Re: Accessing tcp socket information from within a module

Vishwas Raman
2003-10-04T23:08:39Z

David S. Miller wrote:
> On Fri, 03 Oct 2003 17:02:07 -0700
> Vishwas Raman <vishwas@eternal-systems.com> wrote:
>
>
>>Is there some way of accessing the information of all open tcp sockets
>>in the system, other than having to turn one of IPV6 or KHTTPD on?
>
>
> You don't even need to write your kernel module, there is already
> a special netlink socket provided to userspace exactly for this
> purpose, to get info on all TCP sockets efficiently.
>
> See net/ipv4/tcp_diag.c
>

But what if I am interested in doing the same in kernel space and not
user space? The module I am writing is going to sit between the tcp and
ip layers of the networking stack. And I need to get info on all TCP
sockets and create/modify certain data structures of my own in the
module based on that information.