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authorBen Hutchings <bhutchings@solarflare.com>2011-11-24 03:16:21 -0500
committerDavid S. Miller <davem@davemloft.net>2011-11-26 14:50:05 -0500
commit4f5762ec9135d24887844549de3c83e0290a3567 (patch)
tree30f7273649576a5e251ab913e7a6d72c8a13564d /drivers/net/bonding
parentd11ead75672d655652dbfc1b1a2c359e5b65536d (diff)
bonding: Remove obsolete source file 'bond_ipv6.c'
This file is now unused and should have been removed by commit 7c89943236750537d26421d9bbb6f6575e2d1e1b ("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>
Diffstat (limited to 'drivers/net/bonding')
-rw-r--r--drivers/net/bonding/bond_ipv6.c223
1 files changed, 0 insertions, 223 deletions
diff --git a/drivers/net/bonding/bond_ipv6.c b/drivers/net/bonding/bond_ipv6.c
deleted file mode 100644
index 7e6632221a75..000000000000
--- a/drivers/net/bonding/bond_ipv6.c
+++ /dev/null
@@ -1,223 +0,0 @@
1/*
2 * Copyright(c) 2008 Hewlett-Packard Development Company, L.P.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 */
22
23#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
25#include <linux/types.h>
26#include <linux/if_vlan.h>
27#include <net/ipv6.h>
28#include <net/ndisc.h>
29#include <net/addrconf.h>
30#include <net/netns/generic.h>
31#include "bonding.h"
32
33/*
34 * Assign bond->master_ipv6 to the next IPv6 address in the list, or
35 * zero it out if there are none.
36 */
37static void bond_glean_dev_ipv6(struct net_device *dev, struct in6_addr *addr)
38{
39 struct inet6_dev *idev;
40
41 if (!dev)
42 return;
43
44 idev = in6_dev_get(dev);
45 if (!idev)
46 return;
47
48 read_lock_bh(&idev->lock);
49 if (!list_empty(&idev->addr_list)) {
50 struct inet6_ifaddr *ifa
51 = list_first_entry(&idev->addr_list,
52 struct inet6_ifaddr, if_list);
53 *addr = ifa->addr;
54 } else
55 ipv6_addr_set(addr, 0, 0, 0, 0);
56
57 read_unlock_bh(&idev->lock);
58
59 in6_dev_put(idev);
60}
61
62static void bond_na_send(struct net_device *slave_dev,
63 struct in6_addr *daddr,
64 int router,
65 unsigned short vlan_id)
66{
67 struct in6_addr mcaddr;
68 struct icmp6hdr icmp6h = {
69 .icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT,
70 };
71 struct sk_buff *skb;
72
73 icmp6h.icmp6_router = router;
74 icmp6h.icmp6_solicited = 0;
75 icmp6h.icmp6_override = 1;
76
77 addrconf_addr_solict_mult(daddr, &mcaddr);
78
79 pr_debug("ipv6 na on slave %s: dest %pI6, src %pI6\n",
80 slave_dev->name, &mcaddr, daddr);
81
82 skb = ndisc_build_skb(slave_dev, &mcaddr, daddr, &icmp6h, daddr,
83 ND_OPT_TARGET_LL_ADDR);
84
85 if (!skb) {
86 pr_err("NA packet allocation failed\n");
87 return;
88 }
89
90 if (vlan_id) {
91 /* The Ethernet header is not present yet, so it is
92 * too early to insert a VLAN tag. Force use of an
93 * out-of-line tag here and let dev_hard_start_xmit()
94 * insert it if the slave hardware can't.
95 */
96 skb = __vlan_hwaccel_put_tag(skb, vlan_id);
97 if (!skb) {
98 pr_err("failed to insert VLAN tag\n");
99 return;
100 }
101 }
102
103 ndisc_send_skb(skb, slave_dev, NULL, &mcaddr, daddr, &icmp6h);
104}
105
106/*
107 * Kick out an unsolicited Neighbor Advertisement for an IPv6 address on
108 * the bonding master. This will help the switch learn our address
109 * if in active-backup mode.
110 *
111 * Caller must hold curr_slave_lock for read or better
112 */
113void bond_send_unsolicited_na(struct bonding *bond)
114{
115 struct slave *slave = bond->curr_active_slave;
116 struct vlan_entry *vlan;
117 struct inet6_dev *idev;
118 int is_router;
119
120 pr_debug("%s: bond %s slave %s\n", bond->dev->name,
121 __func__, slave ? slave->dev->name : "NULL");
122
123 if (!slave || !bond->send_unsol_na ||
124 test_bit(__LINK_STATE_LINKWATCH_PENDING, &slave->dev->state))
125 return;
126
127 bond->send_unsol_na--;
128
129 idev = in6_dev_get(bond->dev);
130 if (!idev)
131 return;
132
133 is_router = !!idev->cnf.forwarding;
134
135 in6_dev_put(idev);
136
137 if (!ipv6_addr_any(&bond->master_ipv6))
138 bond_na_send(slave->dev, &bond->master_ipv6, is_router, 0);
139
140 list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
141 if (!ipv6_addr_any(&vlan->vlan_ipv6)) {
142 bond_na_send(slave->dev, &vlan->vlan_ipv6, is_router,
143 vlan->vlan_id);
144 }
145 }
146}
147
148/*
149 * bond_inet6addr_event: handle inet6addr notifier chain events.
150 *
151 * We keep track of device IPv6 addresses primarily to use as source
152 * addresses in NS probes.
153 *
154 * We track one IPv6 for the main device (if it has one).
155 */
156static int bond_inet6addr_event(struct notifier_block *this,
157 unsigned long event,
158 void *ptr)
159{
160 struct inet6_ifaddr *ifa = ptr;
161 struct net_device *vlan_dev, *event_dev = ifa->idev->dev;
162 struct bonding *bond;
163 struct vlan_entry *vlan;
164 struct bond_net *bn = net_generic(dev_net(event_dev), bond_net_id);
165
166 list_for_each_entry(bond, &bn->dev_list, bond_list) {
167 if (bond->dev == event_dev) {
168 switch (event) {
169 case NETDEV_UP:
170 if (ipv6_addr_any(&bond->master_ipv6))
171 bond->master_ipv6 = ifa->addr;
172 return NOTIFY_OK;
173 case NETDEV_DOWN:
174 if (ipv6_addr_equal(&bond->master_ipv6,
175 &ifa->addr))
176 bond_glean_dev_ipv6(bond->dev,
177 &bond->master_ipv6);
178 return NOTIFY_OK;
179 default:
180 return NOTIFY_DONE;
181 }
182 }
183
184 list_for_each_entry(vlan, &bond->vlan_list, vlan_list) {
185 rcu_read_lock();
186 vlan_dev = __vlan_find_dev_deep(bond->dev,
187 vlan->vlan_id);
188 rcu_read_unlock();
189 if (vlan_dev == event_dev) {
190 switch (event) {
191 case NETDEV_UP:
192 if (ipv6_addr_any(&vlan->vlan_ipv6))
193 vlan->vlan_ipv6 = ifa->addr;
194 return NOTIFY_OK;
195 case NETDEV_DOWN:
196 if (ipv6_addr_equal(&vlan->vlan_ipv6,
197 &ifa->addr))
198 bond_glean_dev_ipv6(vlan_dev,
199 &vlan->vlan_ipv6);
200 return NOTIFY_OK;
201 default:
202 return NOTIFY_DONE;
203 }
204 }
205 }
206 }
207 return NOTIFY_DONE;
208}
209
210static struct notifier_block bond_inet6addr_notifier = {
211 .notifier_call = bond_inet6addr_event,
212};
213
214void bond_register_ipv6_notifier(void)
215{
216 register_inet6addr_notifier(&bond_inet6addr_notifier);
217}
218
219void bond_unregister_ipv6_notifier(void)
220{
221 unregister_inet6addr_notifier(&bond_inet6addr_notifier);
222}
223
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