vhost: log vring desc buffer changes

Every time we copy a buf to vring desc, we need to log it.

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Signed-off-by: Victor Kaplansky <victork@redhat.com>
Tested-by: Pavel Fedin <p.fedin@samsung.com>

diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index 168b031..12ce0cc 100644 (file)
--- a/lib/librte_vhost/vhost_rxtx.c
+++ b/lib/librte_vhost/vhost_rxtx.c
@@ -140,7 +140,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
        struct rte_mbuf **pkts, uint32_t count)
 {
        struct vhost_virtqueue *vq;
-       struct vring_desc *desc;
+       struct vring_desc *desc, *hdr_desc;
        struct rte_mbuf *buff, *first_buff;
        /* The virtio_hdr is initialised to 0. */
        struct virtio_net_hdr_mrg_rxbuf virtio_hdr = {{0, 0, 0, 0, 0, 0}, 0};
@@ -223,6 +223,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
 
                /* Copy virtio_hdr to packet and increment buffer address */
                buff_hdr_addr = buff_addr;
+               hdr_desc = desc;
 
                /*
                 * If the descriptors are chained the header and data are
@@ -247,6 +248,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
                        rte_memcpy((void *)(uintptr_t)(buff_addr + vb_offset),
                                rte_pktmbuf_mtod_offset(buff, const void *, offset),
                                len_to_cpy);
+                       vhost_log_write(dev, desc->addr + vb_offset, len_to_cpy);
                        PRINT_PACKET(dev, (uintptr_t)(buff_addr + vb_offset),
                                len_to_cpy, 0);
 
@@ -304,6 +306,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
 
                rte_memcpy((void *)(uintptr_t)buff_hdr_addr,
                        (const void *)&virtio_hdr, vq->vhost_hlen);
+               vhost_log_write(dev, hdr_desc->addr, vq->vhost_hlen);
 
                PRINT_PACKET(dev, (uintptr_t)buff_hdr_addr, vq->vhost_hlen, 1);
 
@@ -383,6 +386,7 @@ copy_from_mbuf_to_vring(struct virtio_net *dev, uint32_t queue_id,
 
        rte_memcpy((void *)(uintptr_t)vb_hdr_addr,
                (const void *)&virtio_hdr, vq->vhost_hlen);
+       vhost_log_write(dev, vq->buf_vec[vec_idx].buf_addr, vq->vhost_hlen);
 
        PRINT_PACKET(dev, (uintptr_t)vb_hdr_addr, vq->vhost_hlen, 1);
 
@@ -427,6 +431,8 @@ copy_from_mbuf_to_vring(struct virtio_net *dev, uint32_t queue_id,
                rte_memcpy((void *)(uintptr_t)(vb_addr + vb_offset),
                        rte_pktmbuf_mtod_offset(pkt, const void *, seg_offset),
                        cpy_len);
+               vhost_log_write(dev, vq->buf_vec[vec_idx].buf_addr + vb_offset,
+                       cpy_len);
 
                PRINT_PACKET(dev,
                        (uintptr_t)(vb_addr + vb_offset),