net/mlx5: Set uid as part of CQ commands

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

The firmware should mark this CQ with the given uid so that it can
be used later on only by objects with the same uid.

Upon DEVX flows that use this CQ (e.g. create QP command), the
pointed CQ must have the same uid as of the issuer uid command.

When a command is issued with uid=0 it means that the issuer of the
command is trusted (i.e. kernel), in that case any pointed object
can be used regardless of its uid.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cq.c b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
index a417912..4b85abb 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/cq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cq.c
@@ -109,6 +109,7 @@ int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
        cq->cons_index = 0;
        cq->arm_sn     = 0;
        cq->eq         = eq;
+       cq->uid = MLX5_GET(create_cq_in, in, uid);
        refcount_set(&cq->refcount, 1);
        init_completion(&cq->free);
        if (!cq->comp)
@@ -144,6 +145,7 @@ err_cmd:
        memset(dout, 0, sizeof(dout));
        MLX5_SET(destroy_cq_in, din, opcode, MLX5_CMD_OP_DESTROY_CQ);
        MLX5_SET(destroy_cq_in, din, cqn, cq->cqn);
+       MLX5_SET(destroy_cq_in, din, uid, cq->uid);
        mlx5_cmd_exec(dev, din, sizeof(din), dout, sizeof(dout));
        return err;
 }
@@ -165,6 +167,7 @@ int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
 
        MLX5_SET(destroy_cq_in, in, opcode, MLX5_CMD_OP_DESTROY_CQ);
        MLX5_SET(destroy_cq_in, in, cqn, cq->cqn);
+       MLX5_SET(destroy_cq_in, in, uid, cq->uid);
        err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
        if (err)
                return err;
@@ -196,6 +199,7 @@ int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
        u32 out[MLX5_ST_SZ_DW(modify_cq_out)] = {0};
 
        MLX5_SET(modify_cq_in, in, opcode, MLX5_CMD_OP_MODIFY_CQ);
+       MLX5_SET(modify_cq_in, in, uid, cq->uid);
        return mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
 }
 EXPORT_SYMBOL(mlx5_core_modify_cq);

diff --git a/include/linux/mlx5/cq.h b/include/linux/mlx5/cq.h
index 0ef6138..31a7505 100644 (file)
--- a/include/linux/mlx5/cq.h
+++ b/include/linux/mlx5/cq.h
@@ -61,6 +61,7 @@ struct mlx5_core_cq {
        int                     reset_notify_added;
        struct list_head        reset_notify;
        struct mlx5_eq          *eq;
+       u16 uid;
 };
 
 

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 4c7a1d2..1a412b3 100644 (file)
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -5629,7 +5629,7 @@ enum {
 
 struct mlx5_ifc_modify_cq_in_bits {
        u8         opcode[0x10];
-       u8         reserved_at_10[0x10];
+       u8         uid[0x10];
 
        u8         reserved_at_20[0x10];
        u8         op_mod[0x10];
@@ -6404,7 +6404,7 @@ struct mlx5_ifc_destroy_cq_out_bits {
 
 struct mlx5_ifc_destroy_cq_in_bits {
        u8         opcode[0x10];
-       u8         reserved_at_10[0x10];
+       u8         uid[0x10];
 
        u8         reserved_at_20[0x10];
        u8         op_mod[0x10];
@@ -7164,7 +7164,7 @@ struct mlx5_ifc_create_cq_out_bits {
 
 struct mlx5_ifc_create_cq_in_bits {
        u8         opcode[0x10];
-       u8         reserved_at_10[0x10];
+       u8         uid[0x10];
 
        u8         reserved_at_20[0x10];
        u8         op_mod[0x10];