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net/mlx5_core: Add transport domain alloc/dealloc support

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Each transport object, namely TIR and TIS, must have a transport domain
number (TDN) identifier.

The driver wrongly assumed that it is OK to use TDN=0 without explicit
TDN allocation from the device.

The TDN will also be used for isolating different processes once user
mode Ethernet will be supported.

Signed-off-by: Achiad Shochat <achiad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Achiad Shochat 2015-06-11 14:47:32 +03:00 committed by David S. Miller
parent 12be4b2190
commit 56508b5013
2 changed files with 37 additions and 0 deletions
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35
drivers/net/ethernet/mellanox/mlx5/core/transobj.c
View File

@ -34,6 +34,41 @@
#include "mlx5_core.h"
#include "transobj.h"
int mlx5_alloc_transport_domain(struct mlx5_core_dev *dev, u32 *tdn)
{
u32 in[MLX5_ST_SZ_DW(alloc_transport_domain_in)];
u32 out[MLX5_ST_SZ_DW(alloc_transport_domain_out)];
int err;
memset(in, 0, sizeof(in));
memset(out, 0, sizeof(out));
MLX5_SET(alloc_transport_domain_in, in, opcode,
MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN);
err = mlx5_cmd_exec_check_status(dev, in, sizeof(in), out, sizeof(out));
if (!err)
*tdn = MLX5_GET(alloc_transport_domain_out, out,
transport_domain);
return err;
}
void mlx5_dealloc_transport_domain(struct mlx5_core_dev *dev, u32 tdn)
{
u32 in[MLX5_ST_SZ_DW(dealloc_transport_domain_in)];
u32 out[MLX5_ST_SZ_DW(dealloc_transport_domain_out)];
memset(in, 0, sizeof(in));
memset(out, 0, sizeof(out));
MLX5_SET(dealloc_transport_domain_in, in, opcode,
MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN);
MLX5_SET(dealloc_transport_domain_in, in, transport_domain, tdn);
mlx5_cmd_exec_check_status(dev, in, sizeof(in), out, sizeof(out));
}
int mlx5_core_create_rq(struct mlx5_core_dev *dev, u32 *in, int inlen, u32 *rqn)
{
u32 out[MLX5_ST_SZ_DW(create_rq_out)];

2
drivers/net/ethernet/mellanox/mlx5/core/transobj.h
View File

@ -33,6 +33,8 @@
#ifndef __TRANSOBJ_H__
#define __TRANSOBJ_H__
int mlx5_alloc_transport_domain(struct mlx5_core_dev *dev, u32 *tdn);
void mlx5_dealloc_transport_domain(struct mlx5_core_dev *dev, u32 tdn);
int mlx5_core_create_rq(struct mlx5_core_dev *dev, u32 *in, int inlen,
u32 *rqn);
int mlx5_core_modify_rq(struct mlx5_core_dev *dev, u32 rqn, u32 *in, int inlen);