libertas: rate adaptation configuration via iwconfig.
Implemented rate adaptation support via 'iwconfig rate' API. It is now
possible to specify a bit-rate value and append 'auto'. That will configure
rate adaptation to use all bit-rates equal or lower than than selected value.
Made lbs_cmd_802_11_rate_adapt_rateset a direct command.
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index e8d0144..cf261d3 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -676,26 +676,60 @@
return 0;
}
-static int lbs_cmd_802_11_rate_adapt_rateset(struct lbs_private *priv,
- struct cmd_ds_command *cmd,
- u16 cmd_action)
+static __le16 lbs_rate_to_fw_bitmap(int rate, int lower_rates_ok)
{
- struct cmd_ds_802_11_rate_adapt_rateset
- *rateadapt = &cmd->params.rateset;
+/* Bit Rate
+* 15:13 Reserved
+* 12 54 Mbps
+* 11 48 Mbps
+* 10 36 Mbps
+* 9 24 Mbps
+* 8 18 Mbps
+* 7 12 Mbps
+* 6 9 Mbps
+* 5 6 Mbps
+* 4 Reserved
+* 3 11 Mbps
+* 2 5.5 Mbps
+* 1 2 Mbps
+* 0 1 Mbps
+**/
+
+ uint16_t ratemask;
+ int i = lbs_data_rate_to_fw_index(rate);
+ if (lower_rates_ok)
+ ratemask = (0x1fef >> (12 - i));
+ else
+ ratemask = (1 << i);
+ return cpu_to_le16(ratemask);
+}
+
+int lbs_cmd_802_11_rate_adapt_rateset(struct lbs_private *priv,
+ uint16_t cmd_action)
+{
+ struct cmd_ds_802_11_rate_adapt_rateset cmd;
+ int ret;
lbs_deb_enter(LBS_DEB_CMD);
- cmd->size =
- cpu_to_le16(sizeof(struct cmd_ds_802_11_rate_adapt_rateset)
- + S_DS_GEN);
- cmd->command = cpu_to_le16(CMD_802_11_RATE_ADAPT_RATESET);
- rateadapt->action = cpu_to_le16(cmd_action);
- rateadapt->enablehwauto = cpu_to_le16(priv->enablehwauto);
- rateadapt->bitmap = cpu_to_le16(priv->ratebitmap);
+ if (!priv->cur_rate && !priv->enablehwauto)
+ return -EINVAL;
- lbs_deb_leave(LBS_DEB_CMD);
- return 0;
+ cmd.hdr.size = cpu_to_le16(sizeof(cmd));
+
+ cmd.action = cpu_to_le16(cmd_action);
+ cmd.enablehwauto = cpu_to_le16(priv->enablehwauto);
+ cmd.bitmap = lbs_rate_to_fw_bitmap(priv->cur_rate, priv->enablehwauto);
+ ret = lbs_cmd_with_response(priv, CMD_802_11_RATE_ADAPT_RATESET, &cmd);
+ if (!ret && cmd_action == CMD_ACT_GET) {
+ priv->ratebitmap = le16_to_cpu(cmd.bitmap);
+ priv->enablehwauto = le16_to_cpu(cmd.enablehwauto);
+ }
+
+ lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
+ return ret;
}
+EXPORT_SYMBOL_GPL(lbs_cmd_802_11_rate_adapt_rateset);
/**
* @brief Set the data rate
@@ -1378,11 +1412,6 @@
cmd_action, pdata_buf);
break;
- case CMD_802_11_RATE_ADAPT_RATESET:
- ret = lbs_cmd_802_11_rate_adapt_rateset(priv,
- cmdptr, cmd_action);
- break;
-
case CMD_802_11_MONITOR_MODE:
ret = lbs_cmd_802_11_monitor_mode(cmdptr,
cmd_action, pdata_buf);