[sr-dev] git:andrei/raw_sock: core: basic raw socket support functions

[Klaus Darilion]

Am 08.06.2010 09:09, schrieb Andrei Pelinescu-Onciul:
> On Jun 08, 2010 at 08:43, Klaus Darilion<klaus.mailinglists at pernau.at>  wrote:
>> Lovely.
>>
>> Do you plan to export this functionality to the script? e.g. if
>> force_send_socket() does not find the forced UDP socket, it uses a
>> raw socket?
>
> Not exactly, I plan to use it as a replacement for udp sockets (higher
> performance on send on linux) and in the future for handling icmp.
> The force_send_socket() stuff it's a good idea.

I just read about raw sockets (http://sock-raw.org/papers/sock_raw) and 
when sending on raw_sockets, there wont be any fragmentation. So that 
would need to be implemented in sr as well.

Is the performance gain really worth the effort? I wonder why 
constructing of IP/UDP headers in sr is faster than having it done in 
the kernel.

another interesting point is if the raw socket receives the packet 
before or after iptables filtering.

regards
klaus

>
> Andrei
>
>>
>> Am 08.06.2010 00:24, schrieb Andrei Pelinescu-Onciul:
>>> Module: sip-router
>>> Branch: andrei/raw_sock
>>> Commit: 2f0276f711ba7aad9ffa1de0445f75df015abbad
>>> URL:    http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=2f0276f711ba7aad9ffa1de0445f75df015abbad
>>>
>>> Author: Andrei Pelinescu-Onciul<andrei at iptel.org>
>>> Committer: Andrei Pelinescu-Onciul<andrei at iptel.org>
>>> Date:   Tue Jun  8 00:21:08 2010 +0200
>>>
>>> core: basic raw socket support functions
>>>
>>> Basic support for raw sockets. Functions for creating, sending and
>>>   receiving udp packets over raw sockets.
>>> Initial version supports only linux.
>>>
>>> ---
>>>
>>>   raw_sock.c |  452 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>>   raw_sock.h |   52 +++++++
>>>   2 files changed, 504 insertions(+), 0 deletions(-)
>>>
>>> Diff:   http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commitdiff;h=2f0276f711ba7aad9ffa1de0445f75df015abbad
>>>
>>> _______________________________________________
>>> sr-dev mailing list
>>> sr-dev at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev