From: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Limit the number of PSV's created through devx to 1, to create a symmetry
between create/destroy cmds. In the kernel, one can create up to 4 PSV's
using CREATE_PSV cmd but the destruction is one by one. Add a protection
for this a-symmetric definition for devx.
Signed-off-by: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/devx.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c
index ec4370f99381..a527cf7f01ac 100644
--- a/drivers/infiniband/hw/mlx5/devx.c
+++ b/drivers/infiniband/hw/mlx5/devx.c
@@ -776,6 +776,14 @@ static bool devx_is_obj_create_cmd(const void *in, u16 *opcode)
return true;
return false;
}
+ case MLX5_CMD_OP_CREATE_PSV:
+ {
+ u8 num_psv = MLX5_GET(create_psv_in, in, num_psv);
+
+ if (num_psv == 1)
+ return true;
+ return false;
+ }
default:
return false;
}
@@ -1215,6 +1223,12 @@ static void devx_obj_build_destroy_cmd(void *in, void *out, void *din,
case MLX5_CMD_OP_ALLOC_XRCD:
MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
break;
+ case MLX5_CMD_OP_CREATE_PSV:
+ MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
+ MLX5_CMD_OP_DESTROY_PSV);
+ MLX5_SET(destroy_psv_in, din, psvn,
+ MLX5_GET(create_psv_out, out, psv0_index));
+ break;
default:
/* The entry must match to one of the devx_is_obj_create_cmd */
WARN_ON(true);
--
2.20.1
