[dpdk-dev] [PATCH] examples/l2fwd-event: set RSS based on device capabilities

[pbhagavatula at marvell.com]

From: Pavan Nikhilesh <pbhagavatula at marvell.com>

Setup RSS configuration based on underlying device capabilities.

Signed-off-by: Satananda Burla <sburla at marvell.com>
Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
---
 examples/l2fwd-event/l2fwd_common.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/examples/l2fwd-event/l2fwd_common.c b/examples/l2fwd-event/l2fwd_common.c
index 0c069ec35..2fae6f52c 100644
--- a/examples/l2fwd-event/l2fwd_common.c
+++ b/examples/l2fwd-event/l2fwd_common.c
@@ -46,6 +46,17 @@ l2fwd_event_init_ports(struct l2fwd_resources *rsrc)
 		if (ret != 0)
 			rte_panic("Error during getting device (port %u) info: %s\n",
 				  port_id, strerror(-ret));
+		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
+			dev_info.flow_type_rss_offloads;
+		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
+				port_conf.rx_adv_conf.rss_conf.rss_hf) {
+			printf("Port %u modified RSS hash function based on hardware support,"
+			       "requested:%#"PRIx64" configured:%#"PRIx64"",
+				port_id,
+				port_conf.rx_adv_conf.rss_conf.rss_hf,
+				local_port_conf.rx_adv_conf.rss_conf.rss_hf);
+		}
+
 		if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 			local_port_conf.txmode.offloads |=
 				DEV_TX_OFFLOAD_MBUF_FAST_FREE;
-- 
2.17.1