From e1a803ba43b99f4fb4e3f6212aea7b46c4ebf3e8 Mon Sep 17 00:00:00 2001
From: Wenjun Wu <wenjun1.wu@intel.com>
Date: Mon, 15 Mar 2021 08:59:53 +0800
Subject: [PATCH] net/iavf: fix RSS hash update
This patch change judgment statements to disable RSS for vf
when users need to disable RSS or RSS hash function configured
is not supported.
Fixes: 95f2f0e9fc2a ("net/iavf: improve default RSS")
Cc: stable@dpdk.org
Signed-off-by: Wenjun Wu <wenjun1.wu@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
---
drivers/net/iavf/iavf_ethdev.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 4d37722022..8610efba6d 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -1250,8 +1250,17 @@ iavf_dev_rss_hash_update(struct rte_eth_dev *dev,
if (ret)
return ret;
- if (rss_conf->rss_hf == 0)
+ if (rss_conf->rss_hf == 0) {
+ vf->rss_hf = 0;
+ ret = iavf_set_hena(adapter, 0);
+
+ /* It is a workaround, temporarily allow error to be returned
+ * due to possible lack of PF handling for hena = 0.
+ */
+ if (ret)
+ PMD_DRV_LOG(WARNING, "fail to clean existing RSS, lack PF support");
return 0;
+ }
if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF) {
/* Clear existing RSS. */
--
2.39.5