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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>
Date: Tue, 15 Dec 2020 08:28:15 -0500
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Subject: [dpdk-dev] [PATCH v3] net/i40e: issue with ADD VLAN from Guest
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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>
---
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_ethd=
ev_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 vl=
anid)
=09args.out_buffer =3D vf->aq_resp;
=09args.out_size =3D I40E_AQ_BUF_SZ;
=09err =3D i40evf_execute_vf_cmd(dev, &args);
-=09if (err)
+=09if (err) {
=09=09PMD_DRV_LOG(ERR, "fail to execute command OP_ADD_VLAN");
+=09=09return err;
+=09}
+=09/**
+=09 * In linux kernel driver on receiving ADD_VLAN it enables
+=09 * VLAN_STRIP by default. So reconfigure the vlan_offload
+=09 * as it was done by the app earlier.
+=09 */
+=09err =3D i40evf_vlan_offload_set(dev, ETH_VLAN_STRIP_MASK);
+=09if (err)
+=09=09PMD_DRV_LOG(ERR, "fail to set vlan_strip");
=20
=09return err;
}
--=20
2.9.3.windows.1