b43: Pass more RX flags to mac80211

This changes the RX handler to pass more status flags to mac80211.
It also changes part of the drop policy, if bad frames were requested. (Note that
currently mac80211 will throw a WARN_ON in that case. But nothing bad will happen).

This also removes some obsolete unused timestamping code.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 13 insertions, 4 deletions

diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index eae9b805265..0f53c7e5e01 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -538,8 +538,14 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
         chanstat = le16_to_cpu(rxhdr->channel);
         phytype = chanstat & B43_RX_CHAN_PHYTYPE;
 
-        if (macstat & B43_RX_MAC_FCSERR)
+        if (unlikely(macstat & B43_RX_MAC_FCSERR)) {
                 dev->wl->ieee_stats.dot11FCSErrorCount++;
+                status.flag |= RX_FLAG_FAILED_FCS_CRC;
+        }
+        if (unlikely(phystat0 & (B43_RX_PHYST0_PLCPHCF | B43_RX_PHYST0_PLCPFV)))
+                status.flag |= RX_FLAG_FAILED_PLCP_CRC;
+        if (phystat0 & B43_RX_PHYST0_SHORTPRMBL)
+                status.flag |= RX_FLAG_SHORTPRE;
         if (macstat & B43_RX_MAC_DECERR) {
                 /* Decryption with the given key failed.
                  * Drop the packet. We also won't be able to decrypt it with
@@ -606,8 +612,12 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
                                                 phytype == B43_PHYTYPE_A);
         else
                 status.rate_idx = b43_plcp_get_bitrate_idx_cck(plcp);
-        if (unlikely(status.rate_idx == -1))
-                goto drop;
+        if (unlikely(status.rate_idx == -1)) {
+                /* PLCP seems to be corrupted.
+                 * Drop the frame, if we are not interested in corrupted frames. */
+                if (!(dev->wl->filter_flags & FIF_PLCPFAIL))
+                        goto drop;
+        }
         status.antenna = !!(phystat0 & B43_RX_PHYST0_ANT);
 
         /*
@@ -661,7 +671,6 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
                 goto drop;
         }
 
-        dev->stats.last_rx = jiffies;
         ieee80211_rx_irqsafe(dev->wl->hw, skb, &status);
 
         return;