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station: Log scan results during a roam

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Provides useful information on why a roam might have failed, such as
failing to find the BSS or the BSS being ranked lower, and why that
might be.

The output format is the same as station_add_seen_bss for consistency.
This commit is contained in:
Michael Johnson 2022-08-01 11:06:31 +01:00 committed by Denis Kenzior
parent d9a16fee56
commit f4c3278a7b
1 changed files with 12 additions and 1 deletions
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13
src/station.c
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@ -2286,6 +2286,7 @@ static bool station_roam_scan_notify(int err, struct l_queue *bss_list,
struct station *station = userdata; struct station *station = userdata;
struct network *network = station->connected_network; struct network *network = station->connected_network;
struct handshake_state *hs = netdev_get_handshake(station->netdev); struct handshake_state *hs = netdev_get_handshake(station->netdev);
struct scan_bss *current_bss = station->connected_bss;
struct scan_bss *bss; struct scan_bss *bss;
struct scan_bss *best_bss = NULL; struct scan_bss *best_bss = NULL;
double best_bss_rank = 0.0; double best_bss_rank = 0.0;
@ -2317,9 +2318,20 @@ static bool station_roam_scan_notify(int err, struct l_queue *bss_list,
* for BSSes that are within the FT Mobility Domain so as to favor * for BSSes that are within the FT Mobility Domain so as to favor
* Fast Roaming, if it is supported. * Fast Roaming, if it is supported.
*/ */
l_debug("Current BSS '%s' with SSID: %s",
util_address_to_string(current_bss->addr),
util_ssid_to_utf8(current_bss->ssid_len, current_bss->ssid));
while ((bss = l_queue_pop_head(bss_list))) { while ((bss = l_queue_pop_head(bss_list))) {
double rank; double rank;
uint32_t kbps100 = DIV_ROUND_CLOSEST(bss->data_rate, 100000);
l_debug("Processing BSS '%s' with SSID: %s, freq: %u, rank: %u,"
" strength: %i, data_rate: %u.%u",
util_address_to_string(bss->addr),
util_ssid_to_utf8(bss->ssid_len, bss->ssid),
bss->frequency, bss->rank, bss->signal_strength,
kbps100 / 10, kbps100 % 10);
/* Skip the BSS we are connected to if doing an AP roam */ /* Skip the BSS we are connected to if doing an AP roam */
if (station->ap_directed_roaming && !memcmp(bss->addr, if (station->ap_directed_roaming && !memcmp(bss->addr,
@ -2327,7 +2339,6 @@ static bool station_roam_scan_notify(int err, struct l_queue *bss_list,
goto next; goto next;
/* Skip result if it is not part of the ESS */ /* Skip result if it is not part of the ESS */
if (bss->ssid_len != hs->ssid_len || if (bss->ssid_len != hs->ssid_len ||
memcmp(bss->ssid, hs->ssid, hs->ssid_len)) memcmp(bss->ssid, hs->ssid, hs->ssid_len))
goto next; goto next;