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