[PATCH 4/6] staging: vt6655: vnt_rx_data add track rsr and new_rsr errors

[Malcolm Priestley]

If not rsr & RSR_CRCOK report RX_FLAG_FAILED_FCS_CRC

If not rsr & (RSR_IVLDTYP | RSR_IVLDLEN) drop packet

If not NEWRSR_DECRYPTOK on new_rsr drop packet.

Signed-off-by: Malcolm Priestley <tvbox...@gmail.com>
---
 drivers/staging/vt6655/dpc.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/vt6655/dpc.c b/drivers/staging/vt6655/dpc.c
index 11cc090..3c5b87f 100644
--- a/drivers/staging/vt6655/dpc.c
+++ b/drivers/staging/vt6655/dpc.c
@@ -91,6 +91,8 @@ static bool vnt_rx_data(struct vnt_private *priv, struct 
sk_buff *skb,
        new_rsr = skb_data + bytes_received - 3;
        rssi = skb_data + bytes_received - 2;
        rsr = skb_data + bytes_received - 1;
+       if (*rsr & (RSR_IVLDTYP | RSR_IVLDLEN))
+               return false;
 
        RFvRSSITodBm(priv, *rssi, &rx_dbm);
 
@@ -106,6 +108,9 @@ static bool vnt_rx_data(struct vnt_private *priv, struct 
sk_buff *skb,
        rx_status.flag = 0;
        rx_status.freq = hw->conf.chandef.chan->center_freq;
 
+       if (!(*rsr & RSR_CRCOK))
+               rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
+
        hdr = (struct ieee80211_hdr *)(skb->data);
        fc = hdr->frame_control;
 
@@ -113,7 +118,11 @@ static bool vnt_rx_data(struct vnt_private *priv, struct 
sk_buff *skb,
 
        if (ieee80211_has_protected(fc)) {
                if (priv->byLocalID > REV_ID_VT3253_A1)
-                       rx_status.flag = RX_FLAG_DECRYPTED;
+                       rx_status.flag |= RX_FLAG_DECRYPTED;
+
+               /* Drop packet */
+               if (!(*new_rsr & NEWRSR_DECRYPTOK))
+                       return false;
        }
 
        memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
-- 
2.1.0

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