search for: tunsetvnetl

...io 1.0, we can move setting this > feature bit out of the individual devices. > > Signed-off-by: Cornelia Huck <cornelia.huck at de.ibm.com> So to use this with e.g. tun, you need to make tun device LE. I posted a kernel patch 1418732988-3535-1-git-send-email-mst at redhat.com with TUNSETVNETLE/TUNGETVNETLE ioctls to support it. But you still need to call them in qemu, and disable virtio-1.0 if not there. > --- > hw/net/virtio-net.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c > index 7ee2bd6..b5dd356 100644...

...io 1.0, we can move setting this > feature bit out of the individual devices. > > Signed-off-by: Cornelia Huck <cornelia.huck at de.ibm.com> So to use this with e.g. tun, you need to make tun device LE. I posted a kernel patch 1418732988-3535-1-git-send-email-mst at redhat.com with TUNSETVNETLE/TUNGETVNETLE ioctls to support it. But you still need to call them in qemu, and disable virtio-1.0 if not there. > --- > hw/net/virtio-net.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c > index 7ee2bd6..b5dd356 100644...

Hi, This series allows QEMU to use vhost with legacy virtio devices when host and target don't have the same endianness. Only network devices are covered for the moment. I had already posted a series some monthes ago but it never got reviewed. Moreover, the underlying kernel support was entirely re-written and is still waiting to be applied by Michael. I hence post as RFC. The corresponding

Hi, This series allows QEMU to use vhost with legacy virtio devices when host and target don't have the same endianness. Only network devices are covered for the moment. I had already posted a series some monthes ago but it never got reviewed. Moreover, the underlying kernel support was entirely re-written and is still waiting to be applied by Michael. I hence post as RFC. The corresponding

...VAL; > diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h > index 50ae243..bcac4c0 100644 > --- a/include/uapi/linux/if_tun.h > +++ b/include/uapi/linux/if_tun.h > @@ -50,6 +50,8 @@ > #define TUNGETFILTER _IOR('T', 219, struct sock_fprog) > #define TUNSETVNETLE _IOW('T', 220, int) > #define TUNGETVNETLE _IOR('T', 221, int) > +#define TUNSETVNETBE _IOW('T', 222, int) > +#define TUNGETVNETBE _IOR('T', 223, int) > > /* TUNSETIFF ifr flags */ > #define IFF_TUN 0x0001

...VAL; > diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h > index 50ae243..bcac4c0 100644 > --- a/include/uapi/linux/if_tun.h > +++ b/include/uapi/linux/if_tun.h > @@ -50,6 +50,8 @@ > #define TUNGETFILTER _IOR('T', 219, struct sock_fprog) > #define TUNSETVNETLE _IOW('T', 220, int) > #define TUNGETVNETLE _IOR('T', 221, int) > +#define TUNSETVNETBE _IOW('T', 222, int) > +#define TUNGETVNETBE _IOR('T', 223, int) > > /* TUNSETIFF ifr flags */ > #define IFF_TUN 0x0001

...set only for TAPs */ ret = -EINVAL; diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h index 50ae243..bcac4c0 100644 --- a/include/uapi/linux/if_tun.h +++ b/include/uapi/linux/if_tun.h @@ -50,6 +50,8 @@ #define TUNGETFILTER _IOR('T', 219, struct sock_fprog) #define TUNSETVNETLE _IOW('T', 220, int) #define TUNGETVNETLE _IOR('T', 221, int) +#define TUNSETVNETBE _IOW('T', 222, int) +#define TUNGETVNETBE _IOR('T', 223, int) /* TUNSETIFF ifr flags */ #define IFF_TUN 0x0001

...set only for TAPs */ ret = -EINVAL; diff --git a/include/uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h index 50ae243..3cb5e1d 100644 --- a/include/uapi/linux/if_tun.h +++ b/include/uapi/linux/if_tun.h @@ -50,6 +50,12 @@ #define TUNGETFILTER _IOR('T', 219, struct sock_fprog) #define TUNSETVNETLE _IOW('T', 220, int) #define TUNGETVNETLE _IOR('T', 221, int) +/* The TUNSETVNETBE and TUNGETVNETBE ioctls are for cross-endian support on + * little-endian hosts. Not all kernel configurations support them, but all + * configurations that support SET also support GET. + */ +#defin...

.../uapi/linux/if_tun.h b/include/uapi/linux/if_tun.h > > index 50ae243..bcac4c0 100644 > > --- a/include/uapi/linux/if_tun.h > > +++ b/include/uapi/linux/if_tun.h > > @@ -50,6 +50,8 @@ > > #define TUNGETFILTER _IOR('T', 219, struct sock_fprog) > > #define TUNSETVNETLE _IOW('T', 220, int) > > #define TUNGETVNETLE _IOR('T', 221, int) > > +#define TUNSETVNETBE _IOW('T', 222, int) > > +#define TUNGETVNETBE _IOR('T', 223, int) > > > > /* TUNSETIFF ifr flags */ > > #define IFF_TUN 0x0001 >

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. Patch 7 got rewritten according to Cornelia's and Michael's comments. I have also introduced patch 8 that brings BE vnet headers support to tun/macvtap. This series is enough to have vhost_net working flawlessly. I could succesfully reboot guests from ppc64 to ppc64le and

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. Patch 7 got rewritten according to Cornelia's and Michael's comments. I have also introduced patch 8 that brings BE vnet headers support to tun/macvtap. This series is enough to have vhost_net working flawlessly. I could succesfully reboot guests from ppc64 to ppc64le and

Only cosmetic and documentation changes since v5. --- Greg Kurz (8): virtio: introduce virtio_is_little_endian() helper tun: add tun_is_little_endian() helper macvtap: introduce macvtap_is_little_endian() helper vringh: introduce vringh_is_little_endian() helper vhost: introduce vhost_is_little_endian() helper virtio: add explicit big-endian support to memory

Only cosmetic and documentation changes since v5. --- Greg Kurz (8): virtio: introduce virtio_is_little_endian() helper tun: add tun_is_little_endian() helper macvtap: introduce macvtap_is_little_endian() helper vringh: introduce vringh_is_little_endian() helper vhost: introduce vhost_is_little_endian() helper virtio: add explicit big-endian support to memory

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. It is compatible with modern virtio and can be fully compiled out through kernel config. FWIW, I could flawlessly kexec/reboot guests from ppc64 to ppc64le and back. I could also migrate from a ppc64 to a ppc64le host and back. No regressions on x86 as expected. My experimental QEMU tree

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. It is compatible with modern virtio and can be fully compiled out through kernel config. FWIW, I could flawlessly kexec/reboot guests from ppc64 to ppc64le and back. I could also migrate from a ppc64 to a ppc64le host and back. No regressions on x86 as expected. My experimental QEMU tree

And yet another iteration of virtio-1 support in qemu, tested with the latest virtio kernel patches. Find it at git://github.com/cohuck/qemu virtio-1 Changes from v5: - fixed stupid bug in "virtio: support more feature bits": we need to define a proper prop backend for 64 bit wide handling... - don't negotiate revision 1 unless VERSION_1 is offered - use 64 bit wide features

And yet another iteration of virtio-1 support in qemu, tested with the latest virtio kernel patches. Find it at git://github.com/cohuck/qemu virtio-1 Changes from v5: - fixed stupid bug in "virtio: support more feature bits": we need to define a proper prop backend for 64 bit wide handling... - don't negotiate revision 1 unless VERSION_1 is offered - use 64 bit wide features