[dpdk-dev] [PATCH 6/7] net/netvsc: do RSS across rx queue only

[Stephen Hemminger]

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 <stephen at 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