linux/drivers/net/wireless/libertas/ethtool.c

#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/delay.h>

#include "host.h"
#include "decl.h"
#include "defs.h"
#include "dev.h"
#include "join.h"
#include "wext.h"
static const char * mesh_stat_strings[]= {
			"drop_duplicate_bcast",
			"drop_ttl_zero",
			"drop_no_fwd_route",
			"drop_no_buffers",
			"fwded_unicast_cnt",
			"fwded_bcast_cnt",
			"drop_blind_table",
			"tx_failed_cnt"
};

static void libertas_ethtool_get_drvinfo(struct net_device *dev,
					 struct ethtool_drvinfo *info)
{
	wlan_private *priv = (wlan_private *) dev->priv;
	char fwver[32];

	libertas_get_fwversion(priv->adapter, fwver, sizeof(fwver) - 1);

	strcpy(info->driver, "libertas");
	strcpy(info->version, libertas_driver_version);
	strcpy(info->fw_version, fwver);
}

/* All 8388 parts have 16KiB EEPROM size at the time of writing.
 * In case that changes this needs fixing.
 */
#define LIBERTAS_EEPROM_LEN 16384

static int libertas_ethtool_get_eeprom_len(struct net_device *dev)
{
	return LIBERTAS_EEPROM_LEN;
}

static int libertas_ethtool_get_eeprom(struct net_device *dev,
                                  struct ethtool_eeprom *eeprom, u8 * bytes)
{
	wlan_private *priv = (wlan_private *) dev->priv;
	wlan_adapter *adapter = priv->adapter;
	struct wlan_ioctl_regrdwr regctrl;
	char *ptr;
	int ret;

	regctrl.action = 0;
	regctrl.offset = eeprom->offset;
	regctrl.NOB = eeprom->len;

	if (eeprom->offset + eeprom->len > LIBERTAS_EEPROM_LEN)
		return -EINVAL;

//      mutex_lock(&priv->mutex);

	adapter->prdeeprom = kmalloc(eeprom->len+sizeof(regctrl), GFP_KERNEL);
	if (!adapter->prdeeprom)
		return -ENOMEM;
	memcpy(adapter->prdeeprom, &regctrl, sizeof(regctrl));

	/* +14 is for action, offset, and NOB in
	 * response */
	lbs_deb_ethtool("action:%d offset: %x NOB: %02x\n",
	       regctrl.action, regctrl.offset, regctrl.NOB);

	ret = libertas_prepare_and_send_command(priv,
				    CMD_802_11_EEPROM_ACCESS,
				    regctrl.action,
				    CMD_OPTION_WAITFORRSP, 0,
				    &regctrl);

	if (ret) {
		if (adapter->prdeeprom)
			kfree(adapter->prdeeprom);
		goto done;
	}

	mdelay(10);

	ptr = (char *)adapter->prdeeprom;

	/* skip the command header, but include the "value" u32 variable */
	ptr = ptr + sizeof(struct wlan_ioctl_regrdwr) - 4;

	/*
	 * Return the result back to the user
	 */
	memcpy(bytes, ptr, eeprom->len);

	if (adapter->prdeeprom)
		kfree(adapter->prdeeprom);
//	mutex_unlock(&priv->mutex);

	ret = 0;

done:
	lbs_deb_enter_args(LBS_DEB_ETHTOOL, "ret %d", ret);
        return ret;
}

static void libertas_ethtool_get_stats(struct net_device * dev,
				struct ethtool_stats * stats, u64 * data)
{
	wlan_private *priv = dev->priv;

	lbs_deb_enter(LBS_DEB_ETHTOOL);

	stats->cmd = ETHTOOL_GSTATS;
	BUG_ON(stats->n_stats != MESH_STATS_NUM);

        data[0] = priv->mstats.fwd_drop_rbt;
        data[1] = priv->mstats.fwd_drop_ttl;
        data[2] = priv->mstats.fwd_drop_noroute;
        data[3] = priv->mstats.fwd_drop_nobuf;
        data[4] = priv->mstats.fwd_unicast_cnt;
        data[5] = priv->mstats.fwd_bcast_cnt;
        data[6] = priv->mstats.drop_blind;
        data[7] = priv->mstats.tx_failed_cnt;

	lbs_deb_enter(LBS_DEB_ETHTOOL);
}

static int libertas_ethtool_get_stats_count(struct net_device * dev)
{
	int ret;
	wlan_private *priv = dev->priv;
	struct cmd_ds_mesh_access mesh_access;

	lbs_deb_enter(LBS_DEB_ETHTOOL);

	/* Get Mesh Statistics */
	ret = libertas_prepare_and_send_command(priv,
			CMD_MESH_ACCESS, CMD_ACT_MESH_GET_STATS,
			CMD_OPTION_WAITFORRSP, 0, &mesh_access);

	if (ret) {
		ret = 0;
		goto done;
	}

        priv->mstats.fwd_drop_rbt = le32_to_cpu(mesh_access.data[0]);
        priv->mstats.fwd_drop_ttl = le32_to_cpu(mesh_access.data[1]);
        priv->mstats.fwd_drop_noroute = le32_to_cpu(mesh_access.data[2]);
        priv->mstats.fwd_drop_nobuf = le32_to_cpu(mesh_access.data[3]);
        priv->mstats.fwd_unicast_cnt = le32_to_cpu(mesh_access.data[4]);
        priv->mstats.fwd_bcast_cnt = le32_to_cpu(mesh_access.data[5]);
        priv->mstats.drop_blind = le32_to_cpu(mesh_access.data[6]);
        priv->mstats.tx_failed_cnt = le32_to_cpu(mesh_access.data[7]);

	ret = MESH_STATS_NUM;

done:
	lbs_deb_enter_args(LBS_DEB_ETHTOOL, "ret %d", ret);
	return ret;
}

static void libertas_ethtool_get_strings (struct net_device * dev,
					  u32 stringset,
					  u8 * s)
{
	int i;

	lbs_deb_enter(LBS_DEB_ETHTOOL);

	switch (stringset) {
        case ETH_SS_STATS:
		for (i=0; i < MESH_STATS_NUM; i++) {
			memcpy(s + i * ETH_GSTRING_LEN,
					mesh_stat_strings[i],
					ETH_GSTRING_LEN);
		}
		break;
        }
	lbs_deb_enter(LBS_DEB_ETHTOOL);
}

struct ethtool_ops libertas_ethtool_ops = {
	.get_drvinfo = libertas_ethtool_get_drvinfo,
	.get_eeprom =  libertas_ethtool_get_eeprom,
	.get_eeprom_len = libertas_ethtool_get_eeprom_len,
	.get_stats_count = libertas_ethtool_get_stats_count,
	.get_ethtool_stats = libertas_ethtool_get_stats,
	.get_strings = libertas_ethtool_get_strings,
};