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 */ 19 enum { 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 */ 29 enum { 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 */ 36 enum { 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_LACP_ACTIVE, 68 BOND_OPT_MISSED_MAX, 69 BOND_OPT_NS_TARGETS, 70 BOND_OPT_PRIO, 71 BOND_OPT_LAST 72 }; 73 74 /* This structure is used for storing option values and for passing option 75 * values when changing an option. The logic when used as an arg is as follows: 76 * - if value != ULLONG_MAX -> parse value 77 * - if string != NULL -> parse string 78 * - if the opt is RAW data and length less than maxlen, 79 * copy the data to extra storage 80 */ 81 82 #define BOND_OPT_EXTRA_MAXLEN 16 83 struct bond_opt_value { 84 char *string; 85 u64 value; 86 u32 flags; 87 union { 88 char extra[BOND_OPT_EXTRA_MAXLEN]; 89 struct net_device *slave_dev; 90 }; 91 }; 92 93 struct bonding; 94 95 struct bond_option { 96 int id; 97 const char *name; 98 const char *desc; 99 u32 flags; 100 101 /* unsuppmodes is used to denote modes in which the option isn't 102 * supported. 103 */ 104 unsigned long unsuppmodes; 105 /* supported values which this option can have, can be a subset of 106 * BOND_OPTVAL_RANGE's value range 107 */ 108 const struct bond_opt_value *values; 109 110 int (*set)(struct bonding *bond, const struct bond_opt_value *val); 111 }; 112 113 int __bond_opt_set(struct bonding *bond, unsigned int option, 114 struct bond_opt_value *val, 115 struct nlattr *bad_attr, struct netlink_ext_ack *extack); 116 int __bond_opt_set_notify(struct bonding *bond, unsigned int option, 117 struct bond_opt_value *val); 118 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf); 119 120 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt, 121 struct bond_opt_value *val); 122 const struct bond_option *bond_opt_get(unsigned int option); 123 const struct bond_option *bond_opt_get_by_name(const char *name); 124 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val); 125 126 /* This helper is used to initialize a bond_opt_value structure for parameter 127 * passing. There should be either a valid string or value, but not both. 128 * When value is ULLONG_MAX then string will be used. 129 */ 130 static inline void __bond_opt_init(struct bond_opt_value *optval, 131 char *string, u64 value, 132 void *extra, size_t extra_len) 133 { 134 memset(optval, 0, sizeof(*optval)); 135 optval->value = ULLONG_MAX; 136 if (value != ULLONG_MAX) 137 optval->value = value; 138 else if (string) 139 optval->string = string; 140 141 if (extra && extra_len <= BOND_OPT_EXTRA_MAXLEN) 142 memcpy(optval->extra, extra, extra_len); 143 } 144 #define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value, NULL, 0) 145 #define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX, NULL, 0) 146 #define bond_opt_initextra(optval, extra, extra_len) \ 147 __bond_opt_init(optval, NULL, ULLONG_MAX, extra, extra_len) 148 #define bond_opt_slave_initval(optval, slave_dev, value) \ 149 __bond_opt_init(optval, NULL, value, slave_dev, sizeof(struct net_device *)) 150 151 void bond_option_arp_ip_targets_clear(struct bonding *bond); 152 #if IS_ENABLED(CONFIG_IPV6) 153 void bond_option_ns_ip6_targets_clear(struct bonding *bond); 154 #endif 155 156 #endif /* _NET_BOND_OPTIONS_H */ 157