diff mbox

[dpdk-dev,v1,1/2] ethdev: add supported hash function check

Message ID 20180409121035.148813-1-xuemingl@mellanox.com (mailing list archive)
State Superseded, archived
Delegated to: Ferruh Yigit
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation fail Compilation issues

Commit Message

Xueming Li April 9, 2018, 12:10 p.m. UTC 
  Add supported RSS hash function check in device configuration to
have better error verbosity for application developers.

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
---
 lib/librte_ether/rte_ethdev.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

Comments

Thomas Monjalon April 16, 2018, 10:56 p.m. UTC | #1 
09/04/2018 14:10, Xueming Li:
> Add supported RSS hash function check in device configuration to
> have better error verbosity for application developers.

In other words, you check whether the requested RSS type is supported.

I don't see any reason to not accept it.
Any other comment?
diff mbox

Patch

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 209796d46..a8e122781 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -1179,6 +1179,17 @@  rte_eth_dev_configure(uint16_t port_id, uint16_t nb_rx_q, uint16_t nb_tx_q,
 							ETHER_MAX_LEN;
 	}
 
+	/* Check that device supports requested rss hash functions. */
+	if ((dev_info.flow_type_rss_offloads |
+	     dev_conf->rx_adv_conf.rss_conf.rss_hf) !=
+	    dev_info.flow_type_rss_offloads) {
+		RTE_PMD_DEBUG_TRACE("ethdev port_id=%d invalid rss_hf: 0x%lx, valid value: 0x%lx\n",
+				    port_id,
+				    dev_conf->rx_adv_conf.rss_conf.rss_hf,
+				    dev_info.flow_type_rss_offloads);
+		return -EINVAL;
+	}
+
 	/*
 	 * Setup new number of RX/TX queues and reconfigure device.
 	 */
@@ -2832,9 +2843,19 @@  rte_eth_dev_rss_hash_update(uint16_t port_id,
 			    struct rte_eth_rss_conf *rss_conf)
 {
 	struct rte_eth_dev *dev;
+	struct rte_eth_dev_info dev_info = {0};
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
 	dev = &rte_eth_devices[port_id];
+	rte_eth_dev_info_get(port_id, &dev_info);
+	if ((dev_info.flow_type_rss_offloads | rss_conf->rss_hf) !=
+	    dev_info.flow_type_rss_offloads) {
+		RTE_PMD_DEBUG_TRACE("ethdev port_id=%d invalid rss_hf: 0x%lx, valid value: 0x%lx\n",
+				    port_id,
+				    rss_conf->rss_hf,
+				    dev_info.flow_type_rss_offloads);
+		return -EINVAL;
+	}
 	RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rss_hash_update, -ENOTSUP);
 	return eth_err(port_id, (*dev->dev_ops->rss_hash_update)(dev,
 								 rss_conf));