--- /dev/null
+/*
+ * 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 <net/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_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_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 if (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(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();
+ /* 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 = 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 */
+ 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;
+ }
+ }
+ }
+ 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)
+{
+ 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_info(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 (!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();
+
+ 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");
+ 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) {
+ netdev_info(bond->dev, "Setting %s as primary slave\n",
+ slave->dev->name);
+ rcu_assign_pointer(bond->primary_slave, slave);
+ strcpy(bond->params.primary, slave->dev->name);
+ bond_select_active_slave(bond);
+ goto out;
+ }
+ }
+
+ if (rtnl_dereference(bond->primary_slave)) {
+ netdev_info(bond->dev, "Setting primary slave to None\n");
+ RCU_INIT_POINTER(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:
+ 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();
+ 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_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;
+ 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)
+{
+ 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;
+}
Code Review / kvmfornfv.git / blobdiff