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P2P: Validate GO operating channel on channel list changes

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On receiving CHANNEL_LIST_CHANGED event from driver, verify that local
GO (if any) is operating in valid frequency. If not, we should remove
the group and reform on valid frequency. Indicate this similarly to the
avoid-frequency notification (i.e., a control interface message for
upper layers to react to this for now; potentially CSA later).

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Edhar, Mahesh Kumar 2014-05-05 12:03:21 +05:30 committed by Jouni Malinen
parent fb2ac53df1
commit 7b42862ac8
1 changed files with 23 additions and 0 deletions
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23
wpa_supplicant/p2p_supplicant.c
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@ -6413,6 +6413,7 @@ void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
{
struct p2p_channels chan, cli_chan;
struct wpa_supplicant *ifs;
if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
return;
@ -6426,6 +6427,28 @@ void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
}
p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
int freq;
if (!ifs->current_ssid ||
!ifs->current_ssid->p2p_group ||
(ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
continue;
freq = ifs->current_ssid->frequency;
if (freq_included(&chan, freq)) {
wpa_dbg(ifs, MSG_DEBUG,
"P2P GO operating frequency %d MHz in valid range",
freq);
continue;
}
wpa_dbg(ifs, MSG_DEBUG,
"P2P GO operating in invalid frequency %d MHz", freq);
/* TODO: Consider using CSA or removing the group within
* wpa_supplicant */
wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
}
}