/* *------------------------------------------------------------------ * l2tp_api.c - l2tpv3 api * * 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. *------------------------------------------------------------------ */ #include <vnet/vnet.h> #include <vlibmemory/api.h> #include <vnet/interface.h> #include <vnet/api_errno.h> #include <vnet/l2tp/l2tp.h> #include <vnet/ip/ip_types_api.h> #include <vnet/vnet_msg_enum.h> #define vl_typedefs /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_typedefs #define vl_endianfun /* define message structures */ #include <vnet/vnet_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 <vnet/vnet_all_api_h.h> #undef vl_printfun #include <vlibapi/api_helper_macros.h> #define foreach_vpe_api_msg \ _(L2TPV3_CREATE_TUNNEL, l2tpv3_create_tunnel) \ _(L2TPV3_SET_TUNNEL_COOKIES, l2tpv3_set_tunnel_cookies) \ _(L2TPV3_INTERFACE_ENABLE_DISABLE, l2tpv3_interface_enable_disable) \ _(L2TPV3_SET_LOOKUP_KEY, l2tpv3_set_lookup_key) \ _(SW_IF_L2TPV3_TUNNEL_DUMP, sw_if_l2tpv3_tunnel_dump) static void send_sw_if_l2tpv3_tunnel_details (vpe_api_main_t * am, vl_api_registration_t * reg, l2t_session_t * s, l2t_main_t * lm, u32 context) { vl_api_sw_if_l2tpv3_tunnel_details_t *mp; u8 *if_name = NULL; vnet_sw_interface_t *si = NULL; si = vnet_get_hw_sw_interface (lm->vnet_main, s->hw_if_index); if_name = format (if_name, "%U", format_vnet_sw_interface_name, lm->vnet_main, si); mp = vl_msg_api_alloc (sizeof (*mp)); clib_memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_SW_IF_L2TPV3_TUNNEL_DETAILS); strncpy ((char *) mp->interface_name, (char *) if_name, ARRAY_LEN (mp->interface_name) - 1); mp->sw_if_index = ntohl (si->sw_if_index); mp->local_session_id = s->local_session_id; mp->remote_session_id = s->remote_session_id; mp->local_cookie[0] = s->local_cookie[0]; mp->local_cookie[1] = s->local_cookie[1]; mp->remote_cookie = s->remote_cookie; ip_address_encode ((ip46_address_t *) & s->client_address, IP46_TYPE_IP6, &mp->client_address); ip_address_encode ((ip46_address_t *) & s->our_address, IP46_TYPE_IP6, &mp->our_address); mp->l2_sublayer_present = s->l2_sublayer_present; mp->context = context; vl_api_send_msg (reg, (u8 *) mp); } static void vl_api_sw_if_l2tpv3_tunnel_dump_t_handler (vl_api_sw_if_l2tpv3_tunnel_dump_t * mp) { vpe_api_main_t *am = &vpe_api_main; l2t_main_t *lm = &l2t_main; vl_api_registration_t *reg; l2t_session_t *session; reg = vl_api_client_index_to_registration (mp->client_index); if (!reg) return; /* *INDENT-OFF* */ pool_foreach (session, lm->sessions, ({ send_sw_if_l2tpv3_tunnel_details (am, reg, session, lm, mp->context); })); /* *INDENT-ON* */ } static void vl_api_l2tpv3_create_tunnel_t_handler (vl_api_l2tpv3_create_tunnel_t * mp) { vl_api_l2tpv3_create_tunnel_reply_t *rmp; l2t_main_t *lm = &l2t_main; u32 sw_if_index = (u32) ~ 0; int rv; ip46_address_t client, our; if (mp->our_address.af == ADDRESS_IP4) { rv = VNET_API_ERROR_UNIMPLEMENTED; goto out; } u32 encap_fib_index; if (mp->encap_vrf_id != ~0) { uword *p; ip6_main_t *im = &ip6_main; if (! (p = hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id)))) { rv = VNET_API_ERROR_NO_SUCH_FIB; goto out; } encap_fib_index = p[0]; } else { encap_fib_index = ~0; } ip_address_decode (&mp->client_address, &client); ip_address_decode (&mp->our_address, &our); rv = create_l2tpv3_ipv6_tunnel (lm, &client.ip6, &our.ip6, ntohl (mp->local_session_id), ntohl (mp->remote_session_id), clib_net_to_host_u64 (mp->local_cookie), clib_net_to_host_u64 (mp->remote_cookie), mp->l2_sublayer_present, encap_fib_index, &sw_if_index); out: /* *INDENT-OFF* */ REPLY_MACRO2(VL_API_L2TPV3_CREATE_TUNNEL_REPLY, ({ rmp->sw_if_index = ntohl (sw_if_index); })); /* *INDENT-ON* */ } static void vl_api_l2tpv3_set_tunnel_cookies_t_handler (vl_api_l2tpv3_set_tunnel_cookies_t * mp) { vl_api_l2tpv3_set_tunnel_cookies_reply_t *rmp; l2t_main_t *lm = &l2t_main; int rv; VALIDATE_SW_IF_INDEX (mp); rv = l2tpv3_set_tunnel_cookies (lm, ntohl (mp->sw_if_index), clib_net_to_host_u64 (mp->new_local_cookie), clib_net_to_host_u64 (mp->new_remote_cookie)); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_L2TPV3_SET_TUNNEL_COOKIES_REPLY); } static void vl_api_l2tpv3_interface_enable_disable_t_handler (vl_api_l2tpv3_interface_enable_disable_t * mp) { int rv; vnet_main_t *vnm = vnet_get_main (); vl_api_l2tpv3_interface_enable_disable_reply_t *rmp; VALIDATE_SW_IF_INDEX (mp); rv = l2tpv3_interface_enable_disable (vnm, ntohl (mp->sw_if_index), mp->enable_disable); BAD_SW_IF_INDEX_LABEL; REPLY_MACRO (VL_API_L2TPV3_INTERFACE_ENABLE_DISABLE_REPLY); } static void vl_api_l2tpv3_set_lookup_key_t_handler (vl_api_l2tpv3_set_lookup_key_t * mp) { int rv = 0; l2t_main_t *lm = &l2t_main; vl_api_l2tpv3_set_lookup_key_reply_t *rmp; if (mp->key > L2T_LOOKUP_KEY_API_SESSION_ID) { rv = VNET_API_ERROR_INVALID_VALUE; goto out; } lm->lookup_type = (ip6_to_l2_lookup_t) mp->key; out: REPLY_MACRO (VL_API_L2TPV3_SET_LOOKUP_KEY_REPLY); } /* * l2tp_api_hookup * Add vpe's API message handlers to the table. * vlib has already mapped shared memory and * added the client registration handlers. * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() */ #define vl_msg_name_crc_list #include <vnet/vnet_all_api_h.h> #undef vl_msg_name_crc_list static void setup_message_id_table (api_main_t * am) { #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); foreach_vl_msg_name_crc_l2tp; #undef _ } static clib_error_t * l2tp_api_hookup (vlib_main_t * vm) { api_main_t *am = vlibapi_get_main (); #define _(N,n) \ vl_msg_api_set_handlers(VL_API_##N, #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_msg; #undef _ /* * Set up the (msg_name, crc, message-id) table */ setup_message_id_table (am); return 0; } VLIB_API_INIT_FUNCTION (l2tp_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */