On Fri, Feb 22, 2013 at 3:47 PM, Rami Rosen [off-list ref] wrote:

Hi, Adel,

You should use
ip_route_output_flow().
For this you should construct a
 flowi4 instance.
ip_route_output_flow() is exported via EXPORT_SYMBOL_GPL.

See for example how this is done in udp_sendmsg().

Good luck!

Rami Rosen
http://ramirose.wix.com/ramirosen

On Fri, Feb 22, 2013 at 2:36 PM, Adel Qodmani [off-list ref] wrote:

quoted

Hey,

My question is quite simple, I have an sk_buff that I want to transmit,

the

quoted

sk_buff is an ICMP message and so far, I've built the headers and set up
everything.

The problem is, when I want to do such a thing, I typically use a

function

quoted

called:
dev_queue_xmit which takes the skb and transmits the packet using the
net_device specified in the skb; but time time I can't set the

net_device, I

quoted

need the packet to go through the routing code and get it sent normally;

so

quoted

what function can I use to that?

Some notes:
*The kernel I am working on is 3.2.0-37
*I am working using Modules, so symbols that are not exported are
unreachable for me
*I set the IP header using htons, so my header data is already in network
byte-order.

Regards,
Adel

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Hi Rami,

Using ip_route_output_flow() or using udp_sendmsg() would require not only
constructing a flowi4 but also a sock; I am intentionally trying to avoid
building a sock at the time being.
Is there a way I can deliver my sk_buff to the routing code so that it'd
set the net_device in there or at least tell me which interface to use and
then I'd set it up myself?

Thankful,
Adel
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