From: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
To: virtualization@lists.linux-foundation.org
Cc: Richard Weinberger <richard@nod.at>,
Anton Ivanov <anton.ivanov@cambridgegreys.com>,
Johannes Berg <johannes@sipsolutions.net>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Hans de Goede <hdegoede@redhat.com>,
Mark Gross <markgross@kernel.org>,
Vadim Pasternak <vadimp@nvidia.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Cornelia Huck <cohuck@redhat.com>,
Halil Pasic <pasic@linux.ibm.com>,
Eric Farman <farman@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
Vincent Whitchurch <vincent.whitchurch@axis.com>,
linux-um@lists.infradead.org, netdev@vger.kernel.org,
platform-driver-x86@vger.kernel.org,
linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org,
kvm@vger.kernel.org, bpf@vger.kernel.org,
kangjie.xu@linux.alibaba.com
Subject: [PATCH v12 05/40] virtio_ring: split vring_virtqueue
Date: Wed, 20 Jul 2022 11:04:01 +0800 [thread overview]
Message-ID: <20220720030436.79520-6-xuanzhuo@linux.alibaba.com> (raw)
In-Reply-To: <20220720030436.79520-1-xuanzhuo@linux.alibaba.com>
Separate the two inline structures(split and packed) from the structure
vring_virtqueue.
In this way, we can use these two structures later to pass parameters
and retain temporary variables.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
---
drivers/virtio/virtio_ring.c | 116 ++++++++++++++++++-----------------
1 file changed, 60 insertions(+), 56 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index a3d76fd87983..1bc5794e9739 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -85,6 +85,64 @@ struct vring_desc_extra {
u16 next; /* The next desc state in a list. */
};
+struct vring_virtqueue_split {
+ /* Actual memory layout for this queue. */
+ struct vring vring;
+
+ /* Last written value to avail->flags */
+ u16 avail_flags_shadow;
+
+ /*
+ * Last written value to avail->idx in
+ * guest byte order.
+ */
+ u16 avail_idx_shadow;
+
+ /* Per-descriptor state. */
+ struct vring_desc_state_split *desc_state;
+ struct vring_desc_extra *desc_extra;
+
+ /* DMA address and size information */
+ dma_addr_t queue_dma_addr;
+ size_t queue_size_in_bytes;
+};
+
+struct vring_virtqueue_packed {
+ /* Actual memory layout for this queue. */
+ struct {
+ unsigned int num;
+ struct vring_packed_desc *desc;
+ struct vring_packed_desc_event *driver;
+ struct vring_packed_desc_event *device;
+ } vring;
+
+ /* Driver ring wrap counter. */
+ bool avail_wrap_counter;
+
+ /* Avail used flags. */
+ u16 avail_used_flags;
+
+ /* Index of the next avail descriptor. */
+ u16 next_avail_idx;
+
+ /*
+ * Last written value to driver->flags in
+ * guest byte order.
+ */
+ u16 event_flags_shadow;
+
+ /* Per-descriptor state. */
+ struct vring_desc_state_packed *desc_state;
+ struct vring_desc_extra *desc_extra;
+
+ /* DMA address and size information */
+ dma_addr_t ring_dma_addr;
+ dma_addr_t driver_event_dma_addr;
+ dma_addr_t device_event_dma_addr;
+ size_t ring_size_in_bytes;
+ size_t event_size_in_bytes;
+};
+
struct vring_virtqueue {
struct virtqueue vq;
@@ -124,64 +182,10 @@ struct vring_virtqueue {
union {
/* Available for split ring */
- struct {
- /* Actual memory layout for this queue. */
- struct vring vring;
-
- /* Last written value to avail->flags */
- u16 avail_flags_shadow;
-
- /*
- * Last written value to avail->idx in
- * guest byte order.
- */
- u16 avail_idx_shadow;
-
- /* Per-descriptor state. */
- struct vring_desc_state_split *desc_state;
- struct vring_desc_extra *desc_extra;
-
- /* DMA address and size information */
- dma_addr_t queue_dma_addr;
- size_t queue_size_in_bytes;
- } split;
+ struct vring_virtqueue_split split;
/* Available for packed ring */
- struct {
- /* Actual memory layout for this queue. */
- struct {
- unsigned int num;
- struct vring_packed_desc *desc;
- struct vring_packed_desc_event *driver;
- struct vring_packed_desc_event *device;
- } vring;
-
- /* Driver ring wrap counter. */
- bool avail_wrap_counter;
-
- /* Avail used flags. */
- u16 avail_used_flags;
-
- /* Index of the next avail descriptor. */
- u16 next_avail_idx;
-
- /*
- * Last written value to driver->flags in
- * guest byte order.
- */
- u16 event_flags_shadow;
-
- /* Per-descriptor state. */
- struct vring_desc_state_packed *desc_state;
- struct vring_desc_extra *desc_extra;
-
- /* DMA address and size information */
- dma_addr_t ring_dma_addr;
- dma_addr_t driver_event_dma_addr;
- dma_addr_t device_event_dma_addr;
- size_t ring_size_in_bytes;
- size_t event_size_in_bytes;
- } packed;
+ struct vring_virtqueue_packed packed;
};
/* How to notify other side. FIXME: commonalize hcalls! */
--
2.31.0
next prev parent reply other threads:[~2022-07-20 3:05 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-20 3:03 [PATCH v12 00/40] virtio pci support VIRTIO_F_RING_RESET Xuan Zhuo
2022-07-20 3:03 ` [PATCH v12 01/40] virtio: record the maximum queue num supported by the device Xuan Zhuo
2022-07-21 3:36 ` Jason Wang
2022-07-20 3:03 ` [PATCH v12 02/40] virtio: struct virtio_config_ops add callbacks for queue_reset Xuan Zhuo
2022-07-21 3:39 ` Jason Wang
2022-07-20 3:03 ` [PATCH v12 03/40] virtio_ring: update the document of the virtqueue_detach_unused_buf for queue reset Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 04/40] virtio_ring: extract the logic of freeing vring Xuan Zhuo
2022-07-20 3:04 ` Xuan Zhuo [this message]
2022-07-20 3:04 ` [PATCH v12 06/40] virtio_ring: introduce virtqueue_init() Xuan Zhuo
2022-07-21 7:07 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 07/40] virtio_ring: split: introduce vring_free_split() Xuan Zhuo
2022-07-21 7:08 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 08/40] virtio_ring: split: extract the logic of alloc queue Xuan Zhuo
2022-07-21 9:13 ` Jason Wang
2022-07-22 3:47 ` Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 09/40] virtio_ring: split: extract the logic of alloc state and extra Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 10/40] virtio_ring: split: extract the logic of attach vring Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 11/40] virtio_ring: split: extract the logic of vring init Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 12/40] virtio_ring: split: introduce virtqueue_reinit_split() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 13/40] virtio_ring: split: reserve vring_align, may_reduce_num Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 14/40] virtio_ring: split: introduce virtqueue_resize_split() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 15/40] virtio_ring: packed: introduce vring_free_packed Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 16/40] virtio_ring: packed: extract the logic of alloc queue Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 17/40] virtio_ring: packed: extract the logic of alloc state and extra Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 18/40] virtio_ring: packed: extract the logic of attach vring Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 19/40] virtio_ring: packed: extract the logic of vring init Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 20/40] virtio_ring: packed: introduce virtqueue_reinit_packed() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 21/40] virtio_ring: packed: introduce virtqueue_resize_packed() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 22/40] virtio_ring: introduce virtqueue_resize() Xuan Zhuo
2022-07-21 9:15 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 23/40] virtio_pci: struct virtio_pci_common_cfg add queue_notify_data Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 24/40] virtio: allow to unbreak/break virtqueue individually Xuan Zhuo
2022-07-21 9:14 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 25/40] virtio: queue_reset: add VIRTIO_F_RING_RESET Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 26/40] virtio_ring: struct virtqueue introduce reset Xuan Zhuo
2022-07-21 9:14 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 27/40] virtio_pci: struct virtio_pci_common_cfg add queue_reset Xuan Zhuo
2022-07-21 9:14 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 28/40] virtio_pci: introduce helper to get/set queue reset Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 29/40] virtio_pci: extract the logic of active vq for modern pci Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 30/40] virtio_pci: support VIRTIO_F_RING_RESET Xuan Zhuo
2022-07-21 9:15 ` Jason Wang
2022-07-22 3:05 ` Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 31/40] virtio: find_vqs() add arg sizes Xuan Zhuo
2022-07-21 9:17 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 32/40] virtio_pci: support the arg sizes of find_vqs() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 33/40] virtio_mmio: " Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 34/40] virtio: add helper virtio_find_vqs_ctx_size() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 35/40] virtio_net: set the default max ring size by find_vqs() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 36/40] virtio_net: get ringparam by virtqueue_get_vring_max_size() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 37/40] virtio_net: split free_unused_bufs() Xuan Zhuo
2022-07-20 3:04 ` [PATCH v12 38/40] virtio_net: support rx queue resize Xuan Zhuo
2022-07-21 9:25 ` Jason Wang
2022-07-25 6:38 ` Xuan Zhuo
2022-07-25 6:57 ` Jason Wang
2022-07-25 7:21 ` Xuan Zhuo
2022-07-25 7:28 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 39/40] virtio_net: support tx " Xuan Zhuo
2022-07-21 9:30 ` Jason Wang
2022-07-20 3:04 ` [PATCH v12 40/40] virtio_net: support set_ringparam Xuan Zhuo
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