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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, chenbo.xia@intel.com, david.marchand@redhat.com,
eperezma@redhat.com
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [PATCH v1 17/21] net/virtio-user: send shadow virtqueue info to the
backend
Date: Wed, 30 Nov 2022 16:56:35 +0100
Message-Id: <20221130155639.150553-18-maxime.coquelin@redhat.com>
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This patch adds sending the shadow control queue info
to the backend.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
.../net/virtio/virtio_user/virtio_user_dev.c | 28 ++++++++++++++++---
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 16a0e07413..1a5386a3f6 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -66,6 +66,18 @@ virtio_user_kick_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
.flags = 0, /* disable log */
};
+ if (queue_sel == dev->max_queue_pairs * 2) {
+ if (!dev->scvq) {
+ PMD_INIT_LOG(ERR, "(%s) Shadow control queue expected but missing",
+ dev->path);
+ goto err;
+ }
+
+ /* Use shadow control queue information */
+ vring = &dev->scvq->vq_split.ring;
+ pq_vring = &dev->scvq->vq_packed.ring;
+ }
+
if (dev->features & (1ULL << VIRTIO_F_RING_PACKED)) {
addr.desc_user_addr =
(uint64_t)(uintptr_t)pq_vring->desc;
@@ -118,9 +130,13 @@ static int
virtio_user_queue_setup(struct virtio_user_dev *dev,
int (*fn)(struct virtio_user_dev *, uint32_t))
{
- uint32_t i;
+ uint32_t i, nr_vq;
- for (i = 0; i < dev->max_queue_pairs * 2; ++i) {
+ nr_vq = dev->max_queue_pairs * 2;
+ if (dev->hw_cvq)
+ nr_vq++;
+
+ for (i = 0; i < nr_vq; i++) {
if (fn(dev, i) < 0) {
PMD_DRV_LOG(ERR, "(%s) setup VQ %u failed", dev->path, i);
return -1;
@@ -381,11 +397,15 @@ virtio_user_dev_init_mac(struct virtio_user_dev *dev, const char *mac)
static int
virtio_user_dev_init_notify(struct virtio_user_dev *dev)
{
- uint32_t i, j;
+ uint32_t i, j, nr_vq;
int callfd;
int kickfd;
- for (i = 0; i < dev->max_queue_pairs * 2; i++) {
+ nr_vq = dev->max_queue_pairs * 2;
+ if (dev->hw_cvq)
+ nr_vq++;
+
+ for (i = 0; i < nr_vq; i++) {
/* May use invalid flag, but some backend uses kickfd and
* callfd as criteria to judge if dev is alive. so finally we
* use real event_fd.
--
2.38.1