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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * drivers/net/bond/bond_options.h - bonding options
4 * Copyright (c) 2013 Nikolay Aleksandrov <nikolay@redhat.com>
5 */
6
7#ifndef _NET_BOND_OPTIONS_H
8#define _NET_BOND_OPTIONS_H
9
10#include <linux/bits.h>
11#include <linux/limits.h>
12#include <linux/types.h>
13#include <linux/string.h>
14
15struct netlink_ext_ack;
16struct nlattr;
17
18#define BOND_OPT_MAX_NAMELEN 32
19#define BOND_OPT_VALID(opt) ((opt) < BOND_OPT_LAST)
20#define BOND_MODE_ALL_EX(x) (~(x))
21
22/* Option flags:
23 * BOND_OPTFLAG_NOSLAVES - check if the bond device is empty before setting
24 * BOND_OPTFLAG_IFDOWN - check if the bond device is down before setting
25 * BOND_OPTFLAG_RAWVAL - the option parses the value itself
26 */
27enum {
28 BOND_OPTFLAG_NOSLAVES = BIT(0),
29 BOND_OPTFLAG_IFDOWN = BIT(1),
30 BOND_OPTFLAG_RAWVAL = BIT(2)
31};
32
33/* Value type flags:
34 * BOND_VALFLAG_DEFAULT - mark the value as default
35 * BOND_VALFLAG_(MIN|MAX) - mark the value as min/max
36 */
37enum {
38 BOND_VALFLAG_DEFAULT = BIT(0),
39 BOND_VALFLAG_MIN = BIT(1),
40 BOND_VALFLAG_MAX = BIT(2)
41};
42
43/* Option IDs, their bit positions correspond to their IDs */
44enum {
45 BOND_OPT_MODE,
46 BOND_OPT_PACKETS_PER_SLAVE,
47 BOND_OPT_XMIT_HASH,
48 BOND_OPT_ARP_VALIDATE,
49 BOND_OPT_ARP_ALL_TARGETS,
50 BOND_OPT_FAIL_OVER_MAC,
51 BOND_OPT_ARP_INTERVAL,
52 BOND_OPT_ARP_TARGETS,
53 BOND_OPT_DOWNDELAY,
54 BOND_OPT_UPDELAY,
55 BOND_OPT_LACP_RATE,
56 BOND_OPT_MINLINKS,
57 BOND_OPT_AD_SELECT,
58 BOND_OPT_NUM_PEER_NOTIF,
59 BOND_OPT_MIIMON,
60 BOND_OPT_PRIMARY,
61 BOND_OPT_PRIMARY_RESELECT,
62 BOND_OPT_USE_CARRIER,
63 BOND_OPT_ACTIVE_SLAVE,
64 BOND_OPT_QUEUE_ID,
65 BOND_OPT_ALL_SLAVES_ACTIVE,
66 BOND_OPT_RESEND_IGMP,
67 BOND_OPT_LP_INTERVAL,
68 BOND_OPT_SLAVES,
69 BOND_OPT_TLB_DYNAMIC_LB,
70 BOND_OPT_AD_ACTOR_SYS_PRIO,
71 BOND_OPT_AD_ACTOR_SYSTEM,
72 BOND_OPT_AD_USER_PORT_KEY,
73 BOND_OPT_NUM_PEER_NOTIF_ALIAS,
74 BOND_OPT_PEER_NOTIF_DELAY,
75 BOND_OPT_LACP_ACTIVE,
76 BOND_OPT_MISSED_MAX,
77 BOND_OPT_NS_TARGETS,
78 BOND_OPT_PRIO,
79 BOND_OPT_LAST
80};
81
82/* This structure is used for storing option values and for passing option
83 * values when changing an option. The logic when used as an arg is as follows:
84 * - if value != ULLONG_MAX -> parse value
85 * - if string != NULL -> parse string
86 * - if the opt is RAW data and length less than maxlen,
87 * copy the data to extra storage
88 */
89
90#define BOND_OPT_EXTRA_MAXLEN 16
91struct bond_opt_value {
92 char *string;
93 u64 value;
94 u32 flags;
95 union {
96 char extra[BOND_OPT_EXTRA_MAXLEN];
97 struct net_device *slave_dev;
98 };
99};
100
101struct bonding;
102
103struct bond_option {
104 int id;
105 const char *name;
106 const char *desc;
107 u32 flags;
108
109 /* unsuppmodes is used to denote modes in which the option isn't
110 * supported.
111 */
112 unsigned long unsuppmodes;
113 /* supported values which this option can have, can be a subset of
114 * BOND_OPTVAL_RANGE's value range
115 */
116 const struct bond_opt_value *values;
117
118 int (*set)(struct bonding *bond, const struct bond_opt_value *val);
119};
120
121int __bond_opt_set(struct bonding *bond, unsigned int option,
122 struct bond_opt_value *val,
123 struct nlattr *bad_attr, struct netlink_ext_ack *extack);
124int __bond_opt_set_notify(struct bonding *bond, unsigned int option,
125 struct bond_opt_value *val);
126int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf);
127
128const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
129 struct bond_opt_value *val);
130const struct bond_option *bond_opt_get(unsigned int option);
131const struct bond_option *bond_opt_get_by_name(const char *name);
132const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val);
133
134/* This helper is used to initialize a bond_opt_value structure for parameter
135 * passing. There should be either a valid string or value, but not both.
136 * When value is ULLONG_MAX then string will be used.
137 */
138static inline void __bond_opt_init(struct bond_opt_value *optval,
139 char *string, u64 value,
140 void *extra, size_t extra_len)
141{
142 memset(optval, 0, sizeof(*optval));
143 optval->value = ULLONG_MAX;
144 if (value != ULLONG_MAX)
145 optval->value = value;
146 else if (string)
147 optval->string = string;
148
149 if (extra && extra_len <= BOND_OPT_EXTRA_MAXLEN)
150 memcpy(optval->extra, extra, extra_len);
151}
152#define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value, NULL, 0)
153#define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX, NULL, 0)
154#define bond_opt_initextra(optval, extra, extra_len) \
155 __bond_opt_init(optval, NULL, ULLONG_MAX, extra, extra_len)
156#define bond_opt_slave_initval(optval, slave_dev, value) \
157 __bond_opt_init(optval, NULL, value, slave_dev, sizeof(struct net_device *))
158
159void bond_option_arp_ip_targets_clear(struct bonding *bond);
160#if IS_ENABLED(CONFIG_IPV6)
161void bond_option_ns_ip6_targets_clear(struct bonding *bond);
162#endif
163
164#endif /* _NET_BOND_OPTIONS_H */
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * drivers/net/bond/bond_options.h - bonding options
4 * Copyright (c) 2013 Nikolay Aleksandrov <nikolay@redhat.com>
5 */
6
7#ifndef _NET_BOND_OPTIONS_H
8#define _NET_BOND_OPTIONS_H
9
10#define BOND_OPT_MAX_NAMELEN 32
11#define BOND_OPT_VALID(opt) ((opt) < BOND_OPT_LAST)
12#define BOND_MODE_ALL_EX(x) (~(x))
13
14/* Option flags:
15 * BOND_OPTFLAG_NOSLAVES - check if the bond device is empty before setting
16 * BOND_OPTFLAG_IFDOWN - check if the bond device is down before setting
17 * BOND_OPTFLAG_RAWVAL - the option parses the value itself
18 */
19enum {
20 BOND_OPTFLAG_NOSLAVES = BIT(0),
21 BOND_OPTFLAG_IFDOWN = BIT(1),
22 BOND_OPTFLAG_RAWVAL = BIT(2)
23};
24
25/* Value type flags:
26 * BOND_VALFLAG_DEFAULT - mark the value as default
27 * BOND_VALFLAG_(MIN|MAX) - mark the value as min/max
28 */
29enum {
30 BOND_VALFLAG_DEFAULT = BIT(0),
31 BOND_VALFLAG_MIN = BIT(1),
32 BOND_VALFLAG_MAX = BIT(2)
33};
34
35/* Option IDs, their bit positions correspond to their IDs */
36enum {
37 BOND_OPT_MODE,
38 BOND_OPT_PACKETS_PER_SLAVE,
39 BOND_OPT_XMIT_HASH,
40 BOND_OPT_ARP_VALIDATE,
41 BOND_OPT_ARP_ALL_TARGETS,
42 BOND_OPT_FAIL_OVER_MAC,
43 BOND_OPT_ARP_INTERVAL,
44 BOND_OPT_ARP_TARGETS,
45 BOND_OPT_DOWNDELAY,
46 BOND_OPT_UPDELAY,
47 BOND_OPT_LACP_RATE,
48 BOND_OPT_MINLINKS,
49 BOND_OPT_AD_SELECT,
50 BOND_OPT_NUM_PEER_NOTIF,
51 BOND_OPT_MIIMON,
52 BOND_OPT_PRIMARY,
53 BOND_OPT_PRIMARY_RESELECT,
54 BOND_OPT_USE_CARRIER,
55 BOND_OPT_ACTIVE_SLAVE,
56 BOND_OPT_QUEUE_ID,
57 BOND_OPT_ALL_SLAVES_ACTIVE,
58 BOND_OPT_RESEND_IGMP,
59 BOND_OPT_LP_INTERVAL,
60 BOND_OPT_SLAVES,
61 BOND_OPT_TLB_DYNAMIC_LB,
62 BOND_OPT_AD_ACTOR_SYS_PRIO,
63 BOND_OPT_AD_ACTOR_SYSTEM,
64 BOND_OPT_AD_USER_PORT_KEY,
65 BOND_OPT_NUM_PEER_NOTIF_ALIAS,
66 BOND_OPT_PEER_NOTIF_DELAY,
67 BOND_OPT_LAST
68};
69
70/* This structure is used for storing option values and for passing option
71 * values when changing an option. The logic when used as an arg is as follows:
72 * - if string != NULL -> parse it, if the opt is RAW type then return it, else
73 * return the parse result
74 * - if string == NULL -> parse value
75 */
76struct bond_opt_value {
77 char *string;
78 u64 value;
79 u32 flags;
80};
81
82struct bonding;
83
84struct bond_option {
85 int id;
86 const char *name;
87 const char *desc;
88 u32 flags;
89
90 /* unsuppmodes is used to denote modes in which the option isn't
91 * supported.
92 */
93 unsigned long unsuppmodes;
94 /* supported values which this option can have, can be a subset of
95 * BOND_OPTVAL_RANGE's value range
96 */
97 const struct bond_opt_value *values;
98
99 int (*set)(struct bonding *bond, const struct bond_opt_value *val);
100};
101
102int __bond_opt_set(struct bonding *bond, unsigned int option,
103 struct bond_opt_value *val);
104int __bond_opt_set_notify(struct bonding *bond, unsigned int option,
105 struct bond_opt_value *val);
106int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf);
107
108const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
109 struct bond_opt_value *val);
110const struct bond_option *bond_opt_get(unsigned int option);
111const struct bond_option *bond_opt_get_by_name(const char *name);
112const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val);
113
114/* This helper is used to initialize a bond_opt_value structure for parameter
115 * passing. There should be either a valid string or value, but not both.
116 * When value is ULLONG_MAX then string will be used.
117 */
118static inline void __bond_opt_init(struct bond_opt_value *optval,
119 char *string, u64 value)
120{
121 memset(optval, 0, sizeof(*optval));
122 optval->value = ULLONG_MAX;
123 if (value == ULLONG_MAX)
124 optval->string = string;
125 else
126 optval->value = value;
127}
128#define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value)
129#define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX)
130
131void bond_option_arp_ip_targets_clear(struct bonding *bond);
132
133#endif /* _NET_BOND_OPTIONS_H */