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authorAmarnath Hullur Subramanyam <amarnath@qca.qualcomm.com>2015-03-25 12:40:33 -0700
committerAmarnath Hullur Subramanyam <amarnath@qca.qualcomm.com>2015-03-28 18:41:41 +0000
commit2cae13a872ae25ec37e0302ae9e9ca0e24c61686 (patch)
tree9b8f3036bf731488e6d814fcfa0aafac8c46e2e0 /include
parent4c50959717fcf4b5bf10721b4dda0d2c2f423eaf (diff)
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Preallocating max buffer size for scan_result in wifi_cached_scan_results
Android framework should provide a buffer to the wifihal which needs to be filled with scan_result. This commit will ensure that would happen by passing a fixed max buffer size as part of each wifi_cached_scan_results. Change-Id: I005dd39f26be62694c46369e16d5f7f89f64021d
Diffstat (limited to 'include')
-rw-r--r--include/hardware_legacy/gscan.h12
1 files changed, 7 insertions, 5 deletions
diff --git a/include/hardware_legacy/gscan.h b/include/hardware_legacy/gscan.h
index 3d7d5da..b9b0f61 100644
--- a/include/hardware_legacy/gscan.h
+++ b/include/hardware_legacy/gscan.h
@@ -23,6 +23,7 @@ const unsigned MAX_SIGNIFICANT_CHANGE_APS = 64;
const unsigned MAX_PNO_SSID = 64;
const unsigned MAX_HOTLIST_SSID = 8;
const unsigned MAX_BLACKLIST_BSSID = 16;
+const unsigned MAX_AP_CACHE_PER_SCAN = 32;
wifi_error wifi_get_valid_channels(wifi_interface_handle handle,
int band, int max_channels, wifi_channel *channels, int *num_channels);
@@ -120,7 +121,7 @@ typedef struct {
// an exponential backoff bucket and the scan period will grow exponentially
// as per formula: actual_period(N) = period ^ (N/(step_count+1))
// to a maximum period of max_period
- int exponent; // for exponential back off bucket: multiplier: new_period = old_period * exponent
+ int exponent; // for exponential back off bucket: multiplier: new_period=old_period*exponent
int step_count; // for exponential back off bucket, number of scans performed at a given
// period and until the exponent is applied
@@ -154,10 +155,11 @@ typedef enum {
/* Get the GSCAN cached scan results */
typedef struct {
- int scan_id; // a unique identifier for the scan unit
- int flags; // a bitmask with additional information about scan
- int num_results; // number of bssids retrieved by the scan
- wifi_scan_result *results; // scan results - one for each bssid
+ int scan_id; // a unique identifier for the scan unit
+ int flags; // a bitmask with additional
+ // information about scan
+ int num_results; // number of bssids retrieved by the scan
+ wifi_scan_result results[MAX_AP_CACHE_PER_SCAN]; // scan results - one for each bssid
} wifi_cached_scan_results;
wifi_error wifi_get_cached_gscan_results(wifi_interface_handle iface, byte flush,