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) 2000-2007 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 my_VERSION MPT_LINUX_VERSION_COMMON 60 #define MYNAM "mptlan" 61 62 MODULE_LICENSE("GPL"); 63 MODULE_VERSION(my_VERSION); 64 65 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 66 /* 67 * MPT LAN message sizes without variable part. 68 */ 69 #define MPT_LAN_RECEIVE_POST_REQUEST_SIZE \ 70 (sizeof(LANReceivePostRequest_t) - sizeof(SGE_MPI_UNION)) 71 72 #define MPT_LAN_TRANSACTION32_SIZE \ 73 (sizeof(SGETransaction32_t) - sizeof(u32)) 74 75 /* 76 * Fusion MPT LAN private structures 77 */ 78 79 struct NAA_Hosed { 80 u16 NAA; 81 u8 ieee[FC_ALEN]; 82 struct NAA_Hosed *next; 83 }; 84 85 struct BufferControl { 86 struct sk_buff *skb; 87 dma_addr_t dma; 88 unsigned int len; 89 }; 90 91 struct mpt_lan_priv { 92 MPT_ADAPTER *mpt_dev; 93 u8 pnum; /* Port number in the IOC. This is not a Unix network port! */ 94 95 atomic_t buckets_out; /* number of unused buckets on IOC */ 96 int bucketthresh; /* Send more when this many left */ 97 98 int *mpt_txfidx; /* Free Tx Context list */ 99 int mpt_txfidx_tail; 100 spinlock_t txfidx_lock; 101 102 int *mpt_rxfidx; /* Free Rx Context list */ 103 int mpt_rxfidx_tail; 104 spinlock_t rxfidx_lock; 105 106 struct BufferControl *RcvCtl; /* Receive BufferControl structs */ 107 struct BufferControl *SendCtl; /* Send BufferControl structs */ 108 109 int max_buckets_out; /* Max buckets to send to IOC */ 110 int tx_max_out; /* IOC's Tx queue len */ 111 112 u32 total_posted; 113 u32 total_received; 114 struct net_device_stats stats; /* Per device statistics */ 115 116 struct delayed_work post_buckets_task; 117 struct net_device *dev; 118 unsigned long post_buckets_active; 119 }; 120 121 struct mpt_lan_ohdr { 122 u16 dtype; 123 u8 daddr[FC_ALEN]; 124 u16 stype; 125 u8 saddr[FC_ALEN]; 126 }; 127 128 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 129 130 /* 131 * Forward protos... 132 */ 133 static int lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, 134 MPT_FRAME_HDR *reply); 135 static int mpt_lan_open(struct net_device *dev); 136 static int mpt_lan_reset(struct net_device *dev); 137 static int mpt_lan_close(struct net_device *dev); 138 static void mpt_lan_post_receive_buckets(struct mpt_lan_priv *priv); 139 static void mpt_lan_wake_post_buckets_task(struct net_device *dev, 140 int priority); 141 static int mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg); 142 static int mpt_lan_receive_post_reply(struct net_device *dev, 143 LANReceivePostReply_t *pRecvRep); 144 static int mpt_lan_send_turbo(struct net_device *dev, u32 tmsg); 145 static int mpt_lan_send_reply(struct net_device *dev, 146 LANSendReply_t *pSendRep); 147 static int mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase); 148 static int mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply); 149 static unsigned short mpt_lan_type_trans(struct sk_buff *skb, 150 struct net_device *dev); 151 152 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 153 /* 154 * Fusion MPT LAN private data 155 */ 156 static int LanCtx = -1; 157 158 static u32 max_buckets_out = 127; 159 static u32 tx_max_out_p = 127 - 16; 160 161 #ifdef QLOGIC_NAA_WORKAROUND 162 static struct NAA_Hosed *mpt_bad_naa = NULL; 163 DEFINE_RWLOCK(bad_naa_lock); 164 #endif 165 166 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 167 /* 168 * Fusion MPT LAN external data 169 */ 170 extern int mpt_lan_index; 171 172 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 173 /** 174 * lan_reply - Handle all data sent from the hardware. 175 * @ioc: Pointer to MPT_ADAPTER structure 176 * @mf: Pointer to original MPT request frame (NULL if TurboReply) 177 * @reply: Pointer to MPT reply frame 178 * 179 * Returns 1 indicating original alloc'd request frame ptr 180 * should be freed, or 0 if it shouldn't. 181 */ 182 static int 183 lan_reply (MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *reply) 184 { 185 struct net_device *dev = ioc->netdev; 186 int FreeReqFrame = 0; 187 188 dioprintk((KERN_INFO MYNAM ": %s/%s: Got reply.\n", 189 IOC_AND_NETDEV_NAMES_s_s(dev))); 190 191 // dioprintk((KERN_INFO MYNAM "@lan_reply: mf = %p, reply = %p\n", 192 // mf, reply)); 193 194 if (mf == NULL) { 195 u32 tmsg = CAST_PTR_TO_U32(reply); 196 197 dioprintk((KERN_INFO MYNAM ": %s/%s: @lan_reply, tmsg %08x\n", 198 IOC_AND_NETDEV_NAMES_s_s(dev), 199 tmsg)); 200 201 switch (GET_LAN_FORM(tmsg)) { 202 203 // NOTE! (Optimization) First case here is now caught in 204 // mptbase.c::mpt_interrupt() routine and callcack here 205 // is now skipped for this case! 206 #if 0 207 case LAN_REPLY_FORM_MESSAGE_CONTEXT: 208 // dioprintk((KERN_INFO MYNAM "/lan_reply: " 209 // "MessageContext turbo reply received\n")); 210 FreeReqFrame = 1; 211 break; 212 #endif 213 214 case LAN_REPLY_FORM_SEND_SINGLE: 215 // dioprintk((MYNAM "/lan_reply: " 216 // "calling mpt_lan_send_reply (turbo)\n")); 217 218 // Potential BUG here? 219 // FreeReqFrame = mpt_lan_send_turbo(dev, tmsg); 220 // If/when mpt_lan_send_turbo would return 1 here, 221 // calling routine (mptbase.c|mpt_interrupt) 222 // would Oops because mf has already been set 223 // to NULL. So after return from this func, 224 // mpt_interrupt() will attempt to put (NULL) mf ptr 225 // item back onto its adapter FreeQ - Oops!:-( 226 // It's Ok, since mpt_lan_send_turbo() *currently* 227 // always returns 0, but..., just in case: 228 229 (void) mpt_lan_send_turbo(dev, tmsg); 230 FreeReqFrame = 0; 231 232 break; 233 234 case LAN_REPLY_FORM_RECEIVE_SINGLE: 235 // dioprintk((KERN_INFO MYNAM "@lan_reply: " 236 // "rcv-Turbo = %08x\n", tmsg)); 237 mpt_lan_receive_post_turbo(dev, tmsg); 238 break; 239 240 default: 241 printk (KERN_ERR MYNAM "/lan_reply: Got a turbo reply " 242 "that I don't know what to do with\n"); 243 244 /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */ 245 246 break; 247 } 248 249 return FreeReqFrame; 250 } 251 252 // msg = (u32 *) reply; 253 // dioprintk((KERN_INFO MYNAM "@lan_reply: msg = %08x %08x %08x %08x\n", 254 // le32_to_cpu(msg[0]), le32_to_cpu(msg[1]), 255 // le32_to_cpu(msg[2]), le32_to_cpu(msg[3]))); 256 // dioprintk((KERN_INFO MYNAM "@lan_reply: Function = %02xh\n", 257 // reply->u.hdr.Function)); 258 259 switch (reply->u.hdr.Function) { 260 261 case MPI_FUNCTION_LAN_SEND: 262 { 263 LANSendReply_t *pSendRep; 264 265 pSendRep = (LANSendReply_t *) reply; 266 FreeReqFrame = mpt_lan_send_reply(dev, pSendRep); 267 break; 268 } 269 270 case MPI_FUNCTION_LAN_RECEIVE: 271 { 272 LANReceivePostReply_t *pRecvRep; 273 274 pRecvRep = (LANReceivePostReply_t *) reply; 275 if (pRecvRep->NumberOfContexts) { 276 mpt_lan_receive_post_reply(dev, pRecvRep); 277 if (!(pRecvRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY)) 278 FreeReqFrame = 1; 279 } else 280 dioprintk((KERN_INFO MYNAM "@lan_reply: zero context " 281 "ReceivePostReply received.\n")); 282 break; 283 } 284 285 case MPI_FUNCTION_LAN_RESET: 286 /* Just a default reply. Might want to check it to 287 * make sure that everything went ok. 288 */ 289 FreeReqFrame = 1; 290 break; 291 292 case MPI_FUNCTION_EVENT_NOTIFICATION: 293 case MPI_FUNCTION_EVENT_ACK: 294 /* _EVENT_NOTIFICATION should NOT come down this path any more. 295 * Should be routed to mpt_lan_event_process(), but just in case... 296 */ 297 FreeReqFrame = 1; 298 break; 299 300 default: 301 printk (KERN_ERR MYNAM "/lan_reply: Got a non-turbo " 302 "reply that I don't know what to do with\n"); 303 304 /* CHECKME! Hmmm... FreeReqFrame is 0 here; is that right? */ 305 FreeReqFrame = 1; 306 307 break; 308 } 309 310 return FreeReqFrame; 311 } 312 313 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 314 static int 315 mpt_lan_ioc_reset(MPT_ADAPTER *ioc, int reset_phase) 316 { 317 struct net_device *dev = ioc->netdev; 318 struct mpt_lan_priv *priv; 319 320 if (dev == NULL) 321 return(1); 322 else 323 priv = netdev_priv(dev); 324 325 dlprintk((KERN_INFO MYNAM ": IOC %s_reset routed to LAN driver!\n", 326 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : ( 327 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post"))); 328 329 if (priv->mpt_rxfidx == NULL) 330 return (1); 331 332 if (reset_phase == MPT_IOC_SETUP_RESET) { 333 ; 334 } else if (reset_phase == MPT_IOC_PRE_RESET) { 335 int i; 336 unsigned long flags; 337 338 netif_stop_queue(dev); 339 340 dlprintk ((KERN_INFO "mptlan/ioc_reset: called netif_stop_queue for %s.\n", dev->name)); 341 342 atomic_set(&priv->buckets_out, 0); 343 344 /* Reset Rx Free Tail index and re-populate the queue. */ 345 spin_lock_irqsave(&priv->rxfidx_lock, flags); 346 priv->mpt_rxfidx_tail = -1; 347 for (i = 0; i < priv->max_buckets_out; i++) 348 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i; 349 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 350 } else { 351 mpt_lan_post_receive_buckets(priv); 352 netif_wake_queue(dev); 353 } 354 355 return 1; 356 } 357 358 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 359 static int 360 mpt_lan_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply) 361 { 362 dlprintk((KERN_INFO MYNAM ": MPT event routed to LAN driver!\n")); 363 364 switch (le32_to_cpu(pEvReply->Event)) { 365 case MPI_EVENT_NONE: /* 00 */ 366 case MPI_EVENT_LOG_DATA: /* 01 */ 367 case MPI_EVENT_STATE_CHANGE: /* 02 */ 368 case MPI_EVENT_UNIT_ATTENTION: /* 03 */ 369 case MPI_EVENT_IOC_BUS_RESET: /* 04 */ 370 case MPI_EVENT_EXT_BUS_RESET: /* 05 */ 371 case MPI_EVENT_RESCAN: /* 06 */ 372 /* Ok, do we need to do anything here? As far as 373 I can tell, this is when a new device gets added 374 to the loop. */ 375 case MPI_EVENT_LINK_STATUS_CHANGE: /* 07 */ 376 case MPI_EVENT_LOOP_STATE_CHANGE: /* 08 */ 377 case MPI_EVENT_LOGOUT: /* 09 */ 378 case MPI_EVENT_EVENT_CHANGE: /* 0A */ 379 default: 380 break; 381 } 382 383 /* 384 * NOTE: pEvent->AckRequired handling now done in mptbase.c; 385 * Do NOT do it here now! 386 */ 387 388 return 1; 389 } 390 391 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 392 static int 393 mpt_lan_open(struct net_device *dev) 394 { 395 struct mpt_lan_priv *priv = netdev_priv(dev); 396 int i; 397 398 if (mpt_lan_reset(dev) != 0) { 399 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 400 401 printk (KERN_WARNING MYNAM "/lan_open: lan_reset failed."); 402 403 if (mpt_dev->active) 404 printk ("The ioc is active. Perhaps it needs to be" 405 " reset?\n"); 406 else 407 printk ("The ioc in inactive, most likely in the " 408 "process of being reset. Please try again in " 409 "a moment.\n"); 410 } 411 412 priv->mpt_txfidx = kmalloc(priv->tx_max_out * sizeof(int), GFP_KERNEL); 413 if (priv->mpt_txfidx == NULL) 414 goto out; 415 priv->mpt_txfidx_tail = -1; 416 417 priv->SendCtl = kcalloc(priv->tx_max_out, sizeof(struct BufferControl), 418 GFP_KERNEL); 419 if (priv->SendCtl == NULL) 420 goto out_mpt_txfidx; 421 for (i = 0; i < priv->tx_max_out; i++) 422 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = i; 423 424 dlprintk((KERN_INFO MYNAM "@lo: Finished initializing SendCtl\n")); 425 426 priv->mpt_rxfidx = kmalloc(priv->max_buckets_out * sizeof(int), 427 GFP_KERNEL); 428 if (priv->mpt_rxfidx == NULL) 429 goto out_SendCtl; 430 priv->mpt_rxfidx_tail = -1; 431 432 priv->RcvCtl = kcalloc(priv->max_buckets_out, 433 sizeof(struct BufferControl), 434 GFP_KERNEL); 435 if (priv->RcvCtl == NULL) 436 goto out_mpt_rxfidx; 437 for (i = 0; i < priv->max_buckets_out; i++) 438 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = i; 439 440 /**/ dlprintk((KERN_INFO MYNAM "/lo: txfidx contains - ")); 441 /**/ for (i = 0; i < priv->tx_max_out; i++) 442 /**/ dlprintk((" %xh", priv->mpt_txfidx[i])); 443 /**/ dlprintk(("\n")); 444 445 dlprintk((KERN_INFO MYNAM "/lo: Finished initializing RcvCtl\n")); 446 447 mpt_lan_post_receive_buckets(priv); 448 printk(KERN_INFO MYNAM ": %s/%s: interface up & active\n", 449 IOC_AND_NETDEV_NAMES_s_s(dev)); 450 451 if (mpt_event_register(LanCtx, mpt_lan_event_process) != 0) { 452 printk (KERN_WARNING MYNAM "/lo: Unable to register for Event" 453 " Notifications. This is a bad thing! We're not going " 454 "to go ahead, but I'd be leery of system stability at " 455 "this point.\n"); 456 } 457 458 netif_start_queue(dev); 459 dlprintk((KERN_INFO MYNAM "/lo: Done.\n")); 460 461 return 0; 462 out_mpt_rxfidx: 463 kfree(priv->mpt_rxfidx); 464 priv->mpt_rxfidx = NULL; 465 out_SendCtl: 466 kfree(priv->SendCtl); 467 priv->SendCtl = NULL; 468 out_mpt_txfidx: 469 kfree(priv->mpt_txfidx); 470 priv->mpt_txfidx = NULL; 471 out: return -ENOMEM; 472 } 473 474 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 475 /* Send a LanReset message to the FW. This should result in the FW returning 476 any buckets it still has. */ 477 static int 478 mpt_lan_reset(struct net_device *dev) 479 { 480 MPT_FRAME_HDR *mf; 481 LANResetRequest_t *pResetReq; 482 struct mpt_lan_priv *priv = netdev_priv(dev); 483 484 mf = mpt_get_msg_frame(LanCtx, priv->mpt_dev); 485 486 if (mf == NULL) { 487 /* dlprintk((KERN_ERR MYNAM "/reset: Evil funkiness abounds! " 488 "Unable to allocate a request frame.\n")); 489 */ 490 return -1; 491 } 492 493 pResetReq = (LANResetRequest_t *) mf; 494 495 pResetReq->Function = MPI_FUNCTION_LAN_RESET; 496 pResetReq->ChainOffset = 0; 497 pResetReq->Reserved = 0; 498 pResetReq->PortNumber = priv->pnum; 499 pResetReq->MsgFlags = 0; 500 pResetReq->Reserved2 = 0; 501 502 mpt_put_msg_frame(LanCtx, priv->mpt_dev, mf); 503 504 return 0; 505 } 506 507 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 508 static int 509 mpt_lan_close(struct net_device *dev) 510 { 511 struct mpt_lan_priv *priv = netdev_priv(dev); 512 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 513 unsigned long timeout; 514 int i; 515 516 dlprintk((KERN_INFO MYNAM ": mpt_lan_close called\n")); 517 518 mpt_event_deregister(LanCtx); 519 520 dlprintk((KERN_INFO MYNAM ":lan_close: Posted %d buckets " 521 "since driver was loaded, %d still out\n", 522 priv->total_posted,atomic_read(&priv->buckets_out))); 523 524 netif_stop_queue(dev); 525 526 mpt_lan_reset(dev); 527 528 timeout = jiffies + 2 * HZ; 529 while (atomic_read(&priv->buckets_out) && time_before(jiffies, timeout)) 530 schedule_timeout_interruptible(1); 531 532 for (i = 0; i < priv->max_buckets_out; i++) { 533 if (priv->RcvCtl[i].skb != NULL) { 534 /**/ dlprintk((KERN_INFO MYNAM "/lan_close: bucket %05x " 535 /**/ "is still out\n", i)); 536 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[i].dma, 537 priv->RcvCtl[i].len, 538 PCI_DMA_FROMDEVICE); 539 dev_kfree_skb(priv->RcvCtl[i].skb); 540 } 541 } 542 543 kfree(priv->RcvCtl); 544 kfree(priv->mpt_rxfidx); 545 546 for (i = 0; i < priv->tx_max_out; i++) { 547 if (priv->SendCtl[i].skb != NULL) { 548 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[i].dma, 549 priv->SendCtl[i].len, 550 PCI_DMA_TODEVICE); 551 dev_kfree_skb(priv->SendCtl[i].skb); 552 } 553 } 554 555 kfree(priv->SendCtl); 556 kfree(priv->mpt_txfidx); 557 558 atomic_set(&priv->buckets_out, 0); 559 560 printk(KERN_INFO MYNAM ": %s/%s: interface down & inactive\n", 561 IOC_AND_NETDEV_NAMES_s_s(dev)); 562 563 return 0; 564 } 565 566 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 567 static struct net_device_stats * 568 mpt_lan_get_stats(struct net_device *dev) 569 { 570 struct mpt_lan_priv *priv = netdev_priv(dev); 571 572 return (struct net_device_stats *) &priv->stats; 573 } 574 575 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 576 static int 577 mpt_lan_change_mtu(struct net_device *dev, int new_mtu) 578 { 579 if ((new_mtu < MPT_LAN_MIN_MTU) || (new_mtu > MPT_LAN_MAX_MTU)) 580 return -EINVAL; 581 dev->mtu = new_mtu; 582 return 0; 583 } 584 585 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 586 /* Tx timeout handler. */ 587 static void 588 mpt_lan_tx_timeout(struct net_device *dev) 589 { 590 struct mpt_lan_priv *priv = netdev_priv(dev); 591 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 592 593 if (mpt_dev->active) { 594 dlprintk (("mptlan/tx_timeout: calling netif_wake_queue for %s.\n", dev->name)); 595 netif_wake_queue(dev); 596 } 597 } 598 599 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 600 //static inline int 601 static int 602 mpt_lan_send_turbo(struct net_device *dev, u32 tmsg) 603 { 604 struct mpt_lan_priv *priv = netdev_priv(dev); 605 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 606 struct sk_buff *sent; 607 unsigned long flags; 608 u32 ctx; 609 610 ctx = GET_LAN_BUFFER_CONTEXT(tmsg); 611 sent = priv->SendCtl[ctx].skb; 612 613 priv->stats.tx_packets++; 614 priv->stats.tx_bytes += sent->len; 615 616 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.\n", 617 IOC_AND_NETDEV_NAMES_s_s(dev), 618 __FUNCTION__, sent)); 619 620 priv->SendCtl[ctx].skb = NULL; 621 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma, 622 priv->SendCtl[ctx].len, PCI_DMA_TODEVICE); 623 dev_kfree_skb_irq(sent); 624 625 spin_lock_irqsave(&priv->txfidx_lock, flags); 626 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx; 627 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 628 629 netif_wake_queue(dev); 630 return 0; 631 } 632 633 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 634 static int 635 mpt_lan_send_reply(struct net_device *dev, LANSendReply_t *pSendRep) 636 { 637 struct mpt_lan_priv *priv = netdev_priv(dev); 638 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 639 struct sk_buff *sent; 640 unsigned long flags; 641 int FreeReqFrame = 0; 642 u32 *pContext; 643 u32 ctx; 644 u8 count; 645 646 count = pSendRep->NumberOfContexts; 647 648 dioprintk((KERN_INFO MYNAM ": send_reply: IOCStatus: %04x\n", 649 le16_to_cpu(pSendRep->IOCStatus))); 650 651 /* Add check for Loginfo Flag in IOCStatus */ 652 653 switch (le16_to_cpu(pSendRep->IOCStatus) & MPI_IOCSTATUS_MASK) { 654 case MPI_IOCSTATUS_SUCCESS: 655 priv->stats.tx_packets += count; 656 break; 657 658 case MPI_IOCSTATUS_LAN_CANCELED: 659 case MPI_IOCSTATUS_LAN_TRANSMIT_ABORTED: 660 break; 661 662 case MPI_IOCSTATUS_INVALID_SGL: 663 priv->stats.tx_errors += count; 664 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Invalid SGL sent to IOC!\n", 665 IOC_AND_NETDEV_NAMES_s_s(dev)); 666 goto out; 667 668 default: 669 priv->stats.tx_errors += count; 670 break; 671 } 672 673 pContext = &pSendRep->BufferContext; 674 675 spin_lock_irqsave(&priv->txfidx_lock, flags); 676 while (count > 0) { 677 ctx = GET_LAN_BUFFER_CONTEXT(le32_to_cpu(*pContext)); 678 679 sent = priv->SendCtl[ctx].skb; 680 priv->stats.tx_bytes += sent->len; 681 682 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, skb %p sent.\n", 683 IOC_AND_NETDEV_NAMES_s_s(dev), 684 __FUNCTION__, sent)); 685 686 priv->SendCtl[ctx].skb = NULL; 687 pci_unmap_single(mpt_dev->pcidev, priv->SendCtl[ctx].dma, 688 priv->SendCtl[ctx].len, PCI_DMA_TODEVICE); 689 dev_kfree_skb_irq(sent); 690 691 priv->mpt_txfidx[++priv->mpt_txfidx_tail] = ctx; 692 693 pContext++; 694 count--; 695 } 696 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 697 698 out: 699 if (!(pSendRep->MsgFlags & MPI_MSGFLAGS_CONTINUATION_REPLY)) 700 FreeReqFrame = 1; 701 702 netif_wake_queue(dev); 703 return FreeReqFrame; 704 } 705 706 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 707 static int 708 mpt_lan_sdu_send (struct sk_buff *skb, struct net_device *dev) 709 { 710 struct mpt_lan_priv *priv = netdev_priv(dev); 711 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 712 MPT_FRAME_HDR *mf; 713 LANSendRequest_t *pSendReq; 714 SGETransaction32_t *pTrans; 715 SGESimple64_t *pSimple; 716 dma_addr_t dma; 717 unsigned long flags; 718 int ctx; 719 u16 cur_naa = 0x1000; 720 721 dioprintk((KERN_INFO MYNAM ": %s called, skb_addr = %p\n", 722 __FUNCTION__, skb)); 723 724 spin_lock_irqsave(&priv->txfidx_lock, flags); 725 if (priv->mpt_txfidx_tail < 0) { 726 netif_stop_queue(dev); 727 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 728 729 printk (KERN_ERR "%s: no tx context available: %u\n", 730 __FUNCTION__, priv->mpt_txfidx_tail); 731 return 1; 732 } 733 734 mf = mpt_get_msg_frame(LanCtx, mpt_dev); 735 if (mf == NULL) { 736 netif_stop_queue(dev); 737 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 738 739 printk (KERN_ERR "%s: Unable to alloc request frame\n", 740 __FUNCTION__); 741 return 1; 742 } 743 744 ctx = priv->mpt_txfidx[priv->mpt_txfidx_tail--]; 745 spin_unlock_irqrestore(&priv->txfidx_lock, flags); 746 747 // dioprintk((KERN_INFO MYNAM ": %s/%s: Creating new msg frame (send).\n", 748 // IOC_AND_NETDEV_NAMES_s_s(dev))); 749 750 pSendReq = (LANSendRequest_t *) mf; 751 752 /* Set the mac.raw pointer, since this apparently isn't getting 753 * done before we get the skb. Pull the data pointer past the mac data. 754 */ 755 skb->mac.raw = skb->data; 756 skb_pull(skb, 12); 757 758 dma = pci_map_single(mpt_dev->pcidev, skb->data, skb->len, 759 PCI_DMA_TODEVICE); 760 761 priv->SendCtl[ctx].skb = skb; 762 priv->SendCtl[ctx].dma = dma; 763 priv->SendCtl[ctx].len = skb->len; 764 765 /* Message Header */ 766 pSendReq->Reserved = 0; 767 pSendReq->Function = MPI_FUNCTION_LAN_SEND; 768 pSendReq->ChainOffset = 0; 769 pSendReq->Reserved2 = 0; 770 pSendReq->MsgFlags = 0; 771 pSendReq->PortNumber = priv->pnum; 772 773 /* Transaction Context Element */ 774 pTrans = (SGETransaction32_t *) pSendReq->SG_List; 775 776 /* No Flags, 8 bytes of Details, 32bit Context (bloody turbo replies) */ 777 pTrans->ContextSize = sizeof(u32); 778 pTrans->DetailsLength = 2 * sizeof(u32); 779 pTrans->Flags = 0; 780 pTrans->TransactionContext[0] = cpu_to_le32(ctx); 781 782 // dioprintk((KERN_INFO MYNAM ": %s/%s: BC = %08x, skb = %p, buff = %p\n", 783 // IOC_AND_NETDEV_NAMES_s_s(dev), 784 // ctx, skb, skb->data)); 785 786 #ifdef QLOGIC_NAA_WORKAROUND 787 { 788 struct NAA_Hosed *nh; 789 790 /* Munge the NAA for Tx packets to QLogic boards, which don't follow 791 RFC 2625. The longer I look at this, the more my opinion of Qlogic 792 drops. */ 793 read_lock_irq(&bad_naa_lock); 794 for (nh = mpt_bad_naa; nh != NULL; nh=nh->next) { 795 if ((nh->ieee[0] == skb->mac.raw[0]) && 796 (nh->ieee[1] == skb->mac.raw[1]) && 797 (nh->ieee[2] == skb->mac.raw[2]) && 798 (nh->ieee[3] == skb->mac.raw[3]) && 799 (nh->ieee[4] == skb->mac.raw[4]) && 800 (nh->ieee[5] == skb->mac.raw[5])) { 801 cur_naa = nh->NAA; 802 dlprintk ((KERN_INFO "mptlan/sdu_send: using NAA value " 803 "= %04x.\n", cur_naa)); 804 break; 805 } 806 } 807 read_unlock_irq(&bad_naa_lock); 808 } 809 #endif 810 811 pTrans->TransactionDetails[0] = cpu_to_le32((cur_naa << 16) | 812 (skb->mac.raw[0] << 8) | 813 (skb->mac.raw[1] << 0)); 814 pTrans->TransactionDetails[1] = cpu_to_le32((skb->mac.raw[2] << 24) | 815 (skb->mac.raw[3] << 16) | 816 (skb->mac.raw[4] << 8) | 817 (skb->mac.raw[5] << 0)); 818 819 pSimple = (SGESimple64_t *) &pTrans->TransactionDetails[2]; 820 821 /* If we ever decide to send more than one Simple SGE per LANSend, then 822 we will need to make sure that LAST_ELEMENT only gets set on the 823 last one. Otherwise, bad voodoo and evil funkiness will commence. */ 824 pSimple->FlagsLength = cpu_to_le32( 825 ((MPI_SGE_FLAGS_LAST_ELEMENT | 826 MPI_SGE_FLAGS_END_OF_BUFFER | 827 MPI_SGE_FLAGS_SIMPLE_ELEMENT | 828 MPI_SGE_FLAGS_SYSTEM_ADDRESS | 829 MPI_SGE_FLAGS_HOST_TO_IOC | 830 MPI_SGE_FLAGS_64_BIT_ADDRESSING | 831 MPI_SGE_FLAGS_END_OF_LIST) << MPI_SGE_FLAGS_SHIFT) | 832 skb->len); 833 pSimple->Address.Low = cpu_to_le32((u32) dma); 834 if (sizeof(dma_addr_t) > sizeof(u32)) 835 pSimple->Address.High = cpu_to_le32((u32) ((u64) dma >> 32)); 836 else 837 pSimple->Address.High = 0; 838 839 mpt_put_msg_frame (LanCtx, mpt_dev, mf); 840 dev->trans_start = jiffies; 841 842 dioprintk((KERN_INFO MYNAM ": %s/%s: Sending packet. FlagsLength = %08x.\n", 843 IOC_AND_NETDEV_NAMES_s_s(dev), 844 le32_to_cpu(pSimple->FlagsLength))); 845 846 return 0; 847 } 848 849 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 850 static void 851 mpt_lan_wake_post_buckets_task(struct net_device *dev, int priority) 852 /* 853 * @priority: 0 = put it on the timer queue, 1 = put it on the immediate queue 854 */ 855 { 856 struct mpt_lan_priv *priv = dev->priv; 857 858 if (test_and_set_bit(0, &priv->post_buckets_active) == 0) { 859 if (priority) { 860 schedule_delayed_work(&priv->post_buckets_task, 0); 861 } else { 862 schedule_delayed_work(&priv->post_buckets_task, 1); 863 dioprintk((KERN_INFO MYNAM ": post_buckets queued on " 864 "timer.\n")); 865 } 866 dioprintk((KERN_INFO MYNAM ": %s/%s: Queued post_buckets task.\n", 867 IOC_AND_NETDEV_NAMES_s_s(dev) )); 868 } 869 } 870 871 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 872 static int 873 mpt_lan_receive_skb(struct net_device *dev, struct sk_buff *skb) 874 { 875 struct mpt_lan_priv *priv = dev->priv; 876 877 skb->protocol = mpt_lan_type_trans(skb, dev); 878 879 dioprintk((KERN_INFO MYNAM ": %s/%s: Incoming packet (%d bytes) " 880 "delivered to upper level.\n", 881 IOC_AND_NETDEV_NAMES_s_s(dev), skb->len)); 882 883 priv->stats.rx_bytes += skb->len; 884 priv->stats.rx_packets++; 885 886 skb->dev = dev; 887 netif_rx(skb); 888 889 dioprintk((MYNAM "/receive_skb: %d buckets remaining\n", 890 atomic_read(&priv->buckets_out))); 891 892 if (atomic_read(&priv->buckets_out) < priv->bucketthresh) 893 mpt_lan_wake_post_buckets_task(dev, 1); 894 895 dioprintk((KERN_INFO MYNAM "/receive_post_reply: %d buckets " 896 "remaining, %d received back since sod\n", 897 atomic_read(&priv->buckets_out), priv->total_received)); 898 899 return 0; 900 } 901 902 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 903 //static inline int 904 static int 905 mpt_lan_receive_post_turbo(struct net_device *dev, u32 tmsg) 906 { 907 struct mpt_lan_priv *priv = dev->priv; 908 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 909 struct sk_buff *skb, *old_skb; 910 unsigned long flags; 911 u32 ctx, len; 912 913 ctx = GET_LAN_BUCKET_CONTEXT(tmsg); 914 skb = priv->RcvCtl[ctx].skb; 915 916 len = GET_LAN_PACKET_LENGTH(tmsg); 917 918 if (len < MPT_LAN_RX_COPYBREAK) { 919 old_skb = skb; 920 921 skb = (struct sk_buff *)dev_alloc_skb(len); 922 if (!skb) { 923 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 924 IOC_AND_NETDEV_NAMES_s_s(dev), 925 __FILE__, __LINE__); 926 return -ENOMEM; 927 } 928 929 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 930 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 931 932 memcpy(skb_put(skb, len), old_skb->data, len); 933 934 pci_dma_sync_single_for_device(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 935 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 936 goto out; 937 } 938 939 skb_put(skb, len); 940 941 priv->RcvCtl[ctx].skb = NULL; 942 943 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 944 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 945 946 out: 947 spin_lock_irqsave(&priv->rxfidx_lock, flags); 948 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 949 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 950 951 atomic_dec(&priv->buckets_out); 952 priv->total_received++; 953 954 return mpt_lan_receive_skb(dev, skb); 955 } 956 957 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 958 static int 959 mpt_lan_receive_post_free(struct net_device *dev, 960 LANReceivePostReply_t *pRecvRep) 961 { 962 struct mpt_lan_priv *priv = dev->priv; 963 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 964 unsigned long flags; 965 struct sk_buff *skb; 966 u32 ctx; 967 int count; 968 int i; 969 970 count = pRecvRep->NumberOfContexts; 971 972 /**/ dlprintk((KERN_INFO MYNAM "/receive_post_reply: " 973 "IOC returned %d buckets, freeing them...\n", count)); 974 975 spin_lock_irqsave(&priv->rxfidx_lock, flags); 976 for (i = 0; i < count; i++) { 977 ctx = le32_to_cpu(pRecvRep->BucketContext[i]); 978 979 skb = priv->RcvCtl[ctx].skb; 980 981 // dlprintk((KERN_INFO MYNAM ": %s: dev_name = %s\n", 982 // IOC_AND_NETDEV_NAMES_s_s(dev))); 983 // dlprintk((KERN_INFO MYNAM "@rpr[2], priv = %p, buckets_out addr = %p", 984 // priv, &(priv->buckets_out))); 985 // dlprintk((KERN_INFO MYNAM "@rpr[2] TC + 3\n")); 986 987 priv->RcvCtl[ctx].skb = NULL; 988 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 989 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 990 dev_kfree_skb_any(skb); 991 992 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 993 } 994 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 995 996 atomic_sub(count, &priv->buckets_out); 997 998 // for (i = 0; i < priv->max_buckets_out; i++) 999 // if (priv->RcvCtl[i].skb != NULL) 1000 // dlprintk((KERN_INFO MYNAM "@rpr: bucket %03x " 1001 // "is still out\n", i)); 1002 1003 /* dlprintk((KERN_INFO MYNAM "/receive_post_reply: freed %d buckets\n", 1004 count)); 1005 */ 1006 /**/ dlprintk((KERN_INFO MYNAM "@receive_post_reply: %d buckets " 1007 /**/ "remaining, %d received back since sod.\n", 1008 /**/ atomic_read(&priv->buckets_out), priv->total_received)); 1009 return 0; 1010 } 1011 1012 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1013 static int 1014 mpt_lan_receive_post_reply(struct net_device *dev, 1015 LANReceivePostReply_t *pRecvRep) 1016 { 1017 struct mpt_lan_priv *priv = dev->priv; 1018 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 1019 struct sk_buff *skb, *old_skb; 1020 unsigned long flags; 1021 u32 len, ctx, offset; 1022 u32 remaining = le32_to_cpu(pRecvRep->BucketsRemaining); 1023 int count; 1024 int i, l; 1025 1026 dioprintk((KERN_INFO MYNAM ": mpt_lan_receive_post_reply called\n")); 1027 dioprintk((KERN_INFO MYNAM ": receive_post_reply: IOCStatus: %04x\n", 1028 le16_to_cpu(pRecvRep->IOCStatus))); 1029 1030 if ((le16_to_cpu(pRecvRep->IOCStatus) & MPI_IOCSTATUS_MASK) == 1031 MPI_IOCSTATUS_LAN_CANCELED) 1032 return mpt_lan_receive_post_free(dev, pRecvRep); 1033 1034 len = le32_to_cpu(pRecvRep->PacketLength); 1035 if (len == 0) { 1036 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Got a non-TURBO " 1037 "ReceivePostReply w/ PacketLength zero!\n", 1038 IOC_AND_NETDEV_NAMES_s_s(dev)); 1039 printk (KERN_ERR MYNAM ": MsgFlags = %02x, IOCStatus = %04x\n", 1040 pRecvRep->MsgFlags, le16_to_cpu(pRecvRep->IOCStatus)); 1041 return -1; 1042 } 1043 1044 ctx = le32_to_cpu(pRecvRep->BucketContext[0]); 1045 count = pRecvRep->NumberOfContexts; 1046 skb = priv->RcvCtl[ctx].skb; 1047 1048 offset = le32_to_cpu(pRecvRep->PacketOffset); 1049 // if (offset != 0) { 1050 // printk (KERN_INFO MYNAM ": %s/%s: Got a ReceivePostReply " 1051 // "w/ PacketOffset %u\n", 1052 // IOC_AND_NETDEV_NAMES_s_s(dev), 1053 // offset); 1054 // } 1055 1056 dioprintk((KERN_INFO MYNAM ": %s/%s: @rpr, offset = %d, len = %d\n", 1057 IOC_AND_NETDEV_NAMES_s_s(dev), 1058 offset, len)); 1059 1060 if (count > 1) { 1061 int szrem = len; 1062 1063 // dioprintk((KERN_INFO MYNAM ": %s/%s: Multiple buckets returned " 1064 // "for single packet, concatenating...\n", 1065 // IOC_AND_NETDEV_NAMES_s_s(dev))); 1066 1067 skb = (struct sk_buff *)dev_alloc_skb(len); 1068 if (!skb) { 1069 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 1070 IOC_AND_NETDEV_NAMES_s_s(dev), 1071 __FILE__, __LINE__); 1072 return -ENOMEM; 1073 } 1074 1075 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1076 for (i = 0; i < count; i++) { 1077 1078 ctx = le32_to_cpu(pRecvRep->BucketContext[i]); 1079 old_skb = priv->RcvCtl[ctx].skb; 1080 1081 l = priv->RcvCtl[ctx].len; 1082 if (szrem < l) 1083 l = szrem; 1084 1085 // dioprintk((KERN_INFO MYNAM ": %s/%s: Buckets = %d, len = %u\n", 1086 // IOC_AND_NETDEV_NAMES_s_s(dev), 1087 // i, l)); 1088 1089 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, 1090 priv->RcvCtl[ctx].dma, 1091 priv->RcvCtl[ctx].len, 1092 PCI_DMA_FROMDEVICE); 1093 memcpy(skb_put(skb, l), old_skb->data, l); 1094 1095 pci_dma_sync_single_for_device(mpt_dev->pcidev, 1096 priv->RcvCtl[ctx].dma, 1097 priv->RcvCtl[ctx].len, 1098 PCI_DMA_FROMDEVICE); 1099 1100 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1101 szrem -= l; 1102 } 1103 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1104 1105 } else if (len < MPT_LAN_RX_COPYBREAK) { 1106 1107 old_skb = skb; 1108 1109 skb = (struct sk_buff *)dev_alloc_skb(len); 1110 if (!skb) { 1111 printk (KERN_ERR MYNAM ": %s/%s: ERROR - Can't allocate skb! (%s@%d)\n", 1112 IOC_AND_NETDEV_NAMES_s_s(dev), 1113 __FILE__, __LINE__); 1114 return -ENOMEM; 1115 } 1116 1117 pci_dma_sync_single_for_cpu(mpt_dev->pcidev, 1118 priv->RcvCtl[ctx].dma, 1119 priv->RcvCtl[ctx].len, 1120 PCI_DMA_FROMDEVICE); 1121 1122 memcpy(skb_put(skb, len), old_skb->data, len); 1123 1124 pci_dma_sync_single_for_device(mpt_dev->pcidev, 1125 priv->RcvCtl[ctx].dma, 1126 priv->RcvCtl[ctx].len, 1127 PCI_DMA_FROMDEVICE); 1128 1129 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1130 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1131 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1132 1133 } else { 1134 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1135 1136 priv->RcvCtl[ctx].skb = NULL; 1137 1138 pci_unmap_single(mpt_dev->pcidev, priv->RcvCtl[ctx].dma, 1139 priv->RcvCtl[ctx].len, PCI_DMA_FROMDEVICE); 1140 priv->RcvCtl[ctx].dma = 0; 1141 1142 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1143 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1144 1145 skb_put(skb,len); 1146 } 1147 1148 atomic_sub(count, &priv->buckets_out); 1149 priv->total_received += count; 1150 1151 if (priv->mpt_rxfidx_tail >= MPT_LAN_MAX_BUCKETS_OUT) { 1152 printk (KERN_ERR MYNAM ": %s/%s: Yoohoo! mpt_rxfidx_tail = %d, " 1153 "MPT_LAN_MAX_BUCKETS_OUT = %d\n", 1154 IOC_AND_NETDEV_NAMES_s_s(dev), 1155 priv->mpt_rxfidx_tail, 1156 MPT_LAN_MAX_BUCKETS_OUT); 1157 1158 return -1; 1159 } 1160 1161 if (remaining == 0) 1162 printk (KERN_WARNING MYNAM ": %s/%s: WARNING - IOC out of buckets! " 1163 "(priv->buckets_out = %d)\n", 1164 IOC_AND_NETDEV_NAMES_s_s(dev), 1165 atomic_read(&priv->buckets_out)); 1166 else if (remaining < 10) 1167 printk (KERN_INFO MYNAM ": %s/%s: IOC says %d buckets left. " 1168 "(priv->buckets_out = %d)\n", 1169 IOC_AND_NETDEV_NAMES_s_s(dev), 1170 remaining, atomic_read(&priv->buckets_out)); 1171 1172 if ((remaining < priv->bucketthresh) && 1173 ((atomic_read(&priv->buckets_out) - remaining) > 1174 MPT_LAN_BUCKETS_REMAIN_MISMATCH_THRESH)) { 1175 1176 printk (KERN_WARNING MYNAM " Mismatch between driver's " 1177 "buckets_out count and fw's BucketsRemaining " 1178 "count has crossed the threshold, issuing a " 1179 "LanReset to clear the fw's hashtable. You may " 1180 "want to check your /var/log/messages for \"CRC " 1181 "error\" event notifications.\n"); 1182 1183 mpt_lan_reset(dev); 1184 mpt_lan_wake_post_buckets_task(dev, 0); 1185 } 1186 1187 return mpt_lan_receive_skb(dev, skb); 1188 } 1189 1190 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1191 /* Simple SGE's only at the moment */ 1192 1193 static void 1194 mpt_lan_post_receive_buckets(struct mpt_lan_priv *priv) 1195 { 1196 struct net_device *dev = priv->dev; 1197 MPT_ADAPTER *mpt_dev = priv->mpt_dev; 1198 MPT_FRAME_HDR *mf; 1199 LANReceivePostRequest_t *pRecvReq; 1200 SGETransaction32_t *pTrans; 1201 SGESimple64_t *pSimple; 1202 struct sk_buff *skb; 1203 dma_addr_t dma; 1204 u32 curr, buckets, count, max; 1205 u32 len = (dev->mtu + dev->hard_header_len + 4); 1206 unsigned long flags; 1207 int i; 1208 1209 curr = atomic_read(&priv->buckets_out); 1210 buckets = (priv->max_buckets_out - curr); 1211 1212 dioprintk((KERN_INFO MYNAM ": %s/%s: @%s, Start_buckets = %u, buckets_out = %u\n", 1213 IOC_AND_NETDEV_NAMES_s_s(dev), 1214 __FUNCTION__, buckets, curr)); 1215 1216 max = (mpt_dev->req_sz - MPT_LAN_RECEIVE_POST_REQUEST_SIZE) / 1217 (MPT_LAN_TRANSACTION32_SIZE + sizeof(SGESimple64_t)); 1218 1219 while (buckets) { 1220 mf = mpt_get_msg_frame(LanCtx, mpt_dev); 1221 if (mf == NULL) { 1222 printk (KERN_ERR "%s: Unable to alloc request frame\n", 1223 __FUNCTION__); 1224 dioprintk((KERN_ERR "%s: %u buckets remaining\n", 1225 __FUNCTION__, buckets)); 1226 goto out; 1227 } 1228 pRecvReq = (LANReceivePostRequest_t *) mf; 1229 1230 count = buckets; 1231 if (count > max) 1232 count = max; 1233 1234 pRecvReq->Function = MPI_FUNCTION_LAN_RECEIVE; 1235 pRecvReq->ChainOffset = 0; 1236 pRecvReq->MsgFlags = 0; 1237 pRecvReq->PortNumber = priv->pnum; 1238 1239 pTrans = (SGETransaction32_t *) pRecvReq->SG_List; 1240 pSimple = NULL; 1241 1242 for (i = 0; i < count; i++) { 1243 int ctx; 1244 1245 spin_lock_irqsave(&priv->rxfidx_lock, flags); 1246 if (priv->mpt_rxfidx_tail < 0) { 1247 printk (KERN_ERR "%s: Can't alloc context\n", 1248 __FUNCTION__); 1249 spin_unlock_irqrestore(&priv->rxfidx_lock, 1250 flags); 1251 break; 1252 } 1253 1254 ctx = priv->mpt_rxfidx[priv->mpt_rxfidx_tail--]; 1255 1256 skb = priv->RcvCtl[ctx].skb; 1257 if (skb && (priv->RcvCtl[ctx].len != len)) { 1258 pci_unmap_single(mpt_dev->pcidev, 1259 priv->RcvCtl[ctx].dma, 1260 priv->RcvCtl[ctx].len, 1261 PCI_DMA_FROMDEVICE); 1262 dev_kfree_skb(priv->RcvCtl[ctx].skb); 1263 skb = priv->RcvCtl[ctx].skb = NULL; 1264 } 1265 1266 if (skb == NULL) { 1267 skb = dev_alloc_skb(len); 1268 if (skb == NULL) { 1269 printk (KERN_WARNING 1270 MYNAM "/%s: Can't alloc skb\n", 1271 __FUNCTION__); 1272 priv->mpt_rxfidx[++priv->mpt_rxfidx_tail] = ctx; 1273 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1274 break; 1275 } 1276 1277 dma = pci_map_single(mpt_dev->pcidev, skb->data, 1278 len, PCI_DMA_FROMDEVICE); 1279 1280 priv->RcvCtl[ctx].skb = skb; 1281 priv->RcvCtl[ctx].dma = dma; 1282 priv->RcvCtl[ctx].len = len; 1283 } 1284 1285 spin_unlock_irqrestore(&priv->rxfidx_lock, flags); 1286 1287 pTrans->ContextSize = sizeof(u32); 1288 pTrans->DetailsLength = 0; 1289 pTrans->Flags = 0; 1290 pTrans->TransactionContext[0] = cpu_to_le32(ctx); 1291 1292 pSimple = (SGESimple64_t *) pTrans->TransactionDetails; 1293 1294 pSimple->FlagsLength = cpu_to_le32( 1295 ((MPI_SGE_FLAGS_END_OF_BUFFER | 1296 MPI_SGE_FLAGS_SIMPLE_ELEMENT | 1297 MPI_SGE_FLAGS_64_BIT_ADDRESSING) << MPI_SGE_FLAGS_SHIFT) | len); 1298 pSimple->Address.Low = cpu_to_le32((u32) priv->RcvCtl[ctx].dma); 1299 if (sizeof(dma_addr_t) > sizeof(u32)) 1300 pSimple->Address.High = cpu_to_le32((u32) ((u64) priv->RcvCtl[ctx].dma >> 32)); 1301 else 1302 pSimple->Address.High = 0; 1303 1304 pTrans = (SGETransaction32_t *) (pSimple + 1); 1305 } 1306 1307 if (pSimple == NULL) { 1308 /**/ printk (KERN_WARNING MYNAM "/%s: No buckets posted\n", 1309 /**/ __FUNCTION__); 1310 mpt_free_msg_frame(mpt_dev, mf); 1311 goto out; 1312 } 1313 1314 pSimple->FlagsLength |= cpu_to_le32(MPI_SGE_FLAGS_END_OF_LIST << MPI_SGE_FLAGS_SHIFT); 1315 1316 pRecvReq->BucketCount = cpu_to_le32(i); 1317 1318 /* printk(KERN_INFO MYNAM ": posting buckets\n "); 1319 * for (i = 0; i < j + 2; i ++) 1320 * printk (" %08x", le32_to_cpu(msg[i])); 1321 * printk ("\n"); 1322 */ 1323 1324 mpt_put_msg_frame(LanCtx, mpt_dev, mf); 1325 1326 priv->total_posted += i; 1327 buckets -= i; 1328 atomic_add(i, &priv->buckets_out); 1329 } 1330 1331 out: 1332 dioprintk((KERN_INFO MYNAM "/%s: End_buckets = %u, priv->buckets_out = %u\n", 1333 __FUNCTION__, buckets, atomic_read(&priv->buckets_out))); 1334 dioprintk((KERN_INFO MYNAM "/%s: Posted %u buckets and received %u back\n", 1335 __FUNCTION__, priv->total_posted, priv->total_received)); 1336 1337 clear_bit(0, &priv->post_buckets_active); 1338 } 1339 1340 static void 1341 mpt_lan_post_receive_buckets_work(struct work_struct *work) 1342 { 1343 mpt_lan_post_receive_buckets(container_of(work, struct mpt_lan_priv, 1344 post_buckets_task.work)); 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->dev = dev; 1363 priv->mpt_dev = mpt_dev; 1364 priv->pnum = pnum; 1365 1366 memset(&priv->post_buckets_task, 0, sizeof(priv->post_buckets_task)); 1367 INIT_DELAYED_WORK(&priv->post_buckets_task, 1368 mpt_lan_post_receive_buckets_work); 1369 priv->post_buckets_active = 0; 1370 1371 dlprintk((KERN_INFO MYNAM "@%d: bucketlen = %d\n", 1372 __LINE__, dev->mtu + dev->hard_header_len + 4)); 1373 1374 atomic_set(&priv->buckets_out, 0); 1375 priv->total_posted = 0; 1376 priv->total_received = 0; 1377 priv->max_buckets_out = max_buckets_out; 1378 if (mpt_dev->pfacts[0].MaxLanBuckets < max_buckets_out) 1379 priv->max_buckets_out = mpt_dev->pfacts[0].MaxLanBuckets; 1380 1381 dlprintk((KERN_INFO MYNAM "@%d: MaxLanBuckets=%d, max_buckets_out/priv=%d/%d\n", 1382 __LINE__, 1383 mpt_dev->pfacts[0].MaxLanBuckets, 1384 max_buckets_out, 1385 priv->max_buckets_out)); 1386 1387 priv->bucketthresh = priv->max_buckets_out * 2 / 3; 1388 spin_lock_init(&priv->txfidx_lock); 1389 spin_lock_init(&priv->rxfidx_lock); 1390 1391 memset(&priv->stats, 0, sizeof(priv->stats)); 1392 1393 /* Grab pre-fetched LANPage1 stuff. :-) */ 1394 a = (u8 *) &mpt_dev->lan_cnfg_page1.HardwareAddressLow; 1395 1396 HWaddr[0] = a[5]; 1397 HWaddr[1] = a[4]; 1398 HWaddr[2] = a[3]; 1399 HWaddr[3] = a[2]; 1400 HWaddr[4] = a[1]; 1401 HWaddr[5] = a[0]; 1402 1403 dev->addr_len = FC_ALEN; 1404 memcpy(dev->dev_addr, HWaddr, FC_ALEN); 1405 memset(dev->broadcast, 0xff, FC_ALEN); 1406 1407 /* The Tx queue is 127 deep on the 909. 1408 * Give ourselves some breathing room. 1409 */ 1410 priv->tx_max_out = (tx_max_out_p <= MPT_TX_MAX_OUT_LIM) ? 1411 tx_max_out_p : MPT_TX_MAX_OUT_LIM; 1412 1413 dev->open = mpt_lan_open; 1414 dev->stop = mpt_lan_close; 1415 dev->get_stats = mpt_lan_get_stats; 1416 dev->set_multicast_list = NULL; 1417 dev->change_mtu = mpt_lan_change_mtu; 1418 dev->hard_start_xmit = mpt_lan_sdu_send; 1419 1420 /* Not in 2.3.42. Need 2.3.45+ */ 1421 dev->tx_timeout = mpt_lan_tx_timeout; 1422 dev->watchdog_timeo = MPT_LAN_TX_TIMEOUT; 1423 1424 dlprintk((KERN_INFO MYNAM ": Finished registering dev " 1425 "and setting initial values\n")); 1426 1427 SET_MODULE_OWNER(dev); 1428 1429 if (register_netdev(dev) != 0) { 1430 free_netdev(dev); 1431 dev = NULL; 1432 } 1433 return dev; 1434 } 1435 1436 static int 1437 mptlan_probe(struct pci_dev *pdev, const struct pci_device_id *id) 1438 { 1439 MPT_ADAPTER *ioc = pci_get_drvdata(pdev); 1440 struct net_device *dev; 1441 int i; 1442 1443 for (i = 0; i < ioc->facts.NumberOfPorts; i++) { 1444 printk(KERN_INFO MYNAM ": %s: PortNum=%x, " 1445 "ProtocolFlags=%02Xh (%c%c%c%c)\n", 1446 ioc->name, ioc->pfacts[i].PortNumber, 1447 ioc->pfacts[i].ProtocolFlags, 1448 MPT_PROTOCOL_FLAGS_c_c_c_c( 1449 ioc->pfacts[i].ProtocolFlags)); 1450 1451 if (!(ioc->pfacts[i].ProtocolFlags & 1452 MPI_PORTFACTS_PROTOCOL_LAN)) { 1453 printk(KERN_INFO MYNAM ": %s: Hmmm... LAN protocol " 1454 "seems to be disabled on this adapter port!\n", 1455 ioc->name); 1456 continue; 1457 } 1458 1459 dev = mpt_register_lan_device(ioc, i); 1460 if (!dev) { 1461 printk(KERN_ERR MYNAM ": %s: Unable to register " 1462 "port%d as a LAN device\n", ioc->name, 1463 ioc->pfacts[i].PortNumber); 1464 continue; 1465 } 1466 1467 printk(KERN_INFO MYNAM ": %s: Fusion MPT LAN device " 1468 "registered as '%s'\n", ioc->name, dev->name); 1469 printk(KERN_INFO MYNAM ": %s/%s: " 1470 "LanAddr = %02X:%02X:%02X:%02X:%02X:%02X\n", 1471 IOC_AND_NETDEV_NAMES_s_s(dev), 1472 dev->dev_addr[0], dev->dev_addr[1], 1473 dev->dev_addr[2], dev->dev_addr[3], 1474 dev->dev_addr[4], dev->dev_addr[5]); 1475 1476 ioc->netdev = dev; 1477 1478 return 0; 1479 } 1480 1481 return -ENODEV; 1482 } 1483 1484 static void 1485 mptlan_remove(struct pci_dev *pdev) 1486 { 1487 MPT_ADAPTER *ioc = pci_get_drvdata(pdev); 1488 struct net_device *dev = ioc->netdev; 1489 1490 if(dev != NULL) { 1491 unregister_netdev(dev); 1492 free_netdev(dev); 1493 } 1494 } 1495 1496 static struct mpt_pci_driver mptlan_driver = { 1497 .probe = mptlan_probe, 1498 .remove = mptlan_remove, 1499 }; 1500 1501 static int __init mpt_lan_init (void) 1502 { 1503 show_mptmod_ver(LANAME, LANVER); 1504 1505 if ((LanCtx = mpt_register(lan_reply, MPTLAN_DRIVER)) <= 0) { 1506 printk (KERN_ERR MYNAM ": Failed to register with MPT base driver\n"); 1507 return -EBUSY; 1508 } 1509 1510 /* Set the callback index to be used by driver core for turbo replies */ 1511 mpt_lan_index = LanCtx; 1512 1513 dlprintk((KERN_INFO MYNAM ": assigned context of %d\n", LanCtx)); 1514 1515 if (mpt_reset_register(LanCtx, mpt_lan_ioc_reset)) { 1516 printk(KERN_ERR MYNAM ": Eieee! unable to register a reset " 1517 "handler with mptbase! The world is at an end! " 1518 "Everything is fading to black! Goodbye.\n"); 1519 return -EBUSY; 1520 } 1521 1522 dlprintk((KERN_INFO MYNAM ": Registered for IOC reset notifications\n")); 1523 1524 if (mpt_device_driver_register(&mptlan_driver, MPTLAN_DRIVER)) 1525 dprintk((KERN_INFO MYNAM ": failed to register dd callbacks\n")); 1526 return 0; 1527 } 1528 1529 static void __exit mpt_lan_exit(void) 1530 { 1531 mpt_device_driver_deregister(MPTLAN_DRIVER); 1532 mpt_reset_deregister(LanCtx); 1533 1534 if (LanCtx >= 0) { 1535 mpt_deregister(LanCtx); 1536 LanCtx = -1; 1537 mpt_lan_index = 0; 1538 } 1539 } 1540 1541 module_init(mpt_lan_init); 1542 module_exit(mpt_lan_exit); 1543 1544 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1545 static unsigned short 1546 mpt_lan_type_trans(struct sk_buff *skb, struct net_device *dev) 1547 { 1548 struct mpt_lan_ohdr *fch = (struct mpt_lan_ohdr *)skb->data; 1549 struct fcllc *fcllc; 1550 1551 skb->mac.raw = skb->data; 1552 skb_pull(skb, sizeof(struct mpt_lan_ohdr)); 1553 1554 if (fch->dtype == htons(0xffff)) { 1555 u32 *p = (u32 *) fch; 1556 1557 swab32s(p + 0); 1558 swab32s(p + 1); 1559 swab32s(p + 2); 1560 swab32s(p + 3); 1561 1562 printk (KERN_WARNING MYNAM ": %s: WARNING - Broadcast swap F/W bug detected!\n", 1563 NETDEV_PTR_TO_IOC_NAME_s(dev)); 1564 printk (KERN_WARNING MYNAM ": Please update sender @ MAC_addr = %02x:%02x:%02x:%02x:%02x:%02x\n", 1565 fch->saddr[0], fch->saddr[1], fch->saddr[2], 1566 fch->saddr[3], fch->saddr[4], fch->saddr[5]); 1567 } 1568 1569 if (*fch->daddr & 1) { 1570 if (!memcmp(fch->daddr, dev->broadcast, FC_ALEN)) { 1571 skb->pkt_type = PACKET_BROADCAST; 1572 } else { 1573 skb->pkt_type = PACKET_MULTICAST; 1574 } 1575 } else { 1576 if (memcmp(fch->daddr, dev->dev_addr, FC_ALEN)) { 1577 skb->pkt_type = PACKET_OTHERHOST; 1578 } else { 1579 skb->pkt_type = PACKET_HOST; 1580 } 1581 } 1582 1583 fcllc = (struct fcllc *)skb->data; 1584 1585 #ifdef QLOGIC_NAA_WORKAROUND 1586 { 1587 u16 source_naa = fch->stype, found = 0; 1588 1589 /* Workaround for QLogic not following RFC 2625 in regards to the NAA 1590 value. */ 1591 1592 if ((source_naa & 0xF000) == 0) 1593 source_naa = swab16(source_naa); 1594 1595 if (fcllc->ethertype == htons(ETH_P_ARP)) 1596 dlprintk ((KERN_INFO "mptlan/type_trans: got arp req/rep w/ naa of " 1597 "%04x.\n", source_naa)); 1598 1599 if ((fcllc->ethertype == htons(ETH_P_ARP)) && 1600 ((source_naa >> 12) != MPT_LAN_NAA_RFC2625)){ 1601 struct NAA_Hosed *nh, *prevnh; 1602 int i; 1603 1604 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep from " 1605 "system with non-RFC 2625 NAA value (%04x).\n", 1606 source_naa)); 1607 1608 write_lock_irq(&bad_naa_lock); 1609 for (prevnh = nh = mpt_bad_naa; nh != NULL; 1610 prevnh=nh, nh=nh->next) { 1611 if ((nh->ieee[0] == fch->saddr[0]) && 1612 (nh->ieee[1] == fch->saddr[1]) && 1613 (nh->ieee[2] == fch->saddr[2]) && 1614 (nh->ieee[3] == fch->saddr[3]) && 1615 (nh->ieee[4] == fch->saddr[4]) && 1616 (nh->ieee[5] == fch->saddr[5])) { 1617 found = 1; 1618 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Re" 1619 "q/Rep w/ bad NAA from system already" 1620 " in DB.\n")); 1621 break; 1622 } 1623 } 1624 1625 if ((!found) && (nh == NULL)) { 1626 1627 nh = kmalloc(sizeof(struct NAA_Hosed), GFP_KERNEL); 1628 dlprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep w/" 1629 " bad NAA from system not yet in DB.\n")); 1630 1631 if (nh != NULL) { 1632 nh->next = NULL; 1633 if (!mpt_bad_naa) 1634 mpt_bad_naa = nh; 1635 if (prevnh) 1636 prevnh->next = nh; 1637 1638 nh->NAA = source_naa; /* Set the S_NAA value. */ 1639 for (i = 0; i < FC_ALEN; i++) 1640 nh->ieee[i] = fch->saddr[i]; 1641 dlprintk ((KERN_INFO "Got ARP from %02x:%02x:%02x:%02x:" 1642 "%02x:%02x with non-compliant S_NAA value.\n", 1643 fch->saddr[0], fch->saddr[1], fch->saddr[2], 1644 fch->saddr[3], fch->saddr[4],fch->saddr[5])); 1645 } else { 1646 printk (KERN_ERR "mptlan/type_trans: Unable to" 1647 " kmalloc a NAA_Hosed struct.\n"); 1648 } 1649 } else if (!found) { 1650 printk (KERN_ERR "mptlan/type_trans: found not" 1651 " set, but nh isn't null. Evil " 1652 "funkiness abounds.\n"); 1653 } 1654 write_unlock_irq(&bad_naa_lock); 1655 } 1656 } 1657 #endif 1658 1659 /* Strip the SNAP header from ARP packets since we don't 1660 * pass them through to the 802.2/SNAP layers. 1661 */ 1662 if (fcllc->dsap == EXTENDED_SAP && 1663 (fcllc->ethertype == htons(ETH_P_IP) || 1664 fcllc->ethertype == htons(ETH_P_ARP))) { 1665 skb_pull(skb, sizeof(struct fcllc)); 1666 return fcllc->ethertype; 1667 } 1668 1669 return htons(ETH_P_802_2); 1670 } 1671 1672 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ 1673