| Message ID | 1354240544-22214-1-git-send-email-alan@signal11.us |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
On 11/29/2012 08:55 PM, Alan Ott wrote: > Change the threshold for framentation of a lowpan packet from > using the MTU size to now use the MTU size minus the checksum length, > which is added by the hardware. For IEEE 802.15.4, this effectively > changes it from 127 bytes to 125 bytes. > Sorry, this was put in the wrong thread. One day I'll get one of these first-try. :( -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
From: Alan Ott <alan@signal11.us> Date: Thu, 29 Nov 2012 20:55:44 -0500 > Change the threshold for framentation of a lowpan packet from > using the MTU size to now use the MTU size minus the checksum length, > which is added by the hardware. For IEEE 802.15.4, this effectively > changes it from 127 bytes to 125 bytes. > > Signed-off-by: Alan Ott <alan@signal11.us> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index 6d42c17..f651da6 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -1047,7 +1047,8 @@ static netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev) goto error; } - if (skb->len <= IEEE802154_MTU) { + /* Send directly if less than the MTU minus the 2 checksum bytes. */ + if (skb->len <= IEEE802154_MTU - IEEE802154_MFR_SIZE) { err = dev_queue_xmit(skb); goto out; }
Change the threshold for framentation of a lowpan packet from using the MTU size to now use the MTU size minus the checksum length, which is added by the hardware. For IEEE 802.15.4, this effectively changes it from 127 bytes to 125 bytes. Signed-off-by: Alan Ott <alan@signal11.us> --- net/ieee802154/6lowpan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)