From: Johannes Berg <johannes.berg@xxxxxxxxx>
While connected to a GO, parse the P2P NoA attribute
and pass the CT Window and opportunistic powersave
parameters to the driver.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
include/net/mac80211.h | 7 +++++++
net/mac80211/ieee80211_i.h | 2 ++
net/mac80211/mlme.c | 40 ++++++++++++++++++++++++++++++++++++++++
net/mac80211/trace.h | 4 ++++
4 files changed, 53 insertions(+)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index dfa589b..23803ad 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -208,6 +208,8 @@ struct ieee80211_chanctx_conf {
* @BSS_CHANGED_AP_PROBE_RESP: Probe Response changed for this BSS (AP mode)
* @BSS_CHANGED_PS: PS changed for this BSS (STA mode)
* @BSS_CHANGED_TXPOWER: TX power setting changed for this interface
+ * @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS)
+ * changed (currently only in P2P client mode, GO mode will be later)
*/
enum ieee80211_bss_change {
BSS_CHANGED_ASSOC = 1<<0,
@@ -229,6 +231,7 @@ enum ieee80211_bss_change {
BSS_CHANGED_AP_PROBE_RESP = 1<<16,
BSS_CHANGED_PS = 1<<17,
BSS_CHANGED_TXPOWER = 1<<18,
+ BSS_CHANGED_P2P_PS = 1<<19,
/* when adding here, make sure to change ieee80211_reconfig */
};
@@ -312,6 +315,8 @@ enum ieee80211_rssi_event {
* @ssid_len: Length of SSID given in @ssid.
* @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode.
* @txpower: TX power in dBm
+ * @p2p_ctwindow: P2P CTWindow, only for P2P client interfaces
+ * @p2p_oppps: P2P opportunistic PS is enabled
*/
struct ieee80211_bss_conf {
const u8 *bssid;
@@ -345,6 +350,8 @@ struct ieee80211_bss_conf {
size_t ssid_len;
bool hidden_ssid;
int txpower;
+ u8 p2p_ctwindow;
+ bool p2p_oppps;
};
/**
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 37c08d3..904b4d8 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -473,6 +473,8 @@ struct ieee80211_if_managed {
u8 use_4addr;
+ u8 p2p_noa_index;
+
/* Signal strength from the last Beacon frame in the current BSS. */
int last_beacon_signal;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 35afbbc..856e562 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1364,6 +1364,22 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
+ if (sdata->vif.p2p) {
+ u8 noa[2];
+ int ret;
+
+ ret = cfg80211_get_p2p_attr(cbss->information_elements,
+ cbss->len_information_elements,
+ IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
+ noa, sizeof(noa));
+ if (ret >= 2) {
+ bss_conf->p2p_oppps = noa[1] & 0x80;
+ bss_conf->p2p_ctwindow = noa[1] & 0x7f;
+ bss_info_changed |= BSS_CHANGED_P2P_PS;
+ sdata->u.mgd.p2p_noa_index = noa[0];
+ }
+ }
+
/* just to be sure */
ieee80211_stop_poll(sdata);
@@ -1486,6 +1502,9 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
changed |= BSS_CHANGED_ASSOC;
sdata->vif.bss_conf.assoc = false;
+ sdata->vif.bss_conf.p2p_ctwindow = 0;
+ sdata->vif.bss_conf.p2p_oppps = false;
+
/* on the next assoc, re-program HT parameters */
memset(&ifmgd->ht_capa, 0, sizeof(ifmgd->ht_capa));
memset(&ifmgd->ht_capa_mask, 0, sizeof(ifmgd->ht_capa_mask));
@@ -2617,6 +2636,27 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
}
}
+ if (sdata->vif.p2p) {
+ u8 noa[2];
+ int ret;
+
+ ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
+ len - baselen,
+ IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
+ noa, sizeof(noa));
+ if (ret >= 2 && sdata->u.mgd.p2p_noa_index != noa[0]) {
+ bss_conf->p2p_oppps = noa[1] & 0x80;
+ bss_conf->p2p_ctwindow = noa[1] & 0x7f;
+ changed |= BSS_CHANGED_P2P_PS;
+ sdata->u.mgd.p2p_noa_index = noa[0];
+ /*
+ * make sure we update all information, the CRC
+ * mechanism doesn't look at P2P attributes.
+ */
+ ifmgd->beacon_crc_valid = false;
+ }
+ }
+
if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
return;
ifmgd->beacon_crc = ncrc;
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index eeebbd9..7794e53 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -343,6 +343,8 @@ TRACE_EVENT(drv_bss_info_changed,
__dynamic_array(u8, ssid, info->ssid_len);
__field(bool, hidden_ssid);
__field(int, txpower)
+ __field(u8, p2p_ctwindow)
+ __field(bool, p2p_oppps)
),
TP_fast_assign(
@@ -378,6 +380,8 @@ TRACE_EVENT(drv_bss_info_changed,
memcpy(__get_dynamic_array(ssid), info->ssid, info->ssid_len);
__entry->hidden_ssid = info->hidden_ssid;
__entry->txpower = info->txpower;
+ __entry->p2p_ctwindow = info->p2p_ctwindow;
+ __entry->p2p_oppps = info->p2p_oppps;
),
TP_printk(
--
1.8.0
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
