1 files changed, 82 insertions, 2 deletions

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index f2920a3401c6..7bfc6ee6567c 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1139,6 +1139,63 @@ static int ath12k_mac_op_config(struct ieee80211_hw *hw, u32 changed)
 	return ret;
 }
 
+static int ath12k_mac_setup_bcn_p2p_ie(struct ath12k_vif *arvif,
+				       struct sk_buff *bcn)
+{
+	struct ath12k *ar = arvif->ar;
+	struct ieee80211_mgmt *mgmt;
+	const u8 *p2p_ie;
+	int ret;
+
+	mgmt = (void *)bcn->data;
+	p2p_ie = cfg80211_find_vendor_ie(WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P,
+					 mgmt->u.beacon.variable,
+					 bcn->len - (mgmt->u.beacon.variable -
+						     bcn->data));
+	if (!p2p_ie) {
+		ath12k_warn(ar->ab, "no P2P ie found in beacon\n");
+		return -ENOENT;
+	}
+
+	ret = ath12k_wmi_p2p_go_bcn_ie(ar, arvif->vdev_id, p2p_ie);
+	if (ret) {
+		ath12k_warn(ar->ab, "failed to submit P2P GO bcn ie for vdev %i: %d\n",
+			    arvif->vdev_id, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int ath12k_mac_remove_vendor_ie(struct sk_buff *skb, unsigned int oui,
+				       u8 oui_type, size_t ie_offset)
+{
+	const u8 *next, *end;
+	size_t len;
+	u8 *ie;
+
+	if (WARN_ON(skb->len < ie_offset))
+		return -EINVAL;
+
+	ie = (u8 *)cfg80211_find_vendor_ie(oui, oui_type,
+					   skb->data + ie_offset,
+					   skb->len - ie_offset);
+	if (!ie)
+		return -ENOENT;
+
+	len = ie[1] + 2;
+	end = skb->data + skb->len;
+	next = ie + len;
+
+	if (WARN_ON(next > end))
+		return -EINVAL;
+
+	memmove(ie, next, end - next);
+	skb_trim(skb, skb->len - len);
+
+	return 0;
+}
+
 static int ath12k_mac_setup_bcn_tmpl(struct ath12k_vif *arvif)
 {
 	struct ath12k *ar = arvif->ar;
@@ -1171,14 +1228,37 @@ static int ath12k_mac_setup_bcn_tmpl(struct ath12k_vif *arvif)
 				    ies, (skb_tail_pointer(bcn) - ies)))
 		arvif->wpaie_present = true;
 
-	ret = ath12k_wmi_bcn_tmpl(ar, arvif->vdev_id, &offs, bcn);
+	if (arvif->vif->type == NL80211_IFTYPE_AP && arvif->vif->p2p) {
+		ret = ath12k_mac_setup_bcn_p2p_ie(arvif, bcn);
+		if (ret) {
+			ath12k_warn(ab, "failed to setup P2P GO bcn ie: %d\n",
+				    ret);
+			goto free_bcn_skb;
+		}
 
-	kfree_skb(bcn);
+		/* P2P IE is inserted by firmware automatically (as
+		 * configured above) so remove it from the base beacon
+		 * template to avoid duplicate P2P IEs in beacon frames.
+		 */
+		ret = ath12k_mac_remove_vendor_ie(bcn, WLAN_OUI_WFA,
+						  WLAN_OUI_TYPE_WFA_P2P,
+						  offsetof(struct ieee80211_mgmt,
+							   u.beacon.variable));
+		if (ret) {
+			ath12k_warn(ab, "failed to remove P2P vendor ie: %d\n",
+				    ret);
+			goto free_bcn_skb;
+		}
+	}
+
+	ret = ath12k_wmi_bcn_tmpl(ar, arvif->vdev_id, &offs, bcn);
 
 	if (ret)
 		ath12k_warn(ab, "failed to submit beacon template command: %d\n",
 			    ret);
 
+free_bcn_skb:
+	kfree_skb(bcn);
 	return ret;
 }