/* SPDX-License-Identifier: GPL-2.0-or-later *//* * drivers/net/bond/bond_options.h - bonding options * Copyright (c) 2013 Nikolay Aleksandrov <nikolay@redhat.com> */ #ifndef _NET_BOND_OPTIONS_H#define _NET_BOND_OPTIONS_H #include <linux/bits.h>#include <linux/limits.h>#include <linux/types.h>#include <linux/string.h> struct netlink_ext_ack;struct nlattr; #define BOND_OPT_MAX_NAMELEN 32#define BOND_OPT_VALID(opt) ((opt) < BOND_OPT_LAST)#define BOND_MODE_ALL_EX(x) (~(x)) /* Option flags: * BOND_OPTFLAG_NOSLAVES - check if the bond device is empty before setting * BOND_OPTFLAG_IFDOWN - check if the bond device is down before setting * BOND_OPTFLAG_RAWVAL - the option parses the value itself */enum {	BOND_OPTFLAG_NOSLAVES	= BIT(0),	BOND_OPTFLAG_IFDOWN	= BIT(1),	BOND_OPTFLAG_RAWVAL	= BIT(2)}; /* Value type flags: * BOND_VALFLAG_DEFAULT - mark the value as default * BOND_VALFLAG_(MIN|MAX) - mark the value as min/max */enum {	BOND_VALFLAG_DEFAULT	= BIT(0),	BOND_VALFLAG_MIN	= BIT(1),	BOND_VALFLAG_MAX	= BIT(2)}; /* Option IDs, their bit positions correspond to their IDs */enum {	BOND_OPT_MODE,	BOND_OPT_PACKETS_PER_SLAVE,	BOND_OPT_XMIT_HASH,	BOND_OPT_ARP_VALIDATE,	BOND_OPT_ARP_ALL_TARGETS,	BOND_OPT_FAIL_OVER_MAC,	BOND_OPT_ARP_INTERVAL,	BOND_OPT_ARP_TARGETS,	BOND_OPT_DOWNDELAY,	BOND_OPT_UPDELAY,	BOND_OPT_LACP_RATE,	BOND_OPT_MINLINKS,	BOND_OPT_AD_SELECT,	BOND_OPT_NUM_PEER_NOTIF,	BOND_OPT_MIIMON,	BOND_OPT_PRIMARY,	BOND_OPT_PRIMARY_RESELECT,	BOND_OPT_USE_CARRIER,	BOND_OPT_ACTIVE_SLAVE,	BOND_OPT_QUEUE_ID,	BOND_OPT_ALL_SLAVES_ACTIVE,	BOND_OPT_RESEND_IGMP,	BOND_OPT_LP_INTERVAL,	BOND_OPT_SLAVES,	BOND_OPT_TLB_DYNAMIC_LB,	BOND_OPT_AD_ACTOR_SYS_PRIO,	BOND_OPT_AD_ACTOR_SYSTEM,	BOND_OPT_AD_USER_PORT_KEY,	BOND_OPT_NUM_PEER_NOTIF_ALIAS,	BOND_OPT_PEER_NOTIF_DELAY,	BOND_OPT_LACP_ACTIVE,	BOND_OPT_MISSED_MAX,	BOND_OPT_NS_TARGETS,	BOND_OPT_PRIO,	BOND_OPT_COUPLED_CONTROL,	BOND_OPT_BROADCAST_NEIGH,	BOND_OPT_ACTOR_PORT_PRIO,	BOND_OPT_LACP_STRICT,	BOND_OPT_LAST}; /* This structure is used for storing option values and for passing option * values when changing an option. The logic when used as an arg is as follows: * - if value != ULLONG_MAX -> parse value * - if string != NULL -> parse string * - if the opt is RAW data and length less than maxlen, *   copy the data to extra storage */ #define BOND_OPT_EXTRA_MAXLEN 16struct bond_opt_value {	char *string;	u64 value;	u32 flags;	union {		char extra[BOND_OPT_EXTRA_MAXLEN];		struct net_device *slave_dev;	};}; struct bonding; struct bond_option {	int id;	const char *name;	const char *desc;	u32 flags; 	/* unsuppmodes is used to denote modes in which the option isn't	 * supported.	 */	unsigned long unsuppmodes;	/* supported values which this option can have, can be a subset of	 * BOND_OPTVAL_RANGE's value range	 */	const struct bond_opt_value *values; 	int (*set)(struct bonding *bond, const struct bond_opt_value *val);}; int __bond_opt_set(struct bonding *bond, unsigned int option,		   struct bond_opt_value *val,		   struct nlattr *bad_attr, struct netlink_ext_ack *extack);int __bond_opt_set_notify(struct bonding *bond, unsigned int option,			  struct bond_opt_value *val);int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf); const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,					    struct bond_opt_value *val);const struct bond_option *bond_opt_get(unsigned int option);const struct bond_option *bond_opt_get_by_name(const char *name);const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val); /* This helper is used to initialize a bond_opt_value structure for parameter * passing. There should be either a valid string or value, but not both. * When value is ULLONG_MAX then string will be used. */static inline void __bond_opt_init(struct bond_opt_value *optval,				   char *string, u64 value,				   void *extra, size_t extra_len){	memset(optval, 0, sizeof(*optval));	optval->value = ULLONG_MAX;	if (value != ULLONG_MAX)		optval->value = value;	else if (string)		optval->string = string; 	if (extra && extra_len <= BOND_OPT_EXTRA_MAXLEN)		memcpy(optval->extra, extra, extra_len);}#define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value, NULL, 0)#define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX, NULL, 0)#define bond_opt_initextra(optval, extra, extra_len) \	__bond_opt_init(optval, NULL, ULLONG_MAX, extra, extra_len)#define bond_opt_slave_initval(optval, slave_dev, value) \	__bond_opt_init(optval, NULL, value, slave_dev, sizeof(struct net_device *)) void bond_option_arp_ip_targets_clear(struct bonding *bond);#if IS_ENABLED(CONFIG_IPV6)void bond_option_ns_ip6_targets_clear(struct bonding *bond);#endifvoid bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave);void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave); #endif /* _NET_BOND_OPTIONS_H */