| /* |
| * drivers/net/bond/bond_options.c - bonding options |
| * Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us> |
| * Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.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. |
| */ |
| |
| #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 "bonding.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_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_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_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_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 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}, |
| { 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_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_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_option bond_opts[] = { |
| [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_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_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_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_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)), |
| .values = bond_tlb_dynamic_lb_tbl, |
| .flags = BOND_OPTFLAG_IFDOWN, |
| .set = bond_option_tlb_dynamic_lb_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) |
| { |
| 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); |
| } |
| |
| static void bond_opt_error_interpret(struct bonding *bond, |
| const struct bond_option *opt, |
| int error, const struct bond_opt_value *val) |
| { |
| const struct bond_opt_value *minval, *maxval; |
| char *p; |
| |
| switch (error) { |
| case -EINVAL: |
| 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); |
| break; |
| case -ENOTEMPTY: |
| netdev_err(bond->dev, "option %s: unable to set because the bond device has slaves\n", |
| opt->name); |
| break; |
| case -EBUSY: |
| netdev_err(bond->dev, "option %s: unable to set because the bond device is up\n", |
| opt->name); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /** |
| * __bond_opt_set - 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, 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) |
| { |
| 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); |
| else |
| 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(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 int bond_option_mode_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| if (!bond_mode_uses_arp(newval->value) && bond->params.arp_interval) { |
| netdev_info(bond->dev, "%s mode is incompatible with arp monitoring, start mii monitoring\n", |
| newval->string); |
| /* disable arp monitoring */ |
| bond->params.arp_interval = 0; |
| /* set miimon to default value */ |
| bond->params.miimon = BOND_DEFAULT_MIIMON; |
| netdev_info(bond->dev, "Setting MII monitoring interval to %d\n", |
| bond->params.miimon); |
| } |
| |
| /* don't cache arp_validate between modes */ |
| bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; |
| bond->params.mode = newval->value; |
| |
| return 0; |
| } |
| |
| static struct net_device *__bond_option_active_slave_get(struct bonding *bond, |
| struct slave *slave) |
| { |
| return bond_uses_primary(bond) && slave ? slave->dev : NULL; |
| } |
| |
| struct net_device *bond_option_active_slave_get_rcu(struct bonding *bond) |
| { |
| struct slave *slave = rcu_dereference(bond->curr_active_slave); |
| |
| return __bond_option_active_slave_get(bond, slave); |
| } |
| |
| 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)) { |
| netdev_err(bond->dev, "Device %s is not bonding slave\n", |
| slave_dev->name); |
| return -EINVAL; |
| } |
| |
| if (bond->dev != netdev_master_upper_dev_get(slave_dev)) { |
| netdev_err(bond->dev, "Device %s is not our slave\n", |
| slave_dev->name); |
| return -EINVAL; |
| } |
| } |
| |
| block_netpoll_tx(); |
| write_lock_bh(&bond->curr_slave_lock); |
| |
| /* check to see if we are clearing active */ |
| if (!slave_dev) { |
| netdev_info(bond->dev, "Clearing current active slave\n"); |
| RCU_INIT_POINTER(bond->curr_active_slave, NULL); |
| bond_select_active_slave(bond); |
| } else { |
| struct slave *old_active = bond_deref_active_protected(bond); |
| struct slave *new_active = bond_slave_get_rtnl(slave_dev); |
| |
| BUG_ON(!new_active); |
| |
| if (new_active == old_active) { |
| /* do nothing */ |
| netdev_info(bond->dev, "%s is already the current active slave\n", |
| new_active->dev->name); |
| } else { |
| if (old_active && (new_active->link == BOND_LINK_UP) && |
| bond_slave_is_up(new_active)) { |
| netdev_info(bond->dev, "Setting %s as active slave\n", |
| new_active->dev->name); |
| bond_change_active_slave(bond, new_active); |
| } else { |
| netdev_err(bond->dev, "Could not set %s as active slave; either %s is down or the link is down\n", |
| new_active->dev->name, |
| new_active->dev->name); |
| ret = -EINVAL; |
| } |
| } |
| } |
| |
| write_unlock_bh(&bond->curr_slave_lock); |
| 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_info(bond->dev, "Setting MII monitoring interval to %llu\n", |
| newval->value); |
| bond->params.miimon = newval->value; |
| if (bond->params.updelay) |
| netdev_info(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_info(bond->dev, "Note: Updating downdelay (to %d) since it is a multiple of the miimon value\n", |
| bond->params.downdelay * bond->params.miimon); |
| if (newval->value && bond->params.arp_interval) { |
| netdev_info(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 and down 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_updelay_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| int value = newval->value; |
| |
| if (!bond->params.miimon) { |
| netdev_err(bond->dev, "Unable to set up delay as MII monitoring is disabled\n"); |
| return -EPERM; |
| } |
| if ((value % bond->params.miimon) != 0) { |
| netdev_warn(bond->dev, "up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", |
| value, bond->params.miimon, |
| (value / bond->params.miimon) * |
| bond->params.miimon); |
| } |
| bond->params.updelay = value / bond->params.miimon; |
| netdev_info(bond->dev, "Setting up delay to %d\n", |
| bond->params.updelay * bond->params.miimon); |
| |
| return 0; |
| } |
| |
| static int bond_option_downdelay_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| int value = newval->value; |
| |
| if (!bond->params.miimon) { |
| netdev_err(bond->dev, "Unable to set down delay as MII monitoring is disabled\n"); |
| return -EPERM; |
| } |
| if ((value % bond->params.miimon) != 0) { |
| netdev_warn(bond->dev, "down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", |
| value, bond->params.miimon, |
| (value / bond->params.miimon) * |
| bond->params.miimon); |
| } |
| bond->params.downdelay = value / bond->params.miimon; |
| netdev_info(bond->dev, "Setting down delay to %d\n", |
| bond->params.downdelay * bond->params.miimon); |
| |
| return 0; |
| } |
| |
| static int bond_option_use_carrier_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| netdev_info(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_info(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_info(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_info(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_arp_rcv; |
| 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_info(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) |
| { |
| int ret; |
| |
| /* not to race with bond_arp_rcv */ |
| write_lock_bh(&bond->lock); |
| ret = _bond_option_arp_ip_target_add(bond, target); |
| write_unlock_bh(&bond->lock); |
| |
| return ret; |
| } |
| |
| 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_info(bond->dev, "Removing ARP target %pI4\n", &target); |
| |
| /* not to race with bond_arp_rcv */ |
| write_lock_bh(&bond->lock); |
| |
| 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; |
| |
| write_unlock_bh(&bond->lock); |
| |
| return 0; |
| } |
| |
| void bond_option_arp_ip_targets_clear(struct bonding *bond) |
| { |
| int i; |
| |
| /* not to race with bond_arp_rcv */ |
| write_lock_bh(&bond->lock); |
| for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) |
| _bond_options_arp_ip_target_set(bond, i, 0, 0); |
| write_unlock_bh(&bond->lock); |
| } |
| |
| 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 (!in4_pton(newval->string+1, -1, (u8 *)&target, -1, NULL)) { |
| netdev_err(bond->dev, "invalid ARP target %pI4 specified\n", |
| &target); |
| 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; |
| } |
| |
| static int bond_option_arp_validate_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| netdev_info(bond->dev, "Setting arp_validate to %s (%llu)\n", |
| newval->string, newval->value); |
| |
| if (bond->dev->flags & IFF_UP) { |
| if (!newval->value) |
| bond->recv_probe = NULL; |
| else if (bond->params.arp_interval) |
| bond->recv_probe = bond_arp_rcv; |
| } |
| bond->params.arp_validate = newval->value; |
| |
| return 0; |
| } |
| |
| static int bond_option_arp_all_targets_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| netdev_info(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_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(); |
| read_lock(&bond->lock); |
| write_lock_bh(&bond->curr_slave_lock); |
| |
| p = strchr(primary, '\n'); |
| if (p) |
| *p = '\0'; |
| /* check to see if we are clearing primary */ |
| if (!strlen(primary)) { |
| netdev_info(bond->dev, "Setting primary slave to None\n"); |
| 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) { |
| netdev_info(bond->dev, "Setting %s as primary slave\n", |
| slave->dev->name); |
| bond->primary_slave = slave; |
| strcpy(bond->params.primary, slave->dev->name); |
| bond_select_active_slave(bond); |
| goto out; |
| } |
| } |
| |
| if (bond->primary_slave) { |
| netdev_info(bond->dev, "Setting primary slave to None\n"); |
| bond->primary_slave = NULL; |
| bond_select_active_slave(bond); |
| } |
| strncpy(bond->params.primary, primary, IFNAMSIZ); |
| bond->params.primary[IFNAMSIZ - 1] = 0; |
| |
| netdev_info(bond->dev, "Recording %s as primary, but it has not been enslaved to %s yet\n", |
| primary, bond->dev->name); |
| |
| out: |
| write_unlock_bh(&bond->curr_slave_lock); |
| read_unlock(&bond->lock); |
| unblock_netpoll_tx(); |
| |
| return 0; |
| } |
| |
| static int bond_option_primary_reselect_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| netdev_info(bond->dev, "Setting primary_reselect to %s (%llu)\n", |
| newval->string, newval->value); |
| bond->params.primary_reselect = newval->value; |
| |
| block_netpoll_tx(); |
| write_lock_bh(&bond->curr_slave_lock); |
| bond_select_active_slave(bond); |
| write_unlock_bh(&bond->curr_slave_lock); |
| unblock_netpoll_tx(); |
| |
| return 0; |
| } |
| |
| static int bond_option_fail_over_mac_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| netdev_info(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_info(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_info(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_info(bond->dev, "Setting min links value to %llu\n", |
| newval->value); |
| bond->params.min_links = newval->value; |
| |
| 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) |
| { |
| 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_rate_set(struct bonding *bond, |
| const struct bond_opt_value *newval) |
| { |
| netdev_info(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_info(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 */ |
| update_slave->queue_id = qid; |
| |
| out: |
| return ret; |
| |
| err_no_cmd: |
| netdev_info(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) || |
| !dev_valid_name(ifname)) |
| goto err_no_cmd; |
| |
| dev = __dev_get_by_name(dev_net(bond->dev), ifname); |
| if (!dev) { |
| netdev_info(bond->dev, "interface %s does not exist!\n", |
| ifname); |
| ret = -ENODEV; |
| goto out; |
| } |
| |
| switch (command[0]) { |
| case '+': |
| netdev_info(bond->dev, "Adding slave %s\n", dev->name); |
| ret = bond_enslave(bond->dev, dev); |
| break; |
| |
| case '-': |
| netdev_info(bond->dev, "Removing slave %s\n", dev->name); |
| ret = bond_release(bond->dev, dev); |
| break; |
| |
| default: |
| 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_info(bond->dev, "Setting dynamic-lb to %s (%llu)\n", |
| newval->string, newval->value); |
| bond->params.tlb_dynamic_lb = newval->value; |
| |
| return 0; |
| } |