testmode.c

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/*
 * Copyright (c) 2010-2011 Atheros Communications Inc.
 * Copyright (c) 2011 Qualcomm Atheros, Inc.
 *
 * 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 "testmode.h"
#include "debug.h"

#include <net/netlink.h>

enum ath6kl_tm_attr {
    __ATH6KL_TM_ATTR_INVALID    = 0,
    ATH6KL_TM_ATTR_CMD      = 1,
    ATH6KL_TM_ATTR_DATA     = 2,

    /* keep last */
    __ATH6KL_TM_ATTR_AFTER_LAST,
    ATH6KL_TM_ATTR_MAX      = __ATH6KL_TM_ATTR_AFTER_LAST - 1,
};

enum ath6kl_tm_cmd {
    ATH6KL_TM_CMD_TCMD      = 0,
    ATH6KL_TM_CMD_RX_REPORT     = 1,    /* not used anymore */
};

#define ATH6KL_TM_DATA_MAX_LEN      5000

static const struct nla_policy ath6kl_tm_policy[ATH6KL_TM_ATTR_MAX + 1] = {
    [ATH6KL_TM_ATTR_CMD]        = { .type = NLA_U32 },
    [ATH6KL_TM_ATTR_DATA]       = { .type = NLA_BINARY,
                        .len = ATH6KL_TM_DATA_MAX_LEN },
};

void ath6kl_tm_rx_event(struct ath6kl *ar, void *buf, size_t buf_len)
{
    struct sk_buff *skb;

    if (!buf || buf_len == 0)
        return;

    skb = cfg80211_testmode_alloc_event_skb(ar->wiphy, buf_len, GFP_KERNEL);
    if (!skb) {
        ath6kl_warn("failed to allocate testmode rx skb!\n");
        return;
    }
    if (nla_put_u32(skb, ATH6KL_TM_ATTR_CMD, ATH6KL_TM_CMD_TCMD) ||
        nla_put(skb, ATH6KL_TM_ATTR_DATA, buf_len, buf))
        goto nla_put_failure;
    cfg80211_testmode_event(skb, GFP_KERNEL);
    return;

nla_put_failure:
    kfree_skb(skb);
    ath6kl_warn("nla_put failed on testmode rx skb!\n");
}

int ath6kl_tm_cmd(struct wiphy *wiphy, void *data, int len)
{
    struct ath6kl *ar = wiphy_priv(wiphy);
    struct nlattr *tb[ATH6KL_TM_ATTR_MAX + 1];
    int err, buf_len;
    void *buf;

    err = nla_parse(tb, ATH6KL_TM_ATTR_MAX, data, len,
            ath6kl_tm_policy);
    if (err)
        return err;

    if (!tb[ATH6KL_TM_ATTR_CMD])
        return -EINVAL;

    switch (nla_get_u32(tb[ATH6KL_TM_ATTR_CMD])) {
    case ATH6KL_TM_CMD_TCMD:
        if (!tb[ATH6KL_TM_ATTR_DATA])
            return -EINVAL;

        buf = nla_data(tb[ATH6KL_TM_ATTR_DATA]);
        buf_len = nla_len(tb[ATH6KL_TM_ATTR_DATA]);

        ath6kl_wmi_test_cmd(ar->wmi, buf, buf_len);

        return 0;

        break;
    case ATH6KL_TM_CMD_RX_REPORT:
    default:
        return -EOPNOTSUPP;
    }
}