IB/mlx4: Add iov directory in sysfs under the ib device

This directory is added only for the master -- slaves do not have it.

The sysfs iov directory is used to manage and examine the port P_Key
and guid paravirtualization.

Under iov/ports, the administrator may examine the gid and P_Key tables
as they are present in the device (and as are seen in the "network
view" presented to the SM).

Under the iov/<pci slot number> directories, the admin may map the
index numbers in the physical tables (as under iov/ports) to the
paravirtualized index numbers that guests see.

For example, if the administrator, for port 1 on guest 2 maps physical
pkey index 10 to virtual index 1, then that guest, whenever it uses
its pkey index 1, will actually be using the real pkey index 10.

Based on patch from Erez Shitrit <erezsh@mellanox.com>

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/infiniband/hw/mlx4/alias_GUID.c b/drivers/infiniband/hw/mlx4/alias_GUID.c
index ef6d356927c3..0fcd5cd6f3ee 100644
--- a/drivers/infiniband/hw/mlx4/alias_GUID.c
+++ b/drivers/infiniband/hw/mlx4/alias_GUID.c
@@ -113,7 +113,7 @@ static __be64 get_cached_alias_guid(struct mlx4_ib_dev *dev, int port, int index
 }
 
 
-static ib_sa_comp_mask get_aguid_comp_mask_from_ix(int index)
+ib_sa_comp_mask mlx4_ib_get_aguid_comp_mask_from_ix(int index)
 {
 	return IB_SA_COMP_MASK(4 + index);
 }
@@ -259,7 +259,7 @@ static void aliasguid_query_handler(int status,
 				/* Mark the record as not assigned, and let it
 				 * be sent again in the next work sched.*/
 				rec->status = MLX4_GUID_INFO_STATUS_IDLE;
-				rec->guid_indexes |= get_aguid_comp_mask_from_ix(i);
+				rec->guid_indexes |= mlx4_ib_get_aguid_comp_mask_from_ix(i);
 			}
 		} else {
 		       /* properly assigned record. */
@@ -337,7 +337,7 @@ static void invalidate_guid_record(struct mlx4_ib_dev *dev, u8 port, int index)
 		    MLX4_GUID_NONE_ASSIGN == dev->sriov.alias_guid.
 		    ports_guid[port - 1].all_rec_per_port[index].ownership)
 			continue;
-		comp_mask |= get_aguid_comp_mask_from_ix(i);
+		comp_mask |= mlx4_ib_get_aguid_comp_mask_from_ix(i);
 	}
 	dev->sriov.alias_guid.ports_guid[port - 1].
 		all_rec_per_port[index].guid_indexes = comp_mask;