** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1758662
Title:
[Bionic] mlx4 ETH - mlnx_qos failed when set some TC to vendor
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Bionic:
Fix Committed
Bug description:
reproduce:
[root@reg-l-vrt-41018-010 ~]# /usr/bin/mlnx_qos -i ens8 -s
vendor,ets,vendor,ets,ets,strict,ets,vendor -t 0,36,0,55,4,0,5,0
Netlink error: Bad value. see dmesg.
[root@reg-l-vrt-41018-010 ~]# dmesg
[69718.992299] mlx4_en: ens8: TC[0]: Not supported TSA: 255
There is a upstream commit that fix the issue, please add it to bionic
commit a42b63c1ac1986f17f71bc91a6b0aaa14d4dae71
Author: Moni Shoua <[email protected]>
Date: Thu Dec 28 16:26:11 2017 +0200
net/mlx4_en: Change default QoS settings
Change the default mapping between TC and TCG as follows:
Prio | TC/TCG
| from to
| (set by FW) (set by SW)
---------+-----------------------------------
0 | 0/0 0/7
1 | 1/0 0/6
2 | 2/0 0/5
3 | 3/0 0/4
4 | 4/0 0/3
5 | 5/0 0/2
6 | 6/0 0/1
7 | 7/0 0/0
These new settings cause that a pause frame for any prio stops
traffic for all prios.
Fixes: 564c274c3df0 ("net/mlx4_en: DCB QoS support")
Signed-off-by: Moni Shoua <[email protected]>
Signed-off-by: Maor Gottlieb <[email protected]>
Signed-off-by: Tariq Toukan <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
index 5f41dc9..1a0c3bf8 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
@@ -310,6 +310,7 @@ static int mlx4_en_ets_validate(struct mlx4_en_priv
*priv, struct ieee_ets *ets)
}
switch (ets->tc_tsa[i]) {
+ case IEEE_8021QAZ_TSA_VENDOR:
case IEEE_8021QAZ_TSA_STRICT:
break;
case IEEE_8021QAZ_TSA_ETS:
@@ -347,6 +348,10 @@ static int mlx4_en_config_port_scheduler(struct
mlx4_en_priv *priv,
/* higher TC means higher priority => lower pg */
for (i = IEEE_8021QAZ_MAX_TCS - 1; i >= 0; i--) {
switch (ets->tc_tsa[i]) {
+ case IEEE_8021QAZ_TSA_VENDOR:
+ pg[i] = MLX4_EN_TC_VENDOR;
+ tc_tx_bw[i] = MLX4_EN_BW_MAX;
+ break;
case IEEE_8021QAZ_TSA_STRICT:
pg[i] = num_strict++;
tc_tx_bw[i] = MLX4_EN_BW_MAX;
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 99051a2..21bc17f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -3336,6 +3336,13 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int
port,
priv->msg_enable = MLX4_EN_MSG_LEVEL;
#ifdef CONFIG_MLX4_EN_DCB
if (!mlx4_is_slave(priv->mdev->dev)) {
+ u8 prio;
+
+ for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
+ priv->ets.prio_tc[prio] = prio;
+ priv->ets.tc_tsa[prio] = IEEE_8021QAZ_TSA_VENDOR;
+ }
+
priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
DCB_CAP_DCBX_VER_IEEE;
priv->flags |= MLX4_EN_DCB_ENABLED;
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 2b72677..7db3d0d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -479,6 +479,7 @@ struct mlx4_en_frag_info {
#define MLX4_EN_BW_MIN 1
#define MLX4_EN_BW_MAX 100 /* Utilize 100% of the line */
+#define MLX4_EN_TC_VENDOR 0
#define MLX4_EN_TC_ETS 7
enum dcb_pfc_type {
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