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MLD: Support multiple TBTT Information fields in RNR elements

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The Reduced Neighbor Report element can include one or more TBTT
Information fields.  Only the first one was parsed previously. Extend
this to use a loop to go through all included TBTT Information fields.

Signed-off-by: Ben Greear <greearb@candelatech.com>
This commit is contained in:
Ben Greear 2023-10-28 16:24:35 -07:00 committed by Jouni Malinen
parent c18aef6241
commit 0635f83e48
1 changed files with 15 additions and 3 deletions
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18
wpa_supplicant/sme.c
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@ -435,9 +435,18 @@ static void wpas_process_rnr(struct wpa_supplicant *wpa_s, const u8 *pos,
while (rnr_ie_len > sizeof(struct ieee80211_neighbor_ap_info)) {
const struct ieee80211_neighbor_ap_info *ap_info =
(const struct ieee80211_neighbor_ap_info *) pos;
/* The first TBTT Information field */
const u8 *data = ap_info->data;
size_t len = sizeof(struct ieee80211_neighbor_ap_info) +
ap_info->tbtt_info_len;
u8 tbtt_count;
size_t len;
int tbtt_i;
if (rnr_ie_len < sizeof(struct ieee80211_neighbor_ap_info))
break;
tbtt_count = (ap_info->tbtt_info_hdr >> 4) + 1;
len = sizeof(struct ieee80211_neighbor_ap_info) +
ap_info->tbtt_info_len * tbtt_count;
wpa_printf(MSG_DEBUG, "MLD: op_class=%u, channel=%u",
ap_info->op_class, ap_info->channel);
@ -451,7 +460,10 @@ static void wpas_process_rnr(struct wpa_supplicant *wpa_s, const u8 *pos,
continue;
}
wpas_process_tbtt_info(wpa_s, data);
for (tbtt_i = 0; tbtt_i < tbtt_count; tbtt_i++) {
wpas_process_tbtt_info(wpa_s, data);
data += ap_info->tbtt_info_len;
}
rnr_ie_len -= len;
pos += len;