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Date:   Sun, 15 Mar 2020 10:07:35 +0200
From:   Ido Schimmel <>
Cc:,,,, Ido Schimmel <>
Subject: [PATCH net] mlxsw: reg: Increase register field length to 31 bits

From: Ido Schimmel <>

The cited commit set a value of 2^31-1 in order to "disable" the shaper
on a given a port. However, the length of the maximum shaper rate field
was not updated from 28 bits to 31 bits, which means ports are still
limited to ~268Gbps despite supporting speeds of 400Gbps.

Fix this by increasing the field's length.

Fixes: 92afbfedb77d ("mlxsw: reg: Increase MLXSW_REG_QEEC_MAS_DIS")
Signed-off-by: Ido Schimmel <>
Reviewed-by: Jiri Pirko <>
Reviewed-by: Petr Machata <>
 drivers/net/ethernet/mellanox/mlxsw/reg.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h
index dd6685156396..e05d1d1be2fd 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/reg.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h
@@ -3572,7 +3572,7 @@ MLXSW_ITEM32(reg, qeec, mase, 0x10, 31, 1);
  * When in bytes mode, value is specified in units of 1000bps.
  * Access: RW
-MLXSW_ITEM32(reg, qeec, max_shaper_rate, 0x10, 0, 28);
+MLXSW_ITEM32(reg, qeec, max_shaper_rate, 0x10, 0, 31);
 /* reg_qeec_de
  * DWRR configuration enable. Enables configuration of the dwrr and

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