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Move scan/roaming related defines to a header file

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This is a step towards allowing these values to be used in both scan.c
and events.c.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Emmanuel Grumbach 2019-12-06 14:27:47 -08:00 committed by Jouni Malinen
parent 98ea9d5d51
commit ef1a45f28a
2 changed files with 22 additions and 22 deletions
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22
wpa_supplicant/scan.c
View file

@ -1956,20 +1956,6 @@ struct wpabuf * wpa_scan_get_vendor_ie_multi(const struct wpa_scan_res *res,
}
/*
* Channels with a great SNR can operate at full rate. What is a great SNR?
* This doc https://supportforums.cisco.com/docs/DOC-12954 says, "the general
* rule of thumb is that any SNR above 20 is good." This one
* http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a00805e9a96.shtml#qa23
* recommends 25 as a minimum SNR for 54 Mbps data rate. The estimates used in
* scan_est_throughput() allow even smaller SNR values for the maximum rates
* (21 for 54 Mbps, 22 for VHT80 MCS9, 24 for HT40 and HT20 MCS7). Use 25 as a
* somewhat conservative value here.
*/
#define GREAT_SNR 25
#define IS_5GHZ(n) (n > 4000)
/* Compare function for sorting scan results. Return >0 if @b is considered
* better. */
static int wpa_scan_result_compar(const void *a, const void *b)
@ -2178,14 +2164,6 @@ void filter_scan_res(struct wpa_supplicant *wpa_s,
}
/*
* Noise floor values to use when we have signal strength
* measurements, but no noise floor measurements. These values were
* measured in an office environment with many APs.
*/
#define DEFAULT_NOISE_FLOOR_2GHZ (-89)
#define DEFAULT_NOISE_FLOOR_5GHZ (-92)
void scan_snr(struct wpa_scan_res *res)
{
if (res->flags & WPA_SCAN_NOISE_INVALID) {

22
wpa_supplicant/scan.h
View file

@ -9,6 +9,28 @@
#ifndef SCAN_H
#define SCAN_H
/*
* Noise floor values to use when we have signal strength
* measurements, but no noise floor measurements. These values were
* measured in an office environment with many APs.
*/
#define DEFAULT_NOISE_FLOOR_2GHZ (-89)
#define DEFAULT_NOISE_FLOOR_5GHZ (-92)
/*
* Channels with a great SNR can operate at full rate. What is a great SNR?
* This doc https://supportforums.cisco.com/docs/DOC-12954 says, "the general
* rule of thumb is that any SNR above 20 is good." This one
* http://www.cisco.com/en/US/tech/tk722/tk809/technologies_q_and_a_item09186a00805e9a96.shtml#qa23
* recommends 25 as a minimum SNR for 54 Mbps data rate. The estimates used in
* scan_est_throughput() allow even smaller SNR values for the maximum rates
* (21 for 54 Mbps, 22 for VHT80 MCS9, 24 for HT40 and HT20 MCS7). Use 25 as a
* somewhat conservative value here.
*/
#define GREAT_SNR 25
#define IS_5GHZ(n) (n > 4000)
int wpa_supplicant_enabled_networks(struct wpa_supplicant *wpa_s);
void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec);
int wpa_supplicant_delayed_sched_scan(struct wpa_supplicant *wpa_s,