net/virtio: allow virtual address to fill vring descriptors

[dpdk.git] / drivers / net / virtio / virtqueue.h

diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h
index 17c1ea1..455aaaf 100644 (file)
--- a/drivers/net/virtio/virtqueue.h
+++ b/drivers/net/virtio/virtqueue.h
@@ -66,6 +66,14 @@ struct rte_mbuf;
 
 #define VIRTQUEUE_MAX_NAME_SZ 32
 
+#ifdef RTE_VIRTIO_USER
+#define MBUF_DATA_DMA_ADDR(mb, offset) \
+       ((uint64_t)((uintptr_t)(*(void **)((uintptr_t)mb + offset)) \
+                       + (mb)->data_off))
+#else /* RTE_VIRTIO_USER */
+#define MBUF_DATA_DMA_ADDR(mb, offset) rte_mbuf_data_dma_addr(mb)
+#endif /* RTE_VIRTIO_USER */
+
 #define VTNET_SQ_RQ_QUEUE_IDX 0
 #define VTNET_SQ_TQ_QUEUE_IDX 1
 #define VTNET_SQ_CQ_QUEUE_IDX 2
@@ -175,6 +183,7 @@ struct virtqueue {
        unsigned int vq_ring_size;
 
        phys_addr_t vq_ring_mem; /**< physical address of vring */
+                               /**< use virtual address for virtio-user. */
 
        /**
         * Head of the free chain in the descriptor table. If
@@ -184,6 +193,7 @@ struct virtqueue {
        uint16_t  vq_desc_head_idx;
        uint16_t  vq_desc_tail_idx;
        uint16_t  vq_queue_index;   /**< PCI queue index */
+       uint16_t offset; /**< relative offset to obtain addr in mbuf */
        uint16_t  *notify_addr;
        int configured;
        struct rte_mbuf **sw_ring;  /**< RX software ring. */