Re: Sending sk_buffs without being tied to a struct sock

Re: Sending sk_buffs without being tied to a struct sock

[Joshua Stewart]

At this point, if I call skb->dst->output() what should skb->data point
to? A properly crafted IP packet?  Checksummed and all?  I shouldn't
need any layer 2 info in my skb at all to use this solution, should I?

Thanks for the help.  I think this will do the trick.

J

On Sun, 2003-01-12 at 12:28, Patrick McHardy wrote:
> Joshua Stewart wrote:
> 
> >
> >I'm trying to take "hand-built" sk_buffs with little more than some data
> >and a dev member and push them to the NIC for transmission.  I would
> >like to simply give them to dev_queue_xmit.  Does anybody know what
> >state I should have them in before handing them to dev_queue_xmit? 
> >Should skb->data point to the start of a MAC header or an IP header?
> >
> >Also, given an IP address in skb->nh.iph->daddr, what's the easiest way
> >to get the appropriate MAC address?
> >
> use ip_route_output_key() and then skb->dst->output(), that way it will work on all media
> and you don't have to care about l2 resolving at all.
> 
> 
> Patrick
> 
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