Hello! Some good news:
A fix has been recently committed to the mainline rtl8187 driver, which for me makes it work without issue on rtl8187b device on the Yeeloong: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6410db593e8c1b2b79a2f18554310d6da9415584 Before, I had only a very low quality link when I tested the rtl8187 driver, it almost couldn't see the access point at all. This is now solved, it now works without any problem. Not sure about long-term stability of this driver, or if changing from rtl8187b to rtl8187 will help fix my lock-up issue discussed in the previous thread - will need to test that some more. As a nice bonus, my Yeeloong now flashes the wifi led as data is transmitted or received -- never seen that to work on rtl8187b. Another difference between these drivers I spotted: rtl8187b shows Link Quality as "90/100", whereas rtl8187 has "70/70" there. Just in case I am attaching the exact patch which I just applied to 2.6.38 and rtl8187 module in that kernel started to work fine. This patch is already included in the mainline 2.6.38.1 release. -- With respect, Roman
diff --git a/drivers/net/wireless/rtl818x/rtl8187/dev.c b/drivers/net/wireless/rtl818x/rtl8187/dev.c
index c5a5e78..1e0be14 100644
--- a/drivers/net/wireless/rtl818x/rtl8187/dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8187/dev.c
@@ -869,23 +869,35 @@ static void rtl8187_work(struct work_struct *work)
/* The RTL8187 returns the retry count through register 0xFFFA. In
* addition, it appears to be a cumulative retry count, not the
* value for the current TX packet. When multiple TX entries are
- * queued, the retry count will be valid for the last one in the queue.
- * The "error" should not matter for purposes of rate setting. */
+ * waiting in the queue, the retry count will be the total for all.
+ * The "error" may matter for purposes of rate setting, but there is
+ * no other choice with this hardware.
+ */
struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
work.work);
struct ieee80211_tx_info *info;
struct ieee80211_hw *dev = priv->dev;
static u16 retry;
u16 tmp;
+ u16 avg_retry;
+ int length;
mutex_lock(&priv->conf_mutex);
tmp = rtl818x_ioread16(priv, (__le16 *)0xFFFA);
+ length = skb_queue_len(&priv->b_tx_status.queue);
+ if (unlikely(!length))
+ length = 1;
+ if (unlikely(tmp < retry))
+ tmp = retry;
+ avg_retry = (tmp - retry) / length;
while (skb_queue_len(&priv->b_tx_status.queue) > 0) {
struct sk_buff *old_skb;
old_skb = skb_dequeue(&priv->b_tx_status.queue);
info = IEEE80211_SKB_CB(old_skb);
- info->status.rates[0].count = tmp - retry + 1;
+ info->status.rates[0].count = avg_retry + 1;
+ if (info->status.rates[0].count > RETRY_COUNT)
+ info->flags &= ~IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(dev, old_skb);
}
retry = tmp;
@@ -931,8 +943,8 @@ static int rtl8187_start(struct ieee80211_hw *dev)
rtl818x_iowrite32(priv, &priv->map->TX_CONF,
RTL818X_TX_CONF_HW_SEQNUM |
RTL818X_TX_CONF_DISREQQSIZE |
- (7 << 8 /* short retry limit */) |
- (7 << 0 /* long retry limit */) |
+ (RETRY_COUNT << 8 /* short retry limit */) |
+ (RETRY_COUNT << 0 /* long retry limit */) |
(7 << 21 /* MAX TX DMA */));
rtl8187_init_urbs(dev);
rtl8187b_init_status_urb(dev);
@@ -1376,6 +1388,9 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
IEEE80211_HW_SIGNAL_DBM |
IEEE80211_HW_RX_INCLUDES_FCS;
+ /* Initialize rate-control variables */
+ dev->max_rates = 1;
+ dev->max_rate_tries = RETRY_COUNT;
eeprom.data = dev;
eeprom.register_read = rtl8187_eeprom_register_read;
diff --git a/drivers/net/wireless/rtl818x/rtl8187/rtl8187.h b/drivers/net/wireless/rtl818x/rtl8187/rtl8187.h
index 0d7b142..f1cc907 100644
--- a/drivers/net/wireless/rtl818x/rtl8187/rtl8187.h
+++ b/drivers/net/wireless/rtl818x/rtl8187/rtl8187.h
@@ -35,6 +35,8 @@
#define RFKILL_MASK_8187_89_97 0x2
#define RFKILL_MASK_8198 0x4
+#define RETRY_COUNT 7
+
struct rtl8187_rx_info {
struct urb *urb;
struct ieee80211_hw *dev;
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