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IB/mlx4: Don't return an invalid speed when a port is down
When the IB port is down, the active_speed value returned by the MAD_IFC command is seven (7) which isn't among the defined IB speeds in enum ib_port_speed, and this invalid speed value is passed up to higher layers or applications who do port query. Fix that by setting the speed to be SDR -- the lowest possible -- when the port is down. Signed-off-by: Roland Dreier <roland@purestorage.com>
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@ -253,6 +253,11 @@ static int ib_link_query_port(struct ib_device *ibdev, u8 port,
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if (out_mad->data[15] & 0x1)
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props->active_speed = IB_SPEED_FDR10;
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}
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/* Avoid wrong speed value returned by FW if the IB link is down. */
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if (props->state == IB_PORT_DOWN)
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props->active_speed = IB_SPEED_SDR;
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out:
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kfree(in_mad);
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kfree(out_mad);
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