel_add_del_args_t * a,
- u32 outer_fib_index, u32 * sw_if_indexp)
-{
- gre_main_t *gm = &gre_main;
- vnet_main_t *vnm = gm->vnet_main;
- gre_tunnel_t *t;
- vnet_hw_interface_t *hi;
- u32 hw_if_index, sw_if_index;
- u8 is_ipv6 = a->is_ipv6;
- gre_tunnel_key_t key;
-
- t = gre_tunnel_db_find (a, outer_fib_index, &key);
- if (NULL != t)
- return VNET_API_ERROR_IF_ALREADY_EXISTS;
-
- pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES);
- clib_memset (t, 0, sizeof (*t));
-
- /* Reconcile the real dev_instance and a possible requested instance */
- u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */
- u32 u_idx = a->instance; /* user specified instance */
- if (u_idx == ~0)
- u_idx = t_idx;
- if (hash_get (gm->instance_used, u_idx))
- {
- pool_put (gm->tunnels, t);
- return VNET_API_ERROR_INSTANCE_IN_USE;
- }
- hash_set (gm->instance_used, u_idx, 1);
-
- t->dev_instance = t_idx; /* actual */
- t->user_instance = u_idx; /* name */
-
- t->type = a->type;
- t->mode = a->mode;
- t->flags = a->flags;
- if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
- t->session_id = a->session_id;
-
- if (t->type == GRE_TUNNEL_TYPE_L3)
- {
- if (t->mode == TUNNEL_MODE_P2P)
- hw_if_index =
- vnet_register_interface (vnm, gre_device_class.index, t_idx,
- gre_hw_interface_class.index, t_idx);
- else
- hw_if_index =
- vnet_register_interface (vnm, gre_device_class.index, t_idx,
- mgre_hw_interface_class.index, t_idx);
- }
- else
- {
- vnet_eth_interface_registration_t eir = {};
-
- /* Default MAC address (d00b:eed0:0000 + sw_if_index) */
- u8 address[6] =
- { 0xd0, 0x0b, 0xee, 0xd0, (u8) (t_idx >> 8), (u8) t_idx };
-
- eir.dev_class_index = gre_device_class.index;
- eir.dev_instance = t_idx;
- eir.address = address;
- hw_if_index = vnet_eth_register_interface (vnm, &eir);
- }
-
- /* Set GRE tunnel interface output node (not used for L3 payload) */
- if (GRE_TUNNEL_TYPE_ERSPAN == t->type)
- vnet_set_interface_output_node (vnm, hw_if_index,
- gre_erspan_encap_node.index);
- else
- vnet_set_interface_output_node (vnm, hw_if_index,
- gre_teb_encap_node.index);
-
- hi = vnet_get_hw_interface (vnm, hw_if_index);
- sw_if_index = hi->sw_if_index;
-
- t->hw_if_index = hw_if_index;
- t->outer_fib_index = outer_fib_index;
- t->sw_if_index = sw_if_index;
- t->l2_adj_index = ADJ_INDEX_INVALID;
-
- vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
- gm->tunnel_index_by_sw_if_index[sw_if_index] = t_idx;
-
- if (!is_ipv6)
- {
- hi->frame_overhead = sizeof (gre_header_t) + sizeof (ip4_header_t);
- hi->min_frame_size = hi->frame_overhead + 64;
- }
- else
- {
- hi->frame_overhead = sizeof (gre_header_t) + sizeof (ip6_header_t);
- hi->min_frame_size = hi->frame_overhead + 64;
- }
-
- /* Standard default gre MTU. */
- vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000);
-
- /*
- * source the FIB entry for the tunnel's destination
- * and become a child thereof. The tunnel will then get poked
- * when the forwarding for the entry updates, and the tunnel can
- * re-stack accordingly
- */
-
- clib_memcpy (&t->tunnel_src, &a->src, sizeof (t->tunnel_src));
- t->tunnel_dst.fp_len = !is_ipv6 ? 32 : 128;
- t->tunnel_dst.fp_proto = !is_ipv6 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
- t->tunnel_dst.fp_addr = a->dst;
-
- gre_tunnel_db_add (t, &key);
-
- if (t->mode == TUNNEL_MODE_MP)
- teib_walk_itf (t->sw_if_index, gre_tunnel_add_teib_walk, t);
-
- if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
- {
- gre_sn_key_t skey;
- gre_sn_t *gre_sn;
-
- gre_mk_sn_key (t, &skey);
- gre_sn = (gre_sn_t *) hash_get_mem (gm->seq_num_by_key, &skey);
- if (gre_sn != NULL)
- {
- gre_sn->ref_count++;
- t->gre_sn = gre_sn;
- }
- else
- {
- gre_sn = clib_mem_alloc (sizeof (gre_sn_t));
- gre_sn->seq_num = 0;
- gre_sn->ref_count = 1;
- t->gre_sn = gre_sn;
- hash_set_mem_alloc (&gm->seq_num_by_key, &skey, (uword) gre_sn);
- }
- }
-
- if (t->type != GRE_TUNNEL_TYPE_L3)
- {
- t->l2_adj_index = adj_nbr_add_or_lock
- (t->tunnel_dst.fp_proto, VNET_LINK_ETHERNET, &zero_addr, sw_if_index);
- vnet_set_interface_l3_output_node (gm->vlib_main, sw_if_index,
- (u8 *) "tunnel-output-no-count");
- gre_update_adj (vnm, t->sw_if_index, t->l2_adj_index);
- }
- else
- {
- vnet_set_interface_l3_output_node (gm->vlib_main, sw_if_index,
- (u8 *) "tunnel-output");
- }
- if (sw_if_indexp)
- *sw_if_indexp = sw_if_index;
-
- /* register gre46-input nodes */
- ip4_register_protocol (IP_PROTOCOL_GRE, gre4_input_node.index);
- ip6_register_protocol (IP_PROTOCOL_GRE, gre6_input_node.index);
-
- return 0;
-}
-
-static int
-vnet_gre_tunnel_delete (vnet_gre_tunnel_add_del_args_t * a,
- u32 outer_fib_index, u32 * sw_if_indexp)
-{
- gre_main_t *gm = &gre_main;
- vnet_main_t *vnm = gm->vnet_main;
- gre_tunnel_t *t;
- gre_tunnel_key_t key;
- u32 sw_if_index;
-
- t = gre_tunnel_db_find (a, outer_fib_index, &key);
- if (NULL == t)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
-
- if (t->mode == TUNNEL_MODE_MP)
- teib_walk_itf (t->sw_if_index, gre_tunnel_delete_teib_walk, t);
-
- sw_if_index = t->sw_if_index;
- vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
-
- /* make sure tunnel is removed from l2 bd or xconnect */
- set_int_l2_mode (gm->vlib_main, vnm, MODE_L3, sw_if_index, 0,
- L2_BD_PORT_TYPE_NORMAL, 0, 0);
- gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
-
- if (t->type == GRE_TUNNEL_TYPE_L3)
- vnet_delete_hw_interface (vnm, t->hw_if_index);
- else
- ethernet_delete_interface (vnm, t->hw_if_index);
-
- if (t->l2_adj_index != ADJ_INDEX_INVALID)
- {
- adj_midchain_delegate_unstack (t->l2_adj_index);
- adj_unlock (t->l2_adj_index);
- }
-
- ASSERT ((t->type != GRE_TUNNEL_TYPE_ERSPAN) || (t->gre_sn != NULL));
- if ((t->type == GRE_TUNNEL_TYPE_ERSPAN) && (t->gre_sn->ref_count-- == 1))
- {
- gre_sn_key_t skey;
- gre_mk_sn_key (t, &skey);
- hash_unset_mem_free (&gm->seq_num_by_key, &skey);
- clib_mem_free (t->gre_sn);
- }
-
- vnet_reset_interface_l3_output_node (gm->vlib_main, sw_if_index);
- hash_unset (gm->instance_used, t->user_instance);
- gre_tunnel_db_remove (t, &key);
- pool_put (gm->tunnels, t);
-
- if (sw_if_indexp)
- *sw_if_indexp = sw_if_index;
-
- return 0;
-}
-
-int
-vnet_gre_tunnel_add_del (vnet_gre_tunnel_add_del_args_t * a,
- u32 * sw_if_indexp)
-{
- u32 outer_fib_index;
-
- outer_fib_index = fib_table_find ((a->is_ipv6 ?
- FIB_PROTOCOL_IP6 :
- FIB_PROTOCOL_IP4), a->outer_table_id);
-
- if (~0 == outer_fib_index)
- return VNET_API_ERROR_NO_SUCH_FIB;
-
- if (a->session_id > GTK_SESSION_ID_MAX)
- return VNET_API_ERROR_INVALID_SESSION_ID;
-
- if (a->mode == TUNNEL_MODE_MP && !ip46_address_is_zero (&a->dst))
- return (VNET_API_ERROR_INVALID_DST_ADDRESS);
-
- if (a->is_add)
- return (vnet_gre_tunnel_add (a, outer_fib_index, sw_if_indexp));
- else
- return (vnet_gre_tunnel_delete (a, outer_fib_index, sw_if_indexp));
-}
-
-clib_error_t *
-gre_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
-{
- gre_main_t *gm = &gre_main;
- vnet_hw_interface_t *hi;
- gre_tunnel_t *t;
- u32 ti;
-
- hi = vnet_get_hw_interface (vnm, hw_if_index);
-
- if (NULL == gm->tunnel_index_by_sw_if_index ||
- hi->sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index))
- return (NULL);
-
- ti = gm->tunnel_index_by_sw_if_index[hi->sw_if_index];
-
- if (~0 == ti)
- /* not one of ours */
- return (NULL);
-
- t = pool_elt_at_index (gm->tunnels, ti);
-
- if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
- vnet_hw_interface_set_flags (vnm, hw_if_index,
- VNET_HW_INTERFACE_FLAG_LINK_UP);
- else
- vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ );
-
- gre_tunnel_restack (t);
-
- return /* no error */ 0;
-}
-
-static clib_error_t *
-create_gre_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- vnet_gre_tunnel_add_del_args_t _a, *a = &_a;
- ip46_address_t src = ip46_address_initializer, dst =
- ip46_address_initializer;
- u32 instance = ~0;
- u32 outer_table_id = 0;
- gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3;
- tunnel_mode_t t_mode = TUNNEL_MODE_P2P;
- tunnel_encap_decap_flags_t flags = TUNNEL_ENCAP_DECAP_FLAG_NONE;
- u32 session_id = 0;
- int rv;
- u8 is_add = 1;
- u32 sw_if_index;
- clib_error_t *error = NULL;
-
- /* 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, "del"))
- is_add = 0;
- else if (unformat (line_input, "instance %d", &instance))
- ;
- else if (unformat (line_input, "src %U", unformat_ip46_address, &src))
- ;
- else if (unformat (line_input, "dst %U", unformat_ip46_address, &dst))
- ;
- else if (unformat (line_input, "outer-table-id %d", &outer_table_id))
- ;
- else if (unformat (line_input, "multipoint"))
- t_mode = TUNNEL_MODE_MP;
- else if (unformat (line_input, "teb"))
- t_type = GRE_TUNNEL_TYPE_TEB;
- else if (unformat (line_input, "erspan %d", &session_id))
- t_type = GRE_TUNNEL_TYPE_ERSPAN;
- else
- if (unformat
- (line_input, "flags %U", unformat_tunnel_encap_decap_flags,
- &flags))
- ;
- else
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if (ip46_address_is_equal (&src, &dst))
- {
- error = clib_error_return (0, "src and dst are identical");
- goto done;
- }
-
- if (t_mode != TUNNEL_MODE_MP && ip46_address_is_zero (&dst))
- {
- error = clib_error_return (0, "destination address not specified");
- goto done;
- }
-
- if (ip46_address_is_zero (&src))
- {
- error = clib_error_return (0, "source address not specified");
- goto done;
- }
-
- if (ip46_address_is_ip4 (&src) != ip46_address_is_ip4 (&dst))
- {
- error =
- clib_error_return (0, "src and dst address must be the same AF");
- goto done;
- }
-
- clib_memset (a, 0, sizeof (*a));
- a->is_add = is_add;
- a->outer_table_id = outer_table_id;
- a->type = t_type;
- a->mode = t_mode;
- a->session_id = session_id;
- a->is_ipv6 = !ip46_address_is_ip4 (&src);
- a->instance = instance;
- a->flags = flags;
- clib_memcpy (&a->src, &src, sizeof (a->src));
- clib_memcpy (&a->dst, &dst, sizeof (a->dst));
-
- rv = vnet_gre_tunnel_add_del (a, &sw_if_index);
-
- switch (rv)
- {
- case 0:
- vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
- vnet_get_main (), sw_if_index);
- break;
- case VNET_API_ERROR_IF_ALREADY_EXISTS:
- error = clib_error_return (0, "GRE tunnel already exists...");
- goto done;
- case VNET_API_ERROR_NO_SUCH_FIB:
- error = clib_error_return (0, "outer table ID %d doesn't exist\n",
- outer_table_id);
- goto done;
- case VNET_API_ERROR_NO_SUCH_ENTRY:
- error = clib_error_return (0, "GRE tunnel doesn't exist");
- goto done;
- case VNET_API_ERROR_INVALID_SESSION_ID:
- error = clib_error_return (0, "session ID %d out of range\n",
- session_id);
- goto done;
- case VNET_API_ERROR_INSTANCE_IN_USE:
- error = clib_error_return (0, "Instance is in use");
- goto done;
- default:
- error =
- clib_error_return (0, "vnet_gre_tunnel_add_del returned %d", rv);
- goto done;
- }
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (create_gre_tunnel_command, static) = {
- .path = "create gre tunnel",
- .short_help = "create gre tunnel src <addr> dst <addr> [instance <n>] "
- "[outer-fib-id <fib>] [teb | erspan <session-id>] [del] "
- "[multipoint]",
- .function = create_gre_tunnel_command_fn,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-show_gre_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- gre_main_t *gm = &gre_main;
- gre_tunnel_t *t;
- u32 ti = ~0;
-
- if (pool_elts (gm->tunnels) == 0)
- vlib_cli_output (vm, "No GRE tunnels configured...");
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "%d", &ti))
- ;
- else
- break;
- }
-
- if (~0 == ti)
- {
- /* *INDENT-OFF* */
- pool_foreach (t, gm->tunnels)
- {
- vlib_cli_output (vm, "%U", format_gre_tunnel, t);
- }
- /* *INDENT-ON* */
- }
- else
- {
- t = pool_elt_at_index (gm->tunnels, ti);
-
- vlib_cli_output (vm, "%U", format_gre_tunnel, t);
- }
-
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_gre_tunnel_command, static) = {
- .path = "show gre tunnel",
- .function = show_gre_tunnel_command_fn,
-};
-/* *INDENT-ON* */
-
-const static teib_vft_t gre_teib_vft = {
- .nv_added = gre_teib_entry_added,
- .nv_deleted = gre_teib_entry_deleted,
-};
-
-/* force inclusion from application's main.c */
-clib_error_t *
-gre_interface_init (vlib_main_t * vm)
-{
- teib_register (&gre_teib_vft);
-
- return (NULL);
-}
-
-VLIB_INIT_FUNCTION (gre_interface_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff