net/nfp: fix RSS hash configuration reporting

Prior to this fix the NFP PMD implementation of the .rss_hash_conf_get
callback did not propagate the current hardware state of rss_hf back up
to the caller. Users of the hash_conf_get callback would receive an
incorrect representation of what the RSS configuration currently is in
hardware.

Fixes: 934e4c60fbff ("nfp: add RSS")
Cc: stable@dpdk.org
Signed-off-by: Heinrich Kuhn <heinrich.kuhn@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>

diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 474719b..9994627 100644 (file)
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -2621,6 +2621,9 @@ nfp_net_rss_hash_conf_get(struct rte_eth_dev *dev,
        if (cfg_rss_ctrl & NFP_NET_CFG_RSS_IPV6)
                rss_hf |= ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_NONFRAG_IPV6_UDP;
 
+       /* Propagate current RSS hash functions to caller */
+       rss_conf->rss_hf = rss_hf;
+
        /* Reading the key size */
        rss_conf->rss_key_len = nn_cfg_readl(hw, NFP_NET_CFG_RSS_KEY_SZ);