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OpenCloudOS-Kernel/drivers/net/bonding/bond_netlink.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* drivers/net/bond/bond_netlink.c - Netlink interface for bonding
* Copyright (c) 2013 Jiri Pirko <jiri@resnulli.us>
* Copyright (c) 2013 Scott Feldman <sfeldma@cumulusnetworks.com>
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_link.h>
#include <linux/if_ether.h>
#include <net/netlink.h>
#include <net/rtnetlink.h>
#include <net/bonding.h>
#include <net/ipv6.h>
static size_t bond_get_slave_size(const struct net_device *bond_dev,
const struct net_device *slave_dev)
{
return nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_STATE */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_MII_STATUS */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_SLAVE_LINK_FAILURE_COUNT */
nla_total_size(MAX_ADDR_LEN) + /* IFLA_BOND_SLAVE_PERM_HWADDR */
nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_QUEUE_ID */
nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_AGGREGATOR_ID */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE */
nla_total_size(sizeof(u16)) + /* IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE */
nla_total_size(sizeof(s32)) + /* IFLA_BOND_SLAVE_PRIO */
0;
}
static int bond_fill_slave_info(struct sk_buff *skb,
const struct net_device *bond_dev,
const struct net_device *slave_dev)
{
struct slave *slave = bond_slave_get_rtnl(slave_dev);
if (nla_put_u8(skb, IFLA_BOND_SLAVE_STATE, bond_slave_state(slave)))
goto nla_put_failure;
if (nla_put_u8(skb, IFLA_BOND_SLAVE_MII_STATUS, slave->link))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BOND_SLAVE_LINK_FAILURE_COUNT,
slave->link_failure_count))
goto nla_put_failure;
if (nla_put(skb, IFLA_BOND_SLAVE_PERM_HWADDR,
slave_dev->addr_len, slave->perm_hwaddr))
goto nla_put_failure;
if (nla_put_u16(skb, IFLA_BOND_SLAVE_QUEUE_ID, slave->queue_id))
goto nla_put_failure;
if (nla_put_s32(skb, IFLA_BOND_SLAVE_PRIO, slave->prio))
goto nla_put_failure;
if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
const struct aggregator *agg;
const struct port *ad_port;
ad_port = &SLAVE_AD_INFO(slave)->port;
agg = SLAVE_AD_INFO(slave)->port.aggregator;
if (agg) {
if (nla_put_u16(skb, IFLA_BOND_SLAVE_AD_AGGREGATOR_ID,
agg->aggregator_identifier))
goto nla_put_failure;
if (nla_put_u8(skb,
IFLA_BOND_SLAVE_AD_ACTOR_OPER_PORT_STATE,
ad_port->actor_oper_port_state))
goto nla_put_failure;
if (nla_put_u16(skb,
IFLA_BOND_SLAVE_AD_PARTNER_OPER_PORT_STATE,
ad_port->partner_oper.port_state))
goto nla_put_failure;
}
}
return 0;
nla_put_failure:
return -EMSGSIZE;
}
static const struct nla_policy bond_policy[IFLA_BOND_MAX + 1] = {
[IFLA_BOND_MODE] = { .type = NLA_U8 },
[IFLA_BOND_ACTIVE_SLAVE] = { .type = NLA_U32 },
[IFLA_BOND_MIIMON] = { .type = NLA_U32 },
[IFLA_BOND_UPDELAY] = { .type = NLA_U32 },
[IFLA_BOND_DOWNDELAY] = { .type = NLA_U32 },
[IFLA_BOND_USE_CARRIER] = { .type = NLA_U8 },
[IFLA_BOND_ARP_INTERVAL] = { .type = NLA_U32 },
[IFLA_BOND_ARP_IP_TARGET] = { .type = NLA_NESTED },
[IFLA_BOND_ARP_VALIDATE] = { .type = NLA_U32 },
[IFLA_BOND_ARP_ALL_TARGETS] = { .type = NLA_U32 },
[IFLA_BOND_PRIMARY] = { .type = NLA_U32 },
[IFLA_BOND_PRIMARY_RESELECT] = { .type = NLA_U8 },
[IFLA_BOND_FAIL_OVER_MAC] = { .type = NLA_U8 },
[IFLA_BOND_XMIT_HASH_POLICY] = { .type = NLA_U8 },
[IFLA_BOND_RESEND_IGMP] = { .type = NLA_U32 },
[IFLA_BOND_NUM_PEER_NOTIF] = { .type = NLA_U8 },
[IFLA_BOND_ALL_SLAVES_ACTIVE] = { .type = NLA_U8 },
[IFLA_BOND_MIN_LINKS] = { .type = NLA_U32 },
[IFLA_BOND_LP_INTERVAL] = { .type = NLA_U32 },
[IFLA_BOND_PACKETS_PER_SLAVE] = { .type = NLA_U32 },
[IFLA_BOND_AD_LACP_ACTIVE] = { .type = NLA_U8 },
[IFLA_BOND_AD_LACP_RATE] = { .type = NLA_U8 },
[IFLA_BOND_AD_SELECT] = { .type = NLA_U8 },
[IFLA_BOND_AD_INFO] = { .type = NLA_NESTED },
[IFLA_BOND_AD_ACTOR_SYS_PRIO] = { .type = NLA_U16 },
[IFLA_BOND_AD_USER_PORT_KEY] = { .type = NLA_U16 },
[IFLA_BOND_AD_ACTOR_SYSTEM] = { .type = NLA_BINARY,
.len = ETH_ALEN },
[IFLA_BOND_TLB_DYNAMIC_LB] = { .type = NLA_U8 },
[IFLA_BOND_PEER_NOTIF_DELAY] = { .type = NLA_U32 },
[IFLA_BOND_MISSED_MAX] = { .type = NLA_U8 },
[IFLA_BOND_NS_IP6_TARGET] = { .type = NLA_NESTED },
};
static const struct nla_policy bond_slave_policy[IFLA_BOND_SLAVE_MAX + 1] = {
[IFLA_BOND_SLAVE_QUEUE_ID] = { .type = NLA_U16 },
[IFLA_BOND_SLAVE_PRIO] = { .type = NLA_S32 },
};
static int bond_validate(struct nlattr *tb[], struct nlattr *data[],
struct netlink_ext_ack *extack)
{
if (tb[IFLA_ADDRESS]) {
if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
return -EINVAL;
if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
return -EADDRNOTAVAIL;
}
return 0;
}
static int bond_slave_changelink(struct net_device *bond_dev,
struct net_device *slave_dev,
struct nlattr *tb[], struct nlattr *data[],
struct netlink_ext_ack *extack)
{
struct bonding *bond = netdev_priv(bond_dev);
struct bond_opt_value newval;
int err;
if (!data)
return 0;
if (data[IFLA_BOND_SLAVE_QUEUE_ID]) {
u16 queue_id = nla_get_u16(data[IFLA_BOND_SLAVE_QUEUE_ID]);
char queue_id_str[IFNAMSIZ + 7];
/* queue_id option setting expects slave_name:queue_id */
snprintf(queue_id_str, sizeof(queue_id_str), "%s:%u\n",
slave_dev->name, queue_id);
bond_opt_initstr(&newval, queue_id_str);
err = __bond_opt_set(bond, BOND_OPT_QUEUE_ID, &newval,
data[IFLA_BOND_SLAVE_QUEUE_ID], extack);
if (err)
return err;
}
if (data[IFLA_BOND_SLAVE_PRIO]) {
int prio = nla_get_s32(data[IFLA_BOND_SLAVE_PRIO]);
bond_opt_slave_initval(&newval, &slave_dev, prio);
err = __bond_opt_set(bond, BOND_OPT_PRIO, &newval,
data[IFLA_BOND_SLAVE_PRIO], extack);
if (err)
return err;
}
return 0;
}
static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[],
struct nlattr *data[],
struct netlink_ext_ack *extack)
{
struct bonding *bond = netdev_priv(bond_dev);
struct bond_opt_value newval;
int miimon = 0;
int err;
if (!data)
return 0;
if (data[IFLA_BOND_MODE]) {
int mode = nla_get_u8(data[IFLA_BOND_MODE]);
bond_opt_initval(&newval, mode);
err = __bond_opt_set(bond, BOND_OPT_MODE, &newval,
data[IFLA_BOND_MODE], extack);
if (err)
return err;
}
if (data[IFLA_BOND_ACTIVE_SLAVE]) {
int ifindex = nla_get_u32(data[IFLA_BOND_ACTIVE_SLAVE]);
struct net_device *slave_dev;
char *active_slave = "";
if (ifindex != 0) {
slave_dev = __dev_get_by_index(dev_net(bond_dev),
ifindex);
if (!slave_dev)
return -ENODEV;
active_slave = slave_dev->name;
}
bond_opt_initstr(&newval, active_slave);
err = __bond_opt_set(bond, BOND_OPT_ACTIVE_SLAVE, &newval,
data[IFLA_BOND_ACTIVE_SLAVE], extack);
if (err)
return err;
}
if (data[IFLA_BOND_MIIMON]) {
miimon = nla_get_u32(data[IFLA_BOND_MIIMON]);
bond_opt_initval(&newval, miimon);
err = __bond_opt_set(bond, BOND_OPT_MIIMON, &newval,
data[IFLA_BOND_MIIMON], extack);
if (err)
return err;
}
if (data[IFLA_BOND_UPDELAY]) {
int updelay = nla_get_u32(data[IFLA_BOND_UPDELAY]);
bond_opt_initval(&newval, updelay);
err = __bond_opt_set(bond, BOND_OPT_UPDELAY, &newval,
data[IFLA_BOND_UPDELAY], extack);
if (err)
return err;
}
if (data[IFLA_BOND_DOWNDELAY]) {
int downdelay = nla_get_u32(data[IFLA_BOND_DOWNDELAY]);
bond_opt_initval(&newval, downdelay);
err = __bond_opt_set(bond, BOND_OPT_DOWNDELAY, &newval,
data[IFLA_BOND_DOWNDELAY], extack);
if (err)
return err;
}
if (data[IFLA_BOND_PEER_NOTIF_DELAY]) {
int delay = nla_get_u32(data[IFLA_BOND_PEER_NOTIF_DELAY]);
bond_opt_initval(&newval, delay);
err = __bond_opt_set(bond, BOND_OPT_PEER_NOTIF_DELAY, &newval,
data[IFLA_BOND_PEER_NOTIF_DELAY], extack);
if (err)
return err;
}
if (data[IFLA_BOND_USE_CARRIER]) {
int use_carrier = nla_get_u8(data[IFLA_BOND_USE_CARRIER]);
bond_opt_initval(&newval, use_carrier);
err = __bond_opt_set(bond, BOND_OPT_USE_CARRIER, &newval,
data[IFLA_BOND_USE_CARRIER], extack);
if (err)
return err;
}
if (data[IFLA_BOND_ARP_INTERVAL]) {
int arp_interval = nla_get_u32(data[IFLA_BOND_ARP_INTERVAL]);
if (arp_interval && miimon) {
NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL],
"ARP monitoring cannot be used with MII monitoring");
return -EINVAL;
}
bond_opt_initval(&newval, arp_interval);
err = __bond_opt_set(bond, BOND_OPT_ARP_INTERVAL, &newval,
data[IFLA_BOND_ARP_INTERVAL], extack);
if (err)
return err;
}
if (data[IFLA_BOND_ARP_IP_TARGET]) {
struct nlattr *attr;
int i = 0, rem;
bond_option_arp_ip_targets_clear(bond);
nla_for_each_nested(attr, data[IFLA_BOND_ARP_IP_TARGET], rem) {
__be32 target;
if (nla_len(attr) < sizeof(target))
return -EINVAL;
target = nla_get_be32(attr);
bond_opt_initval(&newval, (__force u64)target);
err = __bond_opt_set(bond, BOND_OPT_ARP_TARGETS,
&newval,
data[IFLA_BOND_ARP_IP_TARGET],
extack);
if (err)
break;
i++;
}
if (i == 0 && bond->params.arp_interval)
netdev_warn(bond->dev, "Removing last arp target with arp_interval on\n");
if (err)
return err;
}
#if IS_ENABLED(CONFIG_IPV6)
if (data[IFLA_BOND_NS_IP6_TARGET]) {
struct nlattr *attr;
int i = 0, rem;
bond_option_ns_ip6_targets_clear(bond);
nla_for_each_nested(attr, data[IFLA_BOND_NS_IP6_TARGET], rem) {
struct in6_addr addr6;
if (nla_len(attr) < sizeof(addr6)) {
NL_SET_ERR_MSG(extack, "Invalid IPv6 address");
return -EINVAL;
}
addr6 = nla_get_in6_addr(attr);
bond_opt_initextra(&newval, &addr6, sizeof(addr6));
err = __bond_opt_set(bond, BOND_OPT_NS_TARGETS,
&newval,
data[IFLA_BOND_NS_IP6_TARGET],
extack);
if (err)
break;
i++;
}
if (i == 0 && bond->params.arp_interval)
netdev_warn(bond->dev, "Removing last ns target with arp_interval on\n");
if (err)
return err;
}
#endif
if (data[IFLA_BOND_ARP_VALIDATE]) {
int arp_validate = nla_get_u32(data[IFLA_BOND_ARP_VALIDATE]);
if (arp_validate && miimon) {
NL_SET_ERR_MSG_ATTR(extack, data[IFLA_BOND_ARP_INTERVAL],
"ARP validating cannot be used with MII monitoring");
return -EINVAL;
}
bond_opt_initval(&newval, arp_validate);
err = __bond_opt_set(bond, BOND_OPT_ARP_VALIDATE, &newval,
data[IFLA_BOND_ARP_VALIDATE], extack);
if (err)
return err;
}
if (data[IFLA_BOND_ARP_ALL_TARGETS]) {
int arp_all_targets =
nla_get_u32(data[IFLA_BOND_ARP_ALL_TARGETS]);
bond_opt_initval(&newval, arp_all_targets);
err = __bond_opt_set(bond, BOND_OPT_ARP_ALL_TARGETS, &newval,
data[IFLA_BOND_ARP_ALL_TARGETS], extack);
if (err)
return err;
}
if (data[IFLA_BOND_PRIMARY]) {
int ifindex = nla_get_u32(data[IFLA_BOND_PRIMARY]);
struct net_device *dev;
char *primary = "";
dev = __dev_get_by_index(dev_net(bond_dev), ifindex);
if (dev)
primary = dev->name;
bond_opt_initstr(&newval, primary);
err = __bond_opt_set(bond, BOND_OPT_PRIMARY, &newval,
data[IFLA_BOND_PRIMARY], extack);
if (err)
return err;
}
if (data[IFLA_BOND_PRIMARY_RESELECT]) {
int primary_reselect =
nla_get_u8(data[IFLA_BOND_PRIMARY_RESELECT]);
bond_opt_initval(&newval, primary_reselect);
err = __bond_opt_set(bond, BOND_OPT_PRIMARY_RESELECT, &newval,
data[IFLA_BOND_PRIMARY_RESELECT], extack);
if (err)
return err;
}
if (data[IFLA_BOND_FAIL_OVER_MAC]) {
int fail_over_mac =
nla_get_u8(data[IFLA_BOND_FAIL_OVER_MAC]);
bond_opt_initval(&newval, fail_over_mac);
err = __bond_opt_set(bond, BOND_OPT_FAIL_OVER_MAC, &newval,
data[IFLA_BOND_FAIL_OVER_MAC], extack);
if (err)
return err;
}
if (data[IFLA_BOND_XMIT_HASH_POLICY]) {
int xmit_hash_policy =
nla_get_u8(data[IFLA_BOND_XMIT_HASH_POLICY]);
bond_opt_initval(&newval, xmit_hash_policy);
err = __bond_opt_set(bond, BOND_OPT_XMIT_HASH, &newval,
data[IFLA_BOND_XMIT_HASH_POLICY], extack);
if (err)
return err;
}
if (data[IFLA_BOND_RESEND_IGMP]) {
int resend_igmp =
nla_get_u32(data[IFLA_BOND_RESEND_IGMP]);
bond_opt_initval(&newval, resend_igmp);
err = __bond_opt_set(bond, BOND_OPT_RESEND_IGMP, &newval,
data[IFLA_BOND_RESEND_IGMP], extack);
if (err)
return err;
}
if (data[IFLA_BOND_NUM_PEER_NOTIF]) {
int num_peer_notif =
nla_get_u8(data[IFLA_BOND_NUM_PEER_NOTIF]);
bond_opt_initval(&newval, num_peer_notif);
err = __bond_opt_set(bond, BOND_OPT_NUM_PEER_NOTIF, &newval,
data[IFLA_BOND_NUM_PEER_NOTIF], extack);
if (err)
return err;
}
if (data[IFLA_BOND_ALL_SLAVES_ACTIVE]) {
int all_slaves_active =
nla_get_u8(data[IFLA_BOND_ALL_SLAVES_ACTIVE]);
bond_opt_initval(&newval, all_slaves_active);
err = __bond_opt_set(bond, BOND_OPT_ALL_SLAVES_ACTIVE, &newval,
data[IFLA_BOND_ALL_SLAVES_ACTIVE], extack);
if (err)
return err;
}
if (data[IFLA_BOND_MIN_LINKS]) {
int min_links =
nla_get_u32(data[IFLA_BOND_MIN_LINKS]);
bond_opt_initval(&newval, min_links);
err = __bond_opt_set(bond, BOND_OPT_MINLINKS, &newval,
data[IFLA_BOND_MIN_LINKS], extack);
if (err)
return err;
}
if (data[IFLA_BOND_LP_INTERVAL]) {
int lp_interval =
nla_get_u32(data[IFLA_BOND_LP_INTERVAL]);
bond_opt_initval(&newval, lp_interval);
err = __bond_opt_set(bond, BOND_OPT_LP_INTERVAL, &newval,
data[IFLA_BOND_LP_INTERVAL], extack);
if (err)
return err;
}
if (data[IFLA_BOND_PACKETS_PER_SLAVE]) {
int packets_per_slave =
nla_get_u32(data[IFLA_BOND_PACKETS_PER_SLAVE]);
bond_opt_initval(&newval, packets_per_slave);
err = __bond_opt_set(bond, BOND_OPT_PACKETS_PER_SLAVE, &newval,
data[IFLA_BOND_PACKETS_PER_SLAVE], extack);
if (err)
return err;
}
if (data[IFLA_BOND_AD_LACP_ACTIVE]) {
int lacp_active = nla_get_u8(data[IFLA_BOND_AD_LACP_ACTIVE]);
bond_opt_initval(&newval, lacp_active);
err = __bond_opt_set(bond, BOND_OPT_LACP_ACTIVE, &newval,
data[IFLA_BOND_AD_LACP_ACTIVE], extack);
if (err)
return err;
}
if (data[IFLA_BOND_AD_LACP_RATE]) {
int lacp_rate =
nla_get_u8(data[IFLA_BOND_AD_LACP_RATE]);
bond_opt_initval(&newval, lacp_rate);
err = __bond_opt_set(bond, BOND_OPT_LACP_RATE, &newval,
data[IFLA_BOND_AD_LACP_RATE], extack);
if (err)
return err;
}
if (data[IFLA_BOND_AD_SELECT]) {
int ad_select =
nla_get_u8(data[IFLA_BOND_AD_SELECT]);
bond_opt_initval(&newval, ad_select);
err = __bond_opt_set(bond, BOND_OPT_AD_SELECT, &newval,
data[IFLA_BOND_AD_SELECT], extack);
if (err)
return err;
}
if (data[IFLA_BOND_AD_ACTOR_SYS_PRIO]) {
int actor_sys_prio =
nla_get_u16(data[IFLA_BOND_AD_ACTOR_SYS_PRIO]);
bond_opt_initval(&newval, actor_sys_prio);
err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYS_PRIO, &newval,
data[IFLA_BOND_AD_ACTOR_SYS_PRIO], extack);
if (err)
return err;
}
if (data[IFLA_BOND_AD_USER_PORT_KEY]) {
int port_key =
nla_get_u16(data[IFLA_BOND_AD_USER_PORT_KEY]);
bond_opt_initval(&newval, port_key);
err = __bond_opt_set(bond, BOND_OPT_AD_USER_PORT_KEY, &newval,
data[IFLA_BOND_AD_USER_PORT_KEY], extack);
if (err)
return err;
}
if (data[IFLA_BOND_AD_ACTOR_SYSTEM]) {
if (nla_len(data[IFLA_BOND_AD_ACTOR_SYSTEM]) != ETH_ALEN)
return -EINVAL;
bond_opt_initval(&newval,
nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));
err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval,
data[IFLA_BOND_AD_ACTOR_SYSTEM], extack);
if (err)
return err;
}
if (data[IFLA_BOND_TLB_DYNAMIC_LB]) {
int dynamic_lb = nla_get_u8(data[IFLA_BOND_TLB_DYNAMIC_LB]);
bond_opt_initval(&newval, dynamic_lb);
err = __bond_opt_set(bond, BOND_OPT_TLB_DYNAMIC_LB, &newval,
data[IFLA_BOND_TLB_DYNAMIC_LB], extack);
if (err)
return err;
}
if (data[IFLA_BOND_MISSED_MAX]) {
int missed_max = nla_get_u8(data[IFLA_BOND_MISSED_MAX]);
bond_opt_initval(&newval, missed_max);
err = __bond_opt_set(bond, BOND_OPT_MISSED_MAX, &newval,
data[IFLA_BOND_MISSED_MAX], extack);
if (err)
return err;
}
return 0;
}
static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
struct nlattr *tb[], struct nlattr *data[],
struct netlink_ext_ack *extack)
{
int err;
err = bond_changelink(bond_dev, tb, data, extack);
if (err < 0)
return err;
err = register_netdevice(bond_dev);
if (!err) {
struct bonding *bond = netdev_priv(bond_dev);
netif_carrier_off(bond_dev);
bond_work_init_all(bond);
}
return err;
}
static size_t bond_get_size(const struct net_device *bond_dev)
{
return nla_total_size(sizeof(u8)) + /* IFLA_BOND_MODE */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_ACTIVE_SLAVE */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIIMON */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_UPDELAY */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_DOWNDELAY */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_USE_CARRIER */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_INTERVAL */
/* IFLA_BOND_ARP_IP_TARGET */
nla_total_size(sizeof(struct nlattr)) +
nla_total_size(sizeof(u32)) * BOND_MAX_ARP_TARGETS +
nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_VALIDATE */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_ARP_ALL_TARGETS */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_PRIMARY */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_PRIMARY_RESELECT */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_FAIL_OVER_MAC */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_XMIT_HASH_POLICY */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_RESEND_IGMP */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_NUM_PEER_NOTIF */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_ALL_SLAVES_ACTIVE */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_MIN_LINKS */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_LP_INTERVAL */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_PACKETS_PER_SLAVE */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_ACTIVE */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_LACP_RATE */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_AD_SELECT */
nla_total_size(sizeof(struct nlattr)) + /* IFLA_BOND_AD_INFO */
nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_AGGREGATOR */
nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_NUM_PORTS */
nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_ACTOR_KEY */
nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_INFO_PARTNER_KEY*/
nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_INFO_PARTNER_MAC*/
nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_ACTOR_SYS_PRIO */
nla_total_size(sizeof(u16)) + /* IFLA_BOND_AD_USER_PORT_KEY */
nla_total_size(ETH_ALEN) + /* IFLA_BOND_AD_ACTOR_SYSTEM */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_TLB_DYNAMIC_LB */
nla_total_size(sizeof(u32)) + /* IFLA_BOND_PEER_NOTIF_DELAY */
nla_total_size(sizeof(u8)) + /* IFLA_BOND_MISSED_MAX */
/* IFLA_BOND_NS_IP6_TARGET */
nla_total_size(sizeof(struct nlattr)) +
nla_total_size(sizeof(struct in6_addr)) * BOND_MAX_NS_TARGETS +
0;
}
static int bond_option_active_slave_get_ifindex(struct bonding *bond)
{
const struct net_device *slave;
int ifindex;
rcu_read_lock();
slave = bond_option_active_slave_get_rcu(bond);
ifindex = slave ? slave->ifindex : 0;
rcu_read_unlock();
return ifindex;
}
static int bond_fill_info(struct sk_buff *skb,
const struct net_device *bond_dev)
{
struct bonding *bond = netdev_priv(bond_dev);
unsigned int packets_per_slave;
int ifindex, i, targets_added;
struct nlattr *targets;
struct slave *primary;
if (nla_put_u8(skb, IFLA_BOND_MODE, BOND_MODE(bond)))
goto nla_put_failure;
ifindex = bond_option_active_slave_get_ifindex(bond);
if (ifindex && nla_put_u32(skb, IFLA_BOND_ACTIVE_SLAVE, 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_u32(skb, IFLA_BOND_PEER_NOTIF_DELAY,
bond->params.peer_notif_delay * 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_noflag(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]) {
if (nla_put_be32(skb, i, bond->params.arp_targets[i]))
goto nla_put_failure;
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 IS_ENABLED(CONFIG_IPV6)
targets = nla_nest_start(skb, IFLA_BOND_NS_IP6_TARGET);
if (!targets)
goto nla_put_failure;
targets_added = 0;
for (i = 0; i < BOND_MAX_NS_TARGETS; i++) {
if (!ipv6_addr_any(&bond->params.ns_targets[i])) {
if (nla_put_in6_addr(skb, i, &bond->params.ns_targets[i]))
goto nla_put_failure;
targets_added = 1;
}
}
if (targets_added)
nla_nest_end(skb, targets);
else
nla_nest_cancel(skb, targets);
#endif
primary = rtnl_dereference(bond->primary_slave);
if (primary &&
nla_put_u32(skb, IFLA_BOND_PRIMARY, primary->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_ACTIVE,
bond->params.lacp_active))
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 (nla_put_u8(skb, IFLA_BOND_TLB_DYNAMIC_LB,
bond->params.tlb_dynamic_lb))
goto nla_put_failure;
if (nla_put_u8(skb, IFLA_BOND_MISSED_MAX,
bond->params.missed_max))
goto nla_put_failure;
if (BOND_MODE(bond) == BOND_MODE_8023AD) {
struct ad_info info;
if (capable(CAP_NET_ADMIN)) {
if (nla_put_u16(skb, IFLA_BOND_AD_ACTOR_SYS_PRIO,
bond->params.ad_actor_sys_prio))
goto nla_put_failure;
if (nla_put_u16(skb, IFLA_BOND_AD_USER_PORT_KEY,
bond->params.ad_user_port_key))
goto nla_put_failure;
if (nla_put(skb, IFLA_BOND_AD_ACTOR_SYSTEM,
ETH_ALEN, &bond->params.ad_actor_system))
goto nla_put_failure;
}
if (!bond_3ad_get_active_agg_info(bond, &info)) {
struct nlattr *nest;
nest = nla_nest_start_noflag(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;
}
static size_t bond_get_linkxstats_size(const struct net_device *dev, int attr)
{
switch (attr) {
case IFLA_STATS_LINK_XSTATS:
case IFLA_STATS_LINK_XSTATS_SLAVE:
break;
default:
return 0;
}
return bond_3ad_stats_size() + nla_total_size(0);
}
static int bond_fill_linkxstats(struct sk_buff *skb,
const struct net_device *dev,
int *prividx, int attr)
{
struct nlattr *nla __maybe_unused;
struct slave *slave = NULL;
struct nlattr *nest, *nest2;
struct bonding *bond;
switch (attr) {
case IFLA_STATS_LINK_XSTATS:
bond = netdev_priv(dev);
break;
case IFLA_STATS_LINK_XSTATS_SLAVE:
slave = bond_slave_get_rtnl(dev);
if (!slave)
return 0;
bond = slave->bond;
break;
default:
return -EINVAL;
}
nest = nla_nest_start_noflag(skb, LINK_XSTATS_TYPE_BOND);
if (!nest)
return -EMSGSIZE;
if (BOND_MODE(bond) == BOND_MODE_8023AD) {
struct bond_3ad_stats *stats;
if (slave)
stats = &SLAVE_AD_INFO(slave)->stats;
else
stats = &BOND_AD_INFO(bond).stats;
nest2 = nla_nest_start_noflag(skb, BOND_XSTATS_3AD);
if (!nest2) {
nla_nest_end(skb, nest);
return -EMSGSIZE;
}
if (bond_3ad_stats_fill(skb, stats)) {
nla_nest_cancel(skb, nest2);
nla_nest_end(skb, nest);
return -EMSGSIZE;
}
nla_nest_end(skb, nest2);
}
nla_nest_end(skb, nest);
return 0;
}
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 */
.fill_linkxstats = bond_fill_linkxstats,
.get_linkxstats_size = bond_get_linkxstats_size,
.slave_maxtype = IFLA_BOND_SLAVE_MAX,
.slave_policy = bond_slave_policy,
.slave_changelink = bond_slave_changelink,
.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");
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