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virtio: remove Rx hotspots from early return

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Remove those hotspots which is unnecessary when early returning occurs.

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
This commit is contained in:
Ouyang Changchun 2015-02-09 09:14:13 +08:00 committed by Thomas Monjalon
parent da978dfdc4
commit e033c005c2
1 changed files with 22 additions and 9 deletions
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31
lib/librte_pmd_virtio/virtio_rxtx.c
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@ -476,13 +476,13 @@ uint16_t
virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
{
struct virtqueue *rxvq = rx_queue;
struct virtio_hw *hw = rxvq->hw;
struct virtio_hw *hw;
struct rte_mbuf *rxm, *new_mbuf;
uint16_t nb_used, num, nb_rx = 0;
uint16_t nb_used, num, nb_rx;
uint32_t len[VIRTIO_MBUF_BURST_SZ];
struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ];
int error;
uint32_t i, nb_enqueued = 0;
uint32_t i, nb_enqueued;
const uint32_t hdr_size = sizeof(struct virtio_net_hdr);
nb_used = VIRTQUEUE_NUSED(rxvq);
@ -499,6 +499,11 @@ virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
num = virtqueue_dequeue_burst_rx(rxvq, rcv_pkts, len, num);
PMD_RX_LOG(DEBUG, "used:%d dequeue:%d", nb_used, num);
hw = rxvq->hw;
nb_rx = 0;
nb_enqueued = 0;
for (i = 0; i < num ; i++) {
rxm = rcv_pkts[i];
@ -567,17 +572,17 @@ virtio_recv_mergeable_pkts(void *rx_queue,
uint16_t nb_pkts)
{
struct virtqueue *rxvq = rx_queue;
struct virtio_hw *hw = rxvq->hw;
struct virtio_hw *hw;
struct rte_mbuf *rxm, *new_mbuf;
uint16_t nb_used, num, nb_rx = 0;
uint16_t nb_used, num, nb_rx;
uint32_t len[VIRTIO_MBUF_BURST_SZ];
struct rte_mbuf *rcv_pkts[VIRTIO_MBUF_BURST_SZ];
struct rte_mbuf *prev;
int error;
uint32_t i = 0, nb_enqueued = 0;
uint32_t seg_num = 0;
uint16_t extra_idx = 0;
uint32_t seg_res = 0;
uint32_t i, nb_enqueued;
uint32_t seg_num;
uint16_t extra_idx;
uint32_t seg_res;
const uint32_t hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
nb_used = VIRTQUEUE_NUSED(rxvq);
@ -589,6 +594,14 @@ virtio_recv_mergeable_pkts(void *rx_queue,
PMD_RX_LOG(DEBUG, "used:%d\n", nb_used);
hw = rxvq->hw;
nb_rx = 0;
i = 0;
nb_enqueued = 0;
seg_num = 0;
extra_idx = 0;
seg_res = 0;
while (i < nb_used) {
struct virtio_net_hdr_mrg_rxbuf *header;