From: Leon Romanovsky <leonro@mellanox.com>
Date: Sun, 25 Feb 2018 13:39:52 +0200
Subject: RDMA/mlx5: Refactor QP type check to be as early as possible
Patch-mainline: v4.17-rc1
Git-commit: 55de9a77daf3064e4f49296260d975885b574663
References: bsc#1103991 FATE#326007
Perform QP type check in one place and fail as early as possible.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/mlx5/qp.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -2959,18 +2959,16 @@ static int __mlx5_ib_modify_qp(struct ib
u16 op;
u8 tx_affinity = 0;
+ mlx5_st = to_mlx5_st(ibqp->qp_type == IB_QPT_DRIVER ?
+ qp->qp_sub_type : ibqp->qp_type);
+ if (mlx5_st < 0)
+ return -EINVAL;
+
context = kzalloc(sizeof(*context), GFP_KERNEL);
if (!context)
return -ENOMEM;
- err = to_mlx5_st(ibqp->qp_type == IB_QPT_DRIVER ?
- qp->qp_sub_type : ibqp->qp_type);
- if (err < 0) {
- mlx5_ib_dbg(dev, "unsupported qp type %d\n", ibqp->qp_type);
- goto out;
- }
-
- context->flags = cpu_to_be32(err << 16);
+ context->flags = cpu_to_be32(mlx5_st << 16);
if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
@@ -3124,10 +3122,6 @@ static int __mlx5_ib_modify_qp(struct ib
mlx5_cur = to_mlx5_state(cur_state);
mlx5_new = to_mlx5_state(new_state);
- mlx5_st = to_mlx5_st(ibqp->qp_type == IB_QPT_DRIVER ?
- qp->qp_sub_type : ibqp->qp_type);
- if (mlx5_st < 0)
- goto out;
if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
!optab[mlx5_cur][mlx5_new]) {