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From: "Guo, Jia" <jia.guo@intel.com>
To: Souvik Dey <sodey@rbbn.com>,
	"Xing, Beilei" <beilei.xing@intel.com>,
	"Zhang, Qi Z" <qi.z.zhang@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v3] net/i40e: issue with ADD VLAN from Guest
Date: Wed, 16 Dec 2020 02:09:38 +0000
Message-ID: <04670cb0b85b4b1c90ae264639372754@intel.com> (raw)
In-Reply-To: <20201215132815.15200-1-sodey@rbbn.com>

Acked-by: Jeff Guo <jia.guo@intel.com<mailto:jia.guo@intel.com>>

From: Souvik Dey <sodey@rbbn.com>
Sent: Tuesday, December 15, 2020 9:28 PM
To: Xing, Beilei <beilei.xing@intel.com>; Guo, Jia <jia.guo@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>
Cc: dev@dpdk.org; Souvik Dey <sodey@rbbn.com>
Subject: [PATCH v3] net/i40e: issue with ADD VLAN from Guest

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<mailto:sodey@rbbn.com>>
---
v3:
* Changed the error log in case vlan strip command fails
as per the latest comment.
---
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 | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index c26b036..2faee1d 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1078,8 +1078,18 @@ 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");

return err;
}
--
2.9.3.windows.1

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  reply	other threads:[~2020-12-16  2:09 UTC|newest]

Thread overview: 13+ 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 ` [dpdk-dev] [PATCH v2] " Souvik Dey
2020-12-15  2:24   ` 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 [this message]
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

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