From: Yishai Hadas <yishaih@mellanox.com>
Date: Thu, 20 Sep 2018 21:39:25 +0300
Subject: IB/mlx5: Set uid as part of MCG commands
Patch-mainline: v4.20-rc1
Git-commit: 539ec982763a8f041761056a5fb9e09cdb6b3dcc
References: bsc#1103991 FATE#326007

Set uid as part of MCG commands so that the firmware can manage the
MCG object in a secured way.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
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/cmd.c  |   30 ++++++++++++++++++++++++++++++
 drivers/infiniband/hw/mlx5/cmd.h  |    4 ++++
 drivers/infiniband/hw/mlx5/main.c |   11 +++++++++--
 3 files changed, 43 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/hw/mlx5/cmd.c
+++ b/drivers/infiniband/hw/mlx5/cmd.c
@@ -208,3 +208,33 @@ void mlx5_cmd_dealloc_pd(struct mlx5_cor
 	MLX5_SET(dealloc_pd_in, in, uid, uid);
 	mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 }
+
+int mlx5_cmd_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid,
+			u32 qpn, u16 uid)
+{
+	u32 out[MLX5_ST_SZ_DW(attach_to_mcg_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(attach_to_mcg_in)]   = {};
+	void *gid;
+
+	MLX5_SET(attach_to_mcg_in, in, opcode, MLX5_CMD_OP_ATTACH_TO_MCG);
+	MLX5_SET(attach_to_mcg_in, in, qpn, qpn);
+	MLX5_SET(attach_to_mcg_in, in, uid, uid);
+	gid = MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid);
+	memcpy(gid, mgid, sizeof(*mgid));
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
+
+int mlx5_cmd_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid,
+			u32 qpn, u16 uid)
+{
+	u32 out[MLX5_ST_SZ_DW(detach_from_mcg_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(detach_from_mcg_in)]   = {};
+	void *gid;
+
+	MLX5_SET(detach_from_mcg_in, in, opcode, MLX5_CMD_OP_DETACH_FROM_MCG);
+	MLX5_SET(detach_from_mcg_in, in, qpn, qpn);
+	MLX5_SET(detach_from_mcg_in, in, uid, uid);
+	gid = MLX5_ADDR_OF(detach_from_mcg_in, in, multicast_gid);
+	memcpy(gid, mgid, sizeof(*mgid));
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
--- a/drivers/infiniband/hw/mlx5/cmd.h
+++ b/drivers/infiniband/hw/mlx5/cmd.h
@@ -48,4 +48,8 @@ int mlx5_cmd_alloc_memic(struct mlx5_mem
 			 u64 length, u32 alignment);
 int mlx5_cmd_dealloc_memic(struct mlx5_memic *memic, u64 addr, u64 length);
 void mlx5_cmd_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn, u16 uid);
+int mlx5_cmd_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid,
+			u32 qpn, u16 uid);
+int mlx5_cmd_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid,
+			u32 qpn, u16 uid);
 #endif /* MLX5_IB_CMD_H */
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -4036,13 +4036,17 @@ static int mlx5_ib_mcg_attach(struct ib_
 	struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
 	struct mlx5_ib_qp *mqp = to_mqp(ibqp);
 	int err;
+	u16 uid;
+
+	uid = ibqp->pd ?
+		to_mpd(ibqp->pd)->uid : 0;
 
 	if (mqp->flags & MLX5_IB_QP_UNDERLAY) {
 		mlx5_ib_dbg(dev, "Attaching a multi cast group to underlay QP is not supported\n");
 		return -EOPNOTSUPP;
 	}
 
-	err = mlx5_core_attach_mcg(dev->mdev, gid, ibqp->qp_num);
+	err = mlx5_cmd_attach_mcg(dev->mdev, gid, ibqp->qp_num, uid);
 	if (err)
 		mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
 			     ibqp->qp_num, gid->raw);
@@ -4054,8 +4058,11 @@ static int mlx5_ib_mcg_detach(struct ib_
 {
 	struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
 	int err;
+	u16 uid;
 
-	err = mlx5_core_detach_mcg(dev->mdev, gid, ibqp->qp_num);
+	uid = ibqp->pd ?
+		to_mpd(ibqp->pd)->uid : 0;
+	err = mlx5_cmd_detach_mcg(dev->mdev, gid, ibqp->qp_num, uid);
 	if (err)
 		mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
 			     ibqp->qp_num, gid->raw);