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net/virtio: pack virtqueue structure

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This patch optimizes packing of the virtqueue
struct by moving fields around to fill holes.

Offset field is not used and so can be removed.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
Tested-by: Balazs Nemeth <bnemeth@redhat.com>
This commit is contained in:
Maxime Coquelin 2021-03-16 10:38:25 +01:00 committed by Chenbo Xia
parent b59d4d5502
commit 97bd53721b
1 changed files with 9 additions and 9 deletions
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18
drivers/net/virtio/virtqueue.h
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@ -244,6 +244,15 @@ struct virtqueue {
uint16_t vq_avail_idx; /**< sync until needed */
uint16_t vq_free_thresh; /**< free threshold */
/**
* Head of the free chain in the descriptor table. If
* there are no free descriptors, this will be set to
* VQ_RING_DESC_CHAIN_END.
*/
uint16_t vq_desc_head_idx;
uint16_t vq_desc_tail_idx;
uint16_t vq_queue_index; /**< PCI queue index */
void *vq_ring_virt_mem; /**< linear address of vring*/
unsigned int vq_ring_size;
@ -256,15 +265,6 @@ struct virtqueue {
rte_iova_t vq_ring_mem; /**< physical address of vring,
* or virtual address for virtio_user. */
/**
* Head of the free chain in the descriptor table. If
* there are no free descriptors, this will be set to
* VQ_RING_DESC_CHAIN_END.
*/
uint16_t vq_desc_head_idx;
uint16_t vq_desc_tail_idx;
uint16_t vq_queue_index;
uint16_t offset; /**< relative offset to obtain addr in mbuf */
uint16_t *notify_addr;
struct rte_mbuf **sw_ring; /**< RX software ring. */
struct vq_desc_extra vq_descx[0];