// SPDX-License-Identifier: GPL-2.0-or-later
/*
* drivers / net / bond / bond_options . c - bonding options
* Copyright ( c ) 2013 Jiri Pirko < jiri @ resnulli . us >
* Copyright ( c ) 2013 Scott Feldman < sfeldma @ cumulusnetworks . com >
*/
#include <linux/errno.h>
#include <linux/if .h>
#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <linux/rcupdate.h>
#include <linux/ctype.h>
#include <linux/inet.h>
#include <linux/sched/signal.h>
#include <net/bonding.h>
#include <net/ndisc.h>
static int bond_option_active_slave_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_miimon_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_updelay_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_downdelay_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_peer_notif_delay_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_use_carrier_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_arp_interval_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target);
static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target);
static int bond_option_arp_ip_targets_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_ns_ip6_targets_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_arp_validate_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_arp_all_targets_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_prio_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_primary_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_primary_reselect_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_fail_over_mac_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_xmit_hash_policy_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_resend_igmp_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_num_peer_notif_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_all_slaves_active_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_min_links_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_lp_interval_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_pps_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_lacp_active_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_lacp_rate_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_ad_select_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_queue_id_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_mode_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_slaves_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_ad_actor_system_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_ad_user_port_key_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_missed_max_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_coupled_control_set(struct bonding *bond,
const struct bond_opt_value *newval);
static int bond_option_broadcast_neigh_set(struct bonding *bond,
const struct bond_opt_value *newval);
static const struct bond_opt_value bond_mode_tbl[] = {
{ "balance-rr" , BOND_MODE_ROUNDROBIN, BOND_VALFLAG_DEFAULT},
{ "active-backup" , BOND_MODE_ACTIVEBACKUP, 0 },
{ "balance-xor" , BOND_MODE_XOR, 0 },
{ "broadcast" , BOND_MODE_BROADCAST, 0 },
{ "802.3ad" , BOND_MODE_8023AD, 0 },
{ "balance-tlb" , BOND_MODE_TLB, 0 },
{ "balance-alb" , BOND_MODE_ALB, 0 },
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_pps_tbl[] = {
{ "default" , 1 , BOND_VALFLAG_DEFAULT},
{ "maxval" , USHRT_MAX, BOND_VALFLAG_MAX},
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_xmit_hashtype_tbl[] = {
{ "layer2" , BOND_XMIT_POLICY_LAYER2, BOND_VALFLAG_DEFAULT},
{ "layer3+4" , BOND_XMIT_POLICY_LAYER34, 0 },
{ "layer2+3" , BOND_XMIT_POLICY_LAYER23, 0 },
{ "encap2+3" , BOND_XMIT_POLICY_ENCAP23, 0 },
{ "encap3+4" , BOND_XMIT_POLICY_ENCAP34, 0 },
{ "vlan+srcmac" , BOND_XMIT_POLICY_VLAN_SRCMAC, 0 },
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_arp_validate_tbl[] = {
{ "none" , BOND_ARP_VALIDATE_NONE, BOND_VALFLAG_DEFAULT},
{ "active" , BOND_ARP_VALIDATE_ACTIVE, 0 },
{ "backup" , BOND_ARP_VALIDATE_BACKUP, 0 },
{ "all" , BOND_ARP_VALIDATE_ALL, 0 },
{ "filter" , BOND_ARP_FILTER, 0 },
{ "filter_active" , BOND_ARP_FILTER_ACTIVE, 0 },
{ "filter_backup" , BOND_ARP_FILTER_BACKUP, 0 },
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_arp_all_targets_tbl[] = {
{ "any" , BOND_ARP_TARGETS_ANY, BOND_VALFLAG_DEFAULT},
{ "all" , BOND_ARP_TARGETS_ALL, 0 },
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_fail_over_mac_tbl[] = {
{ "none" , BOND_FOM_NONE, BOND_VALFLAG_DEFAULT},
{ "active" , BOND_FOM_ACTIVE, 0 },
{ "follow" , BOND_FOM_FOLLOW, 0 },
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_intmax_tbl[] = {
{ "off" , 0 , BOND_VALFLAG_DEFAULT},
{ "maxval" , INT_MAX, BOND_VALFLAG_MAX},
{ NULL, -1 , 0 }
};
static const struct bond_opt_value bond_lacp_active[] = {
{ "off" , 0 , 0 },
{ "on" , 1 , BOND_VALFLAG_DEFAULT},
{ NULL, -1 , 0 }
};
static const struct bond_opt_value bond_lacp_rate_tbl[] = {
{ "slow" , AD_LACP_SLOW, 0 },
{ "fast" , AD_LACP_FAST, 0 },
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_ad_select_tbl[] = {
{ "stable" , BOND_AD_STABLE, BOND_VALFLAG_DEFAULT},
{ "bandwidth" , BOND_AD_BANDWIDTH, 0 },
{ "count" , BOND_AD_COUNT, 0 },
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_num_peer_notif_tbl[] = {
{ "off" , 0 , 0 },
{ "maxval" , 255 , BOND_VALFLAG_MAX},
{ "default" , 1 , BOND_VALFLAG_DEFAULT},
{ NULL, -1 , 0 }
};
static const struct bond_opt_value bond_peer_notif_delay_tbl[] = {
{ "off" , 0 , 0 },
{ "maxval" , 300000 , BOND_VALFLAG_MAX},
{ NULL, -1 , 0 }
};
static const struct bond_opt_value bond_primary_reselect_tbl[] = {
{ "always" , BOND_PRI_RESELECT_ALWAYS, BOND_VALFLAG_DEFAULT},
{ "better" , BOND_PRI_RESELECT_BETTER, 0 },
{ "failure" , BOND_PRI_RESELECT_FAILURE, 0 },
{ NULL, -1 },
};
static const struct bond_opt_value bond_use_carrier_tbl[] = {
{ "off" , 0 , 0 },
{ "on" , 1 , BOND_VALFLAG_DEFAULT},
{ NULL, -1 , 0 }
};
static const struct bond_opt_value bond_all_slaves_active_tbl[] = {
{ "off" , 0 , BOND_VALFLAG_DEFAULT},
{ "on" , 1 , 0 },
{ NULL, -1 , 0 }
};
static const struct bond_opt_value bond_resend_igmp_tbl[] = {
{ "off" , 0 , 0 },
{ "maxval" , 255 , BOND_VALFLAG_MAX},
{ "default" , 1 , BOND_VALFLAG_DEFAULT},
{ NULL, -1 , 0 }
};
static const struct bond_opt_value bond_lp_interval_tbl[] = {
{ "minval" , 1 , BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
{ "maxval" , INT_MAX, BOND_VALFLAG_MAX},
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_tlb_dynamic_lb_tbl[] = {
{ "off" , 0 , 0 },
{ "on" , 1 , BOND_VALFLAG_DEFAULT},
{ NULL, -1 , 0 }
};
static const struct bond_opt_value bond_ad_actor_sys_prio_tbl[] = {
{ "minval" , 1 , BOND_VALFLAG_MIN},
{ "maxval" , 65535 , BOND_VALFLAG_MAX | BOND_VALFLAG_DEFAULT},
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_ad_user_port_key_tbl[] = {
{ "minval" , 0 , BOND_VALFLAG_MIN | BOND_VALFLAG_DEFAULT},
{ "maxval" , 1023 , BOND_VALFLAG_MAX},
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_missed_max_tbl[] = {
{ "minval" , 1 , BOND_VALFLAG_MIN},
{ "maxval" , 255 , BOND_VALFLAG_MAX},
{ "default" , 2 , BOND_VALFLAG_DEFAULT},
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_coupled_control_tbl[] = {
{ "on" , 1 , BOND_VALFLAG_DEFAULT},
{ "off" , 0 , 0 },
{ NULL, -1 , 0 },
};
static const struct bond_opt_value bond_broadcast_neigh_tbl[] = {
{ "off" , 0 , BOND_VALFLAG_DEFAULT},
{ "on" , 1 , 0 },
{ NULL, -1 , 0 }
};
static const struct bond_option bond_opts[BOND_OPT_LAST] = {
[BOND_OPT_MODE] = {
.id = BOND_OPT_MODE,
.name = "mode" ,
.desc = "bond device mode" ,
.flags = BOND_OPTFLAG_NOSLAVES | BOND_OPTFLAG_IFDOWN,
.values = bond_mode_tbl,
.set = bond_option_mode_set
},
[BOND_OPT_PACKETS_PER_SLAVE] = {
.id = BOND_OPT_PACKETS_PER_SLAVE,
.name = "packets_per_slave" ,
.desc = "Packets to send per slave in RR mode" ,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ROUNDROBIN)),
.values = bond_pps_tbl,
.set = bond_option_pps_set
},
[BOND_OPT_XMIT_HASH] = {
.id = BOND_OPT_XMIT_HASH,
.name = "xmit_hash_policy" ,
.desc = "balance-xor, 802.3ad, and tlb hashing method" ,
.values = bond_xmit_hashtype_tbl,
.set = bond_option_xmit_hash_policy_set
},
[BOND_OPT_ARP_VALIDATE] = {
.id = BOND_OPT_ARP_VALIDATE,
.name = "arp_validate" ,
.desc = "validate src/dst of ARP probes" ,
.unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
BIT(BOND_MODE_ALB),
.values = bond_arp_validate_tbl,
.set = bond_option_arp_validate_set
},
[BOND_OPT_ARP_ALL_TARGETS] = {
.id = BOND_OPT_ARP_ALL_TARGETS,
.name = "arp_all_targets" ,
.desc = "fail on any/all arp targets timeout" ,
.values = bond_arp_all_targets_tbl,
.set = bond_option_arp_all_targets_set
},
[BOND_OPT_FAIL_OVER_MAC] = {
.id = BOND_OPT_FAIL_OVER_MAC,
.name = "fail_over_mac" ,
.desc = "For active-backup, do not set all slaves to the same MAC" ,
.flags = BOND_OPTFLAG_NOSLAVES,
.values = bond_fail_over_mac_tbl,
.set = bond_option_fail_over_mac_set
},
[BOND_OPT_ARP_INTERVAL] = {
.id = BOND_OPT_ARP_INTERVAL,
.name = "arp_interval" ,
.desc = "arp interval in milliseconds" ,
.unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
BIT(BOND_MODE_ALB),
.values = bond_intmax_tbl,
.set = bond_option_arp_interval_set
},
[BOND_OPT_MISSED_MAX] = {
.id = BOND_OPT_MISSED_MAX,
.name = "arp_missed_max" ,
.desc = "Maximum number of missed ARP interval" ,
.unsuppmodes = BIT(BOND_MODE_8023AD) | BIT(BOND_MODE_TLB) |
BIT(BOND_MODE_ALB),
.values = bond_missed_max_tbl,
.set = bond_option_missed_max_set
},
[BOND_OPT_ARP_TARGETS] = {
.id = BOND_OPT_ARP_TARGETS,
.name = "arp_ip_target" ,
.desc = "arp targets in n.n.n.n form" ,
.flags = BOND_OPTFLAG_RAWVAL,
.set = bond_option_arp_ip_targets_set
},
[BOND_OPT_NS_TARGETS] = {
.id = BOND_OPT_NS_TARGETS,
.name = "ns_ip6_target" ,
.desc = "NS targets in ffff:ffff::ffff:ffff form" ,
.flags = BOND_OPTFLAG_RAWVAL,
.set = bond_option_ns_ip6_targets_set
},
[BOND_OPT_DOWNDELAY] = {
.id = BOND_OPT_DOWNDELAY,
.name = "downdelay" ,
.desc = "Delay before considering link down, in milliseconds" ,
.values = bond_intmax_tbl,
.set = bond_option_downdelay_set
},
[BOND_OPT_UPDELAY] = {
.id = BOND_OPT_UPDELAY,
.name = "updelay" ,
.desc = "Delay before considering link up, in milliseconds" ,
.values = bond_intmax_tbl,
.set = bond_option_updelay_set
},
[BOND_OPT_LACP_ACTIVE] = {
.id = BOND_OPT_LACP_ACTIVE,
.name = "lacp_active" ,
.desc = "Send LACPDU frames with configured lacp rate or acts as speak when spoken to" ,
.flags = BOND_OPTFLAG_IFDOWN,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
.values = bond_lacp_active,
.set = bond_option_lacp_active_set
},
[BOND_OPT_LACP_RATE] = {
.id = BOND_OPT_LACP_RATE,
.name = "lacp_rate" ,
.desc = "LACPDU tx rate to request from 802.3ad partner" ,
.flags = BOND_OPTFLAG_IFDOWN,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
.values = bond_lacp_rate_tbl,
.set = bond_option_lacp_rate_set
},
[BOND_OPT_MINLINKS] = {
.id = BOND_OPT_MINLINKS,
.name = "min_links" ,
.desc = "Minimum number of available links before turning on carrier" ,
.values = bond_intmax_tbl,
.set = bond_option_min_links_set
},
[BOND_OPT_AD_SELECT] = {
.id = BOND_OPT_AD_SELECT,
.name = "ad_select" ,
.desc = "803.ad aggregation selection logic" ,
.flags = BOND_OPTFLAG_IFDOWN,
.values = bond_ad_select_tbl,
.set = bond_option_ad_select_set
},
[BOND_OPT_NUM_PEER_NOTIF] = {
.id = BOND_OPT_NUM_PEER_NOTIF,
.name = "num_unsol_na" ,
.desc = "Number of peer notifications to send on failover event" ,
.values = bond_num_peer_notif_tbl,
.set = bond_option_num_peer_notif_set
},
[BOND_OPT_MIIMON] = {
.id = BOND_OPT_MIIMON,
.name = "miimon" ,
.desc = "Link check interval in milliseconds" ,
.values = bond_intmax_tbl,
.set = bond_option_miimon_set
},
[BOND_OPT_PRIO] = {
.id = BOND_OPT_PRIO,
.name = "prio" ,
.desc = "Link priority for failover re-selection" ,
.flags = BOND_OPTFLAG_RAWVAL,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
BIT(BOND_MODE_TLB) |
BIT(BOND_MODE_ALB)),
.set = bond_option_prio_set
},
[BOND_OPT_PRIMARY] = {
.id = BOND_OPT_PRIMARY,
.name = "primary" ,
.desc = "Primary network device to use" ,
.flags = BOND_OPTFLAG_RAWVAL,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
BIT(BOND_MODE_TLB) |
BIT(BOND_MODE_ALB)),
.set = bond_option_primary_set
},
[BOND_OPT_PRIMARY_RESELECT] = {
.id = BOND_OPT_PRIMARY_RESELECT,
.name = "primary_reselect" ,
.desc = "Reselect primary slave once it comes up" ,
.values = bond_primary_reselect_tbl,
.set = bond_option_primary_reselect_set
},
[BOND_OPT_USE_CARRIER] = {
.id = BOND_OPT_USE_CARRIER,
.name = "use_carrier" ,
.desc = "Use netif_carrier_ok (vs MII ioctls) in miimon" ,
.values = bond_use_carrier_tbl,
.set = bond_option_use_carrier_set
},
[BOND_OPT_ACTIVE_SLAVE] = {
.id = BOND_OPT_ACTIVE_SLAVE,
.name = "active_slave" ,
.desc = "Currently active slave" ,
.flags = BOND_OPTFLAG_RAWVAL,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_ACTIVEBACKUP) |
BIT(BOND_MODE_TLB) |
BIT(BOND_MODE_ALB)),
.set = bond_option_active_slave_set
},
[BOND_OPT_QUEUE_ID] = {
.id = BOND_OPT_QUEUE_ID,
.name = "queue_id" ,
.desc = "Set queue id of a slave" ,
.flags = BOND_OPTFLAG_RAWVAL,
.set = bond_option_queue_id_set
},
[BOND_OPT_ALL_SLAVES_ACTIVE] = {
.id = BOND_OPT_ALL_SLAVES_ACTIVE,
.name = "all_slaves_active" ,
.desc = "Keep all frames received on an interface by setting active flag for all slaves" ,
.values = bond_all_slaves_active_tbl,
.set = bond_option_all_slaves_active_set
},
[BOND_OPT_RESEND_IGMP] = {
.id = BOND_OPT_RESEND_IGMP,
.name = "resend_igmp" ,
.desc = "Number of IGMP membership reports to send on link failure" ,
.values = bond_resend_igmp_tbl,
.set = bond_option_resend_igmp_set
},
[BOND_OPT_LP_INTERVAL] = {
.id = BOND_OPT_LP_INTERVAL,
.name = "lp_interval" ,
.desc = "The number of seconds between instances where the bonding driver sends learning packets to each slave's peer switch" ,
.values = bond_lp_interval_tbl,
.set = bond_option_lp_interval_set
},
[BOND_OPT_SLAVES] = {
.id = BOND_OPT_SLAVES,
.name = "slaves" ,
.desc = "Slave membership management" ,
.flags = BOND_OPTFLAG_RAWVAL,
.set = bond_option_slaves_set
},
[BOND_OPT_TLB_DYNAMIC_LB] = {
.id = BOND_OPT_TLB_DYNAMIC_LB,
.name = "tlb_dynamic_lb" ,
.desc = "Enable dynamic flow shuffling" ,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_TLB) | BIT(BOND_MODE_ALB)),
.values = bond_tlb_dynamic_lb_tbl,
.flags = BOND_OPTFLAG_IFDOWN,
.set = bond_option_tlb_dynamic_lb_set,
},
[BOND_OPT_AD_ACTOR_SYS_PRIO] = {
.id = BOND_OPT_AD_ACTOR_SYS_PRIO,
.name = "ad_actor_sys_prio" ,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
.values = bond_ad_actor_sys_prio_tbl,
.set = bond_option_ad_actor_sys_prio_set,
},
[BOND_OPT_AD_ACTOR_SYSTEM] = {
.id = BOND_OPT_AD_ACTOR_SYSTEM,
.name = "ad_actor_system" ,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
.flags = BOND_OPTFLAG_RAWVAL,
.set = bond_option_ad_actor_system_set,
},
[BOND_OPT_AD_USER_PORT_KEY] = {
.id = BOND_OPT_AD_USER_PORT_KEY,
.name = "ad_user_port_key" ,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
.flags = BOND_OPTFLAG_IFDOWN,
.values = bond_ad_user_port_key_tbl,
.set = bond_option_ad_user_port_key_set,
},
[BOND_OPT_NUM_PEER_NOTIF_ALIAS] = {
.id = BOND_OPT_NUM_PEER_NOTIF_ALIAS,
.name = "num_grat_arp" ,
.desc = "Number of peer notifications to send on failover event" ,
.values = bond_num_peer_notif_tbl,
.set = bond_option_num_peer_notif_set
},
[BOND_OPT_PEER_NOTIF_DELAY] = {
.id = BOND_OPT_PEER_NOTIF_DELAY,
.name = "peer_notif_delay" ,
.desc = "Delay between each peer notification on failover event, in milliseconds" ,
.values = bond_peer_notif_delay_tbl,
.set = bond_option_peer_notif_delay_set
},
[BOND_OPT_COUPLED_CONTROL] = {
.id = BOND_OPT_COUPLED_CONTROL,
.name = "coupled_control" ,
.desc = "Opt into using coupled control MUX for LACP states" ,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
.flags = BOND_OPTFLAG_IFDOWN,
.values = bond_coupled_control_tbl,
.set = bond_option_coupled_control_set,
},
[BOND_OPT_BROADCAST_NEIGH] = {
.id = BOND_OPT_BROADCAST_NEIGH,
.name = "broadcast_neighbor" ,
.desc = "Broadcast neighbor packets to all active slaves" ,
.unsuppmodes = BOND_MODE_ALL_EX(BIT(BOND_MODE_8023AD)),
.values = bond_broadcast_neigh_tbl,
.set = bond_option_broadcast_neigh_set,
}
};
/* Searches for an option by name */
const struct bond_option *bond_opt_get_by_name(const char *name)
{
const struct bond_option *opt;
int option;
for (option = 0 ; option < BOND_OPT_LAST; option++) {
opt = bond_opt_get(option);
if (opt && !strcmp(opt->name, name))
return opt;
}
return NULL;
}
/* Searches for a value in opt's values[] table */
const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val)
{
const struct bond_option *opt;
int i;
opt = bond_opt_get(option);
if (WARN_ON(!opt))
return NULL;
for (i = 0 ; opt->values && opt->values[i].string; i++)
if (opt->values[i].value == val)
return &opt->values[i];
return NULL;
}
/* Searches for a value in opt's values[] table which matches the flagmask */
static const struct bond_opt_value *bond_opt_get_flags(const struct bond_option *opt,
u32 flagmask)
{
int i;
for (i = 0 ; opt->values && opt->values[i].string; i++)
if (opt->values[i].flags & flagmask)
return &opt->values[i];
return NULL;
}
/* If maxval is missing then there's no range to check. In case minval is
* missing then it ' s considered to be 0 .
*/
static bool bond_opt_check_range(const struct bond_option *opt, u64 val)
{
const struct bond_opt_value *minval, *maxval;
minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
if (!maxval || (minval && val < minval->value) || val > maxval->value)
return false ;
return true ;
}
/**
* bond_opt_parse - parse option value
* @ opt : the option to parse against
* @ val : value to parse
*
* This function tries to extract the value from @ val and check if it ' s
* a possible match for the option and returns NULL if a match isn ' t found ,
* or the struct_opt_value that matched . It also strips the new line from
* @ val - > string if it ' s present .
*/
const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
struct bond_opt_value *val)
{
char *p, valstr[BOND_OPT_MAX_NAMELEN + 1 ] = { 0 , };
const struct bond_opt_value *tbl;
const struct bond_opt_value *ret = NULL;
bool checkval;
int i, rv;
/* No parsing if the option wants a raw val */
if (opt->flags & BOND_OPTFLAG_RAWVAL)
return val;
tbl = opt->values;
if (!tbl)
goto out;
/* ULLONG_MAX is used to bypass string processing */
checkval = val->value != ULLONG_MAX;
if (!checkval) {
if (!val->string)
goto out;
p = strchr(val->string, '\n' );
if (p)
*p = '\0' ;
for (p = val->string; *p; p++)
if (!(isdigit(*p) || isspace(*p)))
break ;
/* The following code extracts the string to match or the value
* and sets checkval appropriately
*/
if (*p) {
rv = sscanf(val->string, "%32s" , valstr);
} else {
rv = sscanf(val->string, "%llu" , &val->value);
checkval = true ;
}
if (!rv)
goto out;
}
for (i = 0 ; tbl[i].string; i++) {
/* Check for exact match */
if (checkval) {
if (val->value == tbl[i].value)
ret = &tbl[i];
} else {
if (!strcmp(valstr, "default" ) &&
(tbl[i].flags & BOND_VALFLAG_DEFAULT))
ret = &tbl[i];
if (!strcmp(valstr, tbl[i].string))
ret = &tbl[i];
}
/* Found an exact match */
if (ret)
goto out;
}
/* Possible range match */
if (checkval && bond_opt_check_range(opt, val->value))
ret = val;
out:
return ret;
}
/* Check opt's dependencies against bond mode and currently set options */
static int bond_opt_check_deps(struct bonding *bond,
const struct bond_option *opt)
{
struct bond_params *params = &bond->params;
if (test_bit(params->mode, &opt->unsuppmodes))
return -EACCES;
if ((opt->flags & BOND_OPTFLAG_NOSLAVES) && bond_has_slaves(bond))
return -ENOTEMPTY;
if ((opt->flags & BOND_OPTFLAG_IFDOWN) && (bond->dev->flags & IFF_UP))
return -EBUSY;
return 0 ;
}
static void bond_opt_dep_print(struct bonding *bond,
const struct bond_option *opt,
struct nlattr *bad_attr,
struct netlink_ext_ack *extack)
{
const struct bond_opt_value *modeval;
struct bond_params *params;
params = &bond->params;
modeval = bond_opt_get_val(BOND_OPT_MODE, params->mode);
if (test_bit(params->mode, &opt->unsuppmodes)) {
netdev_err(bond->dev, "option %s: mode dependency failed, not supported in mode %s(%llu)\n" ,
opt->name, modeval->string, modeval->value);
NL_SET_ERR_MSG_ATTR(extack, bad_attr,
"option not supported in mode" );
}
}
static void bond_opt_error_interpret(struct bonding *bond,
const struct bond_option *opt,
int error, const struct bond_opt_value *val,
struct nlattr *bad_attr,
struct netlink_ext_ack *extack)
{
const struct bond_opt_value *minval, *maxval;
char *p;
switch (error) {
case -EINVAL:
NL_SET_ERR_MSG_ATTR(extack, bad_attr, "invalid option value" );
if (val) {
if (val->string) {
/* sometimes RAWVAL opts may have new lines */
p = strchr(val->string, '\n' );
if (p)
*p = '\0' ;
netdev_err(bond->dev, "option %s: invalid value (%s)\n" ,
opt->name, val->string);
} else {
netdev_err(bond->dev, "option %s: invalid value (%llu)\n" ,
opt->name, val->value);
}
}
minval = bond_opt_get_flags(opt, BOND_VALFLAG_MIN);
maxval = bond_opt_get_flags(opt, BOND_VALFLAG_MAX);
if (!maxval)
break ;
netdev_err(bond->dev, "option %s: allowed values %llu - %llu\n" ,
opt->name, minval ? minval->value : 0 , maxval->value);
break ;
case -EACCES:
bond_opt_dep_print(bond, opt, bad_attr, extack);
break ;
case -ENOTEMPTY:
NL_SET_ERR_MSG_ATTR(extack, bad_attr,
"unable to set option because the bond device has slaves" );
netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n" ,
opt->name);
break ;
case -EBUSY:
NL_SET_ERR_MSG_ATTR(extack, bad_attr,
"unable to set option because the bond is up" );
netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n" ,
opt->name);
break ;
case -ENODEV:
if (val && val->string) {
p = strchr(val->string, '\n' );
if (p)
*p = '\0' ;
netdev_err(bond->dev, "option %s: interface %s does not exist!\n" ,
opt->name, val->string);
NL_SET_ERR_MSG_ATTR(extack, bad_attr,
"interface does not exist" );
}
break ;
default :
break ;
}
}
/**
* _ _ bond_opt_set - set a bonding option
* @ bond : target bond device
* @ option : option to set
* @ val : value to set it to
* @ bad_attr : netlink attribue that caused the error
* @ extack : extended netlink error structure , used when an error message
* needs to be returned to the caller via netlink
*
* This function is used to change the bond ' s option value , it can be
* used for both enabling / changing an option and for disabling it . RTNL lock
* must be obtained before calling this function .
*/
int __bond_opt_set(struct bonding *bond,
unsigned int option, struct bond_opt_value *val,
struct nlattr *bad_attr, struct netlink_ext_ack *extack)
{
const struct bond_opt_value *retval = NULL;
const struct bond_option *opt;
int ret = -ENOENT;
ASSERT_RTNL();
opt = bond_opt_get(option);
if (WARN_ON(!val) || WARN_ON(!opt))
goto out;
ret = bond_opt_check_deps(bond, opt);
if (ret)
goto out;
retval = bond_opt_parse(opt, val);
if (!retval) {
ret = -EINVAL;
goto out;
}
ret = opt->set(bond, retval);
out:
if (ret)
bond_opt_error_interpret(bond, opt, ret, val, bad_attr, extack);
return ret;
}
/**
* _ _ bond_opt_set_notify - set a bonding option
* @ bond : target bond device
* @ option : option to set
* @ val : value to set it to
*
* This function is used to change the bond ' s option value and trigger
* a notification to user sapce . It can be used for both enabling / changing
* an option and for disabling it . RTNL lock must be obtained before calling
* this function .
*/
int __bond_opt_set_notify(struct bonding *bond,
unsigned int option, struct bond_opt_value *val)
{
int ret;
ASSERT_RTNL();
ret = __bond_opt_set(bond, option, val, NULL, NULL);
if (!ret && (bond->dev->reg_state == NETREG_REGISTERED))
call_netdevice_notifiers(NETDEV_CHANGEINFODATA, bond->dev);
return ret;
}
/**
* bond_opt_tryset_rtnl - try to acquire rtnl and call _ _ bond_opt_set
* @ bond : target bond device
* @ option : option to set
* @ buf : value to set it to
*
* This function tries to acquire RTNL without blocking and if successful
* calls _ _ bond_opt_set . It is mainly used for sysfs option manipulation .
*/
int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf)
{
struct bond_opt_value optval;
int ret;
if (!rtnl_trylock())
return restart_syscall();
bond_opt_initstr(&optval, buf);
ret = __bond_opt_set_notify(bond, option, &optval);
rtnl_unlock();
return ret;
}
/**
* bond_opt_get - get a pointer to an option
* @ option : option for which to return a pointer
*
* This function checks if option is valid and if so returns a pointer
* to its entry in the bond_opts [ ] option array .
*/
const struct bond_option *bond_opt_get(unsigned int option)
{
if (!BOND_OPT_VALID(option))
return NULL;
return &bond_opts[option];
}
static bool bond_set_xfrm_features(struct bonding *bond)
{
if (!IS_ENABLED(CONFIG_XFRM_OFFLOAD))
return false ;
if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP)
bond->dev->wanted_features |= BOND_XFRM_FEATURES;
else
bond->dev->wanted_features &= ~BOND_XFRM_FEATURES;
return true ;
}
static int bond_option_mode_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
if (bond->xdp_prog && !bond_xdp_check(bond, newval->value))
return -EOPNOTSUPP;
if (!bond_mode_uses_arp(newval->value)) {
if (bond->params.arp_interval) {
netdev_dbg(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n" ,
newval->string);
/* disable arp monitoring */
bond->params.arp_interval = 0 ;
}
if (!bond->params.miimon) {
/* set miimon to default value */
bond->params.miimon = BOND_DEFAULT_MIIMON;
netdev_dbg(bond->dev, "Setting MII monitoring interval to %d\n" ,
bond->params.miimon);
}
}
if (newval->value == BOND_MODE_ALB)
bond->params.tlb_dynamic_lb = 1 ;
/* don't cache arp_validate between modes */
bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
bond->params.mode = newval->value;
/* When changing mode, the bond device is down, we may reduce
* the bond_bcast_neigh_enabled in bond_close ( ) if broadcast_neighbor
* enabled in 8023 ad mode . Therefore , only clear broadcast_neighbor
* to 0 .
*/
bond->params.broadcast_neighbor = 0 ;
if (bond->dev->reg_state == NETREG_REGISTERED) {
bool update = false ;
update |= bond_set_xfrm_features(bond);
if (update)
netdev_update_features(bond->dev);
}
bond_xdp_set_features(bond->dev);
return 0 ;
}
static int bond_option_active_slave_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
char ifname[IFNAMSIZ] = { 0 , };
struct net_device *slave_dev;
int ret = 0 ;
sscanf(newval->string, "%15s" , ifname); /* IFNAMSIZ */
if (!strlen(ifname) || newval->string[0 ] == '\n' ) {
slave_dev = NULL;
} else {
slave_dev = __dev_get_by_name(dev_net(bond->dev), ifname);
if (!slave_dev)
return -ENODEV;
}
if (slave_dev) {
if (!netif_is_bond_slave(slave_dev)) {
slave_err(bond->dev, slave_dev, "Device is not bonding slave\n" );
return -EINVAL;
}
if (bond->dev != netdev_master_upper_dev_get(slave_dev)) {
slave_err(bond->dev, slave_dev, "Device is not our slave\n" );
return -EINVAL;
}
}
block_netpoll_tx();
/* check to see if we are clearing active */
if (!slave_dev) {
netdev_dbg(bond->dev, "Clearing current active slave\n" );
bond_change_active_slave(bond, NULL);
bond_select_active_slave(bond);
} else {
struct slave *old_active = rtnl_dereference(bond->curr_active_slave);
struct slave *new_active = bond_slave_get_rtnl(slave_dev);
BUG_ON(!new_active);
if (new_active == old_active) {
/* do nothing */
slave_dbg(bond->dev, new_active->dev, "is already the current active slave\n" );
} else {
if (old_active && (new_active->link == BOND_LINK_UP) &&
bond_slave_is_up(new_active)) {
slave_dbg(bond->dev, new_active->dev, "Setting as active slave\n" );
bond_change_active_slave(bond, new_active);
} else {
slave_err(bond->dev, new_active->dev, "Could not set as active slave; either %s is down or the link is down\n" ,
new_active->dev->name);
ret = -EINVAL;
}
}
}
unblock_netpoll_tx();
return ret;
}
/* There are two tricky bits here. First, if MII monitoring is activated, then
* we must disable ARP monitoring . Second , if the timer isn ' t running , we must
* start it .
*/
static int bond_option_miimon_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting MII monitoring interval to %llu\n" ,
newval->value);
bond->params.miimon = newval->value;
if (bond->params.updelay)
netdev_dbg(bond->dev, "Note: Updating updelay (to %d) since it is a multiple of the miimon value\n" ,
bond->params.updelay * bond->params.miimon);
if (bond->params.downdelay)
netdev_dbg(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n" ,
bond->params.downdelay * bond->params.miimon);
if (bond->params.peer_notif_delay)
netdev_dbg(bond->dev, "Note: Updating peer_notif_delay (to %d) since it is a multiple of the miimon value\n" ,
bond->params.peer_notif_delay * bond->params.miimon);
if (newval->value && bond->params.arp_interval) {
netdev_dbg(bond->dev, "MII monitoring cannot be used with ARP monitoring - disabling ARP monitoring...\n" );
bond->params.arp_interval = 0 ;
if (bond->params.arp_validate)
bond->params.arp_validate = BOND_ARP_VALIDATE_NONE;
}
if (bond->dev->flags & IFF_UP) {
/* If the interface is up, we may need to fire off
* the MII timer . If the interface is down , the
* timer will get fired off when the open function
* is called .
*/
if (!newval->value) {
cancel_delayed_work_sync(&bond->mii_work);
} else {
cancel_delayed_work_sync(&bond->arp_work);
queue_delayed_work(bond->wq, &bond->mii_work, 0 );
}
}
return 0 ;
}
/* Set up, down and peer notification delays. These must be multiples
* of the MII monitoring value , and are stored internally as the
* multiplier . Thus , we must translate to MS for the real world .
*/
static int _bond_option_delay_set(struct bonding *bond,
const struct bond_opt_value *newval,
const char *name,
int *target)
{
int value = newval->value;
if (!bond->params.miimon) {
netdev_err(bond->dev, "Unable to set %s as MII monitoring is disabled\n" ,
name);
return -EPERM;
}
if ((value % bond->params.miimon) != 0 ) {
netdev_warn(bond->dev,
"%s (%d) is not a multiple of miimon (%d), value rounded to %d ms\n" ,
name,
value, bond->params.miimon,
(value / bond->params.miimon) *
bond->params.miimon);
}
*target = value / bond->params.miimon;
netdev_dbg(bond->dev, "Setting %s to %d\n" ,
name,
*target * bond->params.miimon);
return 0 ;
}
static int bond_option_updelay_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
return _bond_option_delay_set(bond, newval, "up delay" ,
&bond->params.updelay);
}
static int bond_option_downdelay_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
return _bond_option_delay_set(bond, newval, "down delay" ,
&bond->params.downdelay);
}
static int bond_option_peer_notif_delay_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
int ret = _bond_option_delay_set(bond, newval,
"peer notification delay" ,
&bond->params.peer_notif_delay);
return ret;
}
static int bond_option_use_carrier_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting use_carrier to %llu\n" ,
newval->value);
bond->params.use_carrier = newval->value;
return 0 ;
}
/* There are two tricky bits here. First, if ARP monitoring is activated, then
* we must disable MII monitoring . Second , if the ARP timer isn ' t running ,
* we must start it .
*/
static int bond_option_arp_interval_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting ARP monitoring interval to %llu\n" ,
newval->value);
bond->params.arp_interval = newval->value;
if (newval->value) {
if (bond->params.miimon) {
netdev_dbg(bond->dev, "ARP monitoring cannot be used with MII monitoring. Disabling MII monitoring\n" );
bond->params.miimon = 0 ;
}
if (!bond->params.arp_targets[0 ])
netdev_dbg(bond->dev, "ARP monitoring has been set up, but no ARP targets have been specified\n" );
}
if (bond->dev->flags & IFF_UP) {
/* If the interface is up, we may need to fire off
* the ARP timer . If the interface is down , the
* timer will get fired off when the open function
* is called .
*/
if (!newval->value) {
if (bond->params.arp_validate)
bond->recv_probe = NULL;
cancel_delayed_work_sync(&bond->arp_work);
} else {
/* arp_validate can be set only in active-backup mode */
bond->recv_probe = bond_rcv_validate;
cancel_delayed_work_sync(&bond->mii_work);
queue_delayed_work(bond->wq, &bond->arp_work, 0 );
}
}
return 0 ;
}
static void _bond_options_arp_ip_target_set(struct bonding *bond, int slot,
__be32 target,
unsigned long last_rx)
{
__be32 *targets = bond->params.arp_targets;
struct list_head *iter;
struct slave *slave;
if (slot >= 0 && slot < BOND_MAX_ARP_TARGETS) {
bond_for_each_slave(bond, slave, iter)
slave->target_last_arp_rx[slot] = last_rx;
targets[slot] = target;
}
}
static int _bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
{
__be32 *targets = bond->params.arp_targets;
int ind;
if (!bond_is_ip_target_ok(target)) {
netdev_err(bond->dev, "invalid ARP target %pI4 specified for addition\n" ,
&target);
return -EINVAL;
}
if (bond_get_targets_ip(targets, target) != -1 ) { /* dup */
netdev_err(bond->dev, "ARP target %pI4 is already present\n" ,
&target);
return -EINVAL;
}
ind = bond_get_targets_ip(targets, 0 ); /* first free slot */
if (ind == -1 ) {
netdev_err(bond->dev, "ARP target table is full!\n" );
return -EINVAL;
}
netdev_dbg(bond->dev, "Adding ARP target %pI4\n" , &target);
_bond_options_arp_ip_target_set(bond, ind, target, jiffies);
return 0 ;
}
static int bond_option_arp_ip_target_add(struct bonding *bond, __be32 target)
{
return _bond_option_arp_ip_target_add(bond, target);
}
static int bond_option_arp_ip_target_rem(struct bonding *bond, __be32 target)
{
__be32 *targets = bond->params.arp_targets;
struct list_head *iter;
struct slave *slave;
unsigned long *targets_rx;
int ind, i;
if (!bond_is_ip_target_ok(target)) {
netdev_err(bond->dev, "invalid ARP target %pI4 specified for removal\n" ,
&target);
return -EINVAL;
}
ind = bond_get_targets_ip(targets, target);
if (ind == -1 ) {
netdev_err(bond->dev, "unable to remove nonexistent ARP target %pI4\n" ,
&target);
return -EINVAL;
}
if (ind == 0 && !targets[1 ] && bond->params.arp_interval)
netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n" );
netdev_dbg(bond->dev, "Removing ARP target %pI4\n" , &target);
bond_for_each_slave(bond, slave, iter) {
targets_rx = slave->target_last_arp_rx;
for (i = ind; (i < BOND_MAX_ARP_TARGETS-1 ) && targets[i+1 ]; i++)
targets_rx[i] = targets_rx[i+1 ];
targets_rx[i] = 0 ;
}
for (i = ind; (i < BOND_MAX_ARP_TARGETS-1 ) && targets[i+1 ]; i++)
targets[i] = targets[i+1 ];
targets[i] = 0 ;
return 0 ;
}
void bond_option_arp_ip_targets_clear(struct bonding *bond)
{
int i;
for (i = 0 ; i < BOND_MAX_ARP_TARGETS; i++)
_bond_options_arp_ip_target_set(bond, i, 0 , 0 );
}
static int bond_option_arp_ip_targets_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
int ret = -EPERM;
__be32 target;
if (newval->string) {
if (strlen(newval->string) < 1 ||
!in4_pton(newval->string + 1 , -1 , (u8 *)&target, -1 , NULL)) {
netdev_err(bond->dev, "invalid ARP target specified\n" );
return ret;
}
if (newval->string[0 ] == '+' )
ret = bond_option_arp_ip_target_add(bond, target);
else if (newval->string[0 ] == '-' )
ret = bond_option_arp_ip_target_rem(bond, target);
else
netdev_err(bond->dev, "no command found in arp_ip_targets file - use +<addr> or -<addr>\n" );
} else {
target = newval->value;
ret = bond_option_arp_ip_target_add(bond, target);
}
return ret;
}
#if IS_ENABLED(CONFIG_IPV6)
static bool slave_can_set_ns_maddr(const struct bonding *bond, struct slave *slave)
{
return BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
!bond_is_active_slave(slave) &&
slave->dev->flags & IFF_MULTICAST;
}
/**
* slave_set_ns_maddrs - add / del all NS mac addresses for slave
* @ bond : bond device
* @ slave : slave device
* @ add : add or remove all the NS mac addresses
*
* This function tries to add or delete all the NS mac addresses on the slave
*
* Note , the IPv6 NS target address is the unicast address in Neighbor
* Solicitation ( NS ) message . The dest address of NS message should be
* solicited - node multicast address of the target . The dest mac of NS message
* is converted from the solicited - node multicast address .
*
* This function is called when
* * arp_validate changes
* * enslaving , releasing new slaves
*/
static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool add)
{
struct in6_addr *targets = bond->params.ns_targets;
char slot_maddr[MAX_ADDR_LEN];
struct in6_addr mcaddr;
int i;
if (!slave_can_set_ns_maddr(bond, slave))
return ;
for (i = 0 ; i < BOND_MAX_NS_TARGETS; i++) {
if (ipv6_addr_any(&targets[i]))
break ;
addrconf_addr_solict_mult(&targets[i], &mcaddr);
if (!ndisc_mc_map(&mcaddr, slot_maddr, slave->dev, 0 )) {
if (add)
dev_mc_add(slave->dev, slot_maddr);
else
dev_mc_del(slave->dev, slot_maddr);
}
}
}
void bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave)
{
if (!bond->params.arp_validate)
return ;
slave_set_ns_maddrs(bond, slave, true );
}
void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave)
{
if (!bond->params.arp_validate)
return ;
slave_set_ns_maddrs(bond, slave, false );
}
/**
* slave_set_ns_maddr - set new NS mac address for slave
* @ bond : bond device
* @ slave : slave device
* @ target : the new IPv6 target
* @ slot : the old IPv6 target in the slot
*
* This function tries to replace the old mac address to new one on the slave .
*
* Note , the target / slot IPv6 address is the unicast address in Neighbor
* Solicitation ( NS ) message . The dest address of NS message should be
* solicited - node multicast address of the target . The dest mac of NS message
* is converted from the solicited - node multicast address .
*
* This function is called when
* * An IPv6 NS target is added or removed .
*/
static void slave_set_ns_maddr(struct bonding *bond, struct slave *slave,
struct in6_addr *target, struct in6_addr *slot)
{
char mac_addr[MAX_ADDR_LEN];
struct in6_addr mcast_addr;
if (!bond->params.arp_validate || !slave_can_set_ns_maddr(bond, slave))
return ;
/* remove the previous mac addr from slave */
addrconf_addr_solict_mult(slot, &mcast_addr);
if (!ipv6_addr_any(slot) &&
!ndisc_mc_map(&mcast_addr, mac_addr, slave->dev, 0 ))
dev_mc_del(slave->dev, mac_addr);
/* add new mac addr on slave if target is set */
addrconf_addr_solict_mult(target, &mcast_addr);
if (!ipv6_addr_any(target) &&
!ndisc_mc_map(&mcast_addr, mac_addr, slave->dev, 0 ))
dev_mc_add(slave->dev, mac_addr);
}
static void _bond_options_ns_ip6_target_set(struct bonding *bond, int slot,
struct in6_addr *target,
unsigned long last_rx)
{
struct in6_addr *targets = bond->params.ns_targets;
struct list_head *iter;
struct slave *slave;
if (slot >= 0 && slot < BOND_MAX_NS_TARGETS) {
bond_for_each_slave(bond, slave, iter) {
slave->target_last_arp_rx[slot] = last_rx;
slave_set_ns_maddr(bond, slave, target, &targets[slot]);
}
targets[slot] = *target;
}
}
void bond_option_ns_ip6_targets_clear(struct bonding *bond)
{
struct in6_addr addr_any = in6addr_any;
int i;
for (i = 0 ; i < BOND_MAX_NS_TARGETS; i++)
_bond_options_ns_ip6_target_set(bond, i, &addr_any, 0 );
}
static int bond_option_ns_ip6_targets_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
struct in6_addr *target = (struct in6_addr *)newval->extra;
struct in6_addr *targets = bond->params.ns_targets;
struct in6_addr addr_any = in6addr_any;
int index;
if (!bond_is_ip6_target_ok(target)) {
netdev_err(bond->dev, "invalid NS target %pI6c specified for addition\n" ,
target);
return -EINVAL;
}
if (bond_get_targets_ip6(targets, target) != -1 ) { /* dup */
netdev_err(bond->dev, "NS target %pI6c is already present\n" ,
target);
return -EINVAL;
}
index = bond_get_targets_ip6(targets, &addr_any); /* first free slot */
if (index == -1 ) {
netdev_err(bond->dev, "NS target table is full!\n" );
return -EINVAL;
}
netdev_dbg(bond->dev, "Adding NS target %pI6c\n" , target);
_bond_options_ns_ip6_target_set(bond, index, target, jiffies);
return 0 ;
}
#else
static int bond_option_ns_ip6_targets_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
return -EPERM;
}
static void slave_set_ns_maddrs(struct bonding *bond, struct slave *slave, bool add) {}
void bond_slave_ns_maddrs_add(struct bonding *bond, struct slave *slave) {}
void bond_slave_ns_maddrs_del(struct bonding *bond, struct slave *slave) {}
#endif
static int bond_option_arp_validate_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
bool changed = !!bond->params.arp_validate != !!newval->value;
struct list_head *iter;
struct slave *slave;
netdev_dbg(bond->dev, "Setting arp_validate to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.arp_validate = newval->value;
if (changed) {
bond_for_each_slave(bond, slave, iter)
slave_set_ns_maddrs(bond, slave, !!bond->params.arp_validate);
}
return 0 ;
}
static int bond_option_arp_all_targets_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting arp_all_targets to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.arp_all_targets = newval->value;
return 0 ;
}
static int bond_option_missed_max_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting missed max to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.missed_max = newval->value;
return 0 ;
}
static int bond_option_prio_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
struct slave *slave;
slave = bond_slave_get_rtnl(newval->slave_dev);
if (!slave) {
netdev_dbg(newval->slave_dev, "%s called on NULL slave\n" , __func__);
return -ENODEV;
}
slave->prio = newval->value;
if (rtnl_dereference(bond->primary_slave))
slave_warn(bond->dev, slave->dev,
"prio updated, but will not affect failover re-selection as primary slave have been set\n" );
else
bond_select_active_slave(bond);
return 0 ;
}
static int bond_option_primary_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
char *p, *primary = newval->string;
struct list_head *iter;
struct slave *slave;
block_netpoll_tx();
p = strchr(primary, '\n' );
if (p)
*p = '\0' ;
/* check to see if we are clearing primary */
if (!strlen(primary)) {
netdev_dbg(bond->dev, "Setting primary slave to None\n" );
RCU_INIT_POINTER(bond->primary_slave, NULL);
memset(bond->params.primary, 0 , sizeof (bond->params.primary));
bond_select_active_slave(bond);
goto out;
}
bond_for_each_slave(bond, slave, iter) {
if (strncmp(slave->dev->name, primary, IFNAMSIZ) == 0 ) {
slave_dbg(bond->dev, slave->dev, "Setting as primary slave\n" );
rcu_assign_pointer(bond->primary_slave, slave);
strcpy(bond->params.primary, slave->dev->name);
bond->force_primary = true ;
bond_select_active_slave(bond);
goto out;
}
}
if (rtnl_dereference(bond->primary_slave)) {
netdev_dbg(bond->dev, "Setting primary slave to None\n" );
RCU_INIT_POINTER(bond->primary_slave, NULL);
bond_select_active_slave(bond);
}
strscpy_pad(bond->params.primary, primary, IFNAMSIZ);
netdev_dbg(bond->dev, "Recording %s as primary, but it has not been enslaved yet\n" ,
primary);
out:
unblock_netpoll_tx();
return 0 ;
}
static int bond_option_primary_reselect_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting primary_reselect to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.primary_reselect = newval->value;
block_netpoll_tx();
bond_select_active_slave(bond);
unblock_netpoll_tx();
return 0 ;
}
static int bond_option_fail_over_mac_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting fail_over_mac to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.fail_over_mac = newval->value;
return 0 ;
}
static int bond_option_xmit_hash_policy_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting xmit hash policy to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.xmit_policy = newval->value;
return 0 ;
}
static int bond_option_resend_igmp_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting resend_igmp to %llu\n" ,
newval->value);
bond->params.resend_igmp = newval->value;
return 0 ;
}
static int bond_option_num_peer_notif_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
bond->params.num_peer_notif = newval->value;
return 0 ;
}
static int bond_option_all_slaves_active_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
struct list_head *iter;
struct slave *slave;
if (newval->value == bond->params.all_slaves_active)
return 0 ;
bond->params.all_slaves_active = newval->value;
bond_for_each_slave(bond, slave, iter) {
if (!bond_is_active_slave(slave)) {
if (newval->value)
slave->inactive = 0 ;
else
slave->inactive = 1 ;
}
}
return 0 ;
}
static int bond_option_min_links_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting min links value to %llu\n" ,
newval->value);
bond->params.min_links = newval->value;
bond_set_carrier(bond);
return 0 ;
}
static int bond_option_lp_interval_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
bond->params.lp_interval = newval->value;
return 0 ;
}
static int bond_option_pps_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting packets per slave to %llu\n" ,
newval->value);
bond->params.packets_per_slave = newval->value;
if (newval->value > 0 ) {
bond->params.reciprocal_packets_per_slave =
reciprocal_value(newval->value);
} else {
/* reciprocal_packets_per_slave is unused if
* packets_per_slave is 0 or 1 , just initialize it
*/
bond->params.reciprocal_packets_per_slave =
(struct reciprocal_value) { 0 };
}
return 0 ;
}
static int bond_option_lacp_active_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting LACP active to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.lacp_active = newval->value;
bond_3ad_update_lacp_active(bond);
return 0 ;
}
static int bond_option_lacp_rate_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting LACP rate to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.lacp_fast = newval->value;
bond_3ad_update_lacp_rate(bond);
return 0 ;
}
static int bond_option_ad_select_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting ad_select to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.ad_select = newval->value;
return 0 ;
}
static int bond_option_queue_id_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
struct slave *slave, *update_slave;
struct net_device *sdev;
struct list_head *iter;
char *delim;
int ret = 0 ;
u16 qid;
/* delim will point to queue id if successful */
delim = strchr(newval->string, ':' );
if (!delim)
goto err_no_cmd;
/* Terminate string that points to device name and bump it
* up one , so we can read the queue id there .
*/
*delim = '\0' ;
if (sscanf(++delim, "%hd\n" , &qid) != 1 )
goto err_no_cmd;
/* Check buffer length, valid ifname and queue id */
if (!dev_valid_name(newval->string) ||
qid > bond->dev->real_num_tx_queues)
goto err_no_cmd;
/* Get the pointer to that interface if it exists */
sdev = __dev_get_by_name(dev_net(bond->dev), newval->string);
if (!sdev)
goto err_no_cmd;
/* Search for thes slave and check for duplicate qids */
update_slave = NULL;
bond_for_each_slave(bond, slave, iter) {
if (sdev == slave->dev)
/* We don't need to check the matching
* slave for dups , since we ' re overwriting it
*/
update_slave = slave;
else if (qid && qid == slave->queue_id) {
goto err_no_cmd;
}
}
if (!update_slave)
goto err_no_cmd;
/* Actually set the qids for the slave */
WRITE_ONCE(update_slave->queue_id, qid);
out:
return ret;
err_no_cmd:
netdev_dbg(bond->dev, "invalid input for queue_id set\n" );
ret = -EPERM;
goto out;
}
static int bond_option_slaves_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
char command[IFNAMSIZ + 1 ] = { 0 , };
struct net_device *dev;
char *ifname;
int ret;
sscanf(newval->string, "%16s" , command); /* IFNAMSIZ*/
ifname = command + 1 ;
if ((strlen(command) <= 1 ) ||
(command[0 ] != '+' && command[0 ] != '-' ) ||
!dev_valid_name(ifname))
goto err_no_cmd;
dev = __dev_get_by_name(dev_net(bond->dev), ifname);
if (!dev) {
netdev_dbg(bond->dev, "interface %s does not exist!\n" ,
ifname);
ret = -ENODEV;
goto out;
}
switch (command[0 ]) {
case '+' :
slave_dbg(bond->dev, dev, "Enslaving interface\n" );
ret = bond_enslave(bond->dev, dev, NULL);
break ;
case '-' :
slave_dbg(bond->dev, dev, "Releasing interface\n" );
ret = bond_release(bond->dev, dev);
break ;
default :
/* should not run here. */
goto err_no_cmd;
}
out:
return ret;
err_no_cmd:
netdev_err(bond->dev, "no command found in slaves file - use +ifname or -ifname\n" );
ret = -EPERM;
goto out;
}
static int bond_option_tlb_dynamic_lb_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting dynamic-lb to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.tlb_dynamic_lb = newval->value;
return 0 ;
}
static int bond_option_ad_actor_sys_prio_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting ad_actor_sys_prio to %llu\n" ,
newval->value);
bond->params.ad_actor_sys_prio = newval->value;
bond_3ad_update_ad_actor_settings(bond);
return 0 ;
}
static int bond_option_ad_actor_system_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
u8 macaddr[ETH_ALEN];
u8 *mac;
if (newval->string) {
if (!mac_pton(newval->string, macaddr))
goto err;
mac = macaddr;
} else {
mac = (u8 *)&newval->value;
}
if (is_multicast_ether_addr(mac))
goto err;
netdev_dbg(bond->dev, "Setting ad_actor_system to %pM\n" , mac);
ether_addr_copy(bond->params.ad_actor_system, mac);
bond_3ad_update_ad_actor_settings(bond);
return 0 ;
err:
netdev_err(bond->dev, "Invalid ad_actor_system MAC address.\n" );
return -EINVAL;
}
static int bond_option_ad_user_port_key_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_dbg(bond->dev, "Setting ad_user_port_key to %llu\n" ,
newval->value);
bond->params.ad_user_port_key = newval->value;
return 0 ;
}
static int bond_option_coupled_control_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
netdev_info(bond->dev, "Setting coupled_control to %s (%llu)\n" ,
newval->string, newval->value);
bond->params.coupled_control = newval->value;
return 0 ;
}
static int bond_option_broadcast_neigh_set(struct bonding *bond,
const struct bond_opt_value *newval)
{
if (bond->params.broadcast_neighbor == newval->value)
return 0 ;
bond->params.broadcast_neighbor = newval->value;
if (bond->dev->flags & IFF_UP) {
if (bond->params.broadcast_neighbor)
static_branch_inc(&bond_bcast_neigh_enabled);
else
static_branch_dec(&bond_bcast_neigh_enabled);
}
netdev_dbg(bond->dev, "Setting broadcast_neighbor to %s (%llu)\n" ,
newval->string, newval->value);
return 0 ;
}
Messung V0.5 in Prozent C=96 H=94 G=94
¤ Dauer der Verarbeitung: 0.29 Sekunden
(vorverarbeitet am 2026-09-28)
¤
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