qcacld-3.0: Support for pre CAC on SAP for user requested channel
Add support for pre CAC on SAP for the user requested channel.
The reason for the requirement is to have SAP operations without
interruptions due to CAC. After starting SAP on the 2.4GHz
channel, the driver will start a pre CAC on the 5GHz DFS channel
requested. If no radar is detected, SAP is expected to switch
from the 2.4GHz channel to the DFS channel mentioned in the pre
CAC request. If radar is detected SAP will continue to operate on
the 2.4GHz channel. To provide the pre CAC channel to the driver,
vendor commands/attributes are used .
Change-Id: I4cf4bb5a861eea05f37fafb3bf35d327f5377aab
CRs-Fixed: 1045242
diff --git a/core/hdd/src/wlan_hdd_cfg80211.h b/core/hdd/src/wlan_hdd_cfg80211.h
index 81a9682..57bb546 100644
--- a/core/hdd/src/wlan_hdd_cfg80211.h
+++ b/core/hdd/src/wlan_hdd_cfg80211.h
@@ -270,6 +270,18 @@
* device. As an event, it indicates either the feature stopped after it
* was already running or feature has actually failed to start.
* @QCA_NL80211_VENDOR_SUBCMD_GET_STATION: send BSS Information
+ * @QCA_NL80211_VENDOR_SUBCMD_SAP_CONDITIONAL_CHAN_SWITCH: After SAP starts
+ * beaconing, this sub command provides the driver, the frequencies on the
+ * 5 GHz to check for any radar activity. Driver selects one channel from
+ * this priority list provided through
+ * @QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_FREQ_LIST and starts
+ * to check for radar activity on it. If no radar activity is detected
+ * during the channel availability check period, driver internally switches
+ * to the selected frequency of operation. If the frequency is zero, driver
+ * internally selects a channel. The status of this conditional switch is
+ * indicated through an event using the same sub command through
+ * @QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_STATUS. Attributes are
+ * listed in qca_wlan_vendor_attr_sap_conditional_chan_switch
*/
enum qca_nl80211_vendor_subcmds {
@@ -396,6 +408,7 @@
QCA_NL80211_VENDOR_SUBCMD_GET_STATION = 121,
QCA_NL80211_VENDOR_SUBCMD_P2P_LISTEN_OFFLOAD_START = 122,
QCA_NL80211_VENDOR_SUBCMD_P2P_LISTEN_OFFLOAD_STOP = 123,
+ QCA_NL80211_VENDOR_SUBCMD_SAP_CONDITIONAL_CHAN_SWITCH = 124,
};
/**
@@ -606,6 +619,8 @@
* @QCA_NL80211_VENDOR_SUBCMD_TSF_INDEX: TSF response events index
* @QCA_NL80211_VENDOR_SUBCMD_P2P_LO_EVENT_INDEX:
* P2P listen offload index
+ * @QCA_NL80211_VENDOR_SUBCMD_SAP_CONDITIONAL_CHAN_SWITCH_INDEX: SAP
+ * conditional channel switch index
*/
enum qca_nl80211_vendor_subcmds_index {
@@ -682,6 +697,7 @@
QCA_NL80211_VENDOR_SUBCMD_NDP_INDEX,
#endif /* WLAN_FEATURE_NAN_DATAPATH */
QCA_NL80211_VENDOR_SUBCMD_P2P_LO_EVENT_INDEX,
+ QCA_NL80211_VENDOR_SUBCMD_SAP_CONDITIONAL_CHAN_SWITCH_INDEX,
};
/**
@@ -2079,6 +2095,29 @@
NUM_QCA_WLAN_VENDOR_FEATURES
};
+/**
+ * enum qca_wlan_vendor_attr_sap_conditional_chan_switch - Parameters for SAP
+ * conditional channel switch
+ * @QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_INVALID: Invalid initial
+ * value
+ * @QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_FREQ_LIST: Priority based
+ * frequency list (an array of u32 values in host byte order)
+ * @QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_STATUS: Status of the
+ * conditional switch (u32)- 0: Success, Non-zero: Failure
+ * @QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_AFTER_LAST: After last
+ * @QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_MAX: Subcommand max
+ */
+enum qca_wlan_vendor_attr_sap_conditional_chan_switch {
+ QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_INVALID = 0,
+ QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_FREQ_LIST = 1,
+ QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_STATUS = 2,
+
+ /* Keep Last */
+ QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_AFTER_LAST,
+ QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_MAX =
+ QCA_WLAN_VENDOR_ATTR_SAP_CONDITIONAL_CHAN_SWITCH_AFTER_LAST - 1,
+};
+
/* Feature defines */
#define WIFI_FEATURE_INFRA 0x0001 /* Basic infrastructure mode */
#define WIFI_FEATURE_INFRA_5G 0x0002 /* Support for 5 GHz Band */
@@ -2758,6 +2797,7 @@
}
#define cfg80211_vendor_event_alloc backported_cfg80211_vendor_event_alloc
#endif
+int wlan_hdd_request_pre_cac(uint8_t channel);
int wlan_hdd_sap_cfg_dfs_override(hdd_adapter_t *adapter);
enum cds_con_mode wlan_hdd_convert_nl_iftype_to_hdd_type(