diff mbox

[dpdk-dev] net/fm10k: remove RSS restriction with num of queues

Message ID 6ac145b7-23c5-4741-95a7-e3ebc072ad6e@zyc-PC.local (mailing list archive)
State Accepted, archived
Delegated to: Helin Zhang
Headers

Checks

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

Commit Message

Matt Dec. 4, 2017, 6:38 a.m. UTC 
  FM10K HW does not have such restrictions.

Enabling RSS with single queue is not used to distribute flow but to
compute a RSS hash value.
It can reduce cpu cycles of computing a hash value with five tuples.
In addition, there is an explicit method to disable RSS instead of an
obscure way.

Signed-off-by: Yangchao Zhou <zhouyates@gmail.com>
---
 drivers/net/fm10k/fm10k_ethdev.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Zhang, Helin Dec. 20, 2017, 6:40 a.m. UTC | #1 
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of zhouyangchao
> Sent: Monday, December 4, 2017 2:38 PM
> To: dev@dpdk.org
> Cc: Zhang, Qi Z
> Subject: [dpdk-dev] [PATCH] net/fm10k: remove RSS restriction with num of
> queues
> 
> FM10K HW does not have such restrictions.
> 
> Enabling RSS with single queue is not used to distribute flow but to compute
> a RSS hash value.
> It can reduce cpu cycles of computing a hash value with five tuples.
> In addition, there is an explicit method to disable RSS instead of an obscure
> way.
> 
> Signed-off-by: Yangchao Zhou <zhouyates@gmail.com>

Applied to next-net-intel, thanks! /Helin
diff mbox

Patch

diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index 2d05a46..403f6c5 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -533,9 +533,8 @@  fm10k_dev_rss_configure(struct rte_eth_dev *dev)
 		0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA,
 	};
 
-	if (dev->data->nb_rx_queues == 1 ||
-	    dev_conf->rxmode.mq_mode != ETH_MQ_RX_RSS ||
-	    dev_conf->rx_adv_conf.rss_conf.rss_hf == 0) {
+	if (dev_conf->rxmode.mq_mode != ETH_MQ_RX_RSS ||
+		dev_conf->rx_adv_conf.rss_conf.rss_hf == 0) {
 		FM10K_WRITE_REG(hw, FM10K_MRQC(0), 0);
 		return;
 	}