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P2P: Apply unsafe frequency rules to available channels

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This adds a QCA vendor specific nl80211 event to allow the driver to
indicate a list of frequency ranges that should be avoided due to
interference or possible known co-existance constraints. Such
frequencies are marked as not allowed for P2P use to force groups to be
formed on different channels.

If a P2P GO is operating on a channel that the driver recommended not to
use, a notification about this is sent on the control interface and
upper layer code may decide to tear down the group and optionally
restart it on another channel. As a TODO item, this could also be changed
to use CSA to avoid removing the group.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Arif Hussain 2014-01-24 16:14:29 +02:00 • committed by Jouni Malinen
parent 1682c62360
commit 253f2e3795
9 changed files with 148 additions and 1 deletions
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18
src/common/qca-vendor.h
View file

@ -24,10 +24,28 @@
* @QCA_NL80211_VENDOR_SUBCMD_UNSPEC: Reserved value 0
*
* @QCA_NL80211_VENDOR_SUBCMD_TEST: Test command/event
*
* @QCA_NL80211_VENDOR_SUBCMD_AVOID_FREQUENCY: Recommendation of frequency
* ranges to avoid to reduce issues due to interference or internal
* co-existence information in the driver. The event data structure is
* defined in struct qca_avoid_freq_list.
*/
enum qca_nl80211_vendor_subcmds {
QCA_NL80211_VENDOR_SUBCMD_UNSPEC = 0,
QCA_NL80211_VENDOR_SUBCMD_TEST = 1,
/* subcmds 2..9 not yet allocated */
QCA_NL80211_VENDOR_SUBCMD_AVOID_FREQUENCY = 10,
};
struct qca_avoid_freq_range {
u32 start_freq;
u32 end_freq;
} STRUCT_PACKED;
struct qca_avoid_freq_list {
u32 count;
struct qca_avoid_freq_range range[0];
} STRUCT_PACKED;
#endif /* QCA_VENDOR_H */

3
src/common/wpa_ctrl.h
View file

@ -74,6 +74,8 @@ extern "C" {
* be used again.
*/
#define WPA_EVENT_FREQ_CONFLICT "CTRL-EVENT-FREQ-CONFLICT "
/** Frequency ranges that the driver recommends to avoid */
#define WPA_EVENT_AVOID_FREQ "CTRL-EVENT-AVOID-FREQ "
/** WPS overlap detected in PBC mode */
#define WPS_EVENT_OVERLAP "WPS-OVERLAP-DETECTED "
/** Available WPS AP with active PBC found in scan results */
@ -151,6 +153,7 @@ extern "C" {
/* parameters: <PMF enabled> <timeout in ms> <Session Information URL> */
#define ESS_DISASSOC_IMMINENT "ESS-DISASSOC-IMMINENT "
#define P2P_EVENT_REMOVE_AND_REFORM_GROUP "P2P-REMOVE-AND-REFORM-GROUP "
#define INTERWORKING_AP "INTERWORKING-AP "
#define INTERWORKING_NO_MATCH "INTERWORKING-NO-MATCH "