hostapd: add abridged flag in disassoc_imminent

If the abridged flag is set to 1 the APs that are listed in the BSS
Transition Candidate List are prioritized. If the bit is not set, the
APs have the same prioritization as the APs that are not in the list.

If you want to steer a client, you should set the flag!

The flag can be set by adding {...,'abridged': true,...} to the normal
ubus call.

Signed-off-by: Nick Hainke <vincent@systemli.org>

package/network/services/hostapd/src/src/ap/ubus.c

@@ -937,6 +937,7 @@ enum {
 	WNM_DISASSOC_ADDR,
 	WNM_DISASSOC_DURATION,
 	WNM_DISASSOC_NEIGHBORS,
+	WNM_DISASSOC_ABRIDGED,
 	__WNM_DISASSOC_MAX,
 };
 
@@ -944,6 +945,7 @@ static const struct blobmsg_policy wnm_disassoc_policy[__WNM_DISASSOC_MAX] = {
 	[WNM_DISASSOC_ADDR] = { "addr", BLOBMSG_TYPE_STRING },
 	[WNM_DISASSOC_DURATION] { "duration", BLOBMSG_TYPE_INT32 },
 	[WNM_DISASSOC_NEIGHBORS] { "neighbors", BLOBMSG_TYPE_ARRAY },
+	[WNM_DISASSOC_ABRIDGED] { "abridged", BLOBMSG_TYPE_BOOL },
 };
 
 static int
@@ -1017,6 +1019,9 @@ hostapd_wnm_disassoc_imminent(struct ubus_context *ctx, struct ubus_object *obj,
 	if (nr)
 		req_mode |= WNM_BSS_TM_REQ_PREF_CAND_LIST_INCLUDED;
 
+	if (tb[WNM_DISASSOC_ABRIDGED] && blobmsg_get_bool(tb[WNM_DISASSOC_ABRIDGED]))
+		req_mode |= WNM_BSS_TM_REQ_ABRIDGED;
+
 	if (wnm_send_bss_tm_req(hapd, sta, req_mode, duration, 0, NULL,
 				NULL, nr, nr_len, NULL, 0))
 		return UBUS_STATUS_UNKNOWN_ERROR;