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rt2x00: Generate sw sequence numbers only for devices that need it 

Newer devices like rt2800* own a hardware sequence counter and thus
don't need to use a software sequence counter at all. Add a new driver
flag to shortcut the software sequence number generation on devices that
don't need it.

rt61pci, rt73usb and rt2800* seem to make use of a hw sequence counter
while rt2400pci and rt2500* need to do it in software.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa 2011-03-03 19:42:01 +01:00 committed by John W. Linville
parent 208f19dcee
commit 7fe7ee7776
5 changed files with 11 additions and 4 deletions
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1
drivers/net/wireless/rt2x00/rt2400pci.c
View File

@ -1641,6 +1641,7 @@ static int rt2400pci_probe_hw(struct rt2x00_dev *rt2x00dev)
*/
__set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
__set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
__set_bit(DRIVER_REQUIRE_SW_SEQNO, &rt2x00dev->flags);
/*
* Set the rssi offset.

1
drivers/net/wireless/rt2x00/rt2500pci.c
View File

@ -1959,6 +1959,7 @@ static int rt2500pci_probe_hw(struct rt2x00_dev *rt2x00dev)
*/
__set_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags);
__set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
__set_bit(DRIVER_REQUIRE_SW_SEQNO, &rt2x00dev->flags);
/*
* Set the rssi offset.

1
drivers/net/wireless/rt2x00/rt2500usb.c
View File

@ -1795,6 +1795,7 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
__set_bit(DRIVER_REQUIRE_COPY_IV, &rt2x00dev->flags);
}
__set_bit(DRIVER_SUPPORT_WATCHDOG, &rt2x00dev->flags);
__set_bit(DRIVER_REQUIRE_SW_SEQNO, &rt2x00dev->flags);
/*
* Set the rssi offset.

1
drivers/net/wireless/rt2x00/rt2x00.h
View File

@ -662,6 +662,7 @@ enum rt2x00_flags {
DRIVER_REQUIRE_L2PAD,
DRIVER_REQUIRE_TXSTATUS_FIFO,
DRIVER_REQUIRE_TASKLET_CONTEXT,
DRIVER_REQUIRE_SW_SEQNO,
/*
* Driver features

11
drivers/net/wireless/rt2x00/rt2x00queue.c
View File

@ -224,10 +224,14 @@ static void rt2x00queue_create_tx_descriptor_seq(struct queue_entry *entry,
if (!(tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ))
return;
__set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
if (!test_bit(DRIVER_REQUIRE_SW_SEQNO, &entry->queue->rt2x00dev->flags))
return;
/*
* Hardware should insert sequence counter.
* FIXME: We insert a software sequence counter first for
* hardware that doesn't support hardware sequence counting.
* The hardware is not able to insert a sequence number. Assign a
* software generated one here.
*
* This is wrong because beacons are not getting sequence
* numbers assigned properly.
@ -245,7 +249,6 @@ static void rt2x00queue_create_tx_descriptor_seq(struct queue_entry *entry,
spin_unlock_irqrestore(&intf->seqlock, irqflags);
__set_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags);
}
static void rt2x00queue_create_tx_descriptor_plcp(struct queue_entry *entry,