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
;
136 #define DDP_PGIDX_MAX 4
137 #define DDP_THRESHOLD 2048
139 #define PPOD_PAGES_SHIFT 2 /* 4 pages per pod */
141 #define PPOD_SIZE sizeof(struct cxgbi_pagepod) /* 64 */
142 #define PPOD_SIZE_SHIFT 6
144 #define ULPMEM_DSGL_MAX_NPPODS 16 /* 1024/PPOD_SIZE */
145 #define ULPMEM_IDATA_MAX_NPPODS 4 /* 256/PPOD_SIZE */
146 #define PCIE_MEMWIN_MAX_NPPODS 16 /* 1024/PPOD_SIZE */
148 #define PPOD_COLOR_SHIFT 0
149 #define PPOD_COLOR(x) ((x) << PPOD_COLOR_SHIFT)
151 #define PPOD_IDX_SHIFT 6
152 #define PPOD_IDX_MAX_SIZE 24
154 #define PPOD_TID_SHIFT 0
155 #define PPOD_TID(x) ((x) << PPOD_TID_SHIFT)
157 #define PPOD_TAG_SHIFT 6
158 #define PPOD_TAG(x) ((x) << PPOD_TAG_SHIFT)
160 #define PPOD_VALID_SHIFT 24
161 #define PPOD_VALID(x) ((x) << PPOD_VALID_SHIFT)
162 #define PPOD_VALID_FLAG PPOD_VALID(1U)
166 * Opaque version of structure the SGE stores at skb->head of TX_DATA packets
167 * and for which we must reserve space.
169 struct sge_opaque_hdr
{
171 dma_addr_t addr
[MAX_SKB_FRAGS
+ 1];
175 struct cxgbi_device
*cdev
;
181 unsigned short rss_qid
;
182 unsigned short txq_idx
;
183 unsigned short advmss
;
184 unsigned int tx_chan
;
185 unsigned int rx_chan
;
186 unsigned int mss_idx
;
187 unsigned int smac_idx
;
188 unsigned char port_id
;
192 unsigned char hcrc_len
;
193 unsigned char dcrc_len
;
196 struct sk_buff
*wr_pending_head
;
197 struct sk_buff
*wr_pending_tail
;
198 struct sk_buff
*cpl_close
;
199 struct sk_buff
*cpl_abort_req
;
200 struct sk_buff
*cpl_abort_rpl
;
201 struct sk_buff
*skb_ulp_lhdr
;
205 struct sockaddr_in saddr
;
206 struct sockaddr_in daddr
;
207 struct dst_entry
*dst
;
208 struct sk_buff_head receive_queue
;
209 struct sk_buff_head write_queue
;
210 struct timer_list retry_timer
;
212 rwlock_t callback_lock
;
226 enum cxgbi_sock_states
{
239 * Connection flags -- many to track some close related events.
241 enum cxgbi_sock_flags
{
242 CTPF_ABORT_RPL_RCVD
, /*received one ABORT_RPL_RSS message */
243 CTPF_ABORT_REQ_RCVD
, /*received one ABORT_REQ_RSS message */
244 CTPF_ABORT_RPL_PENDING
, /* expecting an abort reply */
245 CTPF_TX_DATA_SENT
, /* already sent a TX_DATA WR */
246 CTPF_ACTIVE_CLOSE_NEEDED
,/* need to be closed */
247 CTPF_HAS_ATID
, /* reserved atid */
248 CTPF_HAS_TID
, /* reserved hw tid */
249 CTPF_OFFLOAD_DOWN
, /* offload function off */
252 struct cxgbi_skb_rx_cb
{
257 struct cxgbi_skb_tx_cb
{
259 struct sk_buff
*wr_next
;
262 enum cxgbi_skcb_flags
{
263 SKCBF_TX_NEED_HDR
, /* packet needs a header */
264 SKCBF_RX_COALESCED
, /* received whole pdu */
265 SKCBF_RX_HDR
, /* received pdu header */
266 SKCBF_RX_DATA
, /* received pdu payload */
267 SKCBF_RX_STATUS
, /* received ddp status */
268 SKCBF_RX_DATA_DDPD
, /* pdu payload ddp'd */
269 SKCBF_RX_HCRC_ERR
, /* header digest error */
270 SKCBF_RX_DCRC_ERR
, /* data digest error */
271 SKCBF_RX_PAD_ERR
, /* padding byte error */
274 struct cxgbi_skb_cb
{
275 unsigned char ulp_mode
;
279 struct cxgbi_skb_rx_cb rx
;
280 struct cxgbi_skb_tx_cb tx
;
284 #define CXGBI_SKB_CB(skb) ((struct cxgbi_skb_cb *)&((skb)->cb[0]))
285 #define cxgbi_skcb_flags(skb) (CXGBI_SKB_CB(skb)->flags)
286 #define cxgbi_skcb_ulp_mode(skb) (CXGBI_SKB_CB(skb)->ulp_mode)
287 #define cxgbi_skcb_tcp_seq(skb) (CXGBI_SKB_CB(skb)->seq)
288 #define cxgbi_skcb_rx_ddigest(skb) (CXGBI_SKB_CB(skb)->rx.ddigest)
289 #define cxgbi_skcb_rx_pdulen(skb) (CXGBI_SKB_CB(skb)->rx.pdulen)
290 #define cxgbi_skcb_tx_wr_next(skb) (CXGBI_SKB_CB(skb)->tx.wr_next)
292 static inline void cxgbi_skcb_set_flag(struct sk_buff
*skb
,
293 enum cxgbi_skcb_flags flag
)
295 __set_bit(flag
, &(cxgbi_skcb_flags(skb
)));
298 static inline void cxgbi_skcb_clear_flag(struct sk_buff
*skb
,
299 enum cxgbi_skcb_flags flag
)
301 __clear_bit(flag
, &(cxgbi_skcb_flags(skb
)));
304 static inline int cxgbi_skcb_test_flag(struct sk_buff
*skb
,
305 enum cxgbi_skcb_flags flag
)
307 return test_bit(flag
, &(cxgbi_skcb_flags(skb
)));
310 static inline void cxgbi_sock_set_flag(struct cxgbi_sock
*csk
,
311 enum cxgbi_sock_flags flag
)
313 __set_bit(flag
, &csk
->flags
);
314 log_debug(1 << CXGBI_DBG_SOCK
,
315 "csk 0x%p,%u,0x%lx, bit %d.\n",
316 csk
, csk
->state
, csk
->flags
, flag
);
319 static inline void cxgbi_sock_clear_flag(struct cxgbi_sock
*csk
,
320 enum cxgbi_sock_flags flag
)
322 __clear_bit(flag
, &csk
->flags
);
323 log_debug(1 << CXGBI_DBG_SOCK
,
324 "csk 0x%p,%u,0x%lx, bit %d.\n",
325 csk
, csk
->state
, csk
->flags
, flag
);
328 static inline int cxgbi_sock_flag(struct cxgbi_sock
*csk
,
329 enum cxgbi_sock_flags flag
)
333 return test_bit(flag
, &csk
->flags
);
336 static inline void cxgbi_sock_set_state(struct cxgbi_sock
*csk
, int state
)
338 log_debug(1 << CXGBI_DBG_SOCK
,
339 "csk 0x%p,%u,0x%lx, state -> %u.\n",
340 csk
, csk
->state
, csk
->flags
, state
);
344 static inline void cxgbi_sock_free(struct kref
*kref
)
346 struct cxgbi_sock
*csk
= container_of(kref
,
350 log_debug(1 << CXGBI_DBG_SOCK
,
351 "free csk 0x%p, state %u, flags 0x%lx\n",
352 csk
, csk
->state
, csk
->flags
);
357 static inline void __cxgbi_sock_put(const char *fn
, struct cxgbi_sock
*csk
)
359 log_debug(1 << CXGBI_DBG_SOCK
,
360 "%s, put csk 0x%p, ref %u-1.\n",
361 fn
, csk
, atomic_read(&csk
->refcnt
.refcount
));
362 kref_put(&csk
->refcnt
, cxgbi_sock_free
);
364 #define cxgbi_sock_put(csk) __cxgbi_sock_put(__func__, csk)
366 static inline void __cxgbi_sock_get(const char *fn
, struct cxgbi_sock
*csk
)
368 log_debug(1 << CXGBI_DBG_SOCK
,
369 "%s, get csk 0x%p, ref %u+1.\n",
370 fn
, csk
, atomic_read(&csk
->refcnt
.refcount
));
371 kref_get(&csk
->refcnt
);
373 #define cxgbi_sock_get(csk) __cxgbi_sock_get(__func__, csk)
375 static inline int cxgbi_sock_is_closing(struct cxgbi_sock
*csk
)
377 return csk
->state
>= CTP_ACTIVE_CLOSE
;
380 static inline int cxgbi_sock_is_established(struct cxgbi_sock
*csk
)
382 return csk
->state
== CTP_ESTABLISHED
;
385 static inline void cxgbi_sock_purge_write_queue(struct cxgbi_sock
*csk
)
389 while ((skb
= __skb_dequeue(&csk
->write_queue
)))
393 static inline unsigned int cxgbi_sock_compute_wscale(unsigned int win
)
395 unsigned int wscale
= 0;
397 while (wscale
< 14 && (65535 << wscale
) < win
)
402 static inline struct sk_buff
*alloc_wr(int wrlen
, int dlen
, gfp_t gfp
)
404 struct sk_buff
*skb
= alloc_skb(wrlen
+ dlen
, gfp
);
407 __skb_put(skb
, wrlen
);
408 memset(skb
->head
, 0, wrlen
+ dlen
);
410 pr_info("alloc cpl wr skb %u+%u, OOM.\n", wrlen
, dlen
);
416 * The number of WRs needed for an skb depends on the number of fragments
417 * in the skb and whether it has any payload in its main body. This maps the
418 * length of the gather list represented by an skb into the # of necessary WRs.
419 * The extra two fragments are for iscsi bhs and payload padding.
421 #define SKB_WR_LIST_SIZE (MAX_SKB_FRAGS + 2)
423 static inline void cxgbi_sock_reset_wr_list(struct cxgbi_sock
*csk
)
425 csk
->wr_pending_head
= csk
->wr_pending_tail
= NULL
;
428 static inline void cxgbi_sock_enqueue_wr(struct cxgbi_sock
*csk
,
431 cxgbi_skcb_tx_wr_next(skb
) = NULL
;
433 * We want to take an extra reference since both us and the driver
434 * need to free the packet before it's really freed. We know there's
435 * just one user currently so we use atomic_set rather than skb_get
436 * to avoid the atomic op.
438 atomic_set(&skb
->users
, 2);
440 if (!csk
->wr_pending_head
)
441 csk
->wr_pending_head
= skb
;
443 cxgbi_skcb_tx_wr_next(csk
->wr_pending_tail
) = skb
;
444 csk
->wr_pending_tail
= skb
;
447 static inline int cxgbi_sock_count_pending_wrs(const struct cxgbi_sock
*csk
)
450 const struct sk_buff
*skb
= csk
->wr_pending_head
;
454 skb
= cxgbi_skcb_tx_wr_next(skb
);
459 static inline struct sk_buff
*cxgbi_sock_peek_wr(const struct cxgbi_sock
*csk
)
461 return csk
->wr_pending_head
;
464 static inline struct sk_buff
*cxgbi_sock_dequeue_wr(struct cxgbi_sock
*csk
)
466 struct sk_buff
*skb
= csk
->wr_pending_head
;
469 csk
->wr_pending_head
= cxgbi_skcb_tx_wr_next(skb
);
470 cxgbi_skcb_tx_wr_next(skb
) = NULL
;
475 void cxgbi_sock_check_wr_invariants(const struct cxgbi_sock
*);
476 void cxgbi_sock_purge_wr_queue(struct cxgbi_sock
*);
477 void cxgbi_sock_skb_entail(struct cxgbi_sock
*, struct sk_buff
*);
478 void cxgbi_sock_fail_act_open(struct cxgbi_sock
*, int);
479 void cxgbi_sock_act_open_req_arp_failure(void *, struct sk_buff
*);
480 void cxgbi_sock_closed(struct cxgbi_sock
*);
481 void cxgbi_sock_established(struct cxgbi_sock
*, unsigned int, unsigned int);
482 void cxgbi_sock_rcv_abort_rpl(struct cxgbi_sock
*);
483 void cxgbi_sock_rcv_peer_close(struct cxgbi_sock
*);
484 void cxgbi_sock_rcv_close_conn_rpl(struct cxgbi_sock
*, u32
);
485 void cxgbi_sock_rcv_wr_ack(struct cxgbi_sock
*, unsigned int, unsigned int,
487 unsigned int cxgbi_sock_select_mss(struct cxgbi_sock
*, unsigned int);
488 void cxgbi_sock_free_cpl_skbs(struct cxgbi_sock
*);
491 struct net_device
*ndev
;
492 struct net_device
*vdev
; /* vlan dev */
493 struct Scsi_Host
*shost
;
494 struct cxgbi_device
*cdev
;
496 unsigned char port_id
;
499 struct cxgbi_ports_map
{
500 unsigned int max_connect
;
502 unsigned short sport_base
;
505 struct cxgbi_sock
**port_csk
;
508 #define CXGBI_FLAG_DEV_T3 0x1
509 #define CXGBI_FLAG_DEV_T4 0x2
510 #define CXGBI_FLAG_ADAPTER_RESET 0x4
511 #define CXGBI_FLAG_IPV4_SET 0x10
512 struct cxgbi_device
{
513 struct list_head list_head
;
515 struct net_device
**ports
;
517 struct cxgbi_hba
**hbas
;
518 const unsigned short *mtus
;
520 unsigned char nports
;
521 struct pci_dev
*pdev
;
522 struct dentry
*debugfs_root
;
523 struct iscsi_transport
*itp
;
526 unsigned int snd_win
;
527 unsigned int rcv_win
;
528 unsigned int rx_credit_thres
;
529 unsigned int skb_tx_rsvd
;
530 unsigned int skb_rx_extra
; /* for msg coalesced mode */
531 unsigned int tx_max_size
;
532 unsigned int rx_max_size
;
533 struct cxgbi_ports_map pmap
;
534 struct cxgbi_tag_format tag_format
;
535 struct cxgbi_ddp_info
*ddp
;
537 void (*dev_ddp_cleanup
)(struct cxgbi_device
*);
538 int (*csk_ddp_set
)(struct cxgbi_sock
*, struct cxgbi_pagepod_hdr
*,
539 unsigned int, unsigned int,
540 struct cxgbi_gather_list
*);
541 void (*csk_ddp_clear
)(struct cxgbi_hba
*,
542 unsigned int, unsigned int, unsigned int);
543 int (*csk_ddp_setup_digest
)(struct cxgbi_sock
*,
544 unsigned int, int, int, int);
545 int (*csk_ddp_setup_pgidx
)(struct cxgbi_sock
*,
546 unsigned int, int, bool);
548 void (*csk_release_offload_resources
)(struct cxgbi_sock
*);
549 int (*csk_rx_pdu_ready
)(struct cxgbi_sock
*, struct sk_buff
*);
550 u32 (*csk_send_rx_credits
)(struct cxgbi_sock
*, u32
);
551 int (*csk_push_tx_frames
)(struct cxgbi_sock
*, int);
552 void (*csk_send_abort_req
)(struct cxgbi_sock
*);
553 void (*csk_send_close_req
)(struct cxgbi_sock
*);
554 int (*csk_alloc_cpls
)(struct cxgbi_sock
*);
555 int (*csk_init_act_open
)(struct cxgbi_sock
*);
559 #define cxgbi_cdev_priv(cdev) ((cdev)->dd_data)
562 struct cxgbi_endpoint
*cep
;
563 struct iscsi_conn
*iconn
;
564 struct cxgbi_hba
*chba
;
568 struct cxgbi_endpoint
{
569 struct cxgbi_conn
*cconn
;
570 struct cxgbi_hba
*chba
;
571 struct cxgbi_sock
*csk
;
574 #define MAX_PDU_FRAGS ((ULP2_MAX_PDU_PAYLOAD + 512 - 1) / 512)
575 struct cxgbi_task_data
{
576 unsigned short nr_frags
;
577 struct page_frag frags
[MAX_PDU_FRAGS
];
581 unsigned int sgoffset
;
583 #define iscsi_task_cxgbi_data(task) \
584 ((task)->dd_data + sizeof(struct iscsi_tcp_task))
586 static inline int cxgbi_is_ddp_tag(struct cxgbi_tag_format
*tformat
, u32 tag
)
588 return !(tag
& (1 << (tformat
->rsvd_bits
+ tformat
->rsvd_shift
- 1)));
591 static inline int cxgbi_sw_tag_usable(struct cxgbi_tag_format
*tformat
,
594 sw_tag
>>= (32 - tformat
->rsvd_bits
);
598 static inline u32
cxgbi_set_non_ddp_tag(struct cxgbi_tag_format
*tformat
,
601 unsigned char shift
= tformat
->rsvd_bits
+ tformat
->rsvd_shift
- 1;
602 u32 mask
= (1 << shift
) - 1;
604 if (sw_tag
&& (sw_tag
& ~mask
)) {
605 u32 v1
= sw_tag
& ((1 << shift
) - 1);
606 u32 v2
= (sw_tag
>> (shift
- 1)) << shift
;
608 return v2
| v1
| 1 << shift
;
611 return sw_tag
| 1 << shift
;
614 static inline u32
cxgbi_ddp_tag_base(struct cxgbi_tag_format
*tformat
,
617 u32 mask
= (1 << tformat
->rsvd_shift
) - 1;
619 if (sw_tag
&& (sw_tag
& ~mask
)) {
620 u32 v1
= sw_tag
& mask
;
621 u32 v2
= sw_tag
>> tformat
->rsvd_shift
;
623 v2
<<= tformat
->rsvd_bits
+ tformat
->rsvd_shift
;
631 static inline u32
cxgbi_tag_rsvd_bits(struct cxgbi_tag_format
*tformat
,
634 if (cxgbi_is_ddp_tag(tformat
, tag
))
635 return (tag
>> tformat
->rsvd_shift
) & tformat
->rsvd_mask
;
640 static inline u32
cxgbi_tag_nonrsvd_bits(struct cxgbi_tag_format
*tformat
,
643 unsigned char shift
= tformat
->rsvd_bits
+ tformat
->rsvd_shift
- 1;
646 if (cxgbi_is_ddp_tag(tformat
, tag
)) {
647 v1
= tag
& ((1 << tformat
->rsvd_shift
) - 1);
648 v2
= (tag
>> (shift
+ 1)) << tformat
->rsvd_shift
;
650 u32 mask
= (1 << shift
) - 1;
651 tag
&= ~(1 << shift
);
653 v2
= (tag
>> 1) & ~mask
;
658 static inline void *cxgbi_alloc_big_mem(unsigned int size
,
661 void *p
= kmalloc(size
, gfp
);
669 static inline void cxgbi_free_big_mem(void *addr
)
671 if (is_vmalloc_addr(addr
))
677 static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba
*chba
, __be32 ipaddr
)
679 if (chba
->cdev
->flags
& CXGBI_FLAG_IPV4_SET
)
680 chba
->ipv4addr
= ipaddr
;
682 pr_info("set iscsi ipv4 NOT supported, using %s ipv4.\n",
686 static inline __be32
cxgbi_get_iscsi_ipv4(struct cxgbi_hba
*chba
)
688 return chba
->ipv4addr
;
691 struct cxgbi_device
*cxgbi_device_register(unsigned int, unsigned int);
692 void cxgbi_device_unregister(struct cxgbi_device
*);
693 void cxgbi_device_unregister_all(unsigned int flag
);
694 struct cxgbi_device
*cxgbi_device_find_by_lldev(void *);
695 int cxgbi_hbas_add(struct cxgbi_device
*, unsigned int, unsigned int,
696 struct scsi_host_template
*,
697 struct scsi_transport_template
*);
698 void cxgbi_hbas_remove(struct cxgbi_device
*);
700 int cxgbi_device_portmap_create(struct cxgbi_device
*cdev
, unsigned int base
,
701 unsigned int max_conn
);
702 void cxgbi_device_portmap_cleanup(struct cxgbi_device
*cdev
);
704 void cxgbi_conn_tx_open(struct cxgbi_sock
*);
705 void cxgbi_conn_pdu_ready(struct cxgbi_sock
*);
706 int cxgbi_conn_alloc_pdu(struct iscsi_task
*, u8
);
707 int cxgbi_conn_init_pdu(struct iscsi_task
*, unsigned int , unsigned int);
708 int cxgbi_conn_xmit_pdu(struct iscsi_task
*);
710 void cxgbi_cleanup_task(struct iscsi_task
*task
);
712 mode_t
cxgbi_attr_is_visible(int param_type
, int param
);
713 void cxgbi_get_conn_stats(struct iscsi_cls_conn
*, struct iscsi_stats
*);
714 int cxgbi_set_conn_param(struct iscsi_cls_conn
*,
715 enum iscsi_param
, char *, int);
716 int cxgbi_get_ep_param(struct iscsi_endpoint
*ep
, enum iscsi_param
, char *);
717 struct iscsi_cls_conn
*cxgbi_create_conn(struct iscsi_cls_session
*, u32
);
718 int cxgbi_bind_conn(struct iscsi_cls_session
*,
719 struct iscsi_cls_conn
*, u64
, int);
720 void cxgbi_destroy_session(struct iscsi_cls_session
*);
721 struct iscsi_cls_session
*cxgbi_create_session(struct iscsi_endpoint
*,
723 int cxgbi_set_host_param(struct Scsi_Host
*,
724 enum iscsi_host_param
, char *, int);
725 int cxgbi_get_host_param(struct Scsi_Host
*, enum iscsi_host_param
, char *);
726 struct iscsi_endpoint
*cxgbi_ep_connect(struct Scsi_Host
*,
727 struct sockaddr
*, int);
728 int cxgbi_ep_poll(struct iscsi_endpoint
*, int);
729 void cxgbi_ep_disconnect(struct iscsi_endpoint
*);
731 int cxgbi_iscsi_init(struct iscsi_transport
*,
732 struct scsi_transport_template
**);
733 void cxgbi_iscsi_cleanup(struct iscsi_transport
*,
734 struct scsi_transport_template
**);
735 void cxgbi_parse_pdu_itt(struct iscsi_conn
*, itt_t
, int *, int *);
736 int cxgbi_ddp_init(struct cxgbi_device
*, unsigned int, unsigned int,
737 unsigned int, unsigned int);
738 int cxgbi_ddp_cleanup(struct cxgbi_device
*);
739 void cxgbi_ddp_page_size_factor(int *);
740 void cxgbi_ddp_ppod_clear(struct cxgbi_pagepod
*);
741 void cxgbi_ddp_ppod_set(struct cxgbi_pagepod
*, struct cxgbi_pagepod_hdr
*,
742 struct cxgbi_gather_list
*, unsigned int);
743 #endif /*__LIBCXGBI_H__*/