[deliverable/linux.git] / drivers / net / bonding / bond_options.h

/*
 * drivers/net/bond/bond_options.h - bonding options
 * Copyright (c) 2013 Nikolay Aleksandrov <nikolay@redhat.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef _BOND_OPTIONS_H
#define _BOND_OPTIONS_H

#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_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 string != NULL -> parse it, if the opt is RAW type then return it, else
 *   return the parse result
 * - if string == NULL -> parse value
 */
struct bond_opt_value {
	char *string;
	u64 value;
	u32 flags;
};

struct bonding;

struct bond_option {
	int id;
	char *name;
	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
	 */
	struct bond_opt_value *values;

	int (*set)(struct bonding *bond, struct bond_opt_value *val);
};

int __bond_opt_set(struct bonding *bond, unsigned int option,
		   struct bond_opt_value *val);
int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf);
struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
				      struct bond_opt_value *val);
struct bond_option *bond_opt_get(unsigned int option);
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)
{
	memset(optval, 0, sizeof(*optval));
	optval->value = ULLONG_MAX;
	if (value == ULLONG_MAX)
		optval->string = string;
	else
		optval->value = value;
}
#define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value)
#define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX)

int bond_option_mode_set(struct bonding *bond, struct bond_opt_value *newval);
int bond_option_pps_set(struct bonding *bond, struct bond_opt_value *newval);
int bond_option_xmit_hash_policy_set(struct bonding *bond,
				     struct bond_opt_value *newval);
int bond_option_arp_validate_set(struct bonding *bond,
				 struct bond_opt_value *newval);
int bond_option_arp_all_targets_set(struct bonding *bond,
				    struct bond_opt_value *newval);
#endif /* _BOND_OPTIONS_H */
Commit	Line	Data
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,
a4b32ce7	43	BOND_OPT_XMIT_HASH,
16228881	44	BOND_OPT_ARP_VALIDATE,
edf36b24	45	BOND_OPT_ARP_ALL_TARGETS,
09117362 NA	46	BOND_OPT_LAST
	47	};
	48
	49	/* This structure is used for storing option values and for passing option
	50	* values when changing an option. The logic when used as an arg is as follows:
	51	* - if string != NULL -> parse it, if the opt is RAW type then return it, else
	52	* return the parse result
	53	* - if string == NULL -> parse value
	54	*/
	55	struct bond_opt_value {
	56	char *string;
	57	u64 value;
	58	u32 flags;
	59	};
	60
	61	struct bonding;
	62
	63	struct bond_option {
	64	int id;
	65	char *name;
	66	char *desc;
	67	u32 flags;
	68
	69	/* unsuppmodes is used to denote modes in which the option isn't
	70	* supported.
	71	*/
	72	unsigned long unsuppmodes;
	73	/* supported values which this option can have, can be a subset of
	74	* BOND_OPTVAL_RANGE's value range
	75	*/
	76	struct bond_opt_value *values;
	77
	78	int (set)(struct bonding bond, struct bond_opt_value *val);
	79	};
	80
	81	int __bond_opt_set(struct bonding *bond, unsigned int option,
	82	struct bond_opt_value *val);
	83	int bond_opt_tryset_rtnl(struct bonding bond, unsigned int option, char buf);
	84	struct bond_opt_value bond_opt_parse(const struct bond_option opt,
	85	struct bond_opt_value *val);
	86	struct bond_option *bond_opt_get(unsigned int option);
	87	struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val);
	88
	89	/* This helper is used to initialize a bond_opt_value structure for parameter
	90	* passing. There should be either a valid string or value, but not both.
	91	* When value is ULLONG_MAX then string will be used.
	92	*/
	93	static inline void __bond_opt_init(struct bond_opt_value *optval,
	94	char *string, u64 value)
	95	{
	96	memset(optval, 0, sizeof(*optval));
	97	optval->value = ULLONG_MAX;
	98	if (value == ULLONG_MAX)
	99	optval->string = string;
	100	else
	101	optval->value = value;
	102	}
	103	#define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value)
	104	#define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX)
2b3798d5 NA	105
2b3798d5 NA	106	int bond_option_mode_set(struct bonding bond, struct bond_opt_value newval);
aa59d851	107	int bond_option_pps_set(struct bonding bond, struct bond_opt_value newval);
a4b32ce7 NA	108	int bond_option_xmit_hash_policy_set(struct bonding *bond,
a4b32ce7 NA	109	struct bond_opt_value *newval);
16228881 NA	110	int bond_option_arp_validate_set(struct bonding *bond,
16228881 NA	111	struct bond_opt_value *newval);
edf36b24 NA	112	int bond_option_arp_all_targets_set(struct bonding *bond,
edf36b24 NA	113	struct bond_opt_value *newval);
09117362	114	#endif /* _BOND_OPTIONS_H */