From 5adf6d63c1697ce1835daf2b5393488a71ee0dca Mon Sep 17 00:00:00 2001 From: Ivo van Doorn Date: Sun, 20 Jul 2008 18:03:38 +0200 Subject: rt2x00: Fix QOS sequence counting When IEEE80211_TX_CTL_ASSIGN_SEQ is not set, the driver should disable hardware sequence counting to make sure the mac80211 provided counter is used. This fixes QOS sequence counting, since that is one of the cases where mac80211 provides a seperate sequence counter. By moving the sequence counting code to rt2x00queue we make sure that _all_ frames get the sequence counter, including RTS/CTS and Beacon frames. Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2x00queue.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'drivers/net/wireless/rt2x00/rt2x00queue.c') diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c index 7f442030f5a..7b581a370fd 100644 --- a/drivers/net/wireless/rt2x00/rt2x00queue.c +++ b/drivers/net/wireless/rt2x00/rt2x00queue.c @@ -120,6 +120,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, { struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev; struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb); + struct rt2x00_intf *intf = vif_to_intf(tx_info->control.vif); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)entry->skb->data; struct ieee80211_rate *rate = ieee80211_get_tx_rate(rt2x00dev->hw, tx_info); @@ -199,6 +200,31 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, txdesc->ifs = IFS_SIFS; } + /* + * Hardware should insert sequence counter. + * FIXME: We insert a software sequence counter first for + * hardware that doesn't support hardware sequence counting. + * + * This is wrong because beacons are not getting sequence + * numbers assigned properly. + * + * A secondary problem exists for drivers that cannot toggle + * sequence counting per-frame, since those will override the + * sequence counter given by mac80211. + */ + if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { + spin_lock(&intf->lock); + + if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags)) + intf->seqno += 0x10; + hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); + hdr->seq_ctrl |= cpu_to_le16(intf->seqno); + + spin_unlock(&intf->lock); + + __set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags); + } + /* * PLCP setup * Length calculation depends on OFDM/CCK rate. -- cgit v1.2.3-70-g09d2