/* *------------------------------------------------------------------ * tap_api.c - vnet tap device driver API support * * 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/ethernet/ethernet.h> #include <vnet/ip/ip.h> #include <vnet/unix/tuntap.h> #include <vnet/unix/tapcli.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_tap_api_msg \ _(TAP_CONNECT, tap_connect) \ _(TAP_MODIFY, tap_modify) \ _(TAP_DELETE, tap_delete) \ _(SW_INTERFACE_TAP_DUMP, sw_interface_tap_dump) #define vl_msg_name_crc_list #include <vnet/unix/tap.api.h> #undef vl_msg_name_crc_list /* * WARNING: replicated pending api refactor completion */ static void send_sw_interface_flags_deleted (vpe_api_main_t * am, unix_shared_memory_queue_t * q, u32 sw_if_index) { vl_api_sw_interface_set_flags_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_SET_FLAGS); mp->sw_if_index = ntohl (sw_if_index); mp->admin_up_down = 0; mp->link_up_down = 0; mp->deleted = 1; vl_msg_api_send_shmem (q, (u8 *) & mp); } static void vl_api_tap_connect_t_handler (vl_api_tap_connect_t * mp) { vlib_main_t *vm = vlib_get_main (); int rv; vl_api_tap_connect_reply_t *rmp; vnet_main_t *vnm = vnet_get_main (); unix_shared_memory_queue_t *q; u32 sw_if_index = (u32) ~ 0; u8 *tag; vnet_tap_connect_args_t _a, *ap = &_a; memset (ap, 0, sizeof (*ap)); ap->intfc_name = mp->tap_name; if (!mp->use_random_mac) ap->hwaddr_arg = mp->mac_address; ap->renumber = mp->renumber; ap->sw_if_indexp = &sw_if_index; ap->custom_dev_instance = ntohl (mp->custom_dev_instance); if (mp->ip4_address_set) { ap->ip4_address = (ip4_address_t *) mp->ip4_address; ap->ip4_mask_width = mp->ip4_mask_width; ap->ip4_address_set = 1; } if (mp->ip6_address_set) { ap->ip6_address = (ip6_address_t *) mp->ip6_address; ap->ip6_mask_width = mp->ip6_mask_width; ap->ip6_address_set = 1; } rv = vnet_tap_connect_renumber (vm, ap); /* Add tag if supplied */ if (rv == 0 && mp->tag[0]) { mp->tag[ARRAY_LEN (mp->tag) - 1] = 0; tag = format (0, "%s%c", mp->tag, 0); vnet_set_sw_interface_tag (vnm, tag, sw_if_index); } q = vl_api_client_index_to_input_queue (mp->client_index); if (!q) return; rmp = vl_msg_api_alloc (sizeof (*rmp)); rmp->_vl_msg_id = ntohs (VL_API_TAP_CONNECT_REPLY); rmp->context = mp->context; rmp->retval = ntohl (rv); rmp->sw_if_index = ntohl (sw_if_index); vl_msg_api_send_shmem (q, (u8 *) & rmp); } static void vl_api_tap_modify_t_handler (vl_api_tap_modify_t * mp) { int rv; vl_api_tap_modify_reply_t *rmp; unix_shared_memory_queue_t *q; u32 sw_if_index = (u32) ~ 0; vlib_main_t *vm = vlib_get_main (); vnet_tap_connect_args_t _a, *ap = &_a; memset (ap, 0, sizeof (*ap)); ap->orig_sw_if_index = ntohl (mp->sw_if_index); ap->intfc_name = mp->tap_name; if (!mp->use_random_mac) ap->hwaddr_arg = mp->mac_address; ap->sw_if_indexp = &sw_if_index; ap->renumber = mp->renumber; ap->custom_dev_instance = ntohl (mp->custom_dev_instance); rv = vnet_tap_modify (vm, ap); q = vl_api_client_index_to_input_queue (mp->client_index); if (!q) return; rmp = vl_msg_api_alloc (sizeof (*rmp)); rmp->_vl_msg_id = ntohs (VL_API_TAP_MODIFY_REPLY); rmp->context = mp->context; rmp->retval = ntohl (rv); rmp->sw_if_index = ntohl (sw_if_index); vl_msg_api_send_shmem (q, (u8 *) & rmp); } static void vl_api_tap_delete_t_handler (vl_api_tap_delete_t * mp) { vlib_main_t *vm = vlib_get_main (); int rv; vpe_api_main_t *vam = &vpe_api_main; vl_api_tap_delete_reply_t *rmp; unix_shared_memory_queue_t *q; u32 sw_if_index = ntohl (mp->sw_if_index); rv = vnet_tap_delete (vm, sw_if_index); if (!rv) { vnet_main_t *vnm = vnet_get_main (); vnet_clear_sw_interface_tag (vnm, sw_if_index); } q = vl_api_client_index_to_input_queue (mp->client_index); if (!q) return; rmp = vl_msg_api_alloc (sizeof (*rmp)); rmp->_vl_msg_id = ntohs (VL_API_TAP_DELETE_REPLY); rmp->context = mp->context; rmp->retval = ntohl (rv); vl_msg_api_send_shmem (q, (u8 *) & rmp); if (!rv) send_sw_interface_flags_deleted (vam, q, sw_if_index); } static void send_sw_interface_tap_details (vpe_api_main_t * am, unix_shared_memory_queue_t * q, tapcli_interface_details_t * tap_if, u32 context) { vl_api_sw_interface_tap_details_t *mp; mp = vl_msg_api_alloc (sizeof (*mp)); memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_TAP_DETAILS); mp->sw_if_index = ntohl (tap_if->sw_if_index); strncpy ((char *) mp->dev_name, (char *) tap_if->dev_name, ARRAY_LEN (mp->dev_name) - 1); mp->context = context; vl_msg_api_send_shmem (q, (u8 *) & mp); } static void vl_api_sw_interface_tap_dump_t_handler (vl_api_sw_interface_tap_dump_t * mp) { int rv = 0; vpe_api_main_t *am = &vpe_api_main; unix_shared_memory_queue_t *q; tapcli_interface_details_t *tapifs = NULL; tapcli_interface_details_t *tap_if = NULL; q = vl_api_client_index_to_input_queue (mp->client_index); if (q == 0) return; rv = vnet_tap_dump_ifs (&tapifs); if (rv) return; vec_foreach (tap_if, tapifs) { send_sw_interface_tap_details (am, q, tap_if, mp->context); } vec_free (tapifs); } 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_tap; #undef _ } static clib_error_t * tap_api_hookup (vlib_main_t * vm) { api_main_t *am = &api_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_tap_api_msg; #undef _ /* * Set up the (msg_name, crc, message-id) table */ setup_message_id_table (am); return 0; } VLIB_API_INIT_FUNCTION (tap_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */