2 * drivers/net/bond/bond_options.h - bonding options
3 * Copyright (c) 2013 Nikolay Aleksandrov <nikolay@redhat.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
11 #ifndef _BOND_OPTIONS_H
12 #define _BOND_OPTIONS_H
14 #define BOND_OPT_MAX_NAMELEN 32
15 #define BOND_OPT_VALID(opt) ((opt) < BOND_OPT_LAST)
16 #define BOND_MODE_ALL_EX(x) (~(x))
19 * BOND_OPTFLAG_NOSLAVES - check if the bond device is empty before setting
20 * BOND_OPTFLAG_IFDOWN - check if the bond device is down before setting
21 * BOND_OPTFLAG_RAWVAL - the option parses the value itself
24 BOND_OPTFLAG_NOSLAVES = BIT(0),
25 BOND_OPTFLAG_IFDOWN = BIT(1),
26 BOND_OPTFLAG_RAWVAL = BIT(2)
30 * BOND_VALFLAG_DEFAULT - mark the value as default
31 * BOND_VALFLAG_(MIN|MAX) - mark the value as min/max
34 BOND_VALFLAG_DEFAULT = BIT(0),
35 BOND_VALFLAG_MIN = BIT(1),
36 BOND_VALFLAG_MAX = BIT(2)
39 /* Option IDs, their bit positions correspond to their IDs */
45 /* This structure is used for storing option values and for passing option
46 * values when changing an option. The logic when used as an arg is as follows:
47 * - if string != NULL -> parse it, if the opt is RAW type then return it, else
48 * return the parse result
49 * - if string == NULL -> parse value
51 struct bond_opt_value {
65 /* unsuppmodes is used to denote modes in which the option isn't
68 unsigned long unsuppmodes;
69 /* supported values which this option can have, can be a subset of
70 * BOND_OPTVAL_RANGE's value range
72 struct bond_opt_value *values;
74 int (*set)(struct bonding *bond, struct bond_opt_value *val);
77 int __bond_opt_set(struct bonding *bond, unsigned int option,
78 struct bond_opt_value *val);
79 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf);
80 struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
81 struct bond_opt_value *val);
82 struct bond_option *bond_opt_get(unsigned int option);
83 struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val);
85 /* This helper is used to initialize a bond_opt_value structure for parameter
86 * passing. There should be either a valid string or value, but not both.
87 * When value is ULLONG_MAX then string will be used.
89 static inline void __bond_opt_init(struct bond_opt_value *optval,
90 char *string, u64 value)
92 memset(optval, 0, sizeof(*optval));
93 optval->value = ULLONG_MAX;
94 if (value == ULLONG_MAX)
95 optval->string = string;
97 optval->value = value;
99 #define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value)
100 #define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX)
102 int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval);
103 #endif /* _BOND_OPTIONS_H */