diff options
Diffstat (limited to 'src/vnet/devices/virtio/vhost_user_api.c')
| -rw-r--r-- | src/vnet/devices/virtio/vhost_user_api.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/vhost_user_api.c b/src/vnet/devices/virtio/vhost_user_api.c new file mode 100644 index 00000000000..dd517c26f55 --- /dev/null +++ b/src/vnet/devices/virtio/vhost_user_api.c @@ -0,0 +1,262 @@ +/* + *------------------------------------------------------------------ + * vhost-user_api.c - vhost-user 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/devices/virtio/vhost-user.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 \ +_(CREATE_VHOST_USER_IF, create_vhost_user_if) \ +_(MODIFY_VHOST_USER_IF, modify_vhost_user_if) \ +_(DELETE_VHOST_USER_IF, delete_vhost_user_if) \ +_(SW_INTERFACE_VHOST_USER_DUMP, sw_interface_vhost_user_dump) \ +_(SW_INTERFACE_VHOST_USER_DETAILS, sw_interface_vhost_user_details) + +/* + * 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_create_vhost_user_if_t_handler (vl_api_create_vhost_user_if_t * mp) +{ + int rv = 0; + vl_api_create_vhost_user_if_reply_t *rmp; + u32 sw_if_index = (u32) ~ 0; + vnet_main_t *vnm = vnet_get_main (); + vlib_main_t *vm = vlib_get_main (); + + rv = vhost_user_create_if (vnm, vm, (char *) mp->sock_filename, + mp->is_server, &sw_if_index, (u64) ~ 0, + mp->renumber, ntohl (mp->custom_dev_instance), + (mp->use_custom_mac) ? mp->mac_address : NULL); + + /* Remember an interface tag for the new interface */ + if (rv == 0) + { + /* If a tag was supplied... */ + if (mp->tag[0]) + { + /* Make sure it's a proper C-string */ + mp->tag[ARRAY_LEN (mp->tag) - 1] = 0; + u8 *tag = format (0, "%s%c", mp->tag, 0); + vnet_set_sw_interface_tag (vnm, tag, sw_if_index); + } + } + + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_CREATE_VHOST_USER_IF_REPLY, + ({ + rmp->sw_if_index = ntohl (sw_if_index); + })); + /* *INDENT-ON* */ +} + +static void +vl_api_modify_vhost_user_if_t_handler (vl_api_modify_vhost_user_if_t * mp) +{ + int rv = 0; + vl_api_modify_vhost_user_if_reply_t *rmp; + u32 sw_if_index = ntohl (mp->sw_if_index); + + vnet_main_t *vnm = vnet_get_main (); + vlib_main_t *vm = vlib_get_main (); + + rv = vhost_user_modify_if (vnm, vm, (char *) mp->sock_filename, + mp->is_server, sw_if_index, (u64) ~ 0, + mp->renumber, ntohl (mp->custom_dev_instance)); + + REPLY_MACRO (VL_API_MODIFY_VHOST_USER_IF_REPLY); +} + +static void +vl_api_delete_vhost_user_if_t_handler (vl_api_delete_vhost_user_if_t * mp) +{ + int rv = 0; + vl_api_delete_vhost_user_if_reply_t *rmp; + vpe_api_main_t *vam = &vpe_api_main; + u32 sw_if_index = ntohl (mp->sw_if_index); + + vnet_main_t *vnm = vnet_get_main (); + vlib_main_t *vm = vlib_get_main (); + + rv = vhost_user_delete_if (vnm, vm, sw_if_index); + + REPLY_MACRO (VL_API_DELETE_VHOST_USER_IF_REPLY); + if (!rv) + { + unix_shared_memory_queue_t *q = + vl_api_client_index_to_input_queue (mp->client_index); + if (!q) + return; + + vnet_clear_sw_interface_tag (vnm, sw_if_index); + send_sw_interface_flags_deleted (vam, q, sw_if_index); + } +} + +static void + vl_api_sw_interface_vhost_user_details_t_handler + (vl_api_sw_interface_vhost_user_details_t * mp) +{ + clib_warning ("BUG"); +} + +static void +send_sw_interface_vhost_user_details (vpe_api_main_t * am, + unix_shared_memory_queue_t * q, + vhost_user_intf_details_t * vui, + u32 context) +{ + vl_api_sw_interface_vhost_user_details_t *mp; + + mp = vl_msg_api_alloc (sizeof (*mp)); + memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_VHOST_USER_DETAILS); + mp->sw_if_index = ntohl (vui->sw_if_index); + mp->virtio_net_hdr_sz = ntohl (vui->virtio_net_hdr_sz); + mp->features = clib_net_to_host_u64 (vui->features); + mp->is_server = vui->is_server; + mp->num_regions = ntohl (vui->num_regions); + mp->sock_errno = ntohl (vui->sock_errno); + mp->context = context; + + strncpy ((char *) mp->sock_filename, + (char *) vui->sock_filename, ARRAY_LEN (mp->sock_filename) - 1); + strncpy ((char *) mp->interface_name, + (char *) vui->if_name, ARRAY_LEN (mp->interface_name) - 1); + + vl_msg_api_send_shmem (q, (u8 *) & mp); +} + +static void + vl_api_sw_interface_vhost_user_dump_t_handler + (vl_api_sw_interface_vhost_user_dump_t * mp) +{ + int rv = 0; + vpe_api_main_t *am = &vpe_api_main; + vnet_main_t *vnm = vnet_get_main (); + vlib_main_t *vm = vlib_get_main (); + vhost_user_intf_details_t *ifaces = NULL; + vhost_user_intf_details_t *vuid = NULL; + unix_shared_memory_queue_t *q; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + return; + + rv = vhost_user_dump_ifs (vnm, vm, &ifaces); + if (rv) + return; + + vec_foreach (vuid, ifaces) + { + send_sw_interface_vhost_user_details (am, q, vuid, mp->context); + } + vec_free (ifaces); +} + +/* + * vhost-user_api_hookup + * Add vpe's API message handlers to the table. + * vlib has alread 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_vhost_user; +#undef _ +} + +static clib_error_t * +vhost_user_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_vpe_api_msg; +#undef _ + + /* + * Set up the (msg_name, crc, message-id) table + */ + setup_message_id_table (am); + + return 0; +} + +VLIB_API_INIT_FUNCTION (vhost_user_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |