1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright(c) 1999 - 2018 Intel Corporation. */ 3 4 #ifndef _IXGBEVF_H_ 5 #define _IXGBEVF_H_ 6 7 #include <linux/types.h> 8 #include <linux/bitops.h> 9 #include <linux/timer.h> 10 #include <linux/io.h> 11 #include <linux/netdevice.h> 12 #include <linux/if_vlan.h> 13 #include <linux/u64_stats_sync.h> 14 #include <net/xdp.h> 15 16 #include "vf.h" 17 #include "ipsec.h" 18 19 #define IXGBE_MAX_TXD_PWR 14 20 #define IXGBE_MAX_DATA_PER_TXD BIT(IXGBE_MAX_TXD_PWR) 21 22 /* Tx Descriptors needed, worst case */ 23 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IXGBE_MAX_DATA_PER_TXD) 24 #define DESC_NEEDED (MAX_SKB_FRAGS + 4) 25 26 /* wrapper around a pointer to a socket buffer, 27 * so a DMA handle can be stored along with the buffer 28 */ 29 struct ixgbevf_tx_buffer { 30 union ixgbe_adv_tx_desc *next_to_watch; 31 unsigned long time_stamp; 32 union { 33 struct sk_buff *skb; 34 /* XDP uses address ptr on irq_clean */ 35 void *data; 36 }; 37 unsigned int bytecount; 38 unsigned short gso_segs; 39 __be16 protocol; 40 DEFINE_DMA_UNMAP_ADDR(dma); 41 DEFINE_DMA_UNMAP_LEN(len); 42 u32 tx_flags; 43 }; 44 45 struct ixgbevf_rx_buffer { 46 dma_addr_t dma; 47 struct page *page; 48 #if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536) 49 __u32 page_offset; 50 #else 51 __u16 page_offset; 52 #endif 53 __u16 pagecnt_bias; 54 }; 55 56 struct ixgbevf_stats { 57 u64 packets; 58 u64 bytes; 59 }; 60 61 struct ixgbevf_tx_queue_stats { 62 u64 restart_queue; 63 u64 tx_busy; 64 u64 tx_done_old; 65 }; 66 67 struct ixgbevf_rx_queue_stats { 68 u64 alloc_rx_page_failed; 69 u64 alloc_rx_buff_failed; 70 u64 alloc_rx_page; 71 u64 csum_err; 72 }; 73 74 enum ixgbevf_ring_state_t { 75 __IXGBEVF_RX_3K_BUFFER, 76 __IXGBEVF_RX_BUILD_SKB_ENABLED, 77 __IXGBEVF_TX_DETECT_HANG, 78 __IXGBEVF_HANG_CHECK_ARMED, 79 __IXGBEVF_TX_XDP_RING, 80 __IXGBEVF_TX_XDP_RING_PRIMED, 81 }; 82 83 #define ring_is_xdp(ring) \ 84 test_bit(__IXGBEVF_TX_XDP_RING, &(ring)->state) 85 #define set_ring_xdp(ring) \ 86 set_bit(__IXGBEVF_TX_XDP_RING, &(ring)->state) 87 #define clear_ring_xdp(ring) \ 88 clear_bit(__IXGBEVF_TX_XDP_RING, &(ring)->state) 89 90 struct ixgbevf_ring { 91 struct ixgbevf_ring *next; 92 struct ixgbevf_q_vector *q_vector; /* backpointer to q_vector */ 93 struct net_device *netdev; 94 struct bpf_prog *xdp_prog; 95 struct device *dev; 96 void *desc; /* descriptor ring memory */ 97 dma_addr_t dma; /* phys. address of descriptor ring */ 98 unsigned int size; /* length in bytes */ 99 u16 count; /* amount of descriptors */ 100 u16 next_to_use; 101 u16 next_to_clean; 102 u16 next_to_alloc; 103 104 union { 105 struct ixgbevf_tx_buffer *tx_buffer_info; 106 struct ixgbevf_rx_buffer *rx_buffer_info; 107 }; 108 unsigned long state; 109 struct ixgbevf_stats stats; 110 struct u64_stats_sync syncp; 111 union { 112 struct ixgbevf_tx_queue_stats tx_stats; 113 struct ixgbevf_rx_queue_stats rx_stats; 114 }; 115 struct xdp_rxq_info xdp_rxq; 116 u64 hw_csum_rx_error; 117 u8 __iomem *tail; 118 struct sk_buff *skb; 119 120 /* holds the special value that gets the hardware register offset 121 * associated with this ring, which is different for DCB and RSS modes 122 */ 123 u16 reg_idx; 124 int queue_index; /* needed for multiqueue queue management */ 125 } ____cacheline_internodealigned_in_smp; 126 127 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 128 #define IXGBEVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 129 130 #define MAX_RX_QUEUES IXGBE_VF_MAX_RX_QUEUES 131 #define MAX_TX_QUEUES IXGBE_VF_MAX_TX_QUEUES 132 #define MAX_XDP_QUEUES IXGBE_VF_MAX_TX_QUEUES 133 #define IXGBEVF_MAX_RSS_QUEUES 2 134 #define IXGBEVF_82599_RETA_SIZE 128 /* 128 entries */ 135 #define IXGBEVF_X550_VFRETA_SIZE 64 /* 64 entries */ 136 #define IXGBEVF_RSS_HASH_KEY_SIZE 40 137 #define IXGBEVF_VFRSSRK_REGS 10 /* 10 registers for RSS key */ 138 139 #define IXGBEVF_DEFAULT_TXD 1024 140 #define IXGBEVF_DEFAULT_RXD 512 141 #define IXGBEVF_MAX_TXD 4096 142 #define IXGBEVF_MIN_TXD 64 143 #define IXGBEVF_MAX_RXD 4096 144 #define IXGBEVF_MIN_RXD 64 145 146 /* Supported Rx Buffer Sizes */ 147 #define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */ 148 #define IXGBEVF_RXBUFFER_2048 2048 149 #define IXGBEVF_RXBUFFER_3072 3072 150 151 #define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256 152 153 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) 154 155 #define IXGBEVF_SKB_PAD (NET_SKB_PAD + NET_IP_ALIGN) 156 #if (PAGE_SIZE < 8192) 157 #define IXGBEVF_MAX_FRAME_BUILD_SKB \ 158 (SKB_WITH_OVERHEAD(IXGBEVF_RXBUFFER_2048) - IXGBEVF_SKB_PAD) 159 #else 160 #define IXGBEVF_MAX_FRAME_BUILD_SKB IXGBEVF_RXBUFFER_2048 161 #endif 162 163 #define IXGBE_TX_FLAGS_CSUM BIT(0) 164 #define IXGBE_TX_FLAGS_VLAN BIT(1) 165 #define IXGBE_TX_FLAGS_TSO BIT(2) 166 #define IXGBE_TX_FLAGS_IPV4 BIT(3) 167 #define IXGBE_TX_FLAGS_IPSEC BIT(4) 168 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000 169 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000 170 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16 171 172 #define ring_uses_large_buffer(ring) \ 173 test_bit(__IXGBEVF_RX_3K_BUFFER, &(ring)->state) 174 #define set_ring_uses_large_buffer(ring) \ 175 set_bit(__IXGBEVF_RX_3K_BUFFER, &(ring)->state) 176 #define clear_ring_uses_large_buffer(ring) \ 177 clear_bit(__IXGBEVF_RX_3K_BUFFER, &(ring)->state) 178 179 #define ring_uses_build_skb(ring) \ 180 test_bit(__IXGBEVF_RX_BUILD_SKB_ENABLED, &(ring)->state) 181 #define set_ring_build_skb_enabled(ring) \ 182 set_bit(__IXGBEVF_RX_BUILD_SKB_ENABLED, &(ring)->state) 183 #define clear_ring_build_skb_enabled(ring) \ 184 clear_bit(__IXGBEVF_RX_BUILD_SKB_ENABLED, &(ring)->state) 185 186 static inline unsigned int ixgbevf_rx_bufsz(struct ixgbevf_ring *ring) 187 { 188 #if (PAGE_SIZE < 8192) 189 if (ring_uses_large_buffer(ring)) 190 return IXGBEVF_RXBUFFER_3072; 191 192 if (ring_uses_build_skb(ring)) 193 return IXGBEVF_MAX_FRAME_BUILD_SKB; 194 #endif 195 return IXGBEVF_RXBUFFER_2048; 196 } 197 198 static inline unsigned int ixgbevf_rx_pg_order(struct ixgbevf_ring *ring) 199 { 200 #if (PAGE_SIZE < 8192) 201 if (ring_uses_large_buffer(ring)) 202 return 1; 203 #endif 204 return 0; 205 } 206 207 #define ixgbevf_rx_pg_size(_ring) (PAGE_SIZE << ixgbevf_rx_pg_order(_ring)) 208 209 #define check_for_tx_hang(ring) \ 210 test_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state) 211 #define set_check_for_tx_hang(ring) \ 212 set_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state) 213 #define clear_check_for_tx_hang(ring) \ 214 clear_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state) 215 216 struct ixgbevf_ring_container { 217 struct ixgbevf_ring *ring; /* pointer to linked list of rings */ 218 unsigned int total_bytes; /* total bytes processed this int */ 219 unsigned int total_packets; /* total packets processed this int */ 220 u8 count; /* total number of rings in vector */ 221 u8 itr; /* current ITR setting for ring */ 222 }; 223 224 /* iterator for handling rings in ring container */ 225 #define ixgbevf_for_each_ring(pos, head) \ 226 for (pos = (head).ring; pos != NULL; pos = pos->next) 227 228 /* MAX_MSIX_Q_VECTORS of these are allocated, 229 * but we only use one per queue-specific vector. 230 */ 231 struct ixgbevf_q_vector { 232 struct ixgbevf_adapter *adapter; 233 /* index of q_vector within array, also used for finding the bit in 234 * EICR and friends that represents the vector for this ring 235 */ 236 u16 v_idx; 237 u16 itr; /* Interrupt throttle rate written to EITR */ 238 struct napi_struct napi; 239 struct ixgbevf_ring_container rx, tx; 240 struct rcu_head rcu; /* to avoid race with update stats on free */ 241 char name[IFNAMSIZ + 9]; 242 243 /* for dynamic allocation of rings associated with this q_vector */ 244 struct ixgbevf_ring ring[0] ____cacheline_internodealigned_in_smp; 245 #ifdef CONFIG_NET_RX_BUSY_POLL 246 unsigned int state; 247 #define IXGBEVF_QV_STATE_IDLE 0 248 #define IXGBEVF_QV_STATE_NAPI 1 /* NAPI owns this QV */ 249 #define IXGBEVF_QV_STATE_POLL 2 /* poll owns this QV */ 250 #define IXGBEVF_QV_STATE_DISABLED 4 /* QV is disabled */ 251 #define IXGBEVF_QV_OWNED (IXGBEVF_QV_STATE_NAPI | IXGBEVF_QV_STATE_POLL) 252 #define IXGBEVF_QV_LOCKED (IXGBEVF_QV_OWNED | IXGBEVF_QV_STATE_DISABLED) 253 #define IXGBEVF_QV_STATE_NAPI_YIELD 8 /* NAPI yielded this QV */ 254 #define IXGBEVF_QV_STATE_POLL_YIELD 16 /* poll yielded this QV */ 255 #define IXGBEVF_QV_YIELD (IXGBEVF_QV_STATE_NAPI_YIELD | \ 256 IXGBEVF_QV_STATE_POLL_YIELD) 257 #define IXGBEVF_QV_USER_PEND (IXGBEVF_QV_STATE_POLL | \ 258 IXGBEVF_QV_STATE_POLL_YIELD) 259 spinlock_t lock; 260 #endif /* CONFIG_NET_RX_BUSY_POLL */ 261 }; 262 263 /* microsecond values for various ITR rates shifted by 2 to fit itr register 264 * with the first 3 bits reserved 0 265 */ 266 #define IXGBE_MIN_RSC_ITR 24 267 #define IXGBE_100K_ITR 40 268 #define IXGBE_20K_ITR 200 269 #define IXGBE_12K_ITR 336 270 271 /* Helper macros to switch between ints/sec and what the register uses. 272 * And yes, it's the same math going both ways. The lowest value 273 * supported by all of the ixgbe hardware is 8. 274 */ 275 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \ 276 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8) 277 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG 278 279 /* ixgbevf_test_staterr - tests bits in Rx descriptor status and error fields */ 280 static inline __le32 ixgbevf_test_staterr(union ixgbe_adv_rx_desc *rx_desc, 281 const u32 stat_err_bits) 282 { 283 return rx_desc->wb.upper.status_error & cpu_to_le32(stat_err_bits); 284 } 285 286 static inline u16 ixgbevf_desc_unused(struct ixgbevf_ring *ring) 287 { 288 u16 ntc = ring->next_to_clean; 289 u16 ntu = ring->next_to_use; 290 291 return ((ntc > ntu) ? 0 : ring->count) + ntc - ntu - 1; 292 } 293 294 static inline void ixgbevf_write_tail(struct ixgbevf_ring *ring, u32 value) 295 { 296 writel(value, ring->tail); 297 } 298 299 #define IXGBEVF_RX_DESC(R, i) \ 300 (&(((union ixgbe_adv_rx_desc *)((R)->desc))[i])) 301 #define IXGBEVF_TX_DESC(R, i) \ 302 (&(((union ixgbe_adv_tx_desc *)((R)->desc))[i])) 303 #define IXGBEVF_TX_CTXTDESC(R, i) \ 304 (&(((struct ixgbe_adv_tx_context_desc *)((R)->desc))[i])) 305 306 #define IXGBE_MAX_JUMBO_FRAME_SIZE 9728 /* Maximum Supported Size 9.5KB */ 307 308 #define OTHER_VECTOR 1 309 #define NON_Q_VECTORS (OTHER_VECTOR) 310 311 #define MAX_MSIX_Q_VECTORS 2 312 313 #define MIN_MSIX_Q_VECTORS 1 314 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS) 315 316 #define IXGBEVF_RX_DMA_ATTR \ 317 (DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING) 318 319 /* board specific private data structure */ 320 struct ixgbevf_adapter { 321 /* this field must be first, see ixgbevf_process_skb_fields */ 322 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 323 324 struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS]; 325 326 /* Interrupt Throttle Rate */ 327 u16 rx_itr_setting; 328 u16 tx_itr_setting; 329 330 /* interrupt masks */ 331 u32 eims_enable_mask; 332 u32 eims_other; 333 334 /* XDP */ 335 int num_xdp_queues; 336 struct ixgbevf_ring *xdp_ring[MAX_XDP_QUEUES]; 337 338 /* TX */ 339 int num_tx_queues; 340 struct ixgbevf_ring *tx_ring[MAX_TX_QUEUES]; /* One per active queue */ 341 u64 restart_queue; 342 u32 tx_timeout_count; 343 u64 tx_ipsec; 344 345 /* RX */ 346 int num_rx_queues; 347 struct ixgbevf_ring *rx_ring[MAX_TX_QUEUES]; /* One per active queue */ 348 u64 hw_csum_rx_error; 349 u64 hw_rx_no_dma_resources; 350 int num_msix_vectors; 351 u64 alloc_rx_page_failed; 352 u64 alloc_rx_buff_failed; 353 u64 alloc_rx_page; 354 u64 rx_ipsec; 355 356 struct msix_entry *msix_entries; 357 358 /* OS defined structs */ 359 struct net_device *netdev; 360 struct bpf_prog *xdp_prog; 361 struct pci_dev *pdev; 362 363 /* structs defined in ixgbe_vf.h */ 364 struct ixgbe_hw hw; 365 u16 msg_enable; 366 /* Interrupt Throttle Rate */ 367 u32 eitr_param; 368 369 struct ixgbevf_hw_stats stats; 370 371 unsigned long state; 372 u64 tx_busy; 373 unsigned int tx_ring_count; 374 unsigned int xdp_ring_count; 375 unsigned int rx_ring_count; 376 377 u8 __iomem *io_addr; /* Mainly for iounmap use */ 378 u32 link_speed; 379 bool link_up; 380 381 struct timer_list service_timer; 382 struct work_struct service_task; 383 384 spinlock_t mbx_lock; 385 unsigned long last_reset; 386 387 u32 *rss_key; 388 u8 rss_indir_tbl[IXGBEVF_X550_VFRETA_SIZE]; 389 u32 flags; 390 bool link_state; 391 392 #define IXGBEVF_FLAGS_LEGACY_RX BIT(1) 393 394 #ifdef CONFIG_XFRM 395 struct ixgbevf_ipsec *ipsec; 396 #endif /* CONFIG_XFRM */ 397 }; 398 399 enum ixbgevf_state_t { 400 __IXGBEVF_TESTING, 401 __IXGBEVF_RESETTING, 402 __IXGBEVF_DOWN, 403 __IXGBEVF_DISABLED, 404 __IXGBEVF_REMOVING, 405 __IXGBEVF_SERVICE_SCHED, 406 __IXGBEVF_SERVICE_INITED, 407 __IXGBEVF_RESET_REQUESTED, 408 __IXGBEVF_QUEUE_RESET_REQUESTED, 409 }; 410 411 enum ixgbevf_boards { 412 board_82599_vf, 413 board_82599_vf_hv, 414 board_X540_vf, 415 board_X540_vf_hv, 416 board_X550_vf, 417 board_X550_vf_hv, 418 board_X550EM_x_vf, 419 board_X550EM_x_vf_hv, 420 board_x550em_a_vf, 421 }; 422 423 enum ixgbevf_xcast_modes { 424 IXGBEVF_XCAST_MODE_NONE = 0, 425 IXGBEVF_XCAST_MODE_MULTI, 426 IXGBEVF_XCAST_MODE_ALLMULTI, 427 IXGBEVF_XCAST_MODE_PROMISC, 428 }; 429 430 extern const struct ixgbevf_info ixgbevf_82599_vf_info; 431 extern const struct ixgbevf_info ixgbevf_X540_vf_info; 432 extern const struct ixgbevf_info ixgbevf_X550_vf_info; 433 extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_info; 434 extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops; 435 extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops_legacy; 436 extern const struct ixgbevf_info ixgbevf_x550em_a_vf_info; 437 438 extern const struct ixgbevf_info ixgbevf_82599_vf_hv_info; 439 extern const struct ixgbevf_info ixgbevf_X540_vf_hv_info; 440 extern const struct ixgbevf_info ixgbevf_X550_vf_hv_info; 441 extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_hv_info; 442 extern const struct ixgbe_mbx_operations ixgbevf_hv_mbx_ops; 443 444 /* needed by ethtool.c */ 445 extern const char ixgbevf_driver_name[]; 446 447 int ixgbevf_open(struct net_device *netdev); 448 int ixgbevf_close(struct net_device *netdev); 449 void ixgbevf_up(struct ixgbevf_adapter *adapter); 450 void ixgbevf_down(struct ixgbevf_adapter *adapter); 451 void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter); 452 void ixgbevf_reset(struct ixgbevf_adapter *adapter); 453 void ixgbevf_set_ethtool_ops(struct net_device *netdev); 454 int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *adapter, 455 struct ixgbevf_ring *rx_ring); 456 int ixgbevf_setup_tx_resources(struct ixgbevf_ring *); 457 void ixgbevf_free_rx_resources(struct ixgbevf_ring *); 458 void ixgbevf_free_tx_resources(struct ixgbevf_ring *); 459 void ixgbevf_update_stats(struct ixgbevf_adapter *adapter); 460 int ethtool_ioctl(struct ifreq *ifr); 461 462 extern void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector); 463 464 #ifdef CONFIG_IXGBEVF_IPSEC 465 void ixgbevf_init_ipsec_offload(struct ixgbevf_adapter *adapter); 466 void ixgbevf_stop_ipsec_offload(struct ixgbevf_adapter *adapter); 467 void ixgbevf_ipsec_restore(struct ixgbevf_adapter *adapter); 468 void ixgbevf_ipsec_rx(struct ixgbevf_ring *rx_ring, 469 union ixgbe_adv_rx_desc *rx_desc, 470 struct sk_buff *skb); 471 int ixgbevf_ipsec_tx(struct ixgbevf_ring *tx_ring, 472 struct ixgbevf_tx_buffer *first, 473 struct ixgbevf_ipsec_tx_data *itd); 474 #else 475 static inline void ixgbevf_init_ipsec_offload(struct ixgbevf_adapter *adapter) 476 { } 477 static inline void ixgbevf_stop_ipsec_offload(struct ixgbevf_adapter *adapter) 478 { } 479 static inline void ixgbevf_ipsec_restore(struct ixgbevf_adapter *adapter) { } 480 static inline void ixgbevf_ipsec_rx(struct ixgbevf_ring *rx_ring, 481 union ixgbe_adv_rx_desc *rx_desc, 482 struct sk_buff *skb) { } 483 static inline int ixgbevf_ipsec_tx(struct ixgbevf_ring *tx_ring, 484 struct ixgbevf_tx_buffer *first, 485 struct ixgbevf_ipsec_tx_data *itd) 486 { return 0; } 487 #endif /* CONFIG_IXGBEVF_IPSEC */ 488 489 #define ixgbevf_hw_to_netdev(hw) \ 490 (((struct ixgbevf_adapter *)(hw)->back)->netdev) 491 492 #define hw_dbg(hw, format, arg...) \ 493 netdev_dbg(ixgbevf_hw_to_netdev(hw), format, ## arg) 494 495 s32 ixgbevf_poll_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size); 496 s32 ixgbevf_write_mbx(struct ixgbe_hw *hw, u32 *msg, u16 size); 497 498 #endif /* _IXGBEVF_H_ */ 499