search for: tungetvnetbe

...on little-endian kernels" + default n + ---help--- + This option allows TUN/TAP and MACVTAP device drivers in a + little-endian kernel to parse vnet headers that come from a + big-endian legacy virtio device. + + Userspace programs can control the feature using the TUNSETVNETBE + and TUNGETVNETBE ioctls. + + Unless you have a little-endian system hosting a big-endian virtual + machine with a legacy virtio NIC, you should say N. + config VETH tristate "Virtual ethernet pair device" ---help--- diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 0327d9d..dc0a47c...

...> +#endif /* CONFIG_TUN_VNET_BE */ > + > /* > * provide compatibility with generic tun/tap interface > */ > @@ -1097,6 +1149,12 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd, > q->flags &= ~MACVTAP_VNET_LE; > return 0; > > + case TUNGETVNETBE: > + return macvtap_get_vnet_be(q, sp); > + > + case TUNSETVNETBE: > + return macvtap_set_vnet_be(q, sp); > + > case TUNSETOFFLOAD: > /* let the user check for future flags */ > if (arg & ~(TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6 | > diff --git a/drivers/net/tu...

...> +#endif /* CONFIG_TUN_VNET_BE */ > + > /* > * provide compatibility with generic tun/tap interface > */ > @@ -1097,6 +1149,12 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd, > q->flags &= ~MACVTAP_VNET_LE; > return 0; > > + case TUNGETVNETBE: > + return macvtap_get_vnet_be(q, sp); > + > + case TUNSETVNETBE: > + return macvtap_set_vnet_be(q, sp); > + > case TUNSETOFFLOAD: > /* let the user check for future flags */ > if (arg & ~(TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6 | > diff --git a/drivers/net/tu...

...eue *q, int __user *argp) +{ + return -EINVAL; +} +#endif /* CONFIG_TUN_VNET_BE */ + /* * provide compatibility with generic tun/tap interface */ @@ -1097,6 +1149,12 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd, q->flags &= ~MACVTAP_VNET_LE; return 0; + case TUNGETVNETBE: + return macvtap_get_vnet_be(q, sp); + + case TUNSETVNETBE: + return macvtap_set_vnet_be(q, sp); + case TUNSETOFFLOAD: /* let the user check for future flags */ if (arg & ~(TUN_F_CSUM | TUN_F_TSO4 | TUN_F_TSO6 | diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 053f9b6..4e1248...

...t; + > > /* > > * provide compatibility with generic tun/tap interface > > */ > > @@ -1097,6 +1149,12 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd, > > q->flags &= ~MACVTAP_VNET_LE; > > return 0; > > > > + case TUNGETVNETBE: > > + return macvtap_get_vnet_be(q, sp); > > + > > + case TUNSETVNETBE: > > + return macvtap_set_vnet_be(q, sp); > > + > > case TUNSETOFFLOAD: > > /* let the user check for future flags */ > > if (arg & ~(TUN_F_CSUM | TUN_F_TSO4 | TUN_F...

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. 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

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