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09117362 NA |
1 | /* |
2 | * drivers/net/bond/bond_options.h - bonding options | |
3 | * Copyright (c) 2013 Nikolay Aleksandrov <nikolay@redhat.com> | |
4 | * | |
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. | |
9 | */ | |
10 | ||
11 | #ifndef _BOND_OPTIONS_H | |
12 | #define _BOND_OPTIONS_H | |
13 | ||
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)) | |
17 | ||
18 | /* Option flags: | |
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 | |
22 | */ | |
23 | enum { | |
24 | BOND_OPTFLAG_NOSLAVES = BIT(0), | |
25 | BOND_OPTFLAG_IFDOWN = BIT(1), | |
26 | BOND_OPTFLAG_RAWVAL = BIT(2) | |
27 | }; | |
28 | ||
29 | /* Value type flags: | |
30 | * BOND_VALFLAG_DEFAULT - mark the value as default | |
31 | * BOND_VALFLAG_(MIN|MAX) - mark the value as min/max | |
32 | */ | |
33 | enum { | |
34 | BOND_VALFLAG_DEFAULT = BIT(0), | |
35 | BOND_VALFLAG_MIN = BIT(1), | |
36 | BOND_VALFLAG_MAX = BIT(2) | |
37 | }; | |
38 | ||
39 | /* Option IDs, their bit positions correspond to their IDs */ | |
40 | enum { | |
2b3798d5 | 41 | BOND_OPT_MODE, |
aa59d851 | 42 | BOND_OPT_PACKETS_PER_SLAVE, |
09117362 NA |
43 | BOND_OPT_LAST |
44 | }; | |
45 | ||
46 | /* This structure is used for storing option values and for passing option | |
47 | * values when changing an option. The logic when used as an arg is as follows: | |
48 | * - if string != NULL -> parse it, if the opt is RAW type then return it, else | |
49 | * return the parse result | |
50 | * - if string == NULL -> parse value | |
51 | */ | |
52 | struct bond_opt_value { | |
53 | char *string; | |
54 | u64 value; | |
55 | u32 flags; | |
56 | }; | |
57 | ||
58 | struct bonding; | |
59 | ||
60 | struct bond_option { | |
61 | int id; | |
62 | char *name; | |
63 | char *desc; | |
64 | u32 flags; | |
65 | ||
66 | /* unsuppmodes is used to denote modes in which the option isn't | |
67 | * supported. | |
68 | */ | |
69 | unsigned long unsuppmodes; | |
70 | /* supported values which this option can have, can be a subset of | |
71 | * BOND_OPTVAL_RANGE's value range | |
72 | */ | |
73 | struct bond_opt_value *values; | |
74 | ||
75 | int (*set)(struct bonding *bond, struct bond_opt_value *val); | |
76 | }; | |
77 | ||
78 | int __bond_opt_set(struct bonding *bond, unsigned int option, | |
79 | struct bond_opt_value *val); | |
80 | int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf); | |
81 | struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, | |
82 | struct bond_opt_value *val); | |
83 | struct bond_option *bond_opt_get(unsigned int option); | |
84 | struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val); | |
85 | ||
86 | /* This helper is used to initialize a bond_opt_value structure for parameter | |
87 | * passing. There should be either a valid string or value, but not both. | |
88 | * When value is ULLONG_MAX then string will be used. | |
89 | */ | |
90 | static inline void __bond_opt_init(struct bond_opt_value *optval, | |
91 | char *string, u64 value) | |
92 | { | |
93 | memset(optval, 0, sizeof(*optval)); | |
94 | optval->value = ULLONG_MAX; | |
95 | if (value == ULLONG_MAX) | |
96 | optval->string = string; | |
97 | else | |
98 | optval->value = value; | |
99 | } | |
100 | #define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value) | |
101 | #define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX) | |
2b3798d5 NA |
102 | |
103 | int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval); | |
aa59d851 | 104 | int bond_option_pps_set(struct bonding *bond, struct bond_opt_value *newval); |
09117362 | 105 | #endif /* _BOND_OPTIONS_H */ |