mlxsw: spectrum: Prevent force of 56G
[ Upstream commit 275e928f19117d22f6d26dee94548baf4041b773 ]
Force of 56G is not supported by hardware in Ethernet devices. This
configuration fails with a bad parameter error from firmware.
Add check of this case. Instead of trying to set 56G with autoneg off,
return a meaningful error.
Fixes: 56ade8fe3f
("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 4 additions and 0 deletions
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@ -2488,6 +2488,10 @@ mlxsw_sp_port_set_link_ksettings(struct net_device *dev,
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mlxsw_reg_ptys_eth_unpack(ptys_pl, ð_proto_cap, NULL, NULL);
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autoneg = cmd->base.autoneg == AUTONEG_ENABLE;
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if (!autoneg && cmd->base.speed == SPEED_56000) {
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netdev_err(dev, "56G not supported with autoneg off\n");
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return -EINVAL;
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}
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eth_proto_new = autoneg ?
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mlxsw_sp_to_ptys_advert_link(cmd) :
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mlxsw_sp_to_ptys_speed(cmd->base.speed);
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