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authorNeale Ranns <nranns@cisco.com>2020-09-21 08:17:51 +0000
committerDamjan Marion <dmarion@me.com>2020-09-22 16:01:29 +0000
commit2b202bc4b2d870d76bfe6fb1906ae62e253cec72 (patch)
treeb05011f96b8d9d080647323e4609af0fac90b612 /src/vnet/lisp-gpe/lisp_gpe_tunnel.c
parentb468773aa4164bf52e0751fdf780f67248037cc0 (diff)
lisp: Move to plugin
Type: refactor Change-Id: I54df533a8f863c4e49742903cf2457f18b4fc506 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/lisp-gpe/lisp_gpe_tunnel.c')
-rw-r--r--src/vnet/lisp-gpe/lisp_gpe_tunnel.c293
1 files changed, 0 insertions, 293 deletions
diff --git a/src/vnet/lisp-gpe/lisp_gpe_tunnel.c b/src/vnet/lisp-gpe/lisp_gpe_tunnel.c
deleted file mode 100644
index 0373542ba34..00000000000
--- a/src/vnet/lisp-gpe/lisp_gpe_tunnel.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/*
- * Copyright (c) 2016 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.
- */
-/**
- * @file
- * @brief Common utility functions for IPv4, IPv6 and L2 LISP-GPE tunnels.
- *
- */
-#include <vnet/lisp-gpe/lisp_gpe.h>
-#include <vnet/lisp-gpe/lisp_gpe_tunnel.h>
-#include <vnet/lisp-gpe/lisp_gpe_adjacency.h>
-
-#include <vnet/fib/fib_table.h>
-
-/**
- * @brief Pool of all LISP tunnels
- */
-static lisp_gpe_tunnel_t *lisp_gpe_tunnel_pool;
-
-/**
- * @brief a DB of all tunnels
- */
-static uword *lisp_gpe_tunnel_db;
-
-/**
- * @brief Compute IP-UDP-GPE sub-tunnel encap/rewrite header.
- *
- * @param[in] t Parent of the sub-tunnel.
- * @param[in] st Sub-tunnel.
- * @param[in] lp Local and remote locators used in the encap header.
- *
- * @return 0 on success.
- */
-u8 *
-lisp_gpe_tunnel_build_rewrite (const lisp_gpe_tunnel_t * lgt,
- const lisp_gpe_adjacency_t * ladj,
- lisp_gpe_next_protocol_e payload_proto)
-{
- lisp_gpe_header_t *lisp0;
- u8 *rw = 0;
- int len;
- gpe_encap_mode_t encap_mode = vnet_gpe_get_encap_mode ();
-
- if (AF_IP4 == ip_addr_version (&lgt->key->lcl))
- {
- ip4_udp_lisp_gpe_header_t *h0;
- ip4_header_t *ip0;
-
- len = sizeof (*h0);
-
- vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES);
-
- h0 = (ip4_udp_lisp_gpe_header_t *) rw;
-
- /* Fixed portion of the (outer) ip4 header */
- ip0 = &h0->ip4;
- ip0->ip_version_and_header_length = 0x45;
- ip0->ttl = 254;
- ip0->protocol = IP_PROTOCOL_UDP;
-
- /* we fix up the ip4 header length and checksum after-the-fact */
- ip_address_copy_addr (&ip0->src_address, &lgt->key->lcl);
- ip_address_copy_addr (&ip0->dst_address, &lgt->key->rmt);
- ip0->checksum = ip4_header_checksum (ip0);
-
- /* UDP header, randomize src port on something, maybe? */
- h0->udp.src_port = clib_host_to_net_u16 (4341);
- h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_lisp_gpe);
-
- /* LISP-gpe header */
- lisp0 = &h0->lisp;
- }
- else
- {
- ip6_udp_lisp_gpe_header_t *h0;
- ip6_header_t *ip0;
-
- len = sizeof (*h0);
-
- vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES);
-
- h0 = (ip6_udp_lisp_gpe_header_t *) rw;
-
- /* Fixed portion of the (outer) ip6 header */
- ip0 = &h0->ip6;
- ip0->ip_version_traffic_class_and_flow_label =
- clib_host_to_net_u32 (0x6 << 28);
- ip0->hop_limit = 254;
- ip0->protocol = IP_PROTOCOL_UDP;
-
- /* we fix up the ip6 header length after-the-fact */
- ip_address_copy_addr (&ip0->src_address, &lgt->key->lcl);
- ip_address_copy_addr (&ip0->dst_address, &lgt->key->rmt);
-
- /* UDP header, randomize src port on something, maybe? */
- h0->udp.src_port = clib_host_to_net_u16 (4341);
- h0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_lisp_gpe);
-
- /* LISP-gpe header */
- lisp0 = &h0->lisp;
- }
-
- lisp0->flags = ladj->flags;
- if (GPE_ENCAP_VXLAN == encap_mode)
- /* unset P flag */
- lisp0->flags &= ~LISP_GPE_FLAGS_P;
-
- lisp0->ver_res = 0;
- lisp0->res = 0;
- lisp0->next_protocol = payload_proto;
- lisp0->iid = clib_host_to_net_u32 (ladj->vni) >> 8; /* first 24 bits only */
-
- return (rw);
-}
-
-static lisp_gpe_tunnel_t *
-lisp_gpe_tunnel_db_find (const lisp_gpe_tunnel_key_t * key)
-{
- uword *p;
-
- p = hash_get_mem (lisp_gpe_tunnel_db, (void *) key);
-
- if (NULL != p)
- {
- return (pool_elt_at_index (lisp_gpe_tunnel_pool, p[0]));
- }
- return (NULL);
-}
-
-lisp_gpe_tunnel_t *
-lisp_gpe_tunnel_get_i (index_t lgti)
-{
- return (pool_elt_at_index (lisp_gpe_tunnel_pool, lgti));
-}
-
-index_t
-lisp_gpe_tunnel_find_or_create_and_lock (const locator_pair_t * pair,
- u32 rloc_fib_index)
-{
- lisp_gpe_tunnel_key_t key = {
- .lcl = pair->lcl_loc,
- .rmt = pair->rmt_loc,
- .fib_index = rloc_fib_index,
- };
- lisp_gpe_tunnel_t *lgt;
- fib_prefix_t pfx;
-
- lgt = lisp_gpe_tunnel_db_find (&key);
-
- if (NULL == lgt)
- {
- pool_get (lisp_gpe_tunnel_pool, lgt);
- clib_memset (lgt, 0, sizeof (*lgt));
-
- lgt->key = clib_mem_alloc (sizeof (*lgt->key));
- clib_memset (lgt->key, 0, sizeof (*lgt->key));
-
- lgt->key->rmt = pair->rmt_loc;
- lgt->key->lcl = pair->lcl_loc;
- lgt->key->fib_index = rloc_fib_index;
-
- /*
- * source the FIB entry for the RLOC so we can track its forwarding
- * chain
- */
- ip_address_to_fib_prefix (&lgt->key->rmt, &pfx);
-
- lgt->fib_entry_index = fib_table_entry_special_add (rloc_fib_index,
- &pfx,
- FIB_SOURCE_RR,
- FIB_ENTRY_FLAG_NONE);
-
- hash_set_mem (lisp_gpe_tunnel_db, lgt->key,
- (lgt - lisp_gpe_tunnel_pool));
- }
-
- lgt->locks++;
-
- return (lgt - lisp_gpe_tunnel_pool);
-}
-
-void
-lisp_gpe_tunnel_unlock (index_t lgti)
-{
- lisp_gpe_tunnel_t *lgt;
-
- lgt = lisp_gpe_tunnel_get_i (lgti);
- lgt->locks--;
-
- if (0 == lgt->locks)
- {
- hash_unset_mem (lisp_gpe_tunnel_db, lgt->key);
- clib_mem_free (lgt->key);
- pool_put (lisp_gpe_tunnel_pool, lgt);
- }
-}
-
-const lisp_gpe_tunnel_t *
-lisp_gpe_tunnel_get (index_t lgti)
-{
- return (lisp_gpe_tunnel_get_i (lgti));
-}
-
-/** Format LISP-GPE tunnel. */
-u8 *
-format_lisp_gpe_tunnel (u8 * s, va_list * args)
-{
- lisp_gpe_tunnel_t *lgt = va_arg (*args, lisp_gpe_tunnel_t *);
-
- s = format (s, "tunnel %d\n", lgt - lisp_gpe_tunnel_pool);
- s = format (s, " fib-index: %d, locks:%d \n",
- lgt->key->fib_index, lgt->locks);
- s = format (s, " lisp ver 0\n");
-
- s = format (s, " locator-pair:\n");
- s = format (s, " local: %U remote: %U\n",
- format_ip_address, &lgt->key->lcl,
- format_ip_address, &lgt->key->rmt);
- s = format (s, " RLOC FIB entry: %d\n", lgt->fib_entry_index);
-
- return s;
-}
-
-/**
- * CLI command to show LISP-GPE tunnels.
- */
-static clib_error_t *
-show_lisp_gpe_tunnel_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- lisp_gpe_tunnel_t *lgt;
- index_t index;
-
- if (pool_elts (lisp_gpe_tunnel_pool) == 0)
- vlib_cli_output (vm, "No lisp-gpe tunnels configured...");
-
- if (unformat (input, "%d", &index))
- {
- lgt = lisp_gpe_tunnel_get_i (index);
- vlib_cli_output (vm, "%U", format_lisp_gpe_tunnel, lgt);
- }
- else
- {
- /* *INDENT-OFF* */
- pool_foreach (lgt, lisp_gpe_tunnel_pool,
- ({
- vlib_cli_output (vm, "%U", format_lisp_gpe_tunnel, lgt);
- }));
- /* *INDENT-ON* */
- }
-
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_lisp_gpe_tunnel_command, static) =
-{
- .path = "show gpe tunnel",
- .function = show_lisp_gpe_tunnel_command_fn,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-lisp_gpe_tunnel_module_init (vlib_main_t * vm)
-{
- lisp_gpe_tunnel_db = hash_create_mem (0,
- sizeof (lisp_gpe_tunnel_key_t),
- sizeof (uword));
-
- return (NULL);
-}
-
-VLIB_INIT_FUNCTION (lisp_gpe_tunnel_module_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */