From cf412ff7e978cacbb4228fb74248f16563c74861 Mon Sep 17 00:00:00 2001 From: Thierry Herbelot Date: Fri, 28 May 2021 15:20:38 +0200 Subject: [PATCH] net/virtio: fix kernel set features for multi-queue device Restore the original code, where VHOST_SET_FEATURES is applied to all vhostfds of the device. Fixes: cc0151b34dee ("net/virtio: add virtio-user features ops") Cc: stable@dpdk.org Signed-off-by: Thierry Herbelot Reviewed-by: Maxime Coquelin --- drivers/net/virtio/virtio_user/vhost_kernel.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/net/virtio/virtio_user/vhost_kernel.c b/drivers/net/virtio/virtio_user/vhost_kernel.c index ad46f10a93..d65f89e1fc 100644 --- a/drivers/net/virtio/virtio_user/vhost_kernel.c +++ b/drivers/net/virtio/virtio_user/vhost_kernel.c @@ -158,6 +158,8 @@ static int vhost_kernel_set_features(struct virtio_user_dev *dev, uint64_t features) { struct vhost_kernel_data *data = dev->backend_data; + uint32_t i; + int ret; /* We don't need memory protection here */ features &= ~(1ULL << VIRTIO_F_IOMMU_PLATFORM); @@ -166,7 +168,16 @@ vhost_kernel_set_features(struct virtio_user_dev *dev, uint64_t features) features &= ~VHOST_KERNEL_HOST_OFFLOADS_MASK; features &= ~(1ULL << VIRTIO_NET_F_MQ); - return vhost_kernel_ioctl(data->vhostfds[0], VHOST_SET_FEATURES, &features); + for (i = 0; i < dev->max_queue_pairs; ++i) { + if (data->vhostfds[i] < 0) + continue; + + ret = vhost_kernel_ioctl(data->vhostfds[i], VHOST_SET_FEATURES, &features); + if (ret < 0) + return ret; + } + + return 0; } static int -- 2.20.1