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OpenCloudOS-Kernel
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qed: Do not add VLAN 0 tag to untagged frames in multi-function mode. 

In certain multi-function switch dependent modes, firmware adds vlan tag 0
to the untagged frames. This leads to double tagging for the traffic
if the dcbx is enabled, which is not the desired behavior. To avoid this,
driver needs to set "dcb_dont_add_vlan0" flag.

Fixes: cac6f691 ("qed: Add support for Unified Fabric Port")
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sudarsana Reddy Kalluru 2018-09-19 21:59:11 -07:00 committed by David S. Miller
parent 50fdf60181
commit 0216da9413
2 changed files with 9 additions and 1 deletions
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9
drivers/net/ethernet/qlogic/qed/qed_dcbx.c
View File

@ -190,6 +190,7 @@ qed_dcbx_dp_protocol(struct qed_hwfn *p_hwfn, struct qed_dcbx_results *p_data)
static void
qed_dcbx_set_params(struct qed_dcbx_results *p_data,
struct qed_hwfn *p_hwfn,
struct qed_hw_info *p_info,
bool enable,
u8 prio,
@ -206,6 +207,11 @@ qed_dcbx_set_params(struct qed_dcbx_results *p_data,
else
p_data->arr[type].update = DONT_UPDATE_DCB_DSCP;
/* Do not add vlan tag 0 when DCB is enabled and port in UFP/OV mode */
if ((test_bit(QED_MF_8021Q_TAGGING, &p_hwfn->cdev->mf_bits) ||
test_bit(QED_MF_8021AD_TAGGING, &p_hwfn->cdev->mf_bits)))
p_data->arr[type].dont_add_vlan0 = true;
/* QM reconf data */
if (p_info->personality == personality)
qed_hw_info_set_offload_tc(p_info, tc);
@ -231,7 +237,7 @@ qed_dcbx_update_app_info(struct qed_dcbx_results *p_data,
personality = qed_dcbx_app_update[i].personality;
qed_dcbx_set_params(p_data, p_info, enable,
qed_dcbx_set_params(p_data, p_hwfn, p_info, enable,
prio, tc, type, personality);
}
}
@ -954,6 +960,7 @@ static void qed_dcbx_update_protocol_data(struct protocol_dcb_data *p_data,
p_data->dcb_enable_flag = p_src->arr[type].enable;
p_data->dcb_priority = p_src->arr[type].priority;
p_data->dcb_tc = p_src->arr[type].tc;
p_data->dcb_dont_add_vlan0 = p_src->arr[type].dont_add_vlan0;
}
/* Set pf update ramrod command params */

1
drivers/net/ethernet/qlogic/qed/qed_dcbx.h
View File

@ -55,6 +55,7 @@ struct qed_dcbx_app_data {
u8 update; /* Update indication */
u8 priority; /* Priority */
u8 tc; /* Traffic Class */
bool dont_add_vlan0; /* Do not insert a vlan tag with id 0 */
};
#define QED_DCBX_VERSION_DISABLED 0