Displaying 3 results from an estimated 3 matches for "virtnet_add_sg".
2023 Jun 22
1
[PATCH vhost v10 10/10] virtio_net: support dma premapped
...= (rq); \
> + virtnet_get_buf_ctx(_rq->vq, _rq->premapped, plen, pctx); \
> +})
> +
> +#define virtnet_sq_get_buf(sq, plen, pctx) \
> +({ \
> + typeof(sq) _sq = (sq); \
> + virtnet_get_buf_ctx(_sq->vq, _sq->premapped, plen, pctx); \
> +})
> +
> +static int virtnet_add_sg(struct virtqueue *vq, bool premapped,
> + struct scatterlist *sg, unsigned int num, bool out,
> + void *data, void *ctx, gfp_t gfp)
> +{
> + enum dma_data_direction dir;
> + struct device *dev;
> + int err, ret;
> +
> + if (!premapped)
> + return virtqueue_add_sg...
2023 Jun 02
12
[PATCH vhost v10 00/10] virtio core prepares for AF_XDP
## About DMA APIs
Now, virtio may can not work with DMA APIs when virtio features do not have
VIRTIO_F_ACCESS_PLATFORM.
1. I tried to let DMA APIs return phy address by virtio-device. But DMA APIs just
work with the "real" devices.
2. I tried to let xsk support callballs to get phy address from virtio-net
driver as the dma address. But the maintainers of xsk may want to use
2023 Jun 02
12
[PATCH vhost v10 00/10] virtio core prepares for AF_XDP
## About DMA APIs
Now, virtio may can not work with DMA APIs when virtio features do not have
VIRTIO_F_ACCESS_PLATFORM.
1. I tried to let DMA APIs return phy address by virtio-device. But DMA APIs just
work with the "real" devices.
2. I tried to let xsk support callballs to get phy address from virtio-net
driver as the dma address. But the maintainers of xsk may want to use