From: Amir Vadai <a...@vadai.me>
Date: Wed, 30 Nov 2016 11:09:27 +0200
> @@ -119,18 +119,45 @@ static bool offset_valid(struct sk_buff *skb, int
> offset)
> return true;
> }
>
> +static int pedit_skb_hdr_offset(struct sk_buff *skb,
> + enum pedit_header_type htype, int *hoffset)
> +{
> + int ret = -1;
> +
> + switch (htype) {
> + case PEDIT_HDR_TYPE_ETH:
> + if (skb_mac_header_was_set(skb)) {
> + *hoffset = skb_mac_offset(skb);
> + ret = 0;
> + }
> + break;
> + case PEDIT_HDR_TYPE_RAW:
> + case PEDIT_HDR_TYPE_IP4:
> + case PEDIT_HDR_TYPE_IP6:
> + *hoffset = skb_network_offset(skb);
> + ret = 0;
> + break;
> + case PEDIT_HDR_TYPE_TCP:
> + case PEDIT_HDR_TYPE_UDP:
> + if (skb_transport_header_was_set(skb)) {
> + *hoffset = skb_transport_offset(skb);
> + ret = 0;
> + }
> + break;
> + };
> +
> + return ret;
> +}
> +
The only distinction between the cases is "L2", "L3", and "L4".
Therefore I don't see any reason to break it down into IP4 vs. IP6 vs.
RAW, for example. They all map to the same thing.
So why not just have PEDIT_HDR_TYPE_L2, PEDIT_HDR_TYPE_L3, and
PEDIT_HDR_TYPE_L4? It definitely seems more straightforward
and cleaner that way.
Thanks.
