From a3de42e72ce349c14263737c5d6ec7b00397cf14 Mon Sep 17 00:00:00 2001 From: David Bauer Date: Wed, 21 Oct 2020 20:50:01 +0200 Subject: [PATCH] hostapd: ubus: add notification for BSS transition response 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 --- .../hostapd/patches/600-ubus_support.patch | 30 +++++++++++++++++ .../services/hostapd/src/src/ap/ubus.c | 33 +++++++++++++++++++ .../services/hostapd/src/src/ap/ubus.h | 11 +++++++ 3 files changed, 74 insertions(+) diff --git a/package/network/services/hostapd/patches/600-ubus_support.patch b/package/network/services/hostapd/patches/600-ubus_support.patch index 005ed54e0c..d77d245243 100644 --- a/package/network/services/hostapd/patches/600-ubus_support.patch +++ b/package/network/services/hostapd/patches/600-ubus_support.patch @@ -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); + } diff --git a/package/network/services/hostapd/src/src/ap/ubus.c b/package/network/services/hostapd/src/src/ap/ubus.c index 367e1b652b..30bb353953 100644 --- a/package/network/services/hostapd/src/src/ap/ubus.c +++ b/package/network/services/hostapd/src/src/ap/ubus.c @@ -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 +} diff --git a/package/network/services/hostapd/src/src/ap/ubus.h b/package/network/services/hostapd/src/src/ap/ubus.h index acdac74360..899b001dd5 100644 --- a/package/network/services/hostapd/src/src/ap/ubus.h +++ b/package/network/services/hostapd/src/src/ap/ubus.h @@ -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) { } -- 2.30.2