Thank you all, I make some changes in my code, but its still not work. When my module is loading and loading I have a problems with connection with Internet- is it a matter of configuration? My changes: #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/netdevice.h> #include <linux/string.h> #define DEV_NAME "my_dev\n" struct net_device my_netdev; int init_mdev(struct net_device *dev); struct net_device_ops nops = { .ndo_init = init_mdev, /*.ndo_uninit = unin_mdev,*/ }; static int __init init_dev(void) { /*my_netdev.netdev_ops = &nops;*/ int result; if(!(netdev_boot_setup_check(&my_netdev))){ printk(KERN_ERR "NETDEV: setup error"); return 0; } strcpy(my_netdev.name, DEV_NAME); if((result = register_netdev(&my_netdev))) printk(KERN_ERR "NETDEV: Error registering device"); printk("NETDEV: Device registered successfully"); return 0; } static void __exit remove_dev(void) { unregister_netdev(&my_netdev); } int init_mdev(struct net_device *dev) { printk("INIT"); return 0; } module_init(init_dev); module_exit(remove_dev); W dniu 2017-06-20 18:00:02 użytkownik <kernelnewbies-request@kernelnewbies.org> napisał:

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Today's Topics:

1. My network device don't work (wiktoria.lewicka) 2. Re: My network device don't work (Stan Drozd) 3. Re: My network device don't work (Greg KH)

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Message: 1 Date: Tue, 20 Jun 2017 14:32:31 +0200 From: "wiktoria.lewicka" <wiktoria.lewicka@vp.pl> Subject: My network device don't work To: "kernelnewbies@kernelnewbies.org" <kernelnewbies@kernelnewbies.org> Message-ID: <186270325-26e3212af6540c227a34d3cd3b5e0c56@pmq3v.m5r2.onet> Content-Type: text/plain; charset="utf-8"

Hello. I write simple network device, but its don't work. Module is loading, loading, loading... Code:

#include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/netdevice.h> #include <linux/string.h> #define DEV_NAME "chwdp"

struct net_device my_netdev;

int init_my_net_dev(struct net_device *dev);

struct net_device_ops nops = { .ndo_init = init_my_net_dev, //.ndo_uninit = uninit_my_net_dev, };

static int __init init_dev(void) { //my_netdev.netdev_ops = &nops; int result; if((netdev_boot_setup_check(&my_netdev))){ printk(KERN_ERR "NETDEV: setup error"); return 0; } strncpy(my_netdev.name, DEV_NAME, 5); if((result = register_netdev(&my_netdev))) printk(KERN_ERR "NETDEV: Error registering device"); printk("NETDEV: Device registered successfully"); return 0; }

static void __exit remove_dev(void) { unregister_netdev(&my_netdev); } int init_my_net_dev(struct net_device *dev) { printk("INIT"); return 0; } module_init(init_dev); module_exit(remove_dev);

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Message: 2 Date: Tue, 20 Jun 2017 15:31:29 +0200 From: Stan Drozd <drozdziak1@gmail.com> Subject: Re: My network device don't work To: "wiktoria.lewicka" <wiktoria.lewicka@vp.pl> Cc: kernelnewbies@kernelnewbies.org Message-ID: <20170620133128.GB1233@gmail.com> Content-Type: text/plain; charset=us-ascii

On Tue, Jun 20, 2017 at 02:32:31PM +0200, wiktoria.lewicka wrote:

...

Hello. I write simple network device, but its don't work. Module is loading, loading, loading... Code: [...] Hello, "strncpy(my_netdev.name, DEV_NAME, 5)" only copies the 5 chars in "chwdp" without the null byte. You could bump it to 6 or maybe change 5 to IFNAMSIZ (the net_device.name's size) and then change the last byte to '\0' manually

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Message: 3 Date: Tue, 20 Jun 2017 22:12:34 +0800 From: Greg KH <greg@kroah.com> Subject: Re: My network device don't work To: "wiktoria.lewicka" <wiktoria.lewicka@vp.pl> Cc: "kernelnewbies@kernelnewbies.org" <kernelnewbies@kernelnewbies.org> Message-ID: <20170620141234.GA2599@kroah.com> Content-Type: text/plain; charset=us-ascii

On Tue, Jun 20, 2017 at 02:32:31PM +0200, wiktoria.lewicka wrote:

...

Hello. I write simple network device, but its don't work. Module is loading, loading, loading... Code:

#include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/netdevice.h> #include <linux/string.h> #define DEV_NAME "chwdp"

struct net_device my_netdev;

int init_my_net_dev(struct net_device *dev);

struct net_device_ops nops = { .ndo_init = init_my_net_dev, //.ndo_uninit = uninit_my_net_dev, };

static int __init init_dev(void) { //my_netdev.netdev_ops = &nops; int result; if((netdev_boot_setup_check(&my_netdev))){ printk(KERN_ERR "NETDEV: setup error"); return 0;

Why are you returning success if there was an error?

And always try to use proper kernel coding style when writing kernel code if you expect/want someone else to read it :)

thanks,

greg k-h

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