If number of tx queues is greater than the number of rx queues; the driver ends up allocating more channels than rx queues. The problem is that the RSS indirection table is programed such that some packets will end up on a channel that would never be polled. The fix is to limit the RSS indirection table by number of rx queues not channels.
Fixes: 92d23a57cafe ("net/netvsc: support configuring RSS parameters") Signed-off-by: Stephen Hemminger <step...@networkplumber.org> --- drivers/net/netvsc/hn_ethdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/netvsc/hn_ethdev.c b/drivers/net/netvsc/hn_ethdev.c index 7bf5465ce5e7..60102362e124 100644 --- a/drivers/net/netvsc/hn_ethdev.c +++ b/drivers/net/netvsc/hn_ethdev.c @@ -575,7 +575,7 @@ static int hn_dev_configure(struct rte_eth_dev *dev) dev->data->nb_tx_queues); for (i = 0; i < NDIS_HASH_INDCNT; i++) - hv->rss_ind[i] = i % hv->num_queues; + hv->rss_ind[i] = i % dev->data->nb_rx_queues; hn_rss_hash_init(hv, rss_conf); -- 2.20.1