[PATCH RFC 3/4] ib/mlx4: get extended active speed from port info

mlx4_ib: Add extended link speeds support

This patch implements IB spec extension of the PortInfo attribute:

Component  : LinkSpeedExtActive
Used By    : (All X's except base SP0)
Access     : RO
Length     : 4
Offset     : 496
Description: If PortInfo:CapabilityMask.IsExtendedSpeedsSupported
                    (according to IBTA RefID 4720), currently
            active extended link speed, indicated as follows:
0: No extended speed active
1: 14.0625 Gbps (FDR)
2: 25.78125 Gbps (EDR)
3-15: Reserved

Signed-off-by: Vladimir Sokolovsky <vlad-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
Signed-off-by: Marcel Apfelbaum <redacted>
Reviewed-by: Hal Rosenstock <hal-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
drivers/infiniband/hw/mlx4/main.c |    2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/drivers/infiniband/hw/mlx4/main.c
===================================================================

--- a/drivers/infiniband/hw/mlx4/main.c              2011-09-14

13:49:58.000000000 +0300

+++ b/drivers/infiniband/hw/mlx4/main.c           2011-09-14

13:50:52.408510900 +0300

@@ -202,7 +202,7 @@ static int ib_link_query_port(struct ib_

              props->subnet_timeout               = out_mad->data[51] & 0x1f;
              props->max_vl_num     = out_mad->data[37] >> 4;
              props->init_type_reply = out_mad->data[41] >> 4;
-
+             props->ext_active_speed = out_mad->data[62] >> 4;
              return 0;
}
--
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