* [ECOS] assign IP address to a specifig mac
@ 2005-08-01 21:05 mkhoyila
2005-08-01 21:58 ` Gary Thomas
2005-08-02 7:27 ` Sébastien Couret
0 siblings, 2 replies; 4+ messages in thread
From: mkhoyila @ 2005-08-01 21:05 UTC (permalink / raw)
To: ecos-discuss
can someone guide me on how to assign an IP address to a mac address from
eCos ethernet driver? If so, is there a sample code I can look at. thanks.
Michael
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [ECOS] assign IP address to a specifig mac
2005-08-01 21:05 [ECOS] assign IP address to a specifig mac mkhoyila
@ 2005-08-01 21:58 ` Gary Thomas
[not found] ` <21913.63.87.1.243.1122939985.squirrel@webmail.uci.edu>
2005-08-02 7:27 ` Sébastien Couret
1 sibling, 1 reply; 4+ messages in thread
From: Gary Thomas @ 2005-08-01 21:58 UTC (permalink / raw)
To: mkhoyila; +Cc: eCos Discussion
On Mon, 2005-08-01 at 14:07 -0700, mkhoyila@uci.edu wrote:
> can someone guide me on how to assign an IP address to a mac address from
> eCos ethernet driver? If so, is there a sample code I can look at. thanks.
It's unclear exactly what you mean here.
* Are you looking for a way to force the IP that a particular
interface uses (within an eCos application)?
This is done using the CDL, selecting a fixed IP instead
of using DHCP or BOOTP.
* Perhaps you want for force the association between some external
device's address (ESA) and a particular IP address.
This is normally discovered via ARP (Address Resolution Protocol).
It is possible to push such a relationship directly into the
stack, but it's messy and I'm not sure why you would ever want
to do so.
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [ECOS] assign IP address to a specifig mac
[not found] ` <21913.63.87.1.243.1122939985.squirrel@webmail.uci.edu>
@ 2005-08-02 0:28 ` Gary Thomas
0 siblings, 0 replies; 4+ messages in thread
From: Gary Thomas @ 2005-08-02 0:28 UTC (permalink / raw)
To: mkhoyila; +Cc: eCos Discussion
Please copy your replies to the eCos mailing list. Private support
is only available with a support contract.
On Mon, 2005-08-01 at 16:46 -0700, mkhoyila@uci.edu wrote:
> Sorry I did not provide enough info.
>
> 1) I have a DSL modem and I want to use eCos as embededed RTOS.
>
> 2) I have written an Ethernet drive for it under eCos and now I want to
> assign a static IP to it (eth0 and eth1). I am using third party boot
> loader to load eCos. I can see it is loading eCos and runs my "hello
> world" applicaiton.
>
> [cyg_net_init] Init: loopattach(0x00000000)
> [cyg_net_init] Init: ifinit(0x00000000)
> [cyg_net_init] Init: domaininit(0x00000000)
> [cyg_net_init] Init: cyg_net_add_domain(0x8004d638)
> New domain internet at 0x00000000
> [cyg_net_init] Init: cyg_net_add_domain(0x8004d0e0)
> New domain route at 0x00000000
> [cyg_net_init] Init: cyg_route_init(0x00000000)
> [cyg_net_init] Done
>
> 3) once I can send and receie packets, I am going to do some benchmarks to
> test the eCos performace.
>
> Right now I need to assign an IP address to my eth0 so I can at least ping
> it and later create a bridge between two to send and receive packets.
> Thanks.
Why can't you use DHCP to get the IP address?
If you must use a fixed IP, then try settings like these:
cdl_component CYGPKG_NET_DHCP {
user_value 0
};
cdl_component CYGHWR_NET_DRIVER_ETH0_MANUAL {
user_value 0
};
cdl_component CYGHWR_NET_DRIVER_ETH0_BOOTP {
user_value 0
};
cdl_component CYGHWR_NET_DRIVER_ETH0_ADDRS {
user_value 1
};
cdl_option CYGHWR_NET_DRIVER_ETH0_ADDRS_IP {
user_value 192.168.1.169
};
cdl_option CYGHWR_NET_DRIVER_ETH0_ADDRS_NETMASK {
user_value 255.255.255.0
};
cdl_option CYGHWR_NET_DRIVER_ETH0_ADDRS_BROADCAST {
user_value 192.168.1.255
};
cdl_option CYGHWR_NET_DRIVER_ETH0_ADDRS_SERVER {
user_value 192.168.1.101
};
>
> > On Mon, 2005-08-01 at 14:07 -0700, mkhoyila@uci.edu wrote:
> >> can someone guide me on how to assign an IP address to a mac address
> >> from
> >> eCos ethernet driver? If so, is there a sample code I can look at.
> >> thanks.
> >
> > It's unclear exactly what you mean here.
> >
> > * Are you looking for a way to force the IP that a particular
> > interface uses (within an eCos application)?
> >
> > This is done using the CDL, selecting a fixed IP instead
> > of using DHCP or BOOTP.
> >
> > * Perhaps you want for force the association between some external
> > device's address (ESA) and a particular IP address.
> >
> > This is normally discovered via ARP (Address Resolution Protocol).
> > It is possible to push such a relationship directly into the
> > stack, but it's messy and I'm not sure why you would ever want
> > to do so.
> >
> > --
> > ------------------------------------------------------------
> > Gary Thomas | Consulting for the
> > MLB Associates | Embedded world
> > ------------------------------------------------------------
> >
>
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [ECOS] assign IP address to a specifig mac
2005-08-01 21:05 [ECOS] assign IP address to a specifig mac mkhoyila
2005-08-01 21:58 ` Gary Thomas
@ 2005-08-02 7:27 ` Sébastien Couret
1 sibling, 0 replies; 4+ messages in thread
From: Sébastien Couret @ 2005-08-02 7:27 UTC (permalink / raw)
To: mkhoyila; +Cc: ecos-discuss
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Hi,
May be it's not solving your issue but I can propose you a sample code that can change the MAC address annd IPv4 address for a specific network interface . This code is working well with the FreeBSP TCP/IP stack ported on eCOS and with ethernet devices/drivers that accept changing their MAC adress trough iotcl calls.
The code was originaly written in french, I have translate it quickly without compiling so please forgive my mistakes if any.
You could use the API like this :
char mac[ETHER_ADDR_LEN]={0xDE,0xAD,0x00,0xBE,0xEF,0x00};
IP_SetMAC("eth0",mac); // Will set MAC adress of eth0 interface to DE:AD:00:BE:EF:00
IP_SetIP("eth0","192.168.0.1"); // Will set the IPv4 adress of eth0 interface to 192.168.0.1
-----------------------------------------------------
Here comes the code :
Note: My own defines :
#define MACSTRING 18
char* ether_print(const u_char cp[ETHER_ADDR_LEN], char *etheraddr,const unsigned int len)
{
snprintf(etheraddr,len,"%02x:%02x:%02x:%02x:%02x:%02x",cp[0],cp[1],cp[2],cp[3],cp[4],cp[5]);
return(etheraddr);
}
int IP_SetMAC(const char* interface,unsigned char mac[ETHER_ADDR_LEN])
{
int test_sock=0; // Socket PF_INET/SOCK_DGRAM
unsigned char i=0;
struct ifreq ifr;
unsigned char display[MACSTRING];
test_sock = socket( PF_INET, SOCK_DGRAM, 0 );
if( test_sock == -1 )
{
diag_printf("Cannot obtain socket");
return (-1);
}
memset(&ifr,0,sizeof( struct ifreq ) );
strncpy(ifr.ifr_name,interface,IFNAMSIZ);
for (i=0;i<ETHER_ADDR_LEN;i++)
ifr.ifr_hwaddr.sa_data[i]=mac[i];
ether_print(mac,display,MACSTRING);
if( ioctl( test_sock, SIOCSIFHWADDR, &ifr ) == -1 )
{
diag_printf("Cannot set MAC adress for '%s' to '%s' because '%s'",interface,display,strerror(errno));
close(test_sock);
return (-1);
}
else diag_printf("MAC Adress for '%s' set to %s'",interface,display);
close(test_sock);
return(0);
}
int IP_SetIP(const char* interface,const char * adresse)
{
int test_sock=0;
struct sockaddr_in* addr=NULL;
struct ifreq ifr;
test_sock = socket( PF_INET, SOCK_DGRAM, 0 );
if( test_sock == -1 )
{
fprintf(stderr,"Cannot obtain socket");
return (-1);
}
memset(&ifr,0,sizeof( struct ifreq ) );
strncpy(ifr.ifr_name,interface,IFNAMSIZ);
if( ioctl( test_sock, SIOCGIFADDR, &ifr ) == -1 )
{
diag_printf("Cannot obtain IP address of '%s' because '%s'",interface,strerror(errno));
}
else
{
if( ioctl( test_sock, SIOCDIFADDR, &ifr ) != 0 )
{
diag_printf("Cannot suppress old IP for '%s' because '%s'",interface,strerror(errno));
}
}
memset( &ifr, 0, sizeof( struct ifreq ) );
addr= (struct sockaddr_in *)&(ifr.ifr_addr);
memset(addr, 0, sizeof( struct sockaddr_in) );
addr->sin_len=sizeof(struct sockaddr_in);
addr->sin_family=AF_INET;
addr->sin_addr.s_addr=inet_addr(adresse);
strncpy(ifr.ifr_name,interface,IFNAMSIZ);
if( ioctl( test_sock, SIOCSIFADDR, &ifr ) != 0 )
{
diag_printf("Cannot set IP address of '%s' to '%s' because '%s'",interface,adresse,strerror(errno));
close(test_sock);
return (-1);
}
else diag_printf("IP address for '%s' set '%s' ",interface,inet_ntoa(addr->sin_addr));
close(test_sock);
return(0);
}
Note : I have used the following headers files , they are not all necessary as my original file was doing more work like changing routes and ARP entries.Anyway, I hope this helps.
#include <cyg/kernel/kapi.h>
#include <pkgconf/system.h>
#include <network.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#ifdef CYGPKG_NET_FREEBSD_SYSCTL
#include <sys/sysctl.h>
#endif
#include <sys/param.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
#include <net/ethernet.h>
#include <netinet/if_ether.h>
#include <netinet/in.h>
On Mon, 1 Aug 2005 14:07:51 -0700 (PDT)
mkhoyila@uci.edu wrote:
> can someone guide me on how to assign an IP address to a mac address from
> eCos ethernet driver? If so, is there a sample code I can look at. thanks.
>
> Michael
>
>
> --
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
>
>
--
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2005-08-01 21:05 [ECOS] assign IP address to a specifig mac mkhoyila
2005-08-01 21:58 ` Gary Thomas
[not found] ` <21913.63.87.1.243.1122939985.squirrel@webmail.uci.edu>
2005-08-02 0:28 ` Gary Thomas
2005-08-02 7:27 ` Sébastien Couret
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