1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 58c357eaf216..fc4ec48eda12 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -365,6 +365,49 @@ static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 }
 
 
+static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
+{
+	struct mac80211_hwsim_data *data = hw->priv;
+	struct sk_buff *skb;
+	struct hwsim_radiotap_hdr *hdr;
+	u16 flags;
+	struct ieee80211_hdr *hdr11;
+
+	if (!netif_running(hwsim_mon))
+		return;
+
+	skb = dev_alloc_skb(100);
+	if (skb == NULL)
+		return;
+
+	hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
+	hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
+	hdr->hdr.it_pad = 0;
+	hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
+	hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
+					  (1 << IEEE80211_RADIOTAP_CHANNEL));
+	hdr->rt_flags = 0;
+	hdr->rt_rate = 0;
+	hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
+	flags = IEEE80211_CHAN_2GHZ;
+	hdr->rt_chbitmask = cpu_to_le16(flags);
+
+	hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
+	hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
+					   IEEE80211_STYPE_ACK);
+	hdr11->duration_id = cpu_to_le16(0);
+	memcpy(hdr11->addr1, addr, ETH_ALEN);
+
+	skb->dev = hwsim_mon;
+	skb_set_mac_header(skb, 0);
+	skb->ip_summed = CHECKSUM_UNNECESSARY;
+	skb->pkt_type = PACKET_OTHERHOST;
+	skb->protocol = htons(ETH_P_802_2);
+	memset(skb->cb, 0, sizeof(skb->cb));
+	netif_rx(skb);
+}
+
+
 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 			   struct sk_buff *skb)
 {
@@ -471,6 +514,10 @@ static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 	}
 
 	ack = mac80211_hwsim_tx_frame(hw, skb);
+	if (ack && skb->len >= 16) {
+		struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+		mac80211_hwsim_monitor_ack(hw, hdr->addr2);
+	}
 
 	txi = IEEE80211_SKB_CB(skb);