diff options
Diffstat (limited to 'vpp/vnet/vnet/unix/tap_api.c')
| -rw-r--r-- | vpp/vnet/vnet/unix/tap_api.c | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/vpp/vnet/vnet/unix/tap_api.c b/vpp/vnet/vnet/unix/tap_api.c new file mode 100644 index 00000000..99b79ba2 --- /dev/null +++ b/vpp/vnet/vnet/unix/tap_api.c @@ -0,0 +1,257 @@ +/* + *------------------------------------------------------------------ + * 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; + + rv = vnet_tap_connect_renumber (vm, mp->tap_name, + mp->use_random_mac ? 0 : mp->mac_address, + &sw_if_index, mp->renumber, + ntohl (mp->custom_dev_instance)); + + /* 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 (); + + rv = vnet_tap_modify (vm, ntohl (mp->sw_if_index), mp->tap_name, + mp->use_random_mac ? 0 : mp->mac_address, + &sw_if_index, mp->renumber, + ntohl (mp->custom_dev_instance)); + + 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: + */ |