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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

...@@ int btrfs_free_extent(struct btrfs_trans_handle *trans, u64 root_objectid, u64 owner, u64 offset); int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); -int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache, - u64 num_bytes, int reserve, int sinfo); int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, struct btrfs_root *root); int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, @@ -2269,8 +2267,11 @@ void btrfs_put_block_group_cache(struct btrfs_fs_info *info); u64 btrfs_account_ro_block_groups_free_space(st...

...@@ int btrfs_free_extent(struct btrfs_trans_handle *trans, u64 root_objectid, u64 owner, u64 offset); int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); -int btrfs_update_reserved_bytes(struct btrfs_block_group_cache *cache, - u64 num_bytes, int reserve, int sinfo); int btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, struct btrfs_root *root); int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, @@ -2269,8 +2267,11 @@ void btrfs_put_block_group_cache(struct btrfs_fs_info *info); u64 btrfs_account_ro_block_groups_free_space(st...

...tent-tree.c --- 8/fs/btrfs/extent-tree.c 2010-04-18 11:28:09.532699748 +0800 +++ 9/fs/btrfs/extent-tree.c 2010-04-18 10:30:30.926698723 +0800 @@ -2787,10 +2787,9 @@ int btrfs_check_data_free_space(struct i again: /* make sure we have enough space to handle the data first */ spin_lock(&data_sinfo->lock); - used = data_sinfo->bytes_used + data_sinfo->bytes_delalloc + - data_sinfo->bytes_reserved + data_sinfo->bytes_pinned + - data_sinfo->bytes_readonly + data_sinfo->bytes_may_use + - data_sinfo->bytes_super; + used = data_sinfo->bytes_used + data_sinfo->bytes...

Hi: Here are the patches I used for testing KVM with virtio-net using TSO. There are three patches for the tun device which are basically Rusty's patches with the mmap turned into copying (for correctness). Two patches are for the virtio-net frontend, one required to support receiving SG/TSO, and the other useful for testing SG per se. The other patch is to the KVM backend to make all this

Hi: Here are the patches I used for testing KVM with virtio-net using TSO. There are three patches for the tun device which are basically Rusty's patches with the mmap turned into copying (for correctness). Two patches are for the virtio-net frontend, one required to support receiving SG/TSO, and the other useful for testing SG per se. The other patch is to the KVM backend to make all this

1) Turn GSO on virtio net into an all-or-nothing (keep checksumming separate). Having multiple bits is a pain: if you can't support something you should handle it in software, which is still a performance win. 2) Make VIRTIO_NET_HDR_GSO_ECN a flag in the header, so it can apply to IPv6 or v4. 3) Rename VIRTIO_NET_F_NO_CSUM to VIRTIO_NET_F_CSUM (ie. means we do checksumming). 4)

1) Turn GSO on virtio net into an all-or-nothing (keep checksumming separate). Having multiple bits is a pain: if you can't support something you should handle it in software, which is still a performance win. 2) Make VIRTIO_NET_HDR_GSO_ECN a flag in the header, so it can apply to IPv6 or v4. 3) Rename VIRTIO_NET_F_NO_CSUM to VIRTIO_NET_F_CSUM (ie. means we do checksumming). 4)

...gt;>>>>>> @@ -112,8 +112,12 @@ static inline int > >>>>>>> virtio_net_hdr_from_skb(const struct sk_buff *skb, > >>>>>>> ????????????? hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; > >>>>>>> ????????? else if (sinfo->gso_type & SKB_GSO_TCPV6) > >>>>>>> ????????????? hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; > >>>>>>> -??????? else > >>>>>>> -??????????? return -EINVAL; > >>>>>>> +??????? else { > >&...

...gt;>>>>>> @@ -112,8 +112,12 @@ static inline int > >>>>>>> virtio_net_hdr_from_skb(const struct sk_buff *skb, > >>>>>>> ????????????? hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; > >>>>>>> ????????? else if (sinfo->gso_type & SKB_GSO_TCPV6) > >>>>>>> ????????????? hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; > >>>>>>> -??????? else > >>>>>>> -??????????? return -EINVAL; > >>>>>>> +??????? else { > >&...

On Tue, Nov 11, 2014 at 12:17:26PM +0000, Ben Hutchings wrote: > On Tue, 2014-11-11 at 10:58 +0000, Stefan Hajnoczi wrote: > > Commit 3d0ad09412ffe00c9afa201d01effdb6023d09b4 ("drivers/net: Disable > > UFO through virtio") breaks live migration of KVM guests from older to > > newer host kernels: > > > >

On Tue, Nov 11, 2014 at 12:17:26PM +0000, Ben Hutchings wrote: > On Tue, 2014-11-11 at 10:58 +0000, Stefan Hajnoczi wrote: > > Commit 3d0ad09412ffe00c9afa201d01effdb6023d09b4 ("drivers/net: Disable > > UFO through virtio") breaks live migration of KVM guests from older to > > newer host kernels: > > > >

...gso.gso_size; + skb_shinfo(skb)->gso_size = __virtio16_to_cpu(false, gso.gso_size); if (skb_shinfo(skb)->gso_size == 0) { tun->dev->stats.rx_frame_errors++; kfree_skb(skb); @@ -1245,8 +1245,8 @@ static ssize_t tun_put_user(struct tun_struct *tun, struct skb_shared_info *sinfo = skb_shinfo(skb); /* This is a hint as to how much should be linear. */ - gso.hdr_len = skb_headlen(skb); - gso.gso_size = sinfo->gso_size; + gso.hdr_len = __cpu_to_virtio16(false, skb_headlen(skb)); + gso.gso_size = __cpu_to_virtio16(false, sinfo->gso_size); if (sinfo->...

...gso.gso_size; + skb_shinfo(skb)->gso_size = __virtio16_to_cpu(false, gso.gso_size); if (skb_shinfo(skb)->gso_size == 0) { tun->dev->stats.rx_frame_errors++; kfree_skb(skb); @@ -1245,8 +1245,8 @@ static ssize_t tun_put_user(struct tun_struct *tun, struct skb_shared_info *sinfo = skb_shinfo(skb); /* This is a hint as to how much should be linear. */ - gso.hdr_len = skb_headlen(skb); - gso.gso_size = sinfo->gso_size; + gso.hdr_len = __cpu_to_virtio16(false, skb_headlen(skb)); + gso.gso_size = __cpu_to_virtio16(false, sinfo->gso_size); if (sinfo->...

...@cl.bb4.ne.jp> diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 8c26441..54ab490 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3241,6 +3241,8 @@ static int should_alloc_chunk(struct btrfs_root *root, struct btrfs_space_info *sinfo, u64 alloc_bytes) { u64 num_bytes = sinfo->total_bytes - sinfo->bytes_readonly; + u64 total_rw_bytes = root->fs_info->fs_devices->total_rw_bytes; + u64 max_chunk_size; u64 thresh; if (sinfo->bytes_used + sinfo->bytes_reserved + @@ -3251,8...

.../virtio_net.h b/include/linux/virtio_net.h index 0d1fe9297ac6..d90d5cff1b9a 100644 --- a/include/linux/virtio_net.h +++ b/include/linux/virtio_net.h @@ -112,8 +112,12 @@ static inline int virtio_net_hdr_from_skb(const struct sk_buff *skb, hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; else if (sinfo->gso_type & SKB_GSO_TCPV6) hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; - else - return -EINVAL; + else { + if (skb->data_len == 0) + hdr->gso_type = VIRTIO_NET_HDR_GSO_NONE; + else + return -EINVAL; + } if (sinfo->gso_type & SKB_GSO_TCP_ECN) hdr->gs...

...gt; > > > +++ b/include/linux/virtio_net.h > > > > @@ -112,8 +112,12 @@ static inline int > > > > virtio_net_hdr_from_skb(const struct sk_buff *skb, > > > > ????????????? hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; > > > > ????????? else if (sinfo->gso_type & SKB_GSO_TCPV6) > > > > ????????????? hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; > > > > -??????? else > > > > -??????????? return -EINVAL; > > > > +??????? else { > > > > +??????????? if (skb->data_len == 0) > &g...

...gt; > > > +++ b/include/linux/virtio_net.h > > > > @@ -112,8 +112,12 @@ static inline int > > > > virtio_net_hdr_from_skb(const struct sk_buff *skb, > > > > ????????????? hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; > > > > ????????? else if (sinfo->gso_type & SKB_GSO_TCPV6) > > > > ????????????? hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; > > > > -??????? else > > > > -??????????? return -EINVAL; > > > > +??????? else { > > > > +??????????? if (skb->data_len == 0) > &g...

...he new type. > + */ > ipv6_proxy_select_ident(skb); > + } > break; > default: > return -EINVAL; > @@ -619,6 +622,8 @@ static void macvtap_skb_to_vnet_hdr(const struct sk_buff *skb, > vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; > else if (sinfo->gso_type & SKB_GSO_TCPV6) > vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; > + else if (sinfo->gso_type & SKB_GSO_UDP) > + vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_UDP; > else > BUG(); > if (sinfo->gso_type & SKB_GSO_TCP_ECN) > @@ -95...