mac80211: provide sequence numbers

I've come to think that not providing sequence numbers for
the normal STA mode case was a mistake, at least two drivers
now had to implement code they wouldn't otherwise need, and
I believe at76_usb and adm8211 might be broken.

This patch makes mac80211 assign a sequence number to all
those frames that need one except beacons. That means that
if a driver only implements modes that do not do beaconing
it need not worry about the sequence number.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 14 deletions

diff --git a/drivers/net/wireless/rtl8187_dev.c b/drivers/net/wireless/rtl8187_dev.c
index 2c69ab37c650..16f2fe2d849e 100644
--- a/drivers/net/wireless/rtl8187_dev.c
+++ b/drivers/net/wireless/rtl8187_dev.c
@@ -241,20 +241,6 @@ static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
                         ep = epmap[skb_get_queue_mapping(skb)];
         }
 
-        /* FIXME: The sequence that follows is needed for this driver to
-         * work with mac80211 since "mac80211: fix TX sequence numbers".
-         * As with the temporary code in rt2x00, changes will be needed
-         * to get proper sequence numbers on beacons. In addition, this
-         * patch places the sequence number in the hardware state, which
-         * limits us to a single virtual state.
-         */
-        if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
-                if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
-                        priv->seqno += 0x10;
-                ieee80211hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
-                ieee80211hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
-        }
-
         info->driver_data[0] = dev;
         info->driver_data[1] = urb;
 
@@ -1187,6 +1173,10 @@ static int __devinit rtl8187_probe(struct usb_interface *intf,
                 dev->max_signal = 65;
         }
 
+        /*
+         * XXX: Once this driver supports anything that requires
+         *      beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
+         */
         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 
         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)