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 struct list_head sb_list; 28 const struct devlink_ops *ops; 29 struct device *dev; 30 possible_net_t _net; 31 char priv[0] __aligned(NETDEV_ALIGN); 32 }; 33 34 struct devlink_port { 35 struct list_head list; 36 struct devlink *devlink; 37 unsigned index; 38 bool registered; 39 enum devlink_port_type type; 40 enum devlink_port_type desired_type; 41 void *type_dev; 42 bool split; 43 u32 split_group; 44 }; 45 46 struct devlink_sb_pool_info { 47 enum devlink_sb_pool_type pool_type; 48 u32 size; 49 enum devlink_sb_threshold_type threshold_type; 50 }; 51 52 struct devlink_ops { 53 int (*port_type_set)(struct devlink_port *devlink_port, 54 enum devlink_port_type port_type); 55 int (*port_split)(struct devlink *devlink, unsigned int port_index, 56 unsigned int count); 57 int (*port_unsplit)(struct devlink *devlink, unsigned int port_index); 58 int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index, 59 u16 pool_index, 60 struct devlink_sb_pool_info *pool_info); 61 int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index, 62 u16 pool_index, u32 size, 63 enum devlink_sb_threshold_type threshold_type); 64 int (*sb_port_pool_get)(struct devlink_port *devlink_port, 65 unsigned int sb_index, u16 pool_index, 66 u32 *p_threshold); 67 int (*sb_port_pool_set)(struct devlink_port *devlink_port, 68 unsigned int sb_index, u16 pool_index, 69 u32 threshold); 70 int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port, 71 unsigned int sb_index, 72 u16 tc_index, 73 enum devlink_sb_pool_type pool_type, 74 u16 *p_pool_index, u32 *p_threshold); 75 int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port, 76 unsigned int sb_index, 77 u16 tc_index, 78 enum devlink_sb_pool_type pool_type, 79 u16 pool_index, u32 threshold); 80 int (*sb_occ_snapshot)(struct devlink *devlink, 81 unsigned int sb_index); 82 int (*sb_occ_max_clear)(struct devlink *devlink, 83 unsigned int sb_index); 84 int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port, 85 unsigned int sb_index, u16 pool_index, 86 u32 *p_cur, u32 *p_max); 87 int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port, 88 unsigned int sb_index, 89 u16 tc_index, 90 enum devlink_sb_pool_type pool_type, 91 u32 *p_cur, u32 *p_max); 92 93 int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode); 94 int (*eswitch_mode_set)(struct devlink *devlink, u16 mode); 95 }; 96 97 static inline void *devlink_priv(struct devlink *devlink) 98 { 99 BUG_ON(!devlink); 100 return &devlink->priv; 101 } 102 103 static inline struct devlink *priv_to_devlink(void *priv) 104 { 105 BUG_ON(!priv); 106 return container_of(priv, struct devlink, priv); 107 } 108 109 struct ib_device; 110 111 #if IS_ENABLED(CONFIG_NET_DEVLINK) 112 113 struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size); 114 int devlink_register(struct devlink *devlink, struct device *dev); 115 void devlink_unregister(struct devlink *devlink); 116 void devlink_free(struct devlink *devlink); 117 int devlink_port_register(struct devlink *devlink, 118 struct devlink_port *devlink_port, 119 unsigned int port_index); 120 void devlink_port_unregister(struct devlink_port *devlink_port); 121 void devlink_port_type_eth_set(struct devlink_port *devlink_port, 122 struct net_device *netdev); 123 void devlink_port_type_ib_set(struct devlink_port *devlink_port, 124 struct ib_device *ibdev); 125 void devlink_port_type_clear(struct devlink_port *devlink_port); 126 void devlink_port_split_set(struct devlink_port *devlink_port, 127 u32 split_group); 128 int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, 129 u32 size, u16 ingress_pools_count, 130 u16 egress_pools_count, u16 ingress_tc_count, 131 u16 egress_tc_count); 132 void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index); 133 134 #else 135 136 static inline struct devlink *devlink_alloc(const struct devlink_ops *ops, 137 size_t priv_size) 138 { 139 return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL); 140 } 141 142 static inline int devlink_register(struct devlink *devlink, struct device *dev) 143 { 144 return 0; 145 } 146 147 static inline void devlink_unregister(struct devlink *devlink) 148 { 149 } 150 151 static inline void devlink_free(struct devlink *devlink) 152 { 153 kfree(devlink); 154 } 155 156 static inline int devlink_port_register(struct devlink *devlink, 157 struct devlink_port *devlink_port, 158 unsigned int port_index) 159 { 160 return 0; 161 } 162 163 static inline void devlink_port_unregister(struct devlink_port *devlink_port) 164 { 165 } 166 167 static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port, 168 struct net_device *netdev) 169 { 170 } 171 172 static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port, 173 struct ib_device *ibdev) 174 { 175 } 176 177 static inline void devlink_port_type_clear(struct devlink_port *devlink_port) 178 { 179 } 180 181 static inline void devlink_port_split_set(struct devlink_port *devlink_port, 182 u32 split_group) 183 { 184 } 185 186 static inline int devlink_sb_register(struct devlink *devlink, 187 unsigned int sb_index, u32 size, 188 u16 ingress_pools_count, 189 u16 egress_pools_count, 190 u16 ingress_tc_count, 191 u16 egress_tc_count) 192 { 193 return 0; 194 } 195 196 static inline void devlink_sb_unregister(struct devlink *devlink, 197 unsigned int sb_index) 198 { 199 } 200 201 #endif 202 203 #endif /* _NET_DEVLINK_H_ */ 204