dp->next = VQ_RING_DESC_CHAIN_END;
}
-static void
-vq_ring_free_id_packed(struct virtqueue *vq, uint16_t id)
-{
- struct vq_desc_extra *dxp;
-
- dxp = &vq->vq_descx[id];
- vq->vq_free_cnt += dxp->ndescs;
-
- if (vq->vq_desc_tail_idx == VQ_RING_DESC_CHAIN_END)
- vq->vq_desc_head_idx = id;
- else
- vq->vq_descx[vq->vq_desc_tail_idx].next = id;
-
- vq->vq_desc_tail_idx = id;
- dxp->next = VQ_RING_DESC_CHAIN_END;
-}
-
void
virtio_update_packet_stats(struct virtnet_stats *stats, struct rte_mbuf *mbuf)
{
for (i = 0; i < num; i++) {
used_idx = vq->vq_used_cons_idx;
+ /* desc_is_used has a load-acquire or rte_cio_rmb inside
+ * and wait for used desc in virtqueue.
+ */
if (!desc_is_used(&desc[used_idx], vq))
return i;
- virtio_rmb(vq->hw->weak_barriers);
len[i] = desc[used_idx].len;
id = desc[used_idx].id;
cookie = (struct rte_mbuf *)vq->vq_descx[id].cookie;
return i;
}
-#ifndef DEFAULT_TX_FREE_THRESH
-#define DEFAULT_TX_FREE_THRESH 32
-#endif
-
-static void
-virtio_xmit_cleanup_inorder_packed(struct virtqueue *vq, int num)
-{
- uint16_t used_idx, id, curr_id, free_cnt = 0;
- uint16_t size = vq->vq_nentries;
- struct vring_packed_desc *desc = vq->vq_packed.ring.desc;
- struct vq_desc_extra *dxp;
-
- used_idx = vq->vq_used_cons_idx;
- while (num > 0 && desc_is_used(&desc[used_idx], vq)) {
- virtio_rmb(vq->hw->weak_barriers);
- id = desc[used_idx].id;
- do {
- curr_id = used_idx;
- dxp = &vq->vq_descx[used_idx];
- used_idx += dxp->ndescs;
- free_cnt += dxp->ndescs;
- num -= dxp->ndescs;
- if (used_idx >= size) {
- used_idx -= size;
- vq->vq_packed.used_wrap_counter ^= 1;
- }
- if (dxp->cookie != NULL) {
- rte_pktmbuf_free(dxp->cookie);
- dxp->cookie = NULL;
- }
- } while (curr_id != id);
- }
- vq->vq_used_cons_idx = used_idx;
- vq->vq_free_cnt += free_cnt;
-}
-
-static void
-virtio_xmit_cleanup_normal_packed(struct virtqueue *vq, int num)
-{
- uint16_t used_idx, id;
- uint16_t size = vq->vq_nentries;
- struct vring_packed_desc *desc = vq->vq_packed.ring.desc;
- struct vq_desc_extra *dxp;
-
- used_idx = vq->vq_used_cons_idx;
- while (num-- && desc_is_used(&desc[used_idx], vq)) {
- virtio_rmb(vq->hw->weak_barriers);
- id = desc[used_idx].id;
- dxp = &vq->vq_descx[id];
- vq->vq_used_cons_idx += dxp->ndescs;
- if (vq->vq_used_cons_idx >= size) {
- vq->vq_used_cons_idx -= size;
- vq->vq_packed.used_wrap_counter ^= 1;
- }
- vq_ring_free_id_packed(vq, id);
- if (dxp->cookie != NULL) {
- rte_pktmbuf_free(dxp->cookie);
- dxp->cookie = NULL;
- }
- used_idx = vq->vq_used_cons_idx;
- }
-}
-
-/* Cleanup from completed transmits. */
-static inline void
-virtio_xmit_cleanup_packed(struct virtqueue *vq, int num, int in_order)
-{
- if (in_order)
- virtio_xmit_cleanup_inorder_packed(vq, num);
- else
- virtio_xmit_cleanup_normal_packed(vq, num);
-}
-
-static void
-virtio_xmit_cleanup(struct virtqueue *vq, uint16_t num)
-{
- uint16_t i, used_idx, desc_idx;
- for (i = 0; i < num; i++) {
- struct vring_used_elem *uep;
- struct vq_desc_extra *dxp;
-
- used_idx = (uint16_t)(vq->vq_used_cons_idx & (vq->vq_nentries - 1));
- uep = &vq->vq_split.ring.used->ring[used_idx];
-
- desc_idx = (uint16_t) uep->id;
- dxp = &vq->vq_descx[desc_idx];
- vq->vq_used_cons_idx++;
- vq_ring_free_chain(vq, desc_idx);
-
- if (dxp->cookie != NULL) {
- rte_pktmbuf_free(dxp->cookie);
- dxp->cookie = NULL;
- }
- }
-}
-
-/* Cleanup from completed inorder transmits. */
-static __rte_always_inline void
-virtio_xmit_cleanup_inorder(struct virtqueue *vq, uint16_t num)
-{
- uint16_t i, idx = vq->vq_used_cons_idx;
- int16_t free_cnt = 0;
- struct vq_desc_extra *dxp = NULL;
-
- if (unlikely(num == 0))
- return;
-
- for (i = 0; i < num; i++) {
- dxp = &vq->vq_descx[idx++ & (vq->vq_nentries - 1)];
- free_cnt += dxp->ndescs;
- if (dxp->cookie != NULL) {
- rte_pktmbuf_free(dxp->cookie);
- dxp->cookie = NULL;
- }
- }
-
- vq->vq_free_cnt += free_cnt;
- vq->vq_used_cons_idx = idx;
-}
-
static inline int
virtqueue_enqueue_refill_inorder(struct virtqueue *vq,
struct rte_mbuf **cookies,
vq->vq_desc_head_idx = dxp->next;
if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END)
vq->vq_desc_tail_idx = vq->vq_desc_head_idx;
- virtio_wmb(hw->weak_barriers);
- start_dp[idx].flags = flags;
+
+ virtqueue_store_flags_packed(&start_dp[idx], flags,
+ hw->weak_barriers);
+
if (++vq->vq_avail_idx >= vq->vq_nentries) {
vq->vq_avail_idx -= vq->vq_nentries;
vq->vq_packed.cached_flags ^=
}
-/* avoid write operation when necessary, to lessen cache issues */
-#define ASSIGN_UNLESS_EQUAL(var, val) do { \
- if ((var) != (val)) \
- (var) = (val); \
-} while (0)
-
-#define virtqueue_clear_net_hdr(_hdr) do { \
- ASSIGN_UNLESS_EQUAL((_hdr)->csum_start, 0); \
- ASSIGN_UNLESS_EQUAL((_hdr)->csum_offset, 0); \
- ASSIGN_UNLESS_EQUAL((_hdr)->flags, 0); \
- ASSIGN_UNLESS_EQUAL((_hdr)->gso_type, 0); \
- ASSIGN_UNLESS_EQUAL((_hdr)->gso_size, 0); \
- ASSIGN_UNLESS_EQUAL((_hdr)->hdr_len, 0); \
-} while (0)
-
-static inline void
-virtqueue_xmit_offload(struct virtio_net_hdr *hdr,
- struct rte_mbuf *cookie,
- bool offload)
-{
- if (offload) {
- if (cookie->ol_flags & PKT_TX_TCP_SEG)
- cookie->ol_flags |= PKT_TX_TCP_CKSUM;
-
- switch (cookie->ol_flags & PKT_TX_L4_MASK) {
- case PKT_TX_UDP_CKSUM:
- hdr->csum_start = cookie->l2_len + cookie->l3_len;
- hdr->csum_offset = offsetof(struct rte_udp_hdr,
- dgram_cksum);
- hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
- break;
-
- case PKT_TX_TCP_CKSUM:
- hdr->csum_start = cookie->l2_len + cookie->l3_len;
- hdr->csum_offset = offsetof(struct rte_tcp_hdr, cksum);
- hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
- break;
-
- default:
- ASSIGN_UNLESS_EQUAL(hdr->csum_start, 0);
- ASSIGN_UNLESS_EQUAL(hdr->csum_offset, 0);
- ASSIGN_UNLESS_EQUAL(hdr->flags, 0);
- break;
- }
- /* TCP Segmentation Offload */
- if (cookie->ol_flags & PKT_TX_TCP_SEG) {
- hdr->gso_type = (cookie->ol_flags & PKT_TX_IPV6) ?
- VIRTIO_NET_HDR_GSO_TCPV6 :
- VIRTIO_NET_HDR_GSO_TCPV4;
- hdr->gso_size = cookie->tso_segsz;
- hdr->hdr_len =
- cookie->l2_len +
- cookie->l3_len +
- cookie->l4_len;
- } else {
- ASSIGN_UNLESS_EQUAL(hdr->gso_type, 0);
- ASSIGN_UNLESS_EQUAL(hdr->gso_size, 0);
- ASSIGN_UNLESS_EQUAL(hdr->hdr_len, 0);
- }
- }
-}
static inline void
virtqueue_enqueue_xmit_inorder(struct virtnet_tx *txvq,
struct vring_desc *start_dp;
struct virtio_net_hdr *hdr;
uint16_t idx;
- uint16_t head_size = vq->hw->vtnet_hdr_size;
+ int16_t head_size = vq->hw->vtnet_hdr_size;
uint16_t i = 0;
idx = vq->vq_desc_head_idx;
dxp->ndescs = 1;
virtio_update_packet_stats(&txvq->stats, cookies[i]);
- hdr = (struct virtio_net_hdr *)(char *)cookies[i]->buf_addr +
- cookies[i]->data_off - head_size;
+ hdr = rte_pktmbuf_mtod_offset(cookies[i],
+ struct virtio_net_hdr *, -head_size);
/* if offload disabled, hdr is not zeroed yet, do it now */
if (!vq->hw->has_tx_offload)
else
virtqueue_xmit_offload(hdr, cookies[i], true);
- start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookies[i], vq);
+ start_dp[idx].addr =
+ VIRTIO_MBUF_DATA_DMA_ADDR(cookies[i], vq) - head_size;
start_dp[idx].len = cookies[i]->data_len + head_size;
start_dp[idx].flags = 0;
struct vring_packed_desc *dp;
struct vq_desc_extra *dxp;
uint16_t idx, id, flags;
- uint16_t head_size = vq->hw->vtnet_hdr_size;
+ int16_t head_size = vq->hw->vtnet_hdr_size;
struct virtio_net_hdr *hdr;
id = in_order ? vq->vq_avail_idx : vq->vq_desc_head_idx;
flags = vq->vq_packed.cached_flags;
/* prepend cannot fail, checked by caller */
- hdr = (struct virtio_net_hdr *)(char *)cookie->buf_addr +
- cookie->data_off - head_size;
+ hdr = rte_pktmbuf_mtod_offset(cookie, struct virtio_net_hdr *,
+ -head_size);
/* if offload disabled, hdr is not zeroed yet, do it now */
if (!vq->hw->has_tx_offload)
else
virtqueue_xmit_offload(hdr, cookie, true);
- dp->addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq);
+ dp->addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq) - head_size;
dp->len = cookie->data_len + head_size;
dp->id = id;
vq->vq_desc_tail_idx = VQ_RING_DESC_CHAIN_END;
}
- virtio_wmb(vq->hw->weak_barriers);
- dp->flags = flags;
-}
-
-static inline void
-virtqueue_enqueue_xmit_packed(struct virtnet_tx *txvq, struct rte_mbuf *cookie,
- uint16_t needed, int can_push, int in_order)
-{
- struct virtio_tx_region *txr = txvq->virtio_net_hdr_mz->addr;
- struct vq_desc_extra *dxp;
- struct virtqueue *vq = txvq->vq;
- struct vring_packed_desc *start_dp, *head_dp;
- uint16_t idx, id, head_idx, head_flags;
- uint16_t head_size = vq->hw->vtnet_hdr_size;
- struct virtio_net_hdr *hdr;
- uint16_t prev;
- bool prepend_header = false;
-
- id = in_order ? vq->vq_avail_idx : vq->vq_desc_head_idx;
-
- dxp = &vq->vq_descx[id];
- dxp->ndescs = needed;
- dxp->cookie = cookie;
-
- head_idx = vq->vq_avail_idx;
- idx = head_idx;
- prev = head_idx;
- start_dp = vq->vq_packed.ring.desc;
-
- head_dp = &vq->vq_packed.ring.desc[idx];
- head_flags = cookie->next ? VRING_DESC_F_NEXT : 0;
- head_flags |= vq->vq_packed.cached_flags;
-
- if (can_push) {
- /* prepend cannot fail, checked by caller */
- hdr = (struct virtio_net_hdr *)(char *)cookie->buf_addr +
- cookie->data_off - head_size;
- prepend_header = true;
-
- /* if offload disabled, it is not zeroed below, do it now */
- if (!vq->hw->has_tx_offload)
- virtqueue_clear_net_hdr(hdr);
- } else {
- /* setup first tx ring slot to point to header
- * stored in reserved region.
- */
- start_dp[idx].addr = txvq->virtio_net_hdr_mem +
- RTE_PTR_DIFF(&txr[idx].tx_hdr, txr);
- start_dp[idx].len = vq->hw->vtnet_hdr_size;
- hdr = (struct virtio_net_hdr *)&txr[idx].tx_hdr;
- idx++;
- if (idx >= vq->vq_nentries) {
- idx -= vq->vq_nentries;
- vq->vq_packed.cached_flags ^=
- VRING_PACKED_DESC_F_AVAIL_USED;
- }
- }
-
- virtqueue_xmit_offload(hdr, cookie, vq->hw->has_tx_offload);
-
- do {
- uint16_t flags;
-
- start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq);
- start_dp[idx].len = cookie->data_len;
- if (prepend_header) {
- start_dp[idx].len += head_size;
- prepend_header = false;
- }
-
- if (likely(idx != head_idx)) {
- flags = cookie->next ? VRING_DESC_F_NEXT : 0;
- flags |= vq->vq_packed.cached_flags;
- start_dp[idx].flags = flags;
- }
- prev = idx;
- idx++;
- if (idx >= vq->vq_nentries) {
- idx -= vq->vq_nentries;
- vq->vq_packed.cached_flags ^=
- VRING_PACKED_DESC_F_AVAIL_USED;
- }
- } while ((cookie = cookie->next) != NULL);
-
- start_dp[prev].id = id;
-
- vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - needed);
- vq->vq_avail_idx = idx;
-
- if (!in_order) {
- vq->vq_desc_head_idx = dxp->next;
- if (vq->vq_desc_head_idx == VQ_RING_DESC_CHAIN_END)
- vq->vq_desc_tail_idx = VQ_RING_DESC_CHAIN_END;
- }
-
- virtio_wmb(vq->hw->weak_barriers);
- head_dp->flags = head_flags;
+ virtqueue_store_flags_packed(dp, flags, vq->hw->weak_barriers);
}
static inline void
struct vring_desc *start_dp;
uint16_t seg_num = cookie->nb_segs;
uint16_t head_idx, idx;
- uint16_t head_size = vq->hw->vtnet_hdr_size;
+ int16_t head_size = vq->hw->vtnet_hdr_size;
bool prepend_header = false;
struct virtio_net_hdr *hdr;
if (can_push) {
/* prepend cannot fail, checked by caller */
- hdr = (struct virtio_net_hdr *)(char *)cookie->buf_addr +
- cookie->data_off - head_size;
+ hdr = rte_pktmbuf_mtod_offset(cookie, struct virtio_net_hdr *,
+ -head_size);
prepend_header = true;
/* if offload disabled, it is not zeroed below, do it now */
start_dp[idx].addr = VIRTIO_MBUF_DATA_DMA_ADDR(cookie, vq);
start_dp[idx].len = cookie->data_len;
if (prepend_header) {
+ start_dp[idx].addr -= head_size;
start_dp[idx].len += head_size;
prepend_header = false;
}
uint16_t queue_idx,
uint16_t nb_desc,
unsigned int socket_id __rte_unused,
- const struct rte_eth_rxconf *rx_conf __rte_unused,
+ const struct rte_eth_rxconf *rx_conf,
struct rte_mempool *mp)
{
uint16_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_RQ_QUEUE_IDX;
struct virtio_hw *hw = dev->data->dev_private;
struct virtqueue *vq = hw->vqs[vtpci_queue_idx];
struct virtnet_rx *rxvq;
+ uint16_t rx_free_thresh;
PMD_INIT_FUNC_TRACE();
+ if (rx_conf->rx_deferred_start) {
+ PMD_INIT_LOG(ERR, "Rx deferred start is not supported");
+ return -EINVAL;
+ }
+
+ rx_free_thresh = rx_conf->rx_free_thresh;
+ if (rx_free_thresh == 0)
+ rx_free_thresh =
+ RTE_MIN(vq->vq_nentries / 4, DEFAULT_RX_FREE_THRESH);
+
+ if (rx_free_thresh & 0x3) {
+ RTE_LOG(ERR, PMD, "rx_free_thresh must be multiples of four."
+ " (rx_free_thresh=%u port=%u queue=%u)\n",
+ rx_free_thresh, dev->data->port_id, queue_idx);
+ return -EINVAL;
+ }
+
+ if (rx_free_thresh >= vq->vq_nentries) {
+ RTE_LOG(ERR, PMD, "rx_free_thresh must be less than the "
+ "number of RX entries (%u)."
+ " (rx_free_thresh=%u port=%u queue=%u)\n",
+ vq->vq_nentries,
+ rx_free_thresh, dev->data->port_id, queue_idx);
+ return -EINVAL;
+ }
+ vq->vq_free_thresh = rx_free_thresh;
+
if (nb_desc == 0 || nb_desc > vq->vq_nentries)
nb_desc = vq->vq_nentries;
vq->vq_free_cnt = RTE_MIN(vq->vq_free_cnt, nb_desc);
struct rte_mbuf *m;
uint16_t desc_idx;
int error, nbufs, i;
+ bool in_order = vtpci_with_feature(hw, VIRTIO_F_IN_ORDER);
PMD_INIT_FUNC_TRACE();
/* Allocate blank mbufs for the each rx descriptor */
nbufs = 0;
- if (hw->use_simple_rx) {
+ if (hw->use_vec_rx && !vtpci_packed_queue(hw)) {
for (desc_idx = 0; desc_idx < vq->vq_nentries;
desc_idx++) {
vq->vq_split.ring.avail->ring[desc_idx] = desc_idx;
&rxvq->fake_mbuf;
}
- if (hw->use_simple_rx) {
+ if (hw->use_vec_rx && !vtpci_packed_queue(hw)) {
while (vq->vq_free_cnt >= RTE_VIRTIO_VPMD_RX_REARM_THRESH) {
virtio_rxq_rearm_vec(rxvq);
nbufs += RTE_VIRTIO_VPMD_RX_REARM_THRESH;
}
- } else if (hw->use_inorder_rx) {
+ } else if (!vtpci_packed_queue(vq->hw) && in_order) {
if ((!virtqueue_full(vq))) {
uint16_t free_cnt = vq->vq_free_cnt;
struct rte_mbuf *pkts[free_cnt];
PMD_INIT_FUNC_TRACE();
+ if (tx_conf->tx_deferred_start) {
+ PMD_INIT_LOG(ERR, "Tx deferred start is not supported");
+ return -EINVAL;
+ }
+
if (nb_desc == 0 || nb_desc > vq->vq_nentries)
nb_desc = vq->vq_nentries;
vq->vq_free_cnt = RTE_MIN(vq->vq_free_cnt, nb_desc);
RTE_MIN(vq->vq_nentries / 4, DEFAULT_TX_FREE_THRESH);
if (tx_free_thresh >= (vq->vq_nentries - 3)) {
- RTE_LOG(ERR, PMD, "tx_free_thresh must be less than the "
+ PMD_DRV_LOG(ERR, "tx_free_thresh must be less than the "
"number of TX entries minus 3 (%u)."
" (tx_free_thresh=%u port=%u queue=%u)\n",
vq->vq_nentries - 3,
PMD_INIT_FUNC_TRACE();
if (!vtpci_packed_queue(hw)) {
- if (hw->use_inorder_tx)
+ if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER))
vq->vq_split.ring.desc[vq->vq_nentries - 1].next = 0;
}
error = virtqueue_enqueue_recv_refill(vq, &m, 1);
if (unlikely(error)) {
- RTE_LOG(ERR, PMD, "cannot requeue discarded mbuf");
+ PMD_DRV_LOG(ERR, "cannot requeue discarded mbuf");
rte_pktmbuf_free(m);
}
}
error = virtqueue_enqueue_refill_inorder(vq, &m, 1);
if (unlikely(error)) {
- RTE_LOG(ERR, PMD, "cannot requeue discarded mbuf");
+ PMD_DRV_LOG(ERR, "cannot requeue discarded mbuf");
rte_pktmbuf_free(m);
}
}
return 0;
}
-#define VIRTIO_MBUF_BURST_SZ 64
#define DESC_PER_CACHELINE (RTE_CACHE_LINE_SIZE / sizeof(struct vring_desc))
uint16_t
virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
struct virtio_hw *hw = vq->hw;
uint16_t hdr_size = hw->vtnet_hdr_size;
uint16_t nb_tx = 0;
- bool in_order = hw->use_inorder_tx;
+ bool in_order = vtpci_with_feature(hw, VIRTIO_F_IN_ORDER);
if (unlikely(hw->started == 0 && tx_pkts != hw->inject_pkts))
return nb_tx;
return nb_tx;
}
+
+#ifndef CC_AVX512_SUPPORT
+uint16_t
+virtio_recv_pkts_packed_vec(void *rx_queue __rte_unused,
+ struct rte_mbuf **rx_pkts __rte_unused,
+ uint16_t nb_pkts __rte_unused)
+{
+ return 0;
+}
+#endif /* ifndef CC_AVX512_SUPPORT */
git.droids-corp.org / dpdk.git / blobdiff