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bonding: Remove obsolete source file 'bond_ipv6.c'
This file is now unused and should have been removed by commit
7c89943236 ("bonding, ipv4, ipv6, vlan:
Handle NETDEV_BONDING_FAILOVER like NETDEV_NOTIFY_PEERS").
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings
David S. Miller
parent
d11ead7567
commit
4f5762ec91
@ -1,223 +0,0 @@
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/*
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* Copyright(c) 2008 Hewlett-Packard Development Company, L.P.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* 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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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/types.h>
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#include <linux/if_vlan.h>
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#include <net/ipv6.h>
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#include <net/ndisc.h>
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#include <net/addrconf.h>
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#include <net/netns/generic.h>
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#include "bonding.h"
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/*
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* Assign bond->master_ipv6 to the next IPv6 address in the list, or
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* zero it out if there are none.
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*/
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static void bond_glean_dev_ipv6(struct net_device *dev, struct in6_addr *addr)
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{
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struct inet6_dev *idev;
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if (!dev)
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return;
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idev = in6_dev_get(dev);
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if (!idev)
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return;
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read_lock_bh(&idev->lock);
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if (!list_empty(&idev->addr_list)) {
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struct inet6_ifaddr *ifa
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= list_first_entry(&idev->addr_list,
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struct inet6_ifaddr, if_list);
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*addr = ifa->addr;
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} else
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ipv6_addr_set(addr, 0, 0, 0, 0);
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read_unlock_bh(&idev->lock);
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in6_dev_put(idev);
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}
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static void bond_na_send(struct net_device *slave_dev,
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struct in6_addr *daddr,
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int router,
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unsigned short vlan_id)
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{
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struct in6_addr mcaddr;
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struct icmp6hdr icmp6h = {
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.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT,
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};
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struct sk_buff *skb;
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icmp6h.icmp6_router = router;
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icmp6h.icmp6_solicited = 0;
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icmp6h.icmp6_override = 1;
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addrconf_addr_solict_mult(daddr, &mcaddr);
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pr_debug("ipv6 na on slave %s: dest %pI6, src %pI6\n",
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slave_dev->name, &mcaddr, daddr);
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skb = ndisc_build_skb(slave_dev, &mcaddr, daddr, &icmp6h, daddr,
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ND_OPT_TARGET_LL_ADDR);
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if (!skb) {
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pr_err("NA packet allocation failed\n");
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return;
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}
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if (vlan_id) {
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/* The Ethernet header is not present yet, so it is
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* too early to insert a VLAN tag. Force use of an
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* out-of-line tag here and let dev_hard_start_xmit()
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* insert it if the slave hardware can't.
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*/
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skb = __vlan_hwaccel_put_tag(skb, vlan_id);
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if (!skb) {
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pr_err("failed to insert VLAN tag\n");
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return;
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}
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}
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ndisc_send_skb(skb, slave_dev, NULL, &mcaddr, daddr, &icmp6h);
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}
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/*
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* Kick out an unsolicited Neighbor Advertisement for an IPv6 address on
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* the bonding master. This will help the switch learn our address
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* if in active-backup mode.
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*
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* Caller must hold curr_slave_lock for read or better
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*/
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void bond_send_unsolicited_na(struct bonding *bond)
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{
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struct slave *slave = bond->curr_active_slave;
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struct vlan_entry *vlan;
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struct inet6_dev *idev;
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int is_router;
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pr_debug("%s: bond %s slave %s\n", bond->dev->name,
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__func__, slave ? slave->dev->name : "NULL");
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if (!slave || !bond->send_unsol_na ||
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test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state))
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return;
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bond->send_unsol_na--;
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idev = in6_dev_get(bond->dev);
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if (!idev)
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return;
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is_router = !!idev->cnf.forwarding;
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in6_dev_put(idev);
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if (!ipv6_addr_any(&bond->master_ipv6))
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bond_na_send(slave->dev, &bond->master_ipv6, is_router, 0);
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list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
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if (!ipv6_addr_any(&vlan->vlan_ipv6)) {
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bond_na_send(slave->dev, &vlan->vlan_ipv6, is_router,
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vlan->vlan_id);
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}
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}
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}
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/*
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* bond_inet6addr_event: handle inet6addr notifier chain events.
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*
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* We keep track of device IPv6 addresses primarily to use as source
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* addresses in NS probes.
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*
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* We track one IPv6 for the main device (if it has one).
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*/
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static int bond_inet6addr_event(struct notifier_block *this,
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unsigned long event,
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void *ptr)
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{
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struct inet6_ifaddr *ifa = ptr;
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struct net_device *vlan_dev, *event_dev = ifa->idev->dev;
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struct bonding *bond;
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struct vlan_entry *vlan;
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struct bond_net *bn = net_generic(dev_net(event_dev), bond_net_id);
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list_for_each_entry(bond, &bn->dev_list, bond_list) {
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if (bond->dev == event_dev) {
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switch (event) {
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case NETDEV_UP:
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if (ipv6_addr_any(&bond->master_ipv6))
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bond->master_ipv6 = ifa->addr;
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return NOTIFY_OK;
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case NETDEV_DOWN:
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if (ipv6_addr_equal(&bond->master_ipv6,
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&ifa->addr))
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bond_glean_dev_ipv6(bond->dev,
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&bond->master_ipv6);
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return NOTIFY_OK;
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default:
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return NOTIFY_DONE;
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}
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}
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list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
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rcu_read_lock();
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vlan_dev = __vlan_find_dev_deep(bond->dev,
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vlan->vlan_id);
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rcu_read_unlock();
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if (vlan_dev == event_dev) {
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switch (event) {
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case NETDEV_UP:
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if (ipv6_addr_any(&vlan->vlan_ipv6))
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vlan->vlan_ipv6 = ifa->addr;
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return NOTIFY_OK;
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case NETDEV_DOWN:
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if (ipv6_addr_equal(&vlan->vlan_ipv6,
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&ifa->addr))
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bond_glean_dev_ipv6(vlan_dev,
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&vlan->vlan_ipv6);
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return NOTIFY_OK;
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default:
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return NOTIFY_DONE;
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}
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}
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}
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}
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return NOTIFY_DONE;
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}
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static struct notifier_block bond_inet6addr_notifier = {
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.notifier_call = bond_inet6addr_event,
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};
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void bond_register_ipv6_notifier(void)
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{
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register_inet6addr_notifier(&bond_inet6addr_notifier);
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}
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void bond_unregister_ipv6_notifier(void)
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{
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unregister_inet6addr_notifier(&bond_inet6addr_notifier);
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}
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