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From: Souvik Dey <sodey@rbbn.com>
To: beilei.xing@intel.com, jia.guo@intel.com, qi.z.zhang@intel.com
Cc: dev@dpdk.org, Souvik Dey <sodey@rbbn.com>
Subject: [dpdk-dev] [PATCH v2] net/i40e: issue with ADD VLAN from Guest
Date: Sat, 12 Dec 2020 08:05:25 -0500
Message-ID: <20201212130525.14656-1-sodey@rbbn.com> (raw)
In-Reply-To: <20201209175516.11844-1-sodey@rbbn.com>

Reset the configuration of vlan strip that would be change
by the pf kernel driver when adding vlan from vf.
Application cannot use rte_eth_dev_set_vlan_offload() to set
the VLAN_STRIP, as this will only work for the first time when
original and current config mismatch, but for all subsequent call
it will be ignored.

Signed-off-by: Souvik Dey <sodey@rbbn.com>
---
v2:
* Simplied the commit log.
* goto err; is not required as it has only one more return path
and there is no cleanup required apart from just return err.
* Updated the comment start from /* -> /**
* Changed the error log in case vlan strip command fails.
---
 drivers/net/i40e/i40e_ethdev_vf.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index c26b036..d3dbcb5 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1078,8 +1078,19 @@ i40evf_add_vlan(struct rte_eth_dev *dev, uint16_t vlanid)
 	args.out_buffer = vf->aq_resp;
 	args.out_size = I40E_AQ_BUF_SZ;
 	err = i40evf_execute_vf_cmd(dev, &args);
-	if (err)
+	if (err) {
 		PMD_DRV_LOG(ERR, "fail to execute command OP_ADD_VLAN");
+		return err;
+	}
+	/**
+	 * In linux kernel driver on receiving ADD_VLAN it enables
+	 * VLAN_STRIP by default. So reconfigure the vlan_offload
+	 * as it was done by the app earlier.
+	 */
+	err = i40evf_vlan_offload_set(dev, ETH_VLAN_STRIP_MASK);
+	if (err)
+		PMD_DRV_LOG(ERR, "fail to set vlan_strip "
+			"as a part of OP_ADD_VLAN");
 
 	return err;
 }
-- 
2.9.3.windows.1


  parent reply	other threads:[~2020-12-12 13:05 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-09 17:55 [dpdk-dev] [PATCH] " Souvik Dey
2020-12-11  3:07 ` Guo, Jia
2020-12-12 12:26   ` Dey, Souvik
2020-12-12 13:05 ` Souvik Dey [this message]
2020-12-15  2:24   ` [dpdk-dev] [PATCH v2] " Guo, Jia
2020-12-15 13:16     ` Dey, Souvik
2020-12-15 13:30       ` Dey, Souvik
2020-12-15 13:28   ` [dpdk-dev] [PATCH v3] " Souvik Dey
2020-12-16  2:09     ` Guo, Jia
2020-12-23 10:51       ` Zhang, Qi Z
2021-01-04 16:42       ` Ferruh Yigit
2021-01-05  3:07         ` Guo, Jia
2021-01-05 10:45           ` Ferruh Yigit
2020-12-12 12:51 [dpdk-dev] [PATCH v2] " Souvik Dey

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