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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2005-10-28 15:14:52 -0700
committerJeff Garzik <jgarzik@pobox.com>2005-10-28 19:06:44 -0400
commit2c36ed22c6f64de94c6c3b7258dd7285bb093401 (patch)
treebf8ab970180df5abe28d0c75d993a86a063bd8d5 /drivers/net/wireless/orinoco.c
parent63f57fb69b017230c77c40f1713e40885ae6d159 (diff)
[PATCH] Better fixup for the orinoco driver
The latest kernel added a pretty ugly fix for the orinoco etherleak bug which contains bogus skb->len checks already done by the caller and causes copies of all odd sized frames (which are quite common) While the skb->len check should be ripped out the other fix is harder to do properly so I'm proposing for this the -mm tree only until next 2.6.x so that it gets tested. Instead of copying buffers around blindly this code implements a padding aware version of the hermes buffer writing function which does padding as the buffer is loaded and thus more cleanly and without bogus 1.5K copies. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net/wireless/orinoco.c')
-rw-r--r--drivers/net/wireless/orinoco.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c
index 70a3477a206..488ab06fb79 100644
--- a/drivers/net/wireless/orinoco.c
+++ b/drivers/net/wireless/orinoco.c
@@ -542,14 +542,21 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev)
stats->tx_errors++;
goto fail;
}
+ /* Actual xfer length - allow for padding */
+ len = ALIGN(data_len, 2);
+ if (len < ETH_ZLEN - ETH_HLEN)
+ len = ETH_ZLEN - ETH_HLEN;
} else { /* IEEE 802.3 frame */
data_len = len + ETH_HLEN;
data_off = HERMES_802_3_OFFSET;
p = skb->data;
+ /* Actual xfer length - round up for odd length packets */
+ len = ALIGN(data_len, 2);
+ if (len < ETH_ZLEN)
+ len = ETH_ZLEN;
}
- /* Round up for odd length packets */
- err = hermes_bap_pwrite(hw, USER_BAP, p, ALIGN(data_len, 2),
+ err = hermes_bap_pwrite_pad(hw, USER_BAP, p, data_len, len,
txfid, data_off);
if (err) {
printk(KERN_ERR "%s: Error %d writing packet to BAP\n",