Re: What is the best way for multiple net_devices
- Received message begins Here - > > On Wed, Jun 27, 2001 at 06:04:02PM -0400, Jeff Garzik wrote: > > andrew may wrote: > > > > > > Is there a standard way to make multiple copies of a network device? > > > > > > For things like the bonding/ipip/ip_gre and others they seem to expect > > > insmod -o copy1 module.o > > > insmod -o copy2 module.o > > > > The network driver should provide the capability to add new devices. > > I am planning to write or patch some drivers to do this as well as other > things. > > I would want to add things at run time after the module is alreaded loaded. > So options to the module won't work. > > I don't know how to use ifconfig to create a new device. Ifconfig doesn't create the new device, when the driver module is loaded it looks for all devices on the bus and creates the table with those entries. To locat them, an "ifconfig -a" will do > Any examples of drivers and apps that do this cleanly. The ones I have > seen are not. The only one I've seen are SCSI ( I believe it was done with "echo 1 >/proc/ ". If a new device is present (turned on) the new entry is appended. Another one (similar) is the parport. Loading parport_probe rescans, and defines the new devices. Another is a module version of IDE. unload/loading ide-probe rescans the IDE devices. These ARE clumsy because you have to unload them to do a rescan, also I think the tables are contained inside the probe module. I don't think you can unload the probe module if one of the devices is busy (though the SCSI version might be closer to what you want, it is also the most complex). - Jesse I Pollard, II Email: [EMAIL PROTECTED] Any opinions expressed are solely my own. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
- Received message begins Here - On Wed, Jun 27, 2001 at 06:04:02PM -0400, Jeff Garzik wrote: andrew may wrote: Is there a standard way to make multiple copies of a network device? For things like the bonding/ipip/ip_gre and others they seem to expect insmod -o copy1 module.o insmod -o copy2 module.o The network driver should provide the capability to add new devices. I am planning to write or patch some drivers to do this as well as other things. I would want to add things at run time after the module is alreaded loaded. So options to the module won't work. I don't know how to use ifconfig to create a new device. Ifconfig doesn't create the new device, when the driver module is loaded it looks for all devices on the bus and creates the table with those entries. To locat them, an ifconfig -a will do Any examples of drivers and apps that do this cleanly. The ones I have seen are not. The only one I've seen are SCSI ( I believe it was done with echo 1 /proc/ . If a new device is present (turned on) the new entry is appended. Another one (similar) is the parport. Loading parport_probe rescans, and defines the new devices. Another is a module version of IDE. unload/loading ide-probe rescans the IDE devices. These ARE clumsy because you have to unload them to do a rescan, also I think the tables are contained inside the probe module. I don't think you can unload the probe module if one of the devices is busy (though the SCSI version might be closer to what you want, it is also the most complex). - Jesse I Pollard, II Email: [EMAIL PROTECTED] Any opinions expressed are solely my own. - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
On Wed, Jun 27, 2001 at 03:36:37PM -0700, Maksim Krasnyanskiy wrote: > > >Any examples of drivers and apps that do this cleanly. The ones I have seen are not. > TUN/TAP driver and tuncfg utility > http://vtun.sf.net/tun OK, thanks that is nice, but I think adding support to get into the /dev namespace may be a little heavy for things like bonding or ipip. I did not see tuncfg. From what I could see there were 2 ways to create new devices. There was a script with mknod and then the ioctl(fd, TUNSETIFF, (void *) ). I could do a similar ioctl for a pure net device but I still need a dummy socket for creating/destroying devices. I am going for an embedded system so I want to keep things light. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
>Any examples of drivers and apps that do this cleanly. The ones I have seen are not. TUN/TAP driver and tuncfg utility http://vtun.sf.net/tun Max Maksim Krasnyanskiy Senior Kernel Engineer Qualcomm Incorporated [EMAIL PROTECTED] http://bluez.sf.net http://vtun.sf.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
In article <[EMAIL PROTECTED]>, Jeff Garzik <[EMAIL PROTECTED]> wrote: >andrew may wrote: >> >> Is there a standard way to make multiple copies of a network device? >> >> For things like the bonding/ipip/ip_gre and others they seem to expect >> insmod -o copy1 module.o >> insmod -o copy2 module.o > >The network driver should provide the capability to add new devices. > >Most drivers currently have the capability to do N devices, where N is >some constant set at compile time. Typically you use ifconfig, a >special-purpose userland program, or sometimes even sysctls to configure >additional net devices. Ioctls require modifications to other parts of the kernel and a supporting user land program. Passing the number to create via insmod seems to be a reasonable compromise. >It's certainly possible to modify the driver to create additional >network interfaces on the fly, but a lot of drivers are not coded to do >that at present. -- __O Lineo - For Embedded Linux Solutions _-\<,_ PGP Fingerprint: 28 E2 A0 15 99 62 9A 00 (_)/ (_) 88 EC A3 EE 2D 1C 15 68 Stuart Lynne <[EMAIL PROTECTED]> www.fireplug.net604-461-7532 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
On Wed, Jun 27, 2001 at 06:04:02PM -0400, Jeff Garzik wrote: > andrew may wrote: > > > > Is there a standard way to make multiple copies of a network device? > > > > For things like the bonding/ipip/ip_gre and others they seem to expect > > insmod -o copy1 module.o > > insmod -o copy2 module.o > > The network driver should provide the capability to add new devices. I am planning to write or patch some drivers to do this as well as other things. I would want to add things at run time after the module is alreaded loaded. So options to the module won't work. I don't know how to use ifconfig to create a new device. Any examples of drivers and apps that do this cleanly. The ones I have seen are not. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
andrew may wrote: > > Is there a standard way to make multiple copies of a network device? > > For things like the bonding/ipip/ip_gre and others they seem to expect > insmod -o copy1 module.o > insmod -o copy2 module.o The network driver should provide the capability to add new devices. Most drivers currently have the capability to do N devices, where N is some constant set at compile time. Typically you use ifconfig, a special-purpose userland program, or sometimes even sysctls to configure additional net devices. It's certainly possible to modify the driver to create additional network interfaces on the fly, but a lot of drivers are not coded to do that at present. -- Jeff Garzik | Andre the Giant has a posse. Building 1024| MandrakeSoft | - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
What is the best way for multiple net_devices
Is there a standard way to make multiple copies of a network device? For things like the bonding/ipip/ip_gre and others they seem to expect insmod -o copy1 module.o insmod -o copy2 module.o It seems to me that this will waste space creating copies of all the static data. Then there are things like ipsec that create a few static net_dev structures, but I have no idea how they deal with more entries. They probably don't. The PCI drivers seem to be pretty clean with init_one type functions. Is there anything similar for generic hardware-less network devices. I would hate to have write an ioctl to create a new device without loading a module twice. -- Andrew May [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
What is the best way for multiple net_devices
Is there a standard way to make multiple copies of a network device? For things like the bonding/ipip/ip_gre and others they seem to expect insmod -o copy1 module.o insmod -o copy2 module.o It seems to me that this will waste space creating copies of all the static data. Then there are things like ipsec that create a few static net_dev structures, but I have no idea how they deal with more entries. They probably don't. The PCI drivers seem to be pretty clean with init_one type functions. Is there anything similar for generic hardware-less network devices. I would hate to have write an ioctl to create a new device without loading a module twice. -- Andrew May [EMAIL PROTECTED] - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
andrew may wrote: Is there a standard way to make multiple copies of a network device? For things like the bonding/ipip/ip_gre and others they seem to expect insmod -o copy1 module.o insmod -o copy2 module.o The network driver should provide the capability to add new devices. Most drivers currently have the capability to do N devices, where N is some constant set at compile time. Typically you use ifconfig, a special-purpose userland program, or sometimes even sysctls to configure additional net devices. It's certainly possible to modify the driver to create additional network interfaces on the fly, but a lot of drivers are not coded to do that at present. -- Jeff Garzik | Andre the Giant has a posse. Building 1024| MandrakeSoft | - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
On Wed, Jun 27, 2001 at 06:04:02PM -0400, Jeff Garzik wrote: andrew may wrote: Is there a standard way to make multiple copies of a network device? For things like the bonding/ipip/ip_gre and others they seem to expect insmod -o copy1 module.o insmod -o copy2 module.o The network driver should provide the capability to add new devices. I am planning to write or patch some drivers to do this as well as other things. I would want to add things at run time after the module is alreaded loaded. So options to the module won't work. I don't know how to use ifconfig to create a new device. Any examples of drivers and apps that do this cleanly. The ones I have seen are not. - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
In article [EMAIL PROTECTED], Jeff Garzik [EMAIL PROTECTED] wrote: andrew may wrote: Is there a standard way to make multiple copies of a network device? For things like the bonding/ipip/ip_gre and others they seem to expect insmod -o copy1 module.o insmod -o copy2 module.o The network driver should provide the capability to add new devices. Most drivers currently have the capability to do N devices, where N is some constant set at compile time. Typically you use ifconfig, a special-purpose userland program, or sometimes even sysctls to configure additional net devices. Ioctls require modifications to other parts of the kernel and a supporting user land program. Passing the number to create via insmod seems to be a reasonable compromise. It's certainly possible to modify the driver to create additional network interfaces on the fly, but a lot of drivers are not coded to do that at present. -- __O Lineo - For Embedded Linux Solutions _-\,_ PGP Fingerprint: 28 E2 A0 15 99 62 9A 00 (_)/ (_) 88 EC A3 EE 2D 1C 15 68 Stuart Lynne [EMAIL PROTECTED] www.fireplug.net604-461-7532 - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
Any examples of drivers and apps that do this cleanly. The ones I have seen are not. TUN/TAP driver and tuncfg utility http://vtun.sf.net/tun Max Maksim Krasnyanskiy Senior Kernel Engineer Qualcomm Incorporated [EMAIL PROTECTED] http://bluez.sf.net http://vtun.sf.net - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: What is the best way for multiple net_devices
On Wed, Jun 27, 2001 at 03:36:37PM -0700, Maksim Krasnyanskiy wrote: Any examples of drivers and apps that do this cleanly. The ones I have seen are not. TUN/TAP driver and tuncfg utility http://vtun.sf.net/tun OK, thanks that is nice, but I think adding support to get into the /dev namespace may be a little heavy for things like bonding or ipip. I did not see tuncfg. From what I could see there were 2 ways to create new devices. There was a script with mknod and then the ioctl(fd, TUNSETIFF, (void *) ifr). I could do a similar ioctl for a pure net device but I still need a dummy socket for creating/destroying devices. I am going for an embedded system so I want to keep things light. - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
