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c13ab3ff17
Add IFLA_BOND_PACKETS_PER_SLAVE to allow get/set of bonding parameter packets_per_slave via netlink. Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
431 lines
12 KiB
C
431 lines
12 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 <linux/reciprocal_div.h>
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#include "bonding.h"
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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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};
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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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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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err = bond_option_mode_set(bond, mode);
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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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if (ifindex == 0) {
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slave_dev = NULL;
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} else {
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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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}
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err = bond_option_active_slave_set(bond, slave_dev);
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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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err = bond_option_miimon_set(bond, miimon);
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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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err = bond_option_updelay_set(bond, updelay);
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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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err = bond_option_downdelay_set(bond, downdelay);
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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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err = bond_option_use_carrier_set(bond, use_carrier);
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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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err = bond_option_arp_interval_set(bond, arp_interval);
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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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__be32 targets[BOND_MAX_ARP_TARGETS] = { 0, };
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struct nlattr *attr;
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int i = 0, rem;
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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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targets[i++] = target;
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}
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err = bond_option_arp_ip_targets_set(bond, targets, i);
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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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err = bond_option_arp_validate_set(bond, arp_validate);
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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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err = bond_option_arp_all_targets_set(bond, arp_all_targets);
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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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err = bond_option_primary_set(bond, primary);
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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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err = bond_option_primary_reselect_set(bond, primary_reselect);
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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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err = bond_option_fail_over_mac_set(bond, fail_over_mac);
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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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err = bond_option_xmit_hash_policy_set(bond, xmit_hash_policy);
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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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err = bond_option_resend_igmp_set(bond, resend_igmp);
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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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err = bond_option_num_peer_notif_set(bond, num_peer_notif);
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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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err = bond_option_all_slaves_active_set(bond,
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all_slaves_active);
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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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err = bond_option_min_links_set(bond, min_links);
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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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err = bond_option_lp_interval_set(bond, lp_interval);
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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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err = bond_option_packets_per_slave_set(bond,
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packets_per_slave);
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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(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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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))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_MIIMON, bond->params.miimon))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_UPDELAY,
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bond->params.updelay * bond->params.miimon))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_DOWNDELAY,
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bond->params.downdelay * bond->params.miimon))
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goto nla_put_failure;
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if (nla_put_u8(skb, IFLA_BOND_USE_CARRIER, bond->params.use_carrier))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_ARP_INTERVAL, bond->params.arp_interval))
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goto nla_put_failure;
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targets = nla_nest_start(skb, IFLA_BOND_ARP_IP_TARGET);
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if (!targets)
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goto nla_put_failure;
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targets_added = 0;
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for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
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if (bond->params.arp_targets[i]) {
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nla_put_be32(skb, i, bond->params.arp_targets[i]);
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targets_added = 1;
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}
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}
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if (targets_added)
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nla_nest_end(skb, targets);
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else
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nla_nest_cancel(skb, targets);
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if (nla_put_u32(skb, IFLA_BOND_ARP_VALIDATE, bond->params.arp_validate))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_ARP_ALL_TARGETS,
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bond->params.arp_all_targets))
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goto nla_put_failure;
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if (bond->primary_slave &&
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nla_put_u32(skb, IFLA_BOND_PRIMARY,
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bond->primary_slave->dev->ifindex))
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goto nla_put_failure;
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if (nla_put_u8(skb, IFLA_BOND_PRIMARY_RESELECT,
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bond->params.primary_reselect))
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goto nla_put_failure;
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if (nla_put_u8(skb, IFLA_BOND_FAIL_OVER_MAC,
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bond->params.fail_over_mac))
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goto nla_put_failure;
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if (nla_put_u8(skb, IFLA_BOND_XMIT_HASH_POLICY,
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bond->params.xmit_policy))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_RESEND_IGMP,
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bond->params.resend_igmp))
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goto nla_put_failure;
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if (nla_put_u8(skb, IFLA_BOND_NUM_PEER_NOTIF,
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bond->params.num_peer_notif))
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goto nla_put_failure;
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if (nla_put_u8(skb, IFLA_BOND_ALL_SLAVES_ACTIVE,
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bond->params.all_slaves_active))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_MIN_LINKS,
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bond->params.min_links))
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goto nla_put_failure;
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if (nla_put_u32(skb, IFLA_BOND_LP_INTERVAL,
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bond->params.lp_interval))
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goto nla_put_failure;
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packets_per_slave = bond->params.packets_per_slave;
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if (packets_per_slave > 1)
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packets_per_slave = reciprocal_value(packets_per_slave);
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if (nla_put_u32(skb, IFLA_BOND_PACKETS_PER_SLAVE,
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packets_per_slave))
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goto nla_put_failure;
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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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struct rtnl_link_ops bond_link_ops __read_mostly = {
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.kind = "bond",
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.priv_size = sizeof(struct bonding),
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.setup = bond_setup,
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.maxtype = IFLA_BOND_MAX,
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.policy = bond_policy,
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.validate = bond_validate,
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.newlink = bond_newlink,
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.changelink = bond_changelink,
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.get_size = bond_get_size,
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.fill_info = bond_fill_info,
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.get_num_tx_queues = bond_get_num_tx_queues,
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.get_num_rx_queues = bond_get_num_tx_queues, /* Use the same number
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as for TX queues */
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};
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int __init bond_netlink_init(void)
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{
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return rtnl_link_register(&bond_link_ops);
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}
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void bond_netlink_fini(void)
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{
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rtnl_link_unregister(&bond_link_ops);
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}
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MODULE_ALIAS_RTNL_LINK("bond");
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