Re: Patch for Apani Nortel VPN Client to build against kernel 2.6.22 help/review

[Nick Bowler]

I haven't read too much into the patch, but some quick comments.  Most applies
throughout:

> +#if (LINUX_VERSION_CODE >= 0x020616)
KERNEL_VERSION(2,6,22) is much more readable than 0x020616.

> +  return (struct iphdr*) skb->network_header;
Should be return ip_hdr(skb);

> +    skb->network_header = skb->data;
Should be skb_reset_network_header(skb);

> +    iph = skb->network_header.iph;
Probably meant skb->nh.iph.

> +  if ( iph->protocol == 17 )            /* if UDP, */
(snip)
> +  if ( iph->protocol == 6 )             /* if TCP, */
Could use IPPROTO_UDP and IPPROTO_TCP instead of 17 and 6, respectively.

Instead of littering the code with #if blah #else blah, you could also simply
provide implementations for the 2.6.22 functions #if LINUX_VERSION_CODE <
KERNEL_VERSION(2,6,22).

-- 
Nick Bowler, Elliptic Semiconductor (http://www.ellipticsemi.com/)

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