1 files changed, 11 insertions, 261 deletions

diff --git a/drivers/net/virtio/virtio_rxtx_simple.c b/drivers/net/virtio/virtio_rxtx_simple.c
index 6517aa80..b651e53b 100644
--- a/drivers/net/virtio/virtio_rxtx_simple.c
+++ b/drivers/net/virtio/virtio_rxtx_simple.c
@@ -37,8 +37,6 @@
 #include <string.h>
 #include <errno.h>
 
-#include <tmmintrin.h>
-
 #include <rte_cycles.h>
 #include <rte_memory.h>
 #include <rte_memzone.h>
@@ -53,14 +51,7 @@
 #include <rte_errno.h>
 #include <rte_byteorder.h>
 
-#include "virtio_logs.h"
-#include "virtio_ethdev.h"
-#include "virtqueue.h"
-#include "virtio_rxtx.h"
-
-#define RTE_VIRTIO_VPMD_RX_BURST 32
-#define RTE_VIRTIO_DESC_PER_LOOP 8
-#define RTE_VIRTIO_VPMD_RX_REARM_THRESH RTE_VIRTIO_VPMD_RX_BURST
+#include "virtio_rxtx_simple.h"
 
 #ifndef __INTEL_COMPILER
 #pragma GCC diagnostic ignored "-Wcast-qual"
@@ -92,257 +83,6 @@ virtqueue_enqueue_recv_refill_simple(struct virtqueue *vq,
 	return 0;
 }
 
-static inline void
-virtio_rxq_rearm_vec(struct virtnet_rx *rxvq)
-{
-	int i;
-	uint16_t desc_idx;
-	struct rte_mbuf **sw_ring;
-	struct vring_desc *start_dp;
-	int ret;
-	struct virtqueue *vq = rxvq->vq;
-
-	desc_idx = vq->vq_avail_idx & (vq->vq_nentries - 1);
-	sw_ring = &vq->sw_ring[desc_idx];
-	start_dp = &vq->vq_ring.desc[desc_idx];
-
-	ret = rte_mempool_get_bulk(rxvq->mpool, (void **)sw_ring,
-		RTE_VIRTIO_VPMD_RX_REARM_THRESH);
-	if (unlikely(ret)) {
-		rte_eth_devices[rxvq->port_id].data->rx_mbuf_alloc_failed +=
-			RTE_VIRTIO_VPMD_RX_REARM_THRESH;
-		return;
-	}
-
-	for (i = 0; i < RTE_VIRTIO_VPMD_RX_REARM_THRESH; i++) {
-		uintptr_t p;
-
-		p = (uintptr_t)&sw_ring[i]->rearm_data;
-		*(uint64_t *)p = rxvq->mbuf_initializer;
-
-		start_dp[i].addr =
-			VIRTIO_MBUF_ADDR(sw_ring[i], vq) +
-			RTE_PKTMBUF_HEADROOM - vq->hw->vtnet_hdr_size;
-		start_dp[i].len = sw_ring[i]->buf_len -
-			RTE_PKTMBUF_HEADROOM + vq->hw->vtnet_hdr_size;
-	}
-
-	vq->vq_avail_idx += RTE_VIRTIO_VPMD_RX_REARM_THRESH;
-	vq->vq_free_cnt -= RTE_VIRTIO_VPMD_RX_REARM_THRESH;
-	vq_update_avail_idx(vq);
-}
-
-/* virtio vPMD receive routine, only accept(nb_pkts >= RTE_VIRTIO_DESC_PER_LOOP)
- *
- * This routine is for non-mergeable RX, one desc for each guest buffer.
- * This routine is based on the RX ring layout optimization. Each entry in the
- * avail ring points to the desc with the same index in the desc ring and this
- * will never be changed in the driver.
- *
- * - nb_pkts < RTE_VIRTIO_DESC_PER_LOOP, just return no packet
- */
-uint16_t
-virtio_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
-	uint16_t nb_pkts)
-{
-	struct virtnet_rx *rxvq = rx_queue;
-	struct virtqueue *vq = rxvq->vq;
-	uint16_t nb_used;
-	uint16_t desc_idx;
-	struct vring_used_elem *rused;
-	struct rte_mbuf **sw_ring;
-	struct rte_mbuf **sw_ring_end;
-	uint16_t nb_pkts_received;
-	__m128i shuf_msk1, shuf_msk2, len_adjust;
-
-	shuf_msk1 = _mm_set_epi8(
-		0xFF, 0xFF, 0xFF, 0xFF,
-		0xFF, 0xFF,		/* vlan tci */
-		5, 4,			/* dat len */
-		0xFF, 0xFF, 5, 4,	/* pkt len */
-		0xFF, 0xFF, 0xFF, 0xFF	/* packet type */
-
-	);
-
-	shuf_msk2 = _mm_set_epi8(
-		0xFF, 0xFF, 0xFF, 0xFF,
-		0xFF, 0xFF,		/* vlan tci */
-		13, 12,			/* dat len */
-		0xFF, 0xFF, 13, 12,	/* pkt len */
-		0xFF, 0xFF, 0xFF, 0xFF	/* packet type */
-	);
-
-	/* Subtract the header length.
-	*  In which case do we need the header length in used->len ?
-	*/
-	len_adjust = _mm_set_epi16(
-		0, 0,
-		0,
-		(uint16_t)-vq->hw->vtnet_hdr_size,
-		0, (uint16_t)-vq->hw->vtnet_hdr_size,
-		0, 0);
-
-	if (unlikely(nb_pkts < RTE_VIRTIO_DESC_PER_LOOP))
-		return 0;
-
-	nb_used = VIRTQUEUE_NUSED(vq);
-
-	rte_compiler_barrier();
-
-	if (unlikely(nb_used == 0))
-		return 0;
-
-	nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_VIRTIO_DESC_PER_LOOP);
-	nb_used = RTE_MIN(nb_used, nb_pkts);
-
-	desc_idx = (uint16_t)(vq->vq_used_cons_idx & (vq->vq_nentries - 1));
-	rused = &vq->vq_ring.used->ring[desc_idx];
-	sw_ring  = &vq->sw_ring[desc_idx];
-	sw_ring_end = &vq->sw_ring[vq->vq_nentries];
-
-	_mm_prefetch((const void *)rused, _MM_HINT_T0);
-
-	if (vq->vq_free_cnt >= RTE_VIRTIO_VPMD_RX_REARM_THRESH) {
-		virtio_rxq_rearm_vec(rxvq);
-		if (unlikely(virtqueue_kick_prepare(vq)))
-			virtqueue_notify(vq);
-	}
-
-	for (nb_pkts_received = 0;
-		nb_pkts_received < nb_used;) {
-		__m128i desc[RTE_VIRTIO_DESC_PER_LOOP / 2];
-		__m128i mbp[RTE_VIRTIO_DESC_PER_LOOP / 2];
-		__m128i pkt_mb[RTE_VIRTIO_DESC_PER_LOOP];
-
-		mbp[0] = _mm_loadu_si128((__m128i *)(sw_ring + 0));
-		desc[0] = _mm_loadu_si128((__m128i *)(rused + 0));
-		_mm_storeu_si128((__m128i *)&rx_pkts[0], mbp[0]);
-
-		mbp[1] = _mm_loadu_si128((__m128i *)(sw_ring + 2));
-		desc[1] = _mm_loadu_si128((__m128i *)(rused + 2));
-		_mm_storeu_si128((__m128i *)&rx_pkts[2], mbp[1]);
-
-		mbp[2] = _mm_loadu_si128((__m128i *)(sw_ring + 4));
-		desc[2] = _mm_loadu_si128((__m128i *)(rused + 4));
-		_mm_storeu_si128((__m128i *)&rx_pkts[4], mbp[2]);
-
-		mbp[3] = _mm_loadu_si128((__m128i *)(sw_ring + 6));
-		desc[3] = _mm_loadu_si128((__m128i *)(rused + 6));
-		_mm_storeu_si128((__m128i *)&rx_pkts[6], mbp[3]);
-
-		pkt_mb[1] = _mm_shuffle_epi8(desc[0], shuf_msk2);
-		pkt_mb[0] = _mm_shuffle_epi8(desc[0], shuf_msk1);
-		pkt_mb[1] = _mm_add_epi16(pkt_mb[1], len_adjust);
-		pkt_mb[0] = _mm_add_epi16(pkt_mb[0], len_adjust);
-		_mm_storeu_si128((void *)&rx_pkts[1]->rx_descriptor_fields1,
-			pkt_mb[1]);
-		_mm_storeu_si128((void *)&rx_pkts[0]->rx_descriptor_fields1,
-			pkt_mb[0]);
-
-		pkt_mb[3] = _mm_shuffle_epi8(desc[1], shuf_msk2);
-		pkt_mb[2] = _mm_shuffle_epi8(desc[1], shuf_msk1);
-		pkt_mb[3] = _mm_add_epi16(pkt_mb[3], len_adjust);
-		pkt_mb[2] = _mm_add_epi16(pkt_mb[2], len_adjust);
-		_mm_storeu_si128((void *)&rx_pkts[3]->rx_descriptor_fields1,
-			pkt_mb[3]);
-		_mm_storeu_si128((void *)&rx_pkts[2]->rx_descriptor_fields1,
-			pkt_mb[2]);
-
-		pkt_mb[5] = _mm_shuffle_epi8(desc[2], shuf_msk2);
-		pkt_mb[4] = _mm_shuffle_epi8(desc[2], shuf_msk1);
-		pkt_mb[5] = _mm_add_epi16(pkt_mb[5], len_adjust);
-		pkt_mb[4] = _mm_add_epi16(pkt_mb[4], len_adjust);
-		_mm_storeu_si128((void *)&rx_pkts[5]->rx_descriptor_fields1,
-			pkt_mb[5]);
-		_mm_storeu_si128((void *)&rx_pkts[4]->rx_descriptor_fields1,
-			pkt_mb[4]);
-
-		pkt_mb[7] = _mm_shuffle_epi8(desc[3], shuf_msk2);
-		pkt_mb[6] = _mm_shuffle_epi8(desc[3], shuf_msk1);
-		pkt_mb[7] = _mm_add_epi16(pkt_mb[7], len_adjust);
-		pkt_mb[6] = _mm_add_epi16(pkt_mb[6], len_adjust);
-		_mm_storeu_si128((void *)&rx_pkts[7]->rx_descriptor_fields1,
-			pkt_mb[7]);
-		_mm_storeu_si128((void *)&rx_pkts[6]->rx_descriptor_fields1,
-			pkt_mb[6]);
-
-		if (unlikely(nb_used <= RTE_VIRTIO_DESC_PER_LOOP)) {
-			if (sw_ring + nb_used <= sw_ring_end)
-				nb_pkts_received += nb_used;
-			else
-				nb_pkts_received += sw_ring_end - sw_ring;
-			break;
-		} else {
-			if (unlikely(sw_ring + RTE_VIRTIO_DESC_PER_LOOP >=
-				sw_ring_end)) {
-				nb_pkts_received += sw_ring_end - sw_ring;
-				break;
-			} else {
-				nb_pkts_received += RTE_VIRTIO_DESC_PER_LOOP;
-
-				rx_pkts += RTE_VIRTIO_DESC_PER_LOOP;
-				sw_ring += RTE_VIRTIO_DESC_PER_LOOP;
-				rused   += RTE_VIRTIO_DESC_PER_LOOP;
-				nb_used -= RTE_VIRTIO_DESC_PER_LOOP;
-			}
-		}
-	}
-
-	vq->vq_used_cons_idx += nb_pkts_received;
-	vq->vq_free_cnt += nb_pkts_received;
-	rxvq->stats.packets += nb_pkts_received;
-	return nb_pkts_received;
-}
-
-#define VIRTIO_TX_FREE_THRESH 32
-#define VIRTIO_TX_MAX_FREE_BUF_SZ 32
-#define VIRTIO_TX_FREE_NR 32
-/* TODO: vq->tx_free_cnt could mean num of free slots so we could avoid shift */
-static inline void
-virtio_xmit_cleanup(struct virtqueue *vq)
-{
-	uint16_t i, desc_idx;
-	uint32_t nb_free = 0;
-	struct rte_mbuf *m, *free[VIRTIO_TX_MAX_FREE_BUF_SZ];
-
-	desc_idx = (uint16_t)(vq->vq_used_cons_idx &
-		   ((vq->vq_nentries >> 1) - 1));
-	m = (struct rte_mbuf *)vq->vq_descx[desc_idx++].cookie;
-	m = __rte_pktmbuf_prefree_seg(m);
-	if (likely(m != NULL)) {
-		free[0] = m;
-		nb_free = 1;
-		for (i = 1; i < VIRTIO_TX_FREE_NR; i++) {
-			m = (struct rte_mbuf *)vq->vq_descx[desc_idx++].cookie;
-			m = __rte_pktmbuf_prefree_seg(m);
-			if (likely(m != NULL)) {
-				if (likely(m->pool == free[0]->pool))
-					free[nb_free++] = m;
-				else {
-					rte_mempool_put_bulk(free[0]->pool,
-						(void **)free,
-						RTE_MIN(RTE_DIM(free),
-							nb_free));
-					free[0] = m;
-					nb_free = 1;
-				}
-			}
-		}
-		rte_mempool_put_bulk(free[0]->pool, (void **)free,
-			RTE_MIN(RTE_DIM(free), nb_free));
-	} else {
-		for (i = 1; i < VIRTIO_TX_FREE_NR; i++) {
-			m = (struct rte_mbuf *)vq->vq_descx[desc_idx++].cookie;
-			m = __rte_pktmbuf_prefree_seg(m);
-			if (m != NULL)
-				rte_mempool_put(m->pool, m);
-		}
-	}
-
-	vq->vq_used_cons_idx += VIRTIO_TX_FREE_NR;
-	vq->vq_free_cnt += (VIRTIO_TX_FREE_NR << 1);
-}
-
 uint16_t
 virtio_xmit_pkts_simple(void *tx_queue, struct rte_mbuf **tx_pkts,
 	uint16_t nb_pkts)
@@ -423,3 +163,13 @@ virtio_rxq_vec_setup(struct virtnet_rx *rxq)
 
 	return 0;
 }
+
+/* Stub for linkage when arch specific implementation is not available */
+uint16_t __attribute__((weak))
+virtio_recv_pkts_vec(void *rx_queue __rte_unused,
+		     struct rte_mbuf **rx_pkts __rte_unused,
+		     uint16_t nb_pkts __rte_unused)
+{
+	rte_panic("Wrong weak function linked by linker\n");
+	return 0;
+}