diff options
author | Neale Ranns <nranns@cisco.com> | 2020-09-21 08:17:51 +0000 |
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committer | Damjan Marion <dmarion@me.com> | 2020-09-22 16:01:29 +0000 |
commit | 2b202bc4b2d870d76bfe6fb1906ae62e253cec72 (patch) | |
tree | b05011f96b8d9d080647323e4609af0fac90b612 /src/vnet/lisp-gpe/lisp_gpe_tunnel.c | |
parent | b468773aa4164bf52e0751fdf780f67248037cc0 (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.c | 293 |
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: - */ |