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 <linux/version.h> 28#include <scsi/scsi_device.h> 29#include <scsi/libiscsi_tcp.h> 30 31#include <libcxgb_ppm.h> 32 33enum cxgbi_dbg_flag { 34 CXGBI_DBG_ISCSI, 35 CXGBI_DBG_DDP, 36 CXGBI_DBG_TOE, 37 CXGBI_DBG_SOCK, 38 39 CXGBI_DBG_PDU_TX, 40 CXGBI_DBG_PDU_RX, 41 CXGBI_DBG_DEV, 42}; 43 44#define log_debug(level, fmt, ...) \ 45 do { \ 46 if (dbg_level & (level)) \ 47 pr_info(fmt, ##__VA_ARGS__); \ 48 } while (0) 49 50#define pr_info_ipaddr(fmt_trail, \ 51 addr1, addr2, args_trail...) \ 52do { \ 53 if (!((1 << CXGBI_DBG_SOCK) & dbg_level)) \ 54 break; \ 55 pr_info("%pISpc - %pISpc, " fmt_trail, \ 56 addr1, addr2, args_trail); \ 57} while (0) 58 59/* max. connections per adapter */ 60#define CXGBI_MAX_CONN 16384 61 62/* always allocate rooms for AHS */ 63#define SKB_TX_ISCSI_PDU_HEADER_MAX \ 64 (sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE) 65 66#define ISCSI_PDU_NONPAYLOAD_LEN 312 /* bhs(48) + ahs(256) + digest(8)*/ 67 68/* 69 * align pdu size to multiple of 512 for better performance 70 */ 71#define cxgbi_align_pdu_size(n) do { n = (n) & (~511); } while (0) 72 73#define ULP2_MODE_ISCSI 2 74 75#define ULP2_MAX_PKT_SIZE 16224 76#define ULP2_MAX_PDU_PAYLOAD \ 77 (ULP2_MAX_PKT_SIZE - ISCSI_PDU_NONPAYLOAD_LEN) 78 79#define CXGBI_ULP2_MAX_ISO_PAYLOAD 65535 80 81#define CXGBI_MAX_ISO_DATA_IN_SKB \ 82 min_t(u32, MAX_SKB_FRAGS << PAGE_SHIFT, CXGBI_ULP2_MAX_ISO_PAYLOAD) 83 84#define cxgbi_is_iso_config(csk) ((csk)->cdev->skb_iso_txhdr) 85#define cxgbi_is_iso_disabled(csk) ((csk)->disable_iso) 86 87/* 88 * For iscsi connections HW may inserts digest bytes into the pdu. Those digest 89 * bytes are not sent by the host but are part of the TCP payload and therefore 90 * consume TCP sequence space. 91 */ 92static const unsigned int ulp2_extra_len[] = { 0, 4, 4, 8 }; 93static inline unsigned int cxgbi_ulp_extra_len(int submode) 94{ 95 return ulp2_extra_len[submode & 3]; 96} 97 98#define CPL_RX_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */ 99#define CPL_RX_DDP_STATUS_PAD_SHIFT 19 /* pad error */ 100#define CPL_RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */ 101#define CPL_RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */ 102 103/* 104 * sge_opaque_hdr - 105 * Opaque version of structure the SGE stores at skb->head of TX_DATA packets 106 * and for which we must reserve space. 107 */ 108struct sge_opaque_hdr { 109 void *dev; 110 dma_addr_t addr[MAX_SKB_FRAGS + 1]; 111}; 112 113struct cxgbi_sock { 114 struct cxgbi_device *cdev; 115 116 int tid; 117 int atid; 118 unsigned long flags; 119 unsigned int mtu; 120 unsigned short rss_qid; 121 unsigned short txq_idx; 122 unsigned short advmss; 123 unsigned int tx_chan; 124 unsigned int rx_chan; 125 unsigned int mss_idx; 126 unsigned int smac_idx; 127 unsigned char port_id; 128 int wr_max_cred; 129 int wr_cred; 130 int wr_una_cred; 131#ifdef CONFIG_CHELSIO_T4_DCB 132 u8 dcb_priority; 133#endif 134 unsigned char hcrc_len; 135 unsigned char dcrc_len; 136 137 void *l2t; 138 struct sk_buff *wr_pending_head; 139 struct sk_buff *wr_pending_tail; 140 struct sk_buff *cpl_close; 141 struct sk_buff *cpl_abort_req; 142 struct sk_buff *cpl_abort_rpl; 143 struct sk_buff *skb_ulp_lhdr; 144 spinlock_t lock; 145 struct kref refcnt; 146 unsigned int state; 147 unsigned int csk_family; 148 union { 149 struct sockaddr_in saddr; 150 struct sockaddr_in6 saddr6; 151 }; 152 union { 153 struct sockaddr_in daddr; 154 struct sockaddr_in6 daddr6; 155 }; 156 struct dst_entry *dst; 157 struct sk_buff_head receive_queue; 158 struct sk_buff_head write_queue; 159 struct timer_list retry_timer; 160 struct completion cmpl; 161 int err; 162 rwlock_t callback_lock; 163 void *user_data; 164 165 u32 rcv_nxt; 166 u32 copied_seq; 167 u32 rcv_wup; 168 u32 snd_nxt; 169 u32 snd_una; 170 u32 write_seq; 171 u32 snd_win; 172 u32 rcv_win; 173 174 bool disable_iso; 175 u32 no_tx_credits; 176 unsigned long prev_iso_ts; 177}; 178 179/* 180 * connection states 181 */ 182enum cxgbi_sock_states{ 183 CTP_CLOSED, 184 CTP_CONNECTING, 185 CTP_ACTIVE_OPEN, 186 CTP_ESTABLISHED, 187 CTP_ACTIVE_CLOSE, 188 CTP_PASSIVE_CLOSE, 189 CTP_CLOSE_WAIT_1, 190 CTP_CLOSE_WAIT_2, 191 CTP_ABORTING, 192}; 193 194/* 195 * Connection flags -- many to track some close related events. 196 */ 197enum cxgbi_sock_flags { 198 CTPF_ABORT_RPL_RCVD, /*received one ABORT_RPL_RSS message */ 199 CTPF_ABORT_REQ_RCVD, /*received one ABORT_REQ_RSS message */ 200 CTPF_ABORT_RPL_PENDING, /* expecting an abort reply */ 201 CTPF_TX_DATA_SENT, /* already sent a TX_DATA WR */ 202 CTPF_ACTIVE_CLOSE_NEEDED,/* need to be closed */ 203 CTPF_HAS_ATID, /* reserved atid */ 204 CTPF_HAS_TID, /* reserved hw tid */ 205 CTPF_OFFLOAD_DOWN, /* offload function off */ 206 CTPF_LOGOUT_RSP_RCVD, /* received logout response */ 207}; 208 209struct cxgbi_skb_rx_cb { 210 __u32 ddigest; 211 __u32 pdulen; 212}; 213 214struct cxgbi_skb_tx_cb { 215 void *handle; 216 void *arp_err_handler; 217 struct sk_buff *wr_next; 218 u16 iscsi_hdr_len; 219 u8 ulp_mode; 220}; 221 222enum cxgbi_skcb_flags { 223 SKCBF_TX_NEED_HDR, /* packet needs a header */ 224 SKCBF_TX_MEM_WRITE, /* memory write */ 225 SKCBF_TX_FLAG_COMPL, /* wr completion flag */ 226 SKCBF_RX_COALESCED, /* received whole pdu */ 227 SKCBF_RX_HDR, /* received pdu header */ 228 SKCBF_RX_DATA, /* received pdu payload */ 229 SKCBF_RX_STATUS, /* received ddp status */ 230 SKCBF_RX_ISCSI_COMPL, /* received iscsi completion */ 231 SKCBF_RX_DATA_DDPD, /* pdu payload ddp'd */ 232 SKCBF_RX_HCRC_ERR, /* header digest error */ 233 SKCBF_RX_DCRC_ERR, /* data digest error */ 234 SKCBF_RX_PAD_ERR, /* padding byte error */ 235 SKCBF_TX_ISO, /* iso cpl in tx skb */ 236}; 237 238struct cxgbi_skb_cb { 239 union { 240 struct cxgbi_skb_rx_cb rx; 241 struct cxgbi_skb_tx_cb tx; 242 }; 243 unsigned long flags; 244 unsigned int seq; 245}; 246 247#define CXGBI_SKB_CB(skb) ((struct cxgbi_skb_cb *)&((skb)->cb[0])) 248#define cxgbi_skcb_flags(skb) (CXGBI_SKB_CB(skb)->flags) 249#define cxgbi_skcb_tcp_seq(skb) (CXGBI_SKB_CB(skb)->seq) 250#define cxgbi_skcb_rx_ddigest(skb) (CXGBI_SKB_CB(skb)->rx.ddigest) 251#define cxgbi_skcb_rx_pdulen(skb) (CXGBI_SKB_CB(skb)->rx.pdulen) 252#define cxgbi_skcb_tx_wr_next(skb) (CXGBI_SKB_CB(skb)->tx.wr_next) 253#define cxgbi_skcb_tx_iscsi_hdrlen(skb) (CXGBI_SKB_CB(skb)->tx.iscsi_hdr_len) 254#define cxgbi_skcb_tx_ulp_mode(skb) (CXGBI_SKB_CB(skb)->tx.ulp_mode) 255 256static inline void cxgbi_skcb_set_flag(struct sk_buff *skb, 257 enum cxgbi_skcb_flags flag) 258{ 259 __set_bit(flag, &(cxgbi_skcb_flags(skb))); 260} 261 262static inline void cxgbi_skcb_clear_flag(struct sk_buff *skb, 263 enum cxgbi_skcb_flags flag) 264{ 265 __clear_bit(flag, &(cxgbi_skcb_flags(skb))); 266} 267 268static inline int cxgbi_skcb_test_flag(const struct sk_buff *skb, 269 enum cxgbi_skcb_flags flag) 270{ 271 return test_bit(flag, &(cxgbi_skcb_flags(skb))); 272} 273 274static inline void cxgbi_sock_set_flag(struct cxgbi_sock *csk, 275 enum cxgbi_sock_flags flag) 276{ 277 __set_bit(flag, &csk->flags); 278 log_debug(1 << CXGBI_DBG_SOCK, 279 "csk 0x%p,%u,0x%lx, bit %d.\n", 280 csk, csk->state, csk->flags, flag); 281} 282 283static inline void cxgbi_sock_clear_flag(struct cxgbi_sock *csk, 284 enum cxgbi_sock_flags flag) 285{ 286 __clear_bit(flag, &csk->flags); 287 log_debug(1 << CXGBI_DBG_SOCK, 288 "csk 0x%p,%u,0x%lx, bit %d.\n", 289 csk, csk->state, csk->flags, flag); 290} 291 292static inline int cxgbi_sock_flag(struct cxgbi_sock *csk, 293 enum cxgbi_sock_flags flag) 294{ 295 if (csk == NULL) 296 return 0; 297 return test_bit(flag, &csk->flags); 298} 299 300static inline void cxgbi_sock_set_state(struct cxgbi_sock *csk, int state) 301{ 302 log_debug(1 << CXGBI_DBG_SOCK, 303 "csk 0x%p,%u,0x%lx, state -> %u.\n", 304 csk, csk->state, csk->flags, state); 305 csk->state = state; 306} 307 308static inline void cxgbi_sock_free(struct kref *kref) 309{ 310 struct cxgbi_sock *csk = container_of(kref, 311 struct cxgbi_sock, 312 refcnt); 313 if (csk) { 314 log_debug(1 << CXGBI_DBG_SOCK, 315 "free csk 0x%p, state %u, flags 0x%lx\n", 316 csk, csk->state, csk->flags); 317 kfree(csk); 318 } 319} 320 321static inline void __cxgbi_sock_put(const char *fn, struct cxgbi_sock *csk) 322{ 323 log_debug(1 << CXGBI_DBG_SOCK, 324 "%s, put csk 0x%p, ref %u-1.\n", 325 fn, csk, kref_read(&csk->refcnt)); 326 kref_put(&csk->refcnt, cxgbi_sock_free); 327} 328#define cxgbi_sock_put(csk) __cxgbi_sock_put(__func__, csk) 329 330static inline void __cxgbi_sock_get(const char *fn, struct cxgbi_sock *csk) 331{ 332 log_debug(1 << CXGBI_DBG_SOCK, 333 "%s, get csk 0x%p, ref %u+1.\n", 334 fn, csk, kref_read(&csk->refcnt)); 335 kref_get(&csk->refcnt); 336} 337#define cxgbi_sock_get(csk) __cxgbi_sock_get(__func__, csk) 338 339static inline int cxgbi_sock_is_closing(struct cxgbi_sock *csk) 340{ 341 return csk->state >= CTP_ACTIVE_CLOSE; 342} 343 344static inline int cxgbi_sock_is_established(struct cxgbi_sock *csk) 345{ 346 return csk->state == CTP_ESTABLISHED; 347} 348 349static inline void cxgbi_sock_purge_write_queue(struct cxgbi_sock *csk) 350{ 351 struct sk_buff *skb; 352 353 while ((skb = __skb_dequeue(&csk->write_queue))) 354 __kfree_skb(skb); 355} 356 357static inline unsigned int cxgbi_sock_compute_wscale(unsigned int win) 358{ 359 unsigned int wscale = 0; 360 361 while (wscale < 14 && (65535 << wscale) < win) 362 wscale++; 363 return wscale; 364} 365 366static inline struct sk_buff *alloc_wr(int wrlen, int dlen, gfp_t gfp) 367{ 368 struct sk_buff *skb = alloc_skb(wrlen + dlen, gfp); 369 370 if (skb) { 371 __skb_put(skb, wrlen); 372 memset(skb->head, 0, wrlen + dlen); 373 } else 374 pr_info("alloc cpl wr skb %u+%u, OOM.\n", wrlen, dlen); 375 return skb; 376} 377 378 379/* 380 * The number of WRs needed for an skb depends on the number of fragments 381 * in the skb and whether it has any payload in its main body. This maps the 382 * length of the gather list represented by an skb into the # of necessary WRs. 383 * The extra two fragments are for iscsi bhs and payload padding. 384 */ 385#define SKB_WR_LIST_SIZE (MAX_SKB_FRAGS + 2) 386 387static inline void cxgbi_sock_reset_wr_list(struct cxgbi_sock *csk) 388{ 389 csk->wr_pending_head = csk->wr_pending_tail = NULL; 390} 391 392static inline void cxgbi_sock_enqueue_wr(struct cxgbi_sock *csk, 393 struct sk_buff *skb) 394{ 395 cxgbi_skcb_tx_wr_next(skb) = NULL; 396 /* 397 * We want to take an extra reference since both us and the driver 398 * need to free the packet before it's really freed. 399 */ 400 skb_get(skb); 401 402 if (!csk->wr_pending_head) 403 csk->wr_pending_head = skb; 404 else 405 cxgbi_skcb_tx_wr_next(csk->wr_pending_tail) = skb; 406 csk->wr_pending_tail = skb; 407} 408 409static inline int cxgbi_sock_count_pending_wrs(const struct cxgbi_sock *csk) 410{ 411 int n = 0; 412 const struct sk_buff *skb = csk->wr_pending_head; 413 414 while (skb) { 415 n += skb->csum; 416 skb = cxgbi_skcb_tx_wr_next(skb); 417 } 418 return n; 419} 420 421static inline struct sk_buff *cxgbi_sock_peek_wr(const struct cxgbi_sock *csk) 422{ 423 return csk->wr_pending_head; 424} 425 426static inline struct sk_buff *cxgbi_sock_dequeue_wr(struct cxgbi_sock *csk) 427{ 428 struct sk_buff *skb = csk->wr_pending_head; 429 430 if (likely(skb)) { 431 csk->wr_pending_head = cxgbi_skcb_tx_wr_next(skb); 432 cxgbi_skcb_tx_wr_next(skb) = NULL; 433 } 434 return skb; 435} 436 437void cxgbi_sock_check_wr_invariants(const struct cxgbi_sock *); 438void cxgbi_sock_purge_wr_queue(struct cxgbi_sock *); 439void cxgbi_sock_skb_entail(struct cxgbi_sock *, struct sk_buff *); 440void cxgbi_sock_fail_act_open(struct cxgbi_sock *, int); 441void cxgbi_sock_act_open_req_arp_failure(void *, struct sk_buff *); 442void cxgbi_sock_closed(struct cxgbi_sock *); 443void cxgbi_sock_established(struct cxgbi_sock *, unsigned int, unsigned int); 444void cxgbi_sock_rcv_abort_rpl(struct cxgbi_sock *); 445void cxgbi_sock_rcv_peer_close(struct cxgbi_sock *); 446void cxgbi_sock_rcv_close_conn_rpl(struct cxgbi_sock *, u32); 447void cxgbi_sock_rcv_wr_ack(struct cxgbi_sock *, unsigned int, unsigned int, 448 int); 449unsigned int cxgbi_sock_select_mss(struct cxgbi_sock *, unsigned int); 450void cxgbi_sock_free_cpl_skbs(struct cxgbi_sock *); 451 452struct cxgbi_hba { 453 struct net_device *ndev; 454 struct net_device *vdev; /* vlan dev */ 455 struct Scsi_Host *shost; 456 struct cxgbi_device *cdev; 457 __be32 ipv4addr; 458 unsigned char port_id; 459}; 460 461struct cxgbi_ports_map { 462 unsigned int max_connect; 463 unsigned int used; 464 unsigned short sport_base; 465 spinlock_t lock; 466 unsigned int next; 467 struct cxgbi_sock **port_csk; 468}; 469 470#define CXGBI_FLAG_DEV_T3 0x1 471#define CXGBI_FLAG_DEV_T4 0x2 472#define CXGBI_FLAG_ADAPTER_RESET 0x4 473#define CXGBI_FLAG_IPV4_SET 0x10 474#define CXGBI_FLAG_USE_PPOD_OFLDQ 0x40 475#define CXGBI_FLAG_DDP_OFF 0x100 476#define CXGBI_FLAG_DEV_ISO_OFF 0x400 477 478struct cxgbi_device { 479 struct list_head list_head; 480 struct list_head rcu_node; 481 unsigned int flags; 482 struct net_device **ports; 483 void *lldev; 484 struct cxgbi_hba **hbas; 485 const unsigned short *mtus; 486 unsigned char nmtus; 487 unsigned char nports; 488 struct pci_dev *pdev; 489 struct dentry *debugfs_root; 490 struct iscsi_transport *itp; 491 struct module *owner; 492 493 unsigned int pfvf; 494 unsigned int rx_credit_thres; 495 unsigned int skb_tx_rsvd; 496 u32 skb_iso_txhdr; 497 unsigned int skb_rx_extra; /* for msg coalesced mode */ 498 unsigned int tx_max_size; 499 unsigned int rx_max_size; 500 unsigned int rxq_idx_cntr; 501 struct cxgbi_ports_map pmap; 502 503 void (*dev_ddp_cleanup)(struct cxgbi_device *); 504 struct cxgbi_ppm* (*cdev2ppm)(struct cxgbi_device *); 505 int (*csk_ddp_set_map)(struct cxgbi_ppm *, struct cxgbi_sock *, 506 struct cxgbi_task_tag_info *); 507 void (*csk_ddp_clear_map)(struct cxgbi_device *cdev, 508 struct cxgbi_ppm *, 509 struct cxgbi_task_tag_info *); 510 int (*csk_ddp_setup_digest)(struct cxgbi_sock *, 511 unsigned int, int, int); 512 int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *, 513 unsigned int, int); 514 515 void (*csk_release_offload_resources)(struct cxgbi_sock *); 516 int (*csk_rx_pdu_ready)(struct cxgbi_sock *, struct sk_buff *); 517 u32 (*csk_send_rx_credits)(struct cxgbi_sock *, u32); 518 int (*csk_push_tx_frames)(struct cxgbi_sock *, int); 519 void (*csk_send_abort_req)(struct cxgbi_sock *); 520 void (*csk_send_close_req)(struct cxgbi_sock *); 521 int (*csk_alloc_cpls)(struct cxgbi_sock *); 522 int (*csk_init_act_open)(struct cxgbi_sock *); 523 524 void *dd_data; 525}; 526#define cxgbi_cdev_priv(cdev) ((cdev)->dd_data) 527 528struct cxgbi_conn { 529 struct cxgbi_endpoint *cep; 530 struct iscsi_conn *iconn; 531 struct cxgbi_hba *chba; 532 u32 task_idx_bits; 533 unsigned int ddp_full; 534 unsigned int ddp_tag_full; 535}; 536 537struct cxgbi_endpoint { 538 struct cxgbi_conn *cconn; 539 struct cxgbi_hba *chba; 540 struct cxgbi_sock *csk; 541}; 542 543struct cxgbi_task_data { 544#define CXGBI_TASK_SGL_CHECKED 0x1 545#define CXGBI_TASK_SGL_COPY 0x2 546 u8 flags; 547 unsigned short nr_frags; 548 struct page_frag frags[MAX_SKB_FRAGS]; 549 struct sk_buff *skb; 550 unsigned int dlen; 551 unsigned int offset; 552 unsigned int count; 553 unsigned int sgoffset; 554 u32 total_count; 555 u32 total_offset; 556 u32 max_xmit_dlength; 557 struct cxgbi_task_tag_info ttinfo; 558}; 559#define iscsi_task_cxgbi_data(task) \ 560 ((task)->dd_data + sizeof(struct iscsi_tcp_task)) 561 562struct cxgbi_iso_info { 563#define CXGBI_ISO_INFO_FSLICE 0x1 564#define CXGBI_ISO_INFO_LSLICE 0x2 565#define CXGBI_ISO_INFO_IMM_ENABLE 0x4 566 u8 flags; 567 u8 op; 568 u8 ahs; 569 u8 num_pdu; 570 u32 mpdu; 571 u32 burst_size; 572 u32 len; 573 u32 segment_offset; 574 u32 datasn_offset; 575 u32 buffer_offset; 576}; 577 578static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba *chba, __be32 ipaddr) 579{ 580 if (chba->cdev->flags & CXGBI_FLAG_IPV4_SET) 581 chba->ipv4addr = ipaddr; 582 else 583 pr_info("set iscsi ipv4 NOT supported, using %s ipv4.\n", 584 chba->ndev->name); 585} 586 587struct cxgbi_device *cxgbi_device_register(unsigned int, unsigned int); 588void cxgbi_device_unregister(struct cxgbi_device *); 589void cxgbi_device_unregister_all(unsigned int flag); 590struct cxgbi_device *cxgbi_device_find_by_lldev(void *); 591struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *, int *); 592struct cxgbi_device *cxgbi_device_find_by_netdev_rcu(struct net_device *, 593 int *); 594int cxgbi_hbas_add(struct cxgbi_device *, u64, unsigned int, 595 struct scsi_host_template *, 596 struct scsi_transport_template *); 597void cxgbi_hbas_remove(struct cxgbi_device *); 598 599int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base, 600 unsigned int max_conn); 601void cxgbi_device_portmap_cleanup(struct cxgbi_device *cdev); 602 603void cxgbi_conn_tx_open(struct cxgbi_sock *); 604void cxgbi_conn_pdu_ready(struct cxgbi_sock *); 605int cxgbi_conn_alloc_pdu(struct iscsi_task *, u8); 606int cxgbi_conn_init_pdu(struct iscsi_task *, unsigned int , unsigned int); 607int cxgbi_conn_xmit_pdu(struct iscsi_task *); 608 609void cxgbi_cleanup_task(struct iscsi_task *task); 610 611umode_t cxgbi_attr_is_visible(int param_type, int param); 612void cxgbi_get_conn_stats(struct iscsi_cls_conn *, struct iscsi_stats *); 613int cxgbi_set_conn_param(struct iscsi_cls_conn *, 614 enum iscsi_param, char *, int); 615int cxgbi_get_ep_param(struct iscsi_endpoint *ep, enum iscsi_param, char *); 616struct iscsi_cls_conn *cxgbi_create_conn(struct iscsi_cls_session *, u32); 617int cxgbi_bind_conn(struct iscsi_cls_session *, 618 struct iscsi_cls_conn *, u64, int); 619void cxgbi_destroy_session(struct iscsi_cls_session *); 620struct iscsi_cls_session *cxgbi_create_session(struct iscsi_endpoint *, 621 u16, u16, u32); 622int cxgbi_set_host_param(struct Scsi_Host *, 623 enum iscsi_host_param, char *, int); 624int cxgbi_get_host_param(struct Scsi_Host *, enum iscsi_host_param, char *); 625struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *, 626 struct sockaddr *, int); 627int cxgbi_ep_poll(struct iscsi_endpoint *, int); 628void cxgbi_ep_disconnect(struct iscsi_endpoint *); 629 630int cxgbi_iscsi_init(struct iscsi_transport *, 631 struct scsi_transport_template **); 632void cxgbi_iscsi_cleanup(struct iscsi_transport *, 633 struct scsi_transport_template **); 634void cxgbi_parse_pdu_itt(struct iscsi_conn *, itt_t, int *, int *); 635int cxgbi_ddp_init(struct cxgbi_device *, unsigned int, unsigned int, 636 unsigned int, unsigned int); 637int cxgbi_ddp_cleanup(struct cxgbi_device *); 638void cxgbi_ddp_page_size_factor(int *); 639void cxgbi_ddp_set_one_ppod(struct cxgbi_pagepod *, 640 struct cxgbi_task_tag_info *, 641 struct scatterlist **sg_pp, unsigned int *sg_off); 642int cxgbi_ddp_ppm_setup(void **ppm_pp, struct cxgbi_device *cdev, 643 struct cxgbi_tag_format *tformat, 644 unsigned int iscsi_size, unsigned int llimit, 645 unsigned int start, unsigned int rsvd_factor, 646 unsigned int edram_start, unsigned int edram_size); 647#endif /*__LIBCXGBI_H__*/ 648