Tag Archives: driver

Reset NICs by unloading / loading network drivers

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This script is specially useful when you clone VMs, but can be used in any other kind of situation where you have problems with network cards, say, duplicated cards for X reason.

Try to run this script I wrote:

if [ $UID -ne 0 ] 
then
	echo "Sorry, you have to run this script as root"
else
	cat /etc/udev/rules.d/70-persistent-net.rules | grep PCI | cut -d' ' -f5 | cut -b 2-6 | uniq > /tmp/drivers
	for driver in $(cat /tmp/drivers); do
		rm -rf /etc/udev/rules.d/70-persistent-net.rules && echo "Removing 70-persistent-net.rules"
		rmmod $driver && echo "Removing $driver"
		modprobe $driver && echo "Loading $driver"
	done
	echo "Done."
	rm -rf /tmp/drivers
fi

Tested under Debian and Fedora, but should work fine on other distributions.

The code is also on my github

¿Problemas al compilar driver fglrx 10.9? Solución aquí.

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Los desarrolladores del kernel han solucionado una vulnerabilidad crítica y una librería que utilizaba fglrx ha sido eliminada.

El error puede ser algo así:

/usr/src/kernel-modules/fglrx /
make: Entering directory `/usr/src/packages/BUILD/kernel-2.6.35.50.3desktop'
  LD      /usr/src/kernel-modules/fglrx/built-in.o
  CC [M]  /usr/src/kernel-modules/fglrx/firegl_public.o
/usr/src/kernel-modules/fglrx/firegl_public.c: In function ‘KCL_GetInitKerPte’:
/usr/src/kernel-modules/fglrx/firegl_public.c:2378:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c:2379:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c:2380:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c: In function ‘KCL_GetPageTableByVirtAddr’:
/usr/src/kernel-modules/fglrx/firegl_public.c:2425:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c:2428:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c:2429:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c: In function ‘KCL_TestAndClearPageDirtyFlag’:
/usr/src/kernel-modules/fglrx/firegl_public.c:2598:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c: In function ‘KCL_GetDmaPhysAddr’:
/usr/src/kernel-modules/fglrx/firegl_public.c:2636:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c:2637:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c:2638:5: warning: return makes integer from pointer without a cast
/usr/src/kernel-modules/fglrx/firegl_public.c:2640:5: warning: return makes integer from pointer without a cast
  CC [M]  /usr/src/kernel-modules/fglrx/kcl_acpi.o
  CC [M]  /usr/src/kernel-modules/fglrx/kcl_agp.o
  CC [M]  /usr/src/kernel-modules/fglrx/kcl_debug.o
  CC [M]  /usr/src/kernel-modules/fglrx/kcl_ioctl.o
/usr/src/kernel-modules/fglrx/kcl_ioctl.c: In function ‘KCL_IOCTL_AllocUserSpace32’:
/usr/src/kernel-modules/fglrx/kcl_ioctl.c:196:5: error: implicit declaration of function ‘compat_alloc_user_space’
/usr/src/kernel-modules/fglrx/kcl_ioctl.c:196:5: warning: return makes pointer from integer without a cast
make[1]: *** [/usr/src/kernel-modules/fglrx/kcl_ioctl.o] Error 1
make: *** [_module_/usr/src/kernel-modules/fglrx] Error 2
make: Leaving directory `/usr/src/packages/BUILD/kernel-2.6.35.50.3desktop'

Y la salida del comando ‘glxinfo’, así:

root@normandy:~# glxinfo
name of display: :0.0
X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  136 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  15
  Current serial number in output stream:  15

Solucionar esto, a pesar de que quizás parezca lo contrario, es bastante sencillo:

Nos movemos a la siguiente carpeta:

Debian: cd /lib/modules/fglrx/build_mod

Otra posible localización: cd  /usr/src/kernel-modules/fglrx/

Ahora tenemos que editar el archivo kcl_ioctl.c

# gedit kcl_ioctl.c

Buscamos la línea 197, el fragmento debe ser algo así:

void* ATI_API_CALL KCL_IOCTL_AllocUserSpace32(long size)
{
    return compat_alloc_user_space(size);
}

#endif // __x86_64__

Pues lo cambiamos por lo siguiente:

void* ATI_API_CALL KCL_IOCTL_AllocUserSpace32(long size)
{
    return arch_compat_alloc_user_space(size);
}

#endif // __x86_64__

Guardamos el archivo, y ahora tenemos que compilarlo otra vez, para ello:

# cd ..
# ./make_install.sh

Y eso es todo, yo así conseguí arreglarlo.