| 1 | #ifndef _LINUX_VIRTIO_NET_H |
| 2 | #define _LINUX_VIRTIO_NET_H |
| 3 | /* This header is BSD licensed so anyone can use the definitions to implement |
| 4 | * compatible drivers/servers. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. Neither the name of IBM nor the names of its contributors |
| 15 | * may be used to endorse or promote products derived from this software |
| 16 | * without specific prior written permission. |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. */ |
| 28 | #include "standard-headers/linux/types.h" |
| 29 | #include "standard-headers/linux/virtio_ids.h" |
| 30 | #include "standard-headers/linux/virtio_config.h" |
| 31 | #include "standard-headers/linux/virtio_types.h" |
| 32 | #include "standard-headers/linux/if_ether.h" |
| 33 | |
| 34 | /* The feature bitmap for virtio net */ |
| 35 | #define VIRTIO_NET_F_CSUM 0 /* Host handles pkts w/ partial csum */ |
| 36 | #define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ |
| 37 | #define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Dynamic offload configuration. */ |
| 38 | #define VIRTIO_NET_F_MTU 3 /* Initial MTU advice */ |
| 39 | #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ |
| 40 | #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ |
| 41 | #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ |
| 42 | #define VIRTIO_NET_F_GUEST_ECN 9 /* Guest can handle TSO[6] w/ ECN in. */ |
| 43 | #define VIRTIO_NET_F_GUEST_UFO 10 /* Guest can handle UFO in. */ |
| 44 | #define VIRTIO_NET_F_HOST_TSO4 11 /* Host can handle TSOv4 in. */ |
| 45 | #define VIRTIO_NET_F_HOST_TSO6 12 /* Host can handle TSOv6 in. */ |
| 46 | #define VIRTIO_NET_F_HOST_ECN 13 /* Host can handle TSO[6] w/ ECN in. */ |
| 47 | #define VIRTIO_NET_F_HOST_UFO 14 /* Host can handle UFO in. */ |
| 48 | #define VIRTIO_NET_F_MRG_RXBUF 15 /* Host can merge receive buffers. */ |
| 49 | #define VIRTIO_NET_F_STATUS 16 /* virtio_net_config.status available */ |
| 50 | #define VIRTIO_NET_F_CTRL_VQ 17 /* Control channel available */ |
| 51 | #define VIRTIO_NET_F_CTRL_RX 18 /* Control channel RX mode support */ |
| 52 | #define VIRTIO_NET_F_CTRL_VLAN 19 /* Control channel VLAN filtering */ |
| 53 | #define VIRTIO_NET_F_CTRL_RX_EXTRA 20 /* Extra RX mode control support */ |
| 54 | #define VIRTIO_NET_F_GUEST_ANNOUNCE 21 /* Guest can announce device on the |
| 55 | * network */ |
| 56 | #define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow |
| 57 | * Steering */ |
| 58 | #define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ |
| 59 | #define VIRTIO_NET_F_DEVICE_STATS 50 /* Device can provide device-level statistics. */ |
| 60 | #define VIRTIO_NET_F_VQ_NOTF_COAL 52 /* Device supports virtqueue notification coalescing */ |
| 61 | #define VIRTIO_NET_F_NOTF_COAL 53 /* Device supports notifications coalescing */ |
| 62 | #define VIRTIO_NET_F_GUEST_USO4 54 /* Guest can handle USOv4 in. */ |
| 63 | #define VIRTIO_NET_F_GUEST_USO6 55 /* Guest can handle USOv6 in. */ |
| 64 | #define VIRTIO_NET_F_HOST_USO 56 /* Host can handle USO in. */ |
| 65 | #define VIRTIO_NET_F_HASH_REPORT 57 /* Supports hash report */ |
| 66 | #define VIRTIO_NET_F_GUEST_HDRLEN 59 /* Guest provides the exact hdr_len value. */ |
| 67 | #define VIRTIO_NET_F_RSS 60 /* Supports RSS RX steering */ |
| 68 | #define VIRTIO_NET_F_RSC_EXT 61 /* extended coalescing info */ |
| 69 | #define VIRTIO_NET_F_STANDBY 62 /* Act as standby for another device |
| 70 | * with the same MAC. |
| 71 | */ |
| 72 | #define VIRTIO_NET_F_SPEED_DUPLEX 63 /* Device set linkspeed and duplex */ |
| 73 | #define VIRTIO_NET_F_GUEST_UDP_TUNNEL_GSO 65 /* Driver can receive |
| 74 | * GSO-over-UDP-tunnel packets |
| 75 | */ |
| 76 | #define VIRTIO_NET_F_GUEST_UDP_TUNNEL_GSO_CSUM 66 /* Driver handles |
| 77 | * GSO-over-UDP-tunnel |
| 78 | * packets with partial csum |
| 79 | * for the outer header |
| 80 | */ |
| 81 | #define VIRTIO_NET_F_HOST_UDP_TUNNEL_GSO 67 /* Device can receive |
| 82 | * GSO-over-UDP-tunnel packets |
| 83 | */ |
| 84 | #define VIRTIO_NET_F_HOST_UDP_TUNNEL_GSO_CSUM 68 /* Device handles |
| 85 | * GSO-over-UDP-tunnel |
| 86 | * packets with partial csum |
| 87 | * for the outer header |
| 88 | */ |
| 89 | |
| 90 | /* Offloads bits corresponding to VIRTIO_NET_F_HOST_UDP_TUNNEL_GSO{,_CSUM} |
| 91 | * features |
| 92 | */ |
| 93 | #define VIRTIO_NET_F_GUEST_UDP_TUNNEL_GSO_MAPPED 46 |
| 94 | #define VIRTIO_NET_F_GUEST_UDP_TUNNEL_GSO_CSUM_MAPPED 47 |
| 95 | |
| 96 | #ifndef VIRTIO_NET_NO_LEGACY |
| 97 | #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ |
| 98 | #endif /* VIRTIO_NET_NO_LEGACY */ |
| 99 | |
| 100 | #define VIRTIO_NET_S_LINK_UP 1 /* Link is up */ |
| 101 | #define VIRTIO_NET_S_ANNOUNCE 2 /* Announcement is needed */ |
| 102 | |
| 103 | /* supported/enabled hash types */ |
| 104 | #define VIRTIO_NET_RSS_HASH_TYPE_IPv4 (1 << 0) |
| 105 | #define VIRTIO_NET_RSS_HASH_TYPE_TCPv4 (1 << 1) |
| 106 | #define VIRTIO_NET_RSS_HASH_TYPE_UDPv4 (1 << 2) |
| 107 | #define VIRTIO_NET_RSS_HASH_TYPE_IPv6 (1 << 3) |
| 108 | #define VIRTIO_NET_RSS_HASH_TYPE_TCPv6 (1 << 4) |
| 109 | #define VIRTIO_NET_RSS_HASH_TYPE_UDPv6 (1 << 5) |
| 110 | #define VIRTIO_NET_RSS_HASH_TYPE_IP_EX (1 << 6) |
| 111 | #define VIRTIO_NET_RSS_HASH_TYPE_TCP_EX (1 << 7) |
| 112 | #define VIRTIO_NET_RSS_HASH_TYPE_UDP_EX (1 << 8) |
| 113 | |
| 114 | struct virtio_net_config { |
| 115 | /* The config defining mac address (if VIRTIO_NET_F_MAC) */ |
| 116 | uint8_t mac[ETH_ALEN]; |
| 117 | /* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */ |
| 118 | __virtio16 status; |
| 119 | /* Maximum number of each of transmit and receive queues; |
| 120 | * see VIRTIO_NET_F_MQ and VIRTIO_NET_CTRL_MQ. |
| 121 | * Legal values are between 1 and 0x8000 |
| 122 | */ |
| 123 | __virtio16 max_virtqueue_pairs; |
| 124 | /* Default maximum transmit unit advice */ |
| 125 | __virtio16 mtu; |
| 126 | /* |
| 127 | * speed, in units of 1Mb. All values 0 to INT_MAX are legal. |
| 128 | * Any other value stands for unknown. |
| 129 | */ |
| 130 | uint32_t speed; |
| 131 | /* |
| 132 | * 0x00 - half duplex |
| 133 | * 0x01 - full duplex |
| 134 | * Any other value stands for unknown. |
| 135 | */ |
| 136 | uint8_t duplex; |
| 137 | /* maximum size of RSS key */ |
| 138 | uint8_t rss_max_key_size; |
| 139 | /* maximum number of indirection table entries */ |
| 140 | uint16_t rss_max_indirection_table_length; |
| 141 | /* bitmask of supported VIRTIO_NET_RSS_HASH_ types */ |
| 142 | uint32_t supported_hash_types; |
| 143 | } QEMU_PACKED; |
| 144 | |
| 145 | /* |
| 146 | * This header comes first in the scatter-gather list. If you don't |
| 147 | * specify GSO or CSUM features, you can simply ignore the header. |
| 148 | * |
| 149 | * This is bitwise-equivalent to the legacy struct virtio_net_hdr_mrg_rxbuf, |
| 150 | * only flattened. |
| 151 | */ |
| 152 | struct virtio_net_hdr_v1 { |
| 153 | #define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csum_start, csum_offset */ |
| 154 | #define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */ |
| 155 | #define VIRTIO_NET_HDR_F_RSC_INFO 4 /* rsc info in csum_ fields */ |
| 156 | #define VIRTIO_NET_HDR_F_UDP_TUNNEL_CSUM 8 /* UDP tunnel csum offload */ |
| 157 | uint8_t flags; |
| 158 | #define VIRTIO_NET_HDR_GSO_NONE 0 /* Not a GSO frame */ |
| 159 | #define VIRTIO_NET_HDR_GSO_TCPV4 1 /* GSO frame, IPv4 TCP (TSO) */ |
| 160 | #define VIRTIO_NET_HDR_GSO_UDP 3 /* GSO frame, IPv4 UDP (UFO) */ |
| 161 | #define VIRTIO_NET_HDR_GSO_TCPV6 4 /* GSO frame, IPv6 TCP */ |
| 162 | #define VIRTIO_NET_HDR_GSO_UDP_L4 5 /* GSO frame, IPv4& IPv6 UDP (USO) */ |
| 163 | #define VIRTIO_NET_HDR_GSO_UDP_TUNNEL_IPV4 0x20 /* UDPv4 tunnel present */ |
| 164 | #define VIRTIO_NET_HDR_GSO_UDP_TUNNEL_IPV6 0x40 /* UDPv6 tunnel present */ |
| 165 | #define VIRTIO_NET_HDR_GSO_UDP_TUNNEL (VIRTIO_NET_HDR_GSO_UDP_TUNNEL_IPV4 | \ |
| 166 | VIRTIO_NET_HDR_GSO_UDP_TUNNEL_IPV6) |
| 167 | #define VIRTIO_NET_HDR_GSO_ECN 0x80 /* TCP has ECN set */ |
| 168 | uint8_t gso_type; |
| 169 | __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ |
| 170 | __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ |
| 171 | union { |
| 172 | struct { |
| 173 | __virtio16 csum_start; |
| 174 | __virtio16 csum_offset; |
| 175 | }; |
| 176 | /* Checksum calculation */ |
| 177 | struct { |
| 178 | /* Position to start checksumming from */ |
| 179 | __virtio16 start; |
| 180 | /* Offset after that to place checksum */ |
| 181 | __virtio16 offset; |
| 182 | } csum; |
| 183 | /* Receive Segment Coalescing */ |
| 184 | struct { |
| 185 | /* Number of coalesced segments */ |
| 186 | uint16_t segments; |
| 187 | /* Number of duplicated acks */ |
| 188 | uint16_t dup_acks; |
| 189 | } rsc; |
| 190 | }; |
| 191 | __virtio16 num_buffers; /* Number of merged rx buffers */ |
| 192 | }; |
| 193 | |
| 194 | struct virtio_net_hdr_v1_hash { |
| 195 | struct virtio_net_hdr_v1 hdr; |
| 196 | uint16_t hash_value_lo; |
| 197 | uint16_t hash_value_hi; |
| 198 | #define VIRTIO_NET_HASH_REPORT_NONE 0 |
| 199 | #define VIRTIO_NET_HASH_REPORT_IPv4 1 |
| 200 | #define VIRTIO_NET_HASH_REPORT_TCPv4 2 |
| 201 | #define VIRTIO_NET_HASH_REPORT_UDPv4 3 |
| 202 | #define VIRTIO_NET_HASH_REPORT_IPv6 4 |
| 203 | #define VIRTIO_NET_HASH_REPORT_TCPv6 5 |
| 204 | #define VIRTIO_NET_HASH_REPORT_UDPv6 6 |
| 205 | #define VIRTIO_NET_HASH_REPORT_IPv6_EX 7 |
| 206 | #define VIRTIO_NET_HASH_REPORT_TCPv6_EX 8 |
| 207 | #define VIRTIO_NET_HASH_REPORT_UDPv6_EX 9 |
| 208 | uint16_t hash_report; |
| 209 | uint16_t padding; |
| 210 | }; |
| 211 | |
| 212 | struct virtio_net_hdr_v1_hash_tunnel { |
| 213 | struct virtio_net_hdr_v1_hash hash_hdr; |
| 214 | uint16_t outer_th_offset; |
| 215 | uint16_t inner_nh_offset; |
| 216 | }; |
| 217 | |
| 218 | #ifndef VIRTIO_NET_NO_LEGACY |
| 219 | /* This header comes first in the scatter-gather list. |
| 220 | * For legacy virtio, if VIRTIO_F_ANY_LAYOUT is not negotiated, it must |
| 221 | * be the first element of the scatter-gather list. If you don't |
| 222 | * specify GSO or CSUM features, you can simply ignore the header. */ |
| 223 | struct virtio_net_hdr { |
| 224 | /* See VIRTIO_NET_HDR_F_* */ |
| 225 | uint8_t flags; |
| 226 | /* See VIRTIO_NET_HDR_GSO_* */ |
| 227 | uint8_t gso_type; |
| 228 | __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ |
| 229 | __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ |
| 230 | __virtio16 csum_start; /* Position to start checksumming from */ |
| 231 | __virtio16 csum_offset; /* Offset after that to place checksum */ |
| 232 | }; |
| 233 | |
| 234 | /* This is the version of the header to use when the MRG_RXBUF |
| 235 | * feature has been negotiated. */ |
| 236 | struct virtio_net_hdr_mrg_rxbuf { |
| 237 | struct virtio_net_hdr hdr; |
| 238 | __virtio16 num_buffers; /* Number of merged rx buffers */ |
| 239 | }; |
| 240 | #endif /* ...VIRTIO_NET_NO_LEGACY */ |
| 241 | |
| 242 | /* |
| 243 | * Control virtqueue data structures |
| 244 | * |
| 245 | * The control virtqueue expects a header in the first sg entry |
| 246 | * and an ack/status response in the last entry. Data for the |
| 247 | * command goes in between. |
| 248 | */ |
| 249 | struct virtio_net_ctrl_hdr { |
| 250 | uint8_t class; |
| 251 | uint8_t cmd; |
| 252 | } QEMU_PACKED; |
| 253 | |
| 254 | typedef uint8_t virtio_net_ctrl_ack; |
| 255 | |
| 256 | #define VIRTIO_NET_OK 0 |
| 257 | #define VIRTIO_NET_ERR 1 |
| 258 | |
| 259 | /* |
| 260 | * Control the RX mode, ie. promisucous, allmulti, etc... |
| 261 | * All commands require an "out" sg entry containing a 1 byte |
| 262 | * state value, zero = disable, non-zero = enable. Commands |
| 263 | * 0 and 1 are supported with the VIRTIO_NET_F_CTRL_RX feature. |
| 264 | * Commands 2-5 are added with VIRTIO_NET_F_CTRL_RX_EXTRA. |
| 265 | */ |
| 266 | #define VIRTIO_NET_CTRL_RX 0 |
| 267 | #define VIRTIO_NET_CTRL_RX_PROMISC 0 |
| 268 | #define VIRTIO_NET_CTRL_RX_ALLMULTI 1 |
| 269 | #define VIRTIO_NET_CTRL_RX_ALLUNI 2 |
| 270 | #define VIRTIO_NET_CTRL_RX_NOMULTI 3 |
| 271 | #define VIRTIO_NET_CTRL_RX_NOUNI 4 |
| 272 | #define VIRTIO_NET_CTRL_RX_NOBCAST 5 |
| 273 | |
| 274 | /* |
| 275 | * Control the MAC |
| 276 | * |
| 277 | * The MAC filter table is managed by the hypervisor, the guest should |
| 278 | * assume the size is infinite. Filtering should be considered |
| 279 | * non-perfect, ie. based on hypervisor resources, the guest may |
| 280 | * received packets from sources not specified in the filter list. |
| 281 | * |
| 282 | * In addition to the class/cmd header, the TABLE_SET command requires |
| 283 | * two out scatterlists. Each contains a 4 byte count of entries followed |
| 284 | * by a concatenated byte stream of the ETH_ALEN MAC addresses. The |
| 285 | * first sg list contains unicast addresses, the second is for multicast. |
| 286 | * This functionality is present if the VIRTIO_NET_F_CTRL_RX feature |
| 287 | * is available. |
| 288 | * |
| 289 | * The ADDR_SET command requests one out scatterlist, it contains a |
| 290 | * 6 bytes MAC address. This functionality is present if the |
| 291 | * VIRTIO_NET_F_CTRL_MAC_ADDR feature is available. |
| 292 | */ |
| 293 | struct virtio_net_ctrl_mac { |
| 294 | __virtio32 entries; |
| 295 | uint8_t macs[][ETH_ALEN]; |
| 296 | } QEMU_PACKED; |
| 297 | |
| 298 | #define VIRTIO_NET_CTRL_MAC 1 |
| 299 | #define VIRTIO_NET_CTRL_MAC_TABLE_SET 0 |
| 300 | #define VIRTIO_NET_CTRL_MAC_ADDR_SET 1 |
| 301 | |
| 302 | /* |
| 303 | * Control VLAN filtering |
| 304 | * |
| 305 | * The VLAN filter table is controlled via a simple ADD/DEL interface. |
| 306 | * VLAN IDs not added may be filterd by the hypervisor. Del is the |
| 307 | * opposite of add. Both commands expect an out entry containing a 2 |
| 308 | * byte VLAN ID. VLAN filterting is available with the |
| 309 | * VIRTIO_NET_F_CTRL_VLAN feature bit. |
| 310 | */ |
| 311 | #define VIRTIO_NET_CTRL_VLAN 2 |
| 312 | #define VIRTIO_NET_CTRL_VLAN_ADD 0 |
| 313 | #define VIRTIO_NET_CTRL_VLAN_DEL 1 |
| 314 | |
| 315 | /* |
| 316 | * Control link announce acknowledgement |
| 317 | * |
| 318 | * The command VIRTIO_NET_CTRL_ANNOUNCE_ACK is used to indicate that |
| 319 | * driver has recevied the notification; device would clear the |
| 320 | * VIRTIO_NET_S_ANNOUNCE bit in the status field after it receives |
| 321 | * this command. |
| 322 | */ |
| 323 | #define VIRTIO_NET_CTRL_ANNOUNCE 3 |
| 324 | #define VIRTIO_NET_CTRL_ANNOUNCE_ACK 0 |
| 325 | |
| 326 | /* |
| 327 | * Control Receive Flow Steering |
| 328 | */ |
| 329 | #define VIRTIO_NET_CTRL_MQ 4 |
| 330 | /* |
| 331 | * The command VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET |
| 332 | * enables Receive Flow Steering, specifying the number of the transmit and |
| 333 | * receive queues that will be used. After the command is consumed and acked by |
| 334 | * the device, the device will not steer new packets on receive virtqueues |
| 335 | * other than specified nor read from transmit virtqueues other than specified. |
| 336 | * Accordingly, driver should not transmit new packets on virtqueues other than |
| 337 | * specified. |
| 338 | */ |
| 339 | struct virtio_net_ctrl_mq { |
| 340 | __virtio16 virtqueue_pairs; |
| 341 | }; |
| 342 | |
| 343 | #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET 0 |
| 344 | #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 |
| 345 | #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 |
| 346 | |
| 347 | /* |
| 348 | * The command VIRTIO_NET_CTRL_MQ_RSS_CONFIG has the same effect as |
| 349 | * VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET does and additionally configures |
| 350 | * the receive steering to use a hash calculated for incoming packet |
| 351 | * to decide on receive virtqueue to place the packet. The command |
| 352 | * also provides parameters to calculate a hash and receive virtqueue. |
| 353 | */ |
| 354 | struct virtio_net_rss_config { |
| 355 | uint32_t hash_types; |
| 356 | uint16_t indirection_table_mask; |
| 357 | uint16_t unclassified_queue; |
| 358 | uint16_t indirection_table[1/* + indirection_table_mask */]; |
| 359 | uint16_t max_tx_vq; |
| 360 | uint8_t hash_key_length; |
| 361 | uint8_t hash_key_data[/* hash_key_length */]; |
| 362 | }; |
| 363 | |
| 364 | struct virtio_net_rss_config_hdr { |
| 365 | uint32_t hash_types; |
| 366 | uint16_t indirection_table_mask; |
| 367 | uint16_t unclassified_queue; |
| 368 | uint16_t indirection_table[/* 1 + indirection_table_mask */]; |
| 369 | }; |
| 370 | |
| 371 | struct virtio_net_rss_config_trailer { |
| 372 | uint16_t max_tx_vq; |
| 373 | uint8_t hash_key_length; |
| 374 | uint8_t hash_key_data[/* hash_key_length */]; |
| 375 | }; |
| 376 | |
| 377 | #define VIRTIO_NET_CTRL_MQ_RSS_CONFIG 1 |
| 378 | |
| 379 | /* |
| 380 | * The command VIRTIO_NET_CTRL_MQ_HASH_CONFIG requests the device |
| 381 | * to include in the virtio header of the packet the value of the |
| 382 | * calculated hash and the report type of hash. It also provides |
| 383 | * parameters for hash calculation. The command requires feature |
| 384 | * VIRTIO_NET_F_HASH_REPORT to be negotiated to extend the |
| 385 | * layout of virtio header as defined in virtio_net_hdr_v1_hash. |
| 386 | */ |
| 387 | struct virtio_net_hash_config { |
| 388 | uint32_t hash_types; |
| 389 | /* for compatibility with virtio_net_rss_config */ |
| 390 | uint16_t reserved[4]; |
| 391 | uint8_t hash_key_length; |
| 392 | uint8_t hash_key_data[/* hash_key_length */]; |
| 393 | }; |
| 394 | |
| 395 | #define VIRTIO_NET_CTRL_MQ_HASH_CONFIG 2 |
| 396 | |
| 397 | /* |
| 398 | * Control network offloads |
| 399 | * |
| 400 | * Reconfigures the network offloads that Guest can handle. |
| 401 | * |
| 402 | * Available with the VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature bit. |
| 403 | * |
| 404 | * Command data format matches the feature bit mask exactly. |
| 405 | * |
| 406 | * See VIRTIO_NET_F_GUEST_* for the list of offloads |
| 407 | * that can be enabled/disabled. |
| 408 | */ |
| 409 | #define VIRTIO_NET_CTRL_GUEST_OFFLOADS 5 |
| 410 | #define VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET 0 |
| 411 | |
| 412 | /* |
| 413 | * Control notifications coalescing. |
| 414 | * |
| 415 | * Request the device to change the notifications coalescing parameters. |
| 416 | * |
| 417 | * Available with the VIRTIO_NET_F_NOTF_COAL feature bit. |
| 418 | */ |
| 419 | #define VIRTIO_NET_CTRL_NOTF_COAL 6 |
| 420 | /* |
| 421 | * Set the tx-usecs/tx-max-packets parameters. |
| 422 | */ |
| 423 | struct virtio_net_ctrl_coal_tx { |
| 424 | /* Maximum number of packets to send before a TX notification */ |
| 425 | uint32_t tx_max_packets; |
| 426 | /* Maximum number of usecs to delay a TX notification */ |
| 427 | uint32_t tx_usecs; |
| 428 | }; |
| 429 | |
| 430 | #define VIRTIO_NET_CTRL_NOTF_COAL_TX_SET 0 |
| 431 | |
| 432 | /* |
| 433 | * Set the rx-usecs/rx-max-packets parameters. |
| 434 | */ |
| 435 | struct virtio_net_ctrl_coal_rx { |
| 436 | /* Maximum number of packets to receive before a RX notification */ |
| 437 | uint32_t rx_max_packets; |
| 438 | /* Maximum number of usecs to delay a RX notification */ |
| 439 | uint32_t rx_usecs; |
| 440 | }; |
| 441 | |
| 442 | #define VIRTIO_NET_CTRL_NOTF_COAL_RX_SET 1 |
| 443 | #define VIRTIO_NET_CTRL_NOTF_COAL_VQ_SET 2 |
| 444 | #define VIRTIO_NET_CTRL_NOTF_COAL_VQ_GET 3 |
| 445 | |
| 446 | struct virtio_net_ctrl_coal { |
| 447 | uint32_t max_packets; |
| 448 | uint32_t max_usecs; |
| 449 | }; |
| 450 | |
| 451 | struct virtio_net_ctrl_coal_vq { |
| 452 | uint16_t vqn; |
| 453 | uint16_t reserved; |
| 454 | struct virtio_net_ctrl_coal coal; |
| 455 | }; |
| 456 | |
| 457 | /* |
| 458 | * Device Statistics |
| 459 | */ |
| 460 | #define VIRTIO_NET_CTRL_STATS 8 |
| 461 | #define VIRTIO_NET_CTRL_STATS_QUERY 0 |
| 462 | #define VIRTIO_NET_CTRL_STATS_GET 1 |
| 463 | |
| 464 | struct virtio_net_stats_capabilities { |
| 465 | |
| 466 | #define VIRTIO_NET_STATS_TYPE_CVQ (1ULL << 32) |
| 467 | |
| 468 | #define VIRTIO_NET_STATS_TYPE_RX_BASIC (1ULL << 0) |
| 469 | #define VIRTIO_NET_STATS_TYPE_RX_CSUM (1ULL << 1) |
| 470 | #define VIRTIO_NET_STATS_TYPE_RX_GSO (1ULL << 2) |
| 471 | #define VIRTIO_NET_STATS_TYPE_RX_SPEED (1ULL << 3) |
| 472 | |
| 473 | #define VIRTIO_NET_STATS_TYPE_TX_BASIC (1ULL << 16) |
| 474 | #define VIRTIO_NET_STATS_TYPE_TX_CSUM (1ULL << 17) |
| 475 | #define VIRTIO_NET_STATS_TYPE_TX_GSO (1ULL << 18) |
| 476 | #define VIRTIO_NET_STATS_TYPE_TX_SPEED (1ULL << 19) |
| 477 | |
| 478 | uint64_t supported_stats_types[1]; |
| 479 | }; |
| 480 | |
| 481 | struct virtio_net_ctrl_queue_stats { |
| 482 | struct { |
| 483 | uint16_t vq_index; |
| 484 | uint16_t reserved[3]; |
| 485 | uint64_t types_bitmap[1]; |
| 486 | } stats[1]; |
| 487 | }; |
| 488 | |
| 489 | struct virtio_net_stats_reply_hdr { |
| 490 | #define VIRTIO_NET_STATS_TYPE_REPLY_CVQ 32 |
| 491 | |
| 492 | #define VIRTIO_NET_STATS_TYPE_REPLY_RX_BASIC 0 |
| 493 | #define VIRTIO_NET_STATS_TYPE_REPLY_RX_CSUM 1 |
| 494 | #define VIRTIO_NET_STATS_TYPE_REPLY_RX_GSO 2 |
| 495 | #define VIRTIO_NET_STATS_TYPE_REPLY_RX_SPEED 3 |
| 496 | |
| 497 | #define VIRTIO_NET_STATS_TYPE_REPLY_TX_BASIC 16 |
| 498 | #define VIRTIO_NET_STATS_TYPE_REPLY_TX_CSUM 17 |
| 499 | #define VIRTIO_NET_STATS_TYPE_REPLY_TX_GSO 18 |
| 500 | #define VIRTIO_NET_STATS_TYPE_REPLY_TX_SPEED 19 |
| 501 | uint8_t type; |
| 502 | uint8_t reserved; |
| 503 | uint16_t vq_index; |
| 504 | uint16_t reserved1; |
| 505 | uint16_t size; |
| 506 | }; |
| 507 | |
| 508 | struct virtio_net_stats_cvq { |
| 509 | struct virtio_net_stats_reply_hdr hdr; |
| 510 | |
| 511 | uint64_t command_num; |
| 512 | uint64_t ok_num; |
| 513 | }; |
| 514 | |
| 515 | struct virtio_net_stats_rx_basic { |
| 516 | struct virtio_net_stats_reply_hdr hdr; |
| 517 | |
| 518 | uint64_t rx_notifications; |
| 519 | |
| 520 | uint64_t rx_packets; |
| 521 | uint64_t rx_bytes; |
| 522 | |
| 523 | uint64_t rx_interrupts; |
| 524 | |
| 525 | uint64_t rx_drops; |
| 526 | uint64_t rx_drop_overruns; |
| 527 | }; |
| 528 | |
| 529 | struct virtio_net_stats_tx_basic { |
| 530 | struct virtio_net_stats_reply_hdr hdr; |
| 531 | |
| 532 | uint64_t tx_notifications; |
| 533 | |
| 534 | uint64_t tx_packets; |
| 535 | uint64_t tx_bytes; |
| 536 | |
| 537 | uint64_t tx_interrupts; |
| 538 | |
| 539 | uint64_t tx_drops; |
| 540 | uint64_t tx_drop_malformed; |
| 541 | }; |
| 542 | |
| 543 | struct virtio_net_stats_rx_csum { |
| 544 | struct virtio_net_stats_reply_hdr hdr; |
| 545 | |
| 546 | uint64_t rx_csum_valid; |
| 547 | uint64_t rx_needs_csum; |
| 548 | uint64_t rx_csum_none; |
| 549 | uint64_t rx_csum_bad; |
| 550 | }; |
| 551 | |
| 552 | struct virtio_net_stats_tx_csum { |
| 553 | struct virtio_net_stats_reply_hdr hdr; |
| 554 | |
| 555 | uint64_t tx_csum_none; |
| 556 | uint64_t tx_needs_csum; |
| 557 | }; |
| 558 | |
| 559 | struct virtio_net_stats_rx_gso { |
| 560 | struct virtio_net_stats_reply_hdr hdr; |
| 561 | |
| 562 | uint64_t rx_gso_packets; |
| 563 | uint64_t rx_gso_bytes; |
| 564 | uint64_t rx_gso_packets_coalesced; |
| 565 | uint64_t rx_gso_bytes_coalesced; |
| 566 | }; |
| 567 | |
| 568 | struct virtio_net_stats_tx_gso { |
| 569 | struct virtio_net_stats_reply_hdr hdr; |
| 570 | |
| 571 | uint64_t tx_gso_packets; |
| 572 | uint64_t tx_gso_bytes; |
| 573 | uint64_t tx_gso_segments; |
| 574 | uint64_t tx_gso_segments_bytes; |
| 575 | uint64_t tx_gso_packets_noseg; |
| 576 | uint64_t tx_gso_bytes_noseg; |
| 577 | }; |
| 578 | |
| 579 | struct virtio_net_stats_rx_speed { |
| 580 | struct virtio_net_stats_reply_hdr hdr; |
| 581 | |
| 582 | /* rx_{packets,bytes}_allowance_exceeded are too long. So rename to |
| 583 | * short name. |
| 584 | */ |
| 585 | uint64_t rx_ratelimit_packets; |
| 586 | uint64_t rx_ratelimit_bytes; |
| 587 | }; |
| 588 | |
| 589 | struct virtio_net_stats_tx_speed { |
| 590 | struct virtio_net_stats_reply_hdr hdr; |
| 591 | |
| 592 | /* tx_{packets,bytes}_allowance_exceeded are too long. So rename to |
| 593 | * short name. |
| 594 | */ |
| 595 | uint64_t tx_ratelimit_packets; |
| 596 | uint64_t tx_ratelimit_bytes; |
| 597 | }; |
| 598 | |
| 599 | #endif /* _LINUX_VIRTIO_NET_H */ |