1 /* 2 * linux/drivers/message/fusion/mptlan.c 3 * IP Over Fibre Channel device driver. 4 * For use with LSI Logic Fibre Channel PCI chip/adapters 5 * running LSI Logic Fusion MPT (Message Passing Technology) firmware. 6 * 7 * Copyright (c) 2000-2005 LSI Logic Corporation 8 * 9 */ 10 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 11 /* 12 This program is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; version 2 of the License. 15 16 This program is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 GNU General Public License for more details. 20 21 NO WARRANTY 22 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR 23 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT 24 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, 25 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is 26 solely responsible for determining the appropriateness of using and 27 distributing the Program and assumes all risks associated with its 28 exercise of rights under this Agreement, including but not limited to 29 the risks and costs of program errors, damage to or loss of data, 30 programs or equipment, and unavailability or interruption of operations. 31 32 DISCLAIMER OF LIABILITY 33 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY 34 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND 36 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 37 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 38 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED 39 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 40 41 You should have received a copy of the GNU General Public License 42 along with this program; if not, write to the Free Software 43 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 44 */ 45 46 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 47 /* 48 * Define statements used for debugging 49 */ 50 //#define MPT_LAN_IO_DEBUG 51 52 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 53 54 #include "mptlan.h" 55 #include <linux/init.h> 56 #include <linux/module.h> 57 #include <linux/fs.h> 58 59 #define MYNAM "mptlan" 60 61 MODULE_LICENSE("GPL"); 62 63 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 64 /* 65 * MPT LAN message sizes without variable part. 66 */ 67 #define MPT_LAN_RECEIVE_POST_REQUEST_SIZE \ 68 (sizeof(LANReceivePostRequest_t) - sizeof(SGE_MPI_UNION)) 69 70 #define MPT_LAN_TRANSACTION32_SIZE \ 71 (sizeof(SGETransaction32_t) - sizeof(u32)) 72 73 /* 74 * Fusion MPT LAN private structures 75 */ 76 77 struct NAA_Hosed { 78 u16 NAA; 79 u8 ieee[FC_ALEN]; 80 struct NAA_Hosed *next; 81 }; 82 83 struct BufferControl { 84 struct sk_buff *skb; 85 dma_addr_t dma; 86 unsigned int len; 87 }; 88 89 struct mpt_lan_priv { 90 MPT_ADAPTER *mpt_dev; 91 u8 pnum; /* Port number in the IOC. This is not a Unix network port! */ 92 93 atomic_t buckets_out; /* number of unused buckets on IOC */ 94 int bucketthresh; /* Send more when this many left */ 95 96 int *mpt_txfidx; /* Free Tx Context list */ 97 int mpt_txfidx_tail; 98 spinlock_t txfidx_lock; 99 100 int *mpt_rxfidx; /* Free Rx Context list */ 101 int mpt_rxfidx_tail; 102 spinlock_t rxfidx_lock; 103 104 struct BufferControl *RcvCtl; /* Receive BufferControl structs */ 105 struct BufferControl *SendCtl; /* Send BufferControl structs */ 106 107 int max_buckets_out; /* Max buckets to send to IOC */ 108 int tx_max_out; /* IOC's Tx queue len */ 109 110 u32 total_posted; 111 u32 total_received; 112 struct net_device_stats stats; /* Per device statistics */ 113 114 struct work_struct post_buckets_task; 115 unsigned long post_buckets_active; 116 }; 117 118 struct mpt_lan_ohdr { 119 u16 dtype; 120 u8 daddr[FC_ALEN]; 121 u16 stype; 122 u8 saddr[FC_ALEN]; 123 }; 124 125 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 126 127 /* 128 * Forward protos... 129 */ 130 static int lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, 131 MPT_FRAME_HDR *reply); 132 static int mpt_lan_open(struct net_device *dev); 133 static int mpt_lan_reset(struct net_device *dev); 134 static int mpt_lan_close(struct net_device *dev); 135 static void mpt_lan_post_receive_buckets(void *dev_id); 136 static void mpt_lan_wake_post_buckets_task(struct net_device *dev, 137 int priority); 138 static int mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg); 139 static int mpt_lan_receive_post_reply(struct net_device *dev, 140 LANReceivePostReply_t *pRecvRep); 141 static int mpt_lan_send_turbo(struct net_device *dev, u32 tmsg); 142 static int mpt_lan_send_reply(struct net_device *dev, 143 LANSendReply_t *pSendRep); 144 static int mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase); 145 static int mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply); 146 static unsigned short mpt_lan_type_trans(struct sk_buff *skb, 147 struct net_device *dev); 148 149 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 150 /* 151 * Fusion MPT LAN private data 152 */ 153 static int LanCtx = -1; 154 155 static u32 max_buckets_out = 127; 156 static u32 tx_max_out_p = 127 - 16; 157 158 #ifdef QLOGIC_NAA_WORKAROUND 159 static struct NAA_Hosed *mpt_bad_naa = NULL; 160 DEFINE_RWLOCK(bad_naa_lock); 161 #endif 162 163 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 164 /* 165 * Fusion MPT LAN external data 166 */ 167 extern int mpt_lan_index; 168 169 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 170 /** 171 * lan_reply - Handle all data sent from the hardware. 172 * @ioc: Pointer to MPT_ADAPTER structure 173 * @mf: Pointer to original MPT request frame (NULL if TurboReply) 174 * @reply: Pointer to MPT reply frame 175 * 176 * Returns 1 indicating original alloc'd request frame ptr 177 * should be freed, or 0 if it shouldn't. 178 */ 179 static int 180 lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *reply) 181 { 182 struct net_device *dev = ioc->netdev; 183 int FreeReqFrame = 0; 184 185 dioprintk((KERN_INFO MYNAM ": %s/%s: Got reply.\n", 186 IOC_AND_NETDEV_NAMES_s_s(dev))); 187 188 // dioprintk((KERN_INFO MYNAM "@lan_reply: mf = %p, reply = %p\n", 189 // mf, reply)); 190 191 if (mf == NULL) { 192 u32 tmsg = CAST_PTR_TO_U32(reply); 193 194 dioprintk((KERN_INFO MYNAM ": %s/%s: @lan_reply, tmsg %08x\n", 195 IOC_AND_NETDEV_NAMES_s_s(dev), 196 tmsg)); 197 198 switch (GET_LAN_FORM(tmsg)) { 199 200 // NOTE! (Optimization) First case here is now caught in 201 // mptbase.c::mpt_interrupt() routine and callcack here 202 // is now skipped for this case! 203 #if 0 204 case LAN_REPLY_FORM_MESSAGE_CONTEXT: 205 // dioprintk((KERN_INFO MYNAM "/lan_reply: " 206 // "MessageContext turbo reply received\n")); 207 FreeReqFrame = 1; 208 break; 209 #endif 210 211 case LAN_REPLY_FORM_SEND_SINGLE: 212 // dioprintk((MYNAM "/lan_reply: " 213 // "calling mpt_lan_send_reply (turbo)\n")); 214 215 // Potential BUG here? 216 // FreeReqFrame = mpt_lan_send_turbo(dev, tmsg); 217 // If/when mpt_lan_send_turbo would return 1 here, 218 // calling routine (mptbase.c|mpt_interrupt) 219 // would Oops because mf has already been set 220 // to NULL. So after return from this func, 221 // mpt_interrupt() will attempt to put (NULL) mf ptr 222 // item back onto its adapter FreeQ - Oops!:-( 223 // It's Ok, since mpt_lan_send_turbo() *currently* 224 // always returns 0, but..., just in case: 225 226 (void) mpt_lan_send_turbo(dev, tmsg); 227 FreeReqFrame = 0; 228 229 break; 230 231 case LAN_REPLY_FORM_RECEIVE_SINGLE: 232 // dioprintk((KERN_INFO MYNAM "@lan_reply: " 233 // "rcv-Turbo = %08x\n", tmsg)); 234 mpt_lan_receive_post_turbo(dev, tmsg); 235 break; 236 237 default: 238 printk (KERN_ERR MYNAM "/lan_reply: Got a turbo reply " 239 "that I don't know what to do with\n"); 240 241 /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */ 242 243 break; 244 } 245 246 return FreeReqFrame; 247 } 248 249 // msg = (u32 *) reply; 250 // dioprintk((KERN_INFO MYNAM "@lan_reply: msg = %08x %08x %08x %08x\n", 251 // le32_to_cpu(msg[0]), le32_to_cpu(msg[1]), 252 // le32_to_cpu(msg[2]), le32_to_cpu(msg[3]))); 253 // dioprintk((KERN_INFO MYNAM "@lan_reply: Function = %02xh\n", 254 // reply->u.hdr.Function)); 255 256 switch (reply->u.hdr.Function) { 257 258 case MPI_FUNCTION_LAN_SEND: 259 { 260 LANSendReply_t *pSendRep; 261 262 pSendRep = (LANSendReply_t *) reply; 263 FreeReqFrame = mpt_lan_send_reply(dev, pSendRep); 264 break; 265 } 266 267 case MPI_FUNCTION_LAN_RECEIVE: 268 { 269 LANReceivePostReply_t *pRecvRep; 270 271 pRecvRep = (LANReceivePostReply_t *) reply; 272 if (pRecvRep->NumberOfContexts) { 273 mpt_lan_receive_post_reply(dev, pRecvRep); 274 if (!(pRecvRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY)) 275 FreeReqFrame = 1; 276 } else 277 dioprintk((KERN_INFO MYNAM "@lan_reply: zero context " 278 "ReceivePostReply received.\n")); 279 break; 280 } 281 282 case MPI_FUNCTION_LAN_RESET: 283 /* Just a default reply. Might want to check it to 284 * make sure that everything went ok. 285 */ 286 FreeReqFrame = 1; 287 break; 288 289 case MPI_FUNCTION_EVENT_NOTIFICATION: 290 case MPI_FUNCTION_EVENT_ACK: 291 /* _EVENT_NOTIFICATION should NOT come down this path any more. 292 * Should be routed to mpt_lan_event_process(), but just in case... 293 */ 294 FreeReqFrame = 1; 295 break; 296 297 default: 298 printk (KERN_ERR MYNAM "/lan_reply: Got a non-turbo " 299 "reply that I don't know what to do with\n"); 300 301 /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */ 302 FreeReqFrame = 1; 303 304 break; 305 } 306 307 return FreeReqFrame; 308 } 309 310 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 311 static int 312 mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase) 313 { 314 struct net_device *dev = ioc->netdev; 315 struct mpt_lan_priv *priv; 316 317 if (dev == NULL) 318 return(1); 319 else 320 priv = netdev_priv(dev); 321 322 dlprintk((KERN_INFO MYNAM ": IOC %s_reset routed to LAN driver!\n", 323 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : ( 324 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post"))); 325 326 if (priv->mpt_rxfidx == NULL) 327 return (1); 328 329 if (reset_phase == MPT_IOC_SETUP_RESET) { 330 ; 331 } else if (reset_phase == MPT_IOC_PRE_RESET) { 332 int i; 333 unsigned long flags; 334 335 netif_stop_queue(dev); 336 337 dlprintk ((KERN_INFO "mptlan/ioc_reset: called netif_stop_queue for %s.\n", dev->name)); 338 339 atomic_set(&priv->buckets_out, 0); 340 341 /* Reset Rx Free Tail index and re-populate the queue. */ 342 spin_lock_irqsave(&priv->rxfidx_lock, flags); 343 priv->mpt_rxfidx_tail = -1; 344 for (i = 0; i < priv->max_buckets_out; i++) 345 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i; 346 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 347 } else { 348 mpt_lan_post_receive_buckets(dev); 349 netif_wake_queue(dev); 350 } 351 352 return 1; 353 } 354 355 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 356 static int 357 mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply) 358 { 359 dlprintk((KERN_INFO MYNAM ": MPT event routed to LAN driver!\n")); 360 361 switch (le32_to_cpu(pEvReply->Event)) { 362 case MPI_EVENT_NONE: /* 00 */ 363 case MPI_EVENT_LOG_DATA: /* 01 */ 364 case MPI_EVENT_STATE_CHANGE: /* 02 */ 365 case MPI_EVENT_UNIT_ATTENTION: /* 03 */ 366 case MPI_EVENT_IOC_BUS_RESET: /* 04 */ 367 case MPI_EVENT_EXT_BUS_RESET: /* 05 */ 368 case MPI_EVENT_RESCAN: /* 06 */ 369 /* Ok, do we need to do anything here? As far as 370 I can tell, this is when a new device gets added 371 to the loop. */ 372 case MPI_EVENT_LINK_STATUS_CHANGE: /* 07 */ 373 case MPI_EVENT_LOOP_STATE_CHANGE: /* 08 */ 374 case MPI_EVENT_LOGOUT: /* 09 */ 375 case MPI_EVENT_EVENT_CHANGE: /* 0A */ 376 default: 377 break; 378 } 379 380 /* 381 * NOTE: pEvent->AckRequired handling now done in mptbase.c; 382 * Do NOT do it here now! 383 */ 384 385 return 1; 386 } 387 388 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 389 static int 390 mpt_lan_open(struct net_device *dev) 391 { 392 struct mpt_lan_priv *priv = netdev_priv(dev); 393 int i; 394 395 if (mpt_lan_reset(dev) != 0) { 396 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 397 398 printk (KERN_WARNING MYNAM "/lan_open: lan_reset failed."); 399 400 if (mpt_dev->active) 401 printk ("The ioc is active. Perhaps it needs to be" 402 " reset?\n"); 403 else 404 printk ("The ioc in inactive, most likely in the " 405 "process of being reset. Please try again in " 406 "a moment.\n"); 407 } 408 409 priv->mpt_txfidx = kmalloc(priv->tx_max_out * sizeof(int), GFP_KERNEL); 410 if (priv->mpt_txfidx == NULL) 411 goto out; 412 priv->mpt_txfidx_tail = -1; 413 414 priv->SendCtl = kmalloc(priv->tx_max_out * sizeof(struct BufferControl), 415 GFP_KERNEL); 416 if (priv->SendCtl == NULL) 417 goto out_mpt_txfidx; 418 for (i = 0; i < priv->tx_max_out; i++) { 419 memset(&priv->SendCtl[i], 0, sizeof(struct BufferControl)); 420 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = i; 421 } 422 423 dlprintk((KERN_INFO MYNAM "@lo: Finished initializing SendCtl\n")); 424 425 priv->mpt_rxfidx = kmalloc(priv->max_buckets_out * sizeof(int), 426 GFP_KERNEL); 427 if (priv->mpt_rxfidx == NULL) 428 goto out_SendCtl; 429 priv->mpt_rxfidx_tail = -1; 430 431 priv->RcvCtl = kmalloc(priv->max_buckets_out * 432 sizeof(struct BufferControl), 433 GFP_KERNEL); 434 if (priv->RcvCtl == NULL) 435 goto out_mpt_rxfidx; 436 for (i = 0; i < priv->max_buckets_out; i++) { 437 memset(&priv->RcvCtl[i], 0, sizeof(struct BufferControl)); 438 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i; 439 } 440 441 /**/ dlprintk((KERN_INFO MYNAM "/lo: txfidx contains - ")); 442 /**/ for (i = 0; i < priv->tx_max_out; i++) 443 /**/ dlprintk((" %xh", priv->mpt_txfidx[i])); 444 /**/ dlprintk(("\n")); 445 446 dlprintk((KERN_INFO MYNAM "/lo: Finished initializing RcvCtl\n")); 447 448 mpt_lan_post_receive_buckets(dev); 449 printk(KERN_INFO MYNAM ": %s/%s: interface up & active\n", 450 IOC_AND_NETDEV_NAMES_s_s(dev)); 451 452 if (mpt_event_register(LanCtx, mpt_lan_event_process) != 0) { 453 printk (KERN_WARNING MYNAM "/lo: Unable to register for Event" 454 " Notifications. This is a bad thing! We're not going " 455 "to go ahead, but I'd be leery of system stability at " 456 "this point.\n"); 457 } 458 459 netif_start_queue(dev); 460 dlprintk((KERN_INFO MYNAM "/lo: Done.\n")); 461 462 return 0; 463 out_mpt_rxfidx: 464 kfree(priv->mpt_rxfidx); 465 priv->mpt_rxfidx = NULL; 466 out_SendCtl: 467 kfree(priv->SendCtl); 468 priv->SendCtl = NULL; 469 out_mpt_txfidx: 470 kfree(priv->mpt_txfidx); 471 priv->mpt_txfidx = NULL; 472 out: return -ENOMEM; 473 } 474 475 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 476 /* Send a LanReset message to the FW. This should result in the FW returning 477 any buckets it still has. */ 478 static int 479 mpt_lan_reset(struct net_device *dev) 480 { 481 MPT_FRAME_HDR *mf; 482 LANResetRequest_t *pResetReq; 483 struct mpt_lan_priv *priv = netdev_priv(dev); 484 485 mf = mpt_get_msg_frame(LanCtx, priv->mpt_dev); 486 487 if (mf == NULL) { 488 /* dlprintk((KERN_ERR MYNAM "/reset: Evil funkiness abounds! " 489 "Unable to allocate a request frame.\n")); 490 */ 491 return -1; 492 } 493 494 pResetReq = (LANResetRequest_t *) mf; 495 496 pResetReq->Function = MPI_FUNCTION_LAN_RESET; 497 pResetReq->ChainOffset = 0; 498 pResetReq->Reserved = 0; 499 pResetReq->PortNumber = priv->pnum; 500 pResetReq->MsgFlags = 0; 501 pResetReq->Reserved2 = 0; 502 503 mpt_put_msg_frame(LanCtx, priv->mpt_dev, mf); 504 505 return 0; 506 } 507 508 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 509 static int 510 mpt_lan_close(struct net_device *dev) 511 { 512 struct mpt_lan_priv *priv = netdev_priv(dev); 513 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 514 unsigned int timeout; 515 int i; 516 517 dlprintk((KERN_INFO MYNAM ": mpt_lan_close called\n")); 518 519 mpt_event_deregister(LanCtx); 520 521 dlprintk((KERN_INFO MYNAM ":lan_close: Posted %d buckets " 522 "since driver was loaded, %d still out\n", 523 priv->total_posted,atomic_read(&priv->buckets_out))); 524 525 netif_stop_queue(dev); 526 527 mpt_lan_reset(dev); 528 529 timeout = 2 * HZ; 530 while (atomic_read(&priv->buckets_out) && --timeout) { 531 set_current_state(TASK_INTERRUPTIBLE); 532 schedule_timeout(1); 533 } 534 535 for (i = 0; i < priv->max_buckets_out; i++) { 536 if (priv->RcvCtl[i].skb != NULL) { 537 /**/ dlprintk((KERN_INFO MYNAM "/lan_close: bucket %05x " 538 /**/ "is still out\n", i)); 539 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[i].dma, 540 priv->RcvCtl[i].len, 541 PCI_DMA_FROMDEVICE); 542 dev_kfree_skb(priv->RcvCtl[i].skb); 543 } 544 } 545 546 kfree(priv->RcvCtl); 547 kfree(priv->mpt_rxfidx); 548 549 for (i = 0; i < priv->tx_max_out; i++) { 550 if (priv->SendCtl[i].skb != NULL) { 551 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[i].dma, 552 priv->SendCtl[i].len, 553 PCI_DMA_TODEVICE); 554 dev_kfree_skb(priv->SendCtl[i].skb); 555 } 556 } 557 558 kfree(priv->SendCtl); 559 kfree(priv->mpt_txfidx); 560 561 atomic_set(&priv->buckets_out, 0); 562 563 printk(KERN_INFO MYNAM ": %s/%s: interface down & inactive\n", 564 IOC_AND_NETDEV_NAMES_s_s(dev)); 565 566 return 0; 567 } 568 569 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 570 static struct net_device_stats * 571 mpt_lan_get_stats(struct net_device *dev) 572 { 573 struct mpt_lan_priv *priv = netdev_priv(dev); 574 575 return (struct net_device_stats *) &priv->stats; 576 } 577 578 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 579 static int 580 mpt_lan_change_mtu(struct net_device *dev, int new_mtu) 581 { 582 if ((new_mtu < MPT_LAN_MIN_MTU) || (new_mtu > MPT_LAN_MAX_MTU)) 583 return -EINVAL; 584 dev->mtu = new_mtu; 585 return 0; 586 } 587 588 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 589 /* Tx timeout handler. */ 590 static void 591 mpt_lan_tx_timeout(struct net_device *dev) 592 { 593 struct mpt_lan_priv *priv = netdev_priv(dev); 594 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 595 596 if (mpt_dev->active) { 597 dlprintk (("mptlan/tx_timeout: calling netif_wake_queue for %s.\n", dev->name)); 598 netif_wake_queue(dev); 599 } 600 } 601 602 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 603 //static inline int 604 static int 605 mpt_lan_send_turbo(struct net_device *dev, u32 tmsg) 606 { 607 struct mpt_lan_priv *priv = netdev_priv(dev); 608 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 609 struct sk_buff *sent; 610 unsigned long flags; 611 u32 ctx; 612 613 ctx = GET_LAN_BUFFER_CONTEXT(tmsg); 614 sent = priv->SendCtl[ctx].skb; 615 616 priv->stats.tx_packets++; 617 priv->stats.tx_bytes += sent->len; 618 619 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.\n", 620 IOC_AND_NETDEV_NAMES_s_s(dev), 621 __FUNCTION__, sent)); 622 623 priv->SendCtl[ctx].skb = NULL; 624 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma, 625 priv->SendCtl[ctx].len, PCI_DMA_TODEVICE); 626 dev_kfree_skb_irq(sent); 627 628 spin_lock_irqsave(&priv->txfidx_lock, flags); 629 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx; 630 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 631 632 netif_wake_queue(dev); 633 return 0; 634 } 635 636 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 637 static int 638 mpt_lan_send_reply(struct net_device *dev, LANSendReply_t *pSendRep) 639 { 640 struct mpt_lan_priv *priv = netdev_priv(dev); 641 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 642 struct sk_buff *sent; 643 unsigned long flags; 644 int FreeReqFrame = 0; 645 u32 *pContext; 646 u32 ctx; 647 u8 count; 648 649 count = pSendRep->NumberOfContexts; 650 651 dioprintk((KERN_INFO MYNAM ": send_reply: IOCStatus: %04x\n", 652 le16_to_cpu(pSendRep->IOCStatus))); 653 654 /* Add check for Loginfo Flag in IOCStatus */ 655 656 switch (le16_to_cpu(pSendRep->IOCStatus) & MPI_IOCSTATUS_MASK) { 657 case MPI_IOCSTATUS_SUCCESS: 658 priv->stats.tx_packets += count; 659 break; 660 661 case MPI_IOCSTATUS_LAN_CANCELED: 662 case MPI_IOCSTATUS_LAN_TRANSMIT_ABORTED: 663 break; 664 665 case MPI_IOCSTATUS_INVALID_SGL: 666 priv->stats.tx_errors += count; 667 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Invalid SGL sent to IOC!\n", 668 IOC_AND_NETDEV_NAMES_s_s(dev)); 669 goto out; 670 671 default: 672 priv->stats.tx_errors += count; 673 break; 674 } 675 676 pContext = &pSendRep->BufferContext; 677 678 spin_lock_irqsave(&priv->txfidx_lock, flags); 679 while (count > 0) { 680 ctx = GET_LAN_BUFFER_CONTEXT(le32_to_cpu(*pContext)); 681 682 sent = priv->SendCtl[ctx].skb; 683 priv->stats.tx_bytes += sent->len; 684 685 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.\n", 686 IOC_AND_NETDEV_NAMES_s_s(dev), 687 __FUNCTION__, sent)); 688 689 priv->SendCtl[ctx].skb = NULL; 690 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma, 691 priv->SendCtl[ctx].len, PCI_DMA_TODEVICE); 692 dev_kfree_skb_irq(sent); 693 694 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx; 695 696 pContext++; 697 count--; 698 } 699 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 700 701 out: 702 if (!(pSendRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY)) 703 FreeReqFrame = 1; 704 705 netif_wake_queue(dev); 706 return FreeReqFrame; 707 } 708 709 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 710 static int 711 mpt_lan_sdu_send (struct sk_buff *skb, struct net_device *dev) 712 { 713 struct mpt_lan_priv *priv = netdev_priv(dev); 714 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 715 MPT_FRAME_HDR *mf; 716 LANSendRequest_t *pSendReq; 717 SGETransaction32_t *pTrans; 718 SGESimple64_t *pSimple; 719 dma_addr_t dma; 720 unsigned long flags; 721 int ctx; 722 u16 cur_naa = 0x1000; 723 724 dioprintk((KERN_INFO MYNAM ": %s called, skb_addr = %p\n", 725 __FUNCTION__, skb)); 726 727 spin_lock_irqsave(&priv->txfidx_lock, flags); 728 if (priv->mpt_txfidx_tail < 0) { 729 netif_stop_queue(dev); 730 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 731 732 printk (KERN_ERR "%s: no tx context available: %u\n", 733 __FUNCTION__, priv->mpt_txfidx_tail); 734 return 1; 735 } 736 737 mf = mpt_get_msg_frame(LanCtx, mpt_dev); 738 if (mf == NULL) { 739 netif_stop_queue(dev); 740 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 741 742 printk (KERN_ERR "%s: Unable to alloc request frame\n", 743 __FUNCTION__); 744 return 1; 745 } 746 747 ctx = priv->mpt_txfidx[priv->mpt_txfidx_tail--]; 748 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 749 750 // dioprintk((KERN_INFO MYNAM ": %s/%s: Creating new msg frame (send).\n", 751 // IOC_AND_NETDEV_NAMES_s_s(dev))); 752 753 pSendReq = (LANSendRequest_t *) mf; 754 755 /* Set the mac.raw pointer, since this apparently isn't getting 756 * done before we get the skb. Pull the data pointer past the mac data. 757 */ 758 skb->mac.raw = skb->data; 759 skb_pull(skb, 12); 760 761 dma = pci_map_single(mpt_dev->pcidev, skb->data, skb->len, 762 PCI_DMA_TODEVICE); 763 764 priv->SendCtl[ctx].skb = skb; 765 priv->SendCtl[ctx].dma = dma; 766 priv->SendCtl[ctx].len = skb->len; 767 768 /* Message Header */ 769 pSendReq->Reserved = 0; 770 pSendReq->Function = MPI_FUNCTION_LAN_SEND; 771 pSendReq->ChainOffset = 0; 772 pSendReq->Reserved2 = 0; 773 pSendReq->MsgFlags = 0; 774 pSendReq->PortNumber = priv->pnum; 775 776 /* Transaction Context Element */ 777 pTrans = (SGETransaction32_t *) pSendReq->SG_List; 778 779 /* No Flags, 8 bytes of Details, 32bit Context (bloody turbo replies) */ 780 pTrans->ContextSize = sizeof(u32); 781 pTrans->DetailsLength = 2 * sizeof(u32); 782 pTrans->Flags = 0; 783 pTrans->TransactionContext[0] = cpu_to_le32(ctx); 784 785 // dioprintk((KERN_INFO MYNAM ": %s/%s: BC = %08x, skb = %p, buff = %p\n", 786 // IOC_AND_NETDEV_NAMES_s_s(dev), 787 // ctx, skb, skb->data)); 788 789 #ifdef QLOGIC_NAA_WORKAROUND 790 { 791 struct NAA_Hosed *nh; 792 793 /* Munge the NAA for Tx packets to QLogic boards, which don't follow 794 RFC 2625. The longer I look at this, the more my opinion of Qlogic 795 drops. */ 796 read_lock_irq(&bad_naa_lock); 797 for (nh = mpt_bad_naa; nh != NULL; nh=nh->next) { 798 if ((nh->ieee[0] == skb->mac.raw[0]) && 799 (nh->ieee[1] == skb->mac.raw[1]) && 800 (nh->ieee[2] == skb->mac.raw[2]) && 801 (nh->ieee[3] == skb->mac.raw[3]) && 802 (nh->ieee[4] == skb->mac.raw[4]) && 803 (nh->ieee[5] == skb->mac.raw[5])) { 804 cur_naa = nh->NAA; 805 dlprintk ((KERN_INFO "mptlan/sdu_send: using NAA value " 806 "= %04x.\n", cur_naa)); 807 break; 808 } 809 } 810 read_unlock_irq(&bad_naa_lock); 811 } 812 #endif 813 814 pTrans->TransactionDetails[0] = cpu_to_le32((cur_naa << 16) | 815 (skb->mac.raw[0] << 8) | 816 (skb->mac.raw[1] << 0)); 817 pTrans->TransactionDetails[1] = cpu_to_le32((skb->mac.raw[2] << 24) | 818 (skb->mac.raw[3] << 16) | 819 (skb->mac.raw[4] << 8) | 820 (skb->mac.raw[5] << 0)); 821 822 pSimple = (SGESimple64_t *) &pTrans->TransactionDetails[2]; 823 824 /* If we ever decide to send more than one Simple SGE per LANSend, then 825 we will need to make sure that LAST_ELEMENT only gets set on the 826 last one. Otherwise, bad voodoo and evil funkiness will commence. */ 827 pSimple->FlagsLength = cpu_to_le32( 828 ((MPI_SGE_FLAGS_LAST_ELEMENT | 829 MPI_SGE_FLAGS_END_OF_BUFFER | 830 MPI_SGE_FLAGS_SIMPLE_ELEMENT | 831 MPI_SGE_FLAGS_SYSTEM_ADDRESS | 832 MPI_SGE_FLAGS_HOST_TO_IOC | 833 MPI_SGE_FLAGS_64_BIT_ADDRESSING | 834 MPI_SGE_FLAGS_END_OF_LIST) << MPI_SGE_FLAGS_SHIFT) | 835 skb->len); 836 pSimple->Address.Low = cpu_to_le32((u32) dma); 837 if (sizeof(dma_addr_t) > sizeof(u32)) 838 pSimple->Address.High = cpu_to_le32((u32) ((u64) dma >> 32)); 839 else 840 pSimple->Address.High = 0; 841 842 mpt_put_msg_frame (LanCtx, mpt_dev, mf); 843 dev->trans_start = jiffies; 844 845 dioprintk((KERN_INFO MYNAM ": %s/%s: Sending packet. FlagsLength = %08x.\n", 846 IOC_AND_NETDEV_NAMES_s_s(dev), 847 le32_to_cpu(pSimple->FlagsLength))); 848 849 return 0; 850 } 851 852 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 853 static inline void 854 mpt_lan_wake_post_buckets_task(struct net_device *dev, int priority) 855 /* 856 * @priority: 0 = put it on the timer queue, 1 = put it on the immediate queue 857 */ 858 { 859 struct mpt_lan_priv *priv = dev->priv; 860 861 if (test_and_set_bit(0, &priv->post_buckets_active) == 0) { 862 if (priority) { 863 schedule_work(&priv->post_buckets_task); 864 } else { 865 schedule_delayed_work(&priv->post_buckets_task, 1); 866 dioprintk((KERN_INFO MYNAM ": post_buckets queued on " 867 "timer.\n")); 868 } 869 dioprintk((KERN_INFO MYNAM ": %s/%s: Queued post_buckets task.\n", 870 IOC_AND_NETDEV_NAMES_s_s(dev) )); 871 } 872 } 873 874 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 875 static inline int 876 mpt_lan_receive_skb(struct net_device *dev, struct sk_buff *skb) 877 { 878 struct mpt_lan_priv *priv = dev->priv; 879 880 skb->protocol = mpt_lan_type_trans(skb, dev); 881 882 dioprintk((KERN_INFO MYNAM ": %s/%s: Incoming packet (%d bytes) " 883 "delivered to upper level.\n", 884 IOC_AND_NETDEV_NAMES_s_s(dev), skb->len)); 885 886 priv->stats.rx_bytes += skb->len; 887 priv->stats.rx_packets++; 888 889 skb->dev = dev; 890 netif_rx(skb); 891 892 dioprintk((MYNAM "/receive_skb: %d buckets remaining\n", 893 atomic_read(&priv->buckets_out))); 894 895 if (atomic_read(&priv->buckets_out) < priv->bucketthresh) 896 mpt_lan_wake_post_buckets_task(dev, 1); 897 898 dioprintk((KERN_INFO MYNAM "/receive_post_reply: %d buckets " 899 "remaining, %d received back since sod\n", 900 atomic_read(&priv->buckets_out), priv->total_received)); 901 902 return 0; 903 } 904 905 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 906 //static inline int 907 static int 908 mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg) 909 { 910 struct mpt_lan_priv *priv = dev->priv; 911 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 912 struct sk_buff *skb, *old_skb; 913 unsigned long flags; 914 u32 ctx, len; 915 916 ctx = GET_LAN_BUCKET_CONTEXT(tmsg); 917 skb = priv->RcvCtl[ctx].skb; 918 919 len = GET_LAN_PACKET_LENGTH(tmsg); 920 921 if (len < MPT_LAN_RX_COPYBREAK) { 922 old_skb = skb; 923 924 skb = (struct sk_buff *)dev_alloc_skb(len); 925 if (!skb) { 926 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 927 IOC_AND_NETDEV_NAMES_s_s(dev), 928 __FILE__, __LINE__); 929 return -ENOMEM; 930 } 931 932 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 933 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 934 935 memcpy(skb_put(skb, len), old_skb->data, len); 936 937 pci_dma_sync_single_for_device(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 938 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 939 goto out; 940 } 941 942 skb_put(skb, len); 943 944 priv->RcvCtl[ctx].skb = NULL; 945 946 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 947 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 948 949 out: 950 spin_lock_irqsave(&priv->rxfidx_lock, flags); 951 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 952 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 953 954 atomic_dec(&priv->buckets_out); 955 priv->total_received++; 956 957 return mpt_lan_receive_skb(dev, skb); 958 } 959 960 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 961 static int 962 mpt_lan_receive_post_free(struct net_device *dev, 963 LANReceivePostReply_t *pRecvRep) 964 { 965 struct mpt_lan_priv *priv = dev->priv; 966 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 967 unsigned long flags; 968 struct sk_buff *skb; 969 u32 ctx; 970 int count; 971 int i; 972 973 count = pRecvRep->NumberOfContexts; 974 975 /**/ dlprintk((KERN_INFO MYNAM "/receive_post_reply: " 976 "IOC returned %d buckets, freeing them...\n", count)); 977 978 spin_lock_irqsave(&priv->rxfidx_lock, flags); 979 for (i = 0; i < count; i++) { 980 ctx = le32_to_cpu(pRecvRep->BucketContext[i]); 981 982 skb = priv->RcvCtl[ctx].skb; 983 984 // dlprintk((KERN_INFO MYNAM ": %s: dev_name = %s\n", 985 // IOC_AND_NETDEV_NAMES_s_s(dev))); 986 // dlprintk((KERN_INFO MYNAM "@rpr[2], priv = %p, buckets_out addr = %p", 987 // priv, &(priv->buckets_out))); 988 // dlprintk((KERN_INFO MYNAM "@rpr[2] TC + 3\n")); 989 990 priv->RcvCtl[ctx].skb = NULL; 991 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 992 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 993 dev_kfree_skb_any(skb); 994 995 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 996 } 997 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 998 999 atomic_sub(count, &priv->buckets_out); 1000 1001 // for (i = 0; i < priv->max_buckets_out; i++) 1002 // if (priv->RcvCtl[i].skb != NULL) 1003 // dlprintk((KERN_INFO MYNAM "@rpr: bucket %03x " 1004 // "is still out\n", i)); 1005 1006 /* dlprintk((KERN_INFO MYNAM "/receive_post_reply: freed %d buckets\n", 1007 count)); 1008 */ 1009 /**/ dlprintk((KERN_INFO MYNAM "@receive_post_reply: %d buckets " 1010 /**/ "remaining, %d received back since sod.\n", 1011 /**/ atomic_read(&priv->buckets_out), priv->total_received)); 1012 return 0; 1013 } 1014 1015 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1016 static int 1017 mpt_lan_receive_post_reply(struct net_device *dev, 1018 LANReceivePostReply_t *pRecvRep) 1019 { 1020 struct mpt_lan_priv *priv = dev->priv; 1021 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 1022 struct sk_buff *skb, *old_skb; 1023 unsigned long flags; 1024 u32 len, ctx, offset; 1025 u32 remaining = le32_to_cpu(pRecvRep->BucketsRemaining); 1026 int count; 1027 int i, l; 1028 1029 dioprintk((KERN_INFO MYNAM ": mpt_lan_receive_post_reply called\n")); 1030 dioprintk((KERN_INFO MYNAM ": receive_post_reply: IOCStatus: %04x\n", 1031 le16_to_cpu(pRecvRep->IOCStatus))); 1032 1033 if ((le16_to_cpu(pRecvRep->IOCStatus) & MPI_IOCSTATUS_MASK) == 1034 MPI_IOCSTATUS_LAN_CANCELED) 1035 return mpt_lan_receive_post_free(dev, pRecvRep); 1036 1037 len = le32_to_cpu(pRecvRep->PacketLength); 1038 if (len == 0) { 1039 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Got a non-TURBO " 1040 "ReceivePostReply w/ PacketLength zero!\n", 1041 IOC_AND_NETDEV_NAMES_s_s(dev)); 1042 printk (KERN_ERR MYNAM ": MsgFlags = %02x, IOCStatus = %04x\n", 1043 pRecvRep->MsgFlags, le16_to_cpu(pRecvRep->IOCStatus)); 1044 return -1; 1045 } 1046 1047 ctx = le32_to_cpu(pRecvRep->BucketContext[0]); 1048 count = pRecvRep->NumberOfContexts; 1049 skb = priv->RcvCtl[ctx].skb; 1050 1051 offset = le32_to_cpu(pRecvRep->PacketOffset); 1052 // if (offset != 0) { 1053 // printk (KERN_INFO MYNAM ": %s/%s: Got a ReceivePostReply " 1054 // "w/ PacketOffset %u\n", 1055 // IOC_AND_NETDEV_NAMES_s_s(dev), 1056 // offset); 1057 // } 1058 1059 dioprintk((KERN_INFO MYNAM ": %s/%s: @rpr, offset = %d, len = %d\n", 1060 IOC_AND_NETDEV_NAMES_s_s(dev), 1061 offset, len)); 1062 1063 if (count > 1) { 1064 int szrem = len; 1065 1066 // dioprintk((KERN_INFO MYNAM ": %s/%s: Multiple buckets returned " 1067 // "for single packet, concatenating...\n", 1068 // IOC_AND_NETDEV_NAMES_s_s(dev))); 1069 1070 skb = (struct sk_buff *)dev_alloc_skb(len); 1071 if (!skb) { 1072 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 1073 IOC_AND_NETDEV_NAMES_s_s(dev), 1074 __FILE__, __LINE__); 1075 return -ENOMEM; 1076 } 1077 1078 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1079 for (i = 0; i < count; i++) { 1080 1081 ctx = le32_to_cpu(pRecvRep->BucketContext[i]); 1082 old_skb = priv->RcvCtl[ctx].skb; 1083 1084 l = priv->RcvCtl[ctx].len; 1085 if (szrem < l) 1086 l = szrem; 1087 1088 // dioprintk((KERN_INFO MYNAM ": %s/%s: Buckets = %d, len = %u\n", 1089 // IOC_AND_NETDEV_NAMES_s_s(dev), 1090 // i, l)); 1091 1092 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, 1093 priv->RcvCtl[ctx].dma, 1094 priv->RcvCtl[ctx].len, 1095 PCI_DMA_FROMDEVICE); 1096 memcpy(skb_put(skb, l), old_skb->data, l); 1097 1098 pci_dma_sync_single_for_device(mpt_dev->pcidev, 1099 priv->RcvCtl[ctx].dma, 1100 priv->RcvCtl[ctx].len, 1101 PCI_DMA_FROMDEVICE); 1102 1103 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1104 szrem -= l; 1105 } 1106 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1107 1108 } else if (len < MPT_LAN_RX_COPYBREAK) { 1109 1110 old_skb = skb; 1111 1112 skb = (struct sk_buff *)dev_alloc_skb(len); 1113 if (!skb) { 1114 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 1115 IOC_AND_NETDEV_NAMES_s_s(dev), 1116 __FILE__, __LINE__); 1117 return -ENOMEM; 1118 } 1119 1120 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, 1121 priv->RcvCtl[ctx].dma, 1122 priv->RcvCtl[ctx].len, 1123 PCI_DMA_FROMDEVICE); 1124 1125 memcpy(skb_put(skb, len), old_skb->data, len); 1126 1127 pci_dma_sync_single_for_device(mpt_dev->pcidev, 1128 priv->RcvCtl[ctx].dma, 1129 priv->RcvCtl[ctx].len, 1130 PCI_DMA_FROMDEVICE); 1131 1132 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1133 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1134 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1135 1136 } else { 1137 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1138 1139 priv->RcvCtl[ctx].skb = NULL; 1140 1141 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 1142 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 1143 priv->RcvCtl[ctx].dma = 0; 1144 1145 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1146 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1147 1148 skb_put(skb,len); 1149 } 1150 1151 atomic_sub(count, &priv->buckets_out); 1152 priv->total_received += count; 1153 1154 if (priv->mpt_rxfidx_tail >= MPT_LAN_MAX_BUCKETS_OUT) { 1155 printk (KERN_ERR MYNAM ": %s/%s: Yoohoo! mpt_rxfidx_tail = %d, " 1156 "MPT_LAN_MAX_BUCKETS_OUT = %d\n", 1157 IOC_AND_NETDEV_NAMES_s_s(dev), 1158 priv->mpt_rxfidx_tail, 1159 MPT_LAN_MAX_BUCKETS_OUT); 1160 1161 panic("Damn it Jim! I'm a doctor, not a programmer! " 1162 "Oh, wait a sec, I am a programmer. " 1163 "And, who's Jim?!?!\n" 1164 "Arrgghh! We've done it again!\n"); 1165 } 1166 1167 if (remaining == 0) 1168 printk (KERN_WARNING MYNAM ": %s/%s: WARNING - IOC out of buckets! " 1169 "(priv->buckets_out = %d)\n", 1170 IOC_AND_NETDEV_NAMES_s_s(dev), 1171 atomic_read(&priv->buckets_out)); 1172 else if (remaining < 10) 1173 printk (KERN_INFO MYNAM ": %s/%s: IOC says %d buckets left. " 1174 "(priv->buckets_out = %d)\n", 1175 IOC_AND_NETDEV_NAMES_s_s(dev), 1176 remaining, atomic_read(&priv->buckets_out)); 1177 1178 if ((remaining < priv->bucketthresh) && 1179 ((atomic_read(&priv->buckets_out) - remaining) > 1180 MPT_LAN_BUCKETS_REMAIN_MISMATCH_THRESH)) { 1181 1182 printk (KERN_WARNING MYNAM " Mismatch between driver's " 1183 "buckets_out count and fw's BucketsRemaining " 1184 "count has crossed the threshold, issuing a " 1185 "LanReset to clear the fw's hashtable. You may " 1186 "want to check your /var/log/messages for \"CRC " 1187 "error\" event notifications.\n"); 1188 1189 mpt_lan_reset(dev); 1190 mpt_lan_wake_post_buckets_task(dev, 0); 1191 } 1192 1193 return mpt_lan_receive_skb(dev, skb); 1194 } 1195 1196 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1197 /* Simple SGE's only at the moment */ 1198 1199 static void 1200 mpt_lan_post_receive_buckets(void *dev_id) 1201 { 1202 struct net_device *dev = dev_id; 1203 struct mpt_lan_priv *priv = dev->priv; 1204 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 1205 MPT_FRAME_HDR *mf; 1206 LANReceivePostRequest_t *pRecvReq; 1207 SGETransaction32_t *pTrans; 1208 SGESimple64_t *pSimple; 1209 struct sk_buff *skb; 1210 dma_addr_t dma; 1211 u32 curr, buckets, count, max; 1212 u32 len = (dev->mtu + dev->hard_header_len + 4); 1213 unsigned long flags; 1214 int i; 1215 1216 curr = atomic_read(&priv->buckets_out); 1217 buckets = (priv->max_buckets_out - curr); 1218 1219 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, Start_buckets = %u, buckets_out = %u\n", 1220 IOC_AND_NETDEV_NAMES_s_s(dev), 1221 __FUNCTION__, buckets, curr)); 1222 1223 max = (mpt_dev->req_sz - MPT_LAN_RECEIVE_POST_REQUEST_SIZE) / 1224 (MPT_LAN_TRANSACTION32_SIZE + sizeof(SGESimple64_t)); 1225 1226 while (buckets) { 1227 mf = mpt_get_msg_frame(LanCtx, mpt_dev); 1228 if (mf == NULL) { 1229 printk (KERN_ERR "%s: Unable to alloc request frame\n", 1230 __FUNCTION__); 1231 dioprintk((KERN_ERR "%s: %u buckets remaining\n", 1232 __FUNCTION__, buckets)); 1233 goto out; 1234 } 1235 pRecvReq = (LANReceivePostRequest_t *) mf; 1236 1237 count = buckets; 1238 if (count > max) 1239 count = max; 1240 1241 pRecvReq->Function = MPI_FUNCTION_LAN_RECEIVE; 1242 pRecvReq->ChainOffset = 0; 1243 pRecvReq->MsgFlags = 0; 1244 pRecvReq->PortNumber = priv->pnum; 1245 1246 pTrans = (SGETransaction32_t *) pRecvReq->SG_List; 1247 pSimple = NULL; 1248 1249 for (i = 0; i < count; i++) { 1250 int ctx; 1251 1252 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1253 if (priv->mpt_rxfidx_tail < 0) { 1254 printk (KERN_ERR "%s: Can't alloc context\n", 1255 __FUNCTION__); 1256 spin_unlock_irqrestore(&priv->rxfidx_lock, 1257 flags); 1258 break; 1259 } 1260 1261 ctx = priv->mpt_rxfidx[priv->mpt_rxfidx_tail--]; 1262 1263 skb = priv->RcvCtl[ctx].skb; 1264 if (skb && (priv->RcvCtl[ctx].len != len)) { 1265 pci_unmap_single(mpt_dev->pcidev, 1266 priv->RcvCtl[ctx].dma, 1267 priv->RcvCtl[ctx].len, 1268 PCI_DMA_FROMDEVICE); 1269 dev_kfree_skb(priv->RcvCtl[ctx].skb); 1270 skb = priv->RcvCtl[ctx].skb = NULL; 1271 } 1272 1273 if (skb == NULL) { 1274 skb = dev_alloc_skb(len); 1275 if (skb == NULL) { 1276 printk (KERN_WARNING 1277 MYNAM "/%s: Can't alloc skb\n", 1278 __FUNCTION__); 1279 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1280 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1281 break; 1282 } 1283 1284 dma = pci_map_single(mpt_dev->pcidev, skb->data, 1285 len, PCI_DMA_FROMDEVICE); 1286 1287 priv->RcvCtl[ctx].skb = skb; 1288 priv->RcvCtl[ctx].dma = dma; 1289 priv->RcvCtl[ctx].len = len; 1290 } 1291 1292 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1293 1294 pTrans->ContextSize = sizeof(u32); 1295 pTrans->DetailsLength = 0; 1296 pTrans->Flags = 0; 1297 pTrans->TransactionContext[0] = cpu_to_le32(ctx); 1298 1299 pSimple = (SGESimple64_t *) pTrans->TransactionDetails; 1300 1301 pSimple->FlagsLength = cpu_to_le32( 1302 ((MPI_SGE_FLAGS_END_OF_BUFFER | 1303 MPI_SGE_FLAGS_SIMPLE_ELEMENT | 1304 MPI_SGE_FLAGS_64_BIT_ADDRESSING) << MPI_SGE_FLAGS_SHIFT) | len); 1305 pSimple->Address.Low = cpu_to_le32((u32) priv->RcvCtl[ctx].dma); 1306 if (sizeof(dma_addr_t) > sizeof(u32)) 1307 pSimple->Address.High = cpu_to_le32((u32) ((u64) priv->RcvCtl[ctx].dma >> 32)); 1308 else 1309 pSimple->Address.High = 0; 1310 1311 pTrans = (SGETransaction32_t *) (pSimple + 1); 1312 } 1313 1314 if (pSimple == NULL) { 1315 /**/ printk (KERN_WARNING MYNAM "/%s: No buckets posted\n", 1316 /**/ __FUNCTION__); 1317 mpt_free_msg_frame(mpt_dev, mf); 1318 goto out; 1319 } 1320 1321 pSimple->FlagsLength |= cpu_to_le32(MPI_SGE_FLAGS_END_OF_LIST << MPI_SGE_FLAGS_SHIFT); 1322 1323 pRecvReq->BucketCount = cpu_to_le32(i); 1324 1325 /* printk(KERN_INFO MYNAM ": posting buckets\n "); 1326 * for (i = 0; i < j + 2; i ++) 1327 * printk (" %08x", le32_to_cpu(msg[i])); 1328 * printk ("\n"); 1329 */ 1330 1331 mpt_put_msg_frame(LanCtx, mpt_dev, mf); 1332 1333 priv->total_posted += i; 1334 buckets -= i; 1335 atomic_add(i, &priv->buckets_out); 1336 } 1337 1338 out: 1339 dioprintk((KERN_INFO MYNAM "/%s: End_buckets = %u, priv->buckets_out = %u\n", 1340 __FUNCTION__, buckets, atomic_read(&priv->buckets_out))); 1341 dioprintk((KERN_INFO MYNAM "/%s: Posted %u buckets and received %u back\n", 1342 __FUNCTION__, priv->total_posted, priv->total_received)); 1343 1344 clear_bit(0, &priv->post_buckets_active); 1345 } 1346 1347 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1348 static struct net_device * 1349 mpt_register_lan_device (MPT_ADAPTER *mpt_dev, int pnum) 1350 { 1351 struct net_device *dev = alloc_fcdev(sizeof(struct mpt_lan_priv)); 1352 struct mpt_lan_priv *priv = NULL; 1353 u8 HWaddr[FC_ALEN], *a; 1354 1355 if (!dev) 1356 return NULL; 1357 1358 dev->mtu = MPT_LAN_MTU; 1359 1360 priv = netdev_priv(dev); 1361 1362 priv->mpt_dev = mpt_dev; 1363 priv->pnum = pnum; 1364 1365 memset(&priv->post_buckets_task, 0, sizeof(struct work_struct)); 1366 INIT_WORK(&priv->post_buckets_task, mpt_lan_post_receive_buckets, dev); 1367 priv->post_buckets_active = 0; 1368 1369 dlprintk((KERN_INFO MYNAM "@%d: bucketlen = %d\n", 1370 __LINE__, dev->mtu + dev->hard_header_len + 4)); 1371 1372 atomic_set(&priv->buckets_out, 0); 1373 priv->total_posted = 0; 1374 priv->total_received = 0; 1375 priv->max_buckets_out = max_buckets_out; 1376 if (mpt_dev->pfacts[0].MaxLanBuckets < max_buckets_out) 1377 priv->max_buckets_out = mpt_dev->pfacts[0].MaxLanBuckets; 1378 1379 dlprintk((KERN_INFO MYNAM "@%d: MaxLanBuckets=%d, max_buckets_out/priv=%d/%d\n", 1380 __LINE__, 1381 mpt_dev->pfacts[0].MaxLanBuckets, 1382 max_buckets_out, 1383 priv->max_buckets_out)); 1384 1385 priv->bucketthresh = priv->max_buckets_out * 2 / 3; 1386 spin_lock_init(&priv->txfidx_lock); 1387 spin_lock_init(&priv->rxfidx_lock); 1388 1389 memset(&priv->stats, 0, sizeof(priv->stats)); 1390 1391 /* Grab pre-fetched LANPage1 stuff. :-) */ 1392 a = (u8 *) &mpt_dev->lan_cnfg_page1.HardwareAddressLow; 1393 1394 HWaddr[0] = a[5]; 1395 HWaddr[1] = a[4]; 1396 HWaddr[2] = a[3]; 1397 HWaddr[3] = a[2]; 1398 HWaddr[4] = a[1]; 1399 HWaddr[5] = a[0]; 1400 1401 dev->addr_len = FC_ALEN; 1402 memcpy(dev->dev_addr, HWaddr, FC_ALEN); 1403 memset(dev->broadcast, 0xff, FC_ALEN); 1404 1405 /* The Tx queue is 127 deep on the 909. 1406 * Give ourselves some breathing room. 1407 */ 1408 priv->tx_max_out = (tx_max_out_p <= MPT_TX_MAX_OUT_LIM) ? 1409 tx_max_out_p : MPT_TX_MAX_OUT_LIM; 1410 1411 dev->open = mpt_lan_open; 1412 dev->stop = mpt_lan_close; 1413 dev->get_stats = mpt_lan_get_stats; 1414 dev->set_multicast_list = NULL; 1415 dev->change_mtu = mpt_lan_change_mtu; 1416 dev->hard_start_xmit = mpt_lan_sdu_send; 1417 1418 /* Not in 2.3.42. Need 2.3.45+ */ 1419 dev->tx_timeout = mpt_lan_tx_timeout; 1420 dev->watchdog_timeo = MPT_LAN_TX_TIMEOUT; 1421 1422 dlprintk((KERN_INFO MYNAM ": Finished registering dev " 1423 "and setting initial values\n")); 1424 1425 SET_MODULE_OWNER(dev); 1426 1427 if (register_netdev(dev) != 0) { 1428 free_netdev(dev); 1429 dev = NULL; 1430 } 1431 return dev; 1432 } 1433 1434 static int 1435 mptlan_probe(struct pci_dev *pdev, const struct pci_device_id *id) 1436 { 1437 MPT_ADAPTER *ioc = pci_get_drvdata(pdev); 1438 struct net_device *dev; 1439 int i; 1440 1441 for (i = 0; i < ioc->facts.NumberOfPorts; i++) { 1442 printk(KERN_INFO MYNAM ": %s: PortNum=%x, " 1443 "ProtocolFlags=%02Xh (%c%c%c%c)\n", 1444 ioc->name, ioc->pfacts[i].PortNumber, 1445 ioc->pfacts[i].ProtocolFlags, 1446 MPT_PROTOCOL_FLAGS_c_c_c_c( 1447 ioc->pfacts[i].ProtocolFlags)); 1448 1449 if (!(ioc->pfacts[i].ProtocolFlags & 1450 MPI_PORTFACTS_PROTOCOL_LAN)) { 1451 printk(KERN_INFO MYNAM ": %s: Hmmm... LAN protocol " 1452 "seems to be disabled on this adapter port!\n", 1453 ioc->name); 1454 continue; 1455 } 1456 1457 dev = mpt_register_lan_device(ioc, i); 1458 if (!dev) { 1459 printk(KERN_ERR MYNAM ": %s: Unable to register " 1460 "port%d as a LAN device\n", ioc->name, 1461 ioc->pfacts[i].PortNumber); 1462 continue; 1463 } 1464 1465 printk(KERN_INFO MYNAM ": %s: Fusion MPT LAN device " 1466 "registered as '%s'\n", ioc->name, dev->name); 1467 printk(KERN_INFO MYNAM ": %s/%s: " 1468 "LanAddr = %02X:%02X:%02X:%02X:%02X:%02X\n", 1469 IOC_AND_NETDEV_NAMES_s_s(dev), 1470 dev->dev_addr[0], dev->dev_addr[1], 1471 dev->dev_addr[2], dev->dev_addr[3], 1472 dev->dev_addr[4], dev->dev_addr[5]); 1473 1474 ioc->netdev = dev; 1475 1476 return 0; 1477 } 1478 1479 return -ENODEV; 1480 } 1481 1482 static void 1483 mptlan_remove(struct pci_dev *pdev) 1484 { 1485 MPT_ADAPTER *ioc = pci_get_drvdata(pdev); 1486 struct net_device *dev = ioc->netdev; 1487 1488 if(dev != NULL) { 1489 unregister_netdev(dev); 1490 free_netdev(dev); 1491 } 1492 } 1493 1494 static struct mpt_pci_driver mptlan_driver = { 1495 .probe = mptlan_probe, 1496 .remove = mptlan_remove, 1497 }; 1498 1499 static int __init mpt_lan_init (void) 1500 { 1501 show_mptmod_ver(LANAME, LANVER); 1502 1503 if ((LanCtx = mpt_register(lan_reply, MPTLAN_DRIVER)) <= 0) { 1504 printk (KERN_ERR MYNAM ": Failed to register with MPT base driver\n"); 1505 return -EBUSY; 1506 } 1507 1508 /* Set the callback index to be used by driver core for turbo replies */ 1509 mpt_lan_index = LanCtx; 1510 1511 dlprintk((KERN_INFO MYNAM ": assigned context of %d\n", LanCtx)); 1512 1513 if (mpt_reset_register(LanCtx, mpt_lan_ioc_reset)) { 1514 printk(KERN_ERR MYNAM ": Eieee! unable to register a reset " 1515 "handler with mptbase! The world is at an end! " 1516 "Everything is fading to black! Goodbye.\n"); 1517 return -EBUSY; 1518 } 1519 1520 dlprintk((KERN_INFO MYNAM ": Registered for IOC reset notifications\n")); 1521 1522 if (mpt_device_driver_register(&mptlan_driver, MPTLAN_DRIVER)) 1523 dprintk((KERN_INFO MYNAM ": failed to register dd callbacks\n")); 1524 return 0; 1525 } 1526 1527 static void __exit mpt_lan_exit(void) 1528 { 1529 mpt_device_driver_deregister(MPTLAN_DRIVER); 1530 mpt_reset_deregister(LanCtx); 1531 1532 if (LanCtx >= 0) { 1533 mpt_deregister(LanCtx); 1534 LanCtx = -1; 1535 mpt_lan_index = 0; 1536 } 1537 } 1538 1539 module_init(mpt_lan_init); 1540 module_exit(mpt_lan_exit); 1541 1542 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1543 static unsigned short 1544 mpt_lan_type_trans(struct sk_buff *skb, struct net_device *dev) 1545 { 1546 struct mpt_lan_ohdr *fch = (struct mpt_lan_ohdr *)skb->data; 1547 struct fcllc *fcllc; 1548 1549 skb->mac.raw = skb->data; 1550 skb_pull(skb, sizeof(struct mpt_lan_ohdr)); 1551 1552 if (fch->dtype == htons(0xffff)) { 1553 u32 *p = (u32 *) fch; 1554 1555 swab32s(p + 0); 1556 swab32s(p + 1); 1557 swab32s(p + 2); 1558 swab32s(p + 3); 1559 1560 printk (KERN_WARNING MYNAM ": %s: WARNING - Broadcast swap F/W bug detected!\n", 1561 NETDEV_PTR_TO_IOC_NAME_s(dev)); 1562 printk (KERN_WARNING MYNAM ": Please update sender @ MAC_addr = %02x:%02x:%02x:%02x:%02x:%02x\n", 1563 fch->saddr[0], fch->saddr[1], fch->saddr[2], 1564 fch->saddr[3], fch->saddr[4], fch->saddr[5]); 1565 } 1566 1567 if (*fch->daddr & 1) { 1568 if (!memcmp(fch->daddr, dev->broadcast, FC_ALEN)) { 1569 skb->pkt_type = PACKET_BROADCAST; 1570 } else { 1571 skb->pkt_type = PACKET_MULTICAST; 1572 } 1573 } else { 1574 if (memcmp(fch->daddr, dev->dev_addr, FC_ALEN)) { 1575 skb->pkt_type = PACKET_OTHERHOST; 1576 } else { 1577 skb->pkt_type = PACKET_HOST; 1578 } 1579 } 1580 1581 fcllc = (struct fcllc *)skb->data; 1582 1583 #ifdef QLOGIC_NAA_WORKAROUND 1584 { 1585 u16 source_naa = fch->stype, found = 0; 1586 1587 /* Workaround for QLogic not following RFC 2625 in regards to the NAA 1588 value. */ 1589 1590 if ((source_naa & 0xF000) == 0) 1591 source_naa = swab16(source_naa); 1592 1593 if (fcllc->ethertype == htons(ETH_P_ARP)) 1594 dlprintk ((KERN_INFO "mptlan/type_trans: got arp req/rep w/ naa of " 1595 "%04x.\n", source_naa)); 1596 1597 if ((fcllc->ethertype == htons(ETH_P_ARP)) && 1598 ((source_naa >> 12) != MPT_LAN_NAA_RFC2625)){ 1599 struct NAA_Hosed *nh, *prevnh; 1600 int i; 1601 1602 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep from " 1603 "system with non-RFC 2625 NAA value (%04x).\n", 1604 source_naa)); 1605 1606 write_lock_irq(&bad_naa_lock); 1607 for (prevnh = nh = mpt_bad_naa; nh != NULL; 1608 prevnh=nh, nh=nh->next) { 1609 if ((nh->ieee[0] == fch->saddr[0]) && 1610 (nh->ieee[1] == fch->saddr[1]) && 1611 (nh->ieee[2] == fch->saddr[2]) && 1612 (nh->ieee[3] == fch->saddr[3]) && 1613 (nh->ieee[4] == fch->saddr[4]) && 1614 (nh->ieee[5] == fch->saddr[5])) { 1615 found = 1; 1616 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Re" 1617 "q/Rep w/ bad NAA from system already" 1618 " in DB.\n")); 1619 break; 1620 } 1621 } 1622 1623 if ((!found) && (nh == NULL)) { 1624 1625 nh = kmalloc(sizeof(struct NAA_Hosed), GFP_KERNEL); 1626 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep w/" 1627 " bad NAA from system not yet in DB.\n")); 1628 1629 if (nh != NULL) { 1630 nh->next = NULL; 1631 if (!mpt_bad_naa) 1632 mpt_bad_naa = nh; 1633 if (prevnh) 1634 prevnh->next = nh; 1635 1636 nh->NAA = source_naa; /* Set the S_NAA value. */ 1637 for (i = 0; i < FC_ALEN; i++) 1638 nh->ieee[i] = fch->saddr[i]; 1639 dlprintk ((KERN_INFO "Got ARP from %02x:%02x:%02x:%02x:" 1640 "%02x:%02x with non-compliant S_NAA value.\n", 1641 fch->saddr[0], fch->saddr[1], fch->saddr[2], 1642 fch->saddr[3], fch->saddr[4],fch->saddr[5])); 1643 } else { 1644 printk (KERN_ERR "mptlan/type_trans: Unable to" 1645 " kmalloc a NAA_Hosed struct.\n"); 1646 } 1647 } else if (!found) { 1648 printk (KERN_ERR "mptlan/type_trans: found not" 1649 " set, but nh isn't null. Evil " 1650 "funkiness abounds.\n"); 1651 } 1652 write_unlock_irq(&bad_naa_lock); 1653 } 1654 } 1655 #endif 1656 1657 /* Strip the SNAP header from ARP packets since we don't 1658 * pass them through to the 802.2/SNAP layers. 1659 */ 1660 if (fcllc->dsap == EXTENDED_SAP && 1661 (fcllc->ethertype == htons(ETH_P_IP) || 1662 fcllc->ethertype == htons(ETH_P_ARP))) { 1663 skb_pull(skb, sizeof(struct fcllc)); 1664 return fcllc->ethertype; 1665 } 1666 1667 return htons(ETH_P_802_2); 1668 } 1669 1670 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1671