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Date: Sun, 3 Dec 2006 19:19:01 +0100
From: Ivo van Doorn <ivdoorn@...il.com>
To: "John W. Linville" <linville@...driver.com>
Cc: netdev@...r.kernel.org
Subject: [PATCH 13/26] rt2x00: RX rate conversion
Each received packet has a signal field, this field
can be translated into the rate with which the frame
has been received.
Create a seperate function for this since the
conversion is equal for all drivers.
Signed-off-by Ivo van Doorn <IvDoorn@...il.com>
---
diff -rU3 wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt2400pci.c wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt2400pci.c
--- wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt2400pci.c 2006-12-03 13:45:34.000000000 +0100
+++ wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt2400pci.c 2006-12-03 13:49:47.000000000 +0100
@@ -1571,6 +1571,11 @@
memcpy(skb_put(skb, size), rt2x00_data_addr(entry),
size);
+ rt2x00dev->rx_params.rate = device_signal_to_rate(
+ &rt2x00dev->hw->modes[0],
+ rt2x00_get_field32(word2, RXD_W2_SIGNAL),
+ 0);
+
rt2x00dev->rx_params.ssi =
rt2x00_get_field32(word2, RXD_W2_RSSI);
diff -rU3 wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt2500pci.c wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt2500pci.c
--- wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt2500pci.c 2006-12-03 13:46:02.000000000 +0100
+++ wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt2500pci.c 2006-12-03 13:52:24.000000000 +0100
@@ -1728,6 +1728,11 @@
memcpy(skb_put(skb, size), rt2x00_data_addr(entry),
size);
+ rt2x00dev->rx_params.rate = device_signal_to_rate(
+ &rt2x00dev->hw->modes[0],
+ rt2x00_get_field32(word2, RXD_W2_SIGNAL),
+ rt2x00_get_field32(word0, RXD_W0_OFDM));
+
rt2x00dev->rx_params.ssi =
rt2x00_get_field32(word2, RXD_W2_RSSI);
diff -rU3 wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt2500usb.c wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt2500usb.c
--- wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt2500usb.c 2006-12-03 13:46:16.000000000 +0100
+++ wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt2500usb.c 2006-12-03 13:52:23.000000000 +0100
@@ -1683,6 +1683,11 @@
memcpy(skb_put(skb, size),
rt2x00_rxdata_addr(entry), size);
+ rt2x00dev->rx_params.rate = device_signal_to_rate(
+ &rt2x00dev->hw->modes[0],
+ rt2x00_get_field32(word1, RXD_W1_SIGNAL),
+ rt2x00_get_field32(word0, RXD_W0_OFDM));
+
rt2x00dev->rx_params.ssi =
rt2x00_get_field32(word1, RXD_W1_RSSI);
diff -rU3 wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt2x00.h wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt2x00.h
--- wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt2x00.h 2006-12-03 13:42:23.000000000 +0100
+++ wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt2x00.h 2006-12-03 13:48:57.000000000 +0100
@@ -1118,6 +1118,39 @@
entry->min_rssi_ack_delta = 0;
}
+static inline int device_signal_to_rate(struct ieee80211_hw_modes *mode,
+ u8 signal, u8 ofdm)
+{
+ unsigned int i;
+ u8 plcp;
+ u8 rate;
+
+ for (i = 0; i < mode->num_rates; i++) {
+ /*
+ * When frame was received with an OFDM bitrate,
+ * the signal is the PLCP value. If it was received with
+ * a CCK bitrate the signal is the rate in 0.5kbit/s.
+ */
+ if (!ofdm) {
+ rate = DEVICE_GET_RATE_FIELD(mode->rates[i].val, RATE);
+ if (rate == signal)
+ return mode->rates[i].val;
+ } else {
+ plcp = DEVICE_GET_RATE_FIELD(mode->rates[i].val, PLCP);
+ if (plcp == signal) {
+ /*
+ * Check for preamble bit.
+ */
+ if (signal & 0x08)
+ return mode->rates[i].val2;
+ return mode->rates[i].val;
+ }
+ }
+ }
+
+ return 0;
+}
+
/*
* Sequence number handlers.
*/
diff -rU3 wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt61pci.c wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt61pci.c
--- wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt61pci.c 2006-12-03 13:46:30.000000000 +0100
+++ wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt61pci.c 2006-12-03 13:52:24.000000000 +0100
@@ -2185,6 +2185,11 @@
memcpy(skb_put(skb, size), rt2x00_data_addr(entry),
size);
+ rt2x00dev->rx_params.rate = device_signal_to_rate(
+ &rt2x00dev->hw->modes[0],
+ rt2x00_get_field32(word1, RXD_W1_SIGNAL),
+ rt2x00_get_field32(word0, RXD_W0_OFDM));
+
rt2x00dev->rx_params.ssi =
rt2x00_get_field32(word1, RXD_W1_RSSI);
diff -rU3 wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt73usb.c wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt73usb.c
--- wireless-dev-interface/drivers/net/wireless/d80211/rt2x00/rt73usb.c 2006-12-03 13:46:42.000000000 +0100
+++ wireless-dev-signal/drivers/net/wireless/d80211/rt2x00/rt73usb.c 2006-12-03 13:52:23.000000000 +0100
@@ -1964,6 +1964,11 @@
memcpy(skb_put(skb, size),
rt2x00_data_addr(entry), size);
+ rt2x00dev->rx_params.rate = device_signal_to_rate(
+ &rt2x00dev->hw->modes[0],
+ rt2x00_get_field32(word1, RXD_W1_SIGNAL),
+ rt2x00_get_field32(word0, RXD_W0_OFDM));
+
rt2x00dev->rx_params.ssi =
rt2x00_get_field32(word1, RXD_W1_RSSI);
-
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