1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4 #ifndef _IAVF_H_ 5 #define _IAVF_H_ 6 7 #include <linux/module.h> 8 #include <linux/pci.h> 9 #include <linux/aer.h> 10 #include <linux/netdevice.h> 11 #include <linux/vmalloc.h> 12 #include <linux/interrupt.h> 13 #include <linux/ethtool.h> 14 #include <linux/if_vlan.h> 15 #include <linux/ip.h> 16 #include <linux/tcp.h> 17 #include <linux/sctp.h> 18 #include <linux/ipv6.h> 19 #include <linux/kernel.h> 20 #include <linux/bitops.h> 21 #include <linux/timer.h> 22 #include <linux/workqueue.h> 23 #include <linux/wait.h> 24 #include <linux/delay.h> 25 #include <linux/gfp.h> 26 #include <linux/skbuff.h> 27 #include <linux/dma-mapping.h> 28 #include <linux/etherdevice.h> 29 #include <linux/socket.h> 30 #include <linux/jiffies.h> 31 #include <net/ip6_checksum.h> 32 #include <net/pkt_cls.h> 33 #include <net/udp.h> 34 #include <net/tc_act/tc_gact.h> 35 #include <net/tc_act/tc_mirred.h> 36 37 #include "iavf_type.h" 38 #include <linux/avf/virtchnl.h> 39 #include "iavf_txrx.h" 40 #include "iavf_fdir.h" 41 #include "iavf_adv_rss.h" 42 43 #define DEFAULT_DEBUG_LEVEL_SHIFT 3 44 #define PFX "iavf: " 45 46 /* VSI state flags shared with common code */ 47 enum iavf_vsi_state_t { 48 __IAVF_VSI_DOWN, 49 /* This must be last as it determines the size of the BITMAP */ 50 __IAVF_VSI_STATE_SIZE__, 51 }; 52 53 /* dummy struct to make common code less painful */ 54 struct iavf_vsi { 55 struct iavf_adapter *back; 56 struct net_device *netdev; 57 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 58 u16 seid; 59 u16 id; 60 DECLARE_BITMAP(state, __IAVF_VSI_STATE_SIZE__); 61 int base_vector; 62 u16 work_limit; 63 u16 qs_handle; 64 void *priv; /* client driver data reference. */ 65 }; 66 67 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 68 #define IAVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 69 #define IAVF_DEFAULT_TXD 512 70 #define IAVF_DEFAULT_RXD 512 71 #define IAVF_MAX_TXD 4096 72 #define IAVF_MIN_TXD 64 73 #define IAVF_MAX_RXD 4096 74 #define IAVF_MIN_RXD 64 75 #define IAVF_REQ_DESCRIPTOR_MULTIPLE 32 76 #define IAVF_MAX_AQ_BUF_SIZE 4096 77 #define IAVF_AQ_LEN 32 78 #define IAVF_AQ_MAX_ERR 20 /* times to try before resetting AQ */ 79 80 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) 81 82 #define IAVF_RX_DESC(R, i) (&(((union iavf_32byte_rx_desc *)((R)->desc))[i])) 83 #define IAVF_TX_DESC(R, i) (&(((struct iavf_tx_desc *)((R)->desc))[i])) 84 #define IAVF_TX_CTXTDESC(R, i) \ 85 (&(((struct iavf_tx_context_desc *)((R)->desc))[i])) 86 #define IAVF_MAX_REQ_QUEUES 16 87 88 #define IAVF_HKEY_ARRAY_SIZE ((IAVF_VFQF_HKEY_MAX_INDEX + 1) * 4) 89 #define IAVF_HLUT_ARRAY_SIZE ((IAVF_VFQF_HLUT_MAX_INDEX + 1) * 4) 90 #define IAVF_MBPS_DIVISOR 125000 /* divisor to convert to Mbps */ 91 92 #define IAVF_VIRTCHNL_VF_RESOURCE_SIZE (sizeof(struct virtchnl_vf_resource) + \ 93 (IAVF_MAX_VF_VSI * \ 94 sizeof(struct virtchnl_vsi_resource))) 95 96 /* MAX_MSIX_Q_VECTORS of these are allocated, 97 * but we only use one per queue-specific vector. 98 */ 99 struct iavf_q_vector { 100 struct iavf_adapter *adapter; 101 struct iavf_vsi *vsi; 102 struct napi_struct napi; 103 struct iavf_ring_container rx; 104 struct iavf_ring_container tx; 105 u32 ring_mask; 106 u8 itr_countdown; /* when 0 should adjust adaptive ITR */ 107 u8 num_ringpairs; /* total number of ring pairs in vector */ 108 u16 v_idx; /* index in the vsi->q_vector array. */ 109 u16 reg_idx; /* register index of the interrupt */ 110 char name[IFNAMSIZ + 15]; 111 bool arm_wb_state; 112 cpumask_t affinity_mask; 113 struct irq_affinity_notify affinity_notify; 114 }; 115 116 /* Helper macros to switch between ints/sec and what the register uses. 117 * And yes, it's the same math going both ways. The lowest value 118 * supported by all of the iavf hardware is 8. 119 */ 120 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \ 121 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8) 122 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG 123 124 #define IAVF_DESC_UNUSED(R) \ 125 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ 126 (R)->next_to_clean - (R)->next_to_use - 1) 127 128 #define OTHER_VECTOR 1 129 #define NONQ_VECS (OTHER_VECTOR) 130 131 #define MIN_MSIX_Q_VECTORS 1 132 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS) 133 134 #define IAVF_QUEUE_END_OF_LIST 0x7FF 135 #define IAVF_FREE_VECTOR 0x7FFF 136 struct iavf_mac_filter { 137 struct list_head list; 138 u8 macaddr[ETH_ALEN]; 139 bool remove; /* filter needs to be removed */ 140 bool add; /* filter needs to be added */ 141 }; 142 143 struct iavf_vlan_filter { 144 struct list_head list; 145 u16 vlan; 146 bool remove; /* filter needs to be removed */ 147 bool add; /* filter needs to be added */ 148 }; 149 150 #define IAVF_MAX_TRAFFIC_CLASS 4 151 /* State of traffic class creation */ 152 enum iavf_tc_state_t { 153 __IAVF_TC_INVALID, /* no traffic class, default state */ 154 __IAVF_TC_RUNNING, /* traffic classes have been created */ 155 }; 156 157 /* channel info */ 158 struct iavf_channel_config { 159 struct virtchnl_channel_info ch_info[IAVF_MAX_TRAFFIC_CLASS]; 160 enum iavf_tc_state_t state; 161 u8 total_qps; 162 }; 163 164 /* State of cloud filter */ 165 enum iavf_cloud_filter_state_t { 166 __IAVF_CF_INVALID, /* cloud filter not added */ 167 __IAVF_CF_ADD_PENDING, /* cloud filter pending add by the PF */ 168 __IAVF_CF_DEL_PENDING, /* cloud filter pending del by the PF */ 169 __IAVF_CF_ACTIVE, /* cloud filter is active */ 170 }; 171 172 /* Driver state. The order of these is important! */ 173 enum iavf_state_t { 174 __IAVF_STARTUP, /* driver loaded, probe complete */ 175 __IAVF_REMOVE, /* driver is being unloaded */ 176 __IAVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */ 177 __IAVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */ 178 __IAVF_INIT_SW, /* got resources, setting up structs */ 179 __IAVF_RESETTING, /* in reset */ 180 __IAVF_COMM_FAILED, /* communication with PF failed */ 181 /* Below here, watchdog is running */ 182 __IAVF_DOWN, /* ready, can be opened */ 183 __IAVF_DOWN_PENDING, /* descending, waiting for watchdog */ 184 __IAVF_TESTING, /* in ethtool self-test */ 185 __IAVF_RUNNING, /* opened, working */ 186 }; 187 188 enum iavf_critical_section_t { 189 __IAVF_IN_CRITICAL_TASK, /* cannot be interrupted */ 190 __IAVF_IN_CLIENT_TASK, 191 __IAVF_IN_REMOVE_TASK, /* device being removed */ 192 }; 193 194 #define IAVF_CLOUD_FIELD_OMAC 0x01 195 #define IAVF_CLOUD_FIELD_IMAC 0x02 196 #define IAVF_CLOUD_FIELD_IVLAN 0x04 197 #define IAVF_CLOUD_FIELD_TEN_ID 0x08 198 #define IAVF_CLOUD_FIELD_IIP 0x10 199 200 #define IAVF_CF_FLAGS_OMAC IAVF_CLOUD_FIELD_OMAC 201 #define IAVF_CF_FLAGS_IMAC IAVF_CLOUD_FIELD_IMAC 202 #define IAVF_CF_FLAGS_IMAC_IVLAN (IAVF_CLOUD_FIELD_IMAC |\ 203 IAVF_CLOUD_FIELD_IVLAN) 204 #define IAVF_CF_FLAGS_IMAC_TEN_ID (IAVF_CLOUD_FIELD_IMAC |\ 205 IAVF_CLOUD_FIELD_TEN_ID) 206 #define IAVF_CF_FLAGS_OMAC_TEN_ID_IMAC (IAVF_CLOUD_FIELD_OMAC |\ 207 IAVF_CLOUD_FIELD_IMAC |\ 208 IAVF_CLOUD_FIELD_TEN_ID) 209 #define IAVF_CF_FLAGS_IMAC_IVLAN_TEN_ID (IAVF_CLOUD_FIELD_IMAC |\ 210 IAVF_CLOUD_FIELD_IVLAN |\ 211 IAVF_CLOUD_FIELD_TEN_ID) 212 #define IAVF_CF_FLAGS_IIP IAVF_CLOUD_FIELD_IIP 213 214 /* bookkeeping of cloud filters */ 215 struct iavf_cloud_filter { 216 enum iavf_cloud_filter_state_t state; 217 struct list_head list; 218 struct virtchnl_filter f; 219 unsigned long cookie; 220 bool del; /* filter needs to be deleted */ 221 bool add; /* filter needs to be added */ 222 }; 223 224 #define IAVF_RESET_WAIT_MS 10 225 #define IAVF_RESET_WAIT_DETECTED_COUNT 500 226 #define IAVF_RESET_WAIT_COMPLETE_COUNT 2000 227 228 /* board specific private data structure */ 229 struct iavf_adapter { 230 struct work_struct reset_task; 231 struct work_struct adminq_task; 232 struct delayed_work client_task; 233 struct delayed_work init_task; 234 wait_queue_head_t down_waitqueue; 235 struct iavf_q_vector *q_vectors; 236 struct list_head vlan_filter_list; 237 struct list_head mac_filter_list; 238 /* Lock to protect accesses to MAC and VLAN lists */ 239 spinlock_t mac_vlan_list_lock; 240 char misc_vector_name[IFNAMSIZ + 9]; 241 int num_active_queues; 242 int num_req_queues; 243 244 /* TX */ 245 struct iavf_ring *tx_rings; 246 u32 tx_timeout_count; 247 u32 tx_desc_count; 248 249 /* RX */ 250 struct iavf_ring *rx_rings; 251 u64 hw_csum_rx_error; 252 u32 rx_desc_count; 253 int num_msix_vectors; 254 int num_iwarp_msix; 255 int iwarp_base_vector; 256 u32 client_pending; 257 struct iavf_client_instance *cinst; 258 struct msix_entry *msix_entries; 259 260 u32 flags; 261 #define IAVF_FLAG_RX_CSUM_ENABLED BIT(0) 262 #define IAVF_FLAG_PF_COMMS_FAILED BIT(3) 263 #define IAVF_FLAG_RESET_PENDING BIT(4) 264 #define IAVF_FLAG_RESET_NEEDED BIT(5) 265 #define IAVF_FLAG_WB_ON_ITR_CAPABLE BIT(6) 266 #define IAVF_FLAG_SERVICE_CLIENT_REQUESTED BIT(9) 267 #define IAVF_FLAG_CLIENT_NEEDS_OPEN BIT(10) 268 #define IAVF_FLAG_CLIENT_NEEDS_CLOSE BIT(11) 269 #define IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS BIT(12) 270 #define IAVF_FLAG_PROMISC_ON BIT(13) 271 #define IAVF_FLAG_ALLMULTI_ON BIT(14) 272 #define IAVF_FLAG_LEGACY_RX BIT(15) 273 #define IAVF_FLAG_REINIT_ITR_NEEDED BIT(16) 274 #define IAVF_FLAG_QUEUES_DISABLED BIT(17) 275 /* duplicates for common code */ 276 #define IAVF_FLAG_DCB_ENABLED 0 277 /* flags for admin queue service task */ 278 u32 aq_required; 279 #define IAVF_FLAG_AQ_ENABLE_QUEUES BIT(0) 280 #define IAVF_FLAG_AQ_DISABLE_QUEUES BIT(1) 281 #define IAVF_FLAG_AQ_ADD_MAC_FILTER BIT(2) 282 #define IAVF_FLAG_AQ_ADD_VLAN_FILTER BIT(3) 283 #define IAVF_FLAG_AQ_DEL_MAC_FILTER BIT(4) 284 #define IAVF_FLAG_AQ_DEL_VLAN_FILTER BIT(5) 285 #define IAVF_FLAG_AQ_CONFIGURE_QUEUES BIT(6) 286 #define IAVF_FLAG_AQ_MAP_VECTORS BIT(7) 287 #define IAVF_FLAG_AQ_HANDLE_RESET BIT(8) 288 #define IAVF_FLAG_AQ_CONFIGURE_RSS BIT(9) /* direct AQ config */ 289 #define IAVF_FLAG_AQ_GET_CONFIG BIT(10) 290 /* Newer style, RSS done by the PF so we can ignore hardware vagaries. */ 291 #define IAVF_FLAG_AQ_GET_HENA BIT(11) 292 #define IAVF_FLAG_AQ_SET_HENA BIT(12) 293 #define IAVF_FLAG_AQ_SET_RSS_KEY BIT(13) 294 #define IAVF_FLAG_AQ_SET_RSS_LUT BIT(14) 295 #define IAVF_FLAG_AQ_REQUEST_PROMISC BIT(15) 296 #define IAVF_FLAG_AQ_RELEASE_PROMISC BIT(16) 297 #define IAVF_FLAG_AQ_REQUEST_ALLMULTI BIT(17) 298 #define IAVF_FLAG_AQ_RELEASE_ALLMULTI BIT(18) 299 #define IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING BIT(19) 300 #define IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING BIT(20) 301 #define IAVF_FLAG_AQ_ENABLE_CHANNELS BIT(21) 302 #define IAVF_FLAG_AQ_DISABLE_CHANNELS BIT(22) 303 #define IAVF_FLAG_AQ_ADD_CLOUD_FILTER BIT(23) 304 #define IAVF_FLAG_AQ_DEL_CLOUD_FILTER BIT(24) 305 #define IAVF_FLAG_AQ_ADD_FDIR_FILTER BIT(25) 306 #define IAVF_FLAG_AQ_DEL_FDIR_FILTER BIT(26) 307 #define IAVF_FLAG_AQ_ADD_ADV_RSS_CFG BIT(27) 308 #define IAVF_FLAG_AQ_DEL_ADV_RSS_CFG BIT(28) 309 310 /* OS defined structs */ 311 struct net_device *netdev; 312 struct pci_dev *pdev; 313 314 struct iavf_hw hw; /* defined in iavf_type.h */ 315 316 enum iavf_state_t state; 317 unsigned long crit_section; 318 319 struct delayed_work watchdog_task; 320 bool netdev_registered; 321 bool link_up; 322 enum virtchnl_link_speed link_speed; 323 /* This is only populated if the VIRTCHNL_VF_CAP_ADV_LINK_SPEED is set 324 * in vf_res->vf_cap_flags. Use ADV_LINK_SUPPORT macro to determine if 325 * this field is valid. This field should be used going forward and the 326 * enum virtchnl_link_speed above should be considered the legacy way of 327 * storing/communicating link speeds. 328 */ 329 u32 link_speed_mbps; 330 331 enum virtchnl_ops current_op; 332 #define CLIENT_ALLOWED(_a) ((_a)->vf_res ? \ 333 (_a)->vf_res->vf_cap_flags & \ 334 VIRTCHNL_VF_OFFLOAD_IWARP : \ 335 0) 336 #define CLIENT_ENABLED(_a) ((_a)->cinst) 337 /* RSS by the PF should be preferred over RSS via other methods. */ 338 #define RSS_PF(_a) ((_a)->vf_res->vf_cap_flags & \ 339 VIRTCHNL_VF_OFFLOAD_RSS_PF) 340 #define RSS_AQ(_a) ((_a)->vf_res->vf_cap_flags & \ 341 VIRTCHNL_VF_OFFLOAD_RSS_AQ) 342 #define RSS_REG(_a) (!((_a)->vf_res->vf_cap_flags & \ 343 (VIRTCHNL_VF_OFFLOAD_RSS_AQ | \ 344 VIRTCHNL_VF_OFFLOAD_RSS_PF))) 345 #define VLAN_ALLOWED(_a) ((_a)->vf_res->vf_cap_flags & \ 346 VIRTCHNL_VF_OFFLOAD_VLAN) 347 #define ADV_LINK_SUPPORT(_a) ((_a)->vf_res->vf_cap_flags & \ 348 VIRTCHNL_VF_CAP_ADV_LINK_SPEED) 349 #define FDIR_FLTR_SUPPORT(_a) ((_a)->vf_res->vf_cap_flags & \ 350 VIRTCHNL_VF_OFFLOAD_FDIR_PF) 351 #define ADV_RSS_SUPPORT(_a) ((_a)->vf_res->vf_cap_flags & \ 352 VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF) 353 struct virtchnl_vf_resource *vf_res; /* incl. all VSIs */ 354 struct virtchnl_vsi_resource *vsi_res; /* our LAN VSI */ 355 struct virtchnl_version_info pf_version; 356 #define PF_IS_V11(_a) (((_a)->pf_version.major == 1) && \ 357 ((_a)->pf_version.minor == 1)) 358 u16 msg_enable; 359 struct iavf_eth_stats current_stats; 360 struct iavf_vsi vsi; 361 u32 aq_wait_count; 362 /* RSS stuff */ 363 u64 hena; 364 u16 rss_key_size; 365 u16 rss_lut_size; 366 u8 *rss_key; 367 u8 *rss_lut; 368 /* ADQ related members */ 369 struct iavf_channel_config ch_config; 370 u8 num_tc; 371 struct list_head cloud_filter_list; 372 /* lock to protect access to the cloud filter list */ 373 spinlock_t cloud_filter_list_lock; 374 u16 num_cloud_filters; 375 376 #define IAVF_MAX_FDIR_FILTERS 128 /* max allowed Flow Director filters */ 377 u16 fdir_active_fltr; 378 struct list_head fdir_list_head; 379 spinlock_t fdir_fltr_lock; /* protect the Flow Director filter list */ 380 381 struct list_head adv_rss_list_head; 382 spinlock_t adv_rss_lock; /* protect the RSS management list */ 383 }; 384 385 386 /* Ethtool Private Flags */ 387 388 /* lan device, used by client interface */ 389 struct iavf_device { 390 struct list_head list; 391 struct iavf_adapter *vf; 392 }; 393 394 /* needed by iavf_ethtool.c */ 395 extern char iavf_driver_name[]; 396 extern struct workqueue_struct *iavf_wq; 397 398 int iavf_up(struct iavf_adapter *adapter); 399 void iavf_down(struct iavf_adapter *adapter); 400 int iavf_process_config(struct iavf_adapter *adapter); 401 void iavf_schedule_reset(struct iavf_adapter *adapter); 402 void iavf_reset(struct iavf_adapter *adapter); 403 void iavf_set_ethtool_ops(struct net_device *netdev); 404 void iavf_update_stats(struct iavf_adapter *adapter); 405 void iavf_reset_interrupt_capability(struct iavf_adapter *adapter); 406 int iavf_init_interrupt_scheme(struct iavf_adapter *adapter); 407 void iavf_irq_enable_queues(struct iavf_adapter *adapter, u32 mask); 408 void iavf_free_all_tx_resources(struct iavf_adapter *adapter); 409 void iavf_free_all_rx_resources(struct iavf_adapter *adapter); 410 411 void iavf_napi_add_all(struct iavf_adapter *adapter); 412 void iavf_napi_del_all(struct iavf_adapter *adapter); 413 414 int iavf_send_api_ver(struct iavf_adapter *adapter); 415 int iavf_verify_api_ver(struct iavf_adapter *adapter); 416 int iavf_send_vf_config_msg(struct iavf_adapter *adapter); 417 int iavf_get_vf_config(struct iavf_adapter *adapter); 418 void iavf_irq_enable(struct iavf_adapter *adapter, bool flush); 419 void iavf_configure_queues(struct iavf_adapter *adapter); 420 void iavf_deconfigure_queues(struct iavf_adapter *adapter); 421 void iavf_enable_queues(struct iavf_adapter *adapter); 422 void iavf_disable_queues(struct iavf_adapter *adapter); 423 void iavf_map_queues(struct iavf_adapter *adapter); 424 int iavf_request_queues(struct iavf_adapter *adapter, int num); 425 void iavf_add_ether_addrs(struct iavf_adapter *adapter); 426 void iavf_del_ether_addrs(struct iavf_adapter *adapter); 427 void iavf_add_vlans(struct iavf_adapter *adapter); 428 void iavf_del_vlans(struct iavf_adapter *adapter); 429 void iavf_set_promiscuous(struct iavf_adapter *adapter, int flags); 430 void iavf_request_stats(struct iavf_adapter *adapter); 431 void iavf_request_reset(struct iavf_adapter *adapter); 432 void iavf_get_hena(struct iavf_adapter *adapter); 433 void iavf_set_hena(struct iavf_adapter *adapter); 434 void iavf_set_rss_key(struct iavf_adapter *adapter); 435 void iavf_set_rss_lut(struct iavf_adapter *adapter); 436 void iavf_enable_vlan_stripping(struct iavf_adapter *adapter); 437 void iavf_disable_vlan_stripping(struct iavf_adapter *adapter); 438 void iavf_virtchnl_completion(struct iavf_adapter *adapter, 439 enum virtchnl_ops v_opcode, 440 enum iavf_status v_retval, u8 *msg, u16 msglen); 441 int iavf_config_rss(struct iavf_adapter *adapter); 442 int iavf_lan_add_device(struct iavf_adapter *adapter); 443 int iavf_lan_del_device(struct iavf_adapter *adapter); 444 void iavf_client_subtask(struct iavf_adapter *adapter); 445 void iavf_notify_client_message(struct iavf_vsi *vsi, u8 *msg, u16 len); 446 void iavf_notify_client_l2_params(struct iavf_vsi *vsi); 447 void iavf_notify_client_open(struct iavf_vsi *vsi); 448 void iavf_notify_client_close(struct iavf_vsi *vsi, bool reset); 449 void iavf_enable_channels(struct iavf_adapter *adapter); 450 void iavf_disable_channels(struct iavf_adapter *adapter); 451 void iavf_add_cloud_filter(struct iavf_adapter *adapter); 452 void iavf_del_cloud_filter(struct iavf_adapter *adapter); 453 void iavf_add_fdir_filter(struct iavf_adapter *adapter); 454 void iavf_del_fdir_filter(struct iavf_adapter *adapter); 455 void iavf_add_adv_rss_cfg(struct iavf_adapter *adapter); 456 void iavf_del_adv_rss_cfg(struct iavf_adapter *adapter); 457 struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter, 458 const u8 *macaddr); 459 #endif /* _IAVF_H_ */ 460