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 };
cxgbi_ulp_extra_len(int submode)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
cxgbi_skcb_set_flag(struct sk_buff * skb,enum cxgbi_skcb_flags flag)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
cxgbi_skcb_clear_flag(struct sk_buff * skb,enum cxgbi_skcb_flags flag)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
cxgbi_skcb_test_flag(const struct sk_buff * skb,enum cxgbi_skcb_flags flag)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
cxgbi_sock_set_flag(struct cxgbi_sock * csk,enum cxgbi_sock_flags flag)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
cxgbi_sock_clear_flag(struct cxgbi_sock * csk,enum cxgbi_sock_flags flag)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
cxgbi_sock_flag(struct cxgbi_sock * csk,enum cxgbi_sock_flags flag)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
cxgbi_sock_set_state(struct cxgbi_sock * csk,int state)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
cxgbi_sock_free(struct kref * kref)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
__cxgbi_sock_put(const char * fn,struct cxgbi_sock * csk)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
__cxgbi_sock_get(const char * fn,struct cxgbi_sock * csk)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
cxgbi_sock_is_closing(struct cxgbi_sock * csk)338 static inline int cxgbi_sock_is_closing(struct cxgbi_sock *csk)
339 {
340 return csk->state >= CTP_ACTIVE_CLOSE;
341 }
342
cxgbi_sock_is_established(struct cxgbi_sock * csk)343 static inline int cxgbi_sock_is_established(struct cxgbi_sock *csk)
344 {
345 return csk->state == CTP_ESTABLISHED;
346 }
347
cxgbi_sock_purge_write_queue(struct cxgbi_sock * csk)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
cxgbi_sock_compute_wscale(unsigned int win)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
alloc_wr(int wrlen,int dlen,gfp_t gfp)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
cxgbi_sock_reset_wr_list(struct cxgbi_sock * csk)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
cxgbi_sock_enqueue_wr(struct cxgbi_sock * csk,struct sk_buff * skb)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
cxgbi_sock_count_pending_wrs(const struct cxgbi_sock * csk)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
cxgbi_sock_peek_wr(const struct cxgbi_sock * csk)420 static inline struct sk_buff *cxgbi_sock_peek_wr(const struct cxgbi_sock *csk)
421 {
422 return csk->wr_pending_head;
423 }
424
cxgbi_sock_dequeue_wr(struct cxgbi_sock * csk)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 iscsi_transport *itp;
489 struct module *owner;
490
491 unsigned int pfvf;
492 unsigned int rx_credit_thres;
493 unsigned int skb_tx_rsvd;
494 u32 skb_iso_txhdr;
495 unsigned int skb_rx_extra; /* for msg coalesced mode */
496 unsigned int tx_max_size;
497 unsigned int rx_max_size;
498 unsigned int rxq_idx_cntr;
499 struct cxgbi_ports_map pmap;
500
501 struct cxgbi_ppm* (*cdev2ppm)(struct cxgbi_device *);
502 int (*csk_ddp_set_map)(struct cxgbi_ppm *, struct cxgbi_sock *,
503 struct cxgbi_task_tag_info *);
504 void (*csk_ddp_clear_map)(struct cxgbi_device *cdev,
505 struct cxgbi_ppm *,
506 struct cxgbi_task_tag_info *);
507 int (*csk_ddp_setup_digest)(struct cxgbi_sock *,
508 unsigned int, int, int);
509 int (*csk_ddp_setup_pgidx)(struct cxgbi_sock *,
510 unsigned int, int);
511
512 void (*csk_release_offload_resources)(struct cxgbi_sock *);
513 u32 (*csk_send_rx_credits)(struct cxgbi_sock *, u32);
514 int (*csk_push_tx_frames)(struct cxgbi_sock *, int);
515 void (*csk_send_abort_req)(struct cxgbi_sock *);
516 void (*csk_send_close_req)(struct cxgbi_sock *);
517 int (*csk_alloc_cpls)(struct cxgbi_sock *);
518 int (*csk_init_act_open)(struct cxgbi_sock *);
519
520 void *dd_data;
521 };
522 #define cxgbi_cdev_priv(cdev) ((cdev)->dd_data)
523
524 struct cxgbi_conn {
525 struct cxgbi_endpoint *cep;
526 struct iscsi_conn *iconn;
527 struct cxgbi_hba *chba;
528 u32 task_idx_bits;
529 unsigned int ddp_full;
530 unsigned int ddp_tag_full;
531 };
532
533 struct cxgbi_endpoint {
534 struct cxgbi_conn *cconn;
535 struct cxgbi_hba *chba;
536 struct cxgbi_sock *csk;
537 };
538
539 struct cxgbi_task_data {
540 #define CXGBI_TASK_SGL_CHECKED 0x1
541 #define CXGBI_TASK_SGL_COPY 0x2
542 u8 flags;
543 unsigned short nr_frags;
544 struct page_frag frags[MAX_SKB_FRAGS];
545 struct sk_buff *skb;
546 unsigned int dlen;
547 unsigned int offset;
548 unsigned int count;
549 unsigned int sgoffset;
550 u32 total_count;
551 u32 total_offset;
552 u32 max_xmit_dlength;
553 struct cxgbi_task_tag_info ttinfo;
554 };
555 #define iscsi_task_cxgbi_data(task) \
556 ((task)->dd_data + sizeof(struct iscsi_tcp_task))
557
558 struct cxgbi_iso_info {
559 #define CXGBI_ISO_INFO_FSLICE 0x1
560 #define CXGBI_ISO_INFO_LSLICE 0x2
561 #define CXGBI_ISO_INFO_IMM_ENABLE 0x4
562 u8 flags;
563 u8 op;
564 u8 ahs;
565 u8 num_pdu;
566 u32 mpdu;
567 u32 burst_size;
568 u32 len;
569 u32 segment_offset;
570 u32 datasn_offset;
571 u32 buffer_offset;
572 };
573
cxgbi_set_iscsi_ipv4(struct cxgbi_hba * chba,__be32 ipaddr)574 static inline void cxgbi_set_iscsi_ipv4(struct cxgbi_hba *chba, __be32 ipaddr)
575 {
576 if (chba->cdev->flags & CXGBI_FLAG_IPV4_SET)
577 chba->ipv4addr = ipaddr;
578 else
579 pr_info("set iscsi ipv4 NOT supported, using %s ipv4.\n",
580 chba->ndev->name);
581 }
582
583 struct cxgbi_device *cxgbi_device_register(unsigned int, unsigned int);
584 void cxgbi_device_unregister(struct cxgbi_device *);
585 void cxgbi_device_unregister_all(unsigned int flag);
586 struct cxgbi_device *cxgbi_device_find_by_lldev(void *);
587 struct cxgbi_device *cxgbi_device_find_by_netdev(struct net_device *, int *);
588 struct cxgbi_device *cxgbi_device_find_by_netdev_rcu(struct net_device *,
589 int *);
590 int cxgbi_hbas_add(struct cxgbi_device *, u64, unsigned int,
591 const struct scsi_host_template *,
592 struct scsi_transport_template *);
593 void cxgbi_hbas_remove(struct cxgbi_device *);
594
595 int cxgbi_device_portmap_create(struct cxgbi_device *cdev, unsigned int base,
596 unsigned int max_conn);
597 void cxgbi_device_portmap_cleanup(struct cxgbi_device *cdev);
598
599 void cxgbi_conn_tx_open(struct cxgbi_sock *);
600 void cxgbi_conn_pdu_ready(struct cxgbi_sock *);
601 int cxgbi_conn_alloc_pdu(struct iscsi_task *, u8);
602 int cxgbi_conn_init_pdu(struct iscsi_task *, unsigned int , unsigned int);
603 int cxgbi_conn_xmit_pdu(struct iscsi_task *);
604
605 void cxgbi_cleanup_task(struct iscsi_task *task);
606
607 umode_t cxgbi_attr_is_visible(int param_type, int param);
608 void cxgbi_get_conn_stats(struct iscsi_cls_conn *, struct iscsi_stats *);
609 int cxgbi_set_conn_param(struct iscsi_cls_conn *,
610 enum iscsi_param, char *, int);
611 int cxgbi_get_ep_param(struct iscsi_endpoint *ep, enum iscsi_param, char *);
612 struct iscsi_cls_conn *cxgbi_create_conn(struct iscsi_cls_session *, u32);
613 int cxgbi_bind_conn(struct iscsi_cls_session *,
614 struct iscsi_cls_conn *, u64, int);
615 void cxgbi_destroy_session(struct iscsi_cls_session *);
616 struct iscsi_cls_session *cxgbi_create_session(struct iscsi_endpoint *,
617 u16, u16, u32);
618 int cxgbi_set_host_param(struct Scsi_Host *,
619 enum iscsi_host_param, char *, int);
620 int cxgbi_get_host_param(struct Scsi_Host *, enum iscsi_host_param, char *);
621 struct iscsi_endpoint *cxgbi_ep_connect(struct Scsi_Host *,
622 struct sockaddr *, int);
623 int cxgbi_ep_poll(struct iscsi_endpoint *, int);
624 void cxgbi_ep_disconnect(struct iscsi_endpoint *);
625
626 int cxgbi_iscsi_init(struct iscsi_transport *,
627 struct scsi_transport_template **);
628 void cxgbi_iscsi_cleanup(struct iscsi_transport *,
629 struct scsi_transport_template **);
630 void cxgbi_parse_pdu_itt(struct iscsi_conn *, itt_t, int *, int *);
631 int cxgbi_ddp_init(struct cxgbi_device *, unsigned int, unsigned int,
632 unsigned int, unsigned int);
633 int cxgbi_ddp_cleanup(struct cxgbi_device *);
634 void cxgbi_ddp_page_size_factor(int *);
635 void cxgbi_ddp_set_one_ppod(struct cxgbi_pagepod *,
636 struct cxgbi_task_tag_info *,
637 struct scatterlist **sg_pp, unsigned int *sg_off);
638 int cxgbi_ddp_ppm_setup(void **ppm_pp, struct cxgbi_device *cdev,
639 struct cxgbi_tag_format *tformat,
640 unsigned int iscsi_size, unsigned int llimit,
641 unsigned int start, unsigned int rsvd_factor,
642 unsigned int edram_start, unsigned int edram_size);
643 #endif /*__LIBCXGBI_H__*/
644