1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016-2018 Microsoft Corporation
3 * Copyright(c) 2013-2016 Brocade Communications Systems, Inc.
13 #include <rte_ethdev.h>
14 #include <rte_memcpy.h>
15 #include <rte_string_fns.h>
16 #include <rte_memzone.h>
17 #include <rte_devargs.h>
18 #include <rte_malloc.h>
19 #include <rte_kvargs.h>
20 #include <rte_atomic.h>
21 #include <rte_branch_prediction.h>
22 #include <rte_ether.h>
23 #include <rte_ethdev_driver.h>
24 #include <rte_cycles.h>
25 #include <rte_errno.h>
26 #include <rte_memory.h>
29 #include <rte_bus_vmbus.h>
37 #define HN_TX_OFFLOAD_CAPS (DEV_TX_OFFLOAD_IPV4_CKSUM | \
38 DEV_TX_OFFLOAD_TCP_CKSUM | \
39 DEV_TX_OFFLOAD_UDP_CKSUM | \
40 DEV_TX_OFFLOAD_TCP_TSO | \
41 DEV_TX_OFFLOAD_MULTI_SEGS | \
42 DEV_TX_OFFLOAD_VLAN_INSERT)
44 #define HN_RX_OFFLOAD_CAPS (DEV_RX_OFFLOAD_CHECKSUM | \
45 DEV_RX_OFFLOAD_VLAN_STRIP)
48 int hn_logtype_driver;
50 struct hn_xstats_name_off {
51 char name[RTE_ETH_XSTATS_NAME_SIZE];
55 static const struct hn_xstats_name_off hn_stat_strings[] = {
56 { "good_packets", offsetof(struct hn_stats, packets) },
57 { "good_bytes", offsetof(struct hn_stats, bytes) },
58 { "errors", offsetof(struct hn_stats, errors) },
59 { "ring full", offsetof(struct hn_stats, ring_full) },
60 { "multicast_packets", offsetof(struct hn_stats, multicast) },
61 { "broadcast_packets", offsetof(struct hn_stats, broadcast) },
62 { "undersize_packets", offsetof(struct hn_stats, size_bins[0]) },
63 { "size_64_packets", offsetof(struct hn_stats, size_bins[1]) },
64 { "size_65_127_packets", offsetof(struct hn_stats, size_bins[2]) },
65 { "size_128_255_packets", offsetof(struct hn_stats, size_bins[3]) },
66 { "size_256_511_packets", offsetof(struct hn_stats, size_bins[4]) },
67 { "size_512_1023_packets", offsetof(struct hn_stats, size_bins[5]) },
68 { "size_1024_1518_packets", offsetof(struct hn_stats, size_bins[6]) },
69 { "size_1519_max_packets", offsetof(struct hn_stats, size_bins[7]) },
72 static struct rte_eth_dev *
73 eth_dev_vmbus_allocate(struct rte_vmbus_device *dev, size_t private_data_size)
75 struct rte_eth_dev *eth_dev;
81 name = dev->device.name;
83 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
84 eth_dev = rte_eth_dev_allocate(name);
86 PMD_DRV_LOG(NOTICE, "can not allocate rte ethdev");
90 if (private_data_size) {
91 eth_dev->data->dev_private =
92 rte_zmalloc_socket(name, private_data_size,
93 RTE_CACHE_LINE_SIZE, dev->device.numa_node);
94 if (!eth_dev->data->dev_private) {
95 PMD_DRV_LOG(NOTICE, "can not allocate driver data");
96 rte_eth_dev_release_port(eth_dev);
101 eth_dev = rte_eth_dev_attach_secondary(name);
103 PMD_DRV_LOG(NOTICE, "can not attach secondary");
108 eth_dev->device = &dev->device;
110 /* interrupt is simulated */
111 dev->intr_handle.type = RTE_INTR_HANDLE_EXT;
112 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
113 eth_dev->intr_handle = &dev->intr_handle;
119 eth_dev_vmbus_release(struct rte_eth_dev *eth_dev)
121 /* mac_addrs must not be freed alone because part of dev_private */
122 eth_dev->data->mac_addrs = NULL;
123 /* free ether device */
124 rte_eth_dev_release_port(eth_dev);
126 eth_dev->device = NULL;
127 eth_dev->intr_handle = NULL;
130 /* handle "latency=X" from devargs */
131 static int hn_set_latency(const char *key, const char *value, void *opaque)
133 struct hn_data *hv = opaque;
138 lat = strtoul(value, &endp, 0);
140 if (*value == '\0' || *endp != '\0') {
141 PMD_DRV_LOG(ERR, "invalid parameter %s=%s", key, value);
145 PMD_DRV_LOG(DEBUG, "set latency %lu usec", lat);
147 hv->latency = lat * 1000; /* usec to nsec */
151 /* Parse device arguments */
152 static int hn_parse_args(const struct rte_eth_dev *dev)
154 struct hn_data *hv = dev->data->dev_private;
155 struct rte_devargs *devargs = dev->device->devargs;
156 static const char * const valid_keys[] = {
160 struct rte_kvargs *kvlist;
166 PMD_INIT_LOG(DEBUG, "device args %s %s",
167 devargs->name, devargs->args);
169 kvlist = rte_kvargs_parse(devargs->args, valid_keys);
171 PMD_DRV_LOG(NOTICE, "invalid parameters");
175 ret = rte_kvargs_process(kvlist, "latency", hn_set_latency, hv);
177 PMD_DRV_LOG(ERR, "Unable to process latency arg\n");
179 rte_kvargs_free(kvlist);
183 /* Update link status.
184 * Note: the DPDK definition of "wait_to_complete"
185 * means block this call until link is up.
186 * which is not worth supporting.
189 hn_dev_link_update(struct rte_eth_dev *dev,
190 int wait_to_complete)
192 struct hn_data *hv = dev->data->dev_private;
193 struct rte_eth_link link, old;
196 old = dev->data->dev_link;
198 error = hn_rndis_get_linkstatus(hv);
202 hn_rndis_get_linkspeed(hv);
204 hn_vf_link_update(dev, wait_to_complete);
206 link = (struct rte_eth_link) {
207 .link_duplex = ETH_LINK_FULL_DUPLEX,
208 .link_autoneg = ETH_LINK_SPEED_FIXED,
209 .link_speed = hv->link_speed / 10000,
212 if (hv->link_status == NDIS_MEDIA_STATE_CONNECTED)
213 link.link_status = ETH_LINK_UP;
215 link.link_status = ETH_LINK_DOWN;
217 if (old.link_status == link.link_status)
220 PMD_INIT_LOG(DEBUG, "Port %d is %s", dev->data->port_id,
221 (link.link_status == ETH_LINK_UP) ? "up" : "down");
223 return rte_eth_linkstatus_set(dev, &link);
226 static void hn_dev_info_get(struct rte_eth_dev *dev,
227 struct rte_eth_dev_info *dev_info)
229 struct hn_data *hv = dev->data->dev_private;
231 dev_info->speed_capa = ETH_LINK_SPEED_10G;
232 dev_info->min_rx_bufsize = HN_MIN_RX_BUF_SIZE;
233 dev_info->max_rx_pktlen = HN_MAX_XFER_LEN;
234 dev_info->max_mac_addrs = 1;
236 dev_info->hash_key_size = NDIS_HASH_KEYSIZE_TOEPLITZ;
237 dev_info->flow_type_rss_offloads =
238 ETH_RSS_IPV4 | ETH_RSS_IPV6 | ETH_RSS_TCP | ETH_RSS_UDP;
240 dev_info->max_rx_queues = hv->max_queues;
241 dev_info->max_tx_queues = hv->max_queues;
243 hn_rndis_get_offload(hv, dev_info);
244 hn_vf_info_get(hv, dev_info);
248 hn_dev_promiscuous_enable(struct rte_eth_dev *dev)
250 struct hn_data *hv = dev->data->dev_private;
252 hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_PROMISCUOUS);
253 hn_vf_promiscuous_enable(dev);
257 hn_dev_promiscuous_disable(struct rte_eth_dev *dev)
259 struct hn_data *hv = dev->data->dev_private;
262 filter = NDIS_PACKET_TYPE_DIRECTED | NDIS_PACKET_TYPE_BROADCAST;
263 if (dev->data->all_multicast)
264 filter |= NDIS_PACKET_TYPE_ALL_MULTICAST;
265 hn_rndis_set_rxfilter(hv, filter);
266 hn_vf_promiscuous_disable(dev);
270 hn_dev_allmulticast_enable(struct rte_eth_dev *dev)
272 struct hn_data *hv = dev->data->dev_private;
274 hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
275 NDIS_PACKET_TYPE_ALL_MULTICAST |
276 NDIS_PACKET_TYPE_BROADCAST);
277 hn_vf_allmulticast_enable(dev);
281 hn_dev_allmulticast_disable(struct rte_eth_dev *dev)
283 struct hn_data *hv = dev->data->dev_private;
285 hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_DIRECTED |
286 NDIS_PACKET_TYPE_BROADCAST);
287 hn_vf_allmulticast_disable(dev);
291 hn_dev_mc_addr_list(struct rte_eth_dev *dev,
292 struct ether_addr *mc_addr_set,
295 /* No filtering on the synthetic path, but can do it on VF */
296 return hn_vf_mc_addr_list(dev, mc_addr_set, nb_mc_addr);
299 /* Setup shared rx/tx queue data */
300 static int hn_subchan_configure(struct hn_data *hv,
303 struct vmbus_channel *primary = hn_primary_chan(hv);
305 unsigned int retry = 0;
308 "open %u subchannels", subchan);
310 /* Send create sub channels command */
311 err = hn_nvs_alloc_subchans(hv, &subchan);
315 while (subchan > 0) {
316 struct vmbus_channel *new_sc;
319 err = rte_vmbus_subchan_open(primary, &new_sc);
320 if (err == -ENOENT && ++retry < 1000) {
321 /* This can happen if not ready yet */
328 "open subchannel failed: %d", err);
332 rte_vmbus_set_latency(hv->vmbus, new_sc, hv->latency);
335 chn_index = rte_vmbus_sub_channel_index(new_sc);
336 if (chn_index == 0 || chn_index > hv->max_queues) {
338 "Invalid subchannel offermsg channel %u",
343 PMD_DRV_LOG(DEBUG, "new sub channel %u", chn_index);
344 hv->channels[chn_index] = new_sc;
351 static int hn_dev_configure(struct rte_eth_dev *dev)
353 const struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
354 const struct rte_eth_rxmode *rxmode = &dev_conf->rxmode;
355 const struct rte_eth_txmode *txmode = &dev_conf->txmode;
357 const struct rte_eth_rss_conf *rss_conf =
358 &dev_conf->rx_adv_conf.rss_conf;
359 struct hn_data *hv = dev->data->dev_private;
360 uint64_t unsupported;
363 PMD_INIT_FUNC_TRACE();
365 unsupported = txmode->offloads & ~HN_TX_OFFLOAD_CAPS;
368 "unsupported TX offload: %#" PRIx64,
373 unsupported = rxmode->offloads & ~HN_RX_OFFLOAD_CAPS;
376 "unsupported RX offload: %#" PRIx64,
381 err = hn_rndis_conf_offload(hv, txmode->offloads,
385 "offload configure failed");
389 hv->num_queues = RTE_MAX(dev->data->nb_rx_queues,
390 dev->data->nb_tx_queues);
391 subchan = hv->num_queues - 1;
393 err = hn_subchan_configure(hv, subchan);
396 "subchannel configuration failed");
400 err = hn_rndis_conf_rss(hv, rss_conf);
403 "rss configuration failed");
408 return hn_vf_configure(dev, dev_conf);
411 static int hn_dev_stats_get(struct rte_eth_dev *dev,
412 struct rte_eth_stats *stats)
416 hn_vf_stats_get(dev, stats);
418 for (i = 0; i < dev->data->nb_tx_queues; i++) {
419 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
424 stats->opackets += txq->stats.packets;
425 stats->obytes += txq->stats.bytes;
426 stats->oerrors += txq->stats.errors;
428 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
429 stats->q_opackets[i] = txq->stats.packets;
430 stats->q_obytes[i] = txq->stats.bytes;
434 for (i = 0; i < dev->data->nb_rx_queues; i++) {
435 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
440 stats->ipackets += rxq->stats.packets;
441 stats->ibytes += rxq->stats.bytes;
442 stats->ierrors += rxq->stats.errors;
443 stats->imissed += rxq->stats.ring_full;
445 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
446 stats->q_ipackets[i] = rxq->stats.packets;
447 stats->q_ibytes[i] = rxq->stats.bytes;
451 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
456 hn_dev_stats_reset(struct rte_eth_dev *dev)
460 PMD_INIT_FUNC_TRACE();
462 for (i = 0; i < dev->data->nb_tx_queues; i++) {
463 struct hn_tx_queue *txq = dev->data->tx_queues[i];
467 memset(&txq->stats, 0, sizeof(struct hn_stats));
470 for (i = 0; i < dev->data->nb_rx_queues; i++) {
471 struct hn_rx_queue *rxq = dev->data->rx_queues[i];
476 memset(&rxq->stats, 0, sizeof(struct hn_stats));
481 hn_dev_xstats_reset(struct rte_eth_dev *dev)
483 hn_dev_stats_reset(dev);
484 hn_vf_xstats_reset(dev);
488 hn_dev_xstats_count(struct rte_eth_dev *dev)
492 count = dev->data->nb_tx_queues * RTE_DIM(hn_stat_strings);
493 count += dev->data->nb_rx_queues * RTE_DIM(hn_stat_strings);
495 ret = hn_vf_xstats_get_names(dev, NULL, 0);
503 hn_dev_xstats_get_names(struct rte_eth_dev *dev,
504 struct rte_eth_xstat_name *xstats_names,
507 unsigned int i, t, count = 0;
511 return hn_dev_xstats_count(dev);
513 /* Note: limit checked in rte_eth_xstats_names() */
514 for (i = 0; i < dev->data->nb_tx_queues; i++) {
515 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
523 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
524 snprintf(xstats_names[count++].name,
525 RTE_ETH_XSTATS_NAME_SIZE,
526 "tx_q%u_%s", i, hn_stat_strings[t].name);
529 for (i = 0; i < dev->data->nb_rx_queues; i++) {
530 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
538 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
539 snprintf(xstats_names[count++].name,
540 RTE_ETH_XSTATS_NAME_SIZE,
542 hn_stat_strings[t].name);
545 ret = hn_vf_xstats_get_names(dev, xstats_names + count,
554 hn_dev_xstats_get(struct rte_eth_dev *dev,
555 struct rte_eth_xstat *xstats,
558 unsigned int i, t, count = 0;
559 const unsigned int nstats = hn_dev_xstats_count(dev);
563 PMD_INIT_FUNC_TRACE();
568 for (i = 0; i < dev->data->nb_tx_queues; i++) {
569 const struct hn_tx_queue *txq = dev->data->tx_queues[i];
574 stats = (const char *)&txq->stats;
575 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
576 xstats[count++].value = *(const uint64_t *)
577 (stats + hn_stat_strings[t].offset);
580 for (i = 0; i < dev->data->nb_rx_queues; i++) {
581 const struct hn_rx_queue *rxq = dev->data->rx_queues[i];
586 stats = (const char *)&rxq->stats;
587 for (t = 0; t < RTE_DIM(hn_stat_strings); t++)
588 xstats[count++].value = *(const uint64_t *)
589 (stats + hn_stat_strings[t].offset);
592 ret = hn_vf_xstats_get(dev, xstats + count, n - count);
600 hn_dev_start(struct rte_eth_dev *dev)
602 struct hn_data *hv = dev->data->dev_private;
605 PMD_INIT_FUNC_TRACE();
607 error = hn_rndis_set_rxfilter(hv,
608 NDIS_PACKET_TYPE_BROADCAST |
609 NDIS_PACKET_TYPE_ALL_MULTICAST |
610 NDIS_PACKET_TYPE_DIRECTED);
614 error = hn_vf_start(dev);
616 hn_rndis_set_rxfilter(hv, 0);
622 hn_dev_stop(struct rte_eth_dev *dev)
624 struct hn_data *hv = dev->data->dev_private;
626 PMD_INIT_FUNC_TRACE();
628 hn_rndis_set_rxfilter(hv, 0);
633 hn_dev_close(struct rte_eth_dev *dev __rte_unused)
635 PMD_INIT_LOG(DEBUG, "close");
640 static const struct eth_dev_ops hn_eth_dev_ops = {
641 .dev_configure = hn_dev_configure,
642 .dev_start = hn_dev_start,
643 .dev_stop = hn_dev_stop,
644 .dev_close = hn_dev_close,
645 .dev_infos_get = hn_dev_info_get,
646 .dev_supported_ptypes_get = hn_vf_supported_ptypes,
647 .promiscuous_enable = hn_dev_promiscuous_enable,
648 .promiscuous_disable = hn_dev_promiscuous_disable,
649 .allmulticast_enable = hn_dev_allmulticast_enable,
650 .allmulticast_disable = hn_dev_allmulticast_disable,
651 .set_mc_addr_list = hn_dev_mc_addr_list,
652 .tx_queue_setup = hn_dev_tx_queue_setup,
653 .tx_queue_release = hn_dev_tx_queue_release,
654 .tx_done_cleanup = hn_dev_tx_done_cleanup,
655 .rx_queue_setup = hn_dev_rx_queue_setup,
656 .rx_queue_release = hn_dev_rx_queue_release,
657 .link_update = hn_dev_link_update,
658 .stats_get = hn_dev_stats_get,
659 .stats_reset = hn_dev_stats_reset,
660 .xstats_get = hn_dev_xstats_get,
661 .xstats_get_names = hn_dev_xstats_get_names,
662 .xstats_reset = hn_dev_xstats_reset,
666 * Setup connection between PMD and kernel.
669 hn_attach(struct hn_data *hv, unsigned int mtu)
674 error = hn_nvs_attach(hv, mtu);
679 error = hn_rndis_attach(hv);
685 * Under certain conditions on certain versions of Hyper-V,
686 * the RNDIS rxfilter is _not_ zero on the hypervisor side
687 * after the successful RNDIS initialization.
689 hn_rndis_set_rxfilter(hv, NDIS_PACKET_TYPE_NONE);
698 hn_detach(struct hn_data *hv)
705 eth_hn_dev_init(struct rte_eth_dev *eth_dev)
707 struct hn_data *hv = eth_dev->data->dev_private;
708 struct rte_device *device = eth_dev->device;
709 struct rte_vmbus_device *vmbus;
710 unsigned int rxr_cnt;
713 PMD_INIT_FUNC_TRACE();
715 vmbus = container_of(device, struct rte_vmbus_device, device);
716 eth_dev->dev_ops = &hn_eth_dev_ops;
717 eth_dev->tx_pkt_burst = &hn_xmit_pkts;
718 eth_dev->rx_pkt_burst = &hn_recv_pkts;
721 * for secondary processes, we don't initialize any further as primary
722 * has already done this work.
724 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
727 /* Since Hyper-V only supports one MAC address, just use local data */
728 eth_dev->data->mac_addrs = &hv->mac_addr;
731 hv->rxbuf_res = &vmbus->resource[HV_RECV_BUF_MAP];
732 hv->chim_res = &vmbus->resource[HV_SEND_BUF_MAP];
733 hv->port_id = eth_dev->data->port_id;
734 hv->latency = HN_CHAN_LATENCY_NS;
736 hv->vf_port = HN_INVALID_PORT;
738 err = hn_parse_args(eth_dev);
742 strlcpy(hv->owner.name, eth_dev->device->name,
743 RTE_ETH_MAX_OWNER_NAME_LEN);
744 err = rte_eth_dev_owner_new(&hv->owner.id);
746 PMD_INIT_LOG(ERR, "Can not get owner id");
750 /* Initialize primary channel input for control operations */
751 err = rte_vmbus_chan_open(vmbus, &hv->channels[0]);
755 rte_vmbus_set_latency(hv->vmbus, hv->channels[0], hv->latency);
757 hv->primary = hn_rx_queue_alloc(hv, 0,
758 eth_dev->device->numa_node);
763 err = hn_attach(hv, ETHER_MTU);
767 err = hn_tx_pool_init(eth_dev);
771 err = hn_rndis_get_eaddr(hv, hv->mac_addr.addr_bytes);
775 /* Multi queue requires later versions of windows server */
776 if (hv->nvs_ver < NVS_VERSION_5)
779 max_chan = rte_vmbus_max_channels(vmbus);
780 PMD_INIT_LOG(DEBUG, "VMBus max channels %d", max_chan);
784 if (hn_rndis_query_rsscaps(hv, &rxr_cnt) != 0)
787 hv->max_queues = RTE_MIN(rxr_cnt, (unsigned int)max_chan);
789 /* If VF was reported but not added, do it now */
790 if (hv->vf_present && !hn_vf_attached(hv)) {
791 PMD_INIT_LOG(DEBUG, "Adding VF device");
793 err = hn_vf_add(eth_dev, hv);
801 PMD_INIT_LOG(NOTICE, "device init failed");
803 hn_tx_pool_uninit(eth_dev);
809 eth_hn_dev_uninit(struct rte_eth_dev *eth_dev)
811 struct hn_data *hv = eth_dev->data->dev_private;
813 PMD_INIT_FUNC_TRACE();
815 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
818 hn_dev_stop(eth_dev);
819 hn_dev_close(eth_dev);
821 eth_dev->dev_ops = NULL;
822 eth_dev->tx_pkt_burst = NULL;
823 eth_dev->rx_pkt_burst = NULL;
826 hn_tx_pool_uninit(eth_dev);
827 rte_vmbus_chan_close(hv->primary->chan);
828 rte_free(hv->primary);
829 rte_eth_dev_owner_delete(hv->owner.id);
834 static int eth_hn_probe(struct rte_vmbus_driver *drv __rte_unused,
835 struct rte_vmbus_device *dev)
837 struct rte_eth_dev *eth_dev;
840 PMD_INIT_FUNC_TRACE();
842 eth_dev = eth_dev_vmbus_allocate(dev, sizeof(struct hn_data));
846 ret = eth_hn_dev_init(eth_dev);
848 eth_dev_vmbus_release(eth_dev);
850 rte_eth_dev_probing_finish(eth_dev);
855 static int eth_hn_remove(struct rte_vmbus_device *dev)
857 struct rte_eth_dev *eth_dev;
860 PMD_INIT_FUNC_TRACE();
862 eth_dev = rte_eth_dev_allocated(dev->device.name);
866 ret = eth_hn_dev_uninit(eth_dev);
870 eth_dev_vmbus_release(eth_dev);
874 /* Network device GUID */
875 static const rte_uuid_t hn_net_ids[] = {
876 /* f8615163-df3e-46c5-913f-f2d2f965ed0e */
877 RTE_UUID_INIT(0xf8615163, 0xdf3e, 0x46c5, 0x913f, 0xf2d2f965ed0eULL),
881 static struct rte_vmbus_driver rte_netvsc_pmd = {
882 .id_table = hn_net_ids,
883 .probe = eth_hn_probe,
884 .remove = eth_hn_remove,
887 RTE_PMD_REGISTER_VMBUS(net_netvsc, rte_netvsc_pmd);
888 RTE_PMD_REGISTER_KMOD_DEP(net_netvsc, "* uio_hv_generic");
890 RTE_INIT(hn_init_log)
892 hn_logtype_init = rte_log_register("pmd.net.netvsc.init");
893 if (hn_logtype_init >= 0)
894 rte_log_set_level(hn_logtype_init, RTE_LOG_NOTICE);
895 hn_logtype_driver = rte_log_register("pmd.net.netvsc.driver");
896 if (hn_logtype_driver >= 0)
897 rte_log_set_level(hn_logtype_driver, RTE_LOG_NOTICE);