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         };
 210         uint event_type, flags, auth_type, datalen;
 211         static u32 seqnum_prev;
 212         struct msgtrace_hdr hdr;
 213         u32 nblost;
 214         char *s, *p;
 215
 216         event_type = be32_to_cpu(event->event_type);
 217         flags = be16_to_cpu(event->flags);
 218         status = be32_to_cpu(event->status);
 219         reason = be32_to_cpu(event->reason);
 220         auth_type = be32_to_cpu(event->auth_type);
 221         datalen = be32_to_cpu(event->datalen);
 222         /* debug dump of event messages */
 223         sprintf(eabuf, "%pM", event->addr);
 224
 225         event_name = "UNKNOWN";
 226         for (i = 0; i < ARRAY_SIZE(event_names); i++) {
 227                 if (event_names[i].event == event_type)
 228                         event_name = event_names[i].event_name;
 229         }
 230
 231         brcmf_dbg(EVENT, "EVENT: %s, event ID = %d\n", event_name, event_type);
 232         brcmf_dbg(EVENT, "flags 0x%04x, status %d, reason %d, auth_type %d MAC %s\n",
 233                   flags, status, reason, auth_type, eabuf);
 234
 235         if (flags & BRCMF_EVENT_MSG_LINK)
 236                 link = true;
 237         if (flags & BRCMF_EVENT_MSG_GROUP)
 238                 group = true;
 239         if (flags & BRCMF_EVENT_MSG_FLUSHTXQ)
 240                 flush_txq = true;
 241
 242         switch (event_type) {
 243         case BRCMF_E_START:
 244         case BRCMF_E_DEAUTH:
 245         case BRCMF_E_DISASSOC:
 246                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 247                 break;
 248
 249         case BRCMF_E_ASSOC_IND:
 250         case BRCMF_E_REASSOC_IND:
 251                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 252                 break;
 253
 254         case BRCMF_E_ASSOC:
 255         case BRCMF_E_REASSOC:
 256                 if (status == BRCMF_E_STATUS_SUCCESS)
 257                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, SUCCESS\n",
 258                                   event_name, eabuf);
 259                 else if (status == BRCMF_E_STATUS_TIMEOUT)
 260                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, TIMEOUT\n",
 261                                   event_name, eabuf);
 262                 else if (status == BRCMF_E_STATUS_FAIL)
 263                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, FAILURE, reason %d\n",
 264                                   event_name, eabuf, (int)reason);
 265                 else
 266                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, unexpected status %d\n",
 267                                   event_name, eabuf, (int)status);
 268                 break;
 269
 270         case BRCMF_E_DEAUTH_IND:
 271         case BRCMF_E_DISASSOC_IND:
 272                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, reason %d\n",
 273                           event_name, eabuf, (int)reason);
 274                 break;
 275
 276         case BRCMF_E_AUTH:
 277         case BRCMF_E_AUTH_IND:
 278                 if (auth_type == WLAN_AUTH_OPEN)
 279                         auth_str = "Open System";
 280                 else if (auth_type == WLAN_AUTH_SHARED_KEY)
 281                         auth_str = "Shared Key";
 282                 else {
 283                         sprintf(err_msg, "AUTH unknown: %d", (int)auth_type);
 284                         auth_str = err_msg;
 285                 }
 286                 if (event_type == BRCMF_E_AUTH_IND)
 287                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s\n",
 288                                   event_name, eabuf, auth_str);
 289                 else if (status == BRCMF_E_STATUS_SUCCESS)
 290                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, SUCCESS\n",
 291                                   event_name, eabuf, auth_str);
 292                 else if (status == BRCMF_E_STATUS_TIMEOUT)
 293                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, TIMEOUT\n",
 294                                   event_name, eabuf, auth_str);
 295                 else if (status == BRCMF_E_STATUS_FAIL) {
 296                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, FAILURE, reason %d\n",
 297                                   event_name, eabuf, auth_str, (int)reason);
 298                 }
 299
 300                 break;
 301
 302         case BRCMF_E_JOIN:
 303         case BRCMF_E_ROAM:
 304         case BRCMF_E_SET_SSID:
 305                 if (status == BRCMF_E_STATUS_SUCCESS)
 306                         brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n",
 307                                   event_name, eabuf);
 308                 else if (status == BRCMF_E_STATUS_FAIL)
 309                         brcmf_dbg(EVENT, "MACEVENT: %s, failed\n", event_name);
 310                 else if (status == BRCMF_E_STATUS_NO_NETWORKS)
 311                         brcmf_dbg(EVENT, "MACEVENT: %s, no networks found\n",
 312                                   event_name);
 313                 else
 314                         brcmf_dbg(EVENT, "MACEVENT: %s, unexpected status %d\n",
 315                                   event_name, (int)status);
 316                 break;
 317
 318         case BRCMF_E_BEACON_RX:
 319                 if (status == BRCMF_E_STATUS_SUCCESS)
 320                         brcmf_dbg(EVENT, "MACEVENT: %s, SUCCESS\n", event_name);
 321                 else if (status == BRCMF_E_STATUS_FAIL)
 322                         brcmf_dbg(EVENT, "MACEVENT: %s, FAIL\n", event_name);
 323                 else
 324                         brcmf_dbg(EVENT, "MACEVENT: %s, status %d\n",
 325                                   event_name, status);
 326                 break;
 327
 328         case BRCMF_E_LINK:
 329                 brcmf_dbg(EVENT, "MACEVENT: %s %s\n",
 330                           event_name, link ? "UP" : "DOWN");
 331                 break;
 332
 333         case BRCMF_E_MIC_ERROR:
 334                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, Group %d, Flush %d\n",
 335                           event_name, eabuf, group, flush_txq);
 336                 break;
 337
 338         case BRCMF_E_ICV_ERROR:
 339         case BRCMF_E_UNICAST_DECODE_ERROR:
 340         case BRCMF_E_MULTICAST_DECODE_ERROR:
 341                 brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
 342                 break;
 343
 344         case BRCMF_E_TXFAIL:
 345                 brcmf_dbg(EVENT, "MACEVENT: %s, RA %s\n", event_name, eabuf);
 346                 break;
 347
 348         case BRCMF_E_SCAN_COMPLETE:
 349         case BRCMF_E_PMKID_CACHE:
 350                 brcmf_dbg(EVENT, "MACEVENT: %s\n", event_name);
 351                 break;
 352
 353         case BRCMF_E_PFN_NET_FOUND:
 354         case BRCMF_E_PFN_NET_LOST:
 355         case BRCMF_E_PFN_SCAN_COMPLETE:
 356                 brcmf_dbg(EVENT, "PNOEVENT: %s\n", event_name);
 357                 break;
 358
 359         case BRCMF_E_PSK_SUP:
 360         case BRCMF_E_PRUNE:
 361                 brcmf_dbg(EVENT, "MACEVENT: %s, status %d, reason %d\n",
 362                           event_name, (int)status, (int)reason);
 363                 break;
 364
 365         case BRCMF_E_TRACE:
 366                 buf = (unsigned char *) event_data;
 367                 memcpy(&hdr, buf, sizeof(struct msgtrace_hdr));
 368
 369                 if (hdr.version != MSGTRACE_VERSION) {
 370                         brcmf_dbg(ERROR,
 371                                   "MACEVENT: %s [unsupported version --> brcmf"
 372                                   " version:%d dongle version:%d]\n",
 373                                   event_name, MSGTRACE_VERSION, hdr.version);
 374                         /* Reset datalen to avoid display below */
 375                         datalen = 0;
 376                         break;
 377                 }
 378
 379                 /* There are 2 bytes available at the end of data */
 380                 *(buf + sizeof(struct msgtrace_hdr)
 381                          + be16_to_cpu(hdr.len)) = '\0';
 382
 383                 if (be32_to_cpu(hdr.discarded_bytes)
 384                     || be32_to_cpu(hdr.discarded_printf))
 385                         brcmf_dbg(ERROR,
 386                                   "WLC_E_TRACE: [Discarded traces in dongle -->"
 387                                   " discarded_bytes %d discarded_printf %d]\n",
 388                                   be32_to_cpu(hdr.discarded_bytes),
 389                                   be32_to_cpu(hdr.discarded_printf));
 390
 391                 nblost = be32_to_cpu(hdr.seqnum) - seqnum_prev - 1;
 392                 if (nblost > 0)
 393                         brcmf_dbg(ERROR, "WLC_E_TRACE: [Event lost --> seqnum "
 394                                   " %d nblost %d\n", be32_to_cpu(hdr.seqnum),
 395                                   nblost);
 396                 seqnum_prev = be32_to_cpu(hdr.seqnum);
 397
 398                 /* Display the trace buffer. Advance from \n to \n to
 399                  * avoid display big
 400                  * printf (issue with Linux printk )
 401                  */
 402                 p = (char *)&buf[sizeof(struct msgtrace_hdr)];
 403                 while ((s = strstr(p, "\n")) != NULL) {
 404                         *s = '\0';
 405                         pr_debug("%s\n", p);
 406                         p = s + 1;
 407                 }
 408                 pr_debug("%s\n", p);
 409
 410                 /* Reset datalen to avoid display below */
 411                 datalen = 0;
 412                 break;
 413
 414         case BRCMF_E_RSSI:
 415                 brcmf_dbg(EVENT, "MACEVENT: %s %d\n",
 416                           event_name, be32_to_cpu(*((__be32 *)event_data)));
 417                 break;
 418
 419         default:
 420                 brcmf_dbg(EVENT,
 421                           "MACEVENT: %s %d, MAC %s, status %d, reason %d, "
 422                           "auth %d\n", event_name, event_type, eabuf,
 423                           (int)status, (int)reason, (int)auth_type);
 424                 break;
 425         }
 426
 427         /* show any appended data */
 428         if (datalen) {
 429                 buf = (unsigned char *) event_data;
 430                 brcmf_dbg(EVENT, " data (%d) : ", datalen);
 431                 for (i = 0; i < datalen; i++)
 432                         brcmf_dbg(EVENT, " 0x%02x ", *buf++);
 433                 brcmf_dbg(EVENT, "\n");
 434         }
 435 }
 436 #endif                          /* DEBUG */
 437
 438 int
 439 brcmf_c_host_event(struct brcmf_pub *drvr, int *ifidx, void *pktdata,
 440                    struct brcmf_event_msg *event, void **data_ptr)
 441 {
 442         /* check whether packet is a BRCM event pkt */
 443         struct brcmf_event *pvt_data = (struct brcmf_event *) pktdata;
 444         struct brcmf_if_event *ifevent;
 445         char *event_data;
 446         u32 type, status;
 447         u16 flags;
 448         int evlen;
 449
 450         if (memcmp(BRCM_OUI, &pvt_data->hdr.oui[0], DOT11_OUI_LEN)) {
 451                 brcmf_dbg(ERROR, "mismatched OUI, bailing\n");
 452                 return -EBADE;
 453         }
 454
 455         /* BRCM event pkt may be unaligned - use xxx_ua to load user_subtype. */
 456         if (get_unaligned_be16(&pvt_data->hdr.usr_subtype) !=
 457             BCMILCP_BCM_SUBTYPE_EVENT) {
 458                 brcmf_dbg(ERROR, "mismatched subtype, bailing\n");
 459                 return -EBADE;
 460         }
 461
 462         *data_ptr = &pvt_data[1];
 463         event_data = *data_ptr;
 464
 465         /* memcpy since BRCM event pkt may be unaligned. */
 466         memcpy(event, &pvt_data->msg, sizeof(struct brcmf_event_msg));
 467
 468         type = get_unaligned_be32(&event->event_type);
 469         flags = get_unaligned_be16(&event->flags);
 470         status = get_unaligned_be32(&event->status);
 471         evlen = get_unaligned_be32(&event->datalen) +
 472                 sizeof(struct brcmf_event);
 473
 474         switch (type) {
 475         case BRCMF_E_IF:
 476                 ifevent = (struct brcmf_if_event *) event_data;
 477                 brcmf_dbg(TRACE, "if event\n");
 478
 479                 if (ifevent->ifidx > 0 && ifevent->ifidx < BRCMF_MAX_IFS) {
 480                         if (ifevent->action == BRCMF_E_IF_ADD)
 481                                 brcmf_add_if(drvr->dev, ifevent->ifidx,
 482                                              event->ifname,
 483                                              pvt_data->eth.h_dest);
 484                         else
 485                                 brcmf_del_if(drvr, ifevent->ifidx);
 486                 } else {
 487                         brcmf_dbg(ERROR, "Invalid ifidx %d for %s\n",
 488                                   ifevent->ifidx, event->ifname);
 489                 }
 490
 491                 /* send up the if event: btamp user needs it */
 492                 *ifidx = brcmf_ifname2idx(drvr, event->ifname);
 493                 break;
 494
 495                 /* These are what external supplicant/authenticator wants */
 496         case BRCMF_E_LINK:
 497         case BRCMF_E_ASSOC_IND:
 498         case BRCMF_E_REASSOC_IND:
 499         case BRCMF_E_DISASSOC_IND:
 500         case BRCMF_E_MIC_ERROR:
 501         default:
 502                 /* Fall through: this should get _everything_  */
 503
 504                 *ifidx = brcmf_ifname2idx(drvr, event->ifname);
 505                 brcmf_dbg(TRACE, "MAC event %d, flags %x, status %x\n",
 506                           type, flags, status);
 507
 508                 /* put it back to BRCMF_E_NDIS_LINK */
 509                 if (type == BRCMF_E_NDIS_LINK) {
 510                         u32 temp1;
 511                         __be32 temp2;
 512
 513                         temp1 = get_unaligned_be32(&event->event_type);
 514                         brcmf_dbg(TRACE, "Converted to WLC_E_LINK type %d\n",
 515                                   temp1);
 516
 517                         temp2 = cpu_to_be32(BRCMF_E_NDIS_LINK);
 518                         memcpy((void *)(&pvt_data->msg.event_type), &temp2,
 519                                sizeof(pvt_data->msg.event_type));
 520                 }
 521                 break;
 522         }
 523
 524 #ifdef DEBUG
 525         brcmf_c_show_host_event(event, event_data);
 526 #endif                          /* DEBUG */
 527
 528         return 0;
 529 }
 530
 531 /* Convert user's input in hex pattern to byte-size mask */
 532 static int brcmf_c_pattern_atoh(char *src, char *dst)
 533 {
 534         int i;
 535         if (strncmp(src, "0x", 2) != 0 && strncmp(src, "0X", 2) != 0) {
 536                 brcmf_dbg(ERROR, "Mask invalid format. Needs to start with 0x\n");
 537                 return -EINVAL;
 538         }
 539         src = src + 2;          /* Skip past 0x */
 540         if (strlen(src) % 2 != 0) {
 541                 brcmf_dbg(ERROR, "Mask invalid format. Length must be even.\n");
 542                 return -EINVAL;
 543         }
 544         for (i = 0; *src != '\0'; i++) {
 545                 unsigned long res;
 546                 char num[3];
 547                 strncpy(num, src, 2);
 548                 num[2] = '\0';
 549                 if (kstrtoul(num, 16, &res))
 550                         return -EINVAL;
 551                 dst[i] = (u8)res;
 552                 src += 2;
 553         }
 554         return i;
 555 }
 556
 557 void
 558 brcmf_c_pktfilter_offload_enable(struct brcmf_pub *drvr, char *arg, int enable,
 559                              int master_mode)
 560 {
 561         unsigned long res;
 562         char *argv[8];
 563         int i = 0;
 564         const char *str;
 565         int buf_len;
 566         int str_len;
 567         char *arg_save = NULL, *arg_org = NULL;
 568         int rc;
 569         char buf[128];
 570         struct brcmf_pkt_filter_enable_le enable_parm;
 571         struct brcmf_pkt_filter_enable_le *pkt_filterp;
 572         __le32 mmode_le;
 573
 574         arg_save = kmalloc(strlen(arg) + 1, GFP_ATOMIC);
 575         if (!arg_save)
 576                 goto fail;
 577
 578         arg_org = arg_save;
 579         memcpy(arg_save, arg, strlen(arg) + 1);
 580
 581         argv[i] = strsep(&arg_save, " ");
 582
 583         i = 0;
 584         if (NULL == argv[i]) {
 585                 brcmf_dbg(ERROR, "No args provided\n");
 586                 goto fail;
 587         }
 588
 589         str = "pkt_filter_enable";
 590         str_len = strlen(str);
 591         strncpy(buf, str, str_len);
 592         buf[str_len] = '\0';
 593         buf_len = str_len + 1;
 594
 595         pkt_filterp = (struct brcmf_pkt_filter_enable_le *) (buf + str_len + 1);
 596
 597         /* Parse packet filter id. */
 598         enable_parm.id = 0;
 599         if (!kstrtoul(argv[i], 0, &res))
 600                 enable_parm.id = cpu_to_le32((u32)res);
 601
 602         /* Parse enable/disable value. */
 603         enable_parm.enable = cpu_to_le32(enable);
 604
 605         buf_len += sizeof(enable_parm);
 606         memcpy((char *)pkt_filterp, &enable_parm, sizeof(enable_parm));
 607
 608         /* Enable/disable the specified filter. */
 609         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
 610         rc = rc >= 0 ? 0 : rc;
 611         if (rc)
 612                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 613                           arg, rc);
 614         else
 615                 brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);
 616
 617         /* Contorl the master mode */
 618         mmode_le = cpu_to_le32(master_mode);
 619         brcmf_c_mkiovar("pkt_filter_mode", (char *)&mmode_le, 4, buf,
 620                     sizeof(buf));
 621         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf,
 622                                        sizeof(buf));
 623         rc = rc >= 0 ? 0 : rc;
 624         if (rc)
 625                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 626                           arg, rc);
 627
 628 fail:
 629         kfree(arg_org);
 630 }
 631
 632 void brcmf_c_pktfilter_offload_set(struct brcmf_pub *drvr, char *arg)
 633 {
 634         const char *str;
 635         struct brcmf_pkt_filter_le pkt_filter;
 636         struct brcmf_pkt_filter_le *pkt_filterp;
 637         unsigned long res;
 638         int buf_len;
 639         int str_len;
 640         int rc;
 641         u32 mask_size;
 642         u32 pattern_size;
 643         char *argv[8], *buf = NULL;
 644         int i = 0;
 645         char *arg_save = NULL, *arg_org = NULL;
 646
 647         arg_save = kstrdup(arg, GFP_ATOMIC);
 648         if (!arg_save)
 649                 goto fail;
 650
 651         arg_org = arg_save;
 652
 653         buf = kmalloc(PKTFILTER_BUF_SIZE, GFP_ATOMIC);
 654         if (!buf)
 655                 goto fail;
 656
 657         argv[i] = strsep(&arg_save, " ");
 658         while (argv[i++])
 659                 argv[i] = strsep(&arg_save, " ");
 660
 661         i = 0;
 662         if (NULL == argv[i]) {
 663                 brcmf_dbg(ERROR, "No args provided\n");
 664                 goto fail;
 665         }
 666
 667         str = "pkt_filter_add";
 668         strcpy(buf, str);
 669         str_len = strlen(str);
 670         buf_len = str_len + 1;
 671
 672         pkt_filterp = (struct brcmf_pkt_filter_le *) (buf + str_len + 1);
 673
 674         /* Parse packet filter id. */
 675         pkt_filter.id = 0;
 676         if (!kstrtoul(argv[i], 0, &res))
 677                 pkt_filter.id = cpu_to_le32((u32)res);
 678
 679         if (NULL == argv[++i]) {
 680                 brcmf_dbg(ERROR, "Polarity not provided\n");
 681                 goto fail;
 682         }
 683
 684         /* Parse filter polarity. */
 685         pkt_filter.negate_match = 0;
 686         if (!kstrtoul(argv[i], 0, &res))
 687                 pkt_filter.negate_match = cpu_to_le32((u32)res);
 688
 689         if (NULL == argv[++i]) {
 690                 brcmf_dbg(ERROR, "Filter type not provided\n");
 691                 goto fail;
 692         }
 693
 694         /* Parse filter type. */
 695         pkt_filter.type = 0;
 696         if (!kstrtoul(argv[i], 0, &res))
 697                 pkt_filter.type = cpu_to_le32((u32)res);
 698
 699         if (NULL == argv[++i]) {
 700                 brcmf_dbg(ERROR, "Offset not provided\n");
 701                 goto fail;
 702         }
 703
 704         /* Parse pattern filter offset. */
 705         pkt_filter.u.pattern.offset = 0;
 706         if (!kstrtoul(argv[i], 0, &res))
 707                 pkt_filter.u.pattern.offset = cpu_to_le32((u32)res);
 708
 709         if (NULL == argv[++i]) {
 710                 brcmf_dbg(ERROR, "Bitmask not provided\n");
 711                 goto fail;
 712         }
 713
 714         /* Parse pattern filter mask. */
 715         mask_size =
 716             brcmf_c_pattern_atoh
 717                    (argv[i], (char *)pkt_filterp->u.pattern.mask_and_pattern);
 718
 719         if (NULL == argv[++i]) {
 720                 brcmf_dbg(ERROR, "Pattern not provided\n");
 721                 goto fail;
 722         }
 723
 724         /* Parse pattern filter pattern. */
 725         pattern_size =
 726             brcmf_c_pattern_atoh(argv[i],
 727                                    (char *)&pkt_filterp->u.pattern.
 728                                    mask_and_pattern[mask_size]);
 729
 730         if (mask_size != pattern_size) {
 731                 brcmf_dbg(ERROR, "Mask and pattern not the same size\n");
 732                 goto fail;
 733         }
 734
 735         pkt_filter.u.pattern.size_bytes = cpu_to_le32(mask_size);
 736         buf_len += BRCMF_PKT_FILTER_FIXED_LEN;
 737         buf_len += (BRCMF_PKT_FILTER_PATTERN_FIXED_LEN + 2 * mask_size);
 738
 739         /* Keep-alive attributes are set in local
 740          * variable (keep_alive_pkt), and
 741          ** then memcpy'ed into buffer (keep_alive_pktp) since there is no
 742          ** guarantee that the buffer is properly aligned.
 743          */
 744         memcpy((char *)pkt_filterp,
 745                &pkt_filter,
 746                BRCMF_PKT_FILTER_FIXED_LEN + BRCMF_PKT_FILTER_PATTERN_FIXED_LEN);
 747
 748         rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
 749         rc = rc >= 0 ? 0 : rc;
 750
 751         if (rc)
 752                 brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
 753                           arg, rc);
 754         else
 755                 brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);
 756
 757 fail:
 758         kfree(arg_org);
 759
 760         kfree(buf);
 761 }
 762
 763 static void brcmf_c_arp_offload_set(struct brcmf_pub *drvr, int arp_mode)
 764 {
 765         char iovbuf[32];
 766         int retcode;
 767
 768         brcmf_c_mkiovar("arp_ol", (char *)&arp_mode, 4, iovbuf, sizeof(iovbuf));
 769         retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 770                                    iovbuf, sizeof(iovbuf));
 771         retcode = retcode >= 0 ? 0 : retcode;
 772         if (retcode)
 773                 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, retcode = %d\n",
 774                           arp_mode, retcode);
 775         else
 776                 brcmf_dbg(TRACE, "successfully set ARP offload mode to 0x%x\n",
 777                           arp_mode);
 778 }
 779
 780 static void brcmf_c_arp_offload_enable(struct brcmf_pub *drvr, int arp_enable)
 781 {
 782         char iovbuf[32];
 783         int retcode;
 784
 785         brcmf_c_mkiovar("arpoe", (char *)&arp_enable, 4,
 786                         iovbuf, sizeof(iovbuf));
 787         retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 788                                    iovbuf, sizeof(iovbuf));
 789         retcode = retcode >= 0 ? 0 : retcode;
 790         if (retcode)
 791                 brcmf_dbg(TRACE, "failed to enable ARP offload to %d, retcode = %d\n",
 792                           arp_enable, retcode);
 793         else
 794                 brcmf_dbg(TRACE, "successfully enabled ARP offload to %d\n",
 795                           arp_enable);
 796 }
 797
 798 int brcmf_c_preinit_dcmds(struct brcmf_pub *drvr)
 799 {
 800         char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];      /*  Room for
 801                                  "event_msgs" + '\0' + bitvec  */
 802         char buf[128], *ptr;
 803         u32 roaming = 1;
 804         uint bcn_timeout = 3;
 805         int scan_assoc_time = 40;
 806         int scan_unassoc_time = 40;
 807         int i;
 808         struct brcmf_bus_dcmd *cmdlst;
 809         struct list_head *cur, *q;
 810
 811         mutex_lock(&drvr->proto_block);
 812
 813         /* Set Country code */
 814         if (drvr->country_code[0] != 0) {
 815                 if (brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_COUNTRY,
 816                                               drvr->country_code,
 817                                               sizeof(drvr->country_code)) < 0)
 818                         brcmf_dbg(ERROR, "country code setting failed\n");
 819         }
 820
 821         /* query for 'ver' to get version info from firmware */
 822         memset(buf, 0, sizeof(buf));
 823         ptr = buf;
 824         brcmf_c_mkiovar("ver", NULL, 0, buf, sizeof(buf));
 825         brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, buf, sizeof(buf));
 826         strsep(&ptr, "\n");
 827         /* Print fw version info */
 828         brcmf_dbg(ERROR, "Firmware version = %s\n", buf);
 829
 830         /* Setup timeout if Beacons are lost and roam is off to report
 831                  link down */
 832         brcmf_c_mkiovar("bcn_timeout", (char *)&bcn_timeout, 4, iovbuf,
 833                     sizeof(iovbuf));
 834         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 835                                   sizeof(iovbuf));
 836
 837         /* Enable/Disable build-in roaming to allowed ext supplicant to take
 838                  of romaing */
 839         brcmf_c_mkiovar("roam_off", (char *)&roaming, 4,
 840                       iovbuf, sizeof(iovbuf));
 841         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 842                                   sizeof(iovbuf));
 843
 844         /* Setup event_msgs */
 845         brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
 846                       iovbuf, sizeof(iovbuf));
 847         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
 848                                   sizeof(iovbuf));
 849
 850         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_CHANNEL_TIME,
 851                          (char *)&scan_assoc_time, sizeof(scan_assoc_time));
 852         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_UNASSOC_TIME,
 853                          (char *)&scan_unassoc_time, sizeof(scan_unassoc_time));
 854
 855         /* Set and enable ARP offload feature */
 856         brcmf_c_arp_offload_set(drvr, BRCMF_ARPOL_MODE);
 857         brcmf_c_arp_offload_enable(drvr, true);
 858
 859         /* Set up pkt filter */
 860         for (i = 0; i < drvr->pktfilter_count; i++) {
 861                 brcmf_c_pktfilter_offload_set(drvr, drvr->pktfilter[i]);
 862                 brcmf_c_pktfilter_offload_enable(drvr, drvr->pktfilter[i],
 863                                                  0, true);
 864         }
 865
 866         /* set bus specific command if there is any */
 867         list_for_each_safe(cur, q, &drvr->bus_if->dcmd_list) {
 868                 cmdlst = list_entry(cur, struct brcmf_bus_dcmd, list);
 869                 if (cmdlst->name && cmdlst->param && cmdlst->param_len) {
 870                         brcmf_c_mkiovar(cmdlst->name, cmdlst->param,
 871                                         cmdlst->param_len, iovbuf,
 872                                         sizeof(iovbuf));
 873                         brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
 874                                                  iovbuf, sizeof(iovbuf));
 875                 }
 876                 list_del(cur);
 877                 kfree(cmdlst);
 878         }
 879
 880         mutex_unlock(&drvr->proto_block);
 881
 882         return 0;
 883 }