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authorOle Troan <ot@cisco.com>2018-03-08 12:30:43 +0100
committerNeale Ranns <nranns@cisco.com>2018-03-14 14:06:02 +0000
commit298c69510ff4b64a262d465eb8877c4e7f4e60e0 (patch)
treee9ecf5fe32203ff40798841ac6442c9eaca943ca /src/plugins/sixrd/sixrd.c
parent1c5ddbb22ba37e022a4cbf7c23d3cf6490d8ac6e (diff)
IPIP: Add IP{v4,v6} over IP{v4,v6} configured tunnel support.
Change-Id: I166301c9e2388bae5f70ec0179d663a2703e27f5 Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/plugins/sixrd/sixrd.c')
-rw-r--r--src/plugins/sixrd/sixrd.c775
1 files changed, 0 insertions, 775 deletions
diff --git a/src/plugins/sixrd/sixrd.c b/src/plugins/sixrd/sixrd.c
deleted file mode 100644
index 66ad19b7811..00000000000
--- a/src/plugins/sixrd/sixrd.c
+++ /dev/null
@@ -1,775 +0,0 @@
-/*
- * Copyright (c) 2018 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.
- */
-/**
- * This code supports the following sixrd modes:
- *
- * 32 EA bits (Complete IPv4 address is embedded):
- * ea_bits_len = 32
- * IPv4 suffix is embedded:
- * ea_bits_len = < 32
- * No embedded address bits (1:1 mode):
- * ea_bits_len = 0
- */
-
-#include "sixrd.h"
-#include <vnet/plugin/plugin.h>
-#include <vlibapi/api.h>
-#include <vlibmemory/api.h>
-#include <vnet/adj/adj.h>
-#include <vnet/fib/fib_table.h>
-#include <vnet/fib/ip6_fib.h>
-#include <vnet/adj/adj_midchain.h>
-#include <vnet/adj/adj_delegate.h>
-#include <vnet/dpo/lookup_dpo.h>
-#include <vpp/app/version.h> // Really needed?
-
-/* define message IDs */
-#include "sixrd_msg_enum.h"
-
-/* define message structures */
-#define vl_typedefs
-#include "sixrd_all_api_h.h"
-#undef vl_typedefs
-
-/* define generated endian-swappers */
-#define vl_endianfun
-#include "sixrd_all_api_h.h"
-#undef vl_endianfun
-
-/* instantiate all the print functions we know about */
-#define vl_print(handle, ...) vlib_cli_output(handle, __VA_ARGS__)
-#define vl_printfun
-#include "sixrd_all_api_h.h"
-#undef vl_printfun
-
-/* Get the API version number */
-#define vl_api_version(n, v) static u32 api_version = (v);
-#include "sixrd_all_api_h.h"
-#undef vl_api_version
-
-#define REPLY_MSG_ID_BASE sm->msg_id_base
-#include <vlibapi/api_helper_macros.h>
-
-extern vlib_node_registration_t ip4_sixrd_node;
-
-/**
- * Adj delegate data
- */
-typedef struct sixrd_adj_delegate_t_
-{
- /**
- * linkage to the adj
- */
- u32 adj_index;
-
- /**
- * Linnkage to the FIB node graph
- */
- fib_node_t sixrd_node;
-
- /**
- * tracking of the IPv4 next-hop
- */
- fib_node_index_t sixrd_fib_entry_index;
-
- /**
- * sibling on the fib-entry
- */
- u32 sixrd_sibling;
-} sixrd_adj_delegate_t;
-
-/**
- * Pool of delegate structs
- */
-static sixrd_adj_delegate_t *sixrd_adj_delegate_pool;
-
-/**
- * Adj delegate registered type
- */
-static adj_delegate_type_t sixrd_adj_delegate_type;
-
-/**
- * FIB node registered type
- */
-static fib_node_type_t sixrd_fib_node_type;
-
-static inline sixrd_adj_delegate_t *
-sixrd_adj_from_base (adj_delegate_t * ad)
-{
- if (NULL == ad)
- {
- return (NULL);
- }
- return (pool_elt_at_index (sixrd_adj_delegate_pool, ad->ad_index));
-}
-
-static inline const sixrd_adj_delegate_t *
-sixrd_adj_from_const_base (const adj_delegate_t * ad)
-{
- if (NULL == ad)
- {
- return (NULL);
- }
- return (pool_elt_at_index (sixrd_adj_delegate_pool, ad->ad_index));
-}
-
-sixrd_main_t sixrd_main;
-
-static void
-sixrd_fixup (vlib_main_t * vm,
- ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
-{
- ip4_header_t *ip4 = vlib_buffer_get_current (b0);
- ip6_header_t *ip6 = vlib_buffer_get_current (b0) + sizeof (ip4_header_t);
- const sixrd_tunnel_t *t = data;
-
- ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
- ip4->dst_address.as_u32 =
- sixrd_get_addr_net (t, ip6->dst_address.as_u64[0]);
- ip4->checksum = ip4_header_checksum (ip4);
-}
-
-static void
-ip6ip_fixup (vlib_main_t * vm,
- ip_adjacency_t * adj, vlib_buffer_t * b0, const void *data)
-{
- const sixrd_tunnel_t *t = data;
- ip4_header_t *ip4 = vlib_buffer_get_current (b0);
- ip4->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
- ip4->dst_address.as_u32 =
- sixrd_get_addr_net (t, adj->sub_type.nbr.next_hop.as_u64[0]);
- ip4->checksum = ip4_header_checksum (ip4);
-}
-
-static sixrd_tunnel_t *
-find_tunnel_by_sw_if_index (u32 sw_if_index)
-{
- sixrd_main_t *sm = &sixrd_main;
- u32 ti = sm->tunnel_index_by_sw_if_index[sw_if_index];
- if (ti == ~0)
- {
- clib_warning ("Not our tunnel\n");
- return (0);
- }
- return pool_elt_at_index (sm->tunnels, ti);
-}
-
-static sixrd_tunnel_t *
-find_tunnel (ip6_address_t * ip6_prefix)
-{
- sixrd_main_t *sm = &sixrd_main;
- sixrd_tunnel_t *d;
-
- /* *INDENT-OFF* */
- pool_foreach (d, sm->tunnels,
- ({
- if (!memcmp (&d->ip6_prefix, ip6_prefix, 16))
- return d;
- }));
- /* *INDENT-ON* */
- return 0;
-}
-
-
-static u8 *
-sixrd_build_rewrite (vnet_main_t * vnm,
- u32 sw_if_index,
- vnet_link_t link_type, const void *dst_address)
-{
- u8 *rewrite = NULL;
- sixrd_tunnel_t *t;
-
- t = find_tunnel_by_sw_if_index (sw_if_index);
- if (!t)
- {
- return 0;
- }
-
- vec_validate (rewrite, sizeof (ip4_header_t) - 1);
- ip4_header_t *ip4 = (ip4_header_t *) rewrite;
- ip4->ip_version_and_header_length = 0x45;
- ip4->ttl = 64;
- ip4->protocol = IP_PROTOCOL_IPV6;
- /* fixup ip4 header length and checksum after-the-fact */
- ip4->src_address.as_u32 = t->ip4_src.as_u32;
- ip4->dst_address.as_u32 = 0;
- ip4->checksum = ip4_header_checksum (ip4);
-
- return rewrite;
-}
-
-static void
-ip6ip_tunnel_stack (adj_index_t ai, u32 fib_entry_index)
-{
- sixrd_main_t *sm = &sixrd_main;
- ip_adjacency_t *adj = adj_get (ai);
- sixrd_tunnel_t *t;
- u32 sw_if_index = adj->rewrite_header.sw_if_index;
-
- if ((vec_len (sm->tunnel_index_by_sw_if_index) < sw_if_index) ||
- (~0 == sm->tunnel_index_by_sw_if_index[sw_if_index]))
- return;
-
- t =
- pool_elt_at_index (sm->tunnels,
- sm->tunnel_index_by_sw_if_index[sw_if_index]);
-
- /*
- * find the adjacency that is contributed by the FIB entry
- * that this tunnel resolves via, and use it as the next adj
- * in the midchain
- */
- if (vnet_hw_interface_get_flags (vnet_get_main (), t->hw_if_index) &
- VNET_HW_INTERFACE_FLAG_LINK_UP)
- {
- adj_nbr_midchain_stack (ai,
- fib_entry_contribute_ip_forwarding
- (fib_entry_index));
- }
- else
- {
- adj_nbr_midchain_unstack (ai);
- }
-}
-
-static void
-sixrd_tunnel_stack (adj_index_t ai, u32 fib_index)
-{
- dpo_id_t dpo = DPO_INVALID;
- sixrd_main_t *sm = &sixrd_main;
- ip_adjacency_t *adj = adj_get (ai);
- u32 sw_if_index = adj->rewrite_header.sw_if_index;
-
- if ((vec_len (sm->tunnel_index_by_sw_if_index) < sw_if_index) ||
- (~0 == sm->tunnel_index_by_sw_if_index[sw_if_index]))
- return;
-
- if ((vec_len (sm->tunnel_index_by_sw_if_index) < sw_if_index) ||
- (sm->tunnel_index_by_sw_if_index[sw_if_index] == ~0))
- return;
-
- lookup_dpo_add_or_lock_w_fib_index (fib_index, DPO_PROTO_IP4,
- LOOKUP_UNICAST, LOOKUP_INPUT_DST_ADDR,
- LOOKUP_TABLE_FROM_CONFIG, &dpo);
- adj_nbr_midchain_stack (ai, &dpo);
-}
-
-const static ip46_address_t sixrd_special_nh = {
- .ip6 = {
- .as_u64 = {
- [0] = 0xffffffffffffffff,
- [1] = 0xffffffffffffffff,
- },
- },
-};
-
-static void
-sixrd_update_adj (vnet_main_t * vnm, u32 sw_if_index, adj_index_t ai)
-{
- ip_adjacency_t *adj = adj_get (ai);
- sixrd_tunnel_t *t = find_tunnel_by_sw_if_index (sw_if_index);
-
- if (!memcmp (&sixrd_special_nh,
- &adj->sub_type.nbr.next_hop, sizeof (sixrd_special_nh)))
- {
- adj_nbr_midchain_update_rewrite (ai, sixrd_fixup, t, ADJ_FLAG_NONE,
- sixrd_build_rewrite (vnm, sw_if_index,
- adj_get_link_type
- (ai), NULL));
- sixrd_tunnel_stack (ai, t->fib_index);
- }
- else
- {
- sixrd_adj_delegate_t *sixrd_ad;
- ip4_address_t da4;
-
- da4.as_u32 =
- sixrd_get_addr_net (t, adj->sub_type.nbr.next_hop.as_u64[0]);
-
- fib_prefix_t pfx = {
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_len = 32,
- .fp_addr = {.ip4 = da4,}
- ,
- };
-
- adj_nbr_midchain_update_rewrite
- (ai, ip6ip_fixup, t,
- ADJ_FLAG_NONE,
- sixrd_build_rewrite (vnm, sw_if_index,
- adj_get_link_type (ai), NULL));
-
- sixrd_ad =
- sixrd_adj_from_base (adj_delegate_get (adj, sixrd_adj_delegate_type));
- if (NULL == sixrd_ad)
- {
- pool_get (sixrd_adj_delegate_pool, sixrd_ad);
- fib_node_init (&sixrd_ad->sixrd_node, sixrd_fib_node_type);
- sixrd_ad->adj_index = ai;
- sixrd_ad->sixrd_fib_entry_index =
- fib_table_entry_special_add (t->fib_index, &pfx,
- FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE);
- sixrd_ad->sixrd_sibling =
- fib_entry_child_add (sixrd_ad->sixrd_fib_entry_index,
- sixrd_fib_node_type,
- sixrd_ad - sixrd_adj_delegate_pool);
-
- adj_delegate_add (adj,
- sixrd_adj_delegate_type,
- sixrd_ad - sixrd_adj_delegate_pool);
-
- ip6ip_tunnel_stack (ai, sixrd_ad->sixrd_fib_entry_index);
- }
- }
-}
-
-
-clib_error_t *
-sixrd_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
-{
- /* Always up */
- vnet_hw_interface_set_flags (vnm, hw_if_index,
- VNET_HW_INTERFACE_FLAG_LINK_UP);
- return /* no error */ 0;
-}
-
-/* *INDENT-OFF* */
-VNET_HW_INTERFACE_CLASS (sixrd_hw_interface_class) =
-{
- .name = "ip6ip-6rd",
- .build_rewrite = sixrd_build_rewrite,
- .update_adjacency = sixrd_update_adj,
-};
-
-VNET_DEVICE_CLASS (sixrd_device_class) =
-{
- .name = "ip6ip-6rd",
- .admin_up_down_function = sixrd_interface_admin_up_down,
-#ifdef SOON
- .clear counter = 0;
-#endif
-};
-/* *INDENT-ON* */
-
-static int
-sixrd_create_tunnel (ip6_address_t * ip6_prefix, u8 ip6_prefix_len,
- ip4_address_t * ip4_prefix, u8 ip4_prefix_len,
- ip4_address_t * ip4_src, u16 mtu, bool security_check,
- u32 fib_index, u32 * sixrd_tunnel_index)
-{
- sixrd_main_t *sm = &sixrd_main;
- sixrd_tunnel_t *t;
-
- if (fib_index == ~0)
- return VNET_API_ERROR_NO_SUCH_FIB;
-
- if ((ip6_prefix_len + 32 - ip4_prefix_len) > 64)
- return VNET_API_ERROR_INVALID_VALUE;
-
- /* Tunnel already configured */
- if (find_tunnel (ip6_prefix))
- return VNET_API_ERROR_INVALID_VALUE;
- /* Tunnel already configured for this source */
- if (find_tunnel_by_ip4_address (ip4_src))
- return VNET_API_ERROR_INVALID_VALUE;
-
- /* Get tunnel index */
- pool_get_aligned (sm->tunnels, t, CLIB_CACHE_LINE_BYTES);
- memset (t, 0, sizeof (*t));
- t->tunnel_index = t - sm->tunnels;
-
- /* Init tunnel struct */
- t->ip4_prefix.as_u32 = ip4_prefix->as_u32;
- t->ip4_prefix_len = ip4_prefix_len;
- t->ip6_prefix = *ip6_prefix;
- t->ip6_prefix_len = ip6_prefix_len;
- t->ip4_src = *ip4_src;
- t->mtu = mtu ? mtu : SIXRD_DEFAULT_MTU;
- t->security_check = security_check;
-
- t->shift = (ip4_prefix_len < 32) ?
- 64 - ip6_prefix_len - (32 - ip4_prefix_len) : 0;
-
- /* Create interface */
- u32 hw_if_index = vnet_register_interface (vnet_get_main (),
- sixrd_device_class.index,
- t->tunnel_index,
- sixrd_hw_interface_class.index,
- t->tunnel_index);
-
- /* Default the interface to up and enable IPv6 (payload) */
- vnet_hw_interface_t *hi =
- vnet_get_hw_interface (vnet_get_main (), hw_if_index);
- t->hw_if_index = hw_if_index;
- t->fib_index = fib_index;
- t->sw_if_index = hi->sw_if_index;
-
- hi->max_l3_packet_bytes[VLIB_RX] = hi->max_l3_packet_bytes[VLIB_TX] =
- t->mtu;
-
- vec_validate_init_empty (sm->tunnel_index_by_sw_if_index, hi->sw_if_index,
- ~0);
- sm->tunnel_index_by_sw_if_index[hi->sw_if_index] = t->tunnel_index;
-
- hash_set (sm->tunnel_by_ip, ip4_src->as_u32, t->tunnel_index);
-
- vnet_hw_interface_set_flags (vnet_get_main (), hw_if_index,
- VNET_HW_INTERFACE_FLAG_LINK_UP);
- vnet_sw_interface_set_flags (vnet_get_main (), hi->sw_if_index,
- VNET_SW_INTERFACE_FLAG_ADMIN_UP);
-
- /* Create IPv6 route/adjacency */
- fib_prefix_t pfx6 = {
- .fp_proto = FIB_PROTOCOL_IP6,
- .fp_len = t->ip6_prefix_len,
- .fp_addr = {.ip6 = t->ip6_prefix,}
- ,
- };
-
- fib_table_entry_update_one_path (fib_index, &pfx6,
- FIB_SOURCE_CLI, FIB_ENTRY_FLAG_ATTACHED,
- DPO_PROTO_IP6, &sixrd_special_nh,
- hi->sw_if_index,
- ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
-
- *sixrd_tunnel_index = hi->sw_if_index;
-
- ip4_register_protocol (IP_PROTOCOL_IPV6, ip4_sixrd_node.index);
-
- return 0;
-}
-
-/*
- * sixrd_delete_tunnel
- */
-int
-sixrd_delete_tunnel (u32 sw_if_index)
-{
- sixrd_main_t *sm = &sixrd_main;
- sixrd_tunnel_t *t = find_tunnel_by_sw_if_index (sw_if_index);
-
- if (!t)
- {
- clib_warning ("SIXRD tunnel delete: tunnel does not exist: %d",
- sw_if_index);
- return -1;
- }
-
- fib_prefix_t pfx6 = {
- .fp_proto = FIB_PROTOCOL_IP6,
- .fp_len = t->ip6_prefix_len,
- .fp_addr = {.ip6 = t->ip6_prefix,}
- ,
- };
- fib_table_entry_special_remove (0, &pfx6, FIB_SOURCE_CLI);
- vnet_sw_interface_set_flags (vnet_get_main (), t->sw_if_index,
- 0 /* down */ );
-
- sm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0;
-
- hash_unset (sm->tunnel_by_ip, t->ip4_src.as_u32);
-
- vnet_delete_hw_interface (vnet_get_main (), t->hw_if_index);
-
- pool_put (sm->tunnels, t);
-
- return 0;
-}
-
-static clib_error_t *
-sixrd_add_del_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;
- ip4_address_t ip4_prefix;
- ip6_address_t ip6_prefix;
- ip4_address_t ip4_src;
- u32 ip6_prefix_len = 0, ip4_prefix_len = 0, sixrd_tunnel_index;
- u32 num_m_args = 0;
- /* Optional arguments */
- u32 mtu = 0;
- u32 fib_index = 0;
- clib_error_t *error = 0;
- bool is_add = true, security_check = false;
-
- /* 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 = false;
- if (unformat (line_input, "security-check"))
- security_check = true;
- else
- if (unformat
- (line_input, "ip6-pfx %U/%d", unformat_ip6_address, &ip6_prefix,
- &ip6_prefix_len))
- num_m_args++;
- else if (unformat (line_input, "ip4-pfx %U/%d", unformat_ip4_address,
- &ip4_prefix, &ip4_prefix_len))
- num_m_args++;
- else
- if (unformat
- (line_input, "ip4-src %U", unformat_ip4_address, &ip4_src))
- num_m_args++;
- else if (unformat (line_input, "mtu %d", &mtu))
- num_m_args++;
- else if (unformat (line_input, "fib-id %d", &fib_index))
- ;
- else
- {
- error =
- clib_error_return (0, "unknown input `%U'", format_unformat_error,
- line_input);
- goto done;
- }
- }
-
- if (num_m_args < 3)
- {
- error = clib_error_return (0, "mandatory argument(s) missing");
- goto done;
- }
- if (is_add)
- {
- int rv = sixrd_create_tunnel (&ip6_prefix, ip6_prefix_len, &ip4_prefix,
- ip4_prefix_len, &ip4_src, mtu,
- security_check,
- fib_index, &sixrd_tunnel_index);
- if (rv)
- error = clib_error_return (0, "adding tunnel failed");
- }
- else
- {
- sixrd_tunnel_t *t = find_tunnel (&ip6_prefix);
- if (t)
- {
- sixrd_delete_tunnel (t->sw_if_index);
- }
- }
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (sixrd_add_del_tunnel_command, static) =
-{
- .path = "create 6rd tunnel",
- .short_help = "create 6rd tunnel ip6-pfx <ip6-pfx> ip4-pfx <ip4-pfx> "
- "ip4-src <ip4-addr> [del]",
- .function = sixrd_add_del_tunnel_command_fn,
-};
-/* *INDENT-ON* */
-
-static void
-vl_api_sixrd_add_tunnel_t_handler (vl_api_sixrd_add_tunnel_t * mp)
-{
- sixrd_main_t *sm = &sixrd_main;
- vl_api_sixrd_add_tunnel_reply_t *rmp;
- u32 sixrd_tunnel_index;
-
- int rv = sixrd_create_tunnel ((ip6_address_t *) & mp->ip6_prefix,
- mp->ip6_prefix_len,
- (ip4_address_t *) & mp->ip4_prefix,
- mp->ip4_prefix_len,
- (ip4_address_t *) & mp->ip4_src,
- ntohs (mp->mtu),
- mp->security_check, ntohl (mp->fib_index),
- &sixrd_tunnel_index);
-
- REPLY_MACRO2 (VL_API_SIXRD_ADD_TUNNEL_REPLY, (
- {
- rmp->sw_if_index =
- htonl (sixrd_tunnel_index);
- }));
-}
-
-static void
-vl_api_sixrd_del_tunnel_t_handler (vl_api_sixrd_del_tunnel_t * mp)
-{
- sixrd_main_t *sm = &sixrd_main;
- vl_api_sixrd_del_tunnel_reply_t *rmp;
-
- int rv = sixrd_delete_tunnel (ntohl (mp->sw_if_index));
-
- REPLY_MACRO (VL_API_SIXRD_DEL_TUNNEL_REPLY);
-}
-
-/* List of message types that this plugin understands */
-
-#define foreach_sixrd_plugin_api_msg \
-_(SIXRD_ADD_TUNNEL, sixrd_add_tunnel) \
-_(SIXRD_DEL_TUNNEL, sixrd_del_tunnel)
-
-/* *INDENT-OFF* */
-VLIB_PLUGIN_REGISTER() = {
- .version = VPP_BUILD_VER,
- .description = "IPv6 Rapid Deployment on IPv4 Infrastructure (RFC5969)",
-};
-/* *INDENT-ON* */
-
-/**
- * @brief Set up the API message handling tables.
- */
-static clib_error_t *
-sixrd_plugin_api_hookup (vlib_main_t * vm)
-{
- sixrd_main_t *sm = &sixrd_main;
-
-#define _(N, n) \
- vl_msg_api_set_handlers((VL_API_##N + sm->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_sixrd_plugin_api_msg;
-#undef _
-
- return 0;
-}
-
-#define vl_msg_name_crc_list
-#include "sixrd_all_api_h.h"
-#undef vl_msg_name_crc_list
-
-static void
-setup_message_id_table (sixrd_main_t * sm, api_main_t * am)
-{
-#define _(id, n, crc) \
- vl_msg_api_add_msg_name_crc(am, #n "_" #crc, id + sm->msg_id_base);
- foreach_vl_msg_name_crc_sixrd;
-#undef _
-}
-
-static void
-sixrd_adj_delegate_adj_deleted (adj_delegate_t * aed)
-{
- sixrd_adj_delegate_t *sixrd_ad;
-
- sixrd_ad = sixrd_adj_from_base (aed);
-
- fib_entry_child_remove (sixrd_ad->sixrd_fib_entry_index,
- sixrd_ad->sixrd_sibling);
- fib_table_entry_delete_index (sixrd_ad->sixrd_fib_entry_index,
- FIB_SOURCE_RR);
-
- pool_put (sixrd_adj_delegate_pool, sixrd_ad);
-}
-
-static u8 *
-sixrd_adj_delegate_format (const adj_delegate_t * aed, u8 * s)
-{
- const sixrd_adj_delegate_t *sixrd_ad;
-
- sixrd_ad = sixrd_adj_from_const_base (aed);
-
- s = format (s, "SIXRD:[fib-entry:%d]", sixrd_ad->sixrd_fib_entry_index);
-
- return (s);
-}
-
-static void
-sixrd_fib_node_last_lock_gone (fib_node_t * node)
-{
- // top of the dependency tree, locks not managed here.
-}
-
-static sixrd_adj_delegate_t *
-sixrd_adj_delegate_from_fib_node (fib_node_t * node)
-{
- return ((sixrd_adj_delegate_t *) (((char *) node) -
- STRUCT_OFFSET_OF (sixrd_adj_delegate_t,
- sixrd_node)));
-}
-
-static fib_node_back_walk_rc_t
-sixrd_fib_node_back_walk_notify (fib_node_t * node,
- fib_node_back_walk_ctx_t * ctx)
-{
- sixrd_adj_delegate_t *sixrd_ad;
-
- sixrd_ad = sixrd_adj_delegate_from_fib_node (node);
-
- ip6ip_tunnel_stack (sixrd_ad->adj_index, sixrd_ad->sixrd_fib_entry_index);
-
- return (FIB_NODE_BACK_WALK_CONTINUE);
-}
-
-/**
- * Function definition to get a FIB node from its index
- */
-static fib_node_t *
-sixrd_fib_node_get (fib_node_index_t index)
-{
- sixrd_adj_delegate_t *sixrd_ad;
-
- sixrd_ad = pool_elt_at_index (sixrd_adj_delegate_pool, index);
-
- return (&sixrd_ad->sixrd_node);
-}
-
-/**
- * VFT registered with the adjacency delegate
- */
-const static adj_delegate_vft_t sixrd_adj_delegate_vft = {
- .adv_adj_deleted = sixrd_adj_delegate_adj_deleted,
- .adv_format = sixrd_adj_delegate_format,
-};
-
-/**
- * VFT registered with the FIB node for the adj delegate
- */
-const static fib_node_vft_t sixrd_fib_node_vft = {
- .fnv_get = sixrd_fib_node_get,
- .fnv_last_lock = sixrd_fib_node_last_lock_gone,
- .fnv_back_walk = sixrd_fib_node_back_walk_notify,
-};
-
-static clib_error_t *
-sixrd_init (vlib_main_t * vm)
-{
- sixrd_main_t *sm = &sixrd_main;
- clib_error_t *error = 0;
- u8 *name;
-
- name = format (0, "sixrd_%08x%c", api_version, 0);
-
- sm->msg_id_base =
- vl_msg_api_get_msg_ids ((char *) name, VL_MSG_FIRST_AVAILABLE);
- vec_free (name);
- error = sixrd_plugin_api_hookup (vm);
-
- setup_message_id_table (sm, &api_main);
-
- sixrd_adj_delegate_type =
- adj_delegate_register_new_type (&sixrd_adj_delegate_vft);
- sixrd_fib_node_type = fib_node_register_new_type (&sixrd_fib_node_vft);
-
- return error;
-}
-
-VLIB_INIT_FUNCTION (sixrd_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */