Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 1 | /* |
| 2 | *------------------------------------------------------------------ |
| 3 | * tap_api.c - vnet tap device driver API support |
| 4 | * |
| 5 | * Copyright (c) 2017 Cisco and/or its affiliates. |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at: |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | *------------------------------------------------------------------ |
| 18 | */ |
| 19 | |
| 20 | #include <vnet/vnet.h> |
| 21 | #include <vlibmemory/api.h> |
| 22 | |
| 23 | #include <vnet/interface.h> |
| 24 | #include <vnet/api_errno.h> |
| 25 | #include <vnet/ethernet/ethernet.h> |
| 26 | #include <vnet/ip/ip.h> |
| 27 | |
| 28 | #include <vnet/vnet_msg_enum.h> |
| 29 | |
| 30 | #define vl_typedefs /* define message structures */ |
| 31 | #include <vnet/vnet_all_api_h.h> |
| 32 | #undef vl_typedefs |
| 33 | |
| 34 | #define vl_endianfun /* define message structures */ |
| 35 | #include <vnet/vnet_all_api_h.h> |
| 36 | #undef vl_endianfun |
| 37 | |
| 38 | /* instantiate all the print functions we know about */ |
| 39 | #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) |
| 40 | #define vl_printfun |
| 41 | #include <vnet/vnet_all_api_h.h> |
| 42 | #undef vl_printfun |
| 43 | |
| 44 | #include <vlibapi/api_helper_macros.h> |
Damjan Marion | c99b4cd | 2017-12-04 15:25:58 +0100 | [diff] [blame] | 45 | #include <vnet/devices/tap/tap.h> |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 46 | |
| 47 | #define foreach_tapv2_api_msg \ |
| 48 | _(TAP_CREATE_V2, tap_create_v2) \ |
| 49 | _(TAP_DELETE_V2, tap_delete_v2) \ |
| 50 | _(SW_INTERFACE_TAP_V2_DUMP, sw_interface_tap_v2_dump) |
| 51 | |
| 52 | static void |
| 53 | vl_api_tap_create_v2_t_handler (vl_api_tap_create_v2_t * mp) |
| 54 | { |
Jerome Tollet | 0b06111 | 2018-06-04 16:40:26 +0100 | [diff] [blame] | 55 | vnet_main_t *vnm = vnet_get_main (); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 56 | vlib_main_t *vm = vlib_get_main (); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 57 | vl_api_tap_create_v2_reply_t *rmp; |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 58 | vl_api_registration_t *reg; |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 59 | tap_create_if_args_t _a, *ap = &_a; |
| 60 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 61 | clib_memset (ap, 0, sizeof (*ap)); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 62 | |
Steven | 9e63569 | 2018-03-01 09:36:01 -0800 | [diff] [blame] | 63 | ap->id = ntohl (mp->id); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 64 | if (!mp->use_random_mac) |
| 65 | { |
Damjan Marion | 2df3909 | 2017-12-04 20:03:37 +0100 | [diff] [blame] | 66 | clib_memcpy (ap->mac_addr, mp->mac_address, 6); |
| 67 | ap->mac_addr_set = 1; |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 68 | } |
Milan Lenco | 2aef64f | 2017-12-05 12:18:15 +0100 | [diff] [blame] | 69 | ap->rx_ring_sz = ntohs (mp->rx_ring_sz); |
| 70 | ap->tx_ring_sz = ntohs (mp->tx_ring_sz); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 71 | ap->sw_if_index = (u32) ~ 0; |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 72 | |
Damjan Marion | 2df3909 | 2017-12-04 20:03:37 +0100 | [diff] [blame] | 73 | if (mp->host_if_name_set) |
| 74 | ap->host_if_name = mp->host_if_name; |
| 75 | |
| 76 | if (mp->host_mac_addr_set) |
| 77 | { |
| 78 | clib_memcpy (ap->host_mac_addr, mp->host_mac_addr, 6); |
| 79 | ap->mac_addr_set = 1; |
| 80 | } |
| 81 | |
Damjan Marion | 91c6ef7 | 2017-12-01 13:34:24 +0100 | [diff] [blame] | 82 | if (mp->host_namespace_set) |
| 83 | ap->host_namespace = mp->host_namespace; |
| 84 | |
| 85 | if (mp->host_bridge_set) |
| 86 | ap->host_bridge = mp->host_bridge; |
| 87 | |
| 88 | if (mp->host_ip4_addr_set) |
| 89 | { |
| 90 | clib_memcpy (&ap->host_ip4_addr.as_u8, mp->host_ip4_addr, 4); |
| 91 | ap->host_ip4_prefix_len = mp->host_ip4_prefix_len; |
| 92 | } |
| 93 | |
| 94 | if (mp->host_ip6_addr_set) |
| 95 | { |
| 96 | clib_memcpy (&ap->host_ip6_addr, mp->host_ip6_addr, 16); |
| 97 | ap->host_ip6_prefix_len = mp->host_ip6_prefix_len; |
| 98 | } |
| 99 | |
Damjan Marion | 7866c45 | 2018-01-18 13:35:11 +0100 | [diff] [blame] | 100 | if (mp->host_ip4_gw_set) |
| 101 | { |
| 102 | clib_memcpy (&ap->host_ip4_gw, mp->host_ip4_gw, 4); |
| 103 | ap->host_ip4_gw_set = 1; |
| 104 | } |
| 105 | |
| 106 | if (mp->host_ip6_gw_set) |
| 107 | { |
| 108 | clib_memcpy (&ap->host_ip6_gw, mp->host_ip6_gw, 16); |
| 109 | ap->host_ip6_gw_set = 1; |
| 110 | } |
| 111 | |
Andrew Yourtchenko | 754f24b | 2019-01-07 20:56:46 +0100 | [diff] [blame] | 112 | ap->tap_flags = ntohl (mp->tap_flags); |
| 113 | |
Damjan Marion | 91c6ef7 | 2017-12-01 13:34:24 +0100 | [diff] [blame] | 114 | tap_create_if (vm, ap); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 115 | |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 116 | reg = vl_api_client_index_to_registration (mp->client_index); |
| 117 | if (!reg) |
| 118 | return;; |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 119 | |
Jerome Tollet | 0b06111 | 2018-06-04 16:40:26 +0100 | [diff] [blame] | 120 | /* If a tag was supplied... */ |
| 121 | if (mp->tag[0]) |
| 122 | { |
| 123 | /* Make sure it's a proper C-string */ |
| 124 | mp->tag[ARRAY_LEN (mp->tag) - 1] = 0; |
| 125 | u8 *tag = format (0, "%s%c", mp->tag, 0); |
| 126 | vnet_set_sw_interface_tag (vnm, tag, ap->sw_if_index); |
| 127 | } |
| 128 | |
| 129 | |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 130 | rmp = vl_msg_api_alloc (sizeof (*rmp)); |
| 131 | rmp->_vl_msg_id = ntohs (VL_API_TAP_CREATE_V2_REPLY); |
| 132 | rmp->context = mp->context; |
Damjan Marion | 91c6ef7 | 2017-12-01 13:34:24 +0100 | [diff] [blame] | 133 | rmp->retval = ntohl (ap->rv); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 134 | rmp->sw_if_index = ntohl (ap->sw_if_index); |
| 135 | |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 136 | vl_api_send_msg (reg, (u8 *) rmp); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | static void |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 140 | vl_api_tap_delete_v2_t_handler (vl_api_tap_delete_v2_t * mp) |
| 141 | { |
Jerome Tollet | 0b06111 | 2018-06-04 16:40:26 +0100 | [diff] [blame] | 142 | vnet_main_t *vnm = vnet_get_main (); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 143 | vlib_main_t *vm = vlib_get_main (); |
| 144 | int rv; |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 145 | vl_api_tap_delete_v2_reply_t *rmp; |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 146 | vl_api_registration_t *reg; |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 147 | u32 sw_if_index = ntohl (mp->sw_if_index); |
| 148 | |
| 149 | rv = tap_delete_if (vm, sw_if_index); |
| 150 | |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 151 | reg = vl_api_client_index_to_registration (mp->client_index); |
| 152 | if (!reg) |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 153 | return; |
| 154 | |
| 155 | rmp = vl_msg_api_alloc (sizeof (*rmp)); |
| 156 | rmp->_vl_msg_id = ntohs (VL_API_TAP_DELETE_V2_REPLY); |
| 157 | rmp->context = mp->context; |
| 158 | rmp->retval = ntohl (rv); |
| 159 | |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 160 | vl_api_send_msg (reg, (u8 *) rmp); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 161 | |
| 162 | if (!rv) |
Ole Troan | 2e1c896 | 2019-04-10 09:44:23 +0200 | [diff] [blame^] | 163 | vnet_clear_sw_interface_tag (vnm, sw_if_index); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 164 | } |
| 165 | |
| 166 | static void |
| 167 | tap_send_sw_interface_details (vpe_api_main_t * am, |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 168 | vl_api_registration_t * reg, |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 169 | tap_interface_details_t * tap_if, u32 context) |
| 170 | { |
| 171 | vl_api_sw_interface_tap_v2_details_t *mp; |
| 172 | mp = vl_msg_api_alloc (sizeof (*mp)); |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 173 | clib_memset (mp, 0, sizeof (*mp)); |
Milan Lenco | 73e7f42 | 2017-12-14 10:04:25 +0100 | [diff] [blame] | 174 | mp->_vl_msg_id = htons (VL_API_SW_INTERFACE_TAP_V2_DETAILS); |
| 175 | mp->id = htonl (tap_if->id); |
| 176 | mp->sw_if_index = htonl (tap_if->sw_if_index); |
Andrew Yourtchenko | 754f24b | 2019-01-07 20:56:46 +0100 | [diff] [blame] | 177 | mp->tap_flags = htonl (tap_if->tap_flags); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 178 | clib_memcpy (mp->dev_name, tap_if->dev_name, |
| 179 | MIN (ARRAY_LEN (mp->dev_name) - 1, |
| 180 | strlen ((const char *) tap_if->dev_name))); |
Milan Lenco | 73e7f42 | 2017-12-14 10:04:25 +0100 | [diff] [blame] | 181 | mp->rx_ring_sz = htons (tap_if->rx_ring_sz); |
| 182 | mp->tx_ring_sz = htons (tap_if->tx_ring_sz); |
| 183 | clib_memcpy (mp->host_mac_addr, tap_if->host_mac_addr, 6); |
| 184 | clib_memcpy (mp->host_if_name, tap_if->host_if_name, |
| 185 | MIN (ARRAY_LEN (mp->host_if_name) - 1, |
| 186 | strlen ((const char *) tap_if->host_if_name))); |
| 187 | clib_memcpy (mp->host_namespace, tap_if->host_namespace, |
| 188 | MIN (ARRAY_LEN (mp->host_namespace) - 1, |
| 189 | strlen ((const char *) tap_if->host_namespace))); |
| 190 | clib_memcpy (mp->host_bridge, tap_if->host_bridge, |
| 191 | MIN (ARRAY_LEN (mp->host_bridge) - 1, |
| 192 | strlen ((const char *) tap_if->host_bridge))); |
| 193 | if (tap_if->host_ip4_prefix_len) |
| 194 | clib_memcpy (&mp->host_ip4_addr, &tap_if->host_ip4_addr, 4); |
| 195 | mp->host_ip4_prefix_len = tap_if->host_ip4_prefix_len; |
| 196 | if (tap_if->host_ip6_prefix_len) |
| 197 | clib_memcpy (&mp->host_ip6_addr, &tap_if->host_ip6_addr, 16); |
| 198 | mp->host_ip6_prefix_len = tap_if->host_ip6_prefix_len; |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 199 | |
Milan Lenco | 73e7f42 | 2017-12-14 10:04:25 +0100 | [diff] [blame] | 200 | mp->context = context; |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 201 | vl_api_send_msg (reg, (u8 *) mp); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | static void |
| 205 | vl_api_sw_interface_tap_v2_dump_t_handler (vl_api_sw_interface_tap_v2_dump_t * |
| 206 | mp) |
| 207 | { |
| 208 | int rv; |
| 209 | vpe_api_main_t *am = &vpe_api_main; |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 210 | vl_api_registration_t *reg; |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 211 | tap_interface_details_t *tapifs = NULL; |
| 212 | tap_interface_details_t *tap_if = NULL; |
| 213 | |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 214 | reg = vl_api_client_index_to_registration (mp->client_index); |
| 215 | if (!reg) |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 216 | return; |
| 217 | |
| 218 | rv = tap_dump_ifs (&tapifs); |
| 219 | if (rv) |
| 220 | return; |
| 221 | |
| 222 | vec_foreach (tap_if, tapifs) |
| 223 | { |
Florin Coras | 6c4dae2 | 2018-01-09 06:39:23 -0800 | [diff] [blame] | 224 | tap_send_sw_interface_details (am, reg, tap_if, mp->context); |
Damjan Marion | 8389fb9 | 2017-10-13 18:29:53 +0200 | [diff] [blame] | 225 | } |
| 226 | |
| 227 | vec_free (tapifs); |
| 228 | } |
| 229 | |
| 230 | #define vl_msg_name_crc_list |
| 231 | #include <vnet/vnet_all_api_h.h> |
| 232 | #undef vl_msg_name_crc_list |
| 233 | |
| 234 | static void |
| 235 | tap_setup_message_id_table (api_main_t * am) |
| 236 | { |
| 237 | #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); |
| 238 | foreach_vl_msg_name_crc_tapv2; |
| 239 | #undef _ |
| 240 | } |
| 241 | |
| 242 | static clib_error_t * |
| 243 | tapv2_api_hookup (vlib_main_t * vm) |
| 244 | { |
| 245 | api_main_t *am = &api_main; |
| 246 | |
| 247 | #define _(N,n) \ |
| 248 | vl_msg_api_set_handlers(VL_API_##N, #n, \ |
| 249 | vl_api_##n##_t_handler, \ |
| 250 | vl_noop_handler, \ |
| 251 | vl_api_##n##_t_endian, \ |
| 252 | vl_api_##n##_t_print, \ |
| 253 | sizeof(vl_api_##n##_t), 1); |
| 254 | foreach_tapv2_api_msg; |
| 255 | #undef _ |
| 256 | |
| 257 | /* |
| 258 | * Set up the (msg_name, crc, message-id) table |
| 259 | */ |
| 260 | tap_setup_message_id_table (am); |
| 261 | |
| 262 | return 0; |
| 263 | } |
| 264 | |
| 265 | VLIB_API_INIT_FUNCTION (tapv2_api_hookup); |
| 266 | |
| 267 | /* |
| 268 | * fd.io coding-style-patch-verification: ON |
| 269 | * |
| 270 | * Local Variables: |
| 271 | * eval: (c-set-style "gnu") |
| 272 | * End: |
| 273 | */ |