spi-topcliff-pch: supports a spi mode setup and bit order setup by IO control

[zen-stable.git] / drivers / net / wireless / brcm80211 / brcmfmac / dhd_common.c

/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/sched.h>
#include <linux/netdevice.h>
#include <asm/unaligned.h>
#include <defs.h>
#include <brcmu_wifi.h>
#include <brcmu_utils.h>
#include "dhd.h"
#include "dhd_bus.h"
#include "dhd_proto.h"
#include "dhd_dbg.h"

#define BRCM_OUI                        "\x00\x10\x18"
#define DOT11_OUI_LEN                   3
#define BCMILCP_BCM_SUBTYPE_EVENT       1
#define PKTFILTER_BUF_SIZE              2048
#define BRCMF_ARPOL_MODE                0xb     /* agent|snoop|peer_autoreply */

#define MSGTRACE_VERSION        1

#define BRCMF_PKT_FILTER_FIXED_LEN      offsetof(struct brcmf_pkt_filter_le, u)
#define BRCMF_PKT_FILTER_PATTERN_FIXED_LEN      \
        offsetof(struct brcmf_pkt_filter_pattern_le, mask_and_pattern)

#ifdef BCMDBG
static const char brcmf_version[] =
        "Dongle Host Driver, version " BRCMF_VERSION_STR "\nCompiled on "
        __DATE__ " at " __TIME__;
#else
static const char brcmf_version[] =
        "Dongle Host Driver, version " BRCMF_VERSION_STR;
#endif

/* Message trace header */
struct msgtrace_hdr {
        u8 version;
        u8 spare;
        __be16 len;             /* Len of the trace */
        __be32 seqnum;          /* Sequence number of message. Useful
                                 * if the messsage has been lost
                                 * because of DMA error or a bus reset
                                 * (ex: SDIO Func2)
                                 */
        __be32 discarded_bytes; /* Number of discarded bytes because of
                                 trace overflow  */
        __be32 discarded_printf;        /* Number of discarded printf
                                 because of trace overflow */
} __packed;


uint
brcmf_c_mkiovar(char *name, char *data, uint datalen, char *buf, uint buflen)
{
        uint len;

        len = strlen(name) + 1;

        if ((len + datalen) > buflen)
                return 0;

        strncpy(buf, name, buflen);

        /* append data onto the end of the name string */
        memcpy(&buf[len], data, datalen);
        len += datalen;

        return len;
}

bool brcmf_c_prec_enq(struct device *dev, struct pktq *q,
                      struct sk_buff *pkt, int prec)
{
        struct sk_buff *p;
        int eprec = -1;         /* precedence to evict from */
        bool discard_oldest;
        struct brcmf_bus *bus_if = dev_get_drvdata(dev);
        struct brcmf_pub *drvr = bus_if->drvr;

        /* Fast case, precedence queue is not full and we are also not
         * exceeding total queue length
         */
        if (!pktq_pfull(q, prec) && !pktq_full(q)) {
                brcmu_pktq_penq(q, prec, pkt);
                return true;
        }

        /* Determine precedence from which to evict packet, if any */
        if (pktq_pfull(q, prec))
                eprec = prec;
        else if (pktq_full(q)) {
                p = brcmu_pktq_peek_tail(q, &eprec);
                if (eprec > prec)
                        return false;
        }

        /* Evict if needed */
        if (eprec >= 0) {
                /* Detect queueing to unconfigured precedence */
                discard_oldest = ac_bitmap_tst(drvr->wme_dp, eprec);
                if (eprec == prec && !discard_oldest)
                        return false;   /* refuse newer (incoming) packet */
                /* Evict packet according to discard policy */
                p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) :
                        brcmu_pktq_pdeq_tail(q, eprec);
                if (p == NULL)
                        brcmf_dbg(ERROR, "brcmu_pktq_penq() failed, oldest %d\n",
                                  discard_oldest);

                brcmu_pkt_buf_free_skb(p);
        }

        /* Enqueue */
        p = brcmu_pktq_penq(q, prec, pkt);
        if (p == NULL)
                brcmf_dbg(ERROR, "brcmu_pktq_penq() failed\n");

        return p != NULL;
}

#ifdef BCMDBG
static void
brcmf_c_show_host_event(struct brcmf_event_msg *event, void *event_data)
{
        uint i, status, reason;
        bool group = false, flush_txq = false, link = false;
        char *auth_str, *event_name;
        unsigned char *buf;
        char err_msg[256], eabuf[ETHER_ADDR_STR_LEN];
        static struct {
                uint event;
                char *event_name;
        } event_names[] = {
                {
                BRCMF_E_SET_SSID, "SET_SSID"}, {
                BRCMF_E_JOIN, "JOIN"}, {
                BRCMF_E_START, "START"}, {
                BRCMF_E_AUTH, "AUTH"}, {
                BRCMF_E_AUTH_IND, "AUTH_IND"}, {
                BRCMF_E_DEAUTH, "DEAUTH"}, {
                BRCMF_E_DEAUTH_IND, "DEAUTH_IND"}, {
                BRCMF_E_ASSOC, "ASSOC"}, {
                BRCMF_E_ASSOC_IND, "ASSOC_IND"}, {
                BRCMF_E_REASSOC, "REASSOC"}, {
                BRCMF_E_REASSOC_IND, "REASSOC_IND"}, {
                BRCMF_E_DISASSOC, "DISASSOC"}, {
                BRCMF_E_DISASSOC_IND, "DISASSOC_IND"}, {
                BRCMF_E_QUIET_START, "START_QUIET"}, {
                BRCMF_E_QUIET_END, "END_QUIET"}, {
                BRCMF_E_BEACON_RX, "BEACON_RX"}, {
                BRCMF_E_LINK, "LINK"}, {
                BRCMF_E_MIC_ERROR, "MIC_ERROR"}, {
                BRCMF_E_NDIS_LINK, "NDIS_LINK"}, {
                BRCMF_E_ROAM, "ROAM"}, {
                BRCMF_E_TXFAIL, "TXFAIL"}, {
                BRCMF_E_PMKID_CACHE, "PMKID_CACHE"}, {
                BRCMF_E_RETROGRADE_TSF, "RETROGRADE_TSF"}, {
                BRCMF_E_PRUNE, "PRUNE"}, {
                BRCMF_E_AUTOAUTH, "AUTOAUTH"}, {
                BRCMF_E_EAPOL_MSG, "EAPOL_MSG"}, {
                BRCMF_E_SCAN_COMPLETE, "SCAN_COMPLETE"}, {
                BRCMF_E_ADDTS_IND, "ADDTS_IND"}, {
                BRCMF_E_DELTS_IND, "DELTS_IND"}, {
                BRCMF_E_BCNSENT_IND, "BCNSENT_IND"}, {
                BRCMF_E_BCNRX_MSG, "BCNRX_MSG"}, {
                BRCMF_E_BCNLOST_MSG, "BCNLOST_MSG"}, {
                BRCMF_E_ROAM_PREP, "ROAM_PREP"}, {
                BRCMF_E_PFN_NET_FOUND, "PNO_NET_FOUND"}, {
                BRCMF_E_PFN_NET_LOST, "PNO_NET_LOST"}, {
                BRCMF_E_RESET_COMPLETE, "RESET_COMPLETE"}, {
                BRCMF_E_JOIN_START, "JOIN_START"}, {
                BRCMF_E_ROAM_START, "ROAM_START"}, {
                BRCMF_E_ASSOC_START, "ASSOC_START"}, {
                BRCMF_E_IBSS_ASSOC, "IBSS_ASSOC"}, {
                BRCMF_E_RADIO, "RADIO"}, {
                BRCMF_E_PSM_WATCHDOG, "PSM_WATCHDOG"}, {
                BRCMF_E_PROBREQ_MSG, "PROBREQ_MSG"}, {
                BRCMF_E_SCAN_CONFIRM_IND, "SCAN_CONFIRM_IND"}, {
                BRCMF_E_PSK_SUP, "PSK_SUP"}, {
                BRCMF_E_COUNTRY_CODE_CHANGED, "COUNTRY_CODE_CHANGED"}, {
                BRCMF_E_EXCEEDED_MEDIUM_TIME, "EXCEEDED_MEDIUM_TIME"}, {
                BRCMF_E_ICV_ERROR, "ICV_ERROR"}, {
                BRCMF_E_UNICAST_DECODE_ERROR, "UNICAST_DECODE_ERROR"}, {
                BRCMF_E_MULTICAST_DECODE_ERROR, "MULTICAST_DECODE_ERROR"}, {
                BRCMF_E_TRACE, "TRACE"}, {
                BRCMF_E_ACTION_FRAME, "ACTION FRAME"}, {
                BRCMF_E_ACTION_FRAME_COMPLETE, "ACTION FRAME TX COMPLETE"}, {
                BRCMF_E_IF, "IF"}, {
                BRCMF_E_RSSI, "RSSI"}, {
                BRCMF_E_PFN_SCAN_COMPLETE, "SCAN_COMPLETE"}
        };
        uint event_type, flags, auth_type, datalen;
        static u32 seqnum_prev;
        struct msgtrace_hdr hdr;
        u32 nblost;
        char *s, *p;

        event_type = be32_to_cpu(event->event_type);
        flags = be16_to_cpu(event->flags);
        status = be32_to_cpu(event->status);
        reason = be32_to_cpu(event->reason);
        auth_type = be32_to_cpu(event->auth_type);
        datalen = be32_to_cpu(event->datalen);
        /* debug dump of event messages */
        sprintf(eabuf, "%pM", event->addr);

        event_name = "UNKNOWN";
        for (i = 0; i < ARRAY_SIZE(event_names); i++) {
                if (event_names[i].event == event_type)
                        event_name = event_names[i].event_name;
        }

        brcmf_dbg(EVENT, "EVENT: %s, event ID = %d\n", event_name, event_type);
        brcmf_dbg(EVENT, "flags 0x%04x, status %d, reason %d, auth_type %d MAC %s\n",
                  flags, status, reason, auth_type, eabuf);

        if (flags & BRCMF_EVENT_MSG_LINK)
                link = true;
        if (flags & BRCMF_EVENT_MSG_GROUP)
                group = true;
        if (flags & BRCMF_EVENT_MSG_FLUSHTXQ)
                flush_txq = true;

        switch (event_type) {
        case BRCMF_E_START:
        case BRCMF_E_DEAUTH:
        case BRCMF_E_DISASSOC:
                brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
                break;

        case BRCMF_E_ASSOC_IND:
        case BRCMF_E_REASSOC_IND:
                brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
                break;

        case BRCMF_E_ASSOC:
        case BRCMF_E_REASSOC:
                if (status == BRCMF_E_STATUS_SUCCESS)
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, SUCCESS\n",
                                  event_name, eabuf);
                else if (status == BRCMF_E_STATUS_TIMEOUT)
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, TIMEOUT\n",
                                  event_name, eabuf);
                else if (status == BRCMF_E_STATUS_FAIL)
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, FAILURE, reason %d\n",
                                  event_name, eabuf, (int)reason);
                else
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, unexpected status %d\n",
                                  event_name, eabuf, (int)status);
                break;

        case BRCMF_E_DEAUTH_IND:
        case BRCMF_E_DISASSOC_IND:
                brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, reason %d\n",
                          event_name, eabuf, (int)reason);
                break;

        case BRCMF_E_AUTH:
        case BRCMF_E_AUTH_IND:
                if (auth_type == WLAN_AUTH_OPEN)
                        auth_str = "Open System";
                else if (auth_type == WLAN_AUTH_SHARED_KEY)
                        auth_str = "Shared Key";
                else {
                        sprintf(err_msg, "AUTH unknown: %d", (int)auth_type);
                        auth_str = err_msg;
                }
                if (event_type == BRCMF_E_AUTH_IND)
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s\n",
                                  event_name, eabuf, auth_str);
                else if (status == BRCMF_E_STATUS_SUCCESS)
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, SUCCESS\n",
                                  event_name, eabuf, auth_str);
                else if (status == BRCMF_E_STATUS_TIMEOUT)
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, TIMEOUT\n",
                                  event_name, eabuf, auth_str);
                else if (status == BRCMF_E_STATUS_FAIL) {
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, %s, FAILURE, reason %d\n",
                                  event_name, eabuf, auth_str, (int)reason);
                }

                break;

        case BRCMF_E_JOIN:
        case BRCMF_E_ROAM:
        case BRCMF_E_SET_SSID:
                if (status == BRCMF_E_STATUS_SUCCESS)
                        brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n",
                                  event_name, eabuf);
                else if (status == BRCMF_E_STATUS_FAIL)
                        brcmf_dbg(EVENT, "MACEVENT: %s, failed\n", event_name);
                else if (status == BRCMF_E_STATUS_NO_NETWORKS)
                        brcmf_dbg(EVENT, "MACEVENT: %s, no networks found\n",
                                  event_name);
                else
                        brcmf_dbg(EVENT, "MACEVENT: %s, unexpected status %d\n",
                                  event_name, (int)status);
                break;

        case BRCMF_E_BEACON_RX:
                if (status == BRCMF_E_STATUS_SUCCESS)
                        brcmf_dbg(EVENT, "MACEVENT: %s, SUCCESS\n", event_name);
                else if (status == BRCMF_E_STATUS_FAIL)
                        brcmf_dbg(EVENT, "MACEVENT: %s, FAIL\n", event_name);
                else
                        brcmf_dbg(EVENT, "MACEVENT: %s, status %d\n",
                                  event_name, status);
                break;

        case BRCMF_E_LINK:
                brcmf_dbg(EVENT, "MACEVENT: %s %s\n",
                          event_name, link ? "UP" : "DOWN");
                break;

        case BRCMF_E_MIC_ERROR:
                brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s, Group %d, Flush %d\n",
                          event_name, eabuf, group, flush_txq);
                break;

        case BRCMF_E_ICV_ERROR:
        case BRCMF_E_UNICAST_DECODE_ERROR:
        case BRCMF_E_MULTICAST_DECODE_ERROR:
                brcmf_dbg(EVENT, "MACEVENT: %s, MAC %s\n", event_name, eabuf);
                break;

        case BRCMF_E_TXFAIL:
                brcmf_dbg(EVENT, "MACEVENT: %s, RA %s\n", event_name, eabuf);
                break;

        case BRCMF_E_SCAN_COMPLETE:
        case BRCMF_E_PMKID_CACHE:
                brcmf_dbg(EVENT, "MACEVENT: %s\n", event_name);
                break;

        case BRCMF_E_PFN_NET_FOUND:
        case BRCMF_E_PFN_NET_LOST:
        case BRCMF_E_PFN_SCAN_COMPLETE:
                brcmf_dbg(EVENT, "PNOEVENT: %s\n", event_name);
                break;

        case BRCMF_E_PSK_SUP:
        case BRCMF_E_PRUNE:
                brcmf_dbg(EVENT, "MACEVENT: %s, status %d, reason %d\n",
                          event_name, (int)status, (int)reason);
                break;

        case BRCMF_E_TRACE:
                buf = (unsigned char *) event_data;
                memcpy(&hdr, buf, sizeof(struct msgtrace_hdr));

                if (hdr.version != MSGTRACE_VERSION) {
                        brcmf_dbg(ERROR,
                                  "MACEVENT: %s [unsupported version --> brcmf"
                                  " version:%d dongle version:%d]\n",
                                  event_name, MSGTRACE_VERSION, hdr.version);
                        /* Reset datalen to avoid display below */
                        datalen = 0;
                        break;
                }

                /* There are 2 bytes available at the end of data */
                *(buf + sizeof(struct msgtrace_hdr)
                         + be16_to_cpu(hdr.len)) = '\0';

                if (be32_to_cpu(hdr.discarded_bytes)
                    || be32_to_cpu(hdr.discarded_printf))
                        brcmf_dbg(ERROR,
                                  "WLC_E_TRACE: [Discarded traces in dongle -->"
                                  " discarded_bytes %d discarded_printf %d]\n",
                                  be32_to_cpu(hdr.discarded_bytes),
                                  be32_to_cpu(hdr.discarded_printf));

                nblost = be32_to_cpu(hdr.seqnum) - seqnum_prev - 1;
                if (nblost > 0)
                        brcmf_dbg(ERROR, "WLC_E_TRACE: [Event lost --> seqnum "
                                  " %d nblost %d\n", be32_to_cpu(hdr.seqnum),
                                  nblost);
                seqnum_prev = be32_to_cpu(hdr.seqnum);

                /* Display the trace buffer. Advance from \n to \n to
                 * avoid display big
                 * printf (issue with Linux printk )
                 */
                p = (char *)&buf[sizeof(struct msgtrace_hdr)];
                while ((s = strstr(p, "\n")) != NULL) {
                        *s = '\0';
                        printk(KERN_DEBUG"%s\n", p);
                        p = s + 1;
                }
                printk(KERN_DEBUG "%s\n", p);

                /* Reset datalen to avoid display below */
                datalen = 0;
                break;

        case BRCMF_E_RSSI:
                brcmf_dbg(EVENT, "MACEVENT: %s %d\n",
                          event_name, be32_to_cpu(*((__be32 *)event_data)));
                break;

        default:
                brcmf_dbg(EVENT,
                          "MACEVENT: %s %d, MAC %s, status %d, reason %d, "
                          "auth %d\n", event_name, event_type, eabuf,
                          (int)status, (int)reason, (int)auth_type);
                break;
        }

        /* show any appended data */
        if (datalen) {
                buf = (unsigned char *) event_data;
                brcmf_dbg(EVENT, " data (%d) : ", datalen);
                for (i = 0; i < datalen; i++)
                        brcmf_dbg(EVENT, " 0x%02x ", *buf++);
                brcmf_dbg(EVENT, "\n");
        }
}
#endif                          /* BCMDBG */

int
brcmf_c_host_event(struct brcmf_pub *drvr, int *ifidx, void *pktdata,
                   struct brcmf_event_msg *event, void **data_ptr)
{
        /* check whether packet is a BRCM event pkt */
        struct brcmf_event *pvt_data = (struct brcmf_event *) pktdata;
        struct brcmf_if_event *ifevent;
        char *event_data;
        u32 type, status;
        u16 flags;
        int evlen;

        if (memcmp(BRCM_OUI, &pvt_data->hdr.oui[0], DOT11_OUI_LEN)) {
                brcmf_dbg(ERROR, "mismatched OUI, bailing\n");
                return -EBADE;
        }

        /* BRCM event pkt may be unaligned - use xxx_ua to load user_subtype. */
        if (get_unaligned_be16(&pvt_data->hdr.usr_subtype) !=
            BCMILCP_BCM_SUBTYPE_EVENT) {
                brcmf_dbg(ERROR, "mismatched subtype, bailing\n");
                return -EBADE;
        }

        *data_ptr = &pvt_data[1];
        event_data = *data_ptr;

        /* memcpy since BRCM event pkt may be unaligned. */
        memcpy(event, &pvt_data->msg, sizeof(struct brcmf_event_msg));

        type = get_unaligned_be32(&event->event_type);
        flags = get_unaligned_be16(&event->flags);
        status = get_unaligned_be32(&event->status);
        evlen = get_unaligned_be32(&event->datalen) +
                sizeof(struct brcmf_event);

        switch (type) {
        case BRCMF_E_IF:
                ifevent = (struct brcmf_if_event *) event_data;
                brcmf_dbg(TRACE, "if event\n");

                if (ifevent->ifidx > 0 && ifevent->ifidx < BRCMF_MAX_IFS) {
                        if (ifevent->action == BRCMF_E_IF_ADD)
                                brcmf_add_if(drvr->dev, ifevent->ifidx,
                                             event->ifname,
                                             pvt_data->eth.h_dest);
                        else
                                brcmf_del_if(drvr, ifevent->ifidx);
                } else {
                        brcmf_dbg(ERROR, "Invalid ifidx %d for %s\n",
                                  ifevent->ifidx, event->ifname);
                }

                /* send up the if event: btamp user needs it */
                *ifidx = brcmf_ifname2idx(drvr, event->ifname);
                break;

                /* These are what external supplicant/authenticator wants */
        case BRCMF_E_LINK:
        case BRCMF_E_ASSOC_IND:
        case BRCMF_E_REASSOC_IND:
        case BRCMF_E_DISASSOC_IND:
        case BRCMF_E_MIC_ERROR:
        default:
                /* Fall through: this should get _everything_  */

                *ifidx = brcmf_ifname2idx(drvr, event->ifname);
                brcmf_dbg(TRACE, "MAC event %d, flags %x, status %x\n",
                          type, flags, status);

                /* put it back to BRCMF_E_NDIS_LINK */
                if (type == BRCMF_E_NDIS_LINK) {
                        u32 temp1;
                        __be32 temp2;

                        temp1 = get_unaligned_be32(&event->event_type);
                        brcmf_dbg(TRACE, "Converted to WLC_E_LINK type %d\n",
                                  temp1);

                        temp2 = cpu_to_be32(BRCMF_E_NDIS_LINK);
                        memcpy((void *)(&pvt_data->msg.event_type), &temp2,
                               sizeof(pvt_data->msg.event_type));
                }
                break;
        }

#ifdef BCMDBG
        brcmf_c_show_host_event(event, event_data);
#endif                          /* BCMDBG */

        return 0;
}

/* Convert user's input in hex pattern to byte-size mask */
static int brcmf_c_pattern_atoh(char *src, char *dst)
{
        int i;
        if (strncmp(src, "0x", 2) != 0 && strncmp(src, "0X", 2) != 0) {
                brcmf_dbg(ERROR, "Mask invalid format. Needs to start with 0x\n");
                return -EINVAL;
        }
        src = src + 2;          /* Skip past 0x */
        if (strlen(src) % 2 != 0) {
                brcmf_dbg(ERROR, "Mask invalid format. Length must be even.\n");
                return -EINVAL;
        }
        for (i = 0; *src != '\0'; i++) {
                unsigned long res;
                char num[3];
                strncpy(num, src, 2);
                num[2] = '\0';
                if (kstrtoul(num, 16, &res))
                        return -EINVAL;
                dst[i] = (u8)res;
                src += 2;
        }
        return i;
}

void
brcmf_c_pktfilter_offload_enable(struct brcmf_pub *drvr, char *arg, int enable,
                             int master_mode)
{
        unsigned long res;
        char *argv[8];
        int i = 0;
        const char *str;
        int buf_len;
        int str_len;
        char *arg_save = NULL, *arg_org = NULL;
        int rc;
        char buf[128];
        struct brcmf_pkt_filter_enable_le enable_parm;
        struct brcmf_pkt_filter_enable_le *pkt_filterp;
        __le32 mmode_le;

        arg_save = kmalloc(strlen(arg) + 1, GFP_ATOMIC);
        if (!arg_save)
                goto fail;

        arg_org = arg_save;
        memcpy(arg_save, arg, strlen(arg) + 1);

        argv[i] = strsep(&arg_save, " ");

        i = 0;
        if (NULL == argv[i]) {
                brcmf_dbg(ERROR, "No args provided\n");
                goto fail;
        }

        str = "pkt_filter_enable";
        str_len = strlen(str);
        strncpy(buf, str, str_len);
        buf[str_len] = '\0';
        buf_len = str_len + 1;

        pkt_filterp = (struct brcmf_pkt_filter_enable_le *) (buf + str_len + 1);

        /* Parse packet filter id. */
        enable_parm.id = 0;
        if (!kstrtoul(argv[i], 0, &res))
                enable_parm.id = cpu_to_le32((u32)res);

        /* Parse enable/disable value. */
        enable_parm.enable = cpu_to_le32(enable);

        buf_len += sizeof(enable_parm);
        memcpy((char *)pkt_filterp, &enable_parm, sizeof(enable_parm));

        /* Enable/disable the specified filter. */
        rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
        rc = rc >= 0 ? 0 : rc;
        if (rc)
                brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
                          arg, rc);
        else
                brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);

        /* Contorl the master mode */
        mmode_le = cpu_to_le32(master_mode);
        brcmf_c_mkiovar("pkt_filter_mode", (char *)&mmode_le, 4, buf,
                    sizeof(buf));
        rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf,
                                       sizeof(buf));
        rc = rc >= 0 ? 0 : rc;
        if (rc)
                brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
                          arg, rc);

fail:
        kfree(arg_org);
}

void brcmf_c_pktfilter_offload_set(struct brcmf_pub *drvr, char *arg)
{
        const char *str;
        struct brcmf_pkt_filter_le pkt_filter;
        struct brcmf_pkt_filter_le *pkt_filterp;
        unsigned long res;
        int buf_len;
        int str_len;
        int rc;
        u32 mask_size;
        u32 pattern_size;
        char *argv[8], *buf = NULL;
        int i = 0;
        char *arg_save = NULL, *arg_org = NULL;

        arg_save = kstrdup(arg, GFP_ATOMIC);
        if (!arg_save)
                goto fail;

        arg_org = arg_save;

        buf = kmalloc(PKTFILTER_BUF_SIZE, GFP_ATOMIC);
        if (!buf)
                goto fail;

        argv[i] = strsep(&arg_save, " ");
        while (argv[i++])
                argv[i] = strsep(&arg_save, " ");

        i = 0;
        if (NULL == argv[i]) {
                brcmf_dbg(ERROR, "No args provided\n");
                goto fail;
        }

        str = "pkt_filter_add";
        strcpy(buf, str);
        str_len = strlen(str);
        buf_len = str_len + 1;

        pkt_filterp = (struct brcmf_pkt_filter_le *) (buf + str_len + 1);

        /* Parse packet filter id. */
        pkt_filter.id = 0;
        if (!kstrtoul(argv[i], 0, &res))
                pkt_filter.id = cpu_to_le32((u32)res);

        if (NULL == argv[++i]) {
                brcmf_dbg(ERROR, "Polarity not provided\n");
                goto fail;
        }

        /* Parse filter polarity. */
        pkt_filter.negate_match = 0;
        if (!kstrtoul(argv[i], 0, &res))
                pkt_filter.negate_match = cpu_to_le32((u32)res);

        if (NULL == argv[++i]) {
                brcmf_dbg(ERROR, "Filter type not provided\n");
                goto fail;
        }

        /* Parse filter type. */
        pkt_filter.type = 0;
        if (!kstrtoul(argv[i], 0, &res))
                pkt_filter.type = cpu_to_le32((u32)res);

        if (NULL == argv[++i]) {
                brcmf_dbg(ERROR, "Offset not provided\n");
                goto fail;
        }

        /* Parse pattern filter offset. */
        pkt_filter.u.pattern.offset = 0;
        if (!kstrtoul(argv[i], 0, &res))
                pkt_filter.u.pattern.offset = cpu_to_le32((u32)res);

        if (NULL == argv[++i]) {
                brcmf_dbg(ERROR, "Bitmask not provided\n");
                goto fail;
        }

        /* Parse pattern filter mask. */
        mask_size =
            brcmf_c_pattern_atoh
                   (argv[i], (char *)pkt_filterp->u.pattern.mask_and_pattern);

        if (NULL == argv[++i]) {
                brcmf_dbg(ERROR, "Pattern not provided\n");
                goto fail;
        }

        /* Parse pattern filter pattern. */
        pattern_size =
            brcmf_c_pattern_atoh(argv[i],
                                   (char *)&pkt_filterp->u.pattern.
                                   mask_and_pattern[mask_size]);

        if (mask_size != pattern_size) {
                brcmf_dbg(ERROR, "Mask and pattern not the same size\n");
                goto fail;
        }

        pkt_filter.u.pattern.size_bytes = cpu_to_le32(mask_size);
        buf_len += BRCMF_PKT_FILTER_FIXED_LEN;
        buf_len += (BRCMF_PKT_FILTER_PATTERN_FIXED_LEN + 2 * mask_size);

        /* Keep-alive attributes are set in local
         * variable (keep_alive_pkt), and
         ** then memcpy'ed into buffer (keep_alive_pktp) since there is no
         ** guarantee that the buffer is properly aligned.
         */
        memcpy((char *)pkt_filterp,
               &pkt_filter,
               BRCMF_PKT_FILTER_FIXED_LEN + BRCMF_PKT_FILTER_PATTERN_FIXED_LEN);

        rc = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, buf, buf_len);
        rc = rc >= 0 ? 0 : rc;

        if (rc)
                brcmf_dbg(TRACE, "failed to add pktfilter %s, retcode = %d\n",
                          arg, rc);
        else
                brcmf_dbg(TRACE, "successfully added pktfilter %s\n", arg);

fail:
        kfree(arg_org);

        kfree(buf);
}

static void brcmf_c_arp_offload_set(struct brcmf_pub *drvr, int arp_mode)
{
        char iovbuf[32];
        int retcode;

        brcmf_c_mkiovar("arp_ol", (char *)&arp_mode, 4, iovbuf, sizeof(iovbuf));
        retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
                                   iovbuf, sizeof(iovbuf));
        retcode = retcode >= 0 ? 0 : retcode;
        if (retcode)
                brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, retcode = %d\n",
                          arp_mode, retcode);
        else
                brcmf_dbg(TRACE, "successfully set ARP offload mode to 0x%x\n",
                          arp_mode);
}

static void brcmf_c_arp_offload_enable(struct brcmf_pub *drvr, int arp_enable)
{
        char iovbuf[32];
        int retcode;

        brcmf_c_mkiovar("arpoe", (char *)&arp_enable, 4,
                        iovbuf, sizeof(iovbuf));
        retcode = brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR,
                                   iovbuf, sizeof(iovbuf));
        retcode = retcode >= 0 ? 0 : retcode;
        if (retcode)
                brcmf_dbg(TRACE, "failed to enable ARP offload to %d, retcode = %d\n",
                          arp_enable, retcode);
        else
                brcmf_dbg(TRACE, "successfully enabled ARP offload to %d\n",
                          arp_enable);
}

int brcmf_c_preinit_dcmds(struct brcmf_pub *drvr)
{
        char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];      /*  Room for
                                 "event_msgs" + '\0' + bitvec  */
        uint up = 0;
        char buf[128], *ptr;
        u32 dongle_align = drvr->bus_if->align;
        u32 glom = 0;
        u32 roaming = 1;
        uint bcn_timeout = 3;
        int scan_assoc_time = 40;
        int scan_unassoc_time = 40;
        int i;

        mutex_lock(&drvr->proto_block);

        /* Set Country code */
        if (drvr->country_code[0] != 0) {
                if (brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_COUNTRY,
                                              drvr->country_code,
                                              sizeof(drvr->country_code)) < 0)
                        brcmf_dbg(ERROR, "country code setting failed\n");
        }

        /* query for 'ver' to get version info from firmware */
        memset(buf, 0, sizeof(buf));
        ptr = buf;
        brcmf_c_mkiovar("ver", NULL, 0, buf, sizeof(buf));
        brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, buf, sizeof(buf));
        strsep(&ptr, "\n");
        /* Print fw version info */
        brcmf_dbg(ERROR, "Firmware version = %s\n", buf);

        /* Match Host and Dongle rx alignment */
        brcmf_c_mkiovar("bus:txglomalign", (char *)&dongle_align, 4, iovbuf,
                    sizeof(iovbuf));
        brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
                                  sizeof(iovbuf));

        /* disable glom option per default */
        brcmf_c_mkiovar("bus:txglom", (char *)&glom, 4, iovbuf, sizeof(iovbuf));
        brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
                                  sizeof(iovbuf));

        /* Setup timeout if Beacons are lost and roam is off to report
                 link down */
        brcmf_c_mkiovar("bcn_timeout", (char *)&bcn_timeout, 4, iovbuf,
                    sizeof(iovbuf));
        brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
                                  sizeof(iovbuf));

        /* Enable/Disable build-in roaming to allowed ext supplicant to take
                 of romaing */
        brcmf_c_mkiovar("roam_off", (char *)&roaming, 4,
                      iovbuf, sizeof(iovbuf));
        brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
                                  sizeof(iovbuf));

        /* Force STA UP */
        brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_UP, (char *)&up, sizeof(up));

        /* Setup event_msgs */
        brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
                      iovbuf, sizeof(iovbuf));
        brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_VAR, iovbuf,
                                  sizeof(iovbuf));

        brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_CHANNEL_TIME,
                         (char *)&scan_assoc_time, sizeof(scan_assoc_time));
        brcmf_proto_cdc_set_dcmd(drvr, 0, BRCMF_C_SET_SCAN_UNASSOC_TIME,
                         (char *)&scan_unassoc_time, sizeof(scan_unassoc_time));

        /* Set and enable ARP offload feature */
        brcmf_c_arp_offload_set(drvr, BRCMF_ARPOL_MODE);
        brcmf_c_arp_offload_enable(drvr, true);

        /* Set up pkt filter */
        for (i = 0; i < drvr->pktfilter_count; i++) {
                brcmf_c_pktfilter_offload_set(drvr, drvr->pktfilter[i]);
                brcmf_c_pktfilter_offload_enable(drvr, drvr->pktfilter[i],
                                                 0, true);
        }

        mutex_unlock(&drvr->proto_block);

        return 0;
}