From: Igor Russkikh <Igor.Russkikh@xxxxxxxxxxxx>
Date: Wed, 21 Nov 2018 10:13:39 +0000
> + desc_hdr = *(u64 *)skb_tail_pointer(skb);
> + le64_to_cpus(&desc_hdr);
This is:
desc_hdr = le64_to_cpup(skb_tail_pointer(skb));
> + /* Get the first RX packet descriptor */
> + pkt_desc = (u64 *)(skb->data + desc_offset);
> +
> + while (pkt_count--) {
> + u32 pkt_len = 0;
> + u32 pkt_len_with_padd = 0;
> +
> + le64_to_cpus(pkt_desc);
Probably better to load the translated value into a local variable
once:
u64 cpu_desc = le64_to_cpup(pkt_desc);
and then use 'cpu_desc' instead of dereferencing "*pkt_desc" over and
over again.
> + /* Clone SKB */
> + new_skb = skb_clone(skb, GFP_ATOMIC);
> +
> + if (!new_skb)
> + goto err;
> +
> + new_skb->len = pkt_len;
> + skb_pull(new_skb, AQ_RX_HW_PAD);
> + skb_set_tail_pointer(new_skb, new_skb->len);
> +
> + new_skb->truesize = new_skb->len + sizeof(struct sk_buff);
I see lots of USB drivers doing this, but it's not correct.
We have a SKB_TRUESIZE() macro, please use it.
