cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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bond_options.h (4365B)

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