forked from mirrors/linux
1797f5b3cf
This will be used by the IPv6 host table which will be introduced in the following patches. The fields in the header are added per-use. This header is global and can be reused by many drivers. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
473 lines
13 KiB
C
473 lines
13 KiB
C
/*
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* include/net/devlink.h - Network physical device Netlink interface
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* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _NET_DEVLINK_H_
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#define _NET_DEVLINK_H_
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/gfp.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <net/net_namespace.h>
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#include <uapi/linux/devlink.h>
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struct devlink_ops;
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struct devlink {
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struct list_head list;
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struct list_head port_list;
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struct list_head sb_list;
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struct list_head dpipe_table_list;
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struct devlink_dpipe_headers *dpipe_headers;
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const struct devlink_ops *ops;
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struct device *dev;
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possible_net_t _net;
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char priv[0] __aligned(NETDEV_ALIGN);
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};
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struct devlink_port {
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struct list_head list;
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struct devlink *devlink;
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unsigned index;
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bool registered;
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enum devlink_port_type type;
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enum devlink_port_type desired_type;
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void *type_dev;
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bool split;
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u32 split_group;
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};
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struct devlink_sb_pool_info {
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enum devlink_sb_pool_type pool_type;
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u32 size;
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enum devlink_sb_threshold_type threshold_type;
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};
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/**
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* struct devlink_dpipe_field - dpipe field object
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* @name: field name
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* @id: index inside the headers field array
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* @bitwidth: bitwidth
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* @mapping_type: mapping type
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*/
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struct devlink_dpipe_field {
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const char *name;
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unsigned int id;
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unsigned int bitwidth;
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enum devlink_dpipe_field_mapping_type mapping_type;
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};
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/**
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* struct devlink_dpipe_header - dpipe header object
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* @name: header name
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* @id: index, global/local detrmined by global bit
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* @fields: fields
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* @fields_count: number of fields
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* @global: indicates if header is shared like most protocol header
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* or driver specific
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*/
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struct devlink_dpipe_header {
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const char *name;
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unsigned int id;
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struct devlink_dpipe_field *fields;
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unsigned int fields_count;
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bool global;
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};
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/**
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* struct devlink_dpipe_match - represents match operation
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* @type: type of match
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* @header_index: header index (packets can have several headers of same
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* type like in case of tunnels)
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* @header: header
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* @fieled_id: field index
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*/
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struct devlink_dpipe_match {
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enum devlink_dpipe_match_type type;
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unsigned int header_index;
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struct devlink_dpipe_header *header;
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unsigned int field_id;
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};
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/**
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* struct devlink_dpipe_action - represents action operation
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* @type: type of action
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* @header_index: header index (packets can have several headers of same
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* type like in case of tunnels)
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* @header: header
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* @fieled_id: field index
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*/
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struct devlink_dpipe_action {
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enum devlink_dpipe_action_type type;
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unsigned int header_index;
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struct devlink_dpipe_header *header;
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unsigned int field_id;
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};
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/**
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* struct devlink_dpipe_value - represents value of match/action
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* @action: action
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* @match: match
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* @mapping_value: in case the field has some mapping this value
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* specified the mapping value
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* @mapping_valid: specify if mapping value is valid
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* @value_size: value size
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* @value: value
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* @mask: bit mask
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*/
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struct devlink_dpipe_value {
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union {
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struct devlink_dpipe_action *action;
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struct devlink_dpipe_match *match;
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};
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unsigned int mapping_value;
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bool mapping_valid;
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unsigned int value_size;
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void *value;
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void *mask;
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};
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/**
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* struct devlink_dpipe_entry - table entry object
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* @index: index of the entry in the table
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* @match_values: match values
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* @matche_values_count: count of matches tuples
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* @action_values: actions values
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* @action_values_count: count of actions values
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* @counter: value of counter
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* @counter_valid: Specify if value is valid from hardware
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*/
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struct devlink_dpipe_entry {
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u64 index;
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struct devlink_dpipe_value *match_values;
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unsigned int match_values_count;
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struct devlink_dpipe_value *action_values;
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unsigned int action_values_count;
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u64 counter;
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bool counter_valid;
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};
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/**
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* struct devlink_dpipe_dump_ctx - context provided to driver in order
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* to dump
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* @info: info
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* @cmd: devlink command
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* @skb: skb
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* @nest: top attribute
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* @hdr: hdr
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*/
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struct devlink_dpipe_dump_ctx {
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struct genl_info *info;
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enum devlink_command cmd;
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struct sk_buff *skb;
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struct nlattr *nest;
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void *hdr;
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};
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struct devlink_dpipe_table_ops;
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/**
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* struct devlink_dpipe_table - table object
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* @priv: private
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* @name: table name
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* @counters_enabled: indicates if counters are active
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* @counter_control_extern: indicates if counter control is in dpipe or
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* external tool
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* @table_ops: table operations
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* @rcu: rcu
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*/
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struct devlink_dpipe_table {
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void *priv;
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struct list_head list;
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const char *name;
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bool counters_enabled;
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bool counter_control_extern;
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struct devlink_dpipe_table_ops *table_ops;
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struct rcu_head rcu;
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};
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/**
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* struct devlink_dpipe_table_ops - dpipe_table ops
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* @actions_dump - dumps all tables actions
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* @matches_dump - dumps all tables matches
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* @entries_dump - dumps all active entries in the table
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* @counters_set_update - when changing the counter status hardware sync
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* maybe needed to allocate/free counter related
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* resources
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* @size_get - get size
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*/
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struct devlink_dpipe_table_ops {
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int (*actions_dump)(void *priv, struct sk_buff *skb);
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int (*matches_dump)(void *priv, struct sk_buff *skb);
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int (*entries_dump)(void *priv, bool counters_enabled,
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struct devlink_dpipe_dump_ctx *dump_ctx);
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int (*counters_set_update)(void *priv, bool enable);
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u64 (*size_get)(void *priv);
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};
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/**
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* struct devlink_dpipe_headers - dpipe headers
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* @headers - header array can be shared (global bit) or driver specific
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* @headers_count - count of headers
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*/
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struct devlink_dpipe_headers {
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struct devlink_dpipe_header **headers;
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unsigned int headers_count;
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};
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struct devlink_ops {
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int (*port_type_set)(struct devlink_port *devlink_port,
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enum devlink_port_type port_type);
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int (*port_split)(struct devlink *devlink, unsigned int port_index,
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unsigned int count);
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int (*port_unsplit)(struct devlink *devlink, unsigned int port_index);
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int (*sb_pool_get)(struct devlink *devlink, unsigned int sb_index,
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u16 pool_index,
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struct devlink_sb_pool_info *pool_info);
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int (*sb_pool_set)(struct devlink *devlink, unsigned int sb_index,
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u16 pool_index, u32 size,
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enum devlink_sb_threshold_type threshold_type);
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int (*sb_port_pool_get)(struct devlink_port *devlink_port,
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unsigned int sb_index, u16 pool_index,
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u32 *p_threshold);
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int (*sb_port_pool_set)(struct devlink_port *devlink_port,
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unsigned int sb_index, u16 pool_index,
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u32 threshold);
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int (*sb_tc_pool_bind_get)(struct devlink_port *devlink_port,
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unsigned int sb_index,
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u16 tc_index,
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enum devlink_sb_pool_type pool_type,
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u16 *p_pool_index, u32 *p_threshold);
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int (*sb_tc_pool_bind_set)(struct devlink_port *devlink_port,
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unsigned int sb_index,
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u16 tc_index,
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enum devlink_sb_pool_type pool_type,
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u16 pool_index, u32 threshold);
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int (*sb_occ_snapshot)(struct devlink *devlink,
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unsigned int sb_index);
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int (*sb_occ_max_clear)(struct devlink *devlink,
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unsigned int sb_index);
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int (*sb_occ_port_pool_get)(struct devlink_port *devlink_port,
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unsigned int sb_index, u16 pool_index,
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u32 *p_cur, u32 *p_max);
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int (*sb_occ_tc_port_bind_get)(struct devlink_port *devlink_port,
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unsigned int sb_index,
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u16 tc_index,
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enum devlink_sb_pool_type pool_type,
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u32 *p_cur, u32 *p_max);
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int (*eswitch_mode_get)(struct devlink *devlink, u16 *p_mode);
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int (*eswitch_mode_set)(struct devlink *devlink, u16 mode);
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int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode);
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int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode);
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int (*eswitch_encap_mode_get)(struct devlink *devlink, u8 *p_encap_mode);
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int (*eswitch_encap_mode_set)(struct devlink *devlink, u8 encap_mode);
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};
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static inline void *devlink_priv(struct devlink *devlink)
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{
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BUG_ON(!devlink);
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return &devlink->priv;
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}
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static inline struct devlink *priv_to_devlink(void *priv)
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{
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BUG_ON(!priv);
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return container_of(priv, struct devlink, priv);
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}
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struct ib_device;
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#if IS_ENABLED(CONFIG_NET_DEVLINK)
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struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size);
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int devlink_register(struct devlink *devlink, struct device *dev);
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void devlink_unregister(struct devlink *devlink);
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void devlink_free(struct devlink *devlink);
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int devlink_port_register(struct devlink *devlink,
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struct devlink_port *devlink_port,
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unsigned int port_index);
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void devlink_port_unregister(struct devlink_port *devlink_port);
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void devlink_port_type_eth_set(struct devlink_port *devlink_port,
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struct net_device *netdev);
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void devlink_port_type_ib_set(struct devlink_port *devlink_port,
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struct ib_device *ibdev);
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void devlink_port_type_clear(struct devlink_port *devlink_port);
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void devlink_port_split_set(struct devlink_port *devlink_port,
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u32 split_group);
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int devlink_sb_register(struct devlink *devlink, unsigned int sb_index,
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u32 size, u16 ingress_pools_count,
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u16 egress_pools_count, u16 ingress_tc_count,
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u16 egress_tc_count);
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void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index);
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int devlink_dpipe_table_register(struct devlink *devlink,
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const char *table_name,
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struct devlink_dpipe_table_ops *table_ops,
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void *priv, bool counter_control_extern);
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void devlink_dpipe_table_unregister(struct devlink *devlink,
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const char *table_name);
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int devlink_dpipe_headers_register(struct devlink *devlink,
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struct devlink_dpipe_headers *dpipe_headers);
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void devlink_dpipe_headers_unregister(struct devlink *devlink);
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bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
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const char *table_name);
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int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx);
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int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
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struct devlink_dpipe_entry *entry);
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int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx);
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void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry);
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int devlink_dpipe_action_put(struct sk_buff *skb,
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struct devlink_dpipe_action *action);
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int devlink_dpipe_match_put(struct sk_buff *skb,
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struct devlink_dpipe_match *match);
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extern struct devlink_dpipe_header devlink_dpipe_header_ethernet;
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extern struct devlink_dpipe_header devlink_dpipe_header_ipv4;
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extern struct devlink_dpipe_header devlink_dpipe_header_ipv6;
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#else
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static inline struct devlink *devlink_alloc(const struct devlink_ops *ops,
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size_t priv_size)
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{
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return kzalloc(sizeof(struct devlink) + priv_size, GFP_KERNEL);
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}
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static inline int devlink_register(struct devlink *devlink, struct device *dev)
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{
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return 0;
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}
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static inline void devlink_unregister(struct devlink *devlink)
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{
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}
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static inline void devlink_free(struct devlink *devlink)
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{
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kfree(devlink);
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}
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static inline int devlink_port_register(struct devlink *devlink,
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struct devlink_port *devlink_port,
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unsigned int port_index)
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{
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return 0;
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}
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static inline void devlink_port_unregister(struct devlink_port *devlink_port)
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{
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}
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static inline void devlink_port_type_eth_set(struct devlink_port *devlink_port,
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struct net_device *netdev)
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{
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}
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static inline void devlink_port_type_ib_set(struct devlink_port *devlink_port,
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struct ib_device *ibdev)
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{
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}
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static inline void devlink_port_type_clear(struct devlink_port *devlink_port)
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{
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}
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static inline void devlink_port_split_set(struct devlink_port *devlink_port,
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u32 split_group)
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{
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}
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static inline int devlink_sb_register(struct devlink *devlink,
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unsigned int sb_index, u32 size,
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u16 ingress_pools_count,
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u16 egress_pools_count,
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u16 ingress_tc_count,
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u16 egress_tc_count)
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{
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return 0;
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}
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static inline void devlink_sb_unregister(struct devlink *devlink,
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unsigned int sb_index)
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{
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}
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static inline int
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devlink_dpipe_table_register(struct devlink *devlink,
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const char *table_name,
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struct devlink_dpipe_table_ops *table_ops,
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void *priv, bool counter_control_extern)
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{
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return 0;
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}
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static inline void devlink_dpipe_table_unregister(struct devlink *devlink,
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const char *table_name)
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{
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}
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static inline int devlink_dpipe_headers_register(struct devlink *devlink,
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struct devlink_dpipe_headers *
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dpipe_headers)
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{
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return 0;
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}
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static inline void devlink_dpipe_headers_unregister(struct devlink *devlink)
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{
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}
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static inline bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
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const char *table_name)
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{
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return false;
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}
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static inline int
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devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
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{
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return 0;
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}
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static inline int
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devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
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struct devlink_dpipe_entry *entry)
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{
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return 0;
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}
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static inline int
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devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
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{
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return 0;
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}
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static inline void
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devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
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{
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}
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static inline int
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devlink_dpipe_action_put(struct sk_buff *skb,
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struct devlink_dpipe_action *action)
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{
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return 0;
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}
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static inline int
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devlink_dpipe_match_put(struct sk_buff *skb,
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struct devlink_dpipe_match *match)
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{
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return 0;
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}
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#endif
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#endif /* _NET_DEVLINK_H_ */
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