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Current code uses many different types when dealing with a port of a RDMA device: u8, unsigned int and u32. Switch to u32 to clean up the logic. This allows us to make (at least) the core view consistent and use the same type. Unfortunately not all places can be converted. Many uverbs functions expect port to be u8 so keep those places in order not to break UAPIs. HW/Spec defined values must also not be changed. With the switch to u32 we now can support devices with more than 255 ports. U32_MAX is reserved to make control logic a bit easier to deal with. As a device with U32_MAX ports probably isn't going to happen any time soon this seems like a non issue. When a device with more than 255 ports is created uverbs will report the RDMA device as having 255 ports as this is the max currently supported. The verbs interface is not changed yet because the IBTA spec limits the port size in too many places to be u8 and all applications that relies in verbs won't be able to cope with this change. At this stage, we are extending the interfaces that are using vendor channel solely Once the limitation is lifted mlx5 in switchdev mode will be able to have thousands of SFs created by the device. As the only instance of an RDMA device that reports more than 255 ports will be a representor device and it exposes itself as a RAW Ethernet only device CM/MAD/IPoIB and other ULPs aren't effected by this change and their sysfs/interfaces that are exposes to userspace can remain unchanged. While here cleanup some alignment issues and remove unneeded sanity checks (mainly in rdmavt), Link: https://lore.kernel.org/r/20210301070420.439400-1-leon@kernel.org Signed-off-by: Mark Bloch <mbloch@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
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*/
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#ifndef __MLX5_IB_REP_H__
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#define __MLX5_IB_REP_H__
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#include <linux/mlx5/eswitch.h>
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#include "mlx5_ib.h"
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extern const struct mlx5_ib_profile raw_eth_profile;
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#ifdef CONFIG_MLX5_ESWITCH
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int mlx5r_rep_init(void);
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void mlx5r_rep_cleanup(void);
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struct mlx5_flow_handle *create_flow_rule_vport_sq(struct mlx5_ib_dev *dev,
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struct mlx5_ib_sq *sq,
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u32 port);
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struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw,
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u16 vport_num);
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#else /* CONFIG_MLX5_ESWITCH */
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static inline int mlx5r_rep_init(void) { return 0; }
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static inline void mlx5r_rep_cleanup(void) {}
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static inline
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struct mlx5_flow_handle *create_flow_rule_vport_sq(struct mlx5_ib_dev *dev,
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struct mlx5_ib_sq *sq,
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u32 port)
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{
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return NULL;
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}
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static inline
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struct net_device *mlx5_ib_get_rep_netdev(struct mlx5_eswitch *esw,
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u16 vport_num)
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{
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return NULL;
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}
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#endif
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#endif /* __MLX5_IB_REP_H__ */
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