6791e4661c
This patch allows user to randomize the system-priority in an ad-system.
The allowed range is 1 - 0xFFFF while default value is 0xFFFF. If user
does not specify this value, the system defaults to 0xFFFF, which is
what it was before this patch.
Following example code could set the value -
# modprobe bonding mode=4
# sys_prio=$(( 1 + RANDOM + RANDOM ))
# echo $sys_prio > /sys/class/net/bond0/bonding/ad_actor_sys_prio
# echo +eth1 > /sys/class/net/bond0/bonding/slaves
...
# ip link set bond0 up
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
[jt: * fixed up style issues reported by checkpatch
* changed how the default value is set in bond_check_params(), this
makes the default consistent between what gets set for a new bond
and what the default is claimed to be in the bonding options.]
Signed-off-by: Jonathan Toppins <jtoppins@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
132 lines
3.7 KiB
C
132 lines
3.7 KiB
C
/*
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* drivers/net/bond/bond_options.h - bonding options
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* Copyright (c) 2013 Nikolay Aleksandrov <nikolay@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef _NET_BOND_OPTIONS_H
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#define _NET_BOND_OPTIONS_H
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#define BOND_OPT_MAX_NAMELEN 32
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#define BOND_OPT_VALID(opt) ((opt) < BOND_OPT_LAST)
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#define BOND_MODE_ALL_EX(x) (~(x))
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/* Option flags:
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* BOND_OPTFLAG_NOSLAVES - check if the bond device is empty before setting
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* BOND_OPTFLAG_IFDOWN - check if the bond device is down before setting
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* BOND_OPTFLAG_RAWVAL - the option parses the value itself
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*/
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enum {
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BOND_OPTFLAG_NOSLAVES = BIT(0),
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BOND_OPTFLAG_IFDOWN = BIT(1),
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BOND_OPTFLAG_RAWVAL = BIT(2)
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};
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/* Value type flags:
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* BOND_VALFLAG_DEFAULT - mark the value as default
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* BOND_VALFLAG_(MIN|MAX) - mark the value as min/max
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*/
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enum {
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BOND_VALFLAG_DEFAULT = BIT(0),
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BOND_VALFLAG_MIN = BIT(1),
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BOND_VALFLAG_MAX = BIT(2)
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};
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/* Option IDs, their bit positions correspond to their IDs */
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enum {
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BOND_OPT_MODE,
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BOND_OPT_PACKETS_PER_SLAVE,
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BOND_OPT_XMIT_HASH,
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BOND_OPT_ARP_VALIDATE,
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BOND_OPT_ARP_ALL_TARGETS,
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BOND_OPT_FAIL_OVER_MAC,
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BOND_OPT_ARP_INTERVAL,
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BOND_OPT_ARP_TARGETS,
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BOND_OPT_DOWNDELAY,
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BOND_OPT_UPDELAY,
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BOND_OPT_LACP_RATE,
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BOND_OPT_MINLINKS,
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BOND_OPT_AD_SELECT,
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BOND_OPT_NUM_PEER_NOTIF,
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BOND_OPT_MIIMON,
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BOND_OPT_PRIMARY,
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BOND_OPT_PRIMARY_RESELECT,
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BOND_OPT_USE_CARRIER,
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BOND_OPT_ACTIVE_SLAVE,
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BOND_OPT_QUEUE_ID,
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BOND_OPT_ALL_SLAVES_ACTIVE,
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BOND_OPT_RESEND_IGMP,
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BOND_OPT_LP_INTERVAL,
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BOND_OPT_SLAVES,
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BOND_OPT_TLB_DYNAMIC_LB,
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BOND_OPT_AD_ACTOR_SYS_PRIO,
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BOND_OPT_LAST
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};
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/* This structure is used for storing option values and for passing option
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* values when changing an option. The logic when used as an arg is as follows:
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* - if string != NULL -> parse it, if the opt is RAW type then return it, else
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* return the parse result
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* - if string == NULL -> parse value
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*/
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struct bond_opt_value {
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char *string;
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u64 value;
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u32 flags;
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};
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struct bonding;
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struct bond_option {
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int id;
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const char *name;
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const char *desc;
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u32 flags;
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/* unsuppmodes is used to denote modes in which the option isn't
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* supported.
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*/
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unsigned long unsuppmodes;
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/* supported values which this option can have, can be a subset of
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* BOND_OPTVAL_RANGE's value range
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*/
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const struct bond_opt_value *values;
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int (*set)(struct bonding *bond, const struct bond_opt_value *val);
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};
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int __bond_opt_set(struct bonding *bond, unsigned int option,
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struct bond_opt_value *val);
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int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf);
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const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
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struct bond_opt_value *val);
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const struct bond_option *bond_opt_get(unsigned int option);
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const struct bond_option *bond_opt_get_by_name(const char *name);
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const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val);
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/* This helper is used to initialize a bond_opt_value structure for parameter
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* passing. There should be either a valid string or value, but not both.
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* When value is ULLONG_MAX then string will be used.
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*/
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static inline void __bond_opt_init(struct bond_opt_value *optval,
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char *string, u64 value)
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{
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memset(optval, 0, sizeof(*optval));
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optval->value = ULLONG_MAX;
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if (value == ULLONG_MAX)
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optval->string = string;
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else
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optval->value = value;
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}
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#define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value)
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#define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX)
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void bond_option_arp_ip_targets_clear(struct bonding *bond);
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#endif /* _NET_BOND_OPTIONS_H */
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