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Re: SIOCIFADDR: Device not configured
- From: sebastien Couret <sebastien dot couret at elios-informatique dot fr>
- To: <ecos-discuss at sources dot redhat dot com>
- Date: Thu, 5 Feb 2004 11:04:57 +0100
- Subject: Re: [ECOS] SIOCIFADDR: Device not configured
- Organization: Elios Informatique
- Reply-to: sebastien dot couret at elios-informatique dot fr
It's a good new that ethernet works well with redboot.
Anyway, it's not functionning all the same while the application is running.
(For example Redboot use a light implementation of TCP/IP and doesn't
Have u checked that the MAC adress specified with fconfig is used correctly
in the packets sended by Redboot ? (use a sniffer like ethereal for example
To my point a view (but i may be wrong) U got a problem in the ethernet
driver or in the way of MAC adress is stored.(often in the flash)
There is an ioctl call used by TCP/IP stack to obtain MAC adress : it's
SIOCGIFHWADDR. I think this call is not handled correctly by the ethernet
driver which return -1 (displayed as a ff:ff:ff:ff:ff:ff adress)
Here 's a little function that makes this sort of call :
int GetMAC(const char* interface,unsigned char value[ETHER_ADDR_LEN])
int test_sock=0; // Socket PF_INET/SOCK_DGRAM
unsigned char i=0;
struct ifreq ifr;
unsigned char display;
test_sock = socket( PF_INET, SOCK_DGRAM, 0 );
if( test_sock == -1 )
diag_printf("Cannot obtain socket");
memset( &ifr, 0, sizeof( struct ifreq ) );
if( ioctl( test_sock, SIOCGIFHWADDR, &ifr ) == -1 )
diag_printf("Cannot obtain MAC adress :%s",strerror(errno));
Hope this helps.
On Thursday 05 February 2004 01:46, you wrote:
> Hello sebastien Couret
> Thank you for your answer .
> When only redboot running,The eth0 works well.It can
> ping the host and use tftp to download file for host.I think,
> if redboot can works, eth0 drivers and hal did not
> have any problems.After plusing FreeBSD stack, eth0 ping_test can
> works! But, the fact is not like this.
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