X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fnet%2Fvirtio%2Fvirtio_ethdev.c;h=d25c08f0a2d534b663ab905e3dc64a7b4ca16eb6;hb=4e968cacb873d8497e95075b749295297745f92d;hp=d0c65e3752f383166a81bf99c779695363dadb0a;hpb=ec194c2f189525b2fb4be5604422a28ea5f08acd;p=dpdk.git

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index d0c65e3752..d25c08f0a2 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -71,7 +71,6 @@ static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
 static int virtio_mac_addr_set(struct rte_eth_dev *dev,
 				struct ether_addr *mac_addr);
 
-static int virtio_intr_enable(struct rte_eth_dev *dev);
 static int virtio_intr_disable(struct rte_eth_dev *dev);
 
 static int virtio_dev_queue_stats_mapping_set(
@@ -142,16 +141,17 @@ static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
 
 static struct virtio_pmd_ctrl *
-virtio_pq_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
-		       int *dlen, int pkt_num)
+virtio_send_command_packed(struct virtnet_ctl *cvq,
+			   struct virtio_pmd_ctrl *ctrl,
+			   int *dlen, int pkt_num)
 {
 	struct virtqueue *vq = cvq->vq;
 	int head;
-	struct vring_packed_desc *desc = vq->ring_packed.desc_packed;
+	struct vring_packed_desc *desc = vq->vq_packed.ring.desc;
 	struct virtio_pmd_ctrl *result;
-	int wrap_counter;
 	uint16_t flags;
 	int sum = 0;
+	int nb_descs = 0;
 	int k;
 
 	/*
@@ -161,14 +161,14 @@ virtio_pq_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
 	 * One RX packet for ACK.
 	 */
 	head = vq->vq_avail_idx;
-	wrap_counter = vq->avail_wrap_counter;
-	desc[head].flags = VRING_DESC_F_NEXT;
+	flags = vq->vq_packed.cached_flags;
 	desc[head].addr = cvq->virtio_net_hdr_mem;
 	desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
 	vq->vq_free_cnt--;
+	nb_descs++;
 	if (++vq->vq_avail_idx >= vq->vq_nentries) {
 		vq->vq_avail_idx -= vq->vq_nentries;
-		vq->avail_wrap_counter ^= 1;
+		vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
 	}
 
 	for (k = 0; k < pkt_num; k++) {
@@ -176,129 +176,107 @@ virtio_pq_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
 			+ sizeof(struct virtio_net_ctrl_hdr)
 			+ sizeof(ctrl->status) + sizeof(uint8_t) * sum;
 		desc[vq->vq_avail_idx].len = dlen[k];
-		flags = VRING_DESC_F_NEXT;
+		desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT |
+			vq->vq_packed.cached_flags;
 		sum += dlen[k];
 		vq->vq_free_cnt--;
-		flags |= VRING_DESC_F_AVAIL(vq->avail_wrap_counter) |
-			 VRING_DESC_F_USED(!vq->avail_wrap_counter);
-		desc[vq->vq_avail_idx].flags = flags;
-		rte_smp_wmb();
-		vq->vq_free_cnt--;
+		nb_descs++;
 		if (++vq->vq_avail_idx >= vq->vq_nentries) {
 			vq->vq_avail_idx -= vq->vq_nentries;
-			vq->avail_wrap_counter ^= 1;
+			vq->vq_packed.cached_flags ^=
+				VRING_PACKED_DESC_F_AVAIL_USED;
 		}
 	}
 
-
 	desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
 		+ sizeof(struct virtio_net_ctrl_hdr);
 	desc[vq->vq_avail_idx].len = sizeof(ctrl->status);
-	flags = VRING_DESC_F_WRITE;
-	flags |= VRING_DESC_F_AVAIL(vq->avail_wrap_counter) |
-		 VRING_DESC_F_USED(!vq->avail_wrap_counter);
-	desc[vq->vq_avail_idx].flags = flags;
-	flags = VRING_DESC_F_NEXT;
-	flags |= VRING_DESC_F_AVAIL(wrap_counter) |
-		 VRING_DESC_F_USED(!wrap_counter);
-	desc[head].flags = flags;
-	rte_smp_wmb();
-
+	desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE |
+		vq->vq_packed.cached_flags;
 	vq->vq_free_cnt--;
+	nb_descs++;
 	if (++vq->vq_avail_idx >= vq->vq_nentries) {
 		vq->vq_avail_idx -= vq->vq_nentries;
-		vq->avail_wrap_counter ^= 1;
+		vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
 	}
 
+	virtio_wmb(vq->hw->weak_barriers);
+	desc[head].flags = VRING_DESC_F_NEXT | flags;
+
+	virtio_wmb(vq->hw->weak_barriers);
 	virtqueue_notify(vq);
 
 	/* wait for used descriptors in virtqueue */
-	do {
-		rte_rmb();
+	while (!desc_is_used(&desc[head], vq))
 		usleep(100);
-	} while (!desc_is_used(&desc[head], vq));
+
+	virtio_rmb(vq->hw->weak_barriers);
 
 	/* now get used descriptors */
-	while (desc_is_used(&desc[vq->vq_used_cons_idx], vq)) {
-		vq->vq_free_cnt++;
-		if (++vq->vq_used_cons_idx >= vq->vq_nentries) {
-			vq->vq_used_cons_idx -= vq->vq_nentries;
-			vq->used_wrap_counter ^= 1;
-		}
-	}
+	vq->vq_free_cnt += nb_descs;
+	vq->vq_used_cons_idx += nb_descs;
+	if (vq->vq_used_cons_idx >= vq->vq_nentries) {
+		vq->vq_used_cons_idx -= vq->vq_nentries;
+		vq->vq_packed.used_wrap_counter ^= 1;
+	}
+
+	PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n"
+			"vq->vq_avail_idx=%d\n"
+			"vq->vq_used_cons_idx=%d\n"
+			"vq->vq_packed.cached_flags=0x%x\n"
+			"vq->vq_packed.used_wrap_counter=%d\n",
+			vq->vq_free_cnt,
+			vq->vq_avail_idx,
+			vq->vq_used_cons_idx,
+			vq->vq_packed.cached_flags,
+			vq->vq_packed.used_wrap_counter);
 
 	result = cvq->virtio_net_hdr_mz->addr;
 	return result;
 }
 
-static int
-virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
-		int *dlen, int pkt_num)
+static struct virtio_pmd_ctrl *
+virtio_send_command_split(struct virtnet_ctl *cvq,
+			  struct virtio_pmd_ctrl *ctrl,
+			  int *dlen, int pkt_num)
 {
+	struct virtio_pmd_ctrl *result;
+	struct virtqueue *vq = cvq->vq;
 	uint32_t head, i;
 	int k, sum = 0;
-	virtio_net_ctrl_ack status = ~0;
-	struct virtio_pmd_ctrl *result;
-	struct virtqueue *vq;
 
-	ctrl->status = status;
-
-	if (!cvq || !cvq->vq) {
-		PMD_INIT_LOG(ERR, "Control queue is not supported.");
-		return -1;
-	}
-
-	rte_spinlock_lock(&cvq->lock);
-	vq = cvq->vq;
 	head = vq->vq_desc_head_idx;
 
-	PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
-		"vq->hw->cvq = %p vq = %p",
-		vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
-
-	if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
-		rte_spinlock_unlock(&cvq->lock);
-		return -1;
-	}
-
-	memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
-		sizeof(struct virtio_pmd_ctrl));
-
-	if (vtpci_packed_queue(vq->hw)) {
-		result = virtio_pq_send_command(cvq, ctrl, dlen, pkt_num);
-		goto out_unlock;
-	}
-
 	/*
 	 * Format is enforced in qemu code:
 	 * One TX packet for header;
 	 * At least one TX packet per argument;
 	 * One RX packet for ACK.
 	 */
-	vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
-	vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
-	vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
+	vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT;
+	vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem;
+	vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
 	vq->vq_free_cnt--;
-	i = vq->vq_ring.desc[head].next;
+	i = vq->vq_split.ring.desc[head].next;
 
 	for (k = 0; k < pkt_num; k++) {
-		vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
-		vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
+		vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT;
+		vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
 			+ sizeof(struct virtio_net_ctrl_hdr)
 			+ sizeof(ctrl->status) + sizeof(uint8_t)*sum;
-		vq->vq_ring.desc[i].len = dlen[k];
+		vq->vq_split.ring.desc[i].len = dlen[k];
 		sum += dlen[k];
 		vq->vq_free_cnt--;
-		i = vq->vq_ring.desc[i].next;
+		i = vq->vq_split.ring.desc[i].next;
 	}
 
-	vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
-	vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
+	vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE;
+	vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
 			+ sizeof(struct virtio_net_ctrl_hdr);
-	vq->vq_ring.desc[i].len = sizeof(ctrl->status);
+	vq->vq_split.ring.desc[i].len = sizeof(ctrl->status);
 	vq->vq_free_cnt--;
 
-	vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
+	vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next;
 
 	vq_update_avail_ring(vq, head);
 	vq_update_avail_idx(vq);
@@ -319,16 +297,17 @@ virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
 
 		used_idx = (uint32_t)(vq->vq_used_cons_idx
 				& (vq->vq_nentries - 1));
-		uep = &vq->vq_ring.used->ring[used_idx];
+		uep = &vq->vq_split.ring.used->ring[used_idx];
 		idx = (uint32_t) uep->id;
 		desc_idx = idx;
 
-		while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
-			desc_idx = vq->vq_ring.desc[desc_idx].next;
+		while (vq->vq_split.ring.desc[desc_idx].flags &
+				VRING_DESC_F_NEXT) {
+			desc_idx = vq->vq_split.ring.desc[desc_idx].next;
 			vq->vq_free_cnt++;
 		}
 
-		vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
+		vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx;
 		vq->vq_desc_head_idx = idx;
 
 		vq->vq_used_cons_idx++;
@@ -339,8 +318,44 @@ virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
 			vq->vq_free_cnt, vq->vq_desc_head_idx);
 
 	result = cvq->virtio_net_hdr_mz->addr;
+	return result;
+}
+
+static int
+virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
+		    int *dlen, int pkt_num)
+{
+	virtio_net_ctrl_ack status = ~0;
+	struct virtio_pmd_ctrl *result;
+	struct virtqueue *vq;
+
+	ctrl->status = status;
+
+	if (!cvq || !cvq->vq) {
+		PMD_INIT_LOG(ERR, "Control queue is not supported.");
+		return -1;
+	}
+
+	rte_spinlock_lock(&cvq->lock);
+	vq = cvq->vq;
+
+	PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
+		"vq->hw->cvq = %p vq = %p",
+		vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
+
+	if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
+		rte_spinlock_unlock(&cvq->lock);
+		return -1;
+	}
+
+	memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
+		sizeof(struct virtio_pmd_ctrl));
+
+	if (vtpci_packed_queue(vq->hw))
+		result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num);
+	else
+		result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num);
 
-out_unlock:
 	rte_spinlock_unlock(&cvq->lock);
 	return result->status;
 }
@@ -390,7 +405,6 @@ static void
 virtio_init_vring(struct virtqueue *vq)
 {
 	int size = vq->vq_nentries;
-	struct vring *vr = &vq->vq_ring;
 	uint8_t *ring_mem = vq->vq_ring_virt_mem;
 
 	PMD_INIT_FUNC_TRACE();
@@ -404,10 +418,12 @@ virtio_init_vring(struct virtqueue *vq)
 	vq->vq_free_cnt = vq->vq_nentries;
 	memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
 	if (vtpci_packed_queue(vq->hw)) {
-		vring_init_packed(&vq->ring_packed, ring_mem,
+		vring_init_packed(&vq->vq_packed.ring, ring_mem,
 				  VIRTIO_PCI_VRING_ALIGN, size);
 		vring_desc_init_packed(vq, size);
 	} else {
+		struct vring *vr = &vq->vq_split.ring;
+
 		vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size);
 		vring_desc_init_split(vr->desc, size);
 	}
@@ -482,13 +498,12 @@ virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
 	vq->hw = hw;
 	vq->vq_queue_index = vtpci_queue_idx;
 	vq->vq_nentries = vq_size;
-	vq->event_flags_shadow = 0;
 	if (vtpci_packed_queue(hw)) {
-		vq->avail_wrap_counter = 1;
-		vq->used_wrap_counter = 1;
-		vq->avail_used_flags =
-			VRING_DESC_F_AVAIL(vq->avail_wrap_counter) |
-			VRING_DESC_F_USED(!vq->avail_wrap_counter);
+		vq->vq_packed.used_wrap_counter = 1;
+		vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL;
+		vq->vq_packed.event_flags_shadow = 0;
+		if (queue_type == VTNET_RQ)
+			vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE;
 	}
 
 	/*
@@ -596,17 +611,9 @@ virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
 		memset(txr, 0, vq_size * sizeof(*txr));
 		for (i = 0; i < vq_size; i++) {
 			struct vring_desc *start_dp = txr[i].tx_indir;
-			struct vring_packed_desc *start_dp_packed =
-				txr[i].tx_indir_pq;
 
 			/* first indirect descriptor is always the tx header */
-			if (vtpci_packed_queue(hw)) {
-				start_dp_packed->addr = txvq->virtio_net_hdr_mem
-					+ i * sizeof(*txr)
-					+ offsetof(struct virtio_tx_region,
-						   tx_hdr);
-				start_dp_packed->len = hw->vtnet_hdr_size;
-			} else {
+			if (!vtpci_packed_queue(hw)) {
 				vring_desc_init_split(start_dp,
 						      RTE_DIM(txr[i].tx_indir));
 				start_dp->addr = txvq->virtio_net_hdr_mem
@@ -843,10 +850,12 @@ virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 static int
 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
 {
+	struct virtio_hw *hw = dev->data->dev_private;
 	struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
 	struct virtqueue *vq = rxvq->vq;
 
 	virtqueue_enable_intr(vq);
+	virtio_mb(hw->weak_barriers);
 	return 0;
 }
 
@@ -896,6 +905,21 @@ static const struct eth_dev_ops virtio_eth_dev_ops = {
 	.mac_addr_set            = virtio_mac_addr_set,
 };
 
+/*
+ * dev_ops for virtio-user in secondary processes, as we just have
+ * some limited supports currently.
+ */
+const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = {
+	.dev_infos_get           = virtio_dev_info_get,
+	.stats_get               = virtio_dev_stats_get,
+	.xstats_get              = virtio_dev_xstats_get,
+	.xstats_get_names        = virtio_dev_xstats_get_names,
+	.stats_reset             = virtio_dev_stats_reset,
+	.xstats_reset            = virtio_dev_stats_reset,
+	/* collect stats per queue */
+	.queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
+};
+
 static void
 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 {
@@ -1446,7 +1470,8 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev)
 
 	if (vtpci_packed_queue(hw)) {
 		PMD_INIT_LOG(INFO,
-			"virtio: using packed ring standard Tx path on port %u",
+			"virtio: using packed ring %s Tx path on port %u",
+			hw->use_inorder_tx ? "inorder" : "standard",
 			eth_dev->data->port_id);
 		eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
 	} else {
@@ -1481,10 +1506,9 @@ set_rxtx_funcs(struct rte_eth_dev *eth_dev)
 			eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
 		} else if (hw->use_inorder_rx) {
 			PMD_INIT_LOG(INFO,
-				"virtio: using inorder mergeable buffer Rx path on port %u",
+				"virtio: using inorder Rx path on port %u",
 				eth_dev->data->port_id);
-			eth_dev->rx_pkt_burst =
-				&virtio_recv_mergeable_pkts_inorder;
+			eth_dev->rx_pkt_burst =	&virtio_recv_pkts_inorder;
 		} else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
 			PMD_INIT_LOG(INFO,
 				"virtio: using mergeable buffer Rx path on port %u",
@@ -1614,6 +1638,8 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
 	if (virtio_negotiate_features(hw, req_features) < 0)
 		return -1;
 
+	hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM);
+
 	if (!hw->virtio_user_dev) {
 		pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
 		rte_eth_copy_pci_info(eth_dev, pci_dev);
@@ -1836,6 +1862,7 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
 
 out:
 	rte_free(eth_dev->data->mac_addrs);
+	eth_dev->data->mac_addrs = NULL;
 	return ret;
 }
 
@@ -1963,6 +1990,8 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 	const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
 	const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
 	struct virtio_hw *hw = dev->data->dev_private;
+	uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
+		hw->vtnet_hdr_size;
 	uint64_t rx_offloads = rxmode->offloads;
 	uint64_t tx_offloads = txmode->offloads;
 	uint64_t req_features;
@@ -1977,6 +2006,9 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 			return ret;
 	}
 
+	if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
+		req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
+
 	if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
 			   DEV_RX_OFFLOAD_TCP_CKSUM))
 		req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
@@ -2049,19 +2081,13 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 
 	if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
 		hw->use_inorder_tx = 1;
-		if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) &&
-		    !vtpci_packed_queue(hw)) {
-			hw->use_inorder_rx = 1;
-			hw->use_simple_rx = 0;
-		} else {
-			hw->use_inorder_rx = 0;
-		}
+		hw->use_inorder_rx = 1;
+		hw->use_simple_rx = 0;
 	}
 
 	if (vtpci_packed_queue(hw)) {
 		hw->use_simple_rx = 0;
 		hw->use_inorder_rx = 0;
-		hw->use_inorder_tx = 0;
 	}
 
 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
@@ -2335,6 +2361,7 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 
 	host_features = VTPCI_OPS(hw)->get_features(hw);
 	dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
+	dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
 	if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
 		dev_info->rx_offload_capa |=
 			DEV_RX_OFFLOAD_TCP_CKSUM |