mirror of https://gitee.com/openkylin/linux.git
574 lines
16 KiB
C
574 lines
16 KiB
C
/*
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* drivers/net/bond/bond_netlink.c - Netlink interface for bonding
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* Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
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* Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/if_link.h>
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#include <linux/if_ether.h>
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#include <net/netlink.h>
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#include <net/rtnetlink.h>
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#include "bonding.h"
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static size_t bond_get_slave_size(const struct net_device *bond_dev,
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const struct net_device *slave_dev)
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{
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return nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
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nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */
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nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */
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nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
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0;
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}
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static int bond_fill_slave_info(struct sk_buff *skb,
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const struct net_device *bond_dev,
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const struct net_device *slave_dev)
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{
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struct slave *slave = bond_slave_get_rtnl(slave_dev);
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if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))
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goto nla_put_failure;
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if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,
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slave->link_failure_count))
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goto nla_put_failure;
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if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,
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slave_dev->addr_len, slave->perm_hwaddr))
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goto nla_put_failure;
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if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id))
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goto nla_put_failure;
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if (slave->bond->params.mode == BOND_MODE_8023AD) {
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const struct aggregator *agg;
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agg = SLAVE_AD_INFO(slave).port.aggregator;
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if (agg)
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if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
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agg->aggregator_identifier))
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goto nla_put_failure;
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}
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return 0;
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nla_put_failure:
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return -EMSGSIZE;
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}
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static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
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[IFLA_BOND_MODE] = { .type = NLA_U8 },
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[IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
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[IFLA_BOND_MIIMON] = { .type = NLA_U32 },
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[IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
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[IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
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[IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
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[IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
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[IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
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[IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
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[IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
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[IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
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[IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
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[IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
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[IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
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[IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
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[IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
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[IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
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[IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
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[IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
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[IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
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[IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
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[IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
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[IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
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};
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static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
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{
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if (tb[IFLA_ADDRESS]) {
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if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
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return -EINVAL;
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if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
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return -EADDRNOTAVAIL;
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}
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return 0;
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}
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static int bond_changelink(struct net_device *bond_dev,
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struct nlattr *tb[], struct nlattr *data[])
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{
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struct bonding *bond = netdev_priv(bond_dev);
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struct bond_opt_value newval;
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int miimon = 0;
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int err;
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if (!data)
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return 0;
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if (data[IFLA_BOND_MODE]) {
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int mode = nla_get_u8(data[IFLA_BOND_MODE]);
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bond_opt_initval(&newval, mode);
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err = __bond_opt_set(bond, BOND_OPT_MODE, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_ACTIVE_SLAVE]) {
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int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
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struct net_device *slave_dev;
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char *active_slave = "";
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if (ifindex != 0) {
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slave_dev = __dev_get_by_index(dev_net(bond_dev),
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ifindex);
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if (!slave_dev)
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return -ENODEV;
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active_slave = slave_dev->name;
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}
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bond_opt_initstr(&newval, active_slave);
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err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_MIIMON]) {
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miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
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bond_opt_initval(&newval, miimon);
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err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_UPDELAY]) {
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int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
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bond_opt_initval(&newval, updelay);
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err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_DOWNDELAY]) {
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int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
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bond_opt_initval(&newval, downdelay);
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err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_USE_CARRIER]) {
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int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
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bond_opt_initval(&newval, use_carrier);
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err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_ARP_INTERVAL]) {
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int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
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if (arp_interval && miimon) {
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pr_err("%s: ARP monitoring cannot be used with MII monitoring\n",
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bond->dev->name);
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return -EINVAL;
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}
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bond_opt_initval(&newval, arp_interval);
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err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_ARP_IP_TARGET]) {
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struct nlattr *attr;
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int i = 0, rem;
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bond_option_arp_ip_targets_clear(bond);
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nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
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__be32 target = nla_get_be32(attr);
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bond_opt_initval(&newval, (__force u64)target);
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err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
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&newval);
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if (err)
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break;
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i++;
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}
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if (i == 0 && bond->params.arp_interval)
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pr_warn("%s: Removing last arp target with arp_interval on\n",
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bond->dev->name);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_ARP_VALIDATE]) {
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int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
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if (arp_validate && miimon) {
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pr_err("%s: ARP validating cannot be used with MII monitoring\n",
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bond->dev->name);
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return -EINVAL;
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}
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bond_opt_initval(&newval, arp_validate);
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err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
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int arp_all_targets =
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nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
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bond_opt_initval(&newval, arp_all_targets);
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err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_PRIMARY]) {
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int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
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struct net_device *dev;
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char *primary = "";
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dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
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if (dev)
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primary = dev->name;
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bond_opt_initstr(&newval, primary);
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err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_PRIMARY_RESELECT]) {
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int primary_reselect =
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nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
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bond_opt_initval(&newval, primary_reselect);
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err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_FAIL_OVER_MAC]) {
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int fail_over_mac =
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nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
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bond_opt_initval(&newval, fail_over_mac);
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err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
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int xmit_hash_policy =
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nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
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bond_opt_initval(&newval, xmit_hash_policy);
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err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_RESEND_IGMP]) {
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int resend_igmp =
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nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
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bond_opt_initval(&newval, resend_igmp);
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err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
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int num_peer_notif =
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nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
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bond_opt_initval(&newval, num_peer_notif);
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err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
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int all_slaves_active =
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nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
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bond_opt_initval(&newval, all_slaves_active);
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err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_MIN_LINKS]) {
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int min_links =
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nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
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bond_opt_initval(&newval, min_links);
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err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_LP_INTERVAL]) {
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int lp_interval =
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nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
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bond_opt_initval(&newval, lp_interval);
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err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
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int packets_per_slave =
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nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
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bond_opt_initval(&newval, packets_per_slave);
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err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_AD_LACP_RATE]) {
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int lacp_rate =
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nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
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bond_opt_initval(&newval, lacp_rate);
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err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval);
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if (err)
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return err;
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}
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if (data[IFLA_BOND_AD_SELECT]) {
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int ad_select =
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nla_get_u8(data[IFLA_BOND_AD_SELECT]);
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bond_opt_initval(&newval, ad_select);
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err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval);
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if (err)
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return err;
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}
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return 0;
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}
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static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
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struct nlattr *tb[], struct nlattr *data[])
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{
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int err;
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err = bond_changelink(bond_dev, tb, data);
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if (err < 0)
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return err;
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return register_netdevice(bond_dev);
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}
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static size_t bond_get_size(const struct net_device *bond_dev)
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{
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return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */
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/* IFLA_BOND_ARP_IP_TARGET */
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nla_total_size(sizeof(struct nlattr)) +
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nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */
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nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */
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nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */
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nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
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nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
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nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
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nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
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nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
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nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
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0;
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}
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static int bond_fill_info(struct sk_buff *skb,
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const struct net_device *bond_dev)
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{
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struct bonding *bond = netdev_priv(bond_dev);
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struct net_device *slave_dev = bond_option_active_slave_get(bond);
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struct nlattr *targets;
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unsigned int packets_per_slave;
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int i, targets_added;
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if (nla_put_u8(skb, IFLA_BOND_MODE, bond->params.mode))
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goto nla_put_failure;
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if (slave_dev &&
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nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, slave_dev->ifindex))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
|
|
bond->params.updelay * bond->params.miimon))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
|
|
bond->params.downdelay * bond->params.miimon))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
|
|
goto nla_put_failure;
|
|
|
|
targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
|
|
if (!targets)
|
|
goto nla_put_failure;
|
|
|
|
targets_added = 0;
|
|
for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
|
|
if (bond->params.arp_targets[i]) {
|
|
nla_put_be32(skb, i, bond->params.arp_targets[i]);
|
|
targets_added = 1;
|
|
}
|
|
}
|
|
|
|
if (targets_added)
|
|
nla_nest_end(skb, targets);
|
|
else
|
|
nla_nest_cancel(skb, targets);
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
|
|
bond->params.arp_all_targets))
|
|
goto nla_put_failure;
|
|
|
|
if (bond->primary_slave &&
|
|
nla_put_u32(skb, IFLA_BOND_PRIMARY,
|
|
bond->primary_slave->dev->ifindex))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
|
|
bond->params.primary_reselect))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
|
|
bond->params.fail_over_mac))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
|
|
bond->params.xmit_policy))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
|
|
bond->params.resend_igmp))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
|
|
bond->params.num_peer_notif))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
|
|
bond->params.all_slaves_active))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
|
|
bond->params.min_links))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
|
|
bond->params.lp_interval))
|
|
goto nla_put_failure;
|
|
|
|
packets_per_slave = bond->params.packets_per_slave;
|
|
if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
|
|
packets_per_slave))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(skb, IFLA_BOND_AD_LACP_RATE,
|
|
bond->params.lacp_fast))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(skb, IFLA_BOND_AD_SELECT,
|
|
bond->params.ad_select))
|
|
goto nla_put_failure;
|
|
|
|
if (bond->params.mode == BOND_MODE_8023AD) {
|
|
struct ad_info info;
|
|
|
|
if (!bond_3ad_get_active_agg_info(bond, &info)) {
|
|
struct nlattr *nest;
|
|
|
|
nest = nla_nest_start(skb, IFLA_BOND_AD_INFO);
|
|
if (!nest)
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u16(skb, IFLA_BOND_AD_INFO_AGGREGATOR,
|
|
info.aggregator_id))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(skb, IFLA_BOND_AD_INFO_NUM_PORTS,
|
|
info.ports))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(skb, IFLA_BOND_AD_INFO_ACTOR_KEY,
|
|
info.actor_key))
|
|
goto nla_put_failure;
|
|
if (nla_put_u16(skb, IFLA_BOND_AD_INFO_PARTNER_KEY,
|
|
info.partner_key))
|
|
goto nla_put_failure;
|
|
if (nla_put(skb, IFLA_BOND_AD_INFO_PARTNER_MAC,
|
|
sizeof(info.partner_system),
|
|
&info.partner_system))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(skb, nest);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
struct rtnl_link_ops bond_link_ops __read_mostly = {
|
|
.kind = "bond",
|
|
.priv_size = sizeof(struct bonding),
|
|
.setup = bond_setup,
|
|
.maxtype = IFLA_BOND_MAX,
|
|
.policy = bond_policy,
|
|
.validate = bond_validate,
|
|
.newlink = bond_newlink,
|
|
.changelink = bond_changelink,
|
|
.get_size = bond_get_size,
|
|
.fill_info = bond_fill_info,
|
|
.get_num_tx_queues = bond_get_num_tx_queues,
|
|
.get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number
|
|
as for TX queues */
|
|
.get_slave_size = bond_get_slave_size,
|
|
.fill_slave_info = bond_fill_slave_info,
|
|
};
|
|
|
|
int __init bond_netlink_init(void)
|
|
{
|
|
return rtnl_link_register(&bond_link_ops);
|
|
}
|
|
|
|
void bond_netlink_fini(void)
|
|
{
|
|
rtnl_link_unregister(&bond_link_ops);
|
|
}
|
|
|
|
MODULE_ALIAS_RTNL_LINK("bond");
|