The dfs master device should monitor radar channels
for potential radar interference for a minimum of
CAC (channel availability check) time, during this
period no tx can occur. If no radar interference
is detected the dfs master may initiate the tx with
new NL80211_CMD_DFS_ENABLE_TX command.
Signed-off-by: Victor Goldenshtein <victorg@xxxxxx>
---
include/linux/nl80211.h | 9 +++++++++
include/net/cfg80211.h | 3 +++
net/wireless/nl80211.c | 22 ++++++++++++++++++++++
3 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 5bffba0..b45ceb1 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -544,6 +544,13 @@
* @NL80211_CMD_DFS_RADAR_DETECTION: Start radar detection in the
* driver/HW. Once radar detected usermode notified with this event.
*
+ * @NL80211_CMD_DFS_ENABLE_TX: Initiate tx after verifying radar clearness on
+ * current channel. The dfs master device should monitor radar channels
+ * for potential radar interference for a minimum of CAC (channel
+ * availability check) time, during this period no tx can occur. If no
+ * radar interference is detected during this period the dfs master may
+ * initiate the tx.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -685,6 +692,8 @@ enum nl80211_commands {
NL80211_CMD_DFS_RADAR_DETECTION,
+ NL80211_CMD_DFS_ENABLE_TX,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index b47217b..fbd5b7a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1481,6 +1481,8 @@ struct cfg80211_gtk_rekey_data {
* @probe_client: probe an associated client, must return a cookie that it
* later passes to cfg80211_probe_status().
*
+ * @dfs_en_tx: Enable tx after radar interference check.
+ *
* @set_noack_map: Set the NoAck Map for the TIDs.
*
* @dfs_start_radar_detection: Start radar detection in the driver.
@@ -1685,6 +1687,7 @@ struct cfg80211_ops {
int (*dfs_start_radar_detection)(struct wiphy *wiphy,
struct net_device *dev);
+ int (*dfs_en_tx)(struct wiphy *wiphy, struct net_device *dev);
};
/*
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index e96bfc5..66dfcef 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -4058,6 +4058,20 @@ static int nl80211_dfs_start_radar_detection(struct sk_buff *skb,
return rdev->ops->dfs_start_radar_detection(&rdev->wiphy, dev);
}
+static int nl80211_dfs_en_tx(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
+
+
+ ASSERT_RDEV_LOCK(rdev);
+
+ if (!rdev->ops->dfs_en_tx)
+ return -EOPNOTSUPP;
+
+ return rdev->ops->dfs_en_tx(&rdev->wiphy, dev);
+}
+
static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
u32 seq, int flags,
struct cfg80211_registered_device *rdev,
@@ -6733,6 +6747,14 @@ static struct genl_ops nl80211_ops[] = {
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
+ {
+ .cmd = NL80211_CMD_DFS_ENABLE_TX,
+ .doit = nl80211_dfs_en_tx,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
};
static struct genl_multicast_group nl80211_mlme_mcgrp = {
--
1.7.5.4
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
