From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
If a station requests a bss transition, then send add any
configured neighbors to the response.
Signed-off-by: Ben Greear <greearb@xxxxxxxxxxxxxxx>
---
src/ap/wnm_ap.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/src/ap/wnm_ap.c b/src/ap/wnm_ap.c
index 27c69d3..cef44ce 100644
--- a/src/ap/wnm_ap.c
+++ b/src/ap/wnm_ap.c
@@ -345,8 +345,9 @@ static int ieee802_11_send_bss_trans_mgmt_request(struct hostapd_data *hapd,
size_t len;
u8 *pos;
int res;
+ struct wpabuf *buf;
- mgmt = os_zalloc(sizeof(*mgmt));
+ mgmt = os_zalloc(IEEE80211_MAX_MMPDU_SIZE);
if (mgmt == NULL)
return -1;
os_memcpy(mgmt->da, addr, ETH_ALEN);
@@ -357,11 +358,33 @@ static int ieee802_11_send_bss_trans_mgmt_request(struct hostapd_data *hapd,
mgmt->u.action.category = WLAN_ACTION_WNM;
mgmt->u.action.u.bss_tm_req.action = WNM_BSS_TRANS_MGMT_REQ;
mgmt->u.action.u.bss_tm_req.dialog_token = dialog_token;
+ /* set 0x1 flag for prefered candidate list included.
+ * see: 9.6.14.9 BSS Transition Management Request frame format
+ */
mgmt->u.action.u.bss_tm_req.req_mode = 0;
mgmt->u.action.u.bss_tm_req.disassoc_timer = host_to_le16(0);
mgmt->u.action.u.bss_tm_req.validity_interval = 1;
pos = mgmt->u.action.u.bss_tm_req.variable;
+ buf = wpabuf_alloc(IEEE80211_MAX_MMPDU_SIZE - sizeof(*mgmt));
+ if (buf) {
+ /* Grab neighbor list */
+ /* TODO: Maybe round-robin and only send one?
+ * Or take load into consideration?
+ * Maybe we should skip our own entry?
+ */
+ int lci = 1; /* add lci sub-element */
+ int civic = 1; /* add civic sub-element */
+ int lci_age = 0xffff; /* maximum age, send all */
+ hostapd_rrm_add_neigh_report_ies(hapd, buf, NULL, lci, civic, lci_age);
+ if (wpabuf_len(buf)) {
+ mgmt->u.action.u.bss_tm_req.req_mode = 0x1;
+ os_memcpy(pos, wpabuf_head(buf), wpabuf_len(buf));
+ pos += wpabuf_len(buf);
+ }
+ wpabuf_free(buf);
+ }
+
wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Request to "
MACSTR " dialog_token=%u req_mode=0x%x disassoc_timer=%u "
"validity_interval=%u",
--
2.7.5
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