@@ -542,6 +542,12 @@ static struct sk_buff *ptr_to_skb(void *ptr)
return (struct sk_buff *)((unsigned long)ptr & ~VIRTIO_ORPHAN_FLAG);
}
+static void sg_fill_dma(struct scatterlist *sg, dma_addr_t addr, u32 len)
+{
+ sg->dma_address = addr;
+ sg->length = len;
+}
+
static void __free_old_xmit(struct send_queue *sq, struct netdev_queue *txq,
bool in_napi, struct virtnet_sq_free_stats *stats)
{
@@ -915,8 +921,7 @@ static void virtnet_rq_init_one_sg(struct receive_queue *rq, void *buf, u32 len)
addr = dma->addr - sizeof(*dma) + offset;
sg_init_table(rq->sg, 1);
- rq->sg[0].dma_address = addr;
- rq->sg[0].length = len;
+ sg_fill_dma(rq->sg, addr, len);
}
static void *virtnet_rq_alloc(struct receive_queue *rq, u32 size, gfp_t gfp)
@@ -1068,12 +1073,6 @@ static void check_sq_full_and_disable(struct virtnet_info *vi,
}
}
-static void sg_fill_dma(struct scatterlist *sg, dma_addr_t addr, u32 len)
-{
- sg->dma_address = addr;
- sg->length = len;
-}
-
static struct xdp_buff *buf_to_xdp(struct virtnet_info *vi,
struct receive_queue *rq, void *buf, u32 len)
{
@@ -1354,7 +1353,8 @@ static int virtnet_add_recvbuf_xsk(struct virtnet_info *vi, struct receive_queue
sg_init_table(rq->sg, 1);
sg_fill_dma(rq->sg, addr, len);
- err = virtqueue_add_inbuf(rq->vq, rq->sg, 1, xsk_buffs[i], gfp);
+ err = virtqueue_add_inbuf_premapped(rq->vq, rq->sg, 1, xsk_buffs[i],
+ NULL, true, gfp);
if (err)
goto err;
}
@@ -2431,7 +2431,8 @@ static int add_recvbuf_small(struct virtnet_info *vi, struct receive_queue *rq,
virtnet_rq_init_one_sg(rq, buf, vi->hdr_len + GOOD_PACKET_LEN);
- err = virtqueue_add_inbuf_ctx(rq->vq, rq->sg, 1, buf, ctx, gfp);
+ err = virtqueue_add_inbuf_premapped(rq->vq, rq->sg, 1, buf, ctx,
+ rq->do_dma, gfp);
if (err < 0) {
if (rq->do_dma)
virtnet_rq_unmap(rq, buf, 0);
@@ -2546,7 +2547,8 @@ static int add_recvbuf_mergeable(struct virtnet_info *vi,
virtnet_rq_init_one_sg(rq, buf, len);
ctx = mergeable_len_to_ctx(len + room, headroom);
- err = virtqueue_add_inbuf_ctx(rq->vq, rq->sg, 1, buf, ctx, gfp);
+ err = virtqueue_add_inbuf_premapped(rq->vq, rq->sg, 1, buf, ctx,
+ rq->do_dma, gfp);
if (err < 0) {
if (rq->do_dma)
virtnet_rq_unmap(rq, buf, 0);
virtio-net rq submits premapped per-buffer by setting sg page to NULL; Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> --- drivers/net/virtio_net.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-)