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Linux-2.6.12-rc2
[mirror_ubuntu-focal-kernel.git] / drivers / message / fusion / mptlan.c
1 /*
2 * linux/drivers/message/fusion/mptlan.c
3 * IP Over Fibre Channel device driver.
4 * For use with PCI chip/adapter(s):
5 * LSIFC9xx/LSI409xx Fibre Channel
6 * running LSI Logic Fusion MPT (Message Passing Technology) firmware.
7 *
8 * Credits:
9 * This driver would not exist if not for Alan Cox's development
10 * of the linux i2o driver.
11 *
12 * Special thanks goes to the I2O LAN driver people at the
13 * University of Helsinki, who, unbeknownst to them, provided
14 * the inspiration and initial structure for this driver.
15 *
16 * A huge debt of gratitude is owed to David S. Miller (DaveM)
17 * for fixing much of the stupid and broken stuff in the early
18 * driver while porting to sparc64 platform. THANK YOU!
19 *
20 * A really huge debt of gratitude is owed to Eddie C. Dost
21 * for gobs of hard work fixing and optimizing LAN code.
22 * THANK YOU!
23 *
24 * (see also mptbase.c)
25 *
26 * Copyright (c) 2000-2004 LSI Logic Corporation
27 * Originally By: Noah Romer
28 * (mailto:mpt_linux_developer@lsil.com)
29 *
30 * $Id: mptlan.c,v 1.53 2002/10/17 20:15:58 pdelaney Exp $
31 */
32 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
33 /*
34 This program is free software; you can redistribute it and/or modify
35 it under the terms of the GNU General Public License as published by
36 the Free Software Foundation; version 2 of the License.
37
38 This program is distributed in the hope that it will be useful,
39 but WITHOUT ANY WARRANTY; without even the implied warranty of
40 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
41 GNU General Public License for more details.
42
43 NO WARRANTY
44 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
45 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
46 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
47 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
48 solely responsible for determining the appropriateness of using and
49 distributing the Program and assumes all risks associated with its
50 exercise of rights under this Agreement, including but not limited to
51 the risks and costs of program errors, damage to or loss of data,
52 programs or equipment, and unavailability or interruption of operations.
53
54 DISCLAIMER OF LIABILITY
55 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
56 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
58 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
59 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
60 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
61 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
62
63 You should have received a copy of the GNU General Public License
64 along with this program; if not, write to the Free Software
65 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
66 */
67
68 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
69 /*
70 * Define statements used for debugging
71 */
72 //#define MPT_LAN_IO_DEBUG
73
74 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
75
76 #include "mptlan.h"
77 #include <linux/init.h>
78 #include <linux/module.h>
79 #include <linux/fs.h>
80
81 #define MYNAM "mptlan"
82
83 MODULE_LICENSE("GPL");
84
85 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
86 /*
87 * MPT LAN message sizes without variable part.
88 */
89 #define MPT_LAN_RECEIVE_POST_REQUEST_SIZE \
90 (sizeof(LANReceivePostRequest_t) - sizeof(SGE_MPI_UNION))
91
92 #define MPT_LAN_TRANSACTION32_SIZE \
93 (sizeof(SGETransaction32_t) - sizeof(u32))
94
95 /*
96 * Fusion MPT LAN private structures
97 */
98
99 struct NAA_Hosed {
100 u16 NAA;
101 u8 ieee[FC_ALEN];
102 struct NAA_Hosed *next;
103 };
104
105 struct BufferControl {
106 struct sk_buff *skb;
107 dma_addr_t dma;
108 unsigned int len;
109 };
110
111 struct mpt_lan_priv {
112 MPT_ADAPTER *mpt_dev;
113 u8 pnum; /* Port number in the IOC. This is not a Unix network port! */
114
115 atomic_t buckets_out; /* number of unused buckets on IOC */
116 int bucketthresh; /* Send more when this many left */
117
118 int *mpt_txfidx; /* Free Tx Context list */
119 int mpt_txfidx_tail;
120 spinlock_t txfidx_lock;
121
122 int *mpt_rxfidx; /* Free Rx Context list */
123 int mpt_rxfidx_tail;
124 spinlock_t rxfidx_lock;
125
126 struct BufferControl *RcvCtl; /* Receive BufferControl structs */
127 struct BufferControl *SendCtl; /* Send BufferControl structs */
128
129 int max_buckets_out; /* Max buckets to send to IOC */
130 int tx_max_out; /* IOC's Tx queue len */
131
132 u32 total_posted;
133 u32 total_received;
134 struct net_device_stats stats; /* Per device statistics */
135
136 struct work_struct post_buckets_task;
137 unsigned long post_buckets_active;
138 };
139
140 struct mpt_lan_ohdr {
141 u16 dtype;
142 u8 daddr[FC_ALEN];
143 u16 stype;
144 u8 saddr[FC_ALEN];
145 };
146
147 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
148
149 /*
150 * Forward protos...
151 */
152 static int lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf,
153 MPT_FRAME_HDR *reply);
154 static int mpt_lan_open(struct net_device *dev);
155 static int mpt_lan_reset(struct net_device *dev);
156 static int mpt_lan_close(struct net_device *dev);
157 static void mpt_lan_post_receive_buckets(void *dev_id);
158 static void mpt_lan_wake_post_buckets_task(struct net_device *dev,
159 int priority);
160 static int mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg);
161 static int mpt_lan_receive_post_reply(struct net_device *dev,
162 LANReceivePostReply_t *pRecvRep);
163 static int mpt_lan_send_turbo(struct net_device *dev, u32 tmsg);
164 static int mpt_lan_send_reply(struct net_device *dev,
165 LANSendReply_t *pSendRep);
166 static int mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase);
167 static int mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
168 static unsigned short mpt_lan_type_trans(struct sk_buff *skb,
169 struct net_device *dev);
170
171 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
172 /*
173 * Fusion MPT LAN private data
174 */
175 static int LanCtx = -1;
176
177 static u32 max_buckets_out = 127;
178 static u32 tx_max_out_p = 127 - 16;
179
180 #ifdef QLOGIC_NAA_WORKAROUND
181 static struct NAA_Hosed *mpt_bad_naa = NULL;
182 DEFINE_RWLOCK(bad_naa_lock);
183 #endif
184
185 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
186 /*
187 * Fusion MPT LAN external data
188 */
189 extern int mpt_lan_index;
190
191 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
192 /**
193 * lan_reply - Handle all data sent from the hardware.
194 * @ioc: Pointer to MPT_ADAPTER structure
195 * @mf: Pointer to original MPT request frame (NULL if TurboReply)
196 * @reply: Pointer to MPT reply frame
197 *
198 * Returns 1 indicating original alloc'd request frame ptr
199 * should be freed, or 0 if it shouldn't.
200 */
201 static int
202 lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *reply)
203 {
204 struct net_device *dev = ioc->netdev;
205 int FreeReqFrame = 0;
206
207 dioprintk((KERN_INFO MYNAM ": %s/%s: Got reply.\n",
208 IOC_AND_NETDEV_NAMES_s_s(dev)));
209
210 // dioprintk((KERN_INFO MYNAM "@lan_reply: mf = %p, reply = %p\n",
211 // mf, reply));
212
213 if (mf == NULL) {
214 u32 tmsg = CAST_PTR_TO_U32(reply);
215
216 dioprintk((KERN_INFO MYNAM ": %s/%s: @lan_reply, tmsg %08x\n",
217 IOC_AND_NETDEV_NAMES_s_s(dev),
218 tmsg));
219
220 switch (GET_LAN_FORM(tmsg)) {
221
222 // NOTE! (Optimization) First case here is now caught in
223 // mptbase.c::mpt_interrupt() routine and callcack here
224 // is now skipped for this case! 20001218 -sralston
225 #if 0
226 case LAN_REPLY_FORM_MESSAGE_CONTEXT:
227 // dioprintk((KERN_INFO MYNAM "/lan_reply: "
228 // "MessageContext turbo reply received\n"));
229 FreeReqFrame = 1;
230 break;
231 #endif
232
233 case LAN_REPLY_FORM_SEND_SINGLE:
234 // dioprintk((MYNAM "/lan_reply: "
235 // "calling mpt_lan_send_reply (turbo)\n"));
236
237 // Potential BUG here? -sralston
238 // FreeReqFrame = mpt_lan_send_turbo(dev, tmsg);
239 // If/when mpt_lan_send_turbo would return 1 here,
240 // calling routine (mptbase.c|mpt_interrupt)
241 // would Oops because mf has already been set
242 // to NULL. So after return from this func,
243 // mpt_interrupt() will attempt to put (NULL) mf ptr
244 // item back onto its adapter FreeQ - Oops!:-(
245 // It's Ok, since mpt_lan_send_turbo() *currently*
246 // always returns 0, but..., just in case:
247
248 (void) mpt_lan_send_turbo(dev, tmsg);
249 FreeReqFrame = 0;
250
251 break;
252
253 case LAN_REPLY_FORM_RECEIVE_SINGLE:
254 // dioprintk((KERN_INFO MYNAM "@lan_reply: "
255 // "rcv-Turbo = %08x\n", tmsg));
256 mpt_lan_receive_post_turbo(dev, tmsg);
257 break;
258
259 default:
260 printk (KERN_ERR MYNAM "/lan_reply: Got a turbo reply "
261 "that I don't know what to do with\n");
262
263 /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */
264
265 break;
266 }
267
268 return FreeReqFrame;
269 }
270
271 // msg = (u32 *) reply;
272 // dioprintk((KERN_INFO MYNAM "@lan_reply: msg = %08x %08x %08x %08x\n",
273 // le32_to_cpu(msg[0]), le32_to_cpu(msg[1]),
274 // le32_to_cpu(msg[2]), le32_to_cpu(msg[3])));
275 // dioprintk((KERN_INFO MYNAM "@lan_reply: Function = %02xh\n",
276 // reply->u.hdr.Function));
277
278 switch (reply->u.hdr.Function) {
279
280 case MPI_FUNCTION_LAN_SEND:
281 {
282 LANSendReply_t *pSendRep;
283
284 pSendRep = (LANSendReply_t *) reply;
285 FreeReqFrame = mpt_lan_send_reply(dev, pSendRep);
286 break;
287 }
288
289 case MPI_FUNCTION_LAN_RECEIVE:
290 {
291 LANReceivePostReply_t *pRecvRep;
292
293 pRecvRep = (LANReceivePostReply_t *) reply;
294 if (pRecvRep->NumberOfContexts) {
295 mpt_lan_receive_post_reply(dev, pRecvRep);
296 if (!(pRecvRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY))
297 FreeReqFrame = 1;
298 } else
299 dioprintk((KERN_INFO MYNAM "@lan_reply: zero context "
300 "ReceivePostReply received.\n"));
301 break;
302 }
303
304 case MPI_FUNCTION_LAN_RESET:
305 /* Just a default reply. Might want to check it to
306 * make sure that everything went ok.
307 */
308 FreeReqFrame = 1;
309 break;
310
311 case MPI_FUNCTION_EVENT_NOTIFICATION:
312 case MPI_FUNCTION_EVENT_ACK:
313 /* UPDATE! 20010120 -sralston
314 * _EVENT_NOTIFICATION should NOT come down this path any more.
315 * Should be routed to mpt_lan_event_process(), but just in case...
316 */
317 FreeReqFrame = 1;
318 break;
319
320 default:
321 printk (KERN_ERR MYNAM "/lan_reply: Got a non-turbo "
322 "reply that I don't know what to do with\n");
323
324 /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */
325 FreeReqFrame = 1;
326
327 break;
328 }
329
330 return FreeReqFrame;
331 }
332
333 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
334 static int
335 mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
336 {
337 struct net_device *dev = ioc->netdev;
338 struct mpt_lan_priv *priv = netdev_priv(dev);
339
340 dlprintk((KERN_INFO MYNAM ": IOC %s_reset routed to LAN driver!\n",
341 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
342 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
343
344 if (priv->mpt_rxfidx == NULL)
345 return (1);
346
347 if (reset_phase == MPT_IOC_SETUP_RESET) {
348 ;
349 } else if (reset_phase == MPT_IOC_PRE_RESET) {
350 int i;
351 unsigned long flags;
352
353 netif_stop_queue(dev);
354
355 dlprintk ((KERN_INFO "mptlan/ioc_reset: called netif_stop_queue for %s.\n", dev->name));
356
357 atomic_set(&priv->buckets_out, 0);
358
359 /* Reset Rx Free Tail index and re-populate the queue. */
360 spin_lock_irqsave(&priv->rxfidx_lock, flags);
361 priv->mpt_rxfidx_tail = -1;
362 for (i = 0; i < priv->max_buckets_out; i++)
363 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i;
364 spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
365 } else {
366 mpt_lan_post_receive_buckets(dev);
367 netif_wake_queue(dev);
368 }
369
370 return 1;
371 }
372
373 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
374 static int
375 mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
376 {
377 dlprintk((KERN_INFO MYNAM ": MPT event routed to LAN driver!\n"));
378
379 switch (le32_to_cpu(pEvReply->Event)) {
380 case MPI_EVENT_NONE: /* 00 */
381 case MPI_EVENT_LOG_DATA: /* 01 */
382 case MPI_EVENT_STATE_CHANGE: /* 02 */
383 case MPI_EVENT_UNIT_ATTENTION: /* 03 */
384 case MPI_EVENT_IOC_BUS_RESET: /* 04 */
385 case MPI_EVENT_EXT_BUS_RESET: /* 05 */
386 case MPI_EVENT_RESCAN: /* 06 */
387 /* Ok, do we need to do anything here? As far as
388 I can tell, this is when a new device gets added
389 to the loop. */
390 case MPI_EVENT_LINK_STATUS_CHANGE: /* 07 */
391 case MPI_EVENT_LOOP_STATE_CHANGE: /* 08 */
392 case MPI_EVENT_LOGOUT: /* 09 */
393 case MPI_EVENT_EVENT_CHANGE: /* 0A */
394 default:
395 break;
396 }
397
398 /*
399 * NOTE: pEvent->AckRequired handling now done in mptbase.c;
400 * Do NOT do it here now!
401 */
402
403 return 1;
404 }
405
406 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
407 static int
408 mpt_lan_open(struct net_device *dev)
409 {
410 struct mpt_lan_priv *priv = netdev_priv(dev);
411 int i;
412
413 if (mpt_lan_reset(dev) != 0) {
414 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
415
416 printk (KERN_WARNING MYNAM "/lan_open: lan_reset failed.");
417
418 if (mpt_dev->active)
419 printk ("The ioc is active. Perhaps it needs to be"
420 " reset?\n");
421 else
422 printk ("The ioc in inactive, most likely in the "
423 "process of being reset. Please try again in "
424 "a moment.\n");
425 }
426
427 priv->mpt_txfidx = kmalloc(priv->tx_max_out * sizeof(int), GFP_KERNEL);
428 if (priv->mpt_txfidx == NULL)
429 goto out;
430 priv->mpt_txfidx_tail = -1;
431
432 priv->SendCtl = kmalloc(priv->tx_max_out * sizeof(struct BufferControl),
433 GFP_KERNEL);
434 if (priv->SendCtl == NULL)
435 goto out_mpt_txfidx;
436 for (i = 0; i < priv->tx_max_out; i++) {
437 memset(&priv->SendCtl[i], 0, sizeof(struct BufferControl));
438 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = i;
439 }
440
441 dlprintk((KERN_INFO MYNAM "@lo: Finished initializing SendCtl\n"));
442
443 priv->mpt_rxfidx = kmalloc(priv->max_buckets_out * sizeof(int),
444 GFP_KERNEL);
445 if (priv->mpt_rxfidx == NULL)
446 goto out_SendCtl;
447 priv->mpt_rxfidx_tail = -1;
448
449 priv->RcvCtl = kmalloc(priv->max_buckets_out *
450 sizeof(struct BufferControl),
451 GFP_KERNEL);
452 if (priv->RcvCtl == NULL)
453 goto out_mpt_rxfidx;
454 for (i = 0; i < priv->max_buckets_out; i++) {
455 memset(&priv->RcvCtl[i], 0, sizeof(struct BufferControl));
456 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i;
457 }
458
459 /**/ dlprintk((KERN_INFO MYNAM "/lo: txfidx contains - "));
460 /**/ for (i = 0; i < priv->tx_max_out; i++)
461 /**/ dlprintk((" %xh", priv->mpt_txfidx[i]));
462 /**/ dlprintk(("\n"));
463
464 dlprintk((KERN_INFO MYNAM "/lo: Finished initializing RcvCtl\n"));
465
466 mpt_lan_post_receive_buckets(dev);
467 printk(KERN_INFO MYNAM ": %s/%s: interface up & active\n",
468 IOC_AND_NETDEV_NAMES_s_s(dev));
469
470 if (mpt_event_register(LanCtx, mpt_lan_event_process) != 0) {
471 printk (KERN_WARNING MYNAM "/lo: Unable to register for Event"
472 " Notifications. This is a bad thing! We're not going "
473 "to go ahead, but I'd be leery of system stability at "
474 "this point.\n");
475 }
476
477 netif_start_queue(dev);
478 dlprintk((KERN_INFO MYNAM "/lo: Done.\n"));
479
480 return 0;
481 out_mpt_rxfidx:
482 kfree(priv->mpt_rxfidx);
483 priv->mpt_rxfidx = NULL;
484 out_SendCtl:
485 kfree(priv->SendCtl);
486 priv->SendCtl = NULL;
487 out_mpt_txfidx:
488 kfree(priv->mpt_txfidx);
489 priv->mpt_txfidx = NULL;
490 out: return -ENOMEM;
491 }
492
493 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
494 /* Send a LanReset message to the FW. This should result in the FW returning
495 any buckets it still has. */
496 static int
497 mpt_lan_reset(struct net_device *dev)
498 {
499 MPT_FRAME_HDR *mf;
500 LANResetRequest_t *pResetReq;
501 struct mpt_lan_priv *priv = netdev_priv(dev);
502
503 mf = mpt_get_msg_frame(LanCtx, priv->mpt_dev);
504
505 if (mf == NULL) {
506 /* dlprintk((KERN_ERR MYNAM "/reset: Evil funkiness abounds! "
507 "Unable to allocate a request frame.\n"));
508 */
509 return -1;
510 }
511
512 pResetReq = (LANResetRequest_t *) mf;
513
514 pResetReq->Function = MPI_FUNCTION_LAN_RESET;
515 pResetReq->ChainOffset = 0;
516 pResetReq->Reserved = 0;
517 pResetReq->PortNumber = priv->pnum;
518 pResetReq->MsgFlags = 0;
519 pResetReq->Reserved2 = 0;
520
521 mpt_put_msg_frame(LanCtx, priv->mpt_dev, mf);
522
523 return 0;
524 }
525
526 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
527 static int
528 mpt_lan_close(struct net_device *dev)
529 {
530 struct mpt_lan_priv *priv = netdev_priv(dev);
531 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
532 unsigned int timeout;
533 int i;
534
535 dlprintk((KERN_INFO MYNAM ": mpt_lan_close called\n"));
536
537 mpt_event_deregister(LanCtx);
538
539 dlprintk((KERN_INFO MYNAM ":lan_close: Posted %d buckets "
540 "since driver was loaded, %d still out\n",
541 priv->total_posted,atomic_read(&priv->buckets_out)));
542
543 netif_stop_queue(dev);
544
545 mpt_lan_reset(dev);
546
547 timeout = 2 * HZ;
548 while (atomic_read(&priv->buckets_out) && --timeout) {
549 set_current_state(TASK_INTERRUPTIBLE);
550 schedule_timeout(1);
551 }
552
553 for (i = 0; i < priv->max_buckets_out; i++) {
554 if (priv->RcvCtl[i].skb != NULL) {
555 /**/ dlprintk((KERN_INFO MYNAM "/lan_close: bucket %05x "
556 /**/ "is still out\n", i));
557 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[i].dma,
558 priv->RcvCtl[i].len,
559 PCI_DMA_FROMDEVICE);
560 dev_kfree_skb(priv->RcvCtl[i].skb);
561 }
562 }
563
564 kfree (priv->RcvCtl);
565 kfree (priv->mpt_rxfidx);
566
567 for (i = 0; i < priv->tx_max_out; i++) {
568 if (priv->SendCtl[i].skb != NULL) {
569 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[i].dma,
570 priv->SendCtl[i].len,
571 PCI_DMA_TODEVICE);
572 dev_kfree_skb(priv->SendCtl[i].skb);
573 }
574 }
575
576 kfree(priv->SendCtl);
577 kfree(priv->mpt_txfidx);
578
579 atomic_set(&priv->buckets_out, 0);
580
581 printk(KERN_INFO MYNAM ": %s/%s: interface down & inactive\n",
582 IOC_AND_NETDEV_NAMES_s_s(dev));
583
584 return 0;
585 }
586
587 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
588 static struct net_device_stats *
589 mpt_lan_get_stats(struct net_device *dev)
590 {
591 struct mpt_lan_priv *priv = netdev_priv(dev);
592
593 return (struct net_device_stats *) &priv->stats;
594 }
595
596 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
597 static int
598 mpt_lan_change_mtu(struct net_device *dev, int new_mtu)
599 {
600 if ((new_mtu < MPT_LAN_MIN_MTU) || (new_mtu > MPT_LAN_MAX_MTU))
601 return -EINVAL;
602 dev->mtu = new_mtu;
603 return 0;
604 }
605
606 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
607 /* Tx timeout handler. */
608 static void
609 mpt_lan_tx_timeout(struct net_device *dev)
610 {
611 struct mpt_lan_priv *priv = netdev_priv(dev);
612 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
613
614 if (mpt_dev->active) {
615 dlprintk (("mptlan/tx_timeout: calling netif_wake_queue for %s.\n", dev->name));
616 netif_wake_queue(dev);
617 }
618 }
619
620 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
621 //static inline int
622 static int
623 mpt_lan_send_turbo(struct net_device *dev, u32 tmsg)
624 {
625 struct mpt_lan_priv *priv = netdev_priv(dev);
626 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
627 struct sk_buff *sent;
628 unsigned long flags;
629 u32 ctx;
630
631 ctx = GET_LAN_BUFFER_CONTEXT(tmsg);
632 sent = priv->SendCtl[ctx].skb;
633
634 priv->stats.tx_packets++;
635 priv->stats.tx_bytes += sent->len;
636
637 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.\n",
638 IOC_AND_NETDEV_NAMES_s_s(dev),
639 __FUNCTION__, sent));
640
641 priv->SendCtl[ctx].skb = NULL;
642 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma,
643 priv->SendCtl[ctx].len, PCI_DMA_TODEVICE);
644 dev_kfree_skb_irq(sent);
645
646 spin_lock_irqsave(&priv->txfidx_lock, flags);
647 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx;
648 spin_unlock_irqrestore(&priv->txfidx_lock, flags);
649
650 netif_wake_queue(dev);
651 return 0;
652 }
653
654 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
655 static int
656 mpt_lan_send_reply(struct net_device *dev, LANSendReply_t *pSendRep)
657 {
658 struct mpt_lan_priv *priv = netdev_priv(dev);
659 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
660 struct sk_buff *sent;
661 unsigned long flags;
662 int FreeReqFrame = 0;
663 u32 *pContext;
664 u32 ctx;
665 u8 count;
666
667 count = pSendRep->NumberOfContexts;
668
669 dioprintk((KERN_INFO MYNAM ": send_reply: IOCStatus: %04x\n",
670 le16_to_cpu(pSendRep->IOCStatus)));
671
672 /* Add check for Loginfo Flag in IOCStatus */
673
674 switch (le16_to_cpu(pSendRep->IOCStatus) & MPI_IOCSTATUS_MASK) {
675 case MPI_IOCSTATUS_SUCCESS:
676 priv->stats.tx_packets += count;
677 break;
678
679 case MPI_IOCSTATUS_LAN_CANCELED:
680 case MPI_IOCSTATUS_LAN_TRANSMIT_ABORTED:
681 break;
682
683 case MPI_IOCSTATUS_INVALID_SGL:
684 priv->stats.tx_errors += count;
685 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Invalid SGL sent to IOC!\n",
686 IOC_AND_NETDEV_NAMES_s_s(dev));
687 goto out;
688
689 default:
690 priv->stats.tx_errors += count;
691 break;
692 }
693
694 pContext = &pSendRep->BufferContext;
695
696 spin_lock_irqsave(&priv->txfidx_lock, flags);
697 while (count > 0) {
698 ctx = GET_LAN_BUFFER_CONTEXT(le32_to_cpu(*pContext));
699
700 sent = priv->SendCtl[ctx].skb;
701 priv->stats.tx_bytes += sent->len;
702
703 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.\n",
704 IOC_AND_NETDEV_NAMES_s_s(dev),
705 __FUNCTION__, sent));
706
707 priv->SendCtl[ctx].skb = NULL;
708 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma,
709 priv->SendCtl[ctx].len, PCI_DMA_TODEVICE);
710 dev_kfree_skb_irq(sent);
711
712 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx;
713
714 pContext++;
715 count--;
716 }
717 spin_unlock_irqrestore(&priv->txfidx_lock, flags);
718
719 out:
720 if (!(pSendRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY))
721 FreeReqFrame = 1;
722
723 netif_wake_queue(dev);
724 return FreeReqFrame;
725 }
726
727 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
728 static int
729 mpt_lan_sdu_send (struct sk_buff *skb, struct net_device *dev)
730 {
731 struct mpt_lan_priv *priv = netdev_priv(dev);
732 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
733 MPT_FRAME_HDR *mf;
734 LANSendRequest_t *pSendReq;
735 SGETransaction32_t *pTrans;
736 SGESimple64_t *pSimple;
737 dma_addr_t dma;
738 unsigned long flags;
739 int ctx;
740 u16 cur_naa = 0x1000;
741
742 dioprintk((KERN_INFO MYNAM ": %s called, skb_addr = %p\n",
743 __FUNCTION__, skb));
744
745 spin_lock_irqsave(&priv->txfidx_lock, flags);
746 if (priv->mpt_txfidx_tail < 0) {
747 netif_stop_queue(dev);
748 spin_unlock_irqrestore(&priv->txfidx_lock, flags);
749
750 printk (KERN_ERR "%s: no tx context available: %u\n",
751 __FUNCTION__, priv->mpt_txfidx_tail);
752 return 1;
753 }
754
755 mf = mpt_get_msg_frame(LanCtx, mpt_dev);
756 if (mf == NULL) {
757 netif_stop_queue(dev);
758 spin_unlock_irqrestore(&priv->txfidx_lock, flags);
759
760 printk (KERN_ERR "%s: Unable to alloc request frame\n",
761 __FUNCTION__);
762 return 1;
763 }
764
765 ctx = priv->mpt_txfidx[priv->mpt_txfidx_tail--];
766 spin_unlock_irqrestore(&priv->txfidx_lock, flags);
767
768 // dioprintk((KERN_INFO MYNAM ": %s/%s: Creating new msg frame (send).\n",
769 // IOC_AND_NETDEV_NAMES_s_s(dev)));
770
771 pSendReq = (LANSendRequest_t *) mf;
772
773 /* Set the mac.raw pointer, since this apparently isn't getting
774 * done before we get the skb. Pull the data pointer past the mac data.
775 */
776 skb->mac.raw = skb->data;
777 skb_pull(skb, 12);
778
779 dma = pci_map_single(mpt_dev->pcidev, skb->data, skb->len,
780 PCI_DMA_TODEVICE);
781
782 priv->SendCtl[ctx].skb = skb;
783 priv->SendCtl[ctx].dma = dma;
784 priv->SendCtl[ctx].len = skb->len;
785
786 /* Message Header */
787 pSendReq->Reserved = 0;
788 pSendReq->Function = MPI_FUNCTION_LAN_SEND;
789 pSendReq->ChainOffset = 0;
790 pSendReq->Reserved2 = 0;
791 pSendReq->MsgFlags = 0;
792 pSendReq->PortNumber = priv->pnum;
793
794 /* Transaction Context Element */
795 pTrans = (SGETransaction32_t *) pSendReq->SG_List;
796
797 /* No Flags, 8 bytes of Details, 32bit Context (bloody turbo replies) */
798 pTrans->ContextSize = sizeof(u32);
799 pTrans->DetailsLength = 2 * sizeof(u32);
800 pTrans->Flags = 0;
801 pTrans->TransactionContext[0] = cpu_to_le32(ctx);
802
803 // dioprintk((KERN_INFO MYNAM ": %s/%s: BC = %08x, skb = %p, buff = %p\n",
804 // IOC_AND_NETDEV_NAMES_s_s(dev),
805 // ctx, skb, skb->data));
806
807 #ifdef QLOGIC_NAA_WORKAROUND
808 {
809 struct NAA_Hosed *nh;
810
811 /* Munge the NAA for Tx packets to QLogic boards, which don't follow
812 RFC 2625. The longer I look at this, the more my opinion of Qlogic
813 drops. */
814 read_lock_irq(&bad_naa_lock);
815 for (nh = mpt_bad_naa; nh != NULL; nh=nh->next) {
816 if ((nh->ieee[0] == skb->mac.raw[0]) &&
817 (nh->ieee[1] == skb->mac.raw[1]) &&
818 (nh->ieee[2] == skb->mac.raw[2]) &&
819 (nh->ieee[3] == skb->mac.raw[3]) &&
820 (nh->ieee[4] == skb->mac.raw[4]) &&
821 (nh->ieee[5] == skb->mac.raw[5])) {
822 cur_naa = nh->NAA;
823 dlprintk ((KERN_INFO "mptlan/sdu_send: using NAA value "
824 "= %04x.\n", cur_naa));
825 break;
826 }
827 }
828 read_unlock_irq(&bad_naa_lock);
829 }
830 #endif
831
832 pTrans->TransactionDetails[0] = cpu_to_le32((cur_naa << 16) |
833 (skb->mac.raw[0] << 8) |
834 (skb->mac.raw[1] << 0));
835 pTrans->TransactionDetails[1] = cpu_to_le32((skb->mac.raw[2] << 24) |
836 (skb->mac.raw[3] << 16) |
837 (skb->mac.raw[4] << 8) |
838 (skb->mac.raw[5] << 0));
839
840 pSimple = (SGESimple64_t *) &pTrans->TransactionDetails[2];
841
842 /* If we ever decide to send more than one Simple SGE per LANSend, then
843 we will need to make sure that LAST_ELEMENT only gets set on the
844 last one. Otherwise, bad voodoo and evil funkiness will commence. */
845 pSimple->FlagsLength = cpu_to_le32(
846 ((MPI_SGE_FLAGS_LAST_ELEMENT |
847 MPI_SGE_FLAGS_END_OF_BUFFER |
848 MPI_SGE_FLAGS_SIMPLE_ELEMENT |
849 MPI_SGE_FLAGS_SYSTEM_ADDRESS |
850 MPI_SGE_FLAGS_HOST_TO_IOC |
851 MPI_SGE_FLAGS_64_BIT_ADDRESSING |
852 MPI_SGE_FLAGS_END_OF_LIST) << MPI_SGE_FLAGS_SHIFT) |
853 skb->len);
854 pSimple->Address.Low = cpu_to_le32((u32) dma);
855 if (sizeof(dma_addr_t) > sizeof(u32))
856 pSimple->Address.High = cpu_to_le32((u32) ((u64) dma >> 32));
857 else
858 pSimple->Address.High = 0;
859
860 mpt_put_msg_frame (LanCtx, mpt_dev, mf);
861 dev->trans_start = jiffies;
862
863 dioprintk((KERN_INFO MYNAM ": %s/%s: Sending packet. FlagsLength = %08x.\n",
864 IOC_AND_NETDEV_NAMES_s_s(dev),
865 le32_to_cpu(pSimple->FlagsLength)));
866
867 return 0;
868 }
869
870 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
871 static inline void
872 mpt_lan_wake_post_buckets_task(struct net_device *dev, int priority)
873 /*
874 * @priority: 0 = put it on the timer queue, 1 = put it on the immediate queue
875 */
876 {
877 struct mpt_lan_priv *priv = dev->priv;
878
879 if (test_and_set_bit(0, &priv->post_buckets_active) == 0) {
880 if (priority) {
881 schedule_work(&priv->post_buckets_task);
882 } else {
883 schedule_delayed_work(&priv->post_buckets_task, 1);
884 dioprintk((KERN_INFO MYNAM ": post_buckets queued on "
885 "timer.\n"));
886 }
887 dioprintk((KERN_INFO MYNAM ": %s/%s: Queued post_buckets task.\n",
888 IOC_AND_NETDEV_NAMES_s_s(dev) ));
889 }
890 }
891
892 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
893 static inline int
894 mpt_lan_receive_skb(struct net_device *dev, struct sk_buff *skb)
895 {
896 struct mpt_lan_priv *priv = dev->priv;
897
898 skb->protocol = mpt_lan_type_trans(skb, dev);
899
900 dioprintk((KERN_INFO MYNAM ": %s/%s: Incoming packet (%d bytes) "
901 "delivered to upper level.\n",
902 IOC_AND_NETDEV_NAMES_s_s(dev), skb->len));
903
904 priv->stats.rx_bytes += skb->len;
905 priv->stats.rx_packets++;
906
907 skb->dev = dev;
908 netif_rx(skb);
909
910 dioprintk((MYNAM "/receive_skb: %d buckets remaining\n",
911 atomic_read(&priv->buckets_out)));
912
913 if (atomic_read(&priv->buckets_out) < priv->bucketthresh)
914 mpt_lan_wake_post_buckets_task(dev, 1);
915
916 dioprintk((KERN_INFO MYNAM "/receive_post_reply: %d buckets "
917 "remaining, %d received back since sod\n",
918 atomic_read(&priv->buckets_out), priv->total_received));
919
920 return 0;
921 }
922
923 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
924 //static inline int
925 static int
926 mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg)
927 {
928 struct mpt_lan_priv *priv = dev->priv;
929 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
930 struct sk_buff *skb, *old_skb;
931 unsigned long flags;
932 u32 ctx, len;
933
934 ctx = GET_LAN_BUCKET_CONTEXT(tmsg);
935 skb = priv->RcvCtl[ctx].skb;
936
937 len = GET_LAN_PACKET_LENGTH(tmsg);
938
939 if (len < MPT_LAN_RX_COPYBREAK) {
940 old_skb = skb;
941
942 skb = (struct sk_buff *)dev_alloc_skb(len);
943 if (!skb) {
944 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n",
945 IOC_AND_NETDEV_NAMES_s_s(dev),
946 __FILE__, __LINE__);
947 return -ENOMEM;
948 }
949
950 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
951 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
952
953 memcpy(skb_put(skb, len), old_skb->data, len);
954
955 pci_dma_sync_single_for_device(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
956 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
957 goto out;
958 }
959
960 skb_put(skb, len);
961
962 priv->RcvCtl[ctx].skb = NULL;
963
964 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
965 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
966
967 out:
968 spin_lock_irqsave(&priv->rxfidx_lock, flags);
969 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
970 spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
971
972 atomic_dec(&priv->buckets_out);
973 priv->total_received++;
974
975 return mpt_lan_receive_skb(dev, skb);
976 }
977
978 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
979 static int
980 mpt_lan_receive_post_free(struct net_device *dev,
981 LANReceivePostReply_t *pRecvRep)
982 {
983 struct mpt_lan_priv *priv = dev->priv;
984 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
985 unsigned long flags;
986 struct sk_buff *skb;
987 u32 ctx;
988 int count;
989 int i;
990
991 count = pRecvRep->NumberOfContexts;
992
993 /**/ dlprintk((KERN_INFO MYNAM "/receive_post_reply: "
994 "IOC returned %d buckets, freeing them...\n", count));
995
996 spin_lock_irqsave(&priv->rxfidx_lock, flags);
997 for (i = 0; i < count; i++) {
998 ctx = le32_to_cpu(pRecvRep->BucketContext[i]);
999
1000 skb = priv->RcvCtl[ctx].skb;
1001
1002 // dlprintk((KERN_INFO MYNAM ": %s: dev_name = %s\n",
1003 // IOC_AND_NETDEV_NAMES_s_s(dev)));
1004 // dlprintk((KERN_INFO MYNAM "@rpr[2], priv = %p, buckets_out addr = %p",
1005 // priv, &(priv->buckets_out)));
1006 // dlprintk((KERN_INFO MYNAM "@rpr[2] TC + 3\n"));
1007
1008 priv->RcvCtl[ctx].skb = NULL;
1009 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
1010 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
1011 dev_kfree_skb_any(skb);
1012
1013 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
1014 }
1015 spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
1016
1017 atomic_sub(count, &priv->buckets_out);
1018
1019 // for (i = 0; i < priv->max_buckets_out; i++)
1020 // if (priv->RcvCtl[i].skb != NULL)
1021 // dlprintk((KERN_INFO MYNAM "@rpr: bucket %03x "
1022 // "is still out\n", i));
1023
1024 /* dlprintk((KERN_INFO MYNAM "/receive_post_reply: freed %d buckets\n",
1025 count));
1026 */
1027 /**/ dlprintk((KERN_INFO MYNAM "@receive_post_reply: %d buckets "
1028 /**/ "remaining, %d received back since sod.\n",
1029 /**/ atomic_read(&priv->buckets_out), priv->total_received));
1030 return 0;
1031 }
1032
1033 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1034 static int
1035 mpt_lan_receive_post_reply(struct net_device *dev,
1036 LANReceivePostReply_t *pRecvRep)
1037 {
1038 struct mpt_lan_priv *priv = dev->priv;
1039 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
1040 struct sk_buff *skb, *old_skb;
1041 unsigned long flags;
1042 u32 len, ctx, offset;
1043 u32 remaining = le32_to_cpu(pRecvRep->BucketsRemaining);
1044 int count;
1045 int i, l;
1046
1047 dioprintk((KERN_INFO MYNAM ": mpt_lan_receive_post_reply called\n"));
1048 dioprintk((KERN_INFO MYNAM ": receive_post_reply: IOCStatus: %04x\n",
1049 le16_to_cpu(pRecvRep->IOCStatus)));
1050
1051 if ((le16_to_cpu(pRecvRep->IOCStatus) & MPI_IOCSTATUS_MASK) ==
1052 MPI_IOCSTATUS_LAN_CANCELED)
1053 return mpt_lan_receive_post_free(dev, pRecvRep);
1054
1055 len = le32_to_cpu(pRecvRep->PacketLength);
1056 if (len == 0) {
1057 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Got a non-TURBO "
1058 "ReceivePostReply w/ PacketLength zero!\n",
1059 IOC_AND_NETDEV_NAMES_s_s(dev));
1060 printk (KERN_ERR MYNAM ": MsgFlags = %02x, IOCStatus = %04x\n",
1061 pRecvRep->MsgFlags, le16_to_cpu(pRecvRep->IOCStatus));
1062 return -1;
1063 }
1064
1065 ctx = le32_to_cpu(pRecvRep->BucketContext[0]);
1066 count = pRecvRep->NumberOfContexts;
1067 skb = priv->RcvCtl[ctx].skb;
1068
1069 offset = le32_to_cpu(pRecvRep->PacketOffset);
1070 // if (offset != 0) {
1071 // printk (KERN_INFO MYNAM ": %s/%s: Got a ReceivePostReply "
1072 // "w/ PacketOffset %u\n",
1073 // IOC_AND_NETDEV_NAMES_s_s(dev),
1074 // offset);
1075 // }
1076
1077 dioprintk((KERN_INFO MYNAM ": %s/%s: @rpr, offset = %d, len = %d\n",
1078 IOC_AND_NETDEV_NAMES_s_s(dev),
1079 offset, len));
1080
1081 if (count > 1) {
1082 int szrem = len;
1083
1084 // dioprintk((KERN_INFO MYNAM ": %s/%s: Multiple buckets returned "
1085 // "for single packet, concatenating...\n",
1086 // IOC_AND_NETDEV_NAMES_s_s(dev)));
1087
1088 skb = (struct sk_buff *)dev_alloc_skb(len);
1089 if (!skb) {
1090 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n",
1091 IOC_AND_NETDEV_NAMES_s_s(dev),
1092 __FILE__, __LINE__);
1093 return -ENOMEM;
1094 }
1095
1096 spin_lock_irqsave(&priv->rxfidx_lock, flags);
1097 for (i = 0; i < count; i++) {
1098
1099 ctx = le32_to_cpu(pRecvRep->BucketContext[i]);
1100 old_skb = priv->RcvCtl[ctx].skb;
1101
1102 l = priv->RcvCtl[ctx].len;
1103 if (szrem < l)
1104 l = szrem;
1105
1106 // dioprintk((KERN_INFO MYNAM ": %s/%s: Buckets = %d, len = %u\n",
1107 // IOC_AND_NETDEV_NAMES_s_s(dev),
1108 // i, l));
1109
1110 pci_dma_sync_single_for_cpu(mpt_dev->pcidev,
1111 priv->RcvCtl[ctx].dma,
1112 priv->RcvCtl[ctx].len,
1113 PCI_DMA_FROMDEVICE);
1114 memcpy(skb_put(skb, l), old_skb->data, l);
1115
1116 pci_dma_sync_single_for_device(mpt_dev->pcidev,
1117 priv->RcvCtl[ctx].dma,
1118 priv->RcvCtl[ctx].len,
1119 PCI_DMA_FROMDEVICE);
1120
1121 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
1122 szrem -= l;
1123 }
1124 spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
1125
1126 } else if (len < MPT_LAN_RX_COPYBREAK) {
1127
1128 old_skb = skb;
1129
1130 skb = (struct sk_buff *)dev_alloc_skb(len);
1131 if (!skb) {
1132 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n",
1133 IOC_AND_NETDEV_NAMES_s_s(dev),
1134 __FILE__, __LINE__);
1135 return -ENOMEM;
1136 }
1137
1138 pci_dma_sync_single_for_cpu(mpt_dev->pcidev,
1139 priv->RcvCtl[ctx].dma,
1140 priv->RcvCtl[ctx].len,
1141 PCI_DMA_FROMDEVICE);
1142
1143 memcpy(skb_put(skb, len), old_skb->data, len);
1144
1145 pci_dma_sync_single_for_device(mpt_dev->pcidev,
1146 priv->RcvCtl[ctx].dma,
1147 priv->RcvCtl[ctx].len,
1148 PCI_DMA_FROMDEVICE);
1149
1150 spin_lock_irqsave(&priv->rxfidx_lock, flags);
1151 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
1152 spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
1153
1154 } else {
1155 spin_lock_irqsave(&priv->rxfidx_lock, flags);
1156
1157 priv->RcvCtl[ctx].skb = NULL;
1158
1159 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma,
1160 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE);
1161 priv->RcvCtl[ctx].dma = 0;
1162
1163 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
1164 spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
1165
1166 skb_put(skb,len);
1167 }
1168
1169 atomic_sub(count, &priv->buckets_out);
1170 priv->total_received += count;
1171
1172 if (priv->mpt_rxfidx_tail >= MPT_LAN_MAX_BUCKETS_OUT) {
1173 printk (KERN_ERR MYNAM ": %s/%s: Yoohoo! mpt_rxfidx_tail = %d, "
1174 "MPT_LAN_MAX_BUCKETS_OUT = %d\n",
1175 IOC_AND_NETDEV_NAMES_s_s(dev),
1176 priv->mpt_rxfidx_tail,
1177 MPT_LAN_MAX_BUCKETS_OUT);
1178
1179 panic("Damn it Jim! I'm a doctor, not a programmer! "
1180 "Oh, wait a sec, I am a programmer. "
1181 "And, who's Jim?!?!\n"
1182 "Arrgghh! We've done it again!\n");
1183 }
1184
1185 if (remaining == 0)
1186 printk (KERN_WARNING MYNAM ": %s/%s: WARNING - IOC out of buckets! "
1187 "(priv->buckets_out = %d)\n",
1188 IOC_AND_NETDEV_NAMES_s_s(dev),
1189 atomic_read(&priv->buckets_out));
1190 else if (remaining < 10)
1191 printk (KERN_INFO MYNAM ": %s/%s: IOC says %d buckets left. "
1192 "(priv->buckets_out = %d)\n",
1193 IOC_AND_NETDEV_NAMES_s_s(dev),
1194 remaining, atomic_read(&priv->buckets_out));
1195
1196 if ((remaining < priv->bucketthresh) &&
1197 ((atomic_read(&priv->buckets_out) - remaining) >
1198 MPT_LAN_BUCKETS_REMAIN_MISMATCH_THRESH)) {
1199
1200 printk (KERN_WARNING MYNAM " Mismatch between driver's "
1201 "buckets_out count and fw's BucketsRemaining "
1202 "count has crossed the threshold, issuing a "
1203 "LanReset to clear the fw's hashtable. You may "
1204 "want to check your /var/log/messages for \"CRC "
1205 "error\" event notifications.\n");
1206
1207 mpt_lan_reset(dev);
1208 mpt_lan_wake_post_buckets_task(dev, 0);
1209 }
1210
1211 return mpt_lan_receive_skb(dev, skb);
1212 }
1213
1214 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1215 /* Simple SGE's only at the moment */
1216
1217 static void
1218 mpt_lan_post_receive_buckets(void *dev_id)
1219 {
1220 struct net_device *dev = dev_id;
1221 struct mpt_lan_priv *priv = dev->priv;
1222 MPT_ADAPTER *mpt_dev = priv->mpt_dev;
1223 MPT_FRAME_HDR *mf;
1224 LANReceivePostRequest_t *pRecvReq;
1225 SGETransaction32_t *pTrans;
1226 SGESimple64_t *pSimple;
1227 struct sk_buff *skb;
1228 dma_addr_t dma;
1229 u32 curr, buckets, count, max;
1230 u32 len = (dev->mtu + dev->hard_header_len + 4);
1231 unsigned long flags;
1232 int i;
1233
1234 curr = atomic_read(&priv->buckets_out);
1235 buckets = (priv->max_buckets_out - curr);
1236
1237 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, Start_buckets = %u, buckets_out = %u\n",
1238 IOC_AND_NETDEV_NAMES_s_s(dev),
1239 __FUNCTION__, buckets, curr));
1240
1241 max = (mpt_dev->req_sz - MPT_LAN_RECEIVE_POST_REQUEST_SIZE) /
1242 (MPT_LAN_TRANSACTION32_SIZE + sizeof(SGESimple64_t));
1243
1244 while (buckets) {
1245 mf = mpt_get_msg_frame(LanCtx, mpt_dev);
1246 if (mf == NULL) {
1247 printk (KERN_ERR "%s: Unable to alloc request frame\n",
1248 __FUNCTION__);
1249 dioprintk((KERN_ERR "%s: %u buckets remaining\n",
1250 __FUNCTION__, buckets));
1251 goto out;
1252 }
1253 pRecvReq = (LANReceivePostRequest_t *) mf;
1254
1255 count = buckets;
1256 if (count > max)
1257 count = max;
1258
1259 pRecvReq->Function = MPI_FUNCTION_LAN_RECEIVE;
1260 pRecvReq->ChainOffset = 0;
1261 pRecvReq->MsgFlags = 0;
1262 pRecvReq->PortNumber = priv->pnum;
1263
1264 pTrans = (SGETransaction32_t *) pRecvReq->SG_List;
1265 pSimple = NULL;
1266
1267 for (i = 0; i < count; i++) {
1268 int ctx;
1269
1270 spin_lock_irqsave(&priv->rxfidx_lock, flags);
1271 if (priv->mpt_rxfidx_tail < 0) {
1272 printk (KERN_ERR "%s: Can't alloc context\n",
1273 __FUNCTION__);
1274 spin_unlock_irqrestore(&priv->rxfidx_lock,
1275 flags);
1276 break;
1277 }
1278
1279 ctx = priv->mpt_rxfidx[priv->mpt_rxfidx_tail--];
1280
1281 skb = priv->RcvCtl[ctx].skb;
1282 if (skb && (priv->RcvCtl[ctx].len != len)) {
1283 pci_unmap_single(mpt_dev->pcidev,
1284 priv->RcvCtl[ctx].dma,
1285 priv->RcvCtl[ctx].len,
1286 PCI_DMA_FROMDEVICE);
1287 dev_kfree_skb(priv->RcvCtl[ctx].skb);
1288 skb = priv->RcvCtl[ctx].skb = NULL;
1289 }
1290
1291 if (skb == NULL) {
1292 skb = dev_alloc_skb(len);
1293 if (skb == NULL) {
1294 printk (KERN_WARNING
1295 MYNAM "/%s: Can't alloc skb\n",
1296 __FUNCTION__);
1297 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx;
1298 spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
1299 break;
1300 }
1301
1302 dma = pci_map_single(mpt_dev->pcidev, skb->data,
1303 len, PCI_DMA_FROMDEVICE);
1304
1305 priv->RcvCtl[ctx].skb = skb;
1306 priv->RcvCtl[ctx].dma = dma;
1307 priv->RcvCtl[ctx].len = len;
1308 }
1309
1310 spin_unlock_irqrestore(&priv->rxfidx_lock, flags);
1311
1312 pTrans->ContextSize = sizeof(u32);
1313 pTrans->DetailsLength = 0;
1314 pTrans->Flags = 0;
1315 pTrans->TransactionContext[0] = cpu_to_le32(ctx);
1316
1317 pSimple = (SGESimple64_t *) pTrans->TransactionDetails;
1318
1319 pSimple->FlagsLength = cpu_to_le32(
1320 ((MPI_SGE_FLAGS_END_OF_BUFFER |
1321 MPI_SGE_FLAGS_SIMPLE_ELEMENT |
1322 MPI_SGE_FLAGS_64_BIT_ADDRESSING) << MPI_SGE_FLAGS_SHIFT) | len);
1323 pSimple->Address.Low = cpu_to_le32((u32) priv->RcvCtl[ctx].dma);
1324 if (sizeof(dma_addr_t) > sizeof(u32))
1325 pSimple->Address.High = cpu_to_le32((u32) ((u64) priv->RcvCtl[ctx].dma >> 32));
1326 else
1327 pSimple->Address.High = 0;
1328
1329 pTrans = (SGETransaction32_t *) (pSimple + 1);
1330 }
1331
1332 if (pSimple == NULL) {
1333 /**/ printk (KERN_WARNING MYNAM "/%s: No buckets posted\n",
1334 /**/ __FUNCTION__);
1335 mpt_free_msg_frame(mpt_dev, mf);
1336 goto out;
1337 }
1338
1339 pSimple->FlagsLength |= cpu_to_le32(MPI_SGE_FLAGS_END_OF_LIST << MPI_SGE_FLAGS_SHIFT);
1340
1341 pRecvReq->BucketCount = cpu_to_le32(i);
1342
1343 /* printk(KERN_INFO MYNAM ": posting buckets\n ");
1344 * for (i = 0; i < j + 2; i ++)
1345 * printk (" %08x", le32_to_cpu(msg[i]));
1346 * printk ("\n");
1347 */
1348
1349 mpt_put_msg_frame(LanCtx, mpt_dev, mf);
1350
1351 priv->total_posted += i;
1352 buckets -= i;
1353 atomic_add(i, &priv->buckets_out);
1354 }
1355
1356 out:
1357 dioprintk((KERN_INFO MYNAM "/%s: End_buckets = %u, priv->buckets_out = %u\n",
1358 __FUNCTION__, buckets, atomic_read(&priv->buckets_out)));
1359 dioprintk((KERN_INFO MYNAM "/%s: Posted %u buckets and received %u back\n",
1360 __FUNCTION__, priv->total_posted, priv->total_received));
1361
1362 clear_bit(0, &priv->post_buckets_active);
1363 }
1364
1365 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1366 static struct net_device *
1367 mpt_register_lan_device (MPT_ADAPTER *mpt_dev, int pnum)
1368 {
1369 struct net_device *dev = alloc_fcdev(sizeof(struct mpt_lan_priv));
1370 struct mpt_lan_priv *priv = NULL;
1371 u8 HWaddr[FC_ALEN], *a;
1372
1373 if (!dev)
1374 return NULL;
1375
1376 dev->mtu = MPT_LAN_MTU;
1377
1378 priv = netdev_priv(dev);
1379
1380 priv->mpt_dev = mpt_dev;
1381 priv->pnum = pnum;
1382
1383 memset(&priv->post_buckets_task, 0, sizeof(struct work_struct));
1384 INIT_WORK(&priv->post_buckets_task, mpt_lan_post_receive_buckets, dev);
1385 priv->post_buckets_active = 0;
1386
1387 dlprintk((KERN_INFO MYNAM "@%d: bucketlen = %d\n",
1388 __LINE__, dev->mtu + dev->hard_header_len + 4));
1389
1390 atomic_set(&priv->buckets_out, 0);
1391 priv->total_posted = 0;
1392 priv->total_received = 0;
1393 priv->max_buckets_out = max_buckets_out;
1394 if (mpt_dev->pfacts[0].MaxLanBuckets < max_buckets_out)
1395 priv->max_buckets_out = mpt_dev->pfacts[0].MaxLanBuckets;
1396
1397 dlprintk((KERN_INFO MYNAM "@%d: MaxLanBuckets=%d, max_buckets_out/priv=%d/%d\n",
1398 __LINE__,
1399 mpt_dev->pfacts[0].MaxLanBuckets,
1400 max_buckets_out,
1401 priv->max_buckets_out));
1402
1403 priv->bucketthresh = priv->max_buckets_out * 2 / 3;
1404 spin_lock_init(&priv->txfidx_lock);
1405 spin_lock_init(&priv->rxfidx_lock);
1406
1407 memset(&priv->stats, 0, sizeof(priv->stats));
1408
1409 /* Grab pre-fetched LANPage1 stuff. :-) */
1410 a = (u8 *) &mpt_dev->lan_cnfg_page1.HardwareAddressLow;
1411
1412 HWaddr[0] = a[5];
1413 HWaddr[1] = a[4];
1414 HWaddr[2] = a[3];
1415 HWaddr[3] = a[2];
1416 HWaddr[4] = a[1];
1417 HWaddr[5] = a[0];
1418
1419 dev->addr_len = FC_ALEN;
1420 memcpy(dev->dev_addr, HWaddr, FC_ALEN);
1421 memset(dev->broadcast, 0xff, FC_ALEN);
1422
1423 /* The Tx queue is 127 deep on the 909.
1424 * Give ourselves some breathing room.
1425 */
1426 priv->tx_max_out = (tx_max_out_p <= MPT_TX_MAX_OUT_LIM) ?
1427 tx_max_out_p : MPT_TX_MAX_OUT_LIM;
1428
1429 dev->open = mpt_lan_open;
1430 dev->stop = mpt_lan_close;
1431 dev->get_stats = mpt_lan_get_stats;
1432 dev->set_multicast_list = NULL;
1433 dev->change_mtu = mpt_lan_change_mtu;
1434 dev->hard_start_xmit = mpt_lan_sdu_send;
1435
1436 /* Not in 2.3.42. Need 2.3.45+ */
1437 dev->tx_timeout = mpt_lan_tx_timeout;
1438 dev->watchdog_timeo = MPT_LAN_TX_TIMEOUT;
1439
1440 dlprintk((KERN_INFO MYNAM ": Finished registering dev "
1441 "and setting initial values\n"));
1442
1443 SET_MODULE_OWNER(dev);
1444
1445 if (register_netdev(dev) != 0) {
1446 free_netdev(dev);
1447 dev = NULL;
1448 }
1449 return dev;
1450 }
1451
1452 static int
1453 mptlan_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1454 {
1455 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1456 struct net_device *dev;
1457 int i;
1458
1459 for (i = 0; i < ioc->facts.NumberOfPorts; i++) {
1460 printk(KERN_INFO MYNAM ": %s: PortNum=%x, "
1461 "ProtocolFlags=%02Xh (%c%c%c%c)\n",
1462 ioc->name, ioc->pfacts[i].PortNumber,
1463 ioc->pfacts[i].ProtocolFlags,
1464 MPT_PROTOCOL_FLAGS_c_c_c_c(
1465 ioc->pfacts[i].ProtocolFlags));
1466
1467 if (!(ioc->pfacts[i].ProtocolFlags &
1468 MPI_PORTFACTS_PROTOCOL_LAN)) {
1469 printk(KERN_INFO MYNAM ": %s: Hmmm... LAN protocol "
1470 "seems to be disabled on this adapter port!\n",
1471 ioc->name);
1472 continue;
1473 }
1474
1475 dev = mpt_register_lan_device(ioc, i);
1476 if (!dev) {
1477 printk(KERN_ERR MYNAM ": %s: Unable to register "
1478 "port%d as a LAN device\n", ioc->name,
1479 ioc->pfacts[i].PortNumber);
1480 continue;
1481 }
1482
1483 printk(KERN_INFO MYNAM ": %s: Fusion MPT LAN device "
1484 "registered as '%s'\n", ioc->name, dev->name);
1485 printk(KERN_INFO MYNAM ": %s/%s: "
1486 "LanAddr = %02X:%02X:%02X:%02X:%02X:%02X\n",
1487 IOC_AND_NETDEV_NAMES_s_s(dev),
1488 dev->dev_addr[0], dev->dev_addr[1],
1489 dev->dev_addr[2], dev->dev_addr[3],
1490 dev->dev_addr[4], dev->dev_addr[5]);
1491
1492 ioc->netdev = dev;
1493
1494 return 0;
1495 }
1496
1497 return -ENODEV;
1498 }
1499
1500 static void
1501 mptlan_remove(struct pci_dev *pdev)
1502 {
1503 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1504 struct net_device *dev = ioc->netdev;
1505
1506 if(dev != NULL) {
1507 unregister_netdev(dev);
1508 free_netdev(dev);
1509 }
1510 }
1511
1512 static struct mpt_pci_driver mptlan_driver = {
1513 .probe = mptlan_probe,
1514 .remove = mptlan_remove,
1515 };
1516
1517 static int __init mpt_lan_init (void)
1518 {
1519 show_mptmod_ver(LANAME, LANVER);
1520
1521 if ((LanCtx = mpt_register(lan_reply, MPTLAN_DRIVER)) <= 0) {
1522 printk (KERN_ERR MYNAM ": Failed to register with MPT base driver\n");
1523 return -EBUSY;
1524 }
1525
1526 /* Set the callback index to be used by driver core for turbo replies */
1527 mpt_lan_index = LanCtx;
1528
1529 dlprintk((KERN_INFO MYNAM ": assigned context of %d\n", LanCtx));
1530
1531 if (mpt_reset_register(LanCtx, mpt_lan_ioc_reset)) {
1532 printk(KERN_ERR MYNAM ": Eieee! unable to register a reset "
1533 "handler with mptbase! The world is at an end! "
1534 "Everything is fading to black! Goodbye.\n");
1535 return -EBUSY;
1536 }
1537
1538 dlprintk((KERN_INFO MYNAM ": Registered for IOC reset notifications\n"));
1539
1540 if (mpt_device_driver_register(&mptlan_driver, MPTLAN_DRIVER))
1541 dprintk((KERN_INFO MYNAM ": failed to register dd callbacks\n"));
1542 return 0;
1543 }
1544
1545 static void __exit mpt_lan_exit(void)
1546 {
1547 mpt_device_driver_deregister(MPTLAN_DRIVER);
1548 mpt_reset_deregister(LanCtx);
1549
1550 if (LanCtx >= 0) {
1551 mpt_deregister(LanCtx);
1552 LanCtx = -1;
1553 mpt_lan_index = 0;
1554 }
1555 }
1556
1557 module_init(mpt_lan_init);
1558 module_exit(mpt_lan_exit);
1559
1560 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1561 static unsigned short
1562 mpt_lan_type_trans(struct sk_buff *skb, struct net_device *dev)
1563 {
1564 struct mpt_lan_ohdr *fch = (struct mpt_lan_ohdr *)skb->data;
1565 struct fcllc *fcllc;
1566
1567 skb->mac.raw = skb->data;
1568 skb_pull(skb, sizeof(struct mpt_lan_ohdr));
1569
1570 if (fch->dtype == htons(0xffff)) {
1571 u32 *p = (u32 *) fch;
1572
1573 swab32s(p + 0);
1574 swab32s(p + 1);
1575 swab32s(p + 2);
1576 swab32s(p + 3);
1577
1578 printk (KERN_WARNING MYNAM ": %s: WARNING - Broadcast swap F/W bug detected!\n",
1579 NETDEV_PTR_TO_IOC_NAME_s(dev));
1580 printk (KERN_WARNING MYNAM ": Please update sender @ MAC_addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
1581 fch->saddr[0], fch->saddr[1], fch->saddr[2],
1582 fch->saddr[3], fch->saddr[4], fch->saddr[5]);
1583 }
1584
1585 if (*fch->daddr & 1) {
1586 if (!memcmp(fch->daddr, dev->broadcast, FC_ALEN)) {
1587 skb->pkt_type = PACKET_BROADCAST;
1588 } else {
1589 skb->pkt_type = PACKET_MULTICAST;
1590 }
1591 } else {
1592 if (memcmp(fch->daddr, dev->dev_addr, FC_ALEN)) {
1593 skb->pkt_type = PACKET_OTHERHOST;
1594 } else {
1595 skb->pkt_type = PACKET_HOST;
1596 }
1597 }
1598
1599 fcllc = (struct fcllc *)skb->data;
1600
1601 #ifdef QLOGIC_NAA_WORKAROUND
1602 {
1603 u16 source_naa = fch->stype, found = 0;
1604
1605 /* Workaround for QLogic not following RFC 2625 in regards to the NAA
1606 value. */
1607
1608 if ((source_naa & 0xF000) == 0)
1609 source_naa = swab16(source_naa);
1610
1611 if (fcllc->ethertype == htons(ETH_P_ARP))
1612 dlprintk ((KERN_INFO "mptlan/type_trans: got arp req/rep w/ naa of "
1613 "%04x.\n", source_naa));
1614
1615 if ((fcllc->ethertype == htons(ETH_P_ARP)) &&
1616 ((source_naa >> 12) != MPT_LAN_NAA_RFC2625)){
1617 struct NAA_Hosed *nh, *prevnh;
1618 int i;
1619
1620 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep from "
1621 "system with non-RFC 2625 NAA value (%04x).\n",
1622 source_naa));
1623
1624 write_lock_irq(&bad_naa_lock);
1625 for (prevnh = nh = mpt_bad_naa; nh != NULL;
1626 prevnh=nh, nh=nh->next) {
1627 if ((nh->ieee[0] == fch->saddr[0]) &&
1628 (nh->ieee[1] == fch->saddr[1]) &&
1629 (nh->ieee[2] == fch->saddr[2]) &&
1630 (nh->ieee[3] == fch->saddr[3]) &&
1631 (nh->ieee[4] == fch->saddr[4]) &&
1632 (nh->ieee[5] == fch->saddr[5])) {
1633 found = 1;
1634 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Re"
1635 "q/Rep w/ bad NAA from system already"
1636 " in DB.\n"));
1637 break;
1638 }
1639 }
1640
1641 if ((!found) && (nh == NULL)) {
1642
1643 nh = kmalloc(sizeof(struct NAA_Hosed), GFP_KERNEL);
1644 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep w/"
1645 " bad NAA from system not yet in DB.\n"));
1646
1647 if (nh != NULL) {
1648 nh->next = NULL;
1649 if (!mpt_bad_naa)
1650 mpt_bad_naa = nh;
1651 if (prevnh)
1652 prevnh->next = nh;
1653
1654 nh->NAA = source_naa; /* Set the S_NAA value. */
1655 for (i = 0; i < FC_ALEN; i++)
1656 nh->ieee[i] = fch->saddr[i];
1657 dlprintk ((KERN_INFO "Got ARP from %02x:%02x:%02x:%02x:"
1658 "%02x:%02x with non-compliant S_NAA value.\n",
1659 fch->saddr[0], fch->saddr[1], fch->saddr[2],
1660 fch->saddr[3], fch->saddr[4],fch->saddr[5]));
1661 } else {
1662 printk (KERN_ERR "mptlan/type_trans: Unable to"
1663 " kmalloc a NAA_Hosed struct.\n");
1664 }
1665 } else if (!found) {
1666 printk (KERN_ERR "mptlan/type_trans: found not"
1667 " set, but nh isn't null. Evil "
1668 "funkiness abounds.\n");
1669 }
1670 write_unlock_irq(&bad_naa_lock);
1671 }
1672 }
1673 #endif
1674
1675 /* Strip the SNAP header from ARP packets since we don't
1676 * pass them through to the 802.2/SNAP layers.
1677 */
1678 if (fcllc->dsap == EXTENDED_SAP &&
1679 (fcllc->ethertype == htons(ETH_P_IP) ||
1680 fcllc->ethertype == htons(ETH_P_ARP))) {
1681 skb_pull(skb, sizeof(struct fcllc));
1682 return fcllc->ethertype;
1683 }
1684
1685 return htons(ETH_P_802_2);
1686 }
1687
1688 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
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