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wil6210: add support for discovery mode during scan

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Add support for discovery mode during scan. When discovery mode
is active, station transmits special beacons while scanning.
This can optimize the scan mainly when there is only one AP/PCP
around.
Discovery mode is implicitly used by firmware during P2P search.
Since there is currently no use case where user space has a
reason to directly control discovery mode, we expose it only
through a debugfs flag.
Also fix name confusion in the wmi_scan_type enumeration.
The type previously called WMI_LONG_SCAN is actually
WMI_ACTIVE_SCAN.

Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Lior David 2016-03-01 19:18:08 +02:00 committed by Kalle Valo
parent 5852742148
commit 74997a53d2
4 changed files with 17 additions and 3 deletions
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6
drivers/net/wireless/ath/wil6210/cfg80211.c
View File

@ -319,6 +319,7 @@ static int wil_cfg80211_scan(struct wiphy *wiphy,
mod_timer(&wil->scan_timer, jiffies + WIL6210_SCAN_TO);
memset(&cmd, 0, sizeof(cmd));
cmd.cmd.scan_type = WMI_ACTIVE_SCAN;
cmd.cmd.num_channels = 0;
n = min(request->n_channels, 4U);
for (i = 0; i < n; i++) {
@ -346,6 +347,11 @@ static int wil_cfg80211_scan(struct wiphy *wiphy,
if (rc)
goto out;
if (wil->discovery_mode && cmd.cmd.scan_type == WMI_ACTIVE_SCAN) {
cmd.cmd.discovery_mode = 1;
wil_dbg_misc(wil, "active scan with discovery_mode=1\n");
}
rc = wmi_send(wil, WMI_START_SCAN_CMDID, &cmd, sizeof(cmd.cmd) +
cmd.cmd.num_channels * sizeof(cmd.cmd.channel_list[0]));

6
drivers/net/wireless/ath/wil6210/debugfs.c
View File

@ -37,6 +37,7 @@ enum dbg_off_type {
doff_x32 = 1,
doff_ulong = 2,
doff_io32 = 3,
doff_u8 = 4
};
/* offset to "wil" */
@ -346,6 +347,10 @@ static void wil6210_debugfs_init_offset(struct wil6210_priv *wil,
tbl[i].mode, dbg,
base + tbl[i].off);
break;
case doff_u8:
f = debugfs_create_u8(tbl[i].name, tbl[i].mode, dbg,
base + tbl[i].off);
break;
default:
f = ERR_PTR(-EINVAL);
}
@ -1522,6 +1527,7 @@ static const struct dbg_off dbg_wil_off[] = {
WIL_FIELD(hw_version, S_IRUGO, doff_x32),
WIL_FIELD(recovery_count, S_IRUGO, doff_u32),
WIL_FIELD(ap_isolate, S_IRUGO, doff_u32),
WIL_FIELD(discovery_mode, S_IRUGO | S_IWUSR, doff_u8),
{},
};

1
drivers/net/wireless/ath/wil6210/wil6210.h
View File

@ -615,6 +615,7 @@ struct wil6210_priv {
/* debugfs */
struct dentry *debug;
struct debugfs_blob_wrapper blobs[ARRAY_SIZE(fw_mapping)];
u8 discovery_mode;
void *platform_handle;
struct wil_platform_ops platform_ops;

7
drivers/net/wireless/ath/wil6210/wmi.h
View File

@ -286,16 +286,17 @@ struct wmi_delete_cipher_key_cmd {
* - WMI_SCAN_COMPLETE_EVENTID
*/
enum wmi_scan_type {
WMI_LONG_SCAN = 0,
WMI_ACTIVE_SCAN = 0,
WMI_SHORT_SCAN = 1,
WMI_PBC_SCAN = 2,
WMI_DIRECT_SCAN = 3,
WMI_ACTIVE_SCAN = 4,
WMI_LONG_SCAN = 4,
};
struct wmi_start_scan_cmd {
u8 direct_scan_mac_addr[6];
u8 reserved[2];
u8 discovery_mode;
u8 reserved;
__le32 home_dwell_time; /* Max duration in the home channel(ms) */
__le32 force_scan_interval; /* Time interval between scans (ms)*/
u8 scan_type; /* wmi_scan_type */