b43: Fix rxheader channel parsing

This patch fixes the parsing of the RX data header channel field.

The current code parses the header incorrectly and passes a wrong
channel number and frequency for each frame to mac80211.
The FIXMEs added by this patch don't matter for now as the code
where they live won't get executed anyway. They will be fixed later.

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

1 files changed, 19 insertions, 8 deletions

diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index 0bd6f8a348a..3307ba1856b 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -531,21 +531,32 @@ void b43_rx(struct b43_wldev *dev, struct sk_buff *skb, const void *_rxhdr)
 	switch (chanstat & B43_RX_CHAN_PHYTYPE) {
 	case B43_PHYTYPE_A:
 		status.phymode = MODE_IEEE80211A;
-		status.freq = chanid;
-		status.channel = b43_freq_to_channel_a(chanid);
-		break;
-	case B43_PHYTYPE_B:
-		status.phymode = MODE_IEEE80211B;
-		status.freq = chanid + 2400;
-		status.channel = b43_freq_to_channel_bg(chanid + 2400);
+		B43_WARN_ON(1);
+		/* FIXME: We don't really know which value the "chanid" contains.
+		 *        So the following assignment might be wrong. */
+		status.channel = chanid;
+		status.freq = b43_channel_to_freq_5ghz(status.channel);
 		break;
 	case B43_PHYTYPE_G:
 		status.phymode = MODE_IEEE80211G;
+		/* chanid is the radio channel cookie value as used
+		 * to tune the radio. */
 		status.freq = chanid + 2400;
-		status.channel = b43_freq_to_channel_bg(chanid + 2400);
+		status.channel = b43_freq_to_channel_2ghz(status.freq);
+		break;
+	case B43_PHYTYPE_N:
+		status.phymode = 0xDEAD /*FIXME MODE_IEEE80211N*/;
+		/* chanid is the SHM channel cookie. Which is the plain
+		 * channel number in b43. */
+		status.channel = chanid;
+		if (chanstat & B43_RX_CHAN_5GHZ)
+			status.freq = b43_freq_to_channel_5ghz(status.freq);
+		else
+			status.freq = b43_freq_to_channel_2ghz(status.freq);
 		break;
 	default:
 		B43_WARN_ON(1);
+		goto drop;
 	}
 
 	dev->stats.last_rx = jiffies;