I am trying to send a Raw packet from my kernel module. I found what I
hoped was a good example, but it came with the warning that allocating
the 'struct sock' was the tricky part, which is where I am now. I want
to use sk_alloc, which is defined as:
struct sock *sk_alloc(struct net *net, int family, gfp_t priority,
struct proto *prot);
I have been looking for how to get to the Raw 'struct proto', but it is
buried in at least one list, maybe more, and I haven't been able to find
how to get to it directly. The only place I have seen it being accessed
is in af_inet.c, which steps thru the 'struct inet_protosw' queue,
checking the protocol field (Raw uses the int, IPPROTO_IP). But the
inet_protosw queue is not an Exported Symbol. Is there a way to get the
Raw 'struct proto', perhaps using the IPPROTO_IP int?
Also, are there any gotchas as far as the 'struct sock' after it has
been allocated?
Thanks.
Later . . . Jim
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