From: Johannes Berg <johannes.berg@xxxxxxxxx>
Some devices like the current iwlwifi implementation
require that the P2P interface address match the P2P
Device address (only one P2P interface is supported.)
Add the HW flag IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF
that allows drivers to request that P2P Interfaces
added while a P2P Device is active get the same MAC
address by default.
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
include/net/mac80211.h | 5 +++++
net/mac80211/iface.c | 15 ++++++++++++++-
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index bb86aa6..924b6c1 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1203,6 +1203,10 @@ enum sta_notify_cmd {
* queue mapping in order to use different queues (not just one per AC)
* for different virtual interfaces. See the doc section on HW queue
* control for more details.
+ *
+ * @IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF: Use the P2P Device address for any
+ * P2P Interface. This will be honoured even if more than one interface
+ * is supported.
*/
enum ieee80211_hw_flags {
IEEE80211_HW_HAS_RATE_CONTROL = 1<<0,
@@ -1230,6 +1234,7 @@ enum ieee80211_hw_flags {
IEEE80211_HW_AP_LINK_PS = 1<<22,
IEEE80211_HW_TX_AMPDU_SETUP_IN_HW = 1<<23,
IEEE80211_HW_SCAN_WHILE_IDLE = 1<<24,
+ IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF = 1<<25,
};
/**
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index aa985ea..f280e1f 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1320,7 +1320,6 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
local->hw.wiphy->n_addresses <= 1)
return;
-
mutex_lock(&local->iflist_mtx);
switch (type) {
@@ -1338,6 +1337,19 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
}
/* keep default if no AP interface present */
break;
+ case NL80211_IFTYPE_P2P_CLIENT:
+ case NL80211_IFTYPE_P2P_GO:
+ if (local->hw.flags & IEEE80211_HW_P2P_DEV_ADDR_FOR_INTF) {
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE)
+ continue;
+ if (!ieee80211_sdata_running(sdata))
+ continue;
+ memcpy(perm_addr, sdata->vif.addr, ETH_ALEN);
+ goto out_unlock;
+ }
+ }
+ /* otherwise fall through */
default:
/* assign a new address if possible -- try n_addresses first */
for (i = 0; i < local->hw.wiphy->n_addresses; i++) {
@@ -1412,6 +1424,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
break;
}
+ out_unlock:
mutex_unlock(&local->iflist_mtx);
}
--
1.7.10.4
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