| Jiri Pirko | bfcd3a4 | 2016-02-26 17:32:23 +0100 | [diff] [blame] | 1 | /* |
| 2 | * include/net/devlink.h - Network physical device Netlink interface |
| 3 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. |
| 4 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | */ |
| 11 | #ifndef _NET_DEVLINK_H_ |
| 12 | #define _NET_DEVLINK_H_ |
| 13 | |
| 14 | #include <linux/device.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/gfp.h> |
| 17 | #include <linux/list.h> |
| 18 | #include <linux/netdevice.h> |
| 19 | #include <net/net_namespace.h> |
| 20 | #include <uapi/linux/devlink.h> |
| 21 | |
| 22 | struct devlink_ops; |
| 23 | |
| 24 | struct devlink { |
| 25 | struct list_head list; |
| 26 | struct list_head port_list; |
| 27 | const struct devlink_ops *ops; |
| 28 | struct device *dev; |
| 29 | possible_net_t _net; |
| 30 | char priv[0] __aligned(NETDEV_ALIGN); |
| 31 | }; |
| 32 | |
| 33 | struct devlink_port { |
| 34 | struct list_head list; |
| 35 | struct devlink *devlink; |
| 36 | unsigned index; |
| 37 | bool registered; |
| 38 | enum devlink_port_type type; |
| 39 | enum devlink_port_type desired_type; |
| 40 | void *type_dev; |
| 41 | bool split; |
| 42 | u32 split_group; |
| 43 | }; |
| 44 | |
| 45 | struct devlink_ops { |
| 46 | size_t priv_size; |
| 47 | int (*port_type_set)(struct devlink_port *devlink_port, |
| 48 | enum devlink_port_type port_type); |
| 49 | int (*port_split)(struct devlink *devlink, unsigned int port_index, |
| 50 | unsigned int count); |
| 51 | int (*port_unsplit)(struct devlink *devlink, unsigned int port_index); |
| 52 | }; |
| 53 | |
| 54 | static inline void *devlink_priv(struct devlink *devlink) |
| 55 | { |
| 56 | BUG_ON(!devlink); |
| 57 | return &devlink->priv; |
| 58 | } |
| 59 | |
| 60 | static inline struct devlink *priv_to_devlink(void *priv) |
| 61 | { |
| 62 | BUG_ON(!priv); |
| 63 | return container_of(priv, struct devlink, priv); |
| 64 | } |
| 65 | |
| 66 | struct ib_device; |
| 67 | |
| 68 | #if IS_ENABLED(CONFIG_NET_DEVLINK) |
| 69 | |
| 70 | struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size); |
| 71 | int devlink_register(struct devlink *devlink, struct device *dev); |
| 72 | void devlink_unregister(struct devlink *devlink); |
| 73 | void devlink_free(struct devlink *devlink); |
| 74 | int devlink_port_register(struct devlink *devlink, |
| 75 | struct devlink_port *devlink_port, |
| 76 | unsigned int port_index); |
| 77 | void devlink_port_unregister(struct devlink_port *devlink_port); |
| 78 | void devlink_port_type_eth_set(struct devlink_port *devlink_port, |
| 79 | struct net_device *netdev); |
| 80 | void devlink_port_type_ib_set(struct devlink_port *devlink_port, |
| 81 | struct ib_device *ibdev); |
| 82 | void devlink_port_type_clear(struct devlink_port *devlink_port); |
| 83 | void devlink_port_split_set(struct devlink_port *devlink_port, |
| 84 | u32 split_group); |
| 85 | |
| 86 | #else |
| 87 | |
| 88 | static inline struct devlink *devlink_alloc(const struct devlink_ops *ops, |
| 89 | size_t priv_size) |
| 90 | { |
| 91 | return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL); |
| 92 | } |
| 93 | |
| 94 | static inline int devlink_register(struct devlink *devlink, struct device *dev) |
| 95 | { |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | static inline void devlink_unregister(struct devlink *devlink) |
| 100 | { |
| 101 | } |
| 102 | |
| 103 | static inline void devlink_free(struct devlink *devlink) |
| 104 | { |
| 105 | kfree(devlink); |
| 106 | } |
| 107 | |
| 108 | static inline int devlink_port_register(struct devlink *devlink, |
| 109 | struct devlink_port *devlink_port, |
| 110 | unsigned int port_index) |
| 111 | { |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | static inline void devlink_port_unregister(struct devlink_port *devlink_port) |
| 116 | { |
| 117 | } |
| 118 | |
| 119 | static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port, |
| 120 | struct net_device *netdev) |
| 121 | { |
| 122 | } |
| 123 | |
| 124 | static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port, |
| 125 | struct ib_device *ibdev) |
| 126 | { |
| 127 | } |
| 128 | |
| 129 | static inline void devlink_port_type_clear(struct devlink_port *devlink_port) |
| 130 | { |
| 131 | } |
| 132 | |
| 133 | static inline void devlink_port_split_set(struct devlink_port *devlink_port, |
| 134 | u32 split_group) |
| 135 | { |
| 136 | } |
| 137 | |
| 138 | #endif |
| 139 | |
| 140 | #endif /* _NET_DEVLINK_H_ */ |