From 019a28912bf0113566ed5599192973bc1a7cbb07 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Thu, 30 Apr 2020 12:08:52 -0700 Subject: [PATCH] net/netvsc: do RSS across Rx queue only 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 programmed 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") Cc: stable@dpdk.org Signed-off-by: Stephen Hemminger --- 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 7bf5465ce5..60102362e1 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