similar to: [PATCH] vhost-net: fix range checking in mrg bufs case

This patch adds the mergeable RX buffers feature to vhost. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruNp net-next-p0/drivers/vhost/net.c net-next-v4/drivers/vhost/net.c --- net-next-p0/drivers/vhost/net.c 2010-03-22 12:04:38.000000000 -0700 +++ net-next-v4/drivers/vhost/net.c 2010-04-19 14:23:38.000000000 -0700 @@ -108,7 +108,7 @@ static void handle_tx(struct

This patch adds the mergeable RX buffers feature to vhost. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruNp net-next-p0/drivers/vhost/net.c net-next-v4/drivers/vhost/net.c --- net-next-p0/drivers/vhost/net.c 2010-03-22 12:04:38.000000000 -0700 +++ net-next-v4/drivers/vhost/net.c 2010-04-19 14:23:38.000000000 -0700 @@ -108,7 +108,7 @@ static void handle_tx(struct

This patch adds mergeable receive buffer support to vhost_net. +-DLS Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruNp net-next-v0/drivers/vhost/net.c net-next-v6/drivers/vhost/net.c --- net-next-v0/drivers/vhost/net.c 2010-04-24 21:36:54.000000000 -0700 +++ net-next-v6/drivers/vhost/net.c 2010-04-26 01:13:04.000000000 -0700 @@ -109,7 +109,7 @@ static void

This patch adds mergeable receive buffer support to vhost_net. +-DLS Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruNp net-next-v0/drivers/vhost/net.c net-next-v6/drivers/vhost/net.c --- net-next-v0/drivers/vhost/net.c 2010-04-24 21:36:54.000000000 -0700 +++ net-next-v6/drivers/vhost/net.c 2010-04-26 01:13:04.000000000 -0700 @@ -109,7 +109,7 @@ static void

Qemu supports up to UIO_MAXIOV s/g so we have to match that because guest drivers may rely on this. Allocate indirect and log arrays dynamically to avoid using too much contigious memory and make the length of hdr array to match the header length since each iovec entry has a least one byte. Test with copying large files w/ and w/o migration in both linux and windows guests. Signed-off-by: Jason

Qemu supports up to UIO_MAXIOV s/g so we have to match that because guest drivers may rely on this. Allocate indirect and log arrays dynamically to avoid using too much contigious memory and make the length of hdr array to match the header length since each iovec entry has a least one byte. Test with copying large files w/ and w/o migration in both linux and windows guests. Signed-off-by: Jason

This patch adds mergeable receive buffer support to vhost_net. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruNp net-next-v0/drivers/vhost/net.c net-next-v7/drivers/vhost/net.c --- net-next-v0/drivers/vhost/net.c 2010-04-24 21:36:54.000000000 -0700 +++ net-next-v7/drivers/vhost/net.c 2010-04-28 12:26:18.000000000 -0700 @@ -74,6 +74,23 @@ static int move_iovec_hdr(struct

This patch adds mergeable receive buffer support to vhost_net. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruNp net-next-v0/drivers/vhost/net.c net-next-v7/drivers/vhost/net.c --- net-next-v0/drivers/vhost/net.c 2010-04-24 21:36:54.000000000 -0700 +++ net-next-v7/drivers/vhost/net.c 2010-04-28 12:26:18.000000000 -0700 @@ -74,6 +74,23 @@ static int move_iovec_hdr(struct

This patch adds vnet_hdr processing for mergeable buffer support to vhost-net. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruN net-next-p1/drivers/vhost/net.c net-next-p2/drivers/vhost/net.c --- net-next-p1/drivers/vhost/net.c 2010-03-01 11:44:22.000000000 -0800 +++ net-next-p2/drivers/vhost/net.c 2010-03-02 13:01:34.000000000 -0800 @@ -109,7 +109,6 @@

This patch adds vnet_hdr processing for mergeable buffer support to vhost-net. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruN net-next-p1/drivers/vhost/net.c net-next-p2/drivers/vhost/net.c --- net-next-p1/drivers/vhost/net.c 2010-03-01 11:44:22.000000000 -0800 +++ net-next-p2/drivers/vhost/net.c 2010-03-02 13:01:34.000000000 -0800 @@ -109,7 +109,6 @@

This patch adds support for the Mergeable Receive Buffers feature to vhost_net. +-DLS Changes from previous revision: 1) renamed: vhost_discard_vq_desc -> vhost_discard_desc vhost_get_heads -> vhost_get_desc_n vhost_get_vq_desc -> vhost_get_desc 2) added heads as argument to ghost_get_desc_n 3) changed "vq->heads" from iovec to vring_used_elem, removed casts 4)

This patch adds support for the Mergeable Receive Buffers feature to vhost_net. +-DLS Changes from previous revision: 1) renamed: vhost_discard_vq_desc -> vhost_discard_desc vhost_get_heads -> vhost_get_desc_n vhost_get_vq_desc -> vhost_get_desc 2) added heads as argument to ghost_get_desc_n 3) changed "vq->heads" from iovec to vring_used_elem, removed casts 4)

This patch adds mergeable receive buffers support to vhost. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruNp net-next-v0/drivers/vhost/net.c net-next-v5/drivers/vhost/net.c --- net-next-v0/drivers/vhost/net.c 2010-04-22 11:31:57.000000000 -0700 +++ net-next-v5/drivers/vhost/net.c 2010-04-22 12:41:17.000000000 -0700 @@ -109,7 +109,7 @@ static void handle_tx(struct

This patch adds mergeable receive buffers support to vhost. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruNp net-next-v0/drivers/vhost/net.c net-next-v5/drivers/vhost/net.c --- net-next-v0/drivers/vhost/net.c 2010-04-22 11:31:57.000000000 -0700 +++ net-next-v5/drivers/vhost/net.c 2010-04-22 12:41:17.000000000 -0700 @@ -109,7 +109,7 @@ static void handle_tx(struct

This patch generalizes buffer handling functions to support multiple buffer heads. In-line for viewing, attached for applying. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruN net-next-p0/drivers/vhost/net.c net-next-p1/drivers/vhost/net.c --- net-next-p0/drivers/vhost/net.c 2010-02-24 12:59:24.000000000 -0800 +++ net-next-p1/drivers/vhost/net.c 2010-03-01

This patch generalizes buffer handling functions to support multiple buffer heads. In-line for viewing, attached for applying. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruN net-next-p0/drivers/vhost/net.c net-next-p1/drivers/vhost/net.c --- net-next-p0/drivers/vhost/net.c 2010-02-24 12:59:24.000000000 -0800 +++ net-next-p1/drivers/vhost/net.c 2010-03-01

This patch glues them all together and makes sure we notify whenever we don't have enough buffers to receive a max-sized packet, and adds the feature bit. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruN net-next-p2/drivers/vhost/net.c net-next-p3/drivers/vhost/net.c --- net-next-p2/drivers/vhost/net.c 2010-03-02 13:01:34.000000000 -0800 +++

This patch glues them all together and makes sure we notify whenever we don't have enough buffers to receive a max-sized packet, and adds the feature bit. Signed-off-by: David L Stevens <dlstevens at us.ibm.com> diff -ruN net-next-p2/drivers/vhost/net.c net-next-p3/drivers/vhost/net.c --- net-next-p2/drivers/vhost/net.c 2010-03-02 13:01:34.000000000 -0800 +++

On 2020/6/2 ??9:06, Michael S. Tsirkin wrote: > Convert vhost net to use the new format-agnostic API. > In particular, don't poke at vq internals such as the > heads array. > > Signed-off-by: Michael S. Tsirkin <mst at redhat.com> > --- > drivers/vhost/net.c | 153 +++++++++++++++++++++++--------------------- > 1 file changed, 81 insertions(+), 72 deletions(-)

When vhost support VIRTIO_VSOCK_F_MRG_RXBUF feature, it will merge big packet into rx vq. Signed-off-by: Yiwen Jiang <jiangyiwen at huawei.com> --- drivers/vhost/vsock.c | 117 +++++++++++++++++++++++++++++++------- include/linux/virtio_vsock.h | 1 + include/uapi/linux/virtio_vsock.h | 5 ++ 3 files changed, 102 insertions(+), 21 deletions(-) diff --git