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net/virtio: use pointer to replace memcpy

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To use pointer instead of memcpy can save many cycles in the funciton
virtio_send_command.

Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
Acked-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
This commit is contained in:
Zhiyong Yang 2017-08-11 10:13:18 +08:00 committed by Yuanhan Liu
parent e60340c4f7
commit da4f2e4bb7
1 changed files with 3 additions and 4 deletions
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7
drivers/net/virtio/virtio_ethdev.c
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@ -163,7 +163,7 @@ virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
uint32_t head, i;
int k, sum = 0;
virtio_net_ctrl_ack status = ~0;
struct virtio_pmd_ctrl result;
struct virtio_pmd_ctrl *result;
struct virtqueue *vq;
ctrl->status = status;
@ -254,10 +254,9 @@ virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
vq->vq_free_cnt, vq->vq_desc_head_idx);
memcpy(&result, cvq->virtio_net_hdr_mz->addr,
sizeof(struct virtio_pmd_ctrl));
result = cvq->virtio_net_hdr_mz->addr;
return result.status;
return result->status;
}
static int