iwlwifi: mvm: add extended dwell time
When doing active scan on crowded channels we are likely to miss probe
responses due to collisions. To overcome this issue we use an extended
dwell time on channels 1, 6 and 11; this dwell time is set to 100.
In case of fragmented scan extended dwell time is the maximum out of
channel time - 44 msec. Fragmented active scan will be addressed later.
Extended dwell time isn't used in sched scan or p2p find.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-scan.h b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-scan.h
index d92712d..f01dab0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-scan.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api-scan.h
@@ -285,6 +285,8 @@
* @IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED: all passive scans will be fragmented
* @IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED: insert WFA vendor-specific TPC report
* and DS parameter set IEs into probe requests.
+ * @IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL: use extended dwell time on channels
+ * 1, 6 and 11.
* @IWL_MVM_LMAC_SCAN_FLAG_MATCH: Send match found notification on matches
*/
enum iwl_mvm_lmac_scan_flags {
@@ -295,6 +297,7 @@
IWL_MVM_LMAC_SCAN_FLAG_MULTIPLE_SSIDS = BIT(4),
IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED = BIT(5),
IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED = BIT(6),
+ IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL = BIT(7),
IWL_MVM_LMAC_SCAN_FLAG_MATCH = BIT(9),
};
@@ -322,6 +325,7 @@
* @active-dwell: dwell time for active channels
* @passive-dwell: dwell time for passive channels
* @fragmented-dwell: dwell time for fragmented passive scan
+ * @extended_dwell: dwell time for channels 1, 6 and 11 (in certain cases)
* @reserved2: for alignment and future use
* @rx_chain_selct: PHY_RX_CHAIN_* flags
* @scan_flags: &enum iwl_mvm_lmac_scan_flags
@@ -346,7 +350,8 @@
u8 active_dwell;
u8 passive_dwell;
u8 fragmented_dwell;
- __le16 reserved2;
+ u8 extended_dwell;
+ u8 reserved2;
__le16 rx_chain_select;
__le32 scan_flags;
__le32 max_out_time;
@@ -490,7 +495,7 @@
* @dwell_active: default dwell time for active scan
* @dwell_passive: default dwell time for passive scan
* @dwell_fragmented: default dwell time for fragmented scan
- * @reserved: for future use and alignment
+ * @dwell_extended: default dwell time for channels 1, 6 and 11
* @mac_addr: default mac address to be used in probes
* @bcast_sta_id: the index of the station in the fw
* @channel_flags: default channel flags - enum iwl_channel_flags
@@ -507,7 +512,7 @@
u8 dwell_active;
u8 dwell_passive;
u8 dwell_fragmented;
- u8 reserved;
+ u8 dwell_extended;
u8 mac_addr[ETH_ALEN];
u8 bcast_sta_id;
u8 channel_flags;
@@ -543,7 +548,8 @@
IWL_UMAC_SCAN_GEN_FLAGS_MULTIPLE_SSID = BIT(6),
IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED = BIT(7),
IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED = BIT(8),
- IWL_UMAC_SCAN_GEN_FLAGS_MATCH = BIT(9)
+ IWL_UMAC_SCAN_GEN_FLAGS_MATCH = BIT(9),
+ IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL = BIT(10),
};
/**
@@ -597,7 +603,7 @@
* @uid: scan id, &enum iwl_umac_scan_uid_offsets
* @ooc_priority: out of channel priority - &enum iwl_scan_priority
* @general_flags: &enum iwl_umac_scan_general_flags
- * @reserved1: for future use and alignment
+ * @extended_dwell: dwell time for channels 1, 6 and 11
* @active_dwell: dwell time for active scan
* @passive_dwell: dwell time for passive scan
* @fragmented_dwell: dwell time for fragmented passive scan
@@ -606,7 +612,7 @@
* @scan_priority: scan internal prioritization &enum iwl_scan_priority
* @channel_flags: &enum iwl_scan_channel_flags
* @n_channels: num of channels in scan request
- * @reserved2: for future use and alignment
+ * @reserved: for future use and alignment
* @data: &struct iwl_scan_channel_cfg_umac and
* &struct iwl_scan_req_umac_tail
*/
@@ -616,7 +622,7 @@
__le32 ooc_priority;
/* SCAN_GENERAL_PARAMS_API_S_VER_1 */
__le32 general_flags;
- u8 reserved1;
+ u8 extended_dwell;
u8 active_dwell;
u8 passive_dwell;
u8 fragmented_dwell;
@@ -626,7 +632,7 @@
/* SCAN_CHANNEL_PARAMS_API_S_VER_1 */
u8 channel_flags;
u8 n_channels;
- __le16 reserved2;
+ __le16 reserved;
u8 data[];
} __packed; /* SCAN_REQUEST_CMD_UMAC_API_S_VER_1 */