drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 #include <linux/kernel.h>
  17 #include <linux/string.h>
  18 #include <linux/sched.h>
  19 #include <linux/netdevice.h>
  20 #include <asm/unaligned.h>
  21 #include <defs.h>
  22 #include <brcmu_wifi.h>
  23 #include <brcmu_utils.h>
  24 #include "dhd.h"
  25 #include "dhd_bus.h"
  26 #include "dhd_proto.h"
  27 #include "dhd_dbg.h"
  28
  29 #define BRCM_OUI                        "\x00\x10\x18"
  30 #define DOT11_OUI_LEN                   3
  31 #define BCMILCP_BCM_SUBTYPE_EVENT       1
  32 #define PKTFILTER_BUF_SIZE              2048
  33 #define BRCMF_ARPOL_MODE                0xb     /* agent|snoop|peer_autoreply */
  34
  35 #define MSGTRACE_VERSION        1
  36
  37 #define BRCMF_PKT_FILTER_FIXED_LEN      offsetof(struct brcmf_pkt_filter_le, u)
  38 #define BRCMF_PKT_FILTER_PATTERN_FIXED_LEN      \
  39         offsetof(struct brcmf_pkt_filter_pattern_le, mask_and_pattern)
  40
  41 #ifdef BCMDBG
  42 static const char brcmf_version[] =
  43         "Dongle Host Driver, version " BRCMF_VERSION_STR "\nCompiled on "
  44         __DATE__ " at " __TIME__;
  45 #else
  46 static const char brcmf_version[] =
  47         "Dongle Host Driver, version " BRCMF_VERSION_STR;
  48 #endif
  49
  50 /* Message trace header */
  51 struct msgtrace_hdr {
  52         u8 version;
  53         u8 spare;
  54         __be16 len;             /* Len of the trace */
  55         __be32 seqnum;          /* Sequence number of message. Useful
  56                                  * if the messsage has been lost
  57                                  * because of DMA error or a bus reset
  58                                  * (ex: SDIO Func2)
  59                                  */
  60         __be32 discarded_bytes; /* Number of discarded bytes because of
  61                                  trace overflow  */
  62         __be32 discarded_printf;        /* Number of discarded printf
  63                                  because of trace overflow */
  64 } __packed;
  65
  66
  67 uint
  68 brcmf_c_mkiovar(char *name, char *data, uint datalen, char *buf, uint buflen)
  69 {
  70         uint len;
  71
  72         len = strlen(name) + 1;
  73
  74         if ((len + datalen) > buflen)
  75                 return 0;
  76
  77         strncpy(buf, name, buflen);
  78
  79         /* append data onto the end of the name string */
  80         memcpy(&buf[len], data, datalen);
  81         len += datalen;
  82
  83         return len;
  84 }
  85
  86 bool brcmf_c_prec_enq(struct device *dev, struct pktq *q,
  87                       struct sk_buff *pkt, int prec)
  88 {
  89         struct sk_buff *p;
  90         int eprec = -1;         /* precedence to evict from */
  91         bool discard_oldest;
  92         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
  93         struct brcmf_pub *drvr = bus_if->drvr;
  94
  95         /* Fast case, precedence queue is not full and we are also not
  96          * exceeding total queue length
  97          */
  98         if (!pktq_pfull(q, prec) && !pktq_full(q)) {
  99                 brcmu_pktq_penq(q, prec, pkt);
 100                 return true;
 101         }
 102
 103         /* Determine precedence from which to evict packet, if any */
 104         if (pktq_pfull(q, prec))
 105                 eprec = prec;
 106         else if (pktq_full(q)) {
 107                 p = brcmu_pktq_peek_tail(q, &eprec);
 108                 if (eprec > prec)
 109                         return false;
 110         }
 111
 112         /* Evict if needed */
 113         if (eprec >= 0) {
 114                 /* Detect queueing to unconfigured precedence */
 115                 discard_oldest = ac_bitmap_tst(drvr->wme_dp, eprec);
 116                 if (eprec == prec && !discard_oldest)
 117                         return false;   /* refuse newer (incoming) packet */
 118                 /* Evict packet according to discard policy */
 119                 p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) :
 120                         brcmu_pktq_pdeq_tail(q, eprec);
 121                 if (p == NULL)
 122                         brcmf_dbg(ERROR, "brcmu_pktq_penq() failed, oldest %d\n",
 123                                   discard_oldest);
 124
 125                 brcmu_pkt_buf_free_skb(p);
 126         }
 127
 128         /* Enqueue */
 129         p = brcmu_pktq_penq(q, prec, pkt);
 130         if (p == NULL)
 131                 brcmf_dbg(ERROR, "brcmu_pktq_penq() failed\n");
 132
 133         return p != NULL;
 134 }
 135
 136 #ifdef BCMDBG
 137 static void
 138 brcmf_c_show_host_event(struct brcmf_event_msg *event, void *event_data)
 139 {
 140         uint i, status, reason;
 141         bool group = false, flush_txq = false, link = false;
 142         char *auth_str, *event_name;
 143         unsigned char *buf;
 144         char err_msg[256], eabuf[ETHER_ADDR_STR_LEN];
 145         static struct {
 146                 uint event;
 147                 char *event_name;
 148         } event_names[] = {
 149                 {
 150                 BRCMF_E_SET_SSID, "SET_SSID"}, {
 151                 BRCMF_E_JOIN, "JOIN"}, {
 152                 BRCMF_E_START, "START"}, {
 153                 BRCMF_E_AUTH, "AUTH"}, {
 154                 BRCMF_E_AUTH_IND, "AUTH_IND"}, {
 155                 BRCMF_E_DEAUTH, "DEAUTH"}, {
 156                 BRCMF_E_DEAUTH_IND, "DEAUTH_IND"}, {
 157                 BRCMF_E_ASSOC, "ASSOC"}, {
 158                 BRCMF_E_ASSOC_IND, "ASSOC_IND"}, {
 159                 BRCMF_E_REASSOC, "REASSOC"}, {
 160                 BRCMF_E_REASSOC_IND, "REASSOC_IND"}, {
 161                 BRCMF_E_DISASSOC, "DISASSOC"}, {
 162                 BRCMF_E_DISASSOC_IND, "DISASSOC_IND"}, {
 163                 BRCMF_E_QUIET_START, "START_QUIET"}, {
 164                 BRCMF_E_QUIET_END, "END_QUIET"}, {
 165                 BRCMF_E_BEACON_RX, "BEACON_RX"}, {
 166                 BRCMF_E_LINK, "LINK"}, {
 167                 BRCMF_E_MIC_ERROR, "MIC_ERROR"}, {
 168                 BRCMF_E_NDIS_LINK, "NDIS_LINK"}, {
 169                 BRCMF_E_ROAM, "ROAM"}, {
 170                 BRCMF_E_TXFAIL, "TXFAIL"}, {
 171                 BRCMF_E_PMKID_CACHE, "PMKID_CACHE"}, {
 172                 BRCMF_E_RETROGRADE_TSF, "RETROGRADE_TSF"}, {
 173                 BRCMF_E_PRUNE, "PRUNE"}, {
 174                 BRCMF_E_AUTOAUTH, "AUTOAUTH"}, {
 175                 BRCMF_E_EAPOL_MSG, "EAPOL_MSG"}, {
 176                 BRCMF_E_SCAN_COMPLETE, "SCAN_COMPLETE"}, {
 177                 BRCMF_E_ADDTS_IND, "ADDTS_IND"}, {
 178                 BRCMF_E_DELTS_IND, "DELTS_IND"}, {
 179                 BRCMF_E_BCNSENT_IND, "BCNSENT_IND"}, {
 180                 BRCMF_E_BCNRX_MSG, "BCNRX_MSG"}, {
 181                 BRCMF_E_BCNLOST_MSG, "BCNLOST_MSG"}, {
 182                 BRCMF_E_ROAM_PREP, "ROAM_PREP"}, {
 183                 BRCMF_E_PFN_NET_FOUND, "PNO_NET_FOUND"}, {
 184                 BRCMF_E_PFN_NET_LOST, "PNO_NET_LOST"}, {
 185                 BRCMF_E_RESET_COMPLETE, "RESET_COMPLETE"}, {
 186                 BRCMF_E_JOIN_START, "JOIN_START"}, {
 187                 BRCMF_E_ROAM_START, "ROAM_START"}, {
 188                 BRCMF_E_ASSOC_START, "ASSOC_START"}, {
 189                 BRCMF_E_IBSS_ASSOC, "IBSS_ASSOC"}, {
 190                 BRCMF_E_RADIO, "RADIO"}, {
 191                 BRCMF_E_PSM_WATCHDOG, "PSM_WATCHDOG"}, {
 192                 BRCMF_E_PROBREQ_MSG, "PROBREQ_MSG"}, {
 193                 BRCMF_E_SCAN_CONFIRM_IND, "SCAN_CONFIRM_IND"}, {
 194                 BRCMF_E_PSK_SUP, "PSK_SUP"}, {
 195                 BRCMF_E_COUNTRY_CODE_CHANGED, "COUNTRY_CODE_CHANGED"}, {
 196                 BRCMF_E_EXCEEDED_MEDIUM_TIME, "EXCEEDED_MEDIUM_TIME"}, {
 197                 BRCMF_E_ICV_ERROR, "ICV_ERROR"}, {
 198                 BRCMF_E_UNICAST_DECODE_ERROR, "UNICAST_DECODE_ERROR"}, {
 199                 BRCMF_E_MULTICAST_DECODE_ERROR, "MULTICAST_DECODE_ERROR"}, {
 200                 BRCMF_E_TRACE, "TRACE"}, {
 201                 BRCMF_E_ACTION_FRAME, "ACTION FRAME"}, {
 202                 BRCMF_E_ACTION_FRAME_COMPLETE, "ACTION FRAME TX COMPLETE"}, {
 203                 BRCMF_E_IF, "IF"}, {
 204                 BRCMF_E_RSSI, "RSSI"}, {
 205                 BRCMF_E_PFN_SCAN_COMPLETE, "SCAN_COMPLETE"}
 206         };
 207         uint event_type, flags, auth_type, datalen;
 208         static u32 seqnum_prev;
 209         struct msgtrace_hdr hdr;
 210         u32 nblost;
 211         char *s, *p;
 212
 213         event_type = be32_to_cpu(event->event_type);
 214         flags = be16_to_cpu(event->flags);
 215         status = be32_to_cpu(event->status);
 216         reason = be32_to_cpu(event->reason);
 217         auth_type = be32_to_cpu(event->auth_type);
 218         datalen = be32_to_cpu(event->datalen);
 219         /* debug dump of event messages */
 220         sprintf(eabuf, "%pM", event->addr);
 221
 222         event_name = "UNKNOWN";
 223         for (i = 0; i < ARRAY_SIZE(event_names); i++) {
 224                 if (event_names[i].event == event_type)
 225                         event_name = event_names[i].event_name;
 226         }
 227
 228         brcmf_dbg(EVENT, "EVENT: %s, event ID = %d\n", event_name, event_type);
 229         brcmf_dbg(EVENT, "flags 0x%04x, status %d, reason %d, auth_type %d MAC %s\n",
 230                   flags, status, reason, auth_type, eabuf);
 231
 232         if (flags & BRCMF_EVENT_MSG_LINK)
 233                 link = true;
 234         if (flags & BRCMF_EVENT_MSG_GROUP)
 235                 group = true;
 236         if (flags & BRCMF_EVENT_MSG_FLUSHTXQ)
 237                 flush_txq = true;
 238
 239         switch (event_type) {
 240         case BRCMF_E_START:
 241         case BRCMF_E_DEAUTH:
 242         case BRCMF_E_DISASSOC:
 243                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 244                 break;
 245
 246         case BRCMF_E_ASSOC_IND:
 247         case BRCMF_E_REASSOC_IND:
 248                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 249                 break;
 250
 251         case BRCMF_E_ASSOC:
 252         case BRCMF_E_REASSOC:
 253                 if (status == BRCMF_E_STATUS_SUCCESS)
 254                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, SUCCESS\n",
 255                                   event_name, eabuf);
 256                 else if (status == BRCMF_E_STATUS_TIMEOUT)
 257                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, TIMEOUT\n",
 258                                   event_name, eabuf);
 259                 else if (status == BRCMF_E_STATUS_FAIL)
 260                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, FAILURE, reason %d\n",
 261                                   event_name, eabuf, (int)reason);
 262                 else
 263                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, unexpected status %d\n",
 264                                   event_name, eabuf, (int)status);
 265                 break;
 266
 267         case BRCMF_E_DEAUTH_IND:
 268         case BRCMF_E_DISASSOC_IND:
 269                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, reason %d\n",
 270                           event_name, eabuf, (int)reason);
 271                 break;
 272
 273         case BRCMF_E_AUTH:
 274         case BRCMF_E_AUTH_IND:
 275                 if (auth_type == WLAN_AUTH_OPEN)
 276                         auth_str = "Open System";
 277                 else if (auth_type == WLAN_AUTH_SHARED_KEY)
 278                         auth_str = "Shared Key";
 279                 else {
 280                         sprintf(err_msg, "AUTH unknown: %d", (int)auth_type);
 281                         auth_str = err_msg;
 282                 }
 283                 if (event_type == BRCMF_E_AUTH_IND)
 284                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s\n",
 285                                   event_name, eabuf, auth_str);
 286                 else if (status == BRCMF_E_STATUS_SUCCESS)
 287                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, SUCCESS\n",
 288                                   event_name, eabuf, auth_str);
 289                 else if (status == BRCMF_E_STATUS_TIMEOUT)
 290                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, TIMEOUT\n",
 291                                   event_name, eabuf, auth_str);
 292                 else if (status == BRCMF_E_STATUS_FAIL) {
 293                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, FAILURE, reason %d\n",
 294                                   event_name, eabuf, auth_str, (int)reason);
 295                 }
 296
 297                 break;
 298
 299         case BRCMF_E_JOIN:
 300         case BRCMF_E_ROAM:
 301         case BRCMF_E_SET_SSID:
 302                 if (status == BRCMF_E_STATUS_SUCCESS)
 303                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n",
 304                                   event_name, eabuf);
 305                 else if (status == BRCMF_E_STATUS_FAIL)
 306                         brcmf_dbg(EVENT, "MACEVENT: %s, failed\n", event_name);
 307                 else if (status == BRCMF_E_STATUS_NO_NETWORKS)
 308                         brcmf_dbg(EVENT, "MACEVENT: %s, no networks found\n",
 309                                   event_name);
 310                 else
 311                         brcmf_dbg(EVENT, "MACEVENT: %s, unexpected status %d\n",
 312                                   event_name, (int)status);
 313                 break;
 314
 315         case BRCMF_E_BEACON_RX:
 316                 if (status == BRCMF_E_STATUS_SUCCESS)
 317                         brcmf_dbg(EVENT, "MACEVENT: %s, SUCCESS\n", event_name);
 318                 else if (status == BRCMF_E_STATUS_FAIL)
 319                         brcmf_dbg(EVENT, "MACEVENT: %s, FAIL\n", event_name);
 320                 else
 321                         brcmf_dbg(EVENT, "MACEVENT: %s, status %d\n",
 322                                   event_name, status);
 323                 break;
 324
 325         case BRCMF_E_LINK:
 326                 brcmf_dbg(EVENT, "MACEVENT: %s %s\n",
 327                           event_name, link ? "UP" : "DOWN");
 328                 break;
 329
 330         case BRCMF_E_MIC_ERROR:
 331                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, Group %d, Flush %d\n",
 332                           event_name, eabuf, group, flush_txq);
 333                 break;
 334
 335         case BRCMF_E_ICV_ERROR:
 336         case BRCMF_E_UNICAST_DECODE_ERROR:
 337         case BRCMF_E_MULTICAST_DECODE_ERROR:
 338                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 339                 break;
 340
 341         case BRCMF_E_TXFAIL:
 342                 brcmf_dbg(EVENT, "MACEVENT: %s, RA %s\n", event_name, eabuf);
 343                 break;
 344
 345         case BRCMF_E_SCAN_COMPLETE:
 346         case BRCMF_E_PMKID_CACHE:
 347                 brcmf_dbg(EVENT, "MACEVENT: %s\n", event_name);
 348                 break;
 349
 350         case BRCMF_E_PFN_NET_FOUND:
 351         case BRCMF_E_PFN_NET_LOST:
 352         case BRCMF_E_PFN_SCAN_COMPLETE:
 353                 brcmf_dbg(EVENT, "PNOEVENT: %s\n", event_name);
 354                 break;
 355
 356         case BRCMF_E_PSK_SUP:
 357         case BRCMF_E_PRUNE:
 358                 brcmf_dbg(EVENT, "MACEVENT: %s, status %d, reason %d\n",
 359                           event_name, (int)status, (int)reason);
 360                 break;
 361
 362         case BRCMF_E_TRACE:
 363                 buf = (unsigned char *) event_data;
 364                 memcpy(&hdr, buf, sizeof(struct msgtrace_hdr));
 365
 366                 if (hdr.version != MSGTRACE_VERSION) {
 367                         brcmf_dbg(ERROR,
 368                                   "MACEVENT: %s [unsupported version --> brcmf"
 369                                   " version:%d dongle version:%d]\n",
 370                                   event_name, MSGTRACE_VERSION, hdr.version);
 371                         /* Reset datalen to avoid display below */
 372                         datalen = 0;
 373                         break;
 374                 }
 375
 376                 /* There are 2 bytes available at the end of data */
 377                 *(buf + sizeof(struct msgtrace_hdr)
 378                          + be16_to_cpu(hdr.len)) = '\0';
 379
 380                 if (be32_to_cpu(hdr.discarded_bytes)
 381                     || be32_to_cpu(hdr.discarded_printf))
 382                         brcmf_dbg(ERROR,
 383                                   "WLC_E_TRACE: [Discarded traces in dongle -->"
 384                                   " discarded_bytes %d discarded_printf %d]\n",
 385                                   be32_to_cpu(hdr.discarded_bytes),
 386                                   be32_to_cpu(hdr.discarded_printf));
 387
 388                 nblost = be32_to_cpu(hdr.seqnum) - seqnum_prev - 1;
 389                 if (nblost > 0)
 390                         brcmf_dbg(ERROR, "WLC_E_TRACE: [Event lost --> seqnum "
 391                                   " %d nblost %d\n", be32_to_cpu(hdr.seqnum),
 392                                   nblost);
 393                 seqnum_prev = be32_to_cpu(hdr.seqnum);
 394
 395                 /* Display the trace buffer. Advance from \n to \n to
 396                  * avoid display big
 397                  * printf (issue with Linux printk )
 398                  */
 399                 p = (char *)&buf[sizeof(struct msgtrace_hdr)];
 400                 while ((s = strstr(p, "\n")) != NULL) {
 401                         *s = '\0';
 402                         printk(KERN_DEBUG"%s\n", p);
 403                         p = s + 1;
 404                 }
 405                 printk(KERN_DEBUG "%s\n", p);
 406
 407                 /* Reset datalen to avoid display below */
 408                 datalen = 0;
 409                 break;
 410
 411         case BRCMF_E_RSSI:
 412                 brcmf_dbg(EVENT, "MACEVENT: %s %d\n",
 413                           event_name, be32_to_cpu(*((__be32 *)event_data)));
 414                 break;
 415
 416         default:
 417                 brcmf_dbg(EVENT,
 418                           "MACEVENT: %s %d, MAC %s, status %d, reason %d, "
 419                           "auth %d\n", event_name, event_type, eabuf,
 420                           (int)status, (int)reason, (int)auth_type);
 421                 break;
 422         }
 423
 424         /* show any appended data */
 425         if (datalen) {
 426                 buf = (unsigned char *) event_data;
 427                 brcmf_dbg(EVENT, " data (%d) : ", datalen);
 428                 for (i = 0; i < datalen; i++)
 429                         brcmf_dbg(EVENT, " 0x%02x ", *buf++);
 430                 brcmf_dbg(EVENT, "\n");
 431         }
 432 }
 433 #endif                          /* BCMDBG */
 434
 435 int
 436 brcmf_c_host_event(struct brcmf_pub *drvr, int *ifidx, void *pktdata,
 437                    struct brcmf_event_msg *event, void **data_ptr)
 438 {
 439         /* check whether packet is a BRCM event pkt */
 440         struct brcmf_event *pvt_data = (struct brcmf_event *) pktdata;
 441         struct brcmf_if_event *ifevent;
 442         char *event_data;
 443         u32 type, status;
 444         u16 flags;
 445         int evlen;
 446
 447         if (memcmp(BRCM_OUI, &pvt_data->hdr.oui[0], DOT11_OUI_LEN)) {
 448                 brcmf_dbg(ERROR, "mismatched OUI, bailing\n");
 449                 return -EBADE;
 450         }
 451
 452         /* BRCM event pkt may be unaligned - use xxx_ua to load user_subtype. */
 453         if (get_unaligned_be16(&pvt_data->hdr.usr_subtype) !=
 454             BCMILCP_BCM_SUBTYPE_EVENT) {
 455                 brcmf_dbg(ERROR, "mismatched subtype, bailing\n");
 456                 return -EBADE;
 457         }
 458
 459         *data_ptr = &pvt_data[1];
 460         event_data = *data_ptr;
 461
 462         /* memcpy since BRCM event pkt may be unaligned. */
 463         memcpy(event, &pvt_data->msg, sizeof(struct brcmf_event_msg));
 464
 465         type = get_unaligned_be32(&event->event_type);
 466         flags = get_unaligned_be16(&event->flags);
 467         status = get_unaligned_be32(&event->status);
 468         evlen = get_unaligned_be32(&event->datalen) +
 469                 sizeof(struct brcmf_event);
 470
 471         switch (type) {
 472         case BRCMF_E_IF:
 473                 ifevent = (struct brcmf_if_event *) event_data;
 474                 brcmf_dbg(TRACE, "if event\n");
 475
 476                 if (ifevent->ifidx > 0 && ifevent->ifidx < BRCMF_MAX_IFS) {
 477                         if (ifevent->action == BRCMF_E_IF_ADD)
 478                                 brcmf_add_if(drvr->dev, ifevent->ifidx,
 479                                              event->ifname,
 480                                              pvt_data->eth.h_dest);
 481                         else
 482                                 brcmf_del_if(drvr, ifevent->ifidx);
 483                 } else {
 484                         brcmf_dbg(ERROR, "Invalid ifidx %d for %s\n",
 485                                   ifevent->ifidx, event->ifname);
 486                 }
 487
 488                 /* send up the if event: btamp user needs it */
 489                 *ifidx = brcmf_ifname2idx(drvr, event->ifname);
 490                 break;
 491
 492                 /* These are what external supplicant/authenticator wants */
 493         case BRCMF_E_LINK:
 494         case BRCMF_E_ASSOC_IND:
 495         case BRCMF_E_REASSOC_IND:
 496         case BRCMF_E_DISASSOC_IND:
 497         case BRCMF_E_MIC_ERROR:
 498         default:
 499                 /* Fall through: this should get _everything_  */
 500
 501                 *ifidx = brcmf_ifname2idx(drvr, event->ifname);
 502                 brcmf_dbg(TRACE, "MAC event %d, flags %x, status %x\n",
 503                           type, flags, status);
 504
 505                 /* put it back to BRCMF_E_NDIS_LINK */
 506                 if (type == BRCMF_E_NDIS_LINK) {
 507                         u32 temp1;
 508                         __be32 temp2;
 509
 510                         temp1 = get_unaligned_be32(&event->event_type);
 511                         brcmf_dbg(TRACE, "Converted to WLC_E_LINK type %d\n",
 512                                   temp1);
 513
 514                         temp2 = cpu_to_be32(BRCMF_E_NDIS_LINK);
 515                         memcpy((void *)(&pvt_data->msg.event_type), &temp2,
 516                                sizeof(pvt_data->msg.event_type));
 517                 }
 518                 break;
 519         }
 520
 521 #ifdef BCMDBG
 522         brcmf_c_show_host_event(event, event_data);
 523 #endif                          /* BCMDBG */
 524
 525         return 0;
 526 }
 527
 528 /* Convert user's input in hex pattern to byte-size mask */
 529 static int brcmf_c_pattern_atoh(char *src, char *dst)
 530 {
 531         int i;
 532         if (strncmp(src, "0x", 2) != 0 && strncmp(src, "0X", 2) != 0) {
 533                 brcmf_dbg(ERROR, "Mask invalid format. Needs to start with 0x\n");
 534                 return -EINVAL;
 535         }
 536         src = src + 2;          /* Skip past 0x */
 537         if (strlen(src) % 2 != 0) {
 538                 brcmf_dbg(ERROR, "Mask invalid format. Length must be even.\n");
 539                 return -EINVAL;
 540         }
 541         for (i = 0; *src != '\0'; i++) {
 542                 unsigned long res;
 543                 char num[3];
 544                 strncpy(num, src, 2);
 545                 num[2] = '\0';
 546                 if (kstrtoul(num, 16, &res))
 547                         return -EINVAL;
 548                 dst[i] = (u8)res;
 549                 src += 2;
 550         }
 551         return i;
 552 }
 553
 554 void
 555 brcmf_c_pktfilter_offload_enable(struct brcmf_pub *drvr, char *arg, int enable,
 556                              int master_mode)
 557 {
 558         unsigned long res;
 559         char *argv[8];
 560         int i = 0;
 561         const char *str;
 562         int buf_len;
 563         int str_len;
 564         char *arg_save = NULL, *arg_org = NULL;
 565         int rc;
 566         char buf[128];
 567         struct brcmf_pkt_filter_enable_le enable_parm;
 568         struct brcmf_pkt_filter_enable_le *pkt_filterp;
 569         __le32 mmode_le;
 570
 571         arg_save = kmalloc(strlen(arg) + 1, GFP_ATOMIC);
 572         if (!arg_save)
 573                 goto fail;
 574
 575         arg_org = arg_save;
 576         memcpy(arg_save, arg, strlen(arg) + 1);
 577
 578         argv[i] = strsep(&arg_save, " ");
 579
 580         i = 0;
 581         if (NULL == argv[i]) {
 582                 brcmf_dbg(ERROR, "No args provided\n");
 583                 goto fail;
 584         }
 585
 586         str = "pkt_filter_enable";
 587         str_len = strlen(str);
 588         strncpy(buf, str, str_len);
 589         buf[str_len] = '\0';
 590         buf_len = str_len + 1;
 591
 592         pkt_filterp = (struct brcmf_pkt_filter_enable_le *) (buf + str_len + 1);
 593
 594         /* Parse packet filter id. */
 595         enable_parm.id = 0;
 596         if (!kstrtoul(argv[i], 0, &res))
 597                 enable_parm.id = cpu_to_le32((u32)res);
 598
 599         /* Parse enable/disable value. */
 600         enable_parm.enable = cpu_to_le32(enable);
 601
 602         buf_len += sizeof(enable_parm);
 603         memcpy((char *)pkt_filterp, &enable_parm, sizeof(enable_parm));
 604
 605         /* Enable/disable the specified filter. */
 606         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
 607         rc = rc >= 0 ? 0 : rc;
 608         if (rc)
 609                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 610                           arg, rc);
 611         else
 612                 brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);
 613
 614         /* Contorl the master mode */
 615         mmode_le = cpu_to_le32(master_mode);
 616         brcmf_c_mkiovar("pkt_filter_mode", (char *)&mmode_le, 4, buf,
 617                     sizeof(buf));
 618         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf,
 619                                        sizeof(buf));
 620         rc = rc >= 0 ? 0 : rc;
 621         if (rc)
 622                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 623                           arg, rc);
 624
 625 fail:
 626         kfree(arg_org);
 627 }
 628
 629 void brcmf_c_pktfilter_offload_set(struct brcmf_pub *drvr, char *arg)
 630 {
 631         const char *str;
 632         struct brcmf_pkt_filter_le pkt_filter;
 633         struct brcmf_pkt_filter_le *pkt_filterp;
 634         unsigned long res;
 635         int buf_len;
 636         int str_len;
 637         int rc;
 638         u32 mask_size;
 639         u32 pattern_size;
 640         char *argv[8], *buf = NULL;
 641         int i = 0;
 642         char *arg_save = NULL, *arg_org = NULL;
 643
 644         arg_save = kstrdup(arg, GFP_ATOMIC);
 645         if (!arg_save)
 646                 goto fail;
 647
 648         arg_org = arg_save;
 649
 650         buf = kmalloc(PKTFILTER_BUF_SIZE, GFP_ATOMIC);
 651         if (!buf)
 652                 goto fail;
 653
 654         argv[i] = strsep(&arg_save, " ");
 655         while (argv[i++])
 656                 argv[i] = strsep(&arg_save, " ");
 657
 658         i = 0;
 659         if (NULL == argv[i]) {
 660                 brcmf_dbg(ERROR, "No args provided\n");
 661                 goto fail;
 662         }
 663
 664         str = "pkt_filter_add";
 665         strcpy(buf, str);
 666         str_len = strlen(str);
 667         buf_len = str_len + 1;
 668
 669         pkt_filterp = (struct brcmf_pkt_filter_le *) (buf + str_len + 1);
 670
 671         /* Parse packet filter id. */
 672         pkt_filter.id = 0;
 673         if (!kstrtoul(argv[i], 0, &res))
 674                 pkt_filter.id = cpu_to_le32((u32)res);
 675
 676         if (NULL == argv[++i]) {
 677                 brcmf_dbg(ERROR, "Polarity not provided\n");
 678                 goto fail;
 679         }
 680
 681         /* Parse filter polarity. */
 682         pkt_filter.negate_match = 0;
 683         if (!kstrtoul(argv[i], 0, &res))
 684                 pkt_filter.negate_match = cpu_to_le32((u32)res);
 685
 686         if (NULL == argv[++i]) {
 687                 brcmf_dbg(ERROR, "Filter type not provided\n");
 688                 goto fail;
 689         }
 690
 691         /* Parse filter type. */
 692         pkt_filter.type = 0;
 693         if (!kstrtoul(argv[i], 0, &res))
 694                 pkt_filter.type = cpu_to_le32((u32)res);
 695
 696         if (NULL == argv[++i]) {
 697                 brcmf_dbg(ERROR, "Offset not provided\n");
 698                 goto fail;
 699         }
 700
 701         /* Parse pattern filter offset. */
 702         pkt_filter.u.pattern.offset = 0;
 703         if (!kstrtoul(argv[i], 0, &res))
 704                 pkt_filter.u.pattern.offset = cpu_to_le32((u32)res);
 705
 706         if (NULL == argv[++i]) {
 707                 brcmf_dbg(ERROR, "Bitmask not provided\n");
 708                 goto fail;
 709         }
 710
 711         /* Parse pattern filter mask. */
 712         mask_size =
 713             brcmf_c_pattern_atoh
 714                    (argv[i], (char *)pkt_filterp->u.pattern.mask_and_pattern);
 715
 716         if (NULL == argv[++i]) {
 717                 brcmf_dbg(ERROR, "Pattern not provided\n");
 718                 goto fail;
 719         }
 720
 721         /* Parse pattern filter pattern. */
 722         pattern_size =
 723             brcmf_c_pattern_atoh(argv[i],
 724                                    (char *)&pkt_filterp->u.pattern.
 725                                    mask_and_pattern[mask_size]);
 726
 727         if (mask_size != pattern_size) {
 728                 brcmf_dbg(ERROR, "Mask and pattern not the same size\n");
 729                 goto fail;
 730         }
 731
 732         pkt_filter.u.pattern.size_bytes = cpu_to_le32(mask_size);
 733         buf_len += BRCMF_PKT_FILTER_FIXED_LEN;
 734         buf_len += (BRCMF_PKT_FILTER_PATTERN_FIXED_LEN + 2 * mask_size);
 735
 736         /* Keep-alive attributes are set in local
 737          * variable (keep_alive_pkt), and
 738          ** then memcpy'ed into buffer (keep_alive_pktp) since there is no
 739          ** guarantee that the buffer is properly aligned.
 740          */
 741         memcpy((char *)pkt_filterp,
 742                &pkt_filter,
 743                BRCMF_PKT_FILTER_FIXED_LEN + BRCMF_PKT_FILTER_PATTERN_FIXED_LEN);
 744
 745         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
 746         rc = rc >= 0 ? 0 : rc;
 747
 748         if (rc)
 749                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 750                           arg, rc);
 751         else
 752                 brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);
 753
 754 fail:
 755         kfree(arg_org);
 756
 757         kfree(buf);
 758 }
 759
 760 static void brcmf_c_arp_offload_set(struct brcmf_pub *drvr, int arp_mode)
 761 {
 762         char iovbuf[32];
 763         int retcode;
 764
 765         brcmf_c_mkiovar("arp_ol", (char *)&arp_mode, 4, iovbuf, sizeof(iovbuf));
 766         retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 767                                    iovbuf, sizeof(iovbuf));
 768         retcode = retcode >= 0 ? 0 : retcode;
 769         if (retcode)
 770                 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, retcode = %d\n",
 771                           arp_mode, retcode);
 772         else
 773                 brcmf_dbg(TRACE, "successfully set ARP offload mode to 0x%x\n",
 774                           arp_mode);
 775 }
 776
 777 static void brcmf_c_arp_offload_enable(struct brcmf_pub *drvr, int arp_enable)
 778 {
 779         char iovbuf[32];
 780         int retcode;
 781
 782         brcmf_c_mkiovar("arpoe", (char *)&arp_enable, 4,
 783                         iovbuf, sizeof(iovbuf));
 784         retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 785                                    iovbuf, sizeof(iovbuf));
 786         retcode = retcode >= 0 ? 0 : retcode;
 787         if (retcode)
 788                 brcmf_dbg(TRACE, "failed to enable ARP offload to %d, retcode = %d\n",
 789                           arp_enable, retcode);
 790         else
 791                 brcmf_dbg(TRACE, "successfully enabled ARP offload to %d\n",
 792                           arp_enable);
 793 }
 794
 795 int brcmf_c_preinit_dcmds(struct brcmf_pub *drvr)
 796 {
 797         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];      /*  Room for
 798                                  "event_msgs" + '\0' + bitvec  */
 799         uint up = 0;
 800         char buf[128], *ptr;
 801         u32 dongle_align = drvr->bus_if->align;
 802         u32 glom = 0;
 803         u32 roaming = 1;
 804         uint bcn_timeout = 3;
 805         int scan_assoc_time = 40;
 806         int scan_unassoc_time = 40;
 807         int i;
 808
 809         mutex_lock(&drvr->proto_block);
 810
 811         /* Set Country code */
 812         if (drvr->country_code[0] != 0) {
 813                 if (brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_COUNTRY,
 814                                               drvr->country_code,
 815                                               sizeof(drvr->country_code)) < 0)
 816                         brcmf_dbg(ERROR, "country code setting failed\n");
 817         }
 818
 819         /* query for 'ver' to get version info from firmware */
 820         memset(buf, 0, sizeof(buf));
 821         ptr = buf;
 822         brcmf_c_mkiovar("ver", NULL, 0, buf, sizeof(buf));
 823         brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, buf, sizeof(buf));
 824         strsep(&ptr, "\n");
 825         /* Print fw version info */
 826         brcmf_dbg(ERROR, "Firmware version = %s\n", buf);
 827
 828         /* Match Host and Dongle rx alignment */
 829         brcmf_c_mkiovar("bus:txglomalign", (char *)&dongle_align, 4, iovbuf,
 830                     sizeof(iovbuf));
 831         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 832                                   sizeof(iovbuf));
 833
 834         /* disable glom option per default */
 835         brcmf_c_mkiovar("bus:txglom", (char *)&glom, 4, iovbuf, sizeof(iovbuf));
 836         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 837                                   sizeof(iovbuf));
 838
 839         /* Setup timeout if Beacons are lost and roam is off to report
 840                  link down */
 841         brcmf_c_mkiovar("bcn_timeout", (char *)&bcn_timeout, 4, iovbuf,
 842                     sizeof(iovbuf));
 843         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 844                                   sizeof(iovbuf));
 845
 846         /* Enable/Disable build-in roaming to allowed ext supplicant to take
 847                  of romaing */
 848         brcmf_c_mkiovar("roam_off", (char *)&roaming, 4,
 849                       iovbuf, sizeof(iovbuf));
 850         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 851                                   sizeof(iovbuf));
 852
 853         /* Force STA UP */
 854         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_UP, (char *)&up, sizeof(up));
 855
 856         /* Setup event_msgs */
 857         brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
 858                       iovbuf, sizeof(iovbuf));
 859         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 860                                   sizeof(iovbuf));
 861
 862         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_CHANNEL_TIME,
 863                          (char *)&scan_assoc_time, sizeof(scan_assoc_time));
 864         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_UNASSOC_TIME,
 865                          (char *)&scan_unassoc_time, sizeof(scan_unassoc_time));
 866
 867         /* Set and enable ARP offload feature */
 868         brcmf_c_arp_offload_set(drvr, BRCMF_ARPOL_MODE);
 869         brcmf_c_arp_offload_enable(drvr, true);
 870
 871         /* Set up pkt filter */
 872         for (i = 0; i < drvr->pktfilter_count; i++) {
 873                 brcmf_c_pktfilter_offload_set(drvr, drvr->pktfilter[i]);
 874                 brcmf_c_pktfilter_offload_enable(drvr, drvr->pktfilter[i],
 875                                                  0, true);
 876         }
 877
 878         mutex_unlock(&drvr->proto_block);
 879
 880         return 0;
 881 }