On Tue, 2014-03-04 at 20:01 +0800, Hayes Wang wrote:
> Support hw IPv6 checksum for TCP and UDP packets.
> +/*
> + * r8152_csum_workaround()
> + * The hw limites the value the transport offset. When the offset is out of the
> + * range, calculate the checksum by sw.
> + */
> +static void r8152_csum_workaround(struct r8152 *tp, struct sk_buff *skb,
> + struct sk_buff_head *list)
> +{
> + if (skb_shinfo(skb)->gso_size) {
> + netdev_features_t features = tp->netdev->features;
> + struct sk_buff *segs, *nskb;
> +
> + features &= ~(NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO);
> + segs = skb_gso_segment(skb, features);
> + if (IS_ERR(segs) || !segs)
> + goto drop;
> +
> + do {
> + nskb = segs;
> + segs = segs->next;
> + nskb->next = NULL;
> + __skb_queue_head(list, nskb);
This introduces TCP reordering.
You should use some kind of skb_queue_splice()
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