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
  17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19 #include <linux/kernel.h>
  20 #include <linux/string.h>
  21 #include <linux/sched.h>
  22 #include <linux/netdevice.h>
  23 #include <asm/unaligned.h>
  24 #include <defs.h>
  25 #include <brcmu_wifi.h>
  26 #include <brcmu_utils.h>
  27 #include "dhd.h"
  28 #include "dhd_bus.h"
  29 #include "dhd_proto.h"
  30 #include "dhd_dbg.h"
  31
  32 #define BRCM_OUI                        "\x00\x10\x18"
  33 #define DOT11_OUI_LEN                   3
  34 #define BCMILCP_BCM_SUBTYPE_EVENT       1
  35 #define PKTFILTER_BUF_SIZE              2048
  36 #define BRCMF_ARPOL_MODE                0xb     /* agent|snoop|peer_autoreply */
  37
  38 #define MSGTRACE_VERSION        1
  39
  40 #define BRCMF_PKT_FILTER_FIXED_LEN      offsetof(struct brcmf_pkt_filter_le, u)
  41 #define BRCMF_PKT_FILTER_PATTERN_FIXED_LEN      \
  42         offsetof(struct brcmf_pkt_filter_pattern_le, mask_and_pattern)
  43
  44 #ifdef DEBUG
  45 static const char brcmf_version[] =
  46         "Dongle Host Driver, version " BRCMF_VERSION_STR "\nCompiled on "
  47         __DATE__ " at " __TIME__;
  48 #else
  49 static const char brcmf_version[] =
  50         "Dongle Host Driver, version " BRCMF_VERSION_STR;
  51 #endif
  52
  53 /* Message trace header */
  54 struct msgtrace_hdr {
  55         u8 version;
  56         u8 spare;
  57         __be16 len;             /* Len of the trace */
  58         __be32 seqnum;          /* Sequence number of message. Useful
  59                                  * if the messsage has been lost
  60                                  * because of DMA error or a bus reset
  61                                  * (ex: SDIO Func2)
  62                                  */
  63         __be32 discarded_bytes; /* Number of discarded bytes because of
  64                                  trace overflow  */
  65         __be32 discarded_printf;        /* Number of discarded printf
  66                                  because of trace overflow */
  67 } __packed;
  68
  69
  70 uint
  71 brcmf_c_mkiovar(char *name, char *data, uint datalen, char *buf, uint buflen)
  72 {
  73         uint len;
  74
  75         len = strlen(name) + 1;
  76
  77         if ((len + datalen) > buflen)
  78                 return 0;
  79
  80         strncpy(buf, name, buflen);
  81
  82         /* append data onto the end of the name string */
  83         memcpy(&buf[len], data, datalen);
  84         len += datalen;
  85
  86         return len;
  87 }
  88
  89 bool brcmf_c_prec_enq(struct device *dev, struct pktq *q,
  90                       struct sk_buff *pkt, int prec)
  91 {
  92         struct sk_buff *p;
  93         int eprec = -1;         /* precedence to evict from */
  94         bool discard_oldest;
  95         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
  96         struct brcmf_pub *drvr = bus_if->drvr;
  97
  98         /* Fast case, precedence queue is not full and we are also not
  99          * exceeding total queue length
 100          */
 101         if (!pktq_pfull(q, prec) && !pktq_full(q)) {
 102                 brcmu_pktq_penq(q, prec, pkt);
 103                 return true;
 104         }
 105
 106         /* Determine precedence from which to evict packet, if any */
 107         if (pktq_pfull(q, prec))
 108                 eprec = prec;
 109         else if (pktq_full(q)) {
 110                 p = brcmu_pktq_peek_tail(q, &eprec);
 111                 if (eprec > prec)
 112                         return false;
 113         }
 114
 115         /* Evict if needed */
 116         if (eprec >= 0) {
 117                 /* Detect queueing to unconfigured precedence */
 118                 discard_oldest = ac_bitmap_tst(drvr->wme_dp, eprec);
 119                 if (eprec == prec && !discard_oldest)
 120                         return false;   /* refuse newer (incoming) packet */
 121                 /* Evict packet according to discard policy */
 122                 p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) :
 123                         brcmu_pktq_pdeq_tail(q, eprec);
 124                 if (p == NULL)
 125                         brcmf_dbg(ERROR, "brcmu_pktq_penq() failed, oldest %d\n",
 126                                   discard_oldest);
 127
 128                 brcmu_pkt_buf_free_skb(p);
 129         }
 130
 131         /* Enqueue */
 132         p = brcmu_pktq_penq(q, prec, pkt);
 133         if (p == NULL)
 134                 brcmf_dbg(ERROR, "brcmu_pktq_penq() failed\n");
 135
 136         return p != NULL;
 137 }
 138
 139 #ifdef DEBUG
 140 static void
 141 brcmf_c_show_host_event(struct brcmf_event_msg *event, void *event_data)
 142 {
 143         uint i, status, reason;
 144         bool group = false, flush_txq = false, link = false;
 145         char *auth_str, *event_name;
 146         unsigned char *buf;
 147         char err_msg[256], eabuf[ETHER_ADDR_STR_LEN];
 148         static struct {
 149                 uint event;
 150                 char *event_name;
 151         } event_names[] = {
 152                 {
 153                 BRCMF_E_SET_SSID, "SET_SSID"}, {
 154                 BRCMF_E_JOIN, "JOIN"}, {
 155                 BRCMF_E_START, "START"}, {
 156                 BRCMF_E_AUTH, "AUTH"}, {
 157                 BRCMF_E_AUTH_IND, "AUTH_IND"}, {
 158                 BRCMF_E_DEAUTH, "DEAUTH"}, {
 159                 BRCMF_E_DEAUTH_IND, "DEAUTH_IND"}, {
 160                 BRCMF_E_ASSOC, "ASSOC"}, {
 161                 BRCMF_E_ASSOC_IND, "ASSOC_IND"}, {
 162                 BRCMF_E_REASSOC, "REASSOC"}, {
 163                 BRCMF_E_REASSOC_IND, "REASSOC_IND"}, {
 164                 BRCMF_E_DISASSOC, "DISASSOC"}, {
 165                 BRCMF_E_DISASSOC_IND, "DISASSOC_IND"}, {
 166                 BRCMF_E_QUIET_START, "START_QUIET"}, {
 167                 BRCMF_E_QUIET_END, "END_QUIET"}, {
 168                 BRCMF_E_BEACON_RX, "BEACON_RX"}, {
 169                 BRCMF_E_LINK, "LINK"}, {
 170                 BRCMF_E_MIC_ERROR, "MIC_ERROR"}, {
 171                 BRCMF_E_NDIS_LINK, "NDIS_LINK"}, {
 172                 BRCMF_E_ROAM, "ROAM"}, {
 173                 BRCMF_E_TXFAIL, "TXFAIL"}, {
 174                 BRCMF_E_PMKID_CACHE, "PMKID_CACHE"}, {
 175                 BRCMF_E_RETROGRADE_TSF, "RETROGRADE_TSF"}, {
 176                 BRCMF_E_PRUNE, "PRUNE"}, {
 177                 BRCMF_E_AUTOAUTH, "AUTOAUTH"}, {
 178                 BRCMF_E_EAPOL_MSG, "EAPOL_MSG"}, {
 179                 BRCMF_E_SCAN_COMPLETE, "SCAN_COMPLETE"}, {
 180                 BRCMF_E_ADDTS_IND, "ADDTS_IND"}, {
 181                 BRCMF_E_DELTS_IND, "DELTS_IND"}, {
 182                 BRCMF_E_BCNSENT_IND, "BCNSENT_IND"}, {
 183                 BRCMF_E_BCNRX_MSG, "BCNRX_MSG"}, {
 184                 BRCMF_E_BCNLOST_MSG, "BCNLOST_MSG"}, {
 185                 BRCMF_E_ROAM_PREP, "ROAM_PREP"}, {
 186                 BRCMF_E_PFN_NET_FOUND, "PNO_NET_FOUND"}, {
 187                 BRCMF_E_PFN_NET_LOST, "PNO_NET_LOST"}, {
 188                 BRCMF_E_RESET_COMPLETE, "RESET_COMPLETE"}, {
 189                 BRCMF_E_JOIN_START, "JOIN_START"}, {
 190                 BRCMF_E_ROAM_START, "ROAM_START"}, {
 191                 BRCMF_E_ASSOC_START, "ASSOC_START"}, {
 192                 BRCMF_E_IBSS_ASSOC, "IBSS_ASSOC"}, {
 193                 BRCMF_E_RADIO, "RADIO"}, {
 194                 BRCMF_E_PSM_WATCHDOG, "PSM_WATCHDOG"}, {
 195                 BRCMF_E_PROBREQ_MSG, "PROBREQ_MSG"}, {
 196                 BRCMF_E_SCAN_CONFIRM_IND, "SCAN_CONFIRM_IND"}, {
 197                 BRCMF_E_PSK_SUP, "PSK_SUP"}, {
 198                 BRCMF_E_COUNTRY_CODE_CHANGED, "COUNTRY_CODE_CHANGED"}, {
 199                 BRCMF_E_EXCEEDED_MEDIUM_TIME, "EXCEEDED_MEDIUM_TIME"}, {
 200                 BRCMF_E_ICV_ERROR, "ICV_ERROR"}, {
 201                 BRCMF_E_UNICAST_DECODE_ERROR, "UNICAST_DECODE_ERROR"}, {
 202                 BRCMF_E_MULTICAST_DECODE_ERROR, "MULTICAST_DECODE_ERROR"}, {
 203                 BRCMF_E_TRACE, "TRACE"}, {
 204                 BRCMF_E_ACTION_FRAME, "ACTION FRAME"}, {
 205                 BRCMF_E_ACTION_FRAME_COMPLETE, "ACTION FRAME TX COMPLETE"}, {
 206                 BRCMF_E_IF, "IF"}, {
 207                 BRCMF_E_RSSI, "RSSI"}, {
 208                 BRCMF_E_PFN_SCAN_COMPLETE, "SCAN_COMPLETE"}, {
 209                 BRCMF_E_ESCAN_RESULT, "ESCAN_RESULT"}
 210         };
 211         uint event_type, flags, auth_type, datalen;
 212         static u32 seqnum_prev;
 213         struct msgtrace_hdr hdr;
 214         u32 nblost;
 215         char *s, *p;
 216
 217         event_type = be32_to_cpu(event->event_type);
 218         flags = be16_to_cpu(event->flags);
 219         status = be32_to_cpu(event->status);
 220         reason = be32_to_cpu(event->reason);
 221         auth_type = be32_to_cpu(event->auth_type);
 222         datalen = be32_to_cpu(event->datalen);
 223         /* debug dump of event messages */
 224         sprintf(eabuf, "%pM", event->addr);
 225
 226         event_name = "UNKNOWN";
 227         for (i = 0; i < ARRAY_SIZE(event_names); i++) {
 228                 if (event_names[i].event == event_type)
 229                         event_name = event_names[i].event_name;
 230         }
 231
 232         brcmf_dbg(EVENT, "EVENT: %s, event ID = %d\n", event_name, event_type);
 233         brcmf_dbg(EVENT, "flags 0x%04x, status %d, reason %d, auth_type %d MAC %s\n",
 234                   flags, status, reason, auth_type, eabuf);
 235
 236         if (flags & BRCMF_EVENT_MSG_LINK)
 237                 link = true;
 238         if (flags & BRCMF_EVENT_MSG_GROUP)
 239                 group = true;
 240         if (flags & BRCMF_EVENT_MSG_FLUSHTXQ)
 241                 flush_txq = true;
 242
 243         switch (event_type) {
 244         case BRCMF_E_START:
 245         case BRCMF_E_DEAUTH:
 246         case BRCMF_E_DISASSOC:
 247                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 248                 break;
 249
 250         case BRCMF_E_ASSOC_IND:
 251         case BRCMF_E_REASSOC_IND:
 252                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 253                 break;
 254
 255         case BRCMF_E_ASSOC:
 256         case BRCMF_E_REASSOC:
 257                 if (status == BRCMF_E_STATUS_SUCCESS)
 258                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, SUCCESS\n",
 259                                   event_name, eabuf);
 260                 else if (status == BRCMF_E_STATUS_TIMEOUT)
 261                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, TIMEOUT\n",
 262                                   event_name, eabuf);
 263                 else if (status == BRCMF_E_STATUS_FAIL)
 264                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, FAILURE, reason %d\n",
 265                                   event_name, eabuf, (int)reason);
 266                 else
 267                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, unexpected status %d\n",
 268                                   event_name, eabuf, (int)status);
 269                 break;
 270
 271         case BRCMF_E_DEAUTH_IND:
 272         case BRCMF_E_DISASSOC_IND:
 273                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, reason %d\n",
 274                           event_name, eabuf, (int)reason);
 275                 break;
 276
 277         case BRCMF_E_AUTH:
 278         case BRCMF_E_AUTH_IND:
 279                 if (auth_type == WLAN_AUTH_OPEN)
 280                         auth_str = "Open System";
 281                 else if (auth_type == WLAN_AUTH_SHARED_KEY)
 282                         auth_str = "Shared Key";
 283                 else {
 284                         sprintf(err_msg, "AUTH unknown: %d", (int)auth_type);
 285                         auth_str = err_msg;
 286                 }
 287                 if (event_type == BRCMF_E_AUTH_IND)
 288                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s\n",
 289                                   event_name, eabuf, auth_str);
 290                 else if (status == BRCMF_E_STATUS_SUCCESS)
 291                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, SUCCESS\n",
 292                                   event_name, eabuf, auth_str);
 293                 else if (status == BRCMF_E_STATUS_TIMEOUT)
 294                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, TIMEOUT\n",
 295                                   event_name, eabuf, auth_str);
 296                 else if (status == BRCMF_E_STATUS_FAIL) {
 297                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, FAILURE, reason %d\n",
 298                                   event_name, eabuf, auth_str, (int)reason);
 299                 }
 300
 301                 break;
 302
 303         case BRCMF_E_JOIN:
 304         case BRCMF_E_ROAM:
 305         case BRCMF_E_SET_SSID:
 306                 if (status == BRCMF_E_STATUS_SUCCESS)
 307                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n",
 308                                   event_name, eabuf);
 309                 else if (status == BRCMF_E_STATUS_FAIL)
 310                         brcmf_dbg(EVENT, "MACEVENT: %s, failed\n", event_name);
 311                 else if (status == BRCMF_E_STATUS_NO_NETWORKS)
 312                         brcmf_dbg(EVENT, "MACEVENT: %s, no networks found\n",
 313                                   event_name);
 314                 else
 315                         brcmf_dbg(EVENT, "MACEVENT: %s, unexpected status %d\n",
 316                                   event_name, (int)status);
 317                 break;
 318
 319         case BRCMF_E_BEACON_RX:
 320                 if (status == BRCMF_E_STATUS_SUCCESS)
 321                         brcmf_dbg(EVENT, "MACEVENT: %s, SUCCESS\n", event_name);
 322                 else if (status == BRCMF_E_STATUS_FAIL)
 323                         brcmf_dbg(EVENT, "MACEVENT: %s, FAIL\n", event_name);
 324                 else
 325                         brcmf_dbg(EVENT, "MACEVENT: %s, status %d\n",
 326                                   event_name, status);
 327                 break;
 328
 329         case BRCMF_E_LINK:
 330                 brcmf_dbg(EVENT, "MACEVENT: %s %s\n",
 331                           event_name, link ? "UP" : "DOWN");
 332                 break;
 333
 334         case BRCMF_E_MIC_ERROR:
 335                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, Group %d, Flush %d\n",
 336                           event_name, eabuf, group, flush_txq);
 337                 break;
 338
 339         case BRCMF_E_ICV_ERROR:
 340         case BRCMF_E_UNICAST_DECODE_ERROR:
 341         case BRCMF_E_MULTICAST_DECODE_ERROR:
 342                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 343                 break;
 344
 345         case BRCMF_E_TXFAIL:
 346                 brcmf_dbg(EVENT, "MACEVENT: %s, RA %s\n", event_name, eabuf);
 347                 break;
 348
 349         case BRCMF_E_SCAN_COMPLETE:
 350         case BRCMF_E_PMKID_CACHE:
 351                 brcmf_dbg(EVENT, "MACEVENT: %s\n", event_name);
 352                 break;
 353
 354         case BRCMF_E_ESCAN_RESULT:
 355                 brcmf_dbg(EVENT, "MACEVENT: %s\n", event_name);
 356                 datalen = 0;
 357                 break;
 358
 359         case BRCMF_E_PFN_NET_FOUND:
 360         case BRCMF_E_PFN_NET_LOST:
 361         case BRCMF_E_PFN_SCAN_COMPLETE:
 362                 brcmf_dbg(EVENT, "PNOEVENT: %s\n", event_name);
 363                 break;
 364
 365         case BRCMF_E_PSK_SUP:
 366         case BRCMF_E_PRUNE:
 367                 brcmf_dbg(EVENT, "MACEVENT: %s, status %d, reason %d\n",
 368                           event_name, (int)status, (int)reason);
 369                 break;
 370
 371         case BRCMF_E_TRACE:
 372                 buf = (unsigned char *) event_data;
 373                 memcpy(&hdr, buf, sizeof(struct msgtrace_hdr));
 374
 375                 if (hdr.version != MSGTRACE_VERSION) {
 376                         brcmf_dbg(ERROR,
 377                                   "MACEVENT: %s [unsupported version --> brcmf"
 378                                   " version:%d dongle version:%d]\n",
 379                                   event_name, MSGTRACE_VERSION, hdr.version);
 380                         /* Reset datalen to avoid display below */
 381                         datalen = 0;
 382                         break;
 383                 }
 384
 385                 /* There are 2 bytes available at the end of data */
 386                 *(buf + sizeof(struct msgtrace_hdr)
 387                          + be16_to_cpu(hdr.len)) = '\0';
 388
 389                 if (be32_to_cpu(hdr.discarded_bytes)
 390                     || be32_to_cpu(hdr.discarded_printf))
 391                         brcmf_dbg(ERROR,
 392                                   "WLC_E_TRACE: [Discarded traces in dongle -->"
 393                                   " discarded_bytes %d discarded_printf %d]\n",
 394                                   be32_to_cpu(hdr.discarded_bytes),
 395                                   be32_to_cpu(hdr.discarded_printf));
 396
 397                 nblost = be32_to_cpu(hdr.seqnum) - seqnum_prev - 1;
 398                 if (nblost > 0)
 399                         brcmf_dbg(ERROR, "WLC_E_TRACE: [Event lost --> seqnum "
 400                                   " %d nblost %d\n", be32_to_cpu(hdr.seqnum),
 401                                   nblost);
 402                 seqnum_prev = be32_to_cpu(hdr.seqnum);
 403
 404                 /* Display the trace buffer. Advance from \n to \n to
 405                  * avoid display big
 406                  * printf (issue with Linux printk )
 407                  */
 408                 p = (char *)&buf[sizeof(struct msgtrace_hdr)];
 409                 while ((s = strstr(p, "\n")) != NULL) {
 410                         *s = '\0';
 411                         pr_debug("%s\n", p);
 412                         p = s + 1;
 413                 }
 414                 pr_debug("%s\n", p);
 415
 416                 /* Reset datalen to avoid display below */
 417                 datalen = 0;
 418                 break;
 419
 420         case BRCMF_E_RSSI:
 421                 brcmf_dbg(EVENT, "MACEVENT: %s %d\n",
 422                           event_name, be32_to_cpu(*((__be32 *)event_data)));
 423                 break;
 424
 425         default:
 426                 brcmf_dbg(EVENT,
 427                           "MACEVENT: %s %d, MAC %s, status %d, reason %d, "
 428                           "auth %d\n", event_name, event_type, eabuf,
 429                           (int)status, (int)reason, (int)auth_type);
 430                 break;
 431         }
 432
 433         /* show any appended data */
 434         if (datalen) {
 435                 buf = (unsigned char *) event_data;
 436                 brcmf_dbg(EVENT, " data (%d) : ", datalen);
 437                 for (i = 0; i < datalen; i++)
 438                         brcmf_dbg(EVENT, " 0x%02x ", *buf++);
 439                 brcmf_dbg(EVENT, "\n");
 440         }
 441 }
 442 #endif                          /* DEBUG */
 443
 444 int
 445 brcmf_c_host_event(struct brcmf_pub *drvr, int *ifidx, void *pktdata,
 446                    struct brcmf_event_msg *event, void **data_ptr)
 447 {
 448         /* check whether packet is a BRCM event pkt */
 449         struct brcmf_event *pvt_data = (struct brcmf_event *) pktdata;
 450         struct brcmf_if_event *ifevent;
 451         char *event_data;
 452         u32 type, status;
 453         u16 flags;
 454         int evlen;
 455
 456         if (memcmp(BRCM_OUI, &pvt_data->hdr.oui[0], DOT11_OUI_LEN)) {
 457                 brcmf_dbg(ERROR, "mismatched OUI, bailing\n");
 458                 return -EBADE;
 459         }
 460
 461         /* BRCM event pkt may be unaligned - use xxx_ua to load user_subtype. */
 462         if (get_unaligned_be16(&pvt_data->hdr.usr_subtype) !=
 463             BCMILCP_BCM_SUBTYPE_EVENT) {
 464                 brcmf_dbg(ERROR, "mismatched subtype, bailing\n");
 465                 return -EBADE;
 466         }
 467
 468         *data_ptr = &pvt_data[1];
 469         event_data = *data_ptr;
 470
 471         /* memcpy since BRCM event pkt may be unaligned. */
 472         memcpy(event, &pvt_data->msg, sizeof(struct brcmf_event_msg));
 473
 474         type = get_unaligned_be32(&event->event_type);
 475         flags = get_unaligned_be16(&event->flags);
 476         status = get_unaligned_be32(&event->status);
 477         evlen = get_unaligned_be32(&event->datalen) +
 478                 sizeof(struct brcmf_event);
 479
 480         switch (type) {
 481         case BRCMF_E_IF:
 482                 ifevent = (struct brcmf_if_event *) event_data;
 483                 brcmf_dbg(TRACE, "if event\n");
 484
 485                 if (ifevent->ifidx > 0 && ifevent->ifidx < BRCMF_MAX_IFS) {
 486                         if (ifevent->action == BRCMF_E_IF_ADD)
 487                                 brcmf_add_if(drvr->dev, ifevent->ifidx,
 488                                              event->ifname,
 489                                              pvt_data->eth.h_dest);
 490                         else
 491                                 brcmf_del_if(drvr, ifevent->ifidx);
 492                 } else {
 493                         brcmf_dbg(ERROR, "Invalid ifidx %d for %s\n",
 494                                   ifevent->ifidx, event->ifname);
 495                 }
 496
 497                 /* send up the if event: btamp user needs it */
 498                 *ifidx = brcmf_ifname2idx(drvr, event->ifname);
 499                 break;
 500
 501                 /* These are what external supplicant/authenticator wants */
 502         case BRCMF_E_LINK:
 503         case BRCMF_E_ASSOC_IND:
 504         case BRCMF_E_REASSOC_IND:
 505         case BRCMF_E_DISASSOC_IND:
 506         case BRCMF_E_MIC_ERROR:
 507         default:
 508                 /* Fall through: this should get _everything_  */
 509
 510                 *ifidx = brcmf_ifname2idx(drvr, event->ifname);
 511                 brcmf_dbg(TRACE, "MAC event %d, flags %x, status %x\n",
 512                           type, flags, status);
 513
 514                 /* put it back to BRCMF_E_NDIS_LINK */
 515                 if (type == BRCMF_E_NDIS_LINK) {
 516                         u32 temp1;
 517                         __be32 temp2;
 518
 519                         temp1 = get_unaligned_be32(&event->event_type);
 520                         brcmf_dbg(TRACE, "Converted to WLC_E_LINK type %d\n",
 521                                   temp1);
 522
 523                         temp2 = cpu_to_be32(BRCMF_E_NDIS_LINK);
 524                         memcpy((void *)(&pvt_data->msg.event_type), &temp2,
 525                                sizeof(pvt_data->msg.event_type));
 526                 }
 527                 break;
 528         }
 529
 530 #ifdef DEBUG
 531         brcmf_c_show_host_event(event, event_data);
 532 #endif                          /* DEBUG */
 533
 534         return 0;
 535 }
 536
 537 /* Convert user's input in hex pattern to byte-size mask */
 538 static int brcmf_c_pattern_atoh(char *src, char *dst)
 539 {
 540         int i;
 541         if (strncmp(src, "0x", 2) != 0 && strncmp(src, "0X", 2) != 0) {
 542                 brcmf_dbg(ERROR, "Mask invalid format. Needs to start with 0x\n");
 543                 return -EINVAL;
 544         }
 545         src = src + 2;          /* Skip past 0x */
 546         if (strlen(src) % 2 != 0) {
 547                 brcmf_dbg(ERROR, "Mask invalid format. Length must be even.\n");
 548                 return -EINVAL;
 549         }
 550         for (i = 0; *src != '\0'; i++) {
 551                 unsigned long res;
 552                 char num[3];
 553                 strncpy(num, src, 2);
 554                 num[2] = '\0';
 555                 if (kstrtoul(num, 16, &res))
 556                         return -EINVAL;
 557                 dst[i] = (u8)res;
 558                 src += 2;
 559         }
 560         return i;
 561 }
 562
 563 void
 564 brcmf_c_pktfilter_offload_enable(struct brcmf_pub *drvr, char *arg, int enable,
 565                              int master_mode)
 566 {
 567         unsigned long res;
 568         char *argv[8];
 569         int i = 0;
 570         const char *str;
 571         int buf_len;
 572         int str_len;
 573         char *arg_save = NULL, *arg_org = NULL;
 574         int rc;
 575         char buf[128];
 576         struct brcmf_pkt_filter_enable_le enable_parm;
 577         struct brcmf_pkt_filter_enable_le *pkt_filterp;
 578         __le32 mmode_le;
 579
 580         arg_save = kmalloc(strlen(arg) + 1, GFP_ATOMIC);
 581         if (!arg_save)
 582                 goto fail;
 583
 584         arg_org = arg_save;
 585         memcpy(arg_save, arg, strlen(arg) + 1);
 586
 587         argv[i] = strsep(&arg_save, " ");
 588
 589         i = 0;
 590         if (NULL == argv[i]) {
 591                 brcmf_dbg(ERROR, "No args provided\n");
 592                 goto fail;
 593         }
 594
 595         str = "pkt_filter_enable";
 596         str_len = strlen(str);
 597         strncpy(buf, str, str_len);
 598         buf[str_len] = '\0';
 599         buf_len = str_len + 1;
 600
 601         pkt_filterp = (struct brcmf_pkt_filter_enable_le *) (buf + str_len + 1);
 602
 603         /* Parse packet filter id. */
 604         enable_parm.id = 0;
 605         if (!kstrtoul(argv[i], 0, &res))
 606                 enable_parm.id = cpu_to_le32((u32)res);
 607
 608         /* Parse enable/disable value. */
 609         enable_parm.enable = cpu_to_le32(enable);
 610
 611         buf_len += sizeof(enable_parm);
 612         memcpy((char *)pkt_filterp, &enable_parm, sizeof(enable_parm));
 613
 614         /* Enable/disable the specified filter. */
 615         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
 616         rc = rc >= 0 ? 0 : rc;
 617         if (rc)
 618                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 619                           arg, rc);
 620         else
 621                 brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);
 622
 623         /* Contorl the master mode */
 624         mmode_le = cpu_to_le32(master_mode);
 625         brcmf_c_mkiovar("pkt_filter_mode", (char *)&mmode_le, 4, buf,
 626                     sizeof(buf));
 627         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf,
 628                                        sizeof(buf));
 629         rc = rc >= 0 ? 0 : rc;
 630         if (rc)
 631                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 632                           arg, rc);
 633
 634 fail:
 635         kfree(arg_org);
 636 }
 637
 638 void brcmf_c_pktfilter_offload_set(struct brcmf_pub *drvr, char *arg)
 639 {
 640         const char *str;
 641         struct brcmf_pkt_filter_le pkt_filter;
 642         struct brcmf_pkt_filter_le *pkt_filterp;
 643         unsigned long res;
 644         int buf_len;
 645         int str_len;
 646         int rc;
 647         u32 mask_size;
 648         u32 pattern_size;
 649         char *argv[8], *buf = NULL;
 650         int i = 0;
 651         char *arg_save = NULL, *arg_org = NULL;
 652
 653         arg_save = kstrdup(arg, GFP_ATOMIC);
 654         if (!arg_save)
 655                 goto fail;
 656
 657         arg_org = arg_save;
 658
 659         buf = kmalloc(PKTFILTER_BUF_SIZE, GFP_ATOMIC);
 660         if (!buf)
 661                 goto fail;
 662
 663         argv[i] = strsep(&arg_save, " ");
 664         while (argv[i++])
 665                 argv[i] = strsep(&arg_save, " ");
 666
 667         i = 0;
 668         if (NULL == argv[i]) {
 669                 brcmf_dbg(ERROR, "No args provided\n");
 670                 goto fail;
 671         }
 672
 673         str = "pkt_filter_add";
 674         strcpy(buf, str);
 675         str_len = strlen(str);
 676         buf_len = str_len + 1;
 677
 678         pkt_filterp = (struct brcmf_pkt_filter_le *) (buf + str_len + 1);
 679
 680         /* Parse packet filter id. */
 681         pkt_filter.id = 0;
 682         if (!kstrtoul(argv[i], 0, &res))
 683                 pkt_filter.id = cpu_to_le32((u32)res);
 684
 685         if (NULL == argv[++i]) {
 686                 brcmf_dbg(ERROR, "Polarity not provided\n");
 687                 goto fail;
 688         }
 689
 690         /* Parse filter polarity. */
 691         pkt_filter.negate_match = 0;
 692         if (!kstrtoul(argv[i], 0, &res))
 693                 pkt_filter.negate_match = cpu_to_le32((u32)res);
 694
 695         if (NULL == argv[++i]) {
 696                 brcmf_dbg(ERROR, "Filter type not provided\n");
 697                 goto fail;
 698         }
 699
 700         /* Parse filter type. */
 701         pkt_filter.type = 0;
 702         if (!kstrtoul(argv[i], 0, &res))
 703                 pkt_filter.type = cpu_to_le32((u32)res);
 704
 705         if (NULL == argv[++i]) {
 706                 brcmf_dbg(ERROR, "Offset not provided\n");
 707                 goto fail;
 708         }
 709
 710         /* Parse pattern filter offset. */
 711         pkt_filter.u.pattern.offset = 0;
 712         if (!kstrtoul(argv[i], 0, &res))
 713                 pkt_filter.u.pattern.offset = cpu_to_le32((u32)res);
 714
 715         if (NULL == argv[++i]) {
 716                 brcmf_dbg(ERROR, "Bitmask not provided\n");
 717                 goto fail;
 718         }
 719
 720         /* Parse pattern filter mask. */
 721         mask_size =
 722             brcmf_c_pattern_atoh
 723                    (argv[i], (char *)pkt_filterp->u.pattern.mask_and_pattern);
 724
 725         if (NULL == argv[++i]) {
 726                 brcmf_dbg(ERROR, "Pattern not provided\n");
 727                 goto fail;
 728         }
 729
 730         /* Parse pattern filter pattern. */
 731         pattern_size =
 732             brcmf_c_pattern_atoh(argv[i],
 733                                    (char *)&pkt_filterp->u.pattern.
 734                                    mask_and_pattern[mask_size]);
 735
 736         if (mask_size != pattern_size) {
 737                 brcmf_dbg(ERROR, "Mask and pattern not the same size\n");
 738                 goto fail;
 739         }
 740
 741         pkt_filter.u.pattern.size_bytes = cpu_to_le32(mask_size);
 742         buf_len += BRCMF_PKT_FILTER_FIXED_LEN;
 743         buf_len += (BRCMF_PKT_FILTER_PATTERN_FIXED_LEN + 2 * mask_size);
 744
 745         /* Keep-alive attributes are set in local
 746          * variable (keep_alive_pkt), and
 747          ** then memcpy'ed into buffer (keep_alive_pktp) since there is no
 748          ** guarantee that the buffer is properly aligned.
 749          */
 750         memcpy((char *)pkt_filterp,
 751                &pkt_filter,
 752                BRCMF_PKT_FILTER_FIXED_LEN + BRCMF_PKT_FILTER_PATTERN_FIXED_LEN);
 753
 754         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
 755         rc = rc >= 0 ? 0 : rc;
 756
 757         if (rc)
 758                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 759                           arg, rc);
 760         else
 761                 brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);
 762
 763 fail:
 764         kfree(arg_org);
 765
 766         kfree(buf);
 767 }
 768
 769 static void brcmf_c_arp_offload_set(struct brcmf_pub *drvr, int arp_mode)
 770 {
 771         char iovbuf[32];
 772         int retcode;
 773         __le32 arp_mode_le;
 774
 775         arp_mode_le = cpu_to_le32(arp_mode);
 776         brcmf_c_mkiovar("arp_ol", (char *)&arp_mode_le, 4, iovbuf,
 777                         sizeof(iovbuf));
 778         retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 779                                    iovbuf, sizeof(iovbuf));
 780         retcode = retcode >= 0 ? 0 : retcode;
 781         if (retcode)
 782                 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, retcode = %d\n",
 783                           arp_mode, retcode);
 784         else
 785                 brcmf_dbg(TRACE, "successfully set ARP offload mode to 0x%x\n",
 786                           arp_mode);
 787 }
 788
 789 static void brcmf_c_arp_offload_enable(struct brcmf_pub *drvr, int arp_enable)
 790 {
 791         char iovbuf[32];
 792         int retcode;
 793         __le32 arp_enable_le;
 794
 795         arp_enable_le = cpu_to_le32(arp_enable);
 796
 797         brcmf_c_mkiovar("arpoe", (char *)&arp_enable_le, 4,
 798                         iovbuf, sizeof(iovbuf));
 799         retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 800                                    iovbuf, sizeof(iovbuf));
 801         retcode = retcode >= 0 ? 0 : retcode;
 802         if (retcode)
 803                 brcmf_dbg(TRACE, "failed to enable ARP offload to %d, retcode = %d\n",
 804                           arp_enable, retcode);
 805         else
 806                 brcmf_dbg(TRACE, "successfully enabled ARP offload to %d\n",
 807                           arp_enable);
 808 }
 809
 810 int brcmf_c_preinit_dcmds(struct brcmf_pub *drvr)
 811 {
 812         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];      /*  Room for
 813                                  "event_msgs" + '\0' + bitvec  */
 814         char buf[128], *ptr;
 815         __le32 roaming_le = cpu_to_le32(1);
 816         __le32 bcn_timeout_le = cpu_to_le32(3);
 817         __le32 scan_assoc_time_le = cpu_to_le32(40);
 818         __le32 scan_unassoc_time_le = cpu_to_le32(40);
 819         int i;
 820         struct brcmf_bus_dcmd *cmdlst;
 821         struct list_head *cur, *q;
 822
 823         mutex_lock(&drvr->proto_block);
 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         /* Setup timeout if Beacons are lost and roam is off to report
 843                  link down */
 844         brcmf_c_mkiovar("bcn_timeout", (char *)&bcn_timeout_le, 4, iovbuf,
 845                     sizeof(iovbuf));
 846         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 847                                   sizeof(iovbuf));
 848
 849         /* Enable/Disable build-in roaming to allowed ext supplicant to take
 850                  of romaing */
 851         brcmf_c_mkiovar("roam_off", (char *)&roaming_le, 4,
 852                       iovbuf, sizeof(iovbuf));
 853         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 854                                   sizeof(iovbuf));
 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_le, sizeof(scan_assoc_time_le));
 864         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_UNASSOC_TIME,
 865                  (char *)&scan_unassoc_time_le, sizeof(scan_unassoc_time_le));
 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         /* set bus specific command if there is any */
 879         list_for_each_safe(cur, q, &drvr->bus_if->dcmd_list) {
 880                 cmdlst = list_entry(cur, struct brcmf_bus_dcmd, list);
 881                 if (cmdlst->name && cmdlst->param && cmdlst->param_len) {
 882                         brcmf_c_mkiovar(cmdlst->name, cmdlst->param,
 883                                         cmdlst->param_len, iovbuf,
 884                                         sizeof(iovbuf));
 885                         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 886                                                  iovbuf, sizeof(iovbuf));
 887                 }
 888                 list_del(cur);
 889                 kfree(cmdlst);
 890         }
 891
 892         mutex_unlock(&drvr->proto_block);
 893
 894         return 0;
 895 }