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 int brcmf_msg_level;
  36
  37 #define MSGTRACE_VERSION        1
  38
  39 #define BRCMF_PKT_FILTER_FIXED_LEN      offsetof(struct brcmf_pkt_filter_le, u)
  40 #define BRCMF_PKT_FILTER_PATTERN_FIXED_LEN      \
  41         offsetof(struct brcmf_pkt_filter_pattern_le, mask_and_pattern)
  42
  43 #ifdef BCMDBG
  44 static const char brcmf_version[] =
  45         "Dongle Host Driver, version " BRCMF_VERSION_STR "\nCompiled on "
  46         __DATE__ " at " __TIME__;
  47 #else
  48 static const char brcmf_version[] =
  49         "Dongle Host Driver, version " BRCMF_VERSION_STR;
  50 #endif
  51
  52 /* Message trace header */
  53 struct msgtrace_hdr {
  54         u8 version;
  55         u8 spare;
  56         __be16 len;             /* Len of the trace */
  57         __be32 seqnum;          /* Sequence number of message. Useful
  58                                  * if the messsage has been lost
  59                                  * because of DMA error or a bus reset
  60                                  * (ex: SDIO Func2)
  61                                  */
  62         __be32 discarded_bytes; /* Number of discarded bytes because of
  63                                  trace overflow  */
  64         __be32 discarded_printf;        /* Number of discarded printf
  65                                  because of trace overflow */
  66 } __packed;
  67
  68
  69 uint
  70 brcmf_c_mkiovar(char *name, char *data, uint datalen, char *buf, uint buflen)
  71 {
  72         uint len;
  73
  74         len = strlen(name) + 1;
  75
  76         if ((len + datalen) > buflen)
  77                 return 0;
  78
  79         strncpy(buf, name, buflen);
  80
  81         /* append data onto the end of the name string */
  82         memcpy(&buf[len], data, datalen);
  83         len += datalen;
  84
  85         return len;
  86 }
  87
  88 void brcmf_c_init(void)
  89 {
  90         /* Init global variables at run-time, not as part of the declaration.
  91          * This is required to support init/de-init of the driver.
  92          * Initialization
  93          * of globals as part of the declaration results in non-deterministic
  94          * behaviour since the value of the globals may be different on the
  95          * first time that the driver is initialized vs subsequent
  96          * initializations.
  97          */
  98         brcmf_msg_level = BRCMF_ERROR_VAL;
  99 }
 100
 101 bool brcmf_c_prec_enq(struct brcmf_pub *drvr, struct pktq *q,
 102                       struct sk_buff *pkt, int prec)
 103 {
 104         struct sk_buff *p;
 105         int eprec = -1;         /* precedence to evict from */
 106         bool discard_oldest;
 107
 108         /* Fast case, precedence queue is not full and we are also not
 109          * exceeding total queue length
 110          */
 111         if (!pktq_pfull(q, prec) && !pktq_full(q)) {
 112                 brcmu_pktq_penq(q, prec, pkt);
 113                 return true;
 114         }
 115
 116         /* Determine precedence from which to evict packet, if any */
 117         if (pktq_pfull(q, prec))
 118                 eprec = prec;
 119         else if (pktq_full(q)) {
 120                 p = brcmu_pktq_peek_tail(q, &eprec);
 121                 if (eprec > prec)
 122                         return false;
 123         }
 124
 125         /* Evict if needed */
 126         if (eprec >= 0) {
 127                 /* Detect queueing to unconfigured precedence */
 128                 discard_oldest = ac_bitmap_tst(drvr->wme_dp, eprec);
 129                 if (eprec == prec && !discard_oldest)
 130                         return false;   /* refuse newer (incoming) packet */
 131                 /* Evict packet according to discard policy */
 132                 p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) :
 133                         brcmu_pktq_pdeq_tail(q, eprec);
 134                 if (p == NULL)
 135                         brcmf_dbg(ERROR, "brcmu_pktq_penq() failed, oldest %d\n",
 136                                   discard_oldest);
 137
 138                 brcmu_pkt_buf_free_skb(p);
 139         }
 140
 141         /* Enqueue */
 142         p = brcmu_pktq_penq(q, prec, pkt);
 143         if (p == NULL)
 144                 brcmf_dbg(ERROR, "brcmu_pktq_penq() failed\n");
 145
 146         return p != NULL;
 147 }
 148
 149 #ifdef BCMDBG
 150 static void
 151 brcmf_c_show_host_event(struct brcmf_event_msg *event, void *event_data)
 152 {
 153         uint i, status, reason;
 154         bool group = false, flush_txq = false, link = false;
 155         char *auth_str, *event_name;
 156         unsigned char *buf;
 157         char err_msg[256], eabuf[ETHER_ADDR_STR_LEN];
 158         static struct {
 159                 uint event;
 160                 char *event_name;
 161         } event_names[] = {
 162                 {
 163                 BRCMF_E_SET_SSID, "SET_SSID"}, {
 164                 BRCMF_E_JOIN, "JOIN"}, {
 165                 BRCMF_E_START, "START"}, {
 166                 BRCMF_E_AUTH, "AUTH"}, {
 167                 BRCMF_E_AUTH_IND, "AUTH_IND"}, {
 168                 BRCMF_E_DEAUTH, "DEAUTH"}, {
 169                 BRCMF_E_DEAUTH_IND, "DEAUTH_IND"}, {
 170                 BRCMF_E_ASSOC, "ASSOC"}, {
 171                 BRCMF_E_ASSOC_IND, "ASSOC_IND"}, {
 172                 BRCMF_E_REASSOC, "REASSOC"}, {
 173                 BRCMF_E_REASSOC_IND, "REASSOC_IND"}, {
 174                 BRCMF_E_DISASSOC, "DISASSOC"}, {
 175                 BRCMF_E_DISASSOC_IND, "DISASSOC_IND"}, {
 176                 BRCMF_E_QUIET_START, "START_QUIET"}, {
 177                 BRCMF_E_QUIET_END, "END_QUIET"}, {
 178                 BRCMF_E_BEACON_RX, "BEACON_RX"}, {
 179                 BRCMF_E_LINK, "LINK"}, {
 180                 BRCMF_E_MIC_ERROR, "MIC_ERROR"}, {
 181                 BRCMF_E_NDIS_LINK, "NDIS_LINK"}, {
 182                 BRCMF_E_ROAM, "ROAM"}, {
 183                 BRCMF_E_TXFAIL, "TXFAIL"}, {
 184                 BRCMF_E_PMKID_CACHE, "PMKID_CACHE"}, {
 185                 BRCMF_E_RETROGRADE_TSF, "RETROGRADE_TSF"}, {
 186                 BRCMF_E_PRUNE, "PRUNE"}, {
 187                 BRCMF_E_AUTOAUTH, "AUTOAUTH"}, {
 188                 BRCMF_E_EAPOL_MSG, "EAPOL_MSG"}, {
 189                 BRCMF_E_SCAN_COMPLETE, "SCAN_COMPLETE"}, {
 190                 BRCMF_E_ADDTS_IND, "ADDTS_IND"}, {
 191                 BRCMF_E_DELTS_IND, "DELTS_IND"}, {
 192                 BRCMF_E_BCNSENT_IND, "BCNSENT_IND"}, {
 193                 BRCMF_E_BCNRX_MSG, "BCNRX_MSG"}, {
 194                 BRCMF_E_BCNLOST_MSG, "BCNLOST_MSG"}, {
 195                 BRCMF_E_ROAM_PREP, "ROAM_PREP"}, {
 196                 BRCMF_E_PFN_NET_FOUND, "PNO_NET_FOUND"}, {
 197                 BRCMF_E_PFN_NET_LOST, "PNO_NET_LOST"}, {
 198                 BRCMF_E_RESET_COMPLETE, "RESET_COMPLETE"}, {
 199                 BRCMF_E_JOIN_START, "JOIN_START"}, {
 200                 BRCMF_E_ROAM_START, "ROAM_START"}, {
 201                 BRCMF_E_ASSOC_START, "ASSOC_START"}, {
 202                 BRCMF_E_IBSS_ASSOC, "IBSS_ASSOC"}, {
 203                 BRCMF_E_RADIO, "RADIO"}, {
 204                 BRCMF_E_PSM_WATCHDOG, "PSM_WATCHDOG"}, {
 205                 BRCMF_E_PROBREQ_MSG, "PROBREQ_MSG"}, {
 206                 BRCMF_E_SCAN_CONFIRM_IND, "SCAN_CONFIRM_IND"}, {
 207                 BRCMF_E_PSK_SUP, "PSK_SUP"}, {
 208                 BRCMF_E_COUNTRY_CODE_CHANGED, "COUNTRY_CODE_CHANGED"}, {
 209                 BRCMF_E_EXCEEDED_MEDIUM_TIME, "EXCEEDED_MEDIUM_TIME"}, {
 210                 BRCMF_E_ICV_ERROR, "ICV_ERROR"}, {
 211                 BRCMF_E_UNICAST_DECODE_ERROR, "UNICAST_DECODE_ERROR"}, {
 212                 BRCMF_E_MULTICAST_DECODE_ERROR, "MULTICAST_DECODE_ERROR"}, {
 213                 BRCMF_E_TRACE, "TRACE"}, {
 214                 BRCMF_E_ACTION_FRAME, "ACTION FRAME"}, {
 215                 BRCMF_E_ACTION_FRAME_COMPLETE, "ACTION FRAME TX COMPLETE"}, {
 216                 BRCMF_E_IF, "IF"}, {
 217                 BRCMF_E_RSSI, "RSSI"}, {
 218                 BRCMF_E_PFN_SCAN_COMPLETE, "SCAN_COMPLETE"}
 219         };
 220         uint event_type, flags, auth_type, datalen;
 221         static u32 seqnum_prev;
 222         struct msgtrace_hdr hdr;
 223         u32 nblost;
 224         char *s, *p;
 225
 226         event_type = be32_to_cpu(event->event_type);
 227         flags = be16_to_cpu(event->flags);
 228         status = be32_to_cpu(event->status);
 229         reason = be32_to_cpu(event->reason);
 230         auth_type = be32_to_cpu(event->auth_type);
 231         datalen = be32_to_cpu(event->datalen);
 232         /* debug dump of event messages */
 233         sprintf(eabuf, "%pM", event->addr);
 234
 235         event_name = "UNKNOWN";
 236         for (i = 0; i < ARRAY_SIZE(event_names); i++) {
 237                 if (event_names[i].event == event_type)
 238                         event_name = event_names[i].event_name;
 239         }
 240
 241         brcmf_dbg(EVENT, "EVENT: %s, event ID = %d\n", event_name, event_type);
 242         brcmf_dbg(EVENT, "flags 0x%04x, status %d, reason %d, auth_type %d MAC %s\n",
 243                   flags, status, reason, auth_type, eabuf);
 244
 245         if (flags & BRCMF_EVENT_MSG_LINK)
 246                 link = true;
 247         if (flags & BRCMF_EVENT_MSG_GROUP)
 248                 group = true;
 249         if (flags & BRCMF_EVENT_MSG_FLUSHTXQ)
 250                 flush_txq = true;
 251
 252         switch (event_type) {
 253         case BRCMF_E_START:
 254         case BRCMF_E_DEAUTH:
 255         case BRCMF_E_DISASSOC:
 256                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 257                 break;
 258
 259         case BRCMF_E_ASSOC_IND:
 260         case BRCMF_E_REASSOC_IND:
 261                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 262                 break;
 263
 264         case BRCMF_E_ASSOC:
 265         case BRCMF_E_REASSOC:
 266                 if (status == BRCMF_E_STATUS_SUCCESS)
 267                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, SUCCESS\n",
 268                                   event_name, eabuf);
 269                 else if (status == BRCMF_E_STATUS_TIMEOUT)
 270                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, TIMEOUT\n",
 271                                   event_name, eabuf);
 272                 else if (status == BRCMF_E_STATUS_FAIL)
 273                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, FAILURE, reason %d\n",
 274                                   event_name, eabuf, (int)reason);
 275                 else
 276                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, unexpected status %d\n",
 277                                   event_name, eabuf, (int)status);
 278                 break;
 279
 280         case BRCMF_E_DEAUTH_IND:
 281         case BRCMF_E_DISASSOC_IND:
 282                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, reason %d\n",
 283                           event_name, eabuf, (int)reason);
 284                 break;
 285
 286         case BRCMF_E_AUTH:
 287         case BRCMF_E_AUTH_IND:
 288                 if (auth_type == WLAN_AUTH_OPEN)
 289                         auth_str = "Open System";
 290                 else if (auth_type == WLAN_AUTH_SHARED_KEY)
 291                         auth_str = "Shared Key";
 292                 else {
 293                         sprintf(err_msg, "AUTH unknown: %d", (int)auth_type);
 294                         auth_str = err_msg;
 295                 }
 296                 if (event_type == BRCMF_E_AUTH_IND)
 297                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s\n",
 298                                   event_name, eabuf, auth_str);
 299                 else if (status == BRCMF_E_STATUS_SUCCESS)
 300                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, SUCCESS\n",
 301                                   event_name, eabuf, auth_str);
 302                 else if (status == BRCMF_E_STATUS_TIMEOUT)
 303                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, TIMEOUT\n",
 304                                   event_name, eabuf, auth_str);
 305                 else if (status == BRCMF_E_STATUS_FAIL) {
 306                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, FAILURE, reason %d\n",
 307                                   event_name, eabuf, auth_str, (int)reason);
 308                 }
 309
 310                 break;
 311
 312         case BRCMF_E_JOIN:
 313         case BRCMF_E_ROAM:
 314         case BRCMF_E_SET_SSID:
 315                 if (status == BRCMF_E_STATUS_SUCCESS)
 316                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n",
 317                                   event_name, eabuf);
 318                 else if (status == BRCMF_E_STATUS_FAIL)
 319                         brcmf_dbg(EVENT, "MACEVENT: %s, failed\n", event_name);
 320                 else if (status == BRCMF_E_STATUS_NO_NETWORKS)
 321                         brcmf_dbg(EVENT, "MACEVENT: %s, no networks found\n",
 322                                   event_name);
 323                 else
 324                         brcmf_dbg(EVENT, "MACEVENT: %s, unexpected status %d\n",
 325                                   event_name, (int)status);
 326                 break;
 327
 328         case BRCMF_E_BEACON_RX:
 329                 if (status == BRCMF_E_STATUS_SUCCESS)
 330                         brcmf_dbg(EVENT, "MACEVENT: %s, SUCCESS\n", event_name);
 331                 else if (status == BRCMF_E_STATUS_FAIL)
 332                         brcmf_dbg(EVENT, "MACEVENT: %s, FAIL\n", event_name);
 333                 else
 334                         brcmf_dbg(EVENT, "MACEVENT: %s, status %d\n",
 335                                   event_name, status);
 336                 break;
 337
 338         case BRCMF_E_LINK:
 339                 brcmf_dbg(EVENT, "MACEVENT: %s %s\n",
 340                           event_name, link ? "UP" : "DOWN");
 341                 break;
 342
 343         case BRCMF_E_MIC_ERROR:
 344                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, Group %d, Flush %d\n",
 345                           event_name, eabuf, group, flush_txq);
 346                 break;
 347
 348         case BRCMF_E_ICV_ERROR:
 349         case BRCMF_E_UNICAST_DECODE_ERROR:
 350         case BRCMF_E_MULTICAST_DECODE_ERROR:
 351                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 352                 break;
 353
 354         case BRCMF_E_TXFAIL:
 355                 brcmf_dbg(EVENT, "MACEVENT: %s, RA %s\n", event_name, eabuf);
 356                 break;
 357
 358         case BRCMF_E_SCAN_COMPLETE:
 359         case BRCMF_E_PMKID_CACHE:
 360                 brcmf_dbg(EVENT, "MACEVENT: %s\n", event_name);
 361                 break;
 362
 363         case BRCMF_E_PFN_NET_FOUND:
 364         case BRCMF_E_PFN_NET_LOST:
 365         case BRCMF_E_PFN_SCAN_COMPLETE:
 366                 brcmf_dbg(EVENT, "PNOEVENT: %s\n", event_name);
 367                 break;
 368
 369         case BRCMF_E_PSK_SUP:
 370         case BRCMF_E_PRUNE:
 371                 brcmf_dbg(EVENT, "MACEVENT: %s, status %d, reason %d\n",
 372                           event_name, (int)status, (int)reason);
 373                 break;
 374
 375         case BRCMF_E_TRACE:
 376                 buf = (unsigned char *) event_data;
 377                 memcpy(&hdr, buf, sizeof(struct msgtrace_hdr));
 378
 379                 if (hdr.version != MSGTRACE_VERSION) {
 380                         brcmf_dbg(ERROR,
 381                                   "MACEVENT: %s [unsupported version --> brcmf"
 382                                   " version:%d dongle version:%d]\n",
 383                                   event_name, MSGTRACE_VERSION, hdr.version);
 384                         /* Reset datalen to avoid display below */
 385                         datalen = 0;
 386                         break;
 387                 }
 388
 389                 /* There are 2 bytes available at the end of data */
 390                 *(buf + sizeof(struct msgtrace_hdr)
 391                          + be16_to_cpu(hdr.len)) = '\0';
 392
 393                 if (be32_to_cpu(hdr.discarded_bytes)
 394                     || be32_to_cpu(hdr.discarded_printf))
 395                         brcmf_dbg(ERROR,
 396                                   "WLC_E_TRACE: [Discarded traces in dongle -->"
 397                                   " discarded_bytes %d discarded_printf %d]\n",
 398                                   be32_to_cpu(hdr.discarded_bytes),
 399                                   be32_to_cpu(hdr.discarded_printf));
 400
 401                 nblost = be32_to_cpu(hdr.seqnum) - seqnum_prev - 1;
 402                 if (nblost > 0)
 403                         brcmf_dbg(ERROR, "WLC_E_TRACE: [Event lost --> seqnum "
 404                                   " %d nblost %d\n", be32_to_cpu(hdr.seqnum),
 405                                   nblost);
 406                 seqnum_prev = be32_to_cpu(hdr.seqnum);
 407
 408                 /* Display the trace buffer. Advance from \n to \n to
 409                  * avoid display big
 410                  * printf (issue with Linux printk )
 411                  */
 412                 p = (char *)&buf[sizeof(struct msgtrace_hdr)];
 413                 while ((s = strstr(p, "\n")) != NULL) {
 414                         *s = '\0';
 415                         printk(KERN_DEBUG"%s\n", p);
 416                         p = s + 1;
 417                 }
 418                 printk(KERN_DEBUG "%s\n", p);
 419
 420                 /* Reset datalen to avoid display below */
 421                 datalen = 0;
 422                 break;
 423
 424         case BRCMF_E_RSSI:
 425                 brcmf_dbg(EVENT, "MACEVENT: %s %d\n",
 426                           event_name, be32_to_cpu(*((__be32 *)event_data)));
 427                 break;
 428
 429         default:
 430                 brcmf_dbg(EVENT,
 431                           "MACEVENT: %s %d, MAC %s, status %d, reason %d, "
 432                           "auth %d\n", event_name, event_type, eabuf,
 433                           (int)status, (int)reason, (int)auth_type);
 434                 break;
 435         }
 436
 437         /* show any appended data */
 438         if (datalen) {
 439                 buf = (unsigned char *) event_data;
 440                 brcmf_dbg(EVENT, " data (%d) : ", datalen);
 441                 for (i = 0; i < datalen; i++)
 442                         brcmf_dbg(EVENT, " 0x%02x ", *buf++);
 443                 brcmf_dbg(EVENT, "\n");
 444         }
 445 }
 446 #endif                          /* BCMDBG */
 447
 448 int
 449 brcmf_c_host_event(struct brcmf_info *drvr_priv, int *ifidx, void *pktdata,
 450                    struct brcmf_event_msg *event, void **data_ptr)
 451 {
 452         /* check whether packet is a BRCM event pkt */
 453         struct brcmf_event *pvt_data = (struct brcmf_event *) pktdata;
 454         struct brcmf_if_event *ifevent;
 455         char *event_data;
 456         u32 type, status;
 457         u16 flags;
 458         int evlen;
 459
 460         if (memcmp(BRCM_OUI, &pvt_data->hdr.oui[0], DOT11_OUI_LEN)) {
 461                 brcmf_dbg(ERROR, "mismatched OUI, bailing\n");
 462                 return -EBADE;
 463         }
 464
 465         /* BRCM event pkt may be unaligned - use xxx_ua to load user_subtype. */
 466         if (get_unaligned_be16(&pvt_data->hdr.usr_subtype) !=
 467             BCMILCP_BCM_SUBTYPE_EVENT) {
 468                 brcmf_dbg(ERROR, "mismatched subtype, bailing\n");
 469                 return -EBADE;
 470         }
 471
 472         *data_ptr = &pvt_data[1];
 473         event_data = *data_ptr;
 474
 475         /* memcpy since BRCM event pkt may be unaligned. */
 476         memcpy(event, &pvt_data->msg, sizeof(struct brcmf_event_msg));
 477
 478         type = get_unaligned_be32(&event->event_type);
 479         flags = get_unaligned_be16(&event->flags);
 480         status = get_unaligned_be32(&event->status);
 481         evlen = get_unaligned_be32(&event->datalen) +
 482                 sizeof(struct brcmf_event);
 483
 484         switch (type) {
 485         case BRCMF_E_IF:
 486                 ifevent = (struct brcmf_if_event *) event_data;
 487                 brcmf_dbg(TRACE, "if event\n");
 488
 489                 if (ifevent->ifidx > 0 && ifevent->ifidx < BRCMF_MAX_IFS) {
 490                         if (ifevent->action == BRCMF_E_IF_ADD)
 491                                 brcmf_add_if(drvr_priv, ifevent->ifidx, NULL,
 492                                              event->ifname,
 493                                              pvt_data->eth.h_dest,
 494                                              ifevent->flags, ifevent->bssidx);
 495                         else
 496                                 brcmf_del_if(drvr_priv, ifevent->ifidx);
 497                 } else {
 498                         brcmf_dbg(ERROR, "Invalid ifidx %d for %s\n",
 499                                   ifevent->ifidx, event->ifname);
 500                 }
 501
 502                 /* send up the if event: btamp user needs it */
 503                 *ifidx = brcmf_ifname2idx(drvr_priv, event->ifname);
 504                 break;
 505
 506                 /* These are what external supplicant/authenticator wants */
 507         case BRCMF_E_LINK:
 508         case BRCMF_E_ASSOC_IND:
 509         case BRCMF_E_REASSOC_IND:
 510         case BRCMF_E_DISASSOC_IND:
 511         case BRCMF_E_MIC_ERROR:
 512         default:
 513                 /* Fall through: this should get _everything_  */
 514
 515                 *ifidx = brcmf_ifname2idx(drvr_priv, event->ifname);
 516                 brcmf_dbg(TRACE, "MAC event %d, flags %x, status %x\n",
 517                           type, flags, status);
 518
 519                 /* put it back to BRCMF_E_NDIS_LINK */
 520                 if (type == BRCMF_E_NDIS_LINK) {
 521                         u32 temp1;
 522                         __be32 temp2;
 523
 524                         temp1 = get_unaligned_be32(&event->event_type);
 525                         brcmf_dbg(TRACE, "Converted to WLC_E_LINK type %d\n",
 526                                   temp1);
 527
 528                         temp2 = cpu_to_be32(BRCMF_E_NDIS_LINK);
 529                         memcpy((void *)(&pvt_data->msg.event_type), &temp2,
 530                                sizeof(pvt_data->msg.event_type));
 531                 }
 532                 break;
 533         }
 534
 535 #ifdef BCMDBG
 536         brcmf_c_show_host_event(event, event_data);
 537 #endif                          /* BCMDBG */
 538
 539         return 0;
 540 }
 541
 542 /* Convert user's input in hex pattern to byte-size mask */
 543 static int brcmf_c_pattern_atoh(char *src, char *dst)
 544 {
 545         int i;
 546         if (strncmp(src, "0x", 2) != 0 && strncmp(src, "0X", 2) != 0) {
 547                 brcmf_dbg(ERROR, "Mask invalid format. Needs to start with 0x\n");
 548                 return -EINVAL;
 549         }
 550         src = src + 2;          /* Skip past 0x */
 551         if (strlen(src) % 2 != 0) {
 552                 brcmf_dbg(ERROR, "Mask invalid format. Length must be even.\n");
 553                 return -EINVAL;
 554         }
 555         for (i = 0; *src != '\0'; i++) {
 556                 unsigned long res;
 557                 char num[3];
 558                 strncpy(num, src, 2);
 559                 num[2] = '\0';
 560                 if (kstrtoul(num, 16, &res))
 561                         return -EINVAL;
 562                 dst[i] = (u8)res;
 563                 src += 2;
 564         }
 565         return i;
 566 }
 567
 568 void
 569 brcmf_c_pktfilter_offload_enable(struct brcmf_pub *drvr, char *arg, int enable,
 570                              int master_mode)
 571 {
 572         unsigned long res;
 573         char *argv[8];
 574         int i = 0;
 575         const char *str;
 576         int buf_len;
 577         int str_len;
 578         char *arg_save = NULL, *arg_org = NULL;
 579         int rc;
 580         char buf[128];
 581         struct brcmf_pkt_filter_enable_le enable_parm;
 582         struct brcmf_pkt_filter_enable_le *pkt_filterp;
 583         __le32 mmode_le;
 584
 585         arg_save = kmalloc(strlen(arg) + 1, GFP_ATOMIC);
 586         if (!arg_save)
 587                 goto fail;
 588
 589         arg_org = arg_save;
 590         memcpy(arg_save, arg, strlen(arg) + 1);
 591
 592         argv[i] = strsep(&arg_save, " ");
 593
 594         i = 0;
 595         if (NULL == argv[i]) {
 596                 brcmf_dbg(ERROR, "No args provided\n");
 597                 goto fail;
 598         }
 599
 600         str = "pkt_filter_enable";
 601         str_len = strlen(str);
 602         strncpy(buf, str, str_len);
 603         buf[str_len] = '\0';
 604         buf_len = str_len + 1;
 605
 606         pkt_filterp = (struct brcmf_pkt_filter_enable_le *) (buf + str_len + 1);
 607
 608         /* Parse packet filter id. */
 609         enable_parm.id = 0;
 610         if (!kstrtoul(argv[i], 0, &res))
 611                 enable_parm.id = cpu_to_le32((u32)res);
 612
 613         /* Parse enable/disable value. */
 614         enable_parm.enable = cpu_to_le32(enable);
 615
 616         buf_len += sizeof(enable_parm);
 617         memcpy((char *)pkt_filterp, &enable_parm, sizeof(enable_parm));
 618
 619         /* Enable/disable the specified filter. */
 620         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
 621         rc = rc >= 0 ? 0 : rc;
 622         if (rc)
 623                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 624                           arg, rc);
 625         else
 626                 brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);
 627
 628         /* Contorl the master mode */
 629         mmode_le = cpu_to_le32(master_mode);
 630         brcmf_c_mkiovar("pkt_filter_mode", (char *)&mmode_le, 4, buf,
 631                     sizeof(buf));
 632         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf,
 633                                        sizeof(buf));
 634         rc = rc >= 0 ? 0 : rc;
 635         if (rc)
 636                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 637                           arg, rc);
 638
 639 fail:
 640         kfree(arg_org);
 641 }
 642
 643 void brcmf_c_pktfilter_offload_set(struct brcmf_pub *drvr, char *arg)
 644 {
 645         const char *str;
 646         struct brcmf_pkt_filter_le pkt_filter;
 647         struct brcmf_pkt_filter_le *pkt_filterp;
 648         unsigned long res;
 649         int buf_len;
 650         int str_len;
 651         int rc;
 652         u32 mask_size;
 653         u32 pattern_size;
 654         char *argv[8], *buf = NULL;
 655         int i = 0;
 656         char *arg_save = NULL, *arg_org = NULL;
 657
 658         arg_save = kstrdup(arg, GFP_ATOMIC);
 659         if (!arg_save)
 660                 goto fail;
 661
 662         arg_org = arg_save;
 663
 664         buf = kmalloc(PKTFILTER_BUF_SIZE, GFP_ATOMIC);
 665         if (!buf)
 666                 goto fail;
 667
 668         argv[i] = strsep(&arg_save, " ");
 669         while (argv[i++])
 670                 argv[i] = strsep(&arg_save, " ");
 671
 672         i = 0;
 673         if (NULL == argv[i]) {
 674                 brcmf_dbg(ERROR, "No args provided\n");
 675                 goto fail;
 676         }
 677
 678         str = "pkt_filter_add";
 679         strcpy(buf, str);
 680         str_len = strlen(str);
 681         buf_len = str_len + 1;
 682
 683         pkt_filterp = (struct brcmf_pkt_filter_le *) (buf + str_len + 1);
 684
 685         /* Parse packet filter id. */
 686         pkt_filter.id = 0;
 687         if (!kstrtoul(argv[i], 0, &res))
 688                 pkt_filter.id = cpu_to_le32((u32)res);
 689
 690         if (NULL == argv[++i]) {
 691                 brcmf_dbg(ERROR, "Polarity not provided\n");
 692                 goto fail;
 693         }
 694
 695         /* Parse filter polarity. */
 696         pkt_filter.negate_match = 0;
 697         if (!kstrtoul(argv[i], 0, &res))
 698                 pkt_filter.negate_match = cpu_to_le32((u32)res);
 699
 700         if (NULL == argv[++i]) {
 701                 brcmf_dbg(ERROR, "Filter type not provided\n");
 702                 goto fail;
 703         }
 704
 705         /* Parse filter type. */
 706         pkt_filter.type = 0;
 707         if (!kstrtoul(argv[i], 0, &res))
 708                 pkt_filter.type = cpu_to_le32((u32)res);
 709
 710         if (NULL == argv[++i]) {
 711                 brcmf_dbg(ERROR, "Offset not provided\n");
 712                 goto fail;
 713         }
 714
 715         /* Parse pattern filter offset. */
 716         pkt_filter.u.pattern.offset = 0;
 717         if (!kstrtoul(argv[i], 0, &res))
 718                 pkt_filter.u.pattern.offset = cpu_to_le32((u32)res);
 719
 720         if (NULL == argv[++i]) {
 721                 brcmf_dbg(ERROR, "Bitmask not provided\n");
 722                 goto fail;
 723         }
 724
 725         /* Parse pattern filter mask. */
 726         mask_size =
 727             brcmf_c_pattern_atoh
 728                    (argv[i], (char *)pkt_filterp->u.pattern.mask_and_pattern);
 729
 730         if (NULL == argv[++i]) {
 731                 brcmf_dbg(ERROR, "Pattern not provided\n");
 732                 goto fail;
 733         }
 734
 735         /* Parse pattern filter pattern. */
 736         pattern_size =
 737             brcmf_c_pattern_atoh(argv[i],
 738                                    (char *)&pkt_filterp->u.pattern.
 739                                    mask_and_pattern[mask_size]);
 740
 741         if (mask_size != pattern_size) {
 742                 brcmf_dbg(ERROR, "Mask and pattern not the same size\n");
 743                 goto fail;
 744         }
 745
 746         pkt_filter.u.pattern.size_bytes = cpu_to_le32(mask_size);
 747         buf_len += BRCMF_PKT_FILTER_FIXED_LEN;
 748         buf_len += (BRCMF_PKT_FILTER_PATTERN_FIXED_LEN + 2 * mask_size);
 749
 750         /* Keep-alive attributes are set in local
 751          * variable (keep_alive_pkt), and
 752          ** then memcpy'ed into buffer (keep_alive_pktp) since there is no
 753          ** guarantee that the buffer is properly aligned.
 754          */
 755         memcpy((char *)pkt_filterp,
 756                &pkt_filter,
 757                BRCMF_PKT_FILTER_FIXED_LEN + BRCMF_PKT_FILTER_PATTERN_FIXED_LEN);
 758
 759         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
 760         rc = rc >= 0 ? 0 : rc;
 761
 762         if (rc)
 763                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 764                           arg, rc);
 765         else
 766                 brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);
 767
 768 fail:
 769         kfree(arg_org);
 770
 771         kfree(buf);
 772 }
 773
 774 static void brcmf_c_arp_offload_set(struct brcmf_pub *drvr, int arp_mode)
 775 {
 776         char iovbuf[32];
 777         int retcode;
 778
 779         brcmf_c_mkiovar("arp_ol", (char *)&arp_mode, 4, iovbuf, sizeof(iovbuf));
 780         retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 781                                    iovbuf, sizeof(iovbuf));
 782         retcode = retcode >= 0 ? 0 : retcode;
 783         if (retcode)
 784                 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, retcode = %d\n",
 785                           arp_mode, retcode);
 786         else
 787                 brcmf_dbg(TRACE, "successfully set ARP offload mode to 0x%x\n",
 788                           arp_mode);
 789 }
 790
 791 static void brcmf_c_arp_offload_enable(struct brcmf_pub *drvr, int arp_enable)
 792 {
 793         char iovbuf[32];
 794         int retcode;
 795
 796         brcmf_c_mkiovar("arpoe", (char *)&arp_enable, 4,
 797                         iovbuf, sizeof(iovbuf));
 798         retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 799                                    iovbuf, sizeof(iovbuf));
 800         retcode = retcode >= 0 ? 0 : retcode;
 801         if (retcode)
 802                 brcmf_dbg(TRACE, "failed to enable ARP offload to %d, retcode = %d\n",
 803                           arp_enable, retcode);
 804         else
 805                 brcmf_dbg(TRACE, "successfully enabled ARP offload to %d\n",
 806                           arp_enable);
 807 }
 808
 809 int brcmf_c_preinit_dcmds(struct brcmf_pub *drvr)
 810 {
 811         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];      /*  Room for
 812                                  "event_msgs" + '\0' + bitvec  */
 813         uint up = 0;
 814         char buf[128], *ptr;
 815         u32 dongle_align = BRCMF_SDALIGN;
 816         u32 glom = 0;
 817         u32 roaming = 1;
 818         uint bcn_timeout = 3;
 819         int scan_assoc_time = 40;
 820         int scan_unassoc_time = 40;
 821         int i;
 822
 823         brcmf_os_proto_block(drvr);
 824
 825         /* Set Country code */
 826         if (drvr->country_code[0] != 0) {
 827                 if (brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_COUNTRY,
 828                                               drvr->country_code,
 829                                               sizeof(drvr->country_code)) < 0)
 830                         brcmf_dbg(ERROR, "country code setting failed\n");
 831         }
 832
 833         /* query for 'ver' to get version info from firmware */
 834         memset(buf, 0, sizeof(buf));
 835         ptr = buf;
 836         brcmf_c_mkiovar("ver", NULL, 0, buf, sizeof(buf));
 837         brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, buf, sizeof(buf));
 838         strsep(&ptr, "\n");
 839         /* Print fw version info */
 840         brcmf_dbg(ERROR, "Firmware version = %s\n", buf);
 841
 842         /* Match Host and Dongle rx alignment */
 843         brcmf_c_mkiovar("bus:txglomalign", (char *)&dongle_align, 4, iovbuf,
 844                     sizeof(iovbuf));
 845         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 846                                   sizeof(iovbuf));
 847
 848         /* disable glom option per default */
 849         brcmf_c_mkiovar("bus:txglom", (char *)&glom, 4, iovbuf, sizeof(iovbuf));
 850         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 851                                   sizeof(iovbuf));
 852
 853         /* Setup timeout if Beacons are lost and roam is off to report
 854                  link down */
 855         brcmf_c_mkiovar("bcn_timeout", (char *)&bcn_timeout, 4, iovbuf,
 856                     sizeof(iovbuf));
 857         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 858                                   sizeof(iovbuf));
 859
 860         /* Enable/Disable build-in roaming to allowed ext supplicant to take
 861                  of romaing */
 862         brcmf_c_mkiovar("roam_off", (char *)&roaming, 4,
 863                       iovbuf, sizeof(iovbuf));
 864         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 865                                   sizeof(iovbuf));
 866
 867         /* Force STA UP */
 868         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_UP, (char *)&up, sizeof(up));
 869
 870         /* Setup event_msgs */
 871         brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
 872                       iovbuf, sizeof(iovbuf));
 873         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 874                                   sizeof(iovbuf));
 875
 876         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_CHANNEL_TIME,
 877                          (char *)&scan_assoc_time, sizeof(scan_assoc_time));
 878         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_UNASSOC_TIME,
 879                          (char *)&scan_unassoc_time, sizeof(scan_unassoc_time));
 880
 881         /* Set and enable ARP offload feature */
 882         brcmf_c_arp_offload_set(drvr, BRCMF_ARPOL_MODE);
 883         brcmf_c_arp_offload_enable(drvr, true);
 884
 885         /* Set up pkt filter */
 886         for (i = 0; i < drvr->pktfilter_count; i++) {
 887                 brcmf_c_pktfilter_offload_set(drvr, drvr->pktfilter[i]);
 888                 brcmf_c_pktfilter_offload_enable(drvr, drvr->pktfilter[i],
 889                                                  0, true);
 890         }
 891
 892         brcmf_os_proto_unblock(drvr);
 893
 894         return 0;
 895 }