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 <[email protected]>
Signed-off-by: Tomer Tayar <[email protected]>
---
drivers/net/ethernet/qlogic/qed/qed_dcbx.c | 9 ++++++++-
drivers/net/ethernet/qlogic/qed/qed_dcbx.h | 1 +
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
index 6bb76e6..d53f33c 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
@@ -190,6 +190,7 @@ static bool qed_dcbx_roce_v2_tlv(u32 app_info_bitmap, u16
proto_id, bool ieee)
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 @@ static bool qed_dcbx_roce_v2_tlv(u32 app_info_bitmap, u16
proto_id, bool ieee)
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 @@ static bool qed_dcbx_roce_v2_tlv(u32 app_info_bitmap, u16
proto_id, bool ieee)
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 */
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dcbx.h
b/drivers/net/ethernet/qlogic/qed/qed_dcbx.h
index a4d688c..01f253e 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.h
@@ -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
--
1.8.3.1
