1 /* 2 * libcxgbi.h: Chelsio common library for T3/T4 iSCSI driver. 3 * 4 * Copyright (c) 2010-2015 Chelsio Communications, Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation. 9 * 10 * Written by: Karen Xie (kxie@chelsio.com) 11 * Written by: Rakesh Ranjan (rranjan@chelsio.com) 12 */ 13 14 #ifndef __LIBCXGBI_H__ 15 #define __LIBCXGBI_H__ 16 17 #include <linux/kernel.h> 18 #include <linux/errno.h> 19 #include <linux/types.h> 20 #include <linux/debugfs.h> 21 #include <linux/list.h> 22 #include <linux/netdevice.h> 23 #include <linux/if_vlan.h> 24 #include <linux/scatterlist.h> 25 #include <linux/skbuff.h> 26 #include <linux/vmalloc.h> 27 #include <scsi/scsi_device.h> 28 #include <scsi/libiscsi_tcp.h> 29 30 #include <libcxgb_ppm.h> 31 32 enum cxgbi_dbg_flag { 33 CXGBI_DBG_ISCSI, 34 CXGBI_DBG_DDP, 35 CXGBI_DBG_TOE, 36 CXGBI_DBG_SOCK, 37 38 CXGBI_DBG_PDU_TX, 39 CXGBI_DBG_PDU_RX, 40 CXGBI_DBG_DEV, 41 }; 42 43 #define log_debug(level, fmt, ...) \ 44 do { \ 45 if (dbg_level & (level)) \ 46 pr_info(fmt, ##__VA_ARGS__); \ 47 } while (0) 48 49 #define pr_info_ipaddr(fmt_trail, \ 50 addr1, addr2, args_trail...) \ 51 do { \ 52 if (!((1 << CXGBI_DBG_SOCK) & dbg_level)) \ 53 break; \ 54 pr_info("%pISpc - %pISpc, " fmt_trail, \ 55 addr1, addr2, args_trail); \ 56 } while (0) 57 58 /* max. connections per adapter */ 59 #define CXGBI_MAX_CONN 16384 60 61 /* always allocate rooms for AHS */ 62 #define SKB_TX_ISCSI_PDU_HEADER_MAX \ 63 (sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE) 64 65 #define ISCSI_PDU_NONPAYLOAD_LEN 312 /* bhs(48) + ahs(256) + digest(8)*/ 66 67 /* 68 * align pdu size to multiple of 512 for better performance 69 */ 70 #define cxgbi_align_pdu_size(n) do { n = (n) & (~511); } while (0) 71 72 #define ULP2_MODE_ISCSI 2 73 74 #define ULP2_MAX_PKT_SIZE 16224 75 #define ULP2_MAX_PDU_PAYLOAD \ 76 (ULP2_MAX_PKT_SIZE - ISCSI_PDU_NONPAYLOAD_LEN) 77 78 #define CXGBI_ULP2_MAX_ISO_PAYLOAD 65535 79 80 #define CXGBI_MAX_ISO_DATA_IN_SKB \ 81 min_t(u32, MAX_SKB_FRAGS << PAGE_SHIFT, CXGBI_ULP2_MAX_ISO_PAYLOAD) 82 83 #define cxgbi_is_iso_config(csk) ((csk)->cdev->skb_iso_txhdr) 84 #define cxgbi_is_iso_disabled(csk) ((csk)->disable_iso) 85 86 /* 87 * For iscsi connections HW may inserts digest bytes into the pdu. Those digest 88 * bytes are not sent by the host but are part of the TCP payload and therefore 89 * consume TCP sequence space. 90 */ 91 static const unsigned int ulp2_extra_len[] = { 0, 4, 4, 8 }; 92 static inline unsigned int cxgbi_ulp_extra_len(int submode) 93 { 94 return ulp2_extra_len[submode & 3]; 95 } 96 97 #define CPL_RX_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */ 98 #define CPL_RX_DDP_STATUS_PAD_SHIFT 19 /* pad error */ 99 #define CPL_RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */ 100 #define CPL_RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */ 101 102 /* 103 * sge_opaque_hdr - 104 * Opaque version of structure the SGE stores at skb->head of TX_DATA packets 105 * and for which we must reserve space. 106 */ 107 struct sge_opaque_hdr { 108 void *dev; 109 dma_addr_t addr[MAX_SKB_FRAGS + 1]; 110 }; 111 112 struct cxgbi_sock { 113 struct cxgbi_device *cdev; 114 115 int tid; 116 int atid; 117 unsigned long flags; 118 unsigned int mtu; 119 unsigned short rss_qid; 120 unsigned short txq_idx; 121 unsigned short advmss; 122 unsigned int tx_chan; 123 unsigned int rx_chan; 124 unsigned int mss_idx; 125 unsigned int smac_idx; 126 unsigned char port_id; 127 int wr_max_cred; 128 int wr_cred; 129 int wr_una_cred; 130 #ifdef CONFIG_CHELSIO_T4_DCB 131 u8 dcb_priority; 132 #endif 133 unsigned char hcrc_len; 134 unsigned char dcrc_len; 135 136 void *l2t; 137 struct sk_buff *wr_pending_head; 138 struct sk_buff *wr_pending_tail; 139 struct sk_buff *cpl_close; 140 struct sk_buff *cpl_abort_req; 141 struct sk_buff *cpl_abort_rpl; 142 struct sk_buff *skb_ulp_lhdr; 143 spinlock_t lock; 144 struct kref refcnt; 145 unsigned int state; 146 unsigned int csk_family; 147 union { 148 struct sockaddr_in saddr; 149 struct sockaddr_in6 saddr6; 150 }; 151 union { 152 struct sockaddr_in daddr; 153 struct sockaddr_in6 daddr6; 154 }; 155 struct dst_entry *dst; 156 struct sk_buff_head receive_queue; 157 struct sk_buff_head write_queue; 158 struct timer_list retry_timer; 159 struct completion cmpl; 160 int err; 161 rwlock_t callback_lock; 162 void *user_data; 163 164 u32 rcv_nxt; 165 u32 copied_seq; 166 u32 rcv_wup; 167 u32 snd_nxt; 168 u32 snd_una; 169 u32 write_seq; 170 u32 snd_win; 171 u32 rcv_win; 172 173 bool disable_iso; 174 u32 no_tx_credits; 175 unsigned long prev_iso_ts; 176 }; 177 178 /* 179 * connection states 180 */ 181 enum cxgbi_sock_states{ 182 CTP_CLOSED, 183 CTP_CONNECTING, 184 CTP_ACTIVE_OPEN, 185 CTP_ESTABLISHED, 186 CTP_ACTIVE_CLOSE, 187 CTP_PASSIVE_CLOSE, 188 CTP_CLOSE_WAIT_1, 189 CTP_CLOSE_WAIT_2, 190 CTP_ABORTING, 191 }; 192 193 /* 194 * Connection flags -- many to track some close related events. 195 */ 196 enum cxgbi_sock_flags { 197 CTPF_ABORT_RPL_RCVD, /*received one ABORT_RPL_RSS message */ 198 CTPF_ABORT_REQ_RCVD, /*received one ABORT_REQ_RSS message */ 199 CTPF_ABORT_RPL_PENDING, /* expecting an abort reply */ 200 CTPF_TX_DATA_SENT, /* already sent a TX_DATA WR */ 201 CTPF_ACTIVE_CLOSE_NEEDED,/* need to be closed */ 202 CTPF_HAS_ATID, /* reserved atid */ 203 CTPF_HAS_TID, /* reserved hw tid */ 204 CTPF_OFFLOAD_DOWN, /* offload function off */ 205 CTPF_LOGOUT_RSP_RCVD, /* received logout response */ 206 }; 207 208 struct cxgbi_skb_rx_cb { 209 __u32 ddigest; 210 __u32 pdulen; 211 }; 212 213 struct cxgbi_skb_tx_cb { 214 void *handle; 215 void *arp_err_handler; 216 struct sk_buff *wr_next; 217 u16 iscsi_hdr_len; 218 u8 ulp_mode; 219 }; 220 221 enum cxgbi_skcb_flags { 222 SKCBF_TX_NEED_HDR, /* packet needs a header */ 223 SKCBF_TX_MEM_WRITE, /* memory write */ 224 SKCBF_TX_FLAG_COMPL, /* wr completion flag */ 225 SKCBF_RX_COALESCED, /* received whole pdu */ 226 SKCBF_RX_HDR, /* received pdu header */ 227 SKCBF_RX_DATA, /* received pdu payload */ 228 SKCBF_RX_STATUS, /* received ddp status */ 229 SKCBF_RX_ISCSI_COMPL, /* received iscsi completion */ 230 SKCBF_RX_DATA_DDPD, /* pdu payload ddp'd */ 231 SKCBF_RX_HCRC_ERR, /* header digest error */ 232 SKCBF_RX_DCRC_ERR, /* data digest error */ 233 SKCBF_RX_PAD_ERR, /* padding byte error */ 234 SKCBF_TX_ISO, /* iso cpl in tx skb */ 235 }; 236 237 struct cxgbi_skb_cb { 238 union { 239 struct cxgbi_skb_rx_cb rx; 240 struct cxgbi_skb_tx_cb tx; 241 }; 242 unsigned long flags; 243 unsigned int seq; 244 }; 245 246 #define CXGBI_SKB_CB(skb) ((struct cxgbi_skb_cb *)&((skb)->cb[0])) 247 #define cxgbi_skcb_flags(skb) (CXGBI_SKB_CB(skb)->flags) 248 #define cxgbi_skcb_tcp_seq(skb) (CXGBI_SKB_CB(skb)->seq) 249 #define cxgbi_skcb_rx_ddigest(skb) (CXGBI_SKB_CB(skb)->rx.ddigest) 250 #define cxgbi_skcb_rx_pdulen(skb) (CXGBI_SKB_CB(skb)->rx.pdulen) 251 #define cxgbi_skcb_tx_wr_next(skb) (CXGBI_SKB_CB(skb)->tx.wr_next) 252 #define cxgbi_skcb_tx_iscsi_hdrlen(skb) (CXGBI_SKB_CB(skb)->tx.iscsi_hdr_len) 253 #define cxgbi_skcb_tx_ulp_mode(skb) (CXGBI_SKB_CB(skb)->tx.ulp_mode) 254 255 static inline void cxgbi_skcb_set_flag(struct sk_buff *skb, 256 enum cxgbi_skcb_flags flag) 257 { 258 __set_bit(flag, &(cxgbi_skcb_flags(skb))); 259 } 260 261 static inline void cxgbi_skcb_clear_flag(struct sk_buff *skb, 262 enum cxgbi_skcb_flags flag) 263 { 264 __clear_bit(flag, &(cxgbi_skcb_flags(skb))); 265 } 266 267 static inline int cxgbi_skcb_test_flag(const struct sk_buff *skb, 268 enum cxgbi_skcb_flags flag) 269 { 270 return test_bit(flag, &(cxgbi_skcb_flags(skb))); 271 } 272 273 static inline void cxgbi_sock_set_flag(struct cxgbi_sock *csk, 274 enum cxgbi_sock_flags flag) 275 { 276 __set_bit(flag, &csk->flags); 277 log_debug(1 << CXGBI_DBG_SOCK, 278 "csk 0x%p,%u,0x%lx, bit %d.\n", 279 csk, csk->state, csk->flags, flag); 280 } 281 282 static inline void cxgbi_sock_clear_flag(struct cxgbi_sock *csk, 283 enum cxgbi_sock_flags flag) 284 { 285 __clear_bit(flag, &csk->flags); 286 log_debug(1 << CXGBI_DBG_SOCK, 287 "csk 0x%p,%u,0x%lx, bit %d.\n", 288 csk, csk->state, csk->flags, flag); 289 } 290 291 static inline int cxgbi_sock_flag(struct cxgbi_sock *csk, 292 enum cxgbi_sock_flags flag) 293 { 294 if (csk == NULL) 295 return 0; 296 return test_bit(flag, &csk->flags); 297 } 298 299 static inline void cxgbi_sock_set_state(struct cxgbi_sock *csk, int state) 300 { 301 log_debug(1 << CXGBI_DBG_SOCK, 302 "csk 0x%p,%u,0x%lx, state -> %u.\n", 303 csk, csk->state, csk->flags, state); 304 csk->state = state; 305 } 306 307 static inline void cxgbi_sock_free(struct kref *kref) 308 { 309 struct cxgbi_sock *csk = container_of(kref, 310 struct cxgbi_sock, 311 refcnt); 312 if (csk) { 313 log_debug(1 << CXGBI_DBG_SOCK, 314 "free csk 0x%p, state %u, flags 0x%lx\n", 315 csk, csk->state, csk->flags); 316 kfree(csk); 317 } 318 } 319 320 static inline void __cxgbi_sock_put(const char *fn, struct cxgbi_sock *csk) 321 { 322 log_debug(1 << CXGBI_DBG_SOCK, 323 "%s, put csk 0x%p, ref %u-1.\n", 324 fn, csk, kref_read(&csk->refcnt)); 325 kref_put(&csk->refcnt, cxgbi_sock_free); 326 } 327 #define cxgbi_sock_put(csk) __cxgbi_sock_put(__func__, csk) 328 329 static inline void __cxgbi_sock_get(const char *fn, struct cxgbi_sock *csk) 330 { 331 log_debug(1 << CXGBI_DBG_SOCK, 332 "%s, get csk 0x%p, ref %u+1.\n", 333 fn, csk, kref_read(&csk->refcnt)); 334 kref_get(&csk->refcnt); 335 } 336 #define cxgbi_sock_get(csk) __cxgbi_sock_get(__func__, csk) 337 338 static inline int cxgbi_sock_is_closing(struct cxgbi_sock *csk) 339 { 340 return csk->state >= CTP_ACTIVE_CLOSE; 341 } 342 343 static inline int cxgbi_sock_is_established(struct cxgbi_sock *csk) 344 { 345 return csk->state == CTP_ESTABLISHED; 346 } 347 348 static inline void cxgbi_sock_purge_write_queue(struct cxgbi_sock *csk) 349 { 350 struct sk_buff *skb; 351 352 while ((skb = __skb_dequeue(&csk->write_queue))) 353 __kfree_skb(skb); 354 } 355 356 static inline unsigned int cxgbi_sock_compute_wscale(unsigned int win) 357 { 358 unsigned int wscale = 0; 359 360 while (wscale < 14 && (65535 << wscale) < win) 361 wscale++; 362 return wscale; 363 } 364 365 static inline struct sk_buff *alloc_wr(int wrlen, int dlen, gfp_t gfp) 366 { 367 struct sk_buff *skb = alloc_skb(wrlen + dlen, gfp); 368 369 if (skb) { 370 __skb_put(skb, wrlen); 371 memset(skb->head, 0, wrlen + dlen); 372 } else 373 pr_info("alloc cpl wr skb %u+%u, OOM.\n", wrlen, dlen); 374 return skb; 375 } 376 377 378 /* 379 * The number of WRs needed for an skb depends on the number of fragments 380 * in the skb and whether it has any payload in its main body. This maps the 381 * length of the gather list represented by an skb into the # of necessary WRs. 382 * The extra two fragments are for iscsi bhs and payload padding. 383 */ 384 #define SKB_WR_LIST_SIZE (MAX_SKB_FRAGS + 2) 385 386 static inline void cxgbi_sock_reset_wr_list(struct cxgbi_sock *csk) 387 { 388 csk->wr_pending_head = csk->wr_pending_tail = NULL; 389 } 390 391 static inline void cxgbi_sock_enqueue_wr(struct cxgbi_sock *csk, 392 struct sk_buff *skb) 393 { 394 cxgbi_skcb_tx_wr_next(skb) = NULL; 395 /* 396 * We want to take an extra reference since both us and the driver 397 * need to free the packet before it's really freed. 398 */ 399 skb_get(skb); 400 401 if (!csk->wr_pending_head) 402 csk->wr_pending_head = skb; 403 else 404 cxgbi_skcb_tx_wr_next(csk->wr_pending_tail) = skb; 405 csk->wr_pending_tail = skb; 406 } 407 408 static inline int cxgbi_sock_count_pending_wrs(const struct cxgbi_sock *csk) 409 { 410 int n = 0; 411 const struct sk_buff *skb = csk->wr_pending_head; 412 413 while (skb) { 414 n += skb->csum; 415 skb = cxgbi_skcb_tx_wr_next(skb); 416 } 417 return n; 418 } 419 420 static inline struct sk_buff *cxgbi_sock_peek_wr(const struct cxgbi_sock *csk) 421 { 422 return csk->wr_pending_head; 423 } 424 425 static inline struct sk_buff *cxgbi_sock_dequeue_wr(struct cxgbi_sock *csk) 426 { 427 struct sk_buff *skb = csk->wr_pending_head; 428 429 if (likely(skb)) { 430 csk->wr_pending_head = cxgbi_skcb_tx_wr_next(skb); 431 cxgbi_skcb_tx_wr_next(skb) = NULL; 432 } 433 return skb; 434 } 435 436 void cxgbi_sock_check_wr_invariants(const struct cxgbi_sock *); 437 void cxgbi_sock_purge_wr_queue(struct cxgbi_sock *); 438 void cxgbi_sock_skb_entail(struct cxgbi_sock *, struct sk_buff *); 439 void cxgbi_sock_fail_act_open(struct cxgbi_sock *, int); 440 void cxgbi_sock_act_open_req_arp_failure(void *, struct sk_buff *); 441 void cxgbi_sock_closed(struct cxgbi_sock *); 442 void cxgbi_sock_established(struct cxgbi_sock *, unsigned int, unsigned int); 443 void cxgbi_sock_rcv_abort_rpl(struct cxgbi_sock *); 444 void cxgbi_sock_rcv_peer_close(struct cxgbi_sock *); 445 void cxgbi_sock_rcv_close_conn_rpl(struct cxgbi_sock *, u32); 446 void cxgbi_sock_rcv_wr_ack(struct cxgbi_sock *, unsigned int, unsigned int, 447 int); 448 unsigned int cxgbi_sock_select_mss(struct cxgbi_sock *, unsigned int); 449 void cxgbi_sock_free_cpl_skbs(struct cxgbi_sock *); 450 451 struct cxgbi_hba { 452 struct net_device *ndev; 453 struct net_device *vdev; /* vlan dev */ 454 struct Scsi_Host *shost; 455 struct cxgbi_device *cdev; 456 __be32 ipv4addr; 457 unsigned char port_id; 458 }; 459 460 struct cxgbi_ports_map { 461 unsigned int max_connect; 462 unsigned int used; 463 unsigned short sport_base; 464 spinlock_t lock; 465 unsigned int next; 466 struct cxgbi_sock **port_csk; 467 }; 468 469 #define CXGBI_FLAG_DEV_T3 0x1 470 #define CXGBI_FLAG_DEV_T4 0x2 471 #define CXGBI_FLAG_ADAPTER_RESET 0x4 472 #define CXGBI_FLAG_IPV4_SET 0x10 473 #define CXGBI_FLAG_USE_PPOD_OFLDQ 0x40 474 #define CXGBI_FLAG_DDP_OFF 0x100 475 #define CXGBI_FLAG_DEV_ISO_OFF 0x400 476 477 struct cxgbi_device { 478 struct list_head list_head; 479 struct list_head rcu_node; 480 unsigned int flags; 481 struct net_device **ports; 482 void *lldev; 483 struct cxgbi_hba **hbas; 484 const unsigned short *mtus; 485 unsigned char nmtus; 486 unsigned char nports; 487 struct pci_dev *pdev; 488 struct dentry *debugfs_root; 489 struct iscsi_transport *itp; 490 struct module *owner; 491 492 unsigned int pfvf; 493 unsigned int rx_credit_thres; 494 unsigned int skb_tx_rsvd; 495 u32 skb_iso_txhdr; 496 unsigned int skb_rx_extra; /* for msg coalesced mode */ 497 unsigned int tx_max_size; 498 unsigned int rx_max_size; 499 unsigned int rxq_idx_cntr; 500 struct cxgbi_ports_map pmap; 501 502 void (*dev_ddp_cleanup)(struct cxgbi_device *); 503 struct cxgbi_ppm* (*cdev2ppm)(struct cxgbi_device *); 504 int (*csk_ddp_set_map)(struct cxgbi_ppm *, struct cxgbi_sock *, 505 struct cxgbi_task_tag_info *); 506 void (*csk_ddp_clear_map)(struct cxgbi_device *cdev, 507 struct cxgbi_ppm *, 508 struct cxgbi_task_tag_info *); 509 int (*csk_ddp_setup_digest)(struct cxgbi_sock *, 510 unsigned int, int, int); 511 int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *, 512 unsigned int, int); 513 514 void (*csk_release_offload_resources)(struct cxgbi_sock *); 515 int (*csk_rx_pdu_ready)(struct cxgbi_sock *, struct sk_buff *); 516 u32 (*csk_send_rx_credits)(struct cxgbi_sock *, u32); 517 int (*csk_push_tx_frames)(struct cxgbi_sock *, int); 518 void (*csk_send_abort_req)(struct cxgbi_sock *); 519 void (*csk_send_close_req)(struct cxgbi_sock *); 520 int (*csk_alloc_cpls)(struct cxgbi_sock *); 521 int (*csk_init_act_open)(struct cxgbi_sock *); 522 523 void *dd_data; 524 }; 525 #define cxgbi_cdev_priv(cdev) ((cdev)->dd_data) 526 527 struct cxgbi_conn { 528 struct cxgbi_endpoint *cep; 529 struct iscsi_conn *iconn; 530 struct cxgbi_hba *chba; 531 u32 task_idx_bits; 532 unsigned int ddp_full; 533 unsigned int ddp_tag_full; 534 }; 535 536 struct cxgbi_endpoint { 537 struct cxgbi_conn *cconn; 538 struct cxgbi_hba *chba; 539 struct cxgbi_sock *csk; 540 }; 541 542 struct cxgbi_task_data { 543 #define CXGBI_TASK_SGL_CHECKED 0x1 544 #define CXGBI_TASK_SGL_COPY 0x2 545 u8 flags; 546 unsigned short nr_frags; 547 struct page_frag frags[MAX_SKB_FRAGS]; 548 struct sk_buff *skb; 549 unsigned int dlen; 550 unsigned int offset; 551 unsigned int count; 552 unsigned int sgoffset; 553 u32 total_count; 554 u32 total_offset; 555 u32 max_xmit_dlength; 556 struct cxgbi_task_tag_info ttinfo; 557 }; 558 #define iscsi_task_cxgbi_data(task) \ 559 ((task)->dd_data + sizeof(struct iscsi_tcp_task)) 560 561 struct cxgbi_iso_info { 562 #define CXGBI_ISO_INFO_FSLICE 0x1 563 #define CXGBI_ISO_INFO_LSLICE 0x2 564 #define CXGBI_ISO_INFO_IMM_ENABLE 0x4 565 u8 flags; 566 u8 op; 567 u8 ahs; 568 u8 num_pdu; 569 u32 mpdu; 570 u32 burst_size; 571 u32 len; 572 u32 segment_offset; 573 u32 datasn_offset; 574 u32 buffer_offset; 575 }; 576 577 static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba *chba, __be32 ipaddr) 578 { 579 if (chba->cdev->flags & CXGBI_FLAG_IPV4_SET) 580 chba->ipv4addr = ipaddr; 581 else 582 pr_info("set iscsi ipv4 NOT supported, using %s ipv4.\n", 583 chba->ndev->name); 584 } 585 586 struct cxgbi_device *cxgbi_device_register(unsigned int, unsigned int); 587 void cxgbi_device_unregister(struct cxgbi_device *); 588 void cxgbi_device_unregister_all(unsigned int flag); 589 struct cxgbi_device *cxgbi_device_find_by_lldev(void *); 590 struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *, int *); 591 struct cxgbi_device *cxgbi_device_find_by_netdev_rcu(struct net_device *, 592 int *); 593 int cxgbi_hbas_add(struct cxgbi_device *, u64, unsigned int, 594 const struct scsi_host_template *, 595 struct scsi_transport_template *); 596 void cxgbi_hbas_remove(struct cxgbi_device *); 597 598 int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base, 599 unsigned int max_conn); 600 void cxgbi_device_portmap_cleanup(struct cxgbi_device *cdev); 601 602 void cxgbi_conn_tx_open(struct cxgbi_sock *); 603 void cxgbi_conn_pdu_ready(struct cxgbi_sock *); 604 int cxgbi_conn_alloc_pdu(struct iscsi_task *, u8); 605 int cxgbi_conn_init_pdu(struct iscsi_task *, unsigned int , unsigned int); 606 int cxgbi_conn_xmit_pdu(struct iscsi_task *); 607 608 void cxgbi_cleanup_task(struct iscsi_task *task); 609 610 umode_t cxgbi_attr_is_visible(int param_type, int param); 611 void cxgbi_get_conn_stats(struct iscsi_cls_conn *, struct iscsi_stats *); 612 int cxgbi_set_conn_param(struct iscsi_cls_conn *, 613 enum iscsi_param, char *, int); 614 int cxgbi_get_ep_param(struct iscsi_endpoint *ep, enum iscsi_param, char *); 615 struct iscsi_cls_conn *cxgbi_create_conn(struct iscsi_cls_session *, u32); 616 int cxgbi_bind_conn(struct iscsi_cls_session *, 617 struct iscsi_cls_conn *, u64, int); 618 void cxgbi_destroy_session(struct iscsi_cls_session *); 619 struct iscsi_cls_session *cxgbi_create_session(struct iscsi_endpoint *, 620 u16, u16, u32); 621 int cxgbi_set_host_param(struct Scsi_Host *, 622 enum iscsi_host_param, char *, int); 623 int cxgbi_get_host_param(struct Scsi_Host *, enum iscsi_host_param, char *); 624 struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *, 625 struct sockaddr *, int); 626 int cxgbi_ep_poll(struct iscsi_endpoint *, int); 627 void cxgbi_ep_disconnect(struct iscsi_endpoint *); 628 629 int cxgbi_iscsi_init(struct iscsi_transport *, 630 struct scsi_transport_template **); 631 void cxgbi_iscsi_cleanup(struct iscsi_transport *, 632 struct scsi_transport_template **); 633 void cxgbi_parse_pdu_itt(struct iscsi_conn *, itt_t, int *, int *); 634 int cxgbi_ddp_init(struct cxgbi_device *, unsigned int, unsigned int, 635 unsigned int, unsigned int); 636 int cxgbi_ddp_cleanup(struct cxgbi_device *); 637 void cxgbi_ddp_page_size_factor(int *); 638 void cxgbi_ddp_set_one_ppod(struct cxgbi_pagepod *, 639 struct cxgbi_task_tag_info *, 640 struct scatterlist **sg_pp, unsigned int *sg_off); 641 int cxgbi_ddp_ppm_setup(void **ppm_pp, struct cxgbi_device *cdev, 642 struct cxgbi_tag_format *tformat, 643 unsigned int iscsi_size, unsigned int llimit, 644 unsigned int start, unsigned int rsvd_factor, 645 unsigned int edram_start, unsigned int edram_size); 646 #endif /*__LIBCXGBI_H__*/ 647