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hostapd: ubus: add notification for BSS transition response

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To allow steering daemons to be aware of the STA-decided transition
target, publish WNM transition responses to ubus. This way, steerings
daemons can learn about STA-chosen targets and send a better selection
of transition candidates.

Signed-off-by: David Bauer <mail@david-bauer.net>
This commit is contained in:
David Bauer 2020-10-21 20:50:01 +02:00
parent 48e209e5c5
commit a3de42e72c
3 changed files with 74 additions and 0 deletions
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30
package/network/services/hostapd/patches/600-ubus_support.patch
View File

@ -514,3 +514,33 @@
struct os_reltime backlogged_until;
#endif /* CONFIG_AIRTIME_POLICY */
--- a/src/ap/wnm_ap.c
+++ b/src/ap/wnm_ap.c
@@ -463,7 +463,7 @@ static void ieee802_11_rx_bss_trans_mgmt
size_t len)
{
u8 dialog_token, status_code, bss_termination_delay;
- const u8 *pos, *end;
+ const u8 *pos, *end, *target_bssid;
int enabled = hapd->conf->bss_transition;
struct sta_info *sta;
@@ -510,6 +510,7 @@ static void ieee802_11_rx_bss_trans_mgmt
wpa_printf(MSG_DEBUG, "WNM: not enough room for Target BSSID field");
return;
}
+ target_bssid = pos;
sta->agreed_to_steer = 1;
eloop_cancel_timeout(ap_sta_reset_steer_flag_timer, hapd, sta);
eloop_register_timeout(2, 0, ap_sta_reset_steer_flag_timer,
@@ -529,6 +530,10 @@ static void ieee802_11_rx_bss_trans_mgmt
MAC2STR(addr), status_code, bss_termination_delay);
}
+ hostapd_ubus_notify_bss_transition_response(hapd, sta->addr, dialog_token,
+ status_code, bss_termination_delay,
+ target_bssid, pos, end - pos);
+
wpa_hexdump(MSG_DEBUG, "WNM: BSS Transition Candidate List Entries",
pos, end - pos);
}

33
package/network/services/hostapd/src/src/ap/ubus.c
View File

@ -1757,3 +1757,36 @@ void hostapd_ubus_notify_radar_detected(struct hostapd_iface *iface, int frequen
ubus_notify(ctx, &hapd->ubus.obj, "radar-detected", b.head, -1);
}
}
void hostapd_ubus_notify_bss_transition_response(
struct hostapd_data *hapd, const u8 *addr, u8 dialog_token, u8 status_code,
u8 bss_termination_delay, const u8 *target_bssid,
const u8 *candidate_list, u16 candidate_list_len)
{
#ifdef CONFIG_WNM_AP
char *cl_str;
u16 i;
if (!hapd->ubus.obj.has_subscribers)
return;
if (!addr)
return;
blob_buf_init(&b, 0);
blobmsg_add_macaddr(&b, "address", addr);
blobmsg_add_u8(&b, "dialog-token", dialog_token);
blobmsg_add_u8(&b, "status-code", status_code);
blobmsg_add_u8(&b, "bss-termination-delay", bss_termination_delay);
if (target_bssid)
blobmsg_add_macaddr(&b, "target-bssid", target_bssid);
if (candidate_list_len > 0) {
cl_str = blobmsg_alloc_string_buffer(&b, "candidate-list", candidate_list_len * 2 + 1);
for (i = 0; i < candidate_list_len; i++)
snprintf(&cl_str[i*2], 3, "%02X", candidate_list[i]);
blobmsg_add_string_buffer(&b);
}
ubus_notify(ctx, &hapd->ubus.obj, "bss-transition-response", b.head, -1);
#endif
}

11
package/network/services/hostapd/src/src/ap/ubus.h
View File

@ -55,6 +55,10 @@ void hostapd_ubus_notify_beacon_report(struct hostapd_data *hapd,
void hostapd_ubus_notify_radar_detected(struct hostapd_iface *iface, int frequency,
int chan_width, int cf1, int cf2);
void hostapd_ubus_notify_bss_transition_response(
struct hostapd_data *hapd, const u8 *addr, u8 dialog_token, u8 status_code,
u8 bss_termination_delay, const u8 *target_bssid,
const u8 *candidate_list, u16 candidate_list_len);
void hostapd_ubus_add(struct hapd_interfaces *interfaces);
void hostapd_ubus_free(struct hapd_interfaces *interfaces);
@ -107,6 +111,13 @@ static inline void hostapd_ubus_notify_radar_detected(struct hostapd_iface *ifac
{
}
static inline void hostapd_ubus_notify_bss_transition_response(
struct hostapd_data *hapd, const u8 *addr, u8 dialog_token, u8 status_code,
u8 bss_termination_delay, const u8 *target_bssid,
const u8 *candidate_list, u16 candidate_list_len)
{
}
static inline void hostapd_ubus_add(struct hapd_interfaces *interfaces)
{
}