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qcacmn: Add scan_ctrl_flags_ext to scan command

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This change adds scan_ctrl_flags_ext to scan command
to support DBS Scan selection policy.

Change-Id: I71727259c0b5984cfc8fd6157ed0066d3cd9b193
CRs-Fixed: 2061031
This commit is contained in:
Ganesh Kondabattini 2017-07-27 11:42:33 +05:30 • committed by snandini
commit db183ccb8c
2 changed files with 75 additions and 0 deletions
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11
umac/scan/core/src/wlan_scan_main.h
View file

@ -104,6 +104,17 @@
#define SCAN_MAX_BSS_PDEV 100
#define SCAN_PRIORITY SCAN_PRIORITY_LOW
/* DBS Scan policy selection ext flags */
#define SCAN_FLAG_EXT_DBS_SCAN_POLICY_MASK 0x00000003
#define SCAN_FLAG_EXT_DBS_SCAN_POLICY_BIT 0
#define SCAN_DBS_POLICY_DEFAULT 0x0
#define SCAN_DBS_POLICY_FORCE_NONDBS 0x1
#define SCAN_DBS_POLICY_IGNORE_DUTY 0x2
#define SCAN_DBS_POLICY_MAX 0x3
/* Minimum number of channels for enabling DBS Scan */
#define SCAN_MIN_CHAN_DBS_SCAN_THRESHOLD 8
/**
* struct cb_handler - defines scan event handler
* call back function and arguments

64
umac/scan/dispatcher/src/wlan_scan_ucfg_api.c
View file

@ -26,12 +26,16 @@
#include <wlan_objmgr_cmn.h>
#include <wlan_serialization_api.h>
#include <wlan_scan_tgt_api.h>
#include <wlan_reg_services_api.h>
#include "../../core/src/wlan_scan_main.h"
#include "../../core/src/wlan_scan_manager.h"
#include "../../core/src/wlan_scan_cache_db.h"
#ifdef WLAN_PMO_ENABLE
#include <wlan_pmo_obj_mgmt_api.h>
#endif
#ifdef WLAN_POLICY_MGR_ENABLE
#include <wlan_policy_mgr_api.h>
#endif
QDF_STATUS ucfg_scan_register_bcn_cb(struct wlan_objmgr_psoc *psoc,
update_beacon_cb cb, enum scan_cb_type type)
@ -328,6 +332,64 @@ ucfg_scan_update_pno_config(struct pno_def_config *pno,
#endif
/**
* ucfg_scan_update_dbs_scan_ctrl_ext_flag() - update dbs scan ctrl flags
* @req: pointer to scan request
*
* This function updates the dbs scan ctrl flags.
* Non-DBS scan is requested if any of the below case is met:
* 1. HW is DBS incapable
* 2. Directed scan
* 3. Channel list has only few channels
* 4. Channel list has single band channels
* For remaining cases, dbs scan is requested.
*
* Return: None
*/
static void
ucfg_scan_update_dbs_scan_ctrl_ext_flag(struct scan_start_request *req)
{
uint32_t num_chan;
struct wlan_objmgr_psoc *psoc;
uint32_t scan_dbs_policy = SCAN_DBS_POLICY_FORCE_NONDBS;
psoc = wlan_vdev_get_psoc(req->vdev);
/* Resetting the scan_ctrl_flags_ext to 0 */
req->scan_req.scan_ctrl_flags_ext = 0;
if (!policy_mgr_is_hw_dbs_capable(psoc))
goto end;
if (!qdf_is_macaddr_zero(&req->scan_req.bssid_list[0]))
goto end;
num_chan = req->scan_req.num_chan;
/* num_chan=0 means all channels */
if (!num_chan)
scan_dbs_policy = SCAN_DBS_POLICY_DEFAULT;
if (num_chan < SCAN_MIN_CHAN_DBS_SCAN_THRESHOLD)
goto end;
while (num_chan > 1) {
if (!WLAN_REG_IS_SAME_BAND_CHANNELS(
req->scan_req.chan_list[0],
req->scan_req.chan_list[num_chan-1])) {
scan_dbs_policy = SCAN_DBS_POLICY_DEFAULT;
break;
}
num_chan--;
}
end:
req->scan_req.scan_ctrl_flags_ext |=
((scan_dbs_policy << SCAN_FLAG_EXT_DBS_SCAN_POLICY_BIT)
& SCAN_FLAG_EXT_DBS_SCAN_POLICY_MASK);
scm_debug("scan_ctrl_flags_ext: 0x%x",
req->scan_req.scan_ctrl_flags_ext);
}
QDF_STATUS
ucfg_scan_start(struct scan_start_request *req)
@ -345,6 +407,8 @@ ucfg_scan_start(struct scan_start_request *req)
req->scan_req.scan_req_id, req->scan_req.scan_id,
req->scan_req.vdev_id);
ucfg_scan_update_dbs_scan_ctrl_ext_flag(req);
/* Try to get vdev reference. Return if reference could
* not be taken. Reference will be released once scan
* request handling completes along with free of @req.