Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 904 insertions, 0 deletions

diff --git a/src/seastar/dpdk/drivers/net/netvsc/hn_ethdev.c b/src/seastar/dpdk/drivers/net/netvsc/hn_ethdev.c
new file mode 100644
index 000000000..553cb06f6
--- /dev/null
+++ b/src/seastar/dpdk/drivers/net/netvsc/hn_ethdev.c
@@ -0,0 +1,904 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2016-2018 Microsoft Corporation
+ * Copyright(c) 2013-2016 Brocade Communications Systems, Inc.
+ * All rights reserved.
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include <rte_ethdev.h>
+#include <rte_memcpy.h>
+#include <rte_string_fns.h>
+#include <rte_memzone.h>
+#include <rte_devargs.h>
+#include <rte_malloc.h>
+#include <rte_kvargs.h>
+#include <rte_atomic.h>
+#include <rte_branch_prediction.h>
+#include <rte_ether.h>
+#include <rte_ethdev_driver.h>
+#include <rte_cycles.h>
+#include <rte_errno.h>
+#include <rte_memory.h>
+#include <rte_eal.h>
+#include <rte_dev.h>
+#include <rte_bus_vmbus.h>
+
+#include "hn_logs.h"
+#include "hn_var.h"
+#include "hn_rndis.h"
+#include "hn_nvs.h"
+#include "ndis.h"
+
+#define HN_TX_OFFLOAD_CAPS (DEV_TX_OFFLOAD_IPV4_CKSUM | \
+			    DEV_TX_OFFLOAD_TCP_CKSUM  | \
+			    DEV_TX_OFFLOAD_UDP_CKSUM  | \
+			    DEV_TX_OFFLOAD_TCP_TSO    | \
+			    DEV_TX_OFFLOAD_MULTI_SEGS | \
+			    DEV_TX_OFFLOAD_VLAN_INSERT)
+
+#define HN_RX_OFFLOAD_CAPS (DEV_RX_OFFLOAD_CHECKSUM | \
+			    DEV_RX_OFFLOAD_VLAN_STRIP)
+
+int hn_logtype_init;
+int hn_logtype_driver;
+
+struct hn_xstats_name_off {
+	char name[RTE_ETH_XSTATS_NAME_SIZE];
+	unsigned int offset;
+};
+
+static const struct hn_xstats_name_off hn_stat_strings[] = {
+	{ "good_packets",           offsetof(struct hn_stats, packets) },
+	{ "good_bytes",             offsetof(struct hn_stats, bytes) },
+	{ "errors",                 offsetof(struct hn_stats, errors) },
+	{ "ring full",              offsetof(struct hn_stats, ring_full) },
+	{ "multicast_packets",      offsetof(struct hn_stats, multicast) },
+	{ "broadcast_packets",      offsetof(struct hn_stats, broadcast) },
+	{ "undersize_packets",      offsetof(struct hn_stats, size_bins[0]) },
+	{ "size_64_packets",        offsetof(struct hn_stats, size_bins[1]) },
+	{ "size_65_127_packets",    offsetof(struct hn_stats, size_bins[2]) },
+	{ "size_128_255_packets",   offsetof(struct hn_stats, size_bins[3]) },
+	{ "size_256_511_packets",   offsetof(struct hn_stats, size_bins[4]) },
+	{ "size_512_1023_packets",  offsetof(struct hn_stats, size_bins[5]) },
+	{ "size_1024_1518_packets", offsetof(struct hn_stats, size_bins[6]) },
+	{ "size_1519_max_packets",  offsetof(struct hn_stats, size_bins[7]) },
+};
+
+static struct rte_eth_dev *
+eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
+{
+	struct rte_eth_dev *eth_dev;
+	const char *name;
+
+	if (!dev)
+		return NULL;
+
+	name = dev->device.name;
+
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+		eth_dev = rte_eth_dev_allocate(name);
+		if (!eth_dev) {
+			PMD_DRV_LOG(NOTICE, "can not allocate rte ethdev");
+			return NULL;
+		}
+
+		if (private_data_size) {
+			eth_dev->data->dev_private =
+				rte_zmalloc_socket(name, private_data_size,
+						     RTE_CACHE_LINE_SIZE, dev->device.numa_node);
+			if (!eth_dev->data->dev_private) {
+				PMD_DRV_LOG(NOTICE, "can not allocate driver data");
+				rte_eth_dev_release_port(eth_dev);
+				return NULL;
+			}
+		}
+	} else {
+		eth_dev = rte_eth_dev_attach_secondary(name);
+		if (!eth_dev) {
+			PMD_DRV_LOG(NOTICE, "can not attach secondary");
+			return NULL;
+		}
+	}
+
+	eth_dev->device = &dev->device;
+
+	/* interrupt is simulated */
+	dev->intr_handle.type = RTE_INTR_HANDLE_EXT;
+	eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
+	eth_dev->intr_handle = &dev->intr_handle;
+
+	/* allow ethdev to remove on close */
+	eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE;
+
+	return eth_dev;
+}
+
+static void
+eth_dev_vmbus_release(struct rte_eth_dev *eth_dev)
+{
+	/* mac_addrs must not be freed alone because part of dev_private */
+	eth_dev->data->mac_addrs = NULL;
+	/* free ether device */
+	rte_eth_dev_release_port(eth_dev);
+
+	eth_dev->device = NULL;
+	eth_dev->intr_handle = NULL;
+}
+
+/* handle "latency=X" from devargs */
+static int hn_set_latency(const char *key, const char *value, void *opaque)
+{
+	struct hn_data *hv = opaque;
+	char *endp = NULL;
+	unsigned long lat;
+
+	errno = 0;
+	lat = strtoul(value, &endp, 0);
+
+	if (*value == '\0' || *endp != '\0') {
+		PMD_DRV_LOG(ERR, "invalid parameter %s=%s", key, value);
+		return -EINVAL;
+	}
+
+	PMD_DRV_LOG(DEBUG, "set latency %lu usec", lat);
+
+	hv->latency = lat * 1000;	/* usec to nsec */
+	return 0;
+}
+
+/* Parse device arguments */
+static int hn_parse_args(const struct rte_eth_dev *dev)
+{
+	struct hn_data *hv = dev->data->dev_private;
+	struct rte_devargs *devargs = dev->device->devargs;
+	static const char * const valid_keys[] = {
+		"latency",
+		NULL
+	};
+	struct rte_kvargs *kvlist;
+	int ret;
+
+	if (!devargs)
+		return 0;
+
+	PMD_INIT_LOG(DEBUG, "device args %s %s",
+		     devargs->name, devargs->args);
+
+	kvlist = rte_kvargs_parse(devargs->args, valid_keys);
+	if (!kvlist) {
+		PMD_DRV_LOG(NOTICE, "invalid parameters");
+		return -EINVAL;
+	}
+
+	ret = rte_kvargs_process(kvlist, "latency", hn_set_latency, hv);
+	if (ret)
+		PMD_DRV_LOG(ERR, "Unable to process latency arg\n");
+
+	rte_kvargs_free(kvlist);
+	return ret;
+}
+
+/* Update link status.
+ * Note: the DPDK definition of "wait_to_complete"
+ *   means block this call until link is up.
+ *   which is not worth supporting.
+ */
+int
+hn_dev_link_update(struct rte_eth_dev *dev,
+		   int wait_to_complete)
+{
+	struct hn_data *hv = dev->data->dev_private;
+	struct rte_eth_link link, old;
+	int error;
+
+	old = dev->data->dev_link;
+
+	error = hn_rndis_get_linkstatus(hv);
+	if (error)
+		return error;
+
+	hn_rndis_get_linkspeed(hv);
+
+	hn_vf_link_update(dev, wait_to_complete);
+
+	link = (struct rte_eth_link) {
+		.link_duplex = ETH_LINK_FULL_DUPLEX,
+		.link_autoneg = ETH_LINK_SPEED_FIXED,
+		.link_speed = hv->link_speed / 10000,
+	};
+
+	if (hv->link_status == NDIS_MEDIA_STATE_CONNECTED)
+		link.link_status = ETH_LINK_UP;
+	else
+		link.link_status = ETH_LINK_DOWN;
+
+	if (old.link_status == link.link_status)
+		return 0;
+
+	PMD_INIT_LOG(DEBUG, "Port %d is %s", dev->data->port_id,
+		     (link.link_status == ETH_LINK_UP) ? "up" : "down");
+
+	return rte_eth_linkstatus_set(dev, &link);
+}
+
+static void hn_dev_info_get(struct rte_eth_dev *dev,
+			    struct rte_eth_dev_info *dev_info)
+{
+	struct hn_data *hv = dev->data->dev_private;
+
+	dev_info->speed_capa = ETH_LINK_SPEED_10G;
+	dev_info->min_rx_bufsize = HN_MIN_RX_BUF_SIZE;
+	dev_info->max_rx_pktlen  = HN_MAX_XFER_LEN;
+	dev_info->max_mac_addrs  = 1;
+
+	dev_info->hash_key_size = NDIS_HASH_KEYSIZE_TOEPLITZ;
+	dev_info->flow_type_rss_offloads =
+		ETH_RSS_IPV4 | ETH_RSS_IPV6 | ETH_RSS_TCP | ETH_RSS_UDP;
+
+	dev_info->max_rx_queues = hv->max_queues;
+	dev_info->max_tx_queues = hv->max_queues;
+
+	hn_rndis_get_offload(hv, dev_info);
+	hn_vf_info_get(hv, dev_info);
+}
+
+static void
+hn_dev_promiscuous_enable(struct rte_eth_dev *dev)
+{
+	struct hn_data *hv = dev->data->dev_private;
+
+	hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_PROMISCUOUS);
+	hn_vf_promiscuous_enable(dev);
+}
+
+static void
+hn_dev_promiscuous_disable(struct rte_eth_dev *dev)
+{
+	struct hn_data *hv = dev->data->dev_private;
+	uint32_t filter;
+
+	filter = NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_BROADCAST;
+	if (dev->data->all_multicast)
+		filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
+	hn_rndis_set_rxfilter(hv, filter);
+	hn_vf_promiscuous_disable(dev);
+}
+
+static void
+hn_dev_allmulticast_enable(struct rte_eth_dev *dev)
+{
+	struct hn_data *hv = dev->data->dev_private;
+
+	hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
+			      NDIS_PACKET_TYPE_ALL_MULTICAST |
+			NDIS_PACKET_TYPE_BROADCAST);
+	hn_vf_allmulticast_enable(dev);
+}
+
+static void
+hn_dev_allmulticast_disable(struct rte_eth_dev *dev)
+{
+	struct hn_data *hv = dev->data->dev_private;
+
+	hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
+			     NDIS_PACKET_TYPE_BROADCAST);
+	hn_vf_allmulticast_disable(dev);
+}
+
+static int
+hn_dev_mc_addr_list(struct rte_eth_dev *dev,
+		     struct ether_addr *mc_addr_set,
+		     uint32_t nb_mc_addr)
+{
+	/* No filtering on the synthetic path, but can do it on VF */
+	return hn_vf_mc_addr_list(dev, mc_addr_set, nb_mc_addr);
+}
+
+/* Setup shared rx/tx queue data */
+static int hn_subchan_configure(struct hn_data *hv,
+				uint32_t subchan)
+{
+	struct vmbus_channel *primary = hn_primary_chan(hv);
+	int err;
+	unsigned int retry = 0;
+
+	PMD_DRV_LOG(DEBUG,
+		    "open %u subchannels", subchan);
+
+	/* Send create sub channels command */
+	err = hn_nvs_alloc_subchans(hv, &subchan);
+	if (err)
+		return  err;
+
+	while (subchan > 0) {
+		struct vmbus_channel *new_sc;
+		uint16_t chn_index;
+
+		err = rte_vmbus_subchan_open(primary, &new_sc);
+		if (err == -ENOENT && ++retry < 1000) {
+			/* This can happen if not ready yet */
+			rte_delay_ms(10);
+			continue;
+		}
+
+		if (err) {
+			PMD_DRV_LOG(ERR,
+				    "open subchannel failed: %d", err);
+			return err;
+		}
+
+		rte_vmbus_set_latency(hv->vmbus, new_sc, hv->latency);
+
+		retry = 0;
+		chn_index = rte_vmbus_sub_channel_index(new_sc);
+		if (chn_index == 0 || chn_index > hv->max_queues) {
+			PMD_DRV_LOG(ERR,
+				    "Invalid subchannel offermsg channel %u",
+				    chn_index);
+			return -EIO;
+		}
+
+		PMD_DRV_LOG(DEBUG, "new sub channel %u", chn_index);
+		hv->channels[chn_index] = new_sc;
+		--subchan;
+	}
+
+	return err;
+}
+
+static int hn_dev_configure(struct rte_eth_dev *dev)
+{
+	const struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
+	const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode;
+	const struct rte_eth_txmode *txmode = &dev_conf->txmode;
+
+	const struct rte_eth_rss_conf *rss_conf =
+		&dev_conf->rx_adv_conf.rss_conf;
+	struct hn_data *hv = dev->data->dev_private;
+	uint64_t unsupported;
+	int err, subchan;
+
+	PMD_INIT_FUNC_TRACE();
+
+	unsupported = txmode->offloads & ~HN_TX_OFFLOAD_CAPS;
+	if (unsupported) {
+		PMD_DRV_LOG(NOTICE,
+			    "unsupported TX offload: %#" PRIx64,
+			    unsupported);
+		return -EINVAL;
+	}
+
+	unsupported = rxmode->offloads & ~HN_RX_OFFLOAD_CAPS;
+	if (unsupported) {
+		PMD_DRV_LOG(NOTICE,
+			    "unsupported RX offload: %#" PRIx64,
+			    rxmode->offloads);
+		return -EINVAL;
+	}
+
+	hv->vlan_strip = !!(rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
+
+	err = hn_rndis_conf_offload(hv, txmode->offloads,
+				    rxmode->offloads);
+	if (err) {
+		PMD_DRV_LOG(NOTICE,
+			    "offload configure failed");
+		return err;
+	}
+
+	hv->num_queues = RTE_MAX(dev->data->nb_rx_queues,
+				 dev->data->nb_tx_queues);
+	subchan = hv->num_queues - 1;
+	if (subchan > 0) {
+		err = hn_subchan_configure(hv, subchan);
+		if (err) {
+			PMD_DRV_LOG(NOTICE,
+				    "subchannel configuration failed");
+			return err;
+		}
+
+		err = hn_rndis_conf_rss(hv, rss_conf);
+		if (err) {
+			PMD_DRV_LOG(NOTICE,
+				    "rss configuration failed");
+			return err;
+		}
+	}
+
+	return hn_vf_configure(dev, dev_conf);
+}
+
+static int hn_dev_stats_get(struct rte_eth_dev *dev,
+			    struct rte_eth_stats *stats)
+{
+	unsigned int i;
+
+	hn_vf_stats_get(dev, stats);
+
+	for (i = 0; i < dev->data->nb_tx_queues; i++) {
+		const struct hn_tx_queue *txq = dev->data->tx_queues[i];
+
+		if (!txq)
+			continue;
+
+		stats->opackets += txq->stats.packets;
+		stats->obytes += txq->stats.bytes;
+		stats->oerrors += txq->stats.errors;
+
+		if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
+			stats->q_opackets[i] = txq->stats.packets;
+			stats->q_obytes[i] = txq->stats.bytes;
+		}
+	}
+
+	for (i = 0; i < dev->data->nb_rx_queues; i++) {
+		const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
+
+		if (!rxq)
+			continue;
+
+		stats->ipackets += rxq->stats.packets;
+		stats->ibytes += rxq->stats.bytes;
+		stats->ierrors += rxq->stats.errors;
+		stats->imissed += rxq->stats.ring_full;
+
+		if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
+			stats->q_ipackets[i] = rxq->stats.packets;
+			stats->q_ibytes[i] = rxq->stats.bytes;
+		}
+	}
+
+	stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
+	return 0;
+}
+
+static void
+hn_dev_stats_reset(struct rte_eth_dev *dev)
+{
+	unsigned int i;
+
+	PMD_INIT_FUNC_TRACE();
+
+	for (i = 0; i < dev->data->nb_tx_queues; i++) {
+		struct hn_tx_queue *txq = dev->data->tx_queues[i];
+
+		if (!txq)
+			continue;
+		memset(&txq->stats, 0, sizeof(struct hn_stats));
+	}
+
+	for (i = 0; i < dev->data->nb_rx_queues; i++) {
+		struct hn_rx_queue *rxq = dev->data->rx_queues[i];
+
+		if (!rxq)
+			continue;
+
+		memset(&rxq->stats, 0, sizeof(struct hn_stats));
+	}
+}
+
+static void
+hn_dev_xstats_reset(struct rte_eth_dev *dev)
+{
+	hn_dev_stats_reset(dev);
+	hn_vf_xstats_reset(dev);
+}
+
+static int
+hn_dev_xstats_count(struct rte_eth_dev *dev)
+{
+	int ret, count;
+
+	count = dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings);
+	count += dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
+
+	ret = hn_vf_xstats_get_names(dev, NULL, 0);
+	if (ret < 0)
+		return ret;
+
+	return count + ret;
+}
+
+static int
+hn_dev_xstats_get_names(struct rte_eth_dev *dev,
+			struct rte_eth_xstat_name *xstats_names,
+			unsigned int limit)
+{
+	unsigned int i, t, count = 0;
+	int ret;
+
+	if (!xstats_names)
+		return hn_dev_xstats_count(dev);
+
+	/* Note: limit checked in rte_eth_xstats_names() */
+	for (i = 0; i < dev->data->nb_tx_queues; i++) {
+		const struct hn_tx_queue *txq = dev->data->tx_queues[i];
+
+		if (!txq)
+			continue;
+
+		if (count >= limit)
+			break;
+
+		for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
+			snprintf(xstats_names[count++].name,
+				 RTE_ETH_XSTATS_NAME_SIZE,
+				 "tx_q%u_%s", i, hn_stat_strings[t].name);
+	}
+
+	for (i = 0; i < dev->data->nb_rx_queues; i++)  {
+		const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
+
+		if (!rxq)
+			continue;
+
+		if (count >= limit)
+			break;
+
+		for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
+			snprintf(xstats_names[count++].name,
+				 RTE_ETH_XSTATS_NAME_SIZE,
+				 "rx_q%u_%s", i,
+				 hn_stat_strings[t].name);
+	}
+
+	ret = hn_vf_xstats_get_names(dev, xstats_names + count,
+				     limit - count);
+	if (ret < 0)
+		return ret;
+
+	return count + ret;
+}
+
+static int
+hn_dev_xstats_get(struct rte_eth_dev *dev,
+		  struct rte_eth_xstat *xstats,
+		  unsigned int n)
+{
+	unsigned int i, t, count = 0;
+	const unsigned int nstats = hn_dev_xstats_count(dev);
+	const char *stats;
+	int ret;
+
+	PMD_INIT_FUNC_TRACE();
+
+	if (n < nstats)
+		return nstats;
+
+	for (i = 0; i < dev->data->nb_tx_queues; i++) {
+		const struct hn_tx_queue *txq = dev->data->tx_queues[i];
+
+		if (!txq)
+			continue;
+
+		stats = (const char *)&txq->stats;
+		for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
+			xstats[count++].value = *(const uint64_t *)
+				(stats + hn_stat_strings[t].offset);
+	}
+
+	for (i = 0; i < dev->data->nb_rx_queues; i++) {
+		const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
+
+		if (!rxq)
+			continue;
+
+		stats = (const char *)&rxq->stats;
+		for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
+			xstats[count++].value = *(const uint64_t *)
+				(stats + hn_stat_strings[t].offset);
+	}
+
+	ret = hn_vf_xstats_get(dev, xstats + count, n - count);
+	if (ret < 0)
+		return ret;
+
+	return count + ret;
+}
+
+static int
+hn_dev_start(struct rte_eth_dev *dev)
+{
+	struct hn_data *hv = dev->data->dev_private;
+	int error;
+
+	PMD_INIT_FUNC_TRACE();
+
+	error = hn_rndis_set_rxfilter(hv,
+				      NDIS_PACKET_TYPE_BROADCAST |
+				      NDIS_PACKET_TYPE_ALL_MULTICAST |
+				      NDIS_PACKET_TYPE_DIRECTED);
+	if (error)
+		return error;
+
+	error = hn_vf_start(dev);
+	if (error)
+		hn_rndis_set_rxfilter(hv, 0);
+
+	return error;
+}
+
+static void
+hn_dev_stop(struct rte_eth_dev *dev)
+{
+	struct hn_data *hv = dev->data->dev_private;
+
+	PMD_INIT_FUNC_TRACE();
+
+	hn_rndis_set_rxfilter(hv, 0);
+	hn_vf_stop(dev);
+}
+
+static void
+hn_dev_close(struct rte_eth_dev *dev)
+{
+	PMD_INIT_FUNC_TRACE();
+
+	hn_vf_close(dev);
+	hn_dev_free_queues(dev);
+}
+
+static const struct eth_dev_ops hn_eth_dev_ops = {
+	.dev_configure		= hn_dev_configure,
+	.dev_start		= hn_dev_start,
+	.dev_stop		= hn_dev_stop,
+	.dev_close		= hn_dev_close,
+	.dev_infos_get		= hn_dev_info_get,
+	.dev_supported_ptypes_get = hn_vf_supported_ptypes,
+	.promiscuous_enable     = hn_dev_promiscuous_enable,
+	.promiscuous_disable    = hn_dev_promiscuous_disable,
+	.allmulticast_enable    = hn_dev_allmulticast_enable,
+	.allmulticast_disable   = hn_dev_allmulticast_disable,
+	.set_mc_addr_list	= hn_dev_mc_addr_list,
+	.tx_queue_setup		= hn_dev_tx_queue_setup,
+	.tx_queue_release	= hn_dev_tx_queue_release,
+	.tx_done_cleanup        = hn_dev_tx_done_cleanup,
+	.rx_queue_setup		= hn_dev_rx_queue_setup,
+	.rx_queue_release	= hn_dev_rx_queue_release,
+	.link_update		= hn_dev_link_update,
+	.stats_get		= hn_dev_stats_get,
+	.stats_reset            = hn_dev_stats_reset,
+	.xstats_get		= hn_dev_xstats_get,
+	.xstats_get_names	= hn_dev_xstats_get_names,
+	.xstats_reset		= hn_dev_xstats_reset,
+};
+
+/*
+ * Setup connection between PMD and kernel.
+ */
+static int
+hn_attach(struct hn_data *hv, unsigned int mtu)
+{
+	int error;
+
+	/* Attach NVS */
+	error = hn_nvs_attach(hv, mtu);
+	if (error)
+		goto failed_nvs;
+
+	/* Attach RNDIS */
+	error = hn_rndis_attach(hv);
+	if (error)
+		goto failed_rndis;
+
+	/*
+	 * NOTE:
+	 * Under certain conditions on certain versions of Hyper-V,
+	 * the RNDIS rxfilter is _not_ zero on the hypervisor side
+	 * after the successful RNDIS initialization.
+	 */
+	hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_NONE);
+	return 0;
+failed_rndis:
+	hn_nvs_detach(hv);
+failed_nvs:
+	return error;
+}
+
+static void
+hn_detach(struct hn_data *hv)
+{
+	hn_nvs_detach(hv);
+	hn_rndis_detach(hv);
+}
+
+static int
+eth_hn_dev_init(struct rte_eth_dev *eth_dev)
+{
+	struct hn_data *hv = eth_dev->data->dev_private;
+	struct rte_device *device = eth_dev->device;
+	struct rte_vmbus_device *vmbus;
+	unsigned int rxr_cnt;
+	int err, max_chan;
+
+	PMD_INIT_FUNC_TRACE();
+
+	vmbus = container_of(device, struct rte_vmbus_device, device);
+	eth_dev->dev_ops = &hn_eth_dev_ops;
+	eth_dev->tx_pkt_burst = &hn_xmit_pkts;
+	eth_dev->rx_pkt_burst = &hn_recv_pkts;
+
+	/*
+	 * for secondary processes, we don't initialize any further as primary
+	 * has already done this work.
+	 */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	/* Since Hyper-V only supports one MAC address, just use local data */
+	eth_dev->data->mac_addrs = &hv->mac_addr;
+
+	hv->vmbus = vmbus;
+	hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
+	hv->chim_res  = &vmbus->resource[HV_SEND_BUF_MAP];
+	hv->port_id = eth_dev->data->port_id;
+	hv->latency = HN_CHAN_LATENCY_NS;
+	hv->max_queues = 1;
+	hv->vf_port = HN_INVALID_PORT;
+
+	err = hn_parse_args(eth_dev);
+	if (err)
+		return err;
+
+	strlcpy(hv->owner.name, eth_dev->device->name,
+		RTE_ETH_MAX_OWNER_NAME_LEN);
+	err = rte_eth_dev_owner_new(&hv->owner.id);
+	if (err) {
+		PMD_INIT_LOG(ERR, "Can not get owner id");
+		return err;
+	}
+
+	/* Initialize primary channel input for control operations */
+	err = rte_vmbus_chan_open(vmbus, &hv->channels[0]);
+	if (err)
+		return err;
+
+	rte_vmbus_set_latency(hv->vmbus, hv->channels[0], hv->latency);
+
+	hv->primary = hn_rx_queue_alloc(hv, 0,
+					eth_dev->device->numa_node);
+
+	if (!hv->primary)
+		return -ENOMEM;
+
+	err = hn_attach(hv, ETHER_MTU);
+	if  (err)
+		goto failed;
+
+	err = hn_tx_pool_init(eth_dev);
+	if (err)
+		goto failed;
+
+	err = hn_rndis_get_eaddr(hv, hv->mac_addr.addr_bytes);
+	if (err)
+		goto failed;
+
+	/* Multi queue requires later versions of windows server */
+	if (hv->nvs_ver < NVS_VERSION_5)
+		return 0;
+
+	max_chan = rte_vmbus_max_channels(vmbus);
+	PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan);
+	if (max_chan <= 0)
+		goto failed;
+
+	if (hn_rndis_query_rsscaps(hv, &rxr_cnt) != 0)
+		rxr_cnt = 1;
+
+	hv->max_queues = RTE_MIN(rxr_cnt, (unsigned int)max_chan);
+
+	/* If VF was reported but not added, do it now */
+	if (hv->vf_present && !hn_vf_attached(hv)) {
+		PMD_INIT_LOG(DEBUG, "Adding VF device");
+
+		err = hn_vf_add(eth_dev, hv);
+		if (err)
+			hv->vf_present = 0;
+	}
+
+	return 0;
+
+failed:
+	PMD_INIT_LOG(NOTICE, "device init failed");
+
+	hn_tx_pool_uninit(eth_dev);
+	hn_detach(hv);
+	return err;
+}
+
+static int
+eth_hn_dev_uninit(struct rte_eth_dev *eth_dev)
+{
+	struct hn_data *hv = eth_dev->data->dev_private;
+
+	PMD_INIT_FUNC_TRACE();
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	hn_dev_stop(eth_dev);
+	hn_dev_close(eth_dev);
+
+	eth_dev->dev_ops = NULL;
+	eth_dev->tx_pkt_burst = NULL;
+	eth_dev->rx_pkt_burst = NULL;
+
+	hn_detach(hv);
+	hn_tx_pool_uninit(eth_dev);
+	rte_vmbus_chan_close(hv->primary->chan);
+	rte_free(hv->primary);
+	rte_eth_dev_owner_delete(hv->owner.id);
+
+	return 0;
+}
+
+static int eth_hn_probe(struct rte_vmbus_driver *drv __rte_unused,
+			struct rte_vmbus_device *dev)
+{
+	struct rte_eth_dev *eth_dev;
+	int ret;
+
+	PMD_INIT_FUNC_TRACE();
+
+	eth_dev = eth_dev_vmbus_allocate(dev, sizeof(struct hn_data));
+	if (!eth_dev)
+		return -ENOMEM;
+
+	ret = eth_hn_dev_init(eth_dev);
+	if (ret)
+		eth_dev_vmbus_release(eth_dev);
+	else
+		rte_eth_dev_probing_finish(eth_dev);
+
+	return ret;
+}
+
+static int eth_hn_remove(struct rte_vmbus_device *dev)
+{
+	struct rte_eth_dev *eth_dev;
+	int ret;
+
+	PMD_INIT_FUNC_TRACE();
+
+	eth_dev = rte_eth_dev_allocated(dev->device.name);
+	if (!eth_dev)
+		return -ENODEV;
+
+	ret = eth_hn_dev_uninit(eth_dev);
+	if (ret)
+		return ret;
+
+	eth_dev_vmbus_release(eth_dev);
+	return 0;
+}
+
+/* Network device GUID */
+static const rte_uuid_t hn_net_ids[] = {
+	/*  f8615163-df3e-46c5-913f-f2d2f965ed0e */
+	RTE_UUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x913f, 0xf2d2f965ed0eULL),
+	{ 0 }
+};
+
+static struct rte_vmbus_driver rte_netvsc_pmd = {
+	.id_table = hn_net_ids,
+	.probe = eth_hn_probe,
+	.remove = eth_hn_remove,
+};
+
+RTE_PMD_REGISTER_VMBUS(net_netvsc, rte_netvsc_pmd);
+RTE_PMD_REGISTER_KMOD_DEP(net_netvsc, "* uio_hv_generic");
+
+RTE_INIT(hn_init_log)
+{
+	hn_logtype_init = rte_log_register("pmd.net.netvsc.init");
+	if (hn_logtype_init >= 0)
+		rte_log_set_level(hn_logtype_init, RTE_LOG_NOTICE);
+	hn_logtype_driver = rte_log_register("pmd.net.netvsc.driver");
+	if (hn_logtype_driver >= 0)
+		rte_log_set_level(hn_logtype_driver, RTE_LOG_NOTICE);
+}