search for: cpu_to_tun16

Hi, This patches introduce virtio_net_hdr_{from,to}_skb functions for conversion of GSO information between skb and virtio_net_hdr. Mike Rapoport (6): virtio_net: add _UAPI prefix to virtio_net header guards virtio_net: introduce virtio_net_hdr_{from,to}_skb macvtap: use common code for virtio_net_hdr and skb GSO conversion tuntap: use common code for virtio_net_hdr and skb GSO

Hi, This patches introduce virtio_net_hdr_{from,to}_skb functions for conversion of GSO information between skb and virtio_net_hdr. Mike Rapoport (6): virtio_net: add _UAPI prefix to virtio_net header guards virtio_net: introduce virtio_net_hdr_{from,to}_skb macvtap: use common code for virtio_net_hdr and skb GSO conversion tuntap: use common code for virtio_net_hdr and skb GSO

...tun_struct *tun) +{ + return tun->flags & TUN_VNET_LE; +} + static inline u16 tun16_to_cpu(struct tun_struct *tun, __virtio16 val) { - return __virtio16_to_cpu(tun->flags & TUN_VNET_LE, val); + return __virtio16_to_cpu(tun_is_little_endian(tun), val); } static inline __virtio16 cpu_to_tun16(struct tun_struct *tun, u16 val) { - return __cpu_to_virtio16(tun->flags & TUN_VNET_LE, val); + return __cpu_to_virtio16(tun_is_little_endian(tun), val); } static inline u32 tun_hashfn(u32 rxhash)

...tun_struct *tun) +{ + return tun->flags & TUN_VNET_LE; +} + static inline u16 tun16_to_cpu(struct tun_struct *tun, __virtio16 val) { - return __virtio16_to_cpu(tun->flags & TUN_VNET_LE, val); + return __virtio16_to_cpu(tun_is_little_endian(tun), val); } static inline __virtio16 cpu_to_tun16(struct tun_struct *tun, u16 val) { - return __cpu_to_virtio16(tun->flags & TUN_VNET_LE, val); + return __cpu_to_virtio16(tun_is_little_endian(tun), val); } static inline u32 tun_hashfn(u32 rxhash)

...amp; TUN_VNET_LE; > +} > + > static inline u16 tun16_to_cpu(struct tun_struct *tun, __virtio16 val) > { > - return __virtio16_to_cpu(tun->flags & TUN_VNET_LE, val); > + return __virtio16_to_cpu(tun_is_little_endian(tun), val); > } > > static inline __virtio16 cpu_to_tun16(struct tun_struct *tun, u16 val) > { > - return __cpu_to_virtio16(tun->flags & TUN_VNET_LE, val); > + return __cpu_to_virtio16(tun_is_little_endian(tun), val); > } > > static inline u32 tun_hashfn(u32 rxhash) > > _______________________________________________ &...

...amp; TUN_VNET_LE; > +} > + > static inline u16 tun16_to_cpu(struct tun_struct *tun, __virtio16 val) > { > - return __virtio16_to_cpu(tun->flags & TUN_VNET_LE, val); > + return __virtio16_to_cpu(tun_is_little_endian(tun), val); > } > > static inline __virtio16 cpu_to_tun16(struct tun_struct *tun, u16 val) > { > - return __cpu_to_virtio16(tun->flags & TUN_VNET_LE, val); > + return __cpu_to_virtio16(tun_is_little_endian(tun), val); > } > > static inline u32 tun_hashfn(u32 rxhash) > > _______________________________________________ &...

...) instead of the hint > whether byteswap is needed or not (patch 1) > - rebased on top of the virtio-1 accessors (patch 2) > > Patch 3 is a separate fix: I think it is also valid for virtio-1. I don't think so. See e.g. this code in tun: gso.csum_offset = cpu_to_tun16(tun, skb->csum_offset); looks like it has the correct endian-ness for virtio-1. > Please comment. > > --- > > Greg Kurz (3): > vhost: add VHOST_VRING_F_LEGACY_BIG_ENDIAN flag > vhost: add support for legacy virtio > vhost_net: fix virtio_net header...

...) instead of the hint > whether byteswap is needed or not (patch 1) > - rebased on top of the virtio-1 accessors (patch 2) > > Patch 3 is a separate fix: I think it is also valid for virtio-1. I don't think so. See e.g. this code in tun: gso.csum_offset = cpu_to_tun16(tun, skb->csum_offset); looks like it has the correct endian-ness for virtio-1. > Please comment. > > --- > > Greg Kurz (3): > vhost: add VHOST_VRING_F_LEGACY_BIG_ENDIAN flag > vhost: add support for legacy virtio > vhost_net: fix virtio_net header...

Hi, This patchset allows vhost_net to be used with legacy virtio when guest and host have a different endianness. It is based on previous work by C?dric Le Goater: https://www.mail-archive.com/kvm-ppc at vger.kernel.org/msg09848.html As suggested by MST: - the API now asks for a specific format (big endian) instead of the hint whether byteswap is needed or not (patch 1) - rebased on top of

Hi, This patchset allows vhost_net to be used with legacy virtio when guest and host have a different endianness. It is based on previous work by C?dric Le Goater: https://www.mail-archive.com/kvm-ppc at vger.kernel.org/msg09848.html As suggested by MST: - the API now asks for a specific format (big endian) instead of the hint whether byteswap is needed or not (patch 1) - rebased on top of

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

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. It is a complete rework of my initial post. Patches 1 to 5 are preliminary work: we move the endianness check out of all memory accessors to separate functions. Patch 6 changes the semantics of the accessors so that they have explicit big endian support. Patch 7 brings the cross-endian

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. It is a complete rework of my initial post. Patches 1 to 5 are preliminary work: we move the endianness check out of all memory accessors to separate functions. Patch 6 changes the semantics of the accessors so that they have explicit big endian support. Patch 7 brings the cross-endian

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. Patches 1-6 remain the same as the previous post. Patch 7 was heavily changed according to MST's comments. --- Greg Kurz (7): virtio: introduce virtio_is_little_endian() helper tun: add tun_is_little_endian() helper macvtap: introduce macvtap_is_little_endian()

Hi, This patchset allows vhost to be used with legacy virtio when guest and host have a different endianness. Patches 1-6 remain the same as the previous post. Patch 7 was heavily changed according to MST's comments. --- Greg Kurz (7): virtio: introduce virtio_is_little_endian() helper tun: add tun_is_little_endian() helper macvtap: introduce macvtap_is_little_endian()

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