On Thu, 2012-09-20 at 16:22 +0300, Artem Bityutskiy wrote:
>
> OK, I've tried almost this (see below) and it solves my issue:
>
> diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
> index 965e6ec..7f079d0 100644
> --- a/net/mac80211/rx.c
> +++ b/net/mac80211/rx.c
> @@ -1798,9 +1798,13 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
>
> if (skb) {
> /* deliver to local stack */
> - skb->protocol = eth_type_trans(skb, dev);
> - memset(skb->cb, 0, sizeof(skb->cb));
> - netif_receive_skb(skb);
> + if (pskb_may_pull(skb, 40)) {
> + skb->protocol = eth_type_trans(skb, dev);
> + memset(skb->cb, 0, sizeof(skb->cb));
> + netif_receive_skb(skb);
> + } else {
> + kfree_skb(skb);
> + }
> }
> }
>
OK but you cant do that, or small frames will be dropped.
Anyway its a hack, we should find the buggy layer.
You could use dropwatch (drop_monitor) to check where frame is dropped.
modprobe drop_monitor
dropwatch -l kas
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