2 * libcxgbi.h: Chelsio common library for T3/T4 iSCSI driver.
4 * Copyright (c) 2010 Chelsio Communications, Inc.
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.
10 * Written by: Karen Xie (kxie@chelsio.com)
11 * Written by: Rakesh Ranjan (rranjan@chelsio.com)
14 #ifndef __LIBCXGBI_H__
15 #define __LIBCXGBI_H__
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>
41 #define log_debug(level, fmt, ...) \
43 if (dbg_level & (level)) \
44 pr_info(fmt, ##__VA_ARGS__); \
47 /* max. connections per adapter */
48 #define CXGBI_MAX_CONN 16384
50 /* always allocate rooms for AHS */
51 #define SKB_TX_ISCSI_PDU_HEADER_MAX \
52 (sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE)
54 #define ISCSI_PDU_NONPAYLOAD_LEN 312 /* bhs(48) + ahs(256) + digest(8)*/
57 * align pdu size to multiple of 512 for better performance
59 #define cxgbi_align_pdu_size(n) do { n = (n) & (~511); } while (0)
61 #define ULP2_MODE_ISCSI 2
63 #define ULP2_MAX_PKT_SIZE 16224
64 #define ULP2_MAX_PDU_PAYLOAD \
65 (ULP2_MAX_PKT_SIZE - ISCSI_PDU_NONPAYLOAD_LEN)
68 * For iscsi connections HW may inserts digest bytes into the pdu. Those digest
69 * bytes are not sent by the host but are part of the TCP payload and therefore
70 * consume TCP sequence space.
72 static const unsigned int ulp2_extra_len[] = { 0, 4, 4, 8 };
73 static inline unsigned int cxgbi_ulp_extra_len(int submode)
75 return ulp2_extra_len[submode & 3];
79 * struct pagepod_hdr, pagepod - pagepod format
82 #define CPL_RX_DDP_STATUS_DDP_SHIFT 16 /* ddp'able */
83 #define CPL_RX_DDP_STATUS_PAD_SHIFT 19 /* pad error */
84 #define CPL_RX_DDP_STATUS_HCRC_SHIFT 20 /* hcrc error */
85 #define CPL_RX_DDP_STATUS_DCRC_SHIFT 21 /* dcrc error */
87 struct cxgbi_pagepod_hdr {
95 #define PPOD_PAGES_MAX 4
96 struct cxgbi_pagepod {
97 struct cxgbi_pagepod_hdr hdr;
98 u64 addr[PPOD_PAGES_MAX + 1];
101 struct cxgbi_tag_format {
102 unsigned char sw_bits;
103 unsigned char rsvd_bits;
104 unsigned char rsvd_shift;
105 unsigned char filler[1];
109 struct cxgbi_gather_list {
115 dma_addr_t phys_addr[0];
118 struct cxgbi_ddp_info {
120 struct cxgbi_device *cdev;
121 struct pci_dev *pdev;
122 unsigned int max_txsz;
123 unsigned int max_rxsz;
127 unsigned int idx_last;
128 unsigned char idx_bits;
129 unsigned char filler[3];
130 unsigned int idx_mask;
131 unsigned int rsvd_tag_mask;
133 struct cxgbi_gather_list **gl_map;
134 struct sk_buff **gl_skb;
137 #define DDP_PGIDX_MAX 4
138 #define DDP_THRESHOLD 2048
140 #define PPOD_PAGES_SHIFT 2 /* 4 pages per pod */
142 #define PPOD_SIZE sizeof(struct cxgbi_pagepod) /* 64 */
143 #define PPOD_SIZE_SHIFT 6
145 #define ULPMEM_DSGL_MAX_NPPODS 16 /* 1024/PPOD_SIZE */
146 #define ULPMEM_IDATA_MAX_NPPODS 4 /* 256/PPOD_SIZE */
147 #define PCIE_MEMWIN_MAX_NPPODS 16 /* 1024/PPOD_SIZE */
149 #define PPOD_COLOR_SHIFT 0
150 #define PPOD_COLOR(x) ((x) << PPOD_COLOR_SHIFT)
152 #define PPOD_IDX_SHIFT 6
153 #define PPOD_IDX_MAX_SIZE 24
155 #define PPOD_TID_SHIFT 0
156 #define PPOD_TID(x) ((x) << PPOD_TID_SHIFT)
158 #define PPOD_TAG_SHIFT 6
159 #define PPOD_TAG(x) ((x) << PPOD_TAG_SHIFT)
161 #define PPOD_VALID_SHIFT 24
162 #define PPOD_VALID(x) ((x) << PPOD_VALID_SHIFT)
163 #define PPOD_VALID_FLAG PPOD_VALID(1U)
165 #define W_TCB_ULP_TYPE 0
166 #define TCB_ULP_TYPE_SHIFT 0
167 #define TCB_ULP_TYPE_MASK 0xfULL
168 #define TCB_ULP_TYPE(x) ((x) << TCB_ULP_TYPE_SHIFT)
170 #define W_TCB_ULP_RAW 0
171 #define TCB_ULP_RAW_SHIFT 4
172 #define TCB_ULP_RAW_MASK 0xffULL
173 #define TCB_ULP_RAW(x) ((x) << TCB_ULP_RAW_SHIFT)
177 * Opaque version of structure the SGE stores at skb->head of TX_DATA packets
178 * and for which we must reserve space.
180 struct sge_opaque_hdr {
182 dma_addr_t addr[MAX_SKB_FRAGS + 1];
186 struct cxgbi_device *cdev;
192 unsigned short rss_qid;
193 unsigned short txq_idx;
194 unsigned short advmss;
195 unsigned int tx_chan;
196 unsigned int rx_chan;
197 unsigned int mss_idx;
198 unsigned int smac_idx;
199 unsigned char port_id;
203 unsigned char hcrc_len;
204 unsigned char dcrc_len;
207 struct sk_buff *wr_pending_head;
208 struct sk_buff *wr_pending_tail;
209 struct sk_buff *cpl_close;
210 struct sk_buff *cpl_abort_req;
211 struct sk_buff *cpl_abort_rpl;
212 struct sk_buff *skb_ulp_lhdr;
216 struct sockaddr_in saddr;
217 struct sockaddr_in daddr;
218 struct dst_entry *dst;
219 struct sk_buff_head receive_queue;
220 struct sk_buff_head write_queue;
221 struct timer_list retry_timer;
223 rwlock_t callback_lock;
237 enum cxgbi_sock_states{
250 * Connection flags -- many to track some close related events.
252 enum cxgbi_sock_flags {
253 CTPF_ABORT_RPL_RCVD, /*received one ABORT_RPL_RSS message */
254 CTPF_ABORT_REQ_RCVD, /*received one ABORT_REQ_RSS message */
255 CTPF_ABORT_RPL_PENDING, /* expecting an abort reply */
256 CTPF_TX_DATA_SENT, /* already sent a TX_DATA WR */
257 CTPF_ACTIVE_CLOSE_NEEDED,/* need to be closed */
258 CTPF_HAS_ATID, /* reserved atid */
259 CTPF_HAS_TID, /* reserved hw tid */
260 CTPF_OFFLOAD_DOWN, /* offload function off */
263 struct cxgbi_skb_rx_cb {
268 struct cxgbi_skb_tx_cb {
270 struct sk_buff *wr_next;
273 enum cxgbi_skcb_flags {
274 SKCBF_TX_NEED_HDR, /* packet needs a header */
275 SKCBF_RX_COALESCED, /* received whole pdu */
276 SKCBF_RX_HDR, /* recieved pdu header */
277 SKCBF_RX_DATA, /* recieved pdu payload */
278 SKCBF_RX_STATUS, /* recieved ddp status */
279 SKCBF_RX_DATA_DDPD, /* pdu payload ddp'd */
280 SKCBF_RX_HCRC_ERR, /* header digest error */
281 SKCBF_RX_DCRC_ERR, /* data digest error */
282 SKCBF_RX_PAD_ERR, /* padding byte error */
285 struct cxgbi_skb_cb {
286 unsigned char ulp_mode;
290 struct cxgbi_skb_rx_cb rx;
291 struct cxgbi_skb_tx_cb tx;
295 #define CXGBI_SKB_CB(skb) ((struct cxgbi_skb_cb *)&((skb)->cb[0]))
296 #define cxgbi_skcb_flags(skb) (CXGBI_SKB_CB(skb)->flags)
297 #define cxgbi_skcb_ulp_mode(skb) (CXGBI_SKB_CB(skb)->ulp_mode)
298 #define cxgbi_skcb_tcp_seq(skb) (CXGBI_SKB_CB(skb)->seq)
299 #define cxgbi_skcb_rx_ddigest(skb) (CXGBI_SKB_CB(skb)->rx.ddigest)
300 #define cxgbi_skcb_rx_pdulen(skb) (CXGBI_SKB_CB(skb)->rx.pdulen)
301 #define cxgbi_skcb_tx_wr_next(skb) (CXGBI_SKB_CB(skb)->tx.wr_next)
303 static inline void cxgbi_skcb_set_flag(struct sk_buff *skb,
304 enum cxgbi_skcb_flags flag)
306 __set_bit(flag, &(cxgbi_skcb_flags(skb)));
309 static inline void cxgbi_skcb_clear_flag(struct sk_buff *skb,
310 enum cxgbi_skcb_flags flag)
312 __clear_bit(flag, &(cxgbi_skcb_flags(skb)));
315 static inline int cxgbi_skcb_test_flag(struct sk_buff *skb,
316 enum cxgbi_skcb_flags flag)
318 return test_bit(flag, &(cxgbi_skcb_flags(skb)));
321 static inline void cxgbi_sock_set_flag(struct cxgbi_sock *csk,
322 enum cxgbi_sock_flags flag)
324 __set_bit(flag, &csk->flags);
325 log_debug(1 << CXGBI_DBG_SOCK,
326 "csk 0x%p,%u,0x%lx, bit %d.\n",
327 csk, csk->state, csk->flags, flag);
330 static inline void cxgbi_sock_clear_flag(struct cxgbi_sock *csk,
331 enum cxgbi_sock_flags flag)
333 __clear_bit(flag, &csk->flags);
334 log_debug(1 << CXGBI_DBG_SOCK,
335 "csk 0x%p,%u,0x%lx, bit %d.\n",
336 csk, csk->state, csk->flags, flag);
339 static inline int cxgbi_sock_flag(struct cxgbi_sock *csk,
340 enum cxgbi_sock_flags flag)
344 return test_bit(flag, &csk->flags);
347 static inline void cxgbi_sock_set_state(struct cxgbi_sock *csk, int state)
349 log_debug(1 << CXGBI_DBG_SOCK,
350 "csk 0x%p,%u,0x%lx, state -> %u.\n",
351 csk, csk->state, csk->flags, state);
355 static inline void cxgbi_sock_free(struct kref *kref)
357 struct cxgbi_sock *csk = container_of(kref,
361 log_debug(1 << CXGBI_DBG_SOCK,
362 "free csk 0x%p, state %u, flags 0x%lx\n",
363 csk, csk->state, csk->flags);
368 static inline void __cxgbi_sock_put(const char *fn, struct cxgbi_sock *csk)
370 log_debug(1 << CXGBI_DBG_SOCK,
371 "%s, put csk 0x%p, ref %u-1.\n",
372 fn, csk, atomic_read(&csk->refcnt.refcount));
373 kref_put(&csk->refcnt, cxgbi_sock_free);
375 #define cxgbi_sock_put(csk) __cxgbi_sock_put(__func__, csk)
377 static inline void __cxgbi_sock_get(const char *fn, struct cxgbi_sock *csk)
379 log_debug(1 << CXGBI_DBG_SOCK,
380 "%s, get csk 0x%p, ref %u+1.\n",
381 fn, csk, atomic_read(&csk->refcnt.refcount));
382 kref_get(&csk->refcnt);
384 #define cxgbi_sock_get(csk) __cxgbi_sock_get(__func__, csk)
386 static inline int cxgbi_sock_is_closing(struct cxgbi_sock *csk)
388 return csk->state >= CTP_ACTIVE_CLOSE;
391 static inline int cxgbi_sock_is_established(struct cxgbi_sock *csk)
393 return csk->state == CTP_ESTABLISHED;
396 static inline void cxgbi_sock_purge_write_queue(struct cxgbi_sock *csk)
400 while ((skb = __skb_dequeue(&csk->write_queue)))
404 static inline unsigned int cxgbi_sock_compute_wscale(unsigned int win)
406 unsigned int wscale = 0;
408 while (wscale < 14 && (65535 << wscale) < win)
413 static inline struct sk_buff *alloc_wr(int wrlen, int dlen, gfp_t gfp)
415 struct sk_buff *skb = alloc_skb(wrlen + dlen, gfp);
418 __skb_put(skb, wrlen);
419 memset(skb->head, 0, wrlen + dlen);
421 pr_info("alloc cpl wr skb %u+%u, OOM.\n", wrlen, dlen);
427 * The number of WRs needed for an skb depends on the number of fragments
428 * in the skb and whether it has any payload in its main body. This maps the
429 * length of the gather list represented by an skb into the # of necessary WRs.
430 * The extra two fragments are for iscsi bhs and payload padding.
432 #define SKB_WR_LIST_SIZE (MAX_SKB_FRAGS + 2)
434 static inline void cxgbi_sock_reset_wr_list(struct cxgbi_sock *csk)
436 csk->wr_pending_head = csk->wr_pending_tail = NULL;
439 static inline void cxgbi_sock_enqueue_wr(struct cxgbi_sock *csk,
442 cxgbi_skcb_tx_wr_next(skb) = NULL;
444 * We want to take an extra reference since both us and the driver
445 * need to free the packet before it's really freed. We know there's
446 * just one user currently so we use atomic_set rather than skb_get
447 * to avoid the atomic op.
449 atomic_set(&skb->users, 2);
451 if (!csk->wr_pending_head)
452 csk->wr_pending_head = skb;
454 cxgbi_skcb_tx_wr_next(csk->wr_pending_tail) = skb;
455 csk->wr_pending_tail = skb;
458 static inline int cxgbi_sock_count_pending_wrs(const struct cxgbi_sock *csk)
461 const struct sk_buff *skb = csk->wr_pending_head;
465 skb = cxgbi_skcb_tx_wr_next(skb);
470 static inline struct sk_buff *cxgbi_sock_peek_wr(const struct cxgbi_sock *csk)
472 return csk->wr_pending_head;
475 static inline struct sk_buff *cxgbi_sock_dequeue_wr(struct cxgbi_sock *csk)
477 struct sk_buff *skb = csk->wr_pending_head;
480 csk->wr_pending_head = cxgbi_skcb_tx_wr_next(skb);
481 cxgbi_skcb_tx_wr_next(skb) = NULL;
486 void cxgbi_sock_check_wr_invariants(const struct cxgbi_sock *);
487 void cxgbi_sock_purge_wr_queue(struct cxgbi_sock *);
488 void cxgbi_sock_skb_entail(struct cxgbi_sock *, struct sk_buff *);
489 void cxgbi_sock_fail_act_open(struct cxgbi_sock *, int);
490 void cxgbi_sock_act_open_req_arp_failure(void *, struct sk_buff *);
491 void cxgbi_sock_closed(struct cxgbi_sock *);
492 void cxgbi_sock_established(struct cxgbi_sock *, unsigned int, unsigned int);
493 void cxgbi_sock_rcv_abort_rpl(struct cxgbi_sock *);
494 void cxgbi_sock_rcv_peer_close(struct cxgbi_sock *);
495 void cxgbi_sock_rcv_close_conn_rpl(struct cxgbi_sock *, u32);
496 void cxgbi_sock_rcv_wr_ack(struct cxgbi_sock *, unsigned int, unsigned int,
498 unsigned int cxgbi_sock_select_mss(struct cxgbi_sock *, unsigned int);
499 void cxgbi_sock_free_cpl_skbs(struct cxgbi_sock *);
502 struct net_device *ndev;
503 struct Scsi_Host *shost;
504 struct cxgbi_device *cdev;
506 unsigned char port_id;
509 struct cxgbi_ports_map {
510 unsigned int max_connect;
512 unsigned short sport_base;
515 struct cxgbi_sock **port_csk;
518 #define CXGBI_FLAG_DEV_T3 0x1
519 #define CXGBI_FLAG_DEV_T4 0x2
520 #define CXGBI_FLAG_ADAPTER_RESET 0x4
521 #define CXGBI_FLAG_IPV4_SET 0x10
522 struct cxgbi_device {
523 struct list_head list_head;
525 struct net_device **ports;
527 struct cxgbi_hba **hbas;
528 const unsigned short *mtus;
530 unsigned char nports;
531 struct pci_dev *pdev;
532 struct dentry *debugfs_root;
533 struct iscsi_transport *itp;
536 unsigned int snd_win;
537 unsigned int rcv_win;
538 unsigned int rx_credit_thres;
539 unsigned int skb_tx_rsvd;
540 unsigned int skb_rx_extra; /* for msg coalesced mode */
541 unsigned int tx_max_size;
542 unsigned int rx_max_size;
543 struct cxgbi_ports_map pmap;
544 struct cxgbi_tag_format tag_format;
545 struct cxgbi_ddp_info *ddp;
547 void (*dev_ddp_cleanup)(struct cxgbi_device *);
548 void (*csk_ddp_free_gl_skb)(struct cxgbi_ddp_info *, int, int);
549 int (*csk_ddp_alloc_gl_skb)(struct cxgbi_ddp_info *, int, int, gfp_t);
550 int (*csk_ddp_set)(struct cxgbi_sock *, struct cxgbi_pagepod_hdr *,
551 unsigned int, unsigned int,
552 struct cxgbi_gather_list *);
553 void (*csk_ddp_clear)(struct cxgbi_hba *,
554 unsigned int, unsigned int, unsigned int);
555 int (*csk_ddp_setup_digest)(struct cxgbi_sock *,
556 unsigned int, int, int, int);
557 int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *,
558 unsigned int, int, bool);
560 void (*csk_release_offload_resources)(struct cxgbi_sock *);
561 int (*csk_rx_pdu_ready)(struct cxgbi_sock *, struct sk_buff *);
562 u32 (*csk_send_rx_credits)(struct cxgbi_sock *, u32);
563 int (*csk_push_tx_frames)(struct cxgbi_sock *, int);
564 void (*csk_send_abort_req)(struct cxgbi_sock *);
565 void (*csk_send_close_req)(struct cxgbi_sock *);
566 int (*csk_alloc_cpls)(struct cxgbi_sock *);
567 int (*csk_init_act_open)(struct cxgbi_sock *);
571 #define cxgbi_cdev_priv(cdev) ((cdev)->dd_data)
574 struct cxgbi_endpoint *cep;
575 struct iscsi_conn *iconn;
576 struct cxgbi_hba *chba;
580 struct cxgbi_endpoint {
581 struct cxgbi_conn *cconn;
582 struct cxgbi_hba *chba;
583 struct cxgbi_sock *csk;
586 #define MAX_PDU_FRAGS ((ULP2_MAX_PDU_PAYLOAD + 512 - 1) / 512)
587 struct cxgbi_task_data {
588 unsigned short nr_frags;
589 skb_frag_t frags[MAX_PDU_FRAGS];
593 unsigned int sgoffset;
595 #define iscsi_task_cxgbi_data(task) \
596 ((task)->dd_data + sizeof(struct iscsi_tcp_task))
598 static inline int cxgbi_is_ddp_tag(struct cxgbi_tag_format *tformat, u32 tag)
600 return !(tag & (1 << (tformat->rsvd_bits + tformat->rsvd_shift - 1)));
603 static inline int cxgbi_sw_tag_usable(struct cxgbi_tag_format *tformat,
606 sw_tag >>= (32 - tformat->rsvd_bits);
610 static inline u32 cxgbi_set_non_ddp_tag(struct cxgbi_tag_format *tformat,
613 unsigned char shift = tformat->rsvd_bits + tformat->rsvd_shift - 1;
614 u32 mask = (1 << shift) - 1;
616 if (sw_tag && (sw_tag & ~mask)) {
617 u32 v1 = sw_tag & ((1 << shift) - 1);
618 u32 v2 = (sw_tag >> (shift - 1)) << shift;
620 return v2 | v1 | 1 << shift;
623 return sw_tag | 1 << shift;
626 static inline u32 cxgbi_ddp_tag_base(struct cxgbi_tag_format *tformat,
629 u32 mask = (1 << tformat->rsvd_shift) - 1;
631 if (sw_tag && (sw_tag & ~mask)) {
632 u32 v1 = sw_tag & mask;
633 u32 v2 = sw_tag >> tformat->rsvd_shift;
635 v2 <<= tformat->rsvd_bits + tformat->rsvd_shift;
643 static inline u32 cxgbi_tag_rsvd_bits(struct cxgbi_tag_format *tformat,
646 if (cxgbi_is_ddp_tag(tformat, tag))
647 return (tag >> tformat->rsvd_shift) & tformat->rsvd_mask;
652 static inline u32 cxgbi_tag_nonrsvd_bits(struct cxgbi_tag_format *tformat,
655 unsigned char shift = tformat->rsvd_bits + tformat->rsvd_shift - 1;
658 if (cxgbi_is_ddp_tag(tformat, tag)) {
659 v1 = tag & ((1 << tformat->rsvd_shift) - 1);
660 v2 = (tag >> (shift + 1)) << tformat->rsvd_shift;
662 u32 mask = (1 << shift) - 1;
663 tag &= ~(1 << shift);
665 v2 = (tag >> 1) & ~mask;
670 static inline void *cxgbi_alloc_big_mem(unsigned int size,
673 void *p = kmalloc(size, gfp);
681 static inline void cxgbi_free_big_mem(void *addr)
683 if (is_vmalloc_addr(addr))
689 static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba *chba, __be32 ipaddr)
691 if (chba->cdev->flags & CXGBI_FLAG_IPV4_SET)
692 chba->ipv4addr = ipaddr;
694 pr_info("set iscsi ipv4 NOT supported, using %s ipv4.\n",
698 static inline __be32 cxgbi_get_iscsi_ipv4(struct cxgbi_hba *chba)
700 return chba->ipv4addr;
703 struct cxgbi_device *cxgbi_device_register(unsigned int, unsigned int);
704 void cxgbi_device_unregister(struct cxgbi_device *);
705 void cxgbi_device_unregister_all(unsigned int flag);
706 struct cxgbi_device *cxgbi_device_find_by_lldev(void *);
707 int cxgbi_hbas_add(struct cxgbi_device *, unsigned int, unsigned int,
708 struct scsi_host_template *,
709 struct scsi_transport_template *);
710 void cxgbi_hbas_remove(struct cxgbi_device *);
712 int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base,
713 unsigned int max_conn);
714 void cxgbi_device_portmap_cleanup(struct cxgbi_device *cdev);
716 void cxgbi_conn_tx_open(struct cxgbi_sock *);
717 void cxgbi_conn_pdu_ready(struct cxgbi_sock *);
718 int cxgbi_conn_alloc_pdu(struct iscsi_task *, u8);
719 int cxgbi_conn_init_pdu(struct iscsi_task *, unsigned int , unsigned int);
720 int cxgbi_conn_xmit_pdu(struct iscsi_task *);
722 void cxgbi_cleanup_task(struct iscsi_task *task);
724 void cxgbi_get_conn_stats(struct iscsi_cls_conn *, struct iscsi_stats *);
725 int cxgbi_set_conn_param(struct iscsi_cls_conn *,
726 enum iscsi_param, char *, int);
727 int cxgbi_get_conn_param(struct iscsi_cls_conn *, enum iscsi_param, char *);
728 struct iscsi_cls_conn *cxgbi_create_conn(struct iscsi_cls_session *, u32);
729 int cxgbi_bind_conn(struct iscsi_cls_session *,
730 struct iscsi_cls_conn *, u64, int);
731 void cxgbi_destroy_session(struct iscsi_cls_session *);
732 struct iscsi_cls_session *cxgbi_create_session(struct iscsi_endpoint *,
734 int cxgbi_set_host_param(struct Scsi_Host *,
735 enum iscsi_host_param, char *, int);
736 int cxgbi_get_host_param(struct Scsi_Host *, enum iscsi_host_param, char *);
737 struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *,
738 struct sockaddr *, int);
739 int cxgbi_ep_poll(struct iscsi_endpoint *, int);
740 void cxgbi_ep_disconnect(struct iscsi_endpoint *);
742 int cxgbi_iscsi_init(struct iscsi_transport *,
743 struct scsi_transport_template **);
744 void cxgbi_iscsi_cleanup(struct iscsi_transport *,
745 struct scsi_transport_template **);
746 void cxgbi_parse_pdu_itt(struct iscsi_conn *, itt_t, int *, int *);
747 int cxgbi_ddp_init(struct cxgbi_device *, unsigned int, unsigned int,
748 unsigned int, unsigned int);
749 int cxgbi_ddp_cleanup(struct cxgbi_device *);
750 void cxgbi_ddp_page_size_factor(int *);
751 void cxgbi_ddp_ppod_clear(struct cxgbi_pagepod *);
752 void cxgbi_ddp_ppod_set(struct cxgbi_pagepod *, struct cxgbi_pagepod_hdr *,
753 struct cxgbi_gather_list *, unsigned int);
754 #endif /*__LIBCXGBI_H__*/