Before the commit
86d59b21468a ("net/virtio: support LRO"), features
in virtio PMD, is decided and properly set at device initialization
and will not be changed. But afterward, features could be changed in
virtio_dev_configure(), and will be re-negotiated if it's changed.
In virtio-user, device features is obtained at driver probe phase
only once, but we did not store it. So the added feature bits in
re-negotiation will fail.
To fix it, we store it down, and will be used to feature negotiation
either at device initialization phase or device configure phase.
Fixes:
e9efa4d93821 ("net/virtio-user: add new virtual PCI driver")
Cc: stable@dpdk.org
Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
1ULL << VIRTIO_F_VERSION_1 | \
1ULL << VIRTIO_F_IOMMU_PLATFORM)
1ULL << VIRTIO_F_VERSION_1 | \
1ULL << VIRTIO_F_IOMMU_PLATFORM)
+#define VIRTIO_PMD_SUPPORTED_GUEST_FEATURES \
+ (VIRTIO_PMD_DEFAULT_GUEST_FEATURES | \
+ 1u << VIRTIO_NET_F_GUEST_CSUM | \
+ 1u << VIRTIO_NET_F_GUEST_TSO4 | \
+ 1u << VIRTIO_NET_F_GUEST_TSO6)
/*
* CQ function prototype
*/
/*
* CQ function prototype
*/
/* Step 1: set features
* Make sure VHOST_USER_F_PROTOCOL_FEATURES is added if mq is enabled,
/* Step 1: set features
* Make sure VHOST_USER_F_PROTOCOL_FEATURES is added if mq is enabled,
- * and VIRTIO_NET_F_MAC is stripped.
+ * VIRTIO_NET_F_MAC and VIRTIO_NET_F_CTRL_VQ is stripped.
*/
features = dev->features;
if (dev->max_queue_pairs > 1)
features |= VHOST_USER_MQ;
features &= ~(1ull << VIRTIO_NET_F_MAC);
*/
features = dev->features;
if (dev->max_queue_pairs > 1)
features |= VHOST_USER_MQ;
features &= ~(1ull << VIRTIO_NET_F_MAC);
+ features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
ret = vhost_user_sock(dev->vhostfd, VHOST_USER_SET_FEATURES, &features);
if (ret < 0)
goto error;
ret = vhost_user_sock(dev->vhostfd, VHOST_USER_SET_FEATURES, &features);
if (ret < 0)
goto error;
}
if (vhost_user_sock(dev->vhostfd, VHOST_USER_GET_FEATURES,
}
if (vhost_user_sock(dev->vhostfd, VHOST_USER_GET_FEATURES,
+ &dev->device_features) < 0) {
PMD_INIT_LOG(ERR, "get_features failed: %s", strerror(errno));
return -1;
}
if (dev->mac_specified)
PMD_INIT_LOG(ERR, "get_features failed: %s", strerror(errno));
return -1;
}
if (dev->mac_specified)
- dev->features |= (1ull << VIRTIO_NET_F_MAC);
+ dev->device_features |= (1ull << VIRTIO_NET_F_MAC);
- if (!cq) {
- dev->features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
- /* Also disable features depends on VIRTIO_NET_F_CTRL_VQ */
- dev->features &= ~(1ull << VIRTIO_NET_F_CTRL_RX);
- dev->features &= ~(1ull << VIRTIO_NET_F_CTRL_VLAN);
- dev->features &= ~(1ull << VIRTIO_NET_F_GUEST_ANNOUNCE);
- dev->features &= ~(1ull << VIRTIO_NET_F_MQ);
- dev->features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
- } else {
- /* vhost user backend does not need to know ctrl-q, so
- * actually we need add this bit into features. However,
- * DPDK vhost-user does send features with this bit, so we
- * check it instead of OR it for now.
+ if (cq) {
+ /* device does not really need to know anything about CQ,
+ * so if necessary, we just claim to support CQ
- if (!(dev->features & (1ull << VIRTIO_NET_F_CTRL_VQ)))
- PMD_INIT_LOG(INFO, "vhost does not support ctrl-q");
+ dev->device_features |= (1ull << VIRTIO_NET_F_CTRL_VQ);
+ } else {
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
+ /* Also disable features depends on VIRTIO_NET_F_CTRL_VQ */
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_RX);
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_VLAN);
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_GUEST_ANNOUNCE);
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_MQ);
+ dev->device_features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
}
if (dev->max_queue_pairs > 1) {
}
if (dev->max_queue_pairs > 1) {
uint32_t max_queue_pairs;
uint32_t queue_pairs;
uint32_t queue_size;
uint32_t max_queue_pairs;
uint32_t queue_pairs;
uint32_t queue_size;
+ uint64_t features; /* the negotiated features with driver,
+ * and will be sync with device
+ */
+ uint64_t device_features; /* supported features by device */
uint8_t status;
uint8_t mac_addr[ETHER_ADDR_LEN];
char path[PATH_MAX];
uint8_t status;
uint8_t mac_addr[ETHER_ADDR_LEN];
char path[PATH_MAX];
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
+ /* unmask feature bits defined in vhost user protocol */
+ return dev->device_features & VIRTIO_PMD_SUPPORTED_GUEST_FEATURES;
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
{
struct virtio_user_dev *dev = virtio_user_get_dev(hw);
- dev->features = features;
+ dev->features = features & dev->device_features;