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