Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 1 | /* |
| 2 | *------------------------------------------------------------------ |
| 3 | * af_packet.c - linux kernel packet interface |
| 4 | * |
| 5 | * Copyright (c) 2016 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 <linux/if_ether.h> |
| 21 | #include <linux/if_packet.h> |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 22 | #include <sys/ioctl.h> |
| 23 | #include <net/if.h> |
Ray Kinsella | c855b73 | 2017-04-21 12:24:43 +0100 | [diff] [blame] | 24 | #include <dirent.h> |
Ray Kinsella | 7bfa119 | 2017-05-15 11:52:43 +0100 | [diff] [blame] | 25 | #include <sys/stat.h> |
| 26 | #include <sys/types.h> |
| 27 | #include <fcntl.h> |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 28 | |
Damjan Marion | 01914ce | 2017-09-14 19:04:50 +0200 | [diff] [blame] | 29 | #include <vppinfra/linux/sysfs.h> |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 30 | #include <vlib/vlib.h> |
| 31 | #include <vlib/unix/unix.h> |
| 32 | #include <vnet/ip/ip.h> |
Aloys Augustin | e39376e | 2021-03-29 22:08:09 +0200 | [diff] [blame] | 33 | #include <vnet/devices/netlink.h> |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 34 | #include <vnet/ethernet/ethernet.h> |
Mohammed Hawari | 85c1943 | 2020-12-18 16:29:45 +0100 | [diff] [blame] | 35 | #include <vnet/interface/rx_queue_funcs.h> |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 36 | |
| 37 | #include <vnet/devices/af_packet/af_packet.h> |
| 38 | |
Dave Wallace | 71612d6 | 2017-10-24 01:32:41 -0400 | [diff] [blame] | 39 | af_packet_main_t af_packet_main; |
| 40 | |
Mohsin Kazmi | cae84fa | 2021-10-08 15:10:49 +0000 | [diff] [blame] | 41 | VNET_HW_INTERFACE_CLASS (af_packet_ip_device_hw_interface_class, static) = { |
| 42 | .name = "af-packet-ip-device", |
| 43 | .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P, |
| 44 | }; |
| 45 | |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 46 | #define AF_PACKET_DEFAULT_TX_FRAMES_PER_BLOCK 1024 |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 47 | #define AF_PACKET_DEFAULT_TX_FRAME_SIZE (2048 * 33) // GSO packet of 64KB |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 48 | #define AF_PACKET_TX_BLOCK_NR 1 |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 49 | |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 50 | #define AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK 256 |
| 51 | #define AF_PACKET_DEFAULT_RX_FRAME_SIZE 2048 |
| 52 | #define AF_PACKET_RX_BLOCK_NR 20 |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 53 | |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 54 | /*defined in net/if.h but clashes with dpdk headers */ |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 55 | unsigned int if_nametoindex (const char *ifname); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 56 | |
Damjan Marion | 88a9c0e | 2022-01-06 21:14:08 +0100 | [diff] [blame] | 57 | static clib_error_t * |
Damjan Marion | 1cd0e5d | 2022-01-17 14:49:17 +0100 | [diff] [blame] | 58 | af_packet_eth_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hi, |
| 59 | u32 frame_size) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 60 | { |
Damjan Marion | 88a9c0e | 2022-01-06 21:14:08 +0100 | [diff] [blame] | 61 | clib_error_t *error, *rv; |
Ray Kinsella | 7bfa119 | 2017-05-15 11:52:43 +0100 | [diff] [blame] | 62 | af_packet_main_t *apm = &af_packet_main; |
Damjan Marion | 88a9c0e | 2022-01-06 21:14:08 +0100 | [diff] [blame] | 63 | af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, hi->dev_instance); |
Ray Kinsella | 7bfa119 | 2017-05-15 11:52:43 +0100 | [diff] [blame] | 64 | |
Damjan Marion | 1cd0e5d | 2022-01-17 14:49:17 +0100 | [diff] [blame] | 65 | error = vnet_netlink_set_link_mtu (apif->host_if_index, |
| 66 | frame_size + hi->frame_overhead); |
Damjan Marion | 88a9c0e | 2022-01-06 21:14:08 +0100 | [diff] [blame] | 67 | |
| 68 | if (error) |
Ray Kinsella | 7bfa119 | 2017-05-15 11:52:43 +0100 | [diff] [blame] | 69 | { |
Damjan Marion | 88a9c0e | 2022-01-06 21:14:08 +0100 | [diff] [blame] | 70 | vlib_log_err (apm->log_class, "netlink failed to change MTU: %U", |
| 71 | format_clib_error, error); |
| 72 | rv = vnet_error (VNET_ERR_SYSCALL_ERROR_1, "netlink error: %U", |
| 73 | format_clib_error, error); |
| 74 | clib_error_free (error); |
| 75 | return rv; |
Ray Kinsella | 7bfa119 | 2017-05-15 11:52:43 +0100 | [diff] [blame] | 76 | } |
Damjan Marion | 88a9c0e | 2022-01-06 21:14:08 +0100 | [diff] [blame] | 77 | else |
Damjan Marion | 1cd0e5d | 2022-01-17 14:49:17 +0100 | [diff] [blame] | 78 | apif->host_mtu = frame_size + hi->frame_overhead; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 79 | return 0; |
| 80 | } |
| 81 | |
Nathan Skrzypczak | ffc6bdc | 2021-02-01 17:13:59 +0100 | [diff] [blame] | 82 | static int |
| 83 | af_packet_read_mtu (af_packet_if_t *apif) |
| 84 | { |
| 85 | af_packet_main_t *apm = &af_packet_main; |
| 86 | clib_error_t *error; |
Aloys Augustin | e39376e | 2021-03-29 22:08:09 +0200 | [diff] [blame] | 87 | error = vnet_netlink_get_link_mtu (apif->host_if_index, &apif->host_mtu); |
Nathan Skrzypczak | ffc6bdc | 2021-02-01 17:13:59 +0100 | [diff] [blame] | 88 | if (error) |
| 89 | { |
Aloys Augustin | e39376e | 2021-03-29 22:08:09 +0200 | [diff] [blame] | 90 | vlib_log_err (apm->log_class, "netlink failed to get MTU: %U", |
Nathan Skrzypczak | ffc6bdc | 2021-02-01 17:13:59 +0100 | [diff] [blame] | 91 | format_clib_error, error); |
| 92 | clib_error_free (error); |
| 93 | return VNET_API_ERROR_SYSCALL_ERROR_1; |
| 94 | } |
| 95 | return 0; |
| 96 | } |
| 97 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 98 | static clib_error_t * |
Damjan Marion | 56dd543 | 2017-09-08 19:52:02 +0200 | [diff] [blame] | 99 | af_packet_fd_read_ready (clib_file_t * uf) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 100 | { |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 101 | af_packet_main_t *apm = &af_packet_main; |
Damjan Marion | eb743fa | 2017-03-20 16:34:15 +0100 | [diff] [blame] | 102 | vnet_main_t *vnm = vnet_get_main (); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 103 | u32 idx = uf->private_data; |
Damjan Marion | eb743fa | 2017-03-20 16:34:15 +0100 | [diff] [blame] | 104 | af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, idx); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 105 | |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 106 | /* Schedule the rx node */ |
Mohammed Hawari | 85c1943 | 2020-12-18 16:29:45 +0100 | [diff] [blame] | 107 | vnet_hw_if_rx_queue_set_int_pending (vnm, apif->queue_index); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static int |
Ray Kinsella | c855b73 | 2017-04-21 12:24:43 +0100 | [diff] [blame] | 112 | is_bridge (const u8 * host_if_name) |
| 113 | { |
| 114 | u8 *s; |
| 115 | DIR *dir = NULL; |
| 116 | |
| 117 | s = format (0, "/sys/class/net/%s/bridge%c", host_if_name, 0); |
| 118 | dir = opendir ((char *) s); |
| 119 | vec_free (s); |
| 120 | |
| 121 | if (dir) |
| 122 | { |
| 123 | closedir (dir); |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | return -1; |
| 128 | } |
| 129 | |
| 130 | static int |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 131 | create_packet_v3_sock (int host_if_index, tpacket_req3_t *rx_req, |
| 132 | tpacket_req3_t *tx_req, int *fd, u8 **ring, |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 133 | u32 *hdrlen_ptr, u8 *is_cksum_gso_enabled) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 134 | { |
Mohsin Kazmi | acba9f7 | 2018-05-17 15:42:27 +0200 | [diff] [blame] | 135 | af_packet_main_t *apm = &af_packet_main; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 136 | struct sockaddr_ll sll; |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 137 | socklen_t req_sz = sizeof (tpacket_req3_t); |
| 138 | int ret; |
| 139 | int ver = TPACKET_V3; |
| 140 | u32 hdrlen = 0; |
| 141 | u32 len = sizeof (hdrlen); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 142 | u32 ring_sz = rx_req->tp_block_size * rx_req->tp_block_nr + |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 143 | tx_req->tp_block_size * tx_req->tp_block_nr; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 144 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 145 | if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 146 | { |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 147 | vlib_log_debug (apm->log_class, |
| 148 | "Failed to create AF_PACKET socket: %s (errno %d)", |
| 149 | strerror (errno), errno); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 150 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 151 | goto error; |
| 152 | } |
Damjan Marion | c517020 | 2017-10-11 14:15:47 +0200 | [diff] [blame] | 153 | |
Chaoyu Jin | afb1930 | 2018-03-13 07:37:41 -0700 | [diff] [blame] | 154 | /* bind before rx ring is cfged so we don't receive packets from other interfaces */ |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 155 | clib_memset (&sll, 0, sizeof (sll)); |
Chaoyu Jin | afb1930 | 2018-03-13 07:37:41 -0700 | [diff] [blame] | 156 | sll.sll_family = PF_PACKET; |
| 157 | sll.sll_protocol = htons (ETH_P_ALL); |
| 158 | sll.sll_ifindex = host_if_index; |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 159 | if (bind (*fd, (struct sockaddr *) &sll, sizeof (sll)) < 0) |
Chaoyu Jin | afb1930 | 2018-03-13 07:37:41 -0700 | [diff] [blame] | 160 | { |
Mohsin Kazmi | acba9f7 | 2018-05-17 15:42:27 +0200 | [diff] [blame] | 161 | vlib_log_debug (apm->log_class, |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 162 | "Failed to bind rx packet socket: %s (errno %d)", |
| 163 | strerror (errno), errno); |
Chaoyu Jin | afb1930 | 2018-03-13 07:37:41 -0700 | [diff] [blame] | 164 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 165 | goto error; |
| 166 | } |
| 167 | |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 168 | if (setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver, sizeof (ver)) < 0) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 169 | { |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 170 | vlib_log_debug ( |
| 171 | apm->log_class, |
| 172 | "Failed to set rx packet interface version: %s (errno %d)", |
| 173 | strerror (errno), errno); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 174 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 175 | goto error; |
| 176 | } |
| 177 | |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 178 | if (getsockopt (*fd, SOL_PACKET, PACKET_HDRLEN, &hdrlen, &len) < 0) |
| 179 | { |
| 180 | vlib_log_debug ( |
| 181 | apm->log_class, |
| 182 | "Failed to get packet hdr len error handling option: %s (errno %d)", |
| 183 | strerror (errno), errno); |
| 184 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 185 | goto error; |
| 186 | } |
| 187 | else |
| 188 | *hdrlen_ptr = hdrlen; |
| 189 | |
Damjan Marion | c517020 | 2017-10-11 14:15:47 +0200 | [diff] [blame] | 190 | int opt = 1; |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 191 | if (setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt, sizeof (opt)) < 0) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 192 | { |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 193 | vlib_log_debug ( |
| 194 | apm->log_class, |
| 195 | "Failed to set packet tx ring error handling option: %s (errno %d)", |
| 196 | strerror (errno), errno); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 197 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 198 | goto error; |
| 199 | } |
| 200 | |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 201 | int opt2 = 1; |
| 202 | if (setsockopt (*fd, SOL_PACKET, PACKET_VNET_HDR, &opt2, sizeof (opt2)) < 0) |
| 203 | { |
| 204 | vlib_log_debug ( |
| 205 | apm->log_class, |
| 206 | "Failed to set packet vnet hdr error handling option: %s (errno %d)", |
| 207 | strerror (errno), errno); |
| 208 | } |
| 209 | else |
| 210 | *is_cksum_gso_enabled = 1; |
| 211 | |
Florin Coras | 2dc942e | 2021-11-22 21:34:56 -0800 | [diff] [blame] | 212 | #if defined(PACKET_QDISC_BYPASS) |
| 213 | /* Introduced with Linux 3.14 so the ifdef should eventually be removed */ |
Mohammed Hawari | eed6fc9 | 2021-09-06 11:48:17 +0200 | [diff] [blame] | 214 | if (setsockopt (*fd, SOL_PACKET, PACKET_QDISC_BYPASS, &opt, sizeof (opt)) < |
| 215 | 0) |
| 216 | { |
| 217 | vlib_log_debug (apm->log_class, |
| 218 | "Failed to set qdisc bypass error " |
| 219 | "handling option: %s (errno %d)", |
| 220 | strerror (errno), errno); |
| 221 | } |
Florin Coras | 2dc942e | 2021-11-22 21:34:56 -0800 | [diff] [blame] | 222 | #endif |
Mohammed Hawari | eed6fc9 | 2021-09-06 11:48:17 +0200 | [diff] [blame] | 223 | |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 224 | if (setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz) < 0) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 225 | { |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 226 | vlib_log_debug (apm->log_class, |
| 227 | "Failed to set packet rx ring options: %s (errno %d)", |
| 228 | strerror (errno), errno); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 229 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 230 | goto error; |
| 231 | } |
| 232 | |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 233 | if (setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz) < 0) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 234 | { |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 235 | vlib_log_debug (apm->log_class, |
| 236 | "Failed to set packet tx ring options: %s (errno %d)", |
| 237 | strerror (errno), errno); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 238 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 239 | goto error; |
| 240 | } |
| 241 | |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 242 | *ring = mmap (NULL, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED, |
| 243 | *fd, 0); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 244 | if (*ring == MAP_FAILED) |
| 245 | { |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 246 | vlib_log_debug (apm->log_class, "mmap failure: %s (errno %d)", |
| 247 | strerror (errno), errno); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 248 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 249 | goto error; |
| 250 | } |
| 251 | |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 252 | return 0; |
| 253 | error: |
Dave Barach | 16ad6ae | 2016-07-28 17:55:30 -0400 | [diff] [blame] | 254 | if (*fd >= 0) |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 255 | { |
| 256 | close (*fd); |
| 257 | *fd = -1; |
| 258 | } |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 259 | return ret; |
| 260 | } |
| 261 | |
| 262 | int |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 263 | af_packet_create_if (af_packet_create_if_arg_t *arg) |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 264 | { |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 265 | af_packet_main_t *apm = &af_packet_main; |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 266 | vlib_main_t *vm = vlib_get_main (); |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 267 | int ret, fd = -1, fd2 = -1; |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 268 | tpacket_req3_t *rx_req = 0; |
| 269 | tpacket_req3_t *tx_req = 0; |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 270 | struct ifreq ifr; |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 271 | u8 *ring = 0; |
| 272 | af_packet_if_t *apif = 0; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 273 | u8 hw_addr[6]; |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 274 | vnet_sw_interface_t *sw; |
Mohsin KAZMI | cf751ec | 2017-01-18 11:59:45 +0100 | [diff] [blame] | 275 | vlib_thread_main_t *tm = vlib_get_thread_main (); |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 276 | vnet_main_t *vnm = vnet_get_main (); |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 277 | vnet_hw_if_caps_t caps = VNET_HW_IF_CAP_INT_MODE; |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 278 | uword *p; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 279 | uword if_index; |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 280 | u8 *host_if_name_dup = 0; |
Ray Kinsella | c855b73 | 2017-04-21 12:24:43 +0100 | [diff] [blame] | 281 | int host_if_index = -1; |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 282 | u32 rx_frames_per_block, tx_frames_per_block; |
| 283 | u32 rx_frame_size, tx_frame_size; |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 284 | u32 hdrlen = 0; |
| 285 | u32 i = 0; |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 286 | u8 is_cksum_gso_enabled = 0; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 287 | |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 288 | p = mhash_get (&apm->if_index_by_host_if_name, arg->host_if_name); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 289 | if (p) |
| 290 | { |
Mohsin Kazmi | 43fc688 | 2018-03-22 23:45:23 +0100 | [diff] [blame] | 291 | apif = vec_elt_at_index (apm->interfaces, p[0]); |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 292 | arg->sw_if_index = apif->sw_if_index; |
Mohsin Kazmi | 43fc688 | 2018-03-22 23:45:23 +0100 | [diff] [blame] | 293 | return VNET_API_ERROR_IF_ALREADY_EXISTS; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 294 | } |
| 295 | |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 296 | host_if_name_dup = vec_dup (arg->host_if_name); |
| 297 | |
| 298 | rx_frames_per_block = arg->rx_frames_per_block ? |
| 299 | arg->rx_frames_per_block : |
| 300 | AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK; |
| 301 | tx_frames_per_block = arg->tx_frames_per_block ? |
| 302 | arg->tx_frames_per_block : |
| 303 | AF_PACKET_DEFAULT_TX_FRAMES_PER_BLOCK; |
| 304 | rx_frame_size = |
| 305 | arg->rx_frame_size ? arg->rx_frame_size : AF_PACKET_DEFAULT_RX_FRAME_SIZE; |
| 306 | tx_frame_size = |
| 307 | arg->tx_frame_size ? arg->tx_frame_size : AF_PACKET_DEFAULT_TX_FRAME_SIZE; |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 308 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 309 | vec_validate (rx_req, 0); |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 310 | rx_req->tp_block_size = rx_frame_size * rx_frames_per_block; |
| 311 | rx_req->tp_frame_size = rx_frame_size; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 312 | rx_req->tp_block_nr = AF_PACKET_RX_BLOCK_NR; |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 313 | rx_req->tp_frame_nr = AF_PACKET_RX_BLOCK_NR * rx_frames_per_block; |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 314 | rx_req->tp_retire_blk_tov = 0; |
| 315 | rx_req->tp_feature_req_word = 0; |
| 316 | rx_req->tp_sizeof_priv = 0; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 317 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 318 | vec_validate (tx_req, 0); |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 319 | tx_req->tp_block_size = tx_frame_size * tx_frames_per_block; |
| 320 | tx_req->tp_frame_size = tx_frame_size; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 321 | tx_req->tp_block_nr = AF_PACKET_TX_BLOCK_NR; |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 322 | tx_req->tp_frame_nr = AF_PACKET_TX_BLOCK_NR * tx_frames_per_block; |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 323 | tx_req->tp_retire_blk_tov = 0; |
| 324 | tx_req->tp_sizeof_priv = 0; |
| 325 | tx_req->tp_feature_req_word = 0; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 326 | |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 327 | /* |
| 328 | * make sure host side of interface is 'UP' before binding AF_PACKET |
| 329 | * socket on it. |
| 330 | */ |
| 331 | if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0) |
Ray Kinsella | c855b73 | 2017-04-21 12:24:43 +0100 | [diff] [blame] | 332 | { |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 333 | vlib_log_debug (apm->log_class, |
| 334 | "Failed to create AF_UNIX socket: %s (errno %d)", |
| 335 | strerror (errno), errno); |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 336 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
| 337 | goto error; |
| 338 | } |
| 339 | |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 340 | clib_memcpy (ifr.ifr_name, (const char *) arg->host_if_name, |
| 341 | vec_len (arg->host_if_name)); |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 342 | if (ioctl (fd2, SIOCGIFINDEX, &ifr) < 0) |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 343 | { |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 344 | vlib_log_debug ( |
| 345 | apm->log_class, |
| 346 | "Failed to retrieve the interface (%s) index: %s (errno %d)", |
| 347 | arg->host_if_name, strerror (errno), errno); |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 348 | ret = VNET_API_ERROR_INVALID_INTERFACE; |
| 349 | goto error; |
Ray Kinsella | c855b73 | 2017-04-21 12:24:43 +0100 | [diff] [blame] | 350 | } |
| 351 | |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 352 | host_if_index = ifr.ifr_ifindex; |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 353 | if (ioctl (fd2, SIOCGIFFLAGS, &ifr) < 0) |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 354 | { |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 355 | vlib_log_debug (apm->log_class, |
| 356 | "Failed to get the active flag: %s (errno %d)", |
| 357 | strerror (errno), errno); |
| 358 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 359 | goto error; |
| 360 | } |
| 361 | |
| 362 | if (!(ifr.ifr_flags & IFF_UP)) |
| 363 | { |
| 364 | ifr.ifr_flags |= IFF_UP; |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 365 | if (ioctl (fd2, SIOCSIFFLAGS, &ifr) < 0) |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 366 | { |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 367 | vlib_log_debug (apm->log_class, |
| 368 | "Failed to set the active flag: %s (errno %d)", |
| 369 | strerror (errno), errno); |
| 370 | ret = VNET_API_ERROR_SYSCALL_ERROR_1; |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 371 | goto error; |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | if (fd2 > -1) |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 376 | { |
| 377 | close (fd2); |
| 378 | fd2 = -1; |
| 379 | } |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 380 | |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 381 | ret = create_packet_v3_sock (host_if_index, rx_req, tx_req, &fd, &ring, |
| 382 | &hdrlen, &is_cksum_gso_enabled); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 383 | |
| 384 | if (ret != 0) |
| 385 | goto error; |
| 386 | |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 387 | ret = is_bridge (arg->host_if_name); |
Ray Kinsella | c855b73 | 2017-04-21 12:24:43 +0100 | [diff] [blame] | 388 | |
| 389 | if (ret == 0) /* is a bridge, ignore state */ |
| 390 | host_if_index = -1; |
| 391 | |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 392 | /* So far everything looks good, let's create interface */ |
Damjan Marion | 048ee2e | 2016-03-16 22:59:21 +0100 | [diff] [blame] | 393 | pool_get (apm->interfaces, apif); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 394 | if_index = apif - apm->interfaces; |
| 395 | |
Ray Kinsella | c855b73 | 2017-04-21 12:24:43 +0100 | [diff] [blame] | 396 | apif->host_if_index = host_if_index; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 397 | apif->fd = fd; |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 398 | |
| 399 | vec_validate (apif->rx_ring, rx_req->tp_block_nr - 1); |
| 400 | vec_foreach_index (i, apif->rx_ring) |
| 401 | { |
| 402 | apif->rx_ring[i] = ring + i * rx_req->tp_block_size; |
| 403 | } |
| 404 | |
| 405 | ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr; |
| 406 | |
| 407 | vec_validate (apif->tx_ring, tx_req->tp_block_nr - 1); |
| 408 | vec_foreach_index (i, apif->tx_ring) |
| 409 | { |
| 410 | apif->tx_ring[i] = ring + i * tx_req->tp_block_size; |
| 411 | } |
| 412 | |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 413 | apif->rx_req = rx_req; |
| 414 | apif->tx_req = tx_req; |
Ivan Kelly | bfe737a | 2016-10-07 18:02:43 +0200 | [diff] [blame] | 415 | apif->host_if_name = host_if_name_dup; |
Dave Barach | 13f3c45 | 2016-03-29 11:56:41 -0400 | [diff] [blame] | 416 | apif->per_interface_next_index = ~0; |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 417 | apif->next_tx_frame = 0; |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 418 | apif->next_rx_block = 0; |
Mohsin Kazmi | cae84fa | 2021-10-08 15:10:49 +0000 | [diff] [blame] | 419 | apif->mode = arg->mode; |
Mohsin Kazmi | 219cbcb | 2022-03-18 16:58:31 +0000 | [diff] [blame] | 420 | apif->hdrlen = hdrlen; |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 421 | apif->is_cksum_gso_enabled = is_cksum_gso_enabled; |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 422 | |
Nathan Skrzypczak | ffc6bdc | 2021-02-01 17:13:59 +0100 | [diff] [blame] | 423 | ret = af_packet_read_mtu (apif); |
| 424 | if (ret != 0) |
| 425 | goto error; |
| 426 | |
Mohsin KAZMI | cf751ec | 2017-01-18 11:59:45 +0100 | [diff] [blame] | 427 | if (tm->n_vlib_mains > 1) |
Damjan Marion | 1927da2 | 2017-03-27 17:08:20 +0200 | [diff] [blame] | 428 | clib_spinlock_init (&apif->lockp); |
Mohsin KAZMI | cf751ec | 2017-01-18 11:59:45 +0100 | [diff] [blame] | 429 | |
Nathan Skrzypczak | b225b0a | 2021-10-26 16:11:38 +0200 | [diff] [blame] | 430 | if (apif->mode != AF_PACKET_IF_MODE_IP) |
Mohsin Kazmi | cae84fa | 2021-10-08 15:10:49 +0000 | [diff] [blame] | 431 | { |
Damjan Marion | 5c954c4 | 2022-01-06 20:36:14 +0100 | [diff] [blame] | 432 | vnet_eth_interface_registration_t eir = {}; |
Mohsin Kazmi | cae84fa | 2021-10-08 15:10:49 +0000 | [diff] [blame] | 433 | /*use configured or generate random MAC address */ |
| 434 | if (arg->hw_addr) |
| 435 | clib_memcpy (hw_addr, arg->hw_addr, 6); |
| 436 | else |
| 437 | { |
| 438 | f64 now = vlib_time_now (vm); |
| 439 | u32 rnd; |
| 440 | rnd = (u32) (now * 1e6); |
| 441 | rnd = random_u32 (&rnd); |
| 442 | |
| 443 | clib_memcpy (hw_addr + 2, &rnd, sizeof (rnd)); |
| 444 | hw_addr[0] = 2; |
| 445 | hw_addr[1] = 0xfe; |
| 446 | } |
| 447 | |
Damjan Marion | 5c954c4 | 2022-01-06 20:36:14 +0100 | [diff] [blame] | 448 | eir.dev_class_index = af_packet_device_class.index; |
| 449 | eir.dev_instance = if_index; |
| 450 | eir.address = hw_addr; |
Damjan Marion | 1cd0e5d | 2022-01-17 14:49:17 +0100 | [diff] [blame] | 451 | eir.cb.set_max_frame_size = af_packet_eth_set_max_frame_size; |
Damjan Marion | 5c954c4 | 2022-01-06 20:36:14 +0100 | [diff] [blame] | 452 | apif->hw_if_index = vnet_eth_register_interface (vnm, &eir); |
Mohsin Kazmi | cae84fa | 2021-10-08 15:10:49 +0000 | [diff] [blame] | 453 | } |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 454 | else |
| 455 | { |
Mohsin Kazmi | cae84fa | 2021-10-08 15:10:49 +0000 | [diff] [blame] | 456 | apif->hw_if_index = vnet_register_interface ( |
| 457 | vnm, af_packet_device_class.index, if_index, |
| 458 | af_packet_ip_device_hw_interface_class.index, if_index); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 459 | } |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 460 | sw = vnet_get_hw_sw_interface (vnm, apif->hw_if_index); |
| 461 | apif->sw_if_index = sw->sw_if_index; |
Mohammed Hawari | 85c1943 | 2020-12-18 16:29:45 +0100 | [diff] [blame] | 462 | vnet_hw_if_set_input_node (vnm, apif->hw_if_index, |
| 463 | af_packet_input_node.index); |
| 464 | apif->queue_index = vnet_hw_if_register_rx_queue (vnm, apif->hw_if_index, 0, |
| 465 | VNET_HW_IF_RXQ_THREAD_ANY); |
Damjan Marion | 4403690 | 2017-04-28 12:29:15 +0200 | [diff] [blame] | 466 | |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 467 | if (apif->is_cksum_gso_enabled) |
| 468 | caps |= VNET_HW_IF_CAP_TCP_GSO | VNET_HW_IF_CAP_TX_IP4_CKSUM | |
| 469 | VNET_HW_IF_CAP_TX_TCP_CKSUM | VNET_HW_IF_CAP_TX_UDP_CKSUM; |
| 470 | |
| 471 | vnet_hw_if_set_caps (vnm, apif->hw_if_index, caps); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 472 | vnet_hw_interface_set_flags (vnm, apif->hw_if_index, |
| 473 | VNET_HW_INTERFACE_FLAG_LINK_UP); |
| 474 | |
Mohammed Hawari | 85c1943 | 2020-12-18 16:29:45 +0100 | [diff] [blame] | 475 | vnet_hw_if_set_rx_queue_mode (vnm, apif->queue_index, |
| 476 | VNET_HW_IF_RX_MODE_INTERRUPT); |
| 477 | vnet_hw_if_update_runtime_data (vnm, apif->hw_if_index); |
| 478 | { |
| 479 | clib_file_t template = { 0 }; |
| 480 | template.read_function = af_packet_fd_read_ready; |
| 481 | template.file_descriptor = fd; |
| 482 | template.private_data = if_index; |
| 483 | template.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED; |
| 484 | template.description = |
| 485 | format (0, "%U", format_af_packet_device_name, if_index); |
| 486 | apif->clib_file_index = clib_file_add (&file_main, &template); |
| 487 | } |
| 488 | vnet_hw_if_set_rx_queue_file_index (vnm, apif->queue_index, |
| 489 | apif->clib_file_index); |
Damjan Marion | 4403690 | 2017-04-28 12:29:15 +0200 | [diff] [blame] | 490 | |
Ivan Kelly | bfe737a | 2016-10-07 18:02:43 +0200 | [diff] [blame] | 491 | mhash_set_mem (&apm->if_index_by_host_if_name, host_if_name_dup, &if_index, |
| 492 | 0); |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 493 | arg->sw_if_index = apif->sw_if_index; |
Mohsin KAZMI | cf751ec | 2017-01-18 11:59:45 +0100 | [diff] [blame] | 494 | |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 495 | return 0; |
| 496 | |
| 497 | error: |
Mohsin Kazmi | a50a14c | 2018-04-25 15:58:05 +0200 | [diff] [blame] | 498 | if (fd2 > -1) |
jackiechen1985 | 7fa4160 | 2019-05-07 18:59:13 +0800 | [diff] [blame] | 499 | { |
| 500 | close (fd2); |
| 501 | fd2 = -1; |
| 502 | } |
Ivan Kelly | bfe737a | 2016-10-07 18:02:43 +0200 | [diff] [blame] | 503 | vec_free (host_if_name_dup); |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 504 | vec_free (rx_req); |
| 505 | vec_free (tx_req); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 506 | return ret; |
| 507 | } |
| 508 | |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 509 | int |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 510 | af_packet_delete_if (u8 *host_if_name) |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 511 | { |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 512 | vnet_main_t *vnm = vnet_get_main (); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 513 | af_packet_main_t *apm = &af_packet_main; |
| 514 | af_packet_if_t *apif; |
| 515 | uword *p; |
| 516 | uword if_index; |
| 517 | u32 ring_sz; |
| 518 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 519 | p = mhash_get (&apm->if_index_by_host_if_name, host_if_name); |
| 520 | if (p == NULL) |
| 521 | { |
Mohsin Kazmi | acba9f7 | 2018-05-17 15:42:27 +0200 | [diff] [blame] | 522 | vlib_log_warn (apm->log_class, "Host interface %s does not exist", |
| 523 | host_if_name); |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 524 | return VNET_API_ERROR_SYSCALL_ERROR_1; |
| 525 | } |
| 526 | apif = pool_elt_at_index (apm->interfaces, p[0]); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 527 | if_index = apif - apm->interfaces; |
| 528 | |
| 529 | /* bring down the interface */ |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 530 | vnet_hw_interface_set_flags (vnm, apif->hw_if_index, 0); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 531 | |
| 532 | /* clean up */ |
Damjan Marion | 56dd543 | 2017-09-08 19:52:02 +0200 | [diff] [blame] | 533 | if (apif->clib_file_index != ~0) |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 534 | { |
Damjan Marion | 56dd543 | 2017-09-08 19:52:02 +0200 | [diff] [blame] | 535 | clib_file_del (&file_main, file_main.file_pool + apif->clib_file_index); |
| 536 | apif->clib_file_index = ~0; |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 537 | } |
Eyal Bari | f298ecf | 2016-09-19 18:47:39 +0300 | [diff] [blame] | 538 | else |
| 539 | close (apif->fd); |
| 540 | |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 541 | ring_sz = apif->rx_req->tp_block_size * apif->rx_req->tp_block_nr + |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 542 | apif->tx_req->tp_block_size * apif->tx_req->tp_block_nr; |
| 543 | if (munmap (apif->rx_ring, ring_sz)) |
Mohsin Kazmi | acba9f7 | 2018-05-17 15:42:27 +0200 | [diff] [blame] | 544 | vlib_log_warn (apm->log_class, |
| 545 | "Host interface %s could not free rx/tx ring", |
| 546 | host_if_name); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 547 | apif->rx_ring = NULL; |
| 548 | apif->tx_ring = NULL; |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 549 | apif->fd = -1; |
| 550 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 551 | vec_free (apif->rx_req); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 552 | apif->rx_req = NULL; |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 553 | vec_free (apif->tx_req); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 554 | apif->tx_req = NULL; |
| 555 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 556 | vec_free (apif->host_if_name); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 557 | apif->host_if_name = NULL; |
Ray Kinsella | c855b73 | 2017-04-21 12:24:43 +0100 | [diff] [blame] | 558 | apif->host_if_index = -1; |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 559 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 560 | mhash_unset (&apm->if_index_by_host_if_name, host_if_name, &if_index); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 561 | |
Nathan Skrzypczak | b225b0a | 2021-10-26 16:11:38 +0200 | [diff] [blame] | 562 | if (apif->mode != AF_PACKET_IF_MODE_IP) |
Mohsin Kazmi | cae84fa | 2021-10-08 15:10:49 +0000 | [diff] [blame] | 563 | ethernet_delete_interface (vnm, apif->hw_if_index); |
| 564 | else |
| 565 | vnet_delete_hw_interface (vnm, apif->hw_if_index); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 566 | |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 567 | pool_put (apm->interfaces, apif); |
Peter Lei | dba76f2 | 2016-04-08 08:16:31 -0700 | [diff] [blame] | 568 | |
| 569 | return 0; |
| 570 | } |
| 571 | |
Jakub Grajciar | 92b0275 | 2017-10-20 13:37:28 +0200 | [diff] [blame] | 572 | int |
Nathan Skrzypczak | 7d0e30b | 2021-06-23 11:28:39 +0200 | [diff] [blame] | 573 | af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set) |
Jakub Grajciar | 92b0275 | 2017-10-20 13:37:28 +0200 | [diff] [blame] | 574 | { |
Mohsin Kazmi | c1fd17b | 2022-03-22 21:40:04 +0000 | [diff] [blame] | 575 | // deprecated ... |
Jakub Grajciar | 92b0275 | 2017-10-20 13:37:28 +0200 | [diff] [blame] | 576 | return 0; |
| 577 | } |
| 578 | |
Mohsin Kazmi | 04e0bb2 | 2018-05-28 18:55:37 +0200 | [diff] [blame] | 579 | int |
| 580 | af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs) |
| 581 | { |
| 582 | af_packet_main_t *apm = &af_packet_main; |
| 583 | af_packet_if_t *apif; |
| 584 | af_packet_if_detail_t *r_af_packet_ifs = NULL; |
| 585 | af_packet_if_detail_t *af_packet_if = NULL; |
| 586 | |
Damjan Marion | b2c31b6 | 2020-12-13 21:47:40 +0100 | [diff] [blame] | 587 | pool_foreach (apif, apm->interfaces) |
| 588 | { |
Jakub Grajciar | 3b2db90 | 2019-08-26 11:25:52 +0200 | [diff] [blame] | 589 | vec_add2 (r_af_packet_ifs, af_packet_if, 1); |
| 590 | af_packet_if->sw_if_index = apif->sw_if_index; |
| 591 | if (apif->host_if_name) |
| 592 | { |
| 593 | clib_memcpy (af_packet_if->host_if_name, apif->host_if_name, |
| 594 | MIN (ARRAY_LEN (af_packet_if->host_if_name) - 1, |
| 595 | strlen ((const char *) apif->host_if_name))); |
| 596 | } |
Damjan Marion | b2c31b6 | 2020-12-13 21:47:40 +0100 | [diff] [blame] | 597 | } |
Mohsin Kazmi | 04e0bb2 | 2018-05-28 18:55:37 +0200 | [diff] [blame] | 598 | |
| 599 | *out_af_packet_ifs = r_af_packet_ifs; |
| 600 | |
| 601 | return 0; |
| 602 | } |
| 603 | |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 604 | static clib_error_t * |
| 605 | af_packet_init (vlib_main_t * vm) |
| 606 | { |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 607 | af_packet_main_t *apm = &af_packet_main; |
Damjan Marion | 553f6bd | 2016-09-07 11:54:22 +0200 | [diff] [blame] | 608 | vlib_thread_main_t *tm = vlib_get_thread_main (); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 609 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 610 | clib_memset (apm, 0, sizeof (af_packet_main_t)); |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 611 | |
| 612 | mhash_init_vec_string (&apm->if_index_by_host_if_name, sizeof (uword)); |
| 613 | |
Damjan Marion | 553f6bd | 2016-09-07 11:54:22 +0200 | [diff] [blame] | 614 | vec_validate_aligned (apm->rx_buffers, tm->n_vlib_mains - 1, |
| 615 | CLIB_CACHE_LINE_BYTES); |
| 616 | |
Mohsin Kazmi | acba9f7 | 2018-05-17 15:42:27 +0200 | [diff] [blame] | 617 | apm->log_class = vlib_log_register_class ("af_packet", 0); |
| 618 | vlib_log_debug (apm->log_class, "initialized"); |
| 619 | |
Damjan Marion | 83243a0 | 2016-02-29 13:09:30 +0100 | [diff] [blame] | 620 | return 0; |
| 621 | } |
| 622 | |
| 623 | VLIB_INIT_FUNCTION (af_packet_init); |
Damjan Marion | 00a9dca | 2016-08-17 17:05:46 +0200 | [diff] [blame] | 624 | |
| 625 | /* |
| 626 | * fd.io coding-style-patch-verification: ON |
| 627 | * |
| 628 | * Local Variables: |
| 629 | * eval: (c-set-style "gnu") |
| 630 | * End: |
| 631 | */ |