linux-next/include/linux/virtio_rng.h

#ifndef _LINUX_VIRTIO_RNG_H
#define _LINUX_VIRTIO_RNG_H
/* This header is BSD licensed so anyone can use the definitions to implement
 * compatible drivers/servers. */
#include <linux/virtio_config.h>

/* The ID for virtio_rng */
#define VIRTIO_ID_RNG	4

#endif /* _LINUX_VIRTIO_RNG_H */
virtio: An entropy device, as suggested by hpa. Note that by itself, having a "hardware" random generator does very little: you should probably run "rngd" in your guest to feed this into the kernel entropy pool. Included: virtio_rng: dont use vmalloced addresses for virtio If virtio_rng is build as a module, random_data is an address in vmalloc space. As virtio expects guest real addresses, this can cause any kind of funny behaviour, so lets allocate random_data dynamically with kmalloc. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2008-05-31 04:09:44 +08:00			`#ifndef _LINUX_VIRTIO_RNG_H`
			`#define _LINUX_VIRTIO_RNG_H`
virtio: clarify that ABI is usable by any implementations We want others to implement and use virtio, so it makes sense to BSD license the non-__KERNEL__ parts of the headers to make this crystal clear. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Mark McLoughlin <markmc@redhat.com> Acked-by: Ryan Harper <ryanh@us.ibm.com> Acked-by: Eric Van Hensbergen <ericvh@gmail.com> Acked-by: Anthony Liguori <aliguori@us.ibm.com> 2008-07-26 01:06:03 +08:00			`/* This header is BSD licensed so anyone can use the definitions to implement`
			`* compatible drivers/servers. */`
virtio: An entropy device, as suggested by hpa. Note that by itself, having a "hardware" random generator does very little: you should probably run "rngd" in your guest to feed this into the kernel entropy pool. Included: virtio_rng: dont use vmalloced addresses for virtio If virtio_rng is build as a module, random_data is an address in vmalloc space. As virtio expects guest real addresses, this can cause any kind of funny behaviour, so lets allocate random_data dynamically with kmalloc. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 2008-05-31 04:09:44 +08:00			`#include <linux/virtio_config.h>`

			`/* The ID for virtio_rng */`
			`#define VIRTIO_ID_RNG 4`

			`#endif /* _LINUX_VIRTIO_RNG_H */`