From: Alan Ott Date: Wed, 3 Apr 2013 04:00:57 +0000 (+0000) Subject: mac802154: Increase tx_buffer_len X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e937f583ec3a40cccd480b40d8c6d54751781587;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git mac802154: Increase tx_buffer_len Increase the buffer length from 10 to 300 packets. Consider that traffic on mac802154 devices will often be 6LoWPAN, and a full-length (1280 octet) IPv6 packet will fragment into 15 6LoWPAN fragments (because the MTU of IEEE 802.15.4 is 127). A 300-packet queue is really 20 full-length IPv6 packets. With a queue length of 10, an entire IPv6 packet was unable to get queued at one time, causing fragments to be dropped, and making reassembly impossible. Signed-off-by: Alan Ott Signed-off-by: David S. Miller --- diff --git a/net/mac802154/wpan.c b/net/mac802154/wpan.c index 7d3f6594ed4..2ca2f4dceab 100644 --- a/net/mac802154/wpan.c +++ b/net/mac802154/wpan.c @@ -360,7 +360,7 @@ void mac802154_wpan_setup(struct net_device *dev) dev->header_ops = &mac802154_header_ops; dev->needed_tailroom = 2; /* FCS */ dev->mtu = IEEE802154_MTU; - dev->tx_queue_len = 10; + dev->tx_queue_len = 300; dev->type = ARPHRD_IEEE802154; dev->flags = IFF_NOARP | IFF_BROADCAST; dev->watchdog_timeo = 0;