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      1 /*
      2  * include/uapi/linux/devlink.h - Network physical device Netlink interface
      3  * Copyright (c) 2016 Mellanox Technologies. All rights reserved.
      4  * Copyright (c) 2016 Jiri Pirko <jiri (at) 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 
     12 #ifndef _UAPI_LINUX_DEVLINK_H_
     13 #define _UAPI_LINUX_DEVLINK_H_
     14 
     15 #define DEVLINK_GENL_NAME "devlink"
     16 #define DEVLINK_GENL_VERSION 0x1
     17 #define DEVLINK_GENL_MCGRP_CONFIG_NAME "config"
     18 
     19 enum devlink_command {
     20 	/* don't change the order or add anything between, this is ABI! */
     21 	DEVLINK_CMD_UNSPEC,
     22 
     23 	DEVLINK_CMD_GET,		/* can dump */
     24 	DEVLINK_CMD_SET,
     25 	DEVLINK_CMD_NEW,
     26 	DEVLINK_CMD_DEL,
     27 
     28 	DEVLINK_CMD_PORT_GET,		/* can dump */
     29 	DEVLINK_CMD_PORT_SET,
     30 	DEVLINK_CMD_PORT_NEW,
     31 	DEVLINK_CMD_PORT_DEL,
     32 
     33 	DEVLINK_CMD_PORT_SPLIT,
     34 	DEVLINK_CMD_PORT_UNSPLIT,
     35 
     36 	DEVLINK_CMD_SB_GET,		/* can dump */
     37 	DEVLINK_CMD_SB_SET,
     38 	DEVLINK_CMD_SB_NEW,
     39 	DEVLINK_CMD_SB_DEL,
     40 
     41 	DEVLINK_CMD_SB_POOL_GET,	/* can dump */
     42 	DEVLINK_CMD_SB_POOL_SET,
     43 	DEVLINK_CMD_SB_POOL_NEW,
     44 	DEVLINK_CMD_SB_POOL_DEL,
     45 
     46 	DEVLINK_CMD_SB_PORT_POOL_GET,	/* can dump */
     47 	DEVLINK_CMD_SB_PORT_POOL_SET,
     48 	DEVLINK_CMD_SB_PORT_POOL_NEW,
     49 	DEVLINK_CMD_SB_PORT_POOL_DEL,
     50 
     51 	DEVLINK_CMD_SB_TC_POOL_BIND_GET,	/* can dump */
     52 	DEVLINK_CMD_SB_TC_POOL_BIND_SET,
     53 	DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
     54 	DEVLINK_CMD_SB_TC_POOL_BIND_DEL,
     55 
     56 	/* Shared buffer occupancy monitoring commands */
     57 	DEVLINK_CMD_SB_OCC_SNAPSHOT,
     58 	DEVLINK_CMD_SB_OCC_MAX_CLEAR,
     59 
     60 	DEVLINK_CMD_ESWITCH_MODE_GET,
     61 	DEVLINK_CMD_ESWITCH_MODE_SET,
     62 	/* add new commands above here */
     63 
     64 	__DEVLINK_CMD_MAX,
     65 	DEVLINK_CMD_MAX = __DEVLINK_CMD_MAX - 1
     66 };
     67 
     68 enum devlink_port_type {
     69 	DEVLINK_PORT_TYPE_NOTSET,
     70 	DEVLINK_PORT_TYPE_AUTO,
     71 	DEVLINK_PORT_TYPE_ETH,
     72 	DEVLINK_PORT_TYPE_IB,
     73 };
     74 
     75 enum devlink_sb_pool_type {
     76 	DEVLINK_SB_POOL_TYPE_INGRESS,
     77 	DEVLINK_SB_POOL_TYPE_EGRESS,
     78 };
     79 
     80 /* static threshold - limiting the maximum number of bytes.
     81  * dynamic threshold - limiting the maximum number of bytes
     82  *   based on the currently available free space in the shared buffer pool.
     83  *   In this mode, the maximum quota is calculated based
     84  *   on the following formula:
     85  *     max_quota = alpha / (1 + alpha) * Free_Buffer
     86  *   While Free_Buffer is the amount of none-occupied buffer associated to
     87  *   the relevant pool.
     88  *   The value range which can be passed is 0-20 and serves
     89  *   for computation of alpha by following formula:
     90  *     alpha = 2 ^ (passed_value - 10)
     91  */
     92 
     93 enum devlink_sb_threshold_type {
     94 	DEVLINK_SB_THRESHOLD_TYPE_STATIC,
     95 	DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC,
     96 };
     97 
     98 #define DEVLINK_SB_THRESHOLD_TO_ALPHA_MAX 20
     99 
    100 enum devlink_eswitch_mode {
    101 	DEVLINK_ESWITCH_MODE_LEGACY,
    102 	DEVLINK_ESWITCH_MODE_SWITCHDEV,
    103 };
    104 
    105 enum devlink_eswitch_inline_mode {
    106 	DEVLINK_ESWITCH_INLINE_MODE_NONE,
    107 	DEVLINK_ESWITCH_INLINE_MODE_LINK,
    108 	DEVLINK_ESWITCH_INLINE_MODE_NETWORK,
    109 	DEVLINK_ESWITCH_INLINE_MODE_TRANSPORT,
    110 };
    111 
    112 enum devlink_attr {
    113 	/* don't change the order or add anything between, this is ABI! */
    114 	DEVLINK_ATTR_UNSPEC,
    115 
    116 	/* bus name + dev name together are a handle for devlink entity */
    117 	DEVLINK_ATTR_BUS_NAME,			/* string */
    118 	DEVLINK_ATTR_DEV_NAME,			/* string */
    119 
    120 	DEVLINK_ATTR_PORT_INDEX,		/* u32 */
    121 	DEVLINK_ATTR_PORT_TYPE,			/* u16 */
    122 	DEVLINK_ATTR_PORT_DESIRED_TYPE,		/* u16 */
    123 	DEVLINK_ATTR_PORT_NETDEV_IFINDEX,	/* u32 */
    124 	DEVLINK_ATTR_PORT_NETDEV_NAME,		/* string */
    125 	DEVLINK_ATTR_PORT_IBDEV_NAME,		/* string */
    126 	DEVLINK_ATTR_PORT_SPLIT_COUNT,		/* u32 */
    127 	DEVLINK_ATTR_PORT_SPLIT_GROUP,		/* u32 */
    128 	DEVLINK_ATTR_SB_INDEX,			/* u32 */
    129 	DEVLINK_ATTR_SB_SIZE,			/* u32 */
    130 	DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,	/* u16 */
    131 	DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,	/* u16 */
    132 	DEVLINK_ATTR_SB_INGRESS_TC_COUNT,	/* u16 */
    133 	DEVLINK_ATTR_SB_EGRESS_TC_COUNT,	/* u16 */
    134 	DEVLINK_ATTR_SB_POOL_INDEX,		/* u16 */
    135 	DEVLINK_ATTR_SB_POOL_TYPE,		/* u8 */
    136 	DEVLINK_ATTR_SB_POOL_SIZE,		/* u32 */
    137 	DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,	/* u8 */
    138 	DEVLINK_ATTR_SB_THRESHOLD,		/* u32 */
    139 	DEVLINK_ATTR_SB_TC_INDEX,		/* u16 */
    140 	DEVLINK_ATTR_SB_OCC_CUR,		/* u32 */
    141 	DEVLINK_ATTR_SB_OCC_MAX,		/* u32 */
    142 	DEVLINK_ATTR_ESWITCH_MODE,		/* u16 */
    143 	DEVLINK_ATTR_ESWITCH_INLINE_MODE,	/* u8 */
    144 
    145 	/* add new attributes above here, update the policy in devlink.c */
    146 
    147 	__DEVLINK_ATTR_MAX,
    148 	DEVLINK_ATTR_MAX = __DEVLINK_ATTR_MAX - 1
    149 };
    150 
    151 #endif /* _UAPI_LINUX_DEVLINK_H_ */
    152