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From: Guangbin Huang <huangguangbin2@huawei.com>
To: <davem@davemloft.net>, <kuba@kernel.org>, <wangjie125@huawei.com>
Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<lipeng321@huawei.com>, <huangguangbin2@huawei.com>,
	<chenhao288@hisilicon.com>
Subject: [PATCH net 1/4] net: hns3: fix VF RSS failed problem after PF enable multi-TCs
Date: Fri, 26 Nov 2021 20:03:15 +0800	[thread overview]
Message-ID: <20211126120318.33921-2-huangguangbin2@huawei.com> (raw)
In-Reply-To: <20211126120318.33921-1-huangguangbin2@huawei.com>

When PF is set to multi-TCs and configured mapping relationship between
priorities and TCs, the hardware will active these settings for this PF
and its VFs.

In this case when VF just uses one TC and its rx packets contain priority,
and if the priority is not mapped to TC0, as other TCs of VF is not valid,
hardware always put this kind of packets to the queue 0. It cause this kind
of packets of VF can not be used RSS function.

To fix this problem, set tc mode of all unused TCs of VF to the setting of
TC0, then rx packet with priority which map to unused TC will be direct to
TC0.

Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 25c419d40066..41afaeea881b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -703,9 +703,9 @@ static int hclgevf_set_rss_tc_mode(struct hclgevf_dev *hdev,  u16 rss_size)
 	roundup_size = ilog2(roundup_size);
 
 	for (i = 0; i < HCLGEVF_MAX_TC_NUM; i++) {
-		tc_valid[i] = !!(hdev->hw_tc_map & BIT(i));
+		tc_valid[i] = 1;
 		tc_size[i] = roundup_size;
-		tc_offset[i] = rss_size * i;
+		tc_offset[i] = (hdev->hw_tc_map & BIT(i)) ? rss_size * i : 0;
 	}
 
 	hclgevf_cmd_setup_basic_desc(&desc, HCLGEVF_OPC_RSS_TC_MODE, false);
-- 
2.33.0


  reply	other threads:[~2021-11-26 12:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-26 12:03 [PATCH net 0/4] net: hns3: add some fixes for -net Guangbin Huang
2021-11-26 12:03 ` Guangbin Huang [this message]
2021-11-26 12:03 ` [PATCH net 2/4] net: hns3: add check NULL address for page pool Guangbin Huang
2021-11-26 12:03 ` [PATCH net 3/4] net: hns3: fix one incorrect value of page pool info when queried by debugfs Guangbin Huang
2021-11-26 12:03 ` [PATCH net 4/4] net: hns3: fix incorrect components info of ethtool --reset command Guangbin Huang
2021-11-26 19:40 ` [PATCH net 0/4] net: hns3: add some fixes for -net patchwork-bot+netdevbpf

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