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mwifiex: disable CAC upon radar detection event

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This patch adds support to disable ongoing CAC in FW upon
detecting radar during CAC period.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Avinash Patil 2015-06-03 16:59:36 +05:30 committed by Kalle Valo
parent 7b7166256d
commit 511c8989fe
2 changed files with 28 additions and 4 deletions
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30
drivers/net/wireless/mwifiex/11h.c
View File

@ -161,19 +161,38 @@ int mwifiex_cmd_issue_chan_report_request(struct mwifiex_private *priv,
cr_req->chan_desc.chan_width = radar_params->chandef->width;
cr_req->msec_dwell_time = cpu_to_le32(radar_params->cac_time_ms);
mwifiex_dbg(priv->adapter, MSG,
"11h: issuing DFS Radar check for channel=%d\n",
radar_params->chandef->chan->hw_value);
if (radar_params->cac_time_ms)
mwifiex_dbg(priv->adapter, MSG,
"11h: issuing DFS Radar check for channel=%d\n",
radar_params->chandef->chan->hw_value);
else
mwifiex_dbg(priv->adapter, MSG, "cancelling CAC\n");
return 0;
}
int mwifiex_stop_radar_detection(struct mwifiex_private *priv,
struct cfg80211_chan_def *chandef)
{
struct mwifiex_radar_params radar_params;
memset(&radar_params, 0, sizeof(struct mwifiex_radar_params));
radar_params.chandef = chandef;
radar_params.cac_time_ms = 0;
return mwifiex_send_cmd(priv, HostCmd_CMD_CHAN_REPORT_REQUEST,
HostCmd_ACT_GEN_SET, 0, &radar_params, true);
}
/* This function is to abort ongoing CAC upon stopping AP operations
* or during unload.
*/
void mwifiex_abort_cac(struct mwifiex_private *priv)
{
if (priv->wdev.cac_started) {
if (mwifiex_stop_radar_detection(priv, &priv->dfs_chandef))
mwifiex_dbg(priv->adapter, ERROR,
"failed to stop CAC in FW\n");
mwifiex_dbg(priv->adapter, MSG,
"Aborting delayed work for CAC.\n");
cancel_delayed_work_sync(&priv->dfs_cac_work);
@ -245,6 +264,9 @@ int mwifiex_11h_handle_radar_detected(struct mwifiex_private *priv,
if (le32_to_cpu(rdr_event->passed)) {
mwifiex_dbg(priv->adapter, MSG,
"radar detected; indicating kernel\n");
if (mwifiex_stop_radar_detection(priv, &priv->dfs_chandef))
mwifiex_dbg(priv->adapter, ERROR,
"Failed to stop CAC in FW\n");
cfg80211_radar_event(priv->adapter->wiphy, &priv->dfs_chandef,
GFP_KERNEL);
mwifiex_dbg(priv->adapter, MSG, "regdomain: %d\n",
@ -252,7 +274,7 @@ int mwifiex_11h_handle_radar_detected(struct mwifiex_private *priv,
mwifiex_dbg(priv->adapter, MSG, "radar detection type: %d\n",
rdr_event->det_type);
} else {
mwifiex_dbg(priv->adapter, ERROR,
mwifiex_dbg(priv->adapter, MSG,
"false radar detection event!\n");
}

2
drivers/net/wireless/mwifiex/main.h
View File

@ -1473,6 +1473,8 @@ mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
void mwifiex_dfs_cac_work_queue(struct work_struct *work);
void mwifiex_dfs_chan_sw_work_queue(struct work_struct *work);
void mwifiex_abort_cac(struct mwifiex_private *priv);
int mwifiex_stop_radar_detection(struct mwifiex_private *priv,
struct cfg80211_chan_def *chandef);
int mwifiex_11h_handle_radar_detected(struct mwifiex_private *priv,
struct sk_buff *skb);