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