ath6kl: add testmode support

This is port from the staging version of ath6kl. The interface to user space
is exactly same.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath6kl/testmode.c

@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2010-2011 Atheros Communications 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 <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,
+};
+
+#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_report_event(struct ath6kl *ar, void *buf, size_t buf_len)
+{
+	if (down_interruptible(&ar->sem))
+		return;
+
+	kfree(ar->tm.rx_report);
+
+	ar->tm.rx_report = kmemdup(buf, buf_len, GFP_KERNEL);
+	ar->tm.rx_report_len = buf_len;
+
+	up(&ar->sem);
+
+	wake_up(&ar->event_wq);
+}
+
+static int ath6kl_tm_rx_report(struct ath6kl *ar, void *buf, size_t buf_len,
+			       struct sk_buff *skb)
+{
+	int ret = 0;
+	long left;
+
+	if (down_interruptible(&ar->sem))
+		return -ERESTARTSYS;
+
+	if (!test_bit(WMI_READY, &ar->flag)) {
+		ret = -EIO;
+		goto out;
+	}
+
+	if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
+		ret = -EBUSY;
+		goto out;
+	}
+
+	if (ath6kl_wmi_test_cmd(ar->wmi, buf, buf_len) < 0) {
+		up(&ar->sem);
+		return -EIO;
+	}
+
+	left = wait_event_interruptible_timeout(ar->event_wq,
+						ar->tm.rx_report != NULL,
+						WMI_TIMEOUT);
+
+	if (left == 0) {
+		ret = -ETIMEDOUT;
+		goto out;
+	} else if (left < 0) {
+		ret = left;
+		goto out;
+	}
+
+	if (ar->tm.rx_report == NULL || ar->tm.rx_report_len == 0) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	NLA_PUT(skb, ATH6KL_TM_ATTR_DATA, ar->tm.rx_report_len,
+		ar->tm.rx_report);
+
+	kfree(ar->tm.rx_report);
+	ar->tm.rx_report = NULL;
+
+out:
+	up(&ar->sem);
+
+	return ret;
+
+nla_put_failure:
+	ret = -ENOBUFS;
+	goto out;
+}
+
+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, reply_len;
+	struct sk_buff *skb;
+	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:
+		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]);
+
+		reply_len = nla_total_size(ATH6KL_TM_DATA_MAX_LEN);
+		skb = cfg80211_testmode_alloc_reply_skb(wiphy, reply_len);
+		if (!skb)
+			return -ENOMEM;
+
+		err = ath6kl_tm_rx_report(ar, buf, buf_len, skb);
+		if (err < 0) {
+			kfree_skb(skb);
+			return err;
+		}
+
+		return cfg80211_testmode_reply(skb);
+	default:
+		return -EOPNOTSUPP;
+	}
+}