libertas: convert GET_LOG to a direct command

Now uses __lbs_cmd() to get the "log" (it's actually more a snapshot of
various counters, not a sequential log). Besides the "mechanical" convertion
the patch add the following logical changes:

* Removes the priv->logmsg variable, it was only used in one place anyway,
  also don't blindly get the counters when associating. Getting the
  counters then the user asks via WEXT for them is good enought.
* don't set wstats.discard.fragment with log.rxfrag, because the latter is
  a counter for successfully received packets, not for fragmented packets.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/assoc.c

@@ -624,10 +624,6 @@ void lbs_association_worker(struct work_struct *work)
 			lbs_prepare_and_send_command(priv,
 				CMD_802_11_RSSI,
 				0, CMD_OPTION_WAITFORRSP, 0, NULL);
-
-			lbs_prepare_and_send_command(priv,
-				CMD_802_11_GET_LOG,
-				0, CMD_OPTION_WAITFORRSP, 0, NULL);
 		} else {
 			ret = -1;
 		}

drivers/net/wireless/libertas/cmd.c

@@ -494,18 +494,6 @@ static int lbs_cmd_802_11_reset(struct lbs_private *priv,
 	return 0;
 }
 
-static int lbs_cmd_802_11_get_log(struct lbs_private *priv,
-				   struct cmd_ds_command *cmd)
-{
-	lbs_deb_enter(LBS_DEB_CMD);
-	cmd->command = cpu_to_le16(CMD_802_11_GET_LOG);
-	cmd->size =
-		cpu_to_le16(sizeof(struct cmd_ds_802_11_get_log) + S_DS_GEN);
-
-	lbs_deb_leave(LBS_DEB_CMD);
-	return 0;
-}
-
 static int lbs_cmd_802_11_get_stat(struct lbs_private *priv,
 				    struct cmd_ds_command *cmd)
 {
@@ -1423,10 +1411,6 @@ int lbs_prepare_and_send_command(struct lbs_private *priv,
 		ret = lbs_cmd_802_11_reset(priv, cmdptr, cmd_action);
 		break;
 
-	case CMD_802_11_GET_LOG:
-		ret = lbs_cmd_802_11_get_log(priv, cmdptr);
-		break;
-
 	case CMD_802_11_AUTHENTICATE:
 		ret = lbs_cmd_80211_authenticate(priv, cmdptr, pdata_buf);
 		break;

drivers/net/wireless/libertas/cmdresp.c

@@ -303,20 +303,6 @@ static int lbs_ret_802_11_eeprom_access(struct lbs_private *priv,
 	return 0;
 }
 
-static int lbs_ret_get_log(struct lbs_private *priv,
-			    struct cmd_ds_command *resp)
-{
-	struct cmd_ds_802_11_get_log *logmessage = &resp->params.glog;
-
-	lbs_deb_enter(LBS_DEB_CMD);
-
-	/* Stored little-endian */
-	memcpy(&priv->logmsg, logmessage, sizeof(struct cmd_ds_802_11_get_log));
-
-	lbs_deb_leave(LBS_DEB_CMD);
-	return 0;
-}
-
 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
 					struct cmd_ds_command *resp)
 {
@@ -352,10 +338,6 @@ static inline int handle_cmd_response(struct lbs_private *priv,
 		ret = lbs_ret_reg_access(priv, respcmd, resp);
 		break;
 
-	case CMD_RET(CMD_802_11_GET_LOG):
-		ret = lbs_ret_get_log(priv, resp);
-		break;
-
 	case CMD_RET_802_11_ASSOCIATE:
 	case CMD_RET(CMD_802_11_ASSOCIATE):
 	case CMD_RET(CMD_802_11_REASSOCIATE):

drivers/net/wireless/libertas/dev.h

@@ -323,8 +323,6 @@ struct lbs_private {
 	u8 *prdeeprom;
 	struct lbs_offset_value offsetvalue;
 
-	struct cmd_ds_802_11_get_log logmsg;
-
 	u32 monitormode;
 	u8 fw_ready;
 };

drivers/net/wireless/libertas/hostcmd.h

@@ -195,6 +195,8 @@ struct cmd_ds_802_11_scan_rsp {
 };
 
 struct cmd_ds_802_11_get_log {
+	struct cmd_header hdr;
+
 	__le32 mcasttxframe;
 	__le32 failed;
 	__le32 retry;
@@ -701,7 +703,6 @@ struct cmd_ds_command {
 		struct cmd_ds_802_11_ad_hoc_start ads;
 		struct cmd_ds_802_11_reset reset;
 		struct cmd_ds_802_11_ad_hoc_result result;
-		struct cmd_ds_802_11_get_log glog;
 		struct cmd_ds_802_11_authenticate auth;
 		struct cmd_ds_802_11_get_stat gstat;
 		struct cmd_ds_802_3_get_stat gstat_8023;

drivers/net/wireless/libertas/wext.c

@@ -820,6 +820,7 @@ static struct iw_statistics *lbs_get_wireless_stats(struct net_device *dev)
 	int stats_valid = 0;
 	u8 rssi;
 	u32 tx_retries;
+	struct cmd_ds_802_11_get_log log;
 
 	lbs_deb_enter(LBS_DEB_WEXT);
 
@@ -863,7 +864,11 @@ static struct iw_statistics *lbs_get_wireless_stats(struct net_device *dev)
 	/* Quality by TX errors */
 	priv->wstats.discard.retries = priv->stats.tx_errors;
 
-	tx_retries = le32_to_cpu(priv->logmsg.retry);
+	memset(&log, 0, sizeof(log));
+	log.hdr.size = cpu_to_le16(sizeof(log));
+	lbs_cmd_with_response(priv, CMD_802_11_GET_LOG, &log);
+
+	tx_retries = le32_to_cpu(log.retry);
 
 	if (tx_retries > 75)
 		tx_qual = (90 - tx_retries) * POOR / 15;
@@ -879,10 +884,9 @@ static struct iw_statistics *lbs_get_wireless_stats(struct net_device *dev)
 		    (PERFECT - VERY_GOOD) / 50 + VERY_GOOD;
 	quality = min(quality, tx_qual);
 
-	priv->wstats.discard.code = le32_to_cpu(priv->logmsg.wepundecryptable);
-	priv->wstats.discard.fragment = le32_to_cpu(priv->logmsg.rxfrag);
+	priv->wstats.discard.code = le32_to_cpu(log.wepundecryptable);
 	priv->wstats.discard.retries = tx_retries;
-	priv->wstats.discard.misc = le32_to_cpu(priv->logmsg.ackfailure);
+	priv->wstats.discard.misc = le32_to_cpu(log.ackfailure);
 
 	/* Calculate quality */
 	priv->wstats.qual.qual = min_t(u8, quality, 100);
@@ -892,8 +896,6 @@ static struct iw_statistics *lbs_get_wireless_stats(struct net_device *dev)
 	/* update stats asynchronously for future calls */
 	lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
 					0, 0, NULL);
-	lbs_prepare_and_send_command(priv, CMD_802_11_GET_LOG, 0,
-					0, 0, NULL);
 out:
 	if (!stats_valid) {
 		priv->wstats.miss.beacon = 0;