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Send CTRL-EVENT-REGDOM-CHANGE event on the parent interface

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The NL80211_CMD_WIPHY_REG_CHANGE can be handled by any of the
interfaces that are currently controlled by the wpa_supplicant.
However, some applications expect the REGDOM_CHANGE event to be
sent on the control interface of the initially added interface
(and do not expect the event on any of child interfaces).

To resolve this, when processing NL80211_CMD_WIPHY_REG_CHANGE,
find the highest parent in the chain, and use its control interface
to emit the CTRL-EVENT-REGDOM-CHANGE event.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
This commit is contained in:
Ilan Peer 2016-04-25 11:24:58 +03:00 committed by Jouni Malinen
parent df49b90e35
commit 3b11ad34eb
1 changed files with 10 additions and 1 deletions
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11
wpa_supplicant/events.c
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@ -3174,7 +3174,16 @@ static void wpa_supplicant_update_channel_list(
{ {
struct wpa_supplicant *ifs; struct wpa_supplicant *ifs;
wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s", /*
* To allow backwards compatibility with higher level layers that
* assumed the REGDOM_CHANGE event is sent over the initially added
* interface. Find the highest parent of this interface and use it to
* send the event.
*/
for (ifs = wpa_s; ifs->parent && ifs != ifs->parent; ifs = ifs->parent)
;
wpa_msg(ifs, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
reg_init_str(info->initiator), reg_type_str(info->type), reg_init_str(info->initiator), reg_type_str(info->type),
info->alpha2[0] ? " alpha2=" : "", info->alpha2[0] ? " alpha2=" : "",
info->alpha2[0] ? info->alpha2 : ""); info->alpha2[0] ? info->alpha2 : "");