Adding rule with "From" option doesn't work [PATCH]

[Romary Sonrier]

OK i found the bug, is is the patch !!

Can someone push it into the git tree ?
Regards,

Romary Sonrier

=========================
My analysis:

I guess that the pay load is *struct fib_rule_hdr*
struct fib_rule_hdr {
__u8 family;
__u8 dst_len;
__u8 src_len;
__u8 tos;

__u8 table;
__u8 res1; /* reserved */
__u8 res2; /* reserved */
__u8 action;

__u32 flags;
};


> [PAYLOAD] 12 octets
> 02 00 00 00 0a 00 00 01 00 00 00 00 ............ 
so  

family = 02 , fine

table = 10, fine
but
src_len =0 !!!! should be 32


Le 03/05/2011 10:55, Romary Sonrier a écrit :
> Thanks for the tips... here is the debug output :
>
> -- Debug: Sent Message:
> --------------------------   BEGIN NETLINK MESSAGE
> ---------------------------
>   [HEADER] 16 octets
>     .nlmsg_len = 44
>     .nlmsg_type = 32 <route/rule::new>
>     .nlmsg_flags = 1029 <REQUEST,ACK,ATOMIC>
>     .nlmsg_seq = 1304412847
>     .nlmsg_pid = 19007
>   [PAYLOAD] 12 octets
>     02 00 00 00 0a 00 00 01 00 00 00 00                   ............
>   [ATTR 02] 4 octets
>     7f 00 00 01                                           ....
>   [ATTR 06] 4 octets
>     64 00 00 00                                           d...
> ---------------------------  END NETLINK MESSAGE  
> ---------------------------
> -- Debug: Received Message:
> --------------------------   BEGIN NETLINK MESSAGE
> ---------------------------
>   [HEADER] 16 octets
>     .nlmsg_len = 36
>     .nlmsg_type = 2 <ERROR>
>     .nlmsg_flags = 0 <>
>     .nlmsg_seq = 1304412847
>     .nlmsg_pid = 19007
>   [ERRORMSG] 20 octets
>     .error = 0 "Success"
>   [ORIGINAL MESSAGE] 16 octets
>     .nlmsg_len = 16
>     .nlmsg_type = 32 <0x20>
>     .nlmsg_flags = 1029 <REQUEST,ACK,ATOMIC>
>     .nlmsg_seq = 1304412847
>     .nlmsg_pid = 19007
> ---------------------------  END NETLINK MESSAGE  
> ---------------------------
>
>
>
> Le 03/05/2011 10:34, Thomas Graf a écrit :
>> On Tue, May 03, 2011 at 10:03:38AM +0200, Romary Sonrier wrote:
>>> Hello guys,
>>>
>>> I am using libnl 3.0 from git (cc33b0940f8ca0a34c9fbc085963e7887adc4db7)
>>>
>>> I am trying to add rules to the kernel routing engine, using libnl.
>>> (kernel 2.6.35-28-generic x86_64 GNU/Linux / Ubuntu)
>>>
>>> What i'm trying to do would be , with iproute2 :*ip rule add from
>>> 127.0.0.1 table 10 prio 100*
>>>
>>> There is not any tool like  src/nl-rule-add.c yet, so i did my own , you
>>> can find it as attachement.
>>>
>>> It seems that the call :*rtnl_rule_set_src(rule, a)* doesn't have any
>>> effect.
>>>
>>> Do you have any idea?
>>>
>>> I tried to compare with iproute2 code source, but that's not that easy.
>>> They use a struct "struct rtmsg", that is not use in libnl.
>>>
>>> Any help would be welcome....
>> Can you run your program like this:
>>
>> 	NLCB=debug src/nl-rule-add
>>
>> and post the output? That allows veryfing the netlink message that is being
>> sent to the kernel.
>
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> libnl at lists.infradead.org
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