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net/netvsc: disable multi-queue on older servers

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NDIS multi-queue support is only in WS2012 or later. Check the NDIS
version to limit to single queue on older versions. Similar code
exists in Linux driver.

Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
This commit is contained in:
Stephen Hemminger 2018-12-05 14:11:58 -08:00 committed by Thomas Monjalon
parent 825ab257b5
commit afbc22bf51
1 changed files with 5 additions and 0 deletions
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5
drivers/net/netvsc/hn_ethdev.c
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@ -732,6 +732,7 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
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;
err = hn_parse_args(eth_dev);
if (err)
@ -770,6 +771,10 @@ eth_hn_dev_init(struct rte_eth_dev *eth_dev)
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)