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