cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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testmode.c (2779B)

      1/*
      2 * Copyright (c) 2010-2011 Atheros Communications Inc.
      3 * Copyright (c) 2011 Qualcomm Atheros, Inc.
      4 *
      5 * Permission to use, copy, modify, and/or distribute this software for any
      6 * purpose with or without fee is hereby granted, provided that the above
      7 * copyright notice and this permission notice appear in all copies.
      8 *
      9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     16 */
     17
     18#include "testmode.h"
     19#include "debug.h"
     20
     21#include <net/netlink.h>
     22
     23enum ath6kl_tm_attr {
     24	__ATH6KL_TM_ATTR_INVALID	= 0,
     25	ATH6KL_TM_ATTR_CMD		= 1,
     26	ATH6KL_TM_ATTR_DATA		= 2,
     27
     28	/* keep last */
     29	__ATH6KL_TM_ATTR_AFTER_LAST,
     30	ATH6KL_TM_ATTR_MAX		= __ATH6KL_TM_ATTR_AFTER_LAST - 1,
     31};
     32
     33enum ath6kl_tm_cmd {
     34	ATH6KL_TM_CMD_TCMD		= 0,
     35	ATH6KL_TM_CMD_RX_REPORT		= 1,	/* not used anymore */
     36};
     37
     38#define ATH6KL_TM_DATA_MAX_LEN		5000
     39
     40static const struct nla_policy ath6kl_tm_policy[ATH6KL_TM_ATTR_MAX + 1] = {
     41	[ATH6KL_TM_ATTR_CMD]		= { .type = NLA_U32 },
     42	[ATH6KL_TM_ATTR_DATA]		= { .type = NLA_BINARY,
     43					    .len = ATH6KL_TM_DATA_MAX_LEN },
     44};
     45
     46void ath6kl_tm_rx_event(struct ath6kl *ar, void *buf, size_t buf_len)
     47{
     48	struct sk_buff *skb;
     49
     50	if (!buf || buf_len == 0)
     51		return;
     52
     53	skb = cfg80211_testmode_alloc_event_skb(ar->wiphy, buf_len, GFP_KERNEL);
     54	if (!skb) {
     55		ath6kl_warn("failed to allocate testmode rx skb!\n");
     56		return;
     57	}
     58	if (nla_put_u32(skb, ATH6KL_TM_ATTR_CMD, ATH6KL_TM_CMD_TCMD) ||
     59	    nla_put(skb, ATH6KL_TM_ATTR_DATA, buf_len, buf))
     60		goto nla_put_failure;
     61	cfg80211_testmode_event(skb, GFP_KERNEL);
     62	return;
     63
     64nla_put_failure:
     65	kfree_skb(skb);
     66	ath6kl_warn("nla_put failed on testmode rx skb!\n");
     67}
     68
     69int ath6kl_tm_cmd(struct wiphy *wiphy, struct wireless_dev *wdev,
     70		  void *data, int len)
     71{
     72	struct ath6kl *ar = wiphy_priv(wiphy);
     73	struct nlattr *tb[ATH6KL_TM_ATTR_MAX + 1];
     74	int err, buf_len;
     75	void *buf;
     76
     77	err = nla_parse_deprecated(tb, ATH6KL_TM_ATTR_MAX, data, len,
     78				   ath6kl_tm_policy, NULL);
     79	if (err)
     80		return err;
     81
     82	if (!tb[ATH6KL_TM_ATTR_CMD])
     83		return -EINVAL;
     84
     85	switch (nla_get_u32(tb[ATH6KL_TM_ATTR_CMD])) {
     86	case ATH6KL_TM_CMD_TCMD:
     87		if (!tb[ATH6KL_TM_ATTR_DATA])
     88			return -EINVAL;
     89
     90		buf = nla_data(tb[ATH6KL_TM_ATTR_DATA]);
     91		buf_len = nla_len(tb[ATH6KL_TM_ATTR_DATA]);
     92
     93		ath6kl_wmi_test_cmd(ar->wmi, buf, buf_len);
     94
     95		return 0;
     96
     97	case ATH6KL_TM_CMD_RX_REPORT:
     98	default:
     99		return -EOPNOTSUPP;
    100	}
    101}