bond: Add support for multiple network namespaces
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 4059713..208d2c4 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -75,6 +75,7 @@
#include <linux/jiffies.h>
#include <net/route.h>
#include <net/net_namespace.h>
+#include <net/netns/generic.h>
#include "bonding.h"
#include "bond_3ad.h"
#include "bond_alb.h"
@@ -157,11 +158,7 @@
static const char * const version =
DRV_DESCRIPTION ": v" DRV_VERSION " (" DRV_RELDATE ")\n";
-LIST_HEAD(bond_dev_list);
-
-#ifdef CONFIG_PROC_FS
-static struct proc_dir_entry *bond_proc_dir;
-#endif
+int bond_net_id;
static __be32 arp_target[BOND_MAX_ARP_TARGETS];
static int arp_ip_count;
@@ -2586,7 +2583,7 @@
fl.fl4_dst = targets[i];
fl.fl4_tos = RTO_ONLINK;
- rv = ip_route_output_key(&init_net, &rt, &fl);
+ rv = ip_route_output_key(dev_net(bond->dev), &rt, &fl);
if (rv) {
if (net_ratelimit()) {
pr_warning(DRV_NAME
@@ -2694,9 +2691,6 @@
unsigned char *arp_ptr;
__be32 sip, tip;
- if (dev_net(dev) != &init_net)
- goto out;
-
if (!(dev->priv_flags & IFF_BONDING) || !(dev->flags & IFF_MASTER))
goto out;
@@ -3359,10 +3353,11 @@
static void bond_create_proc_entry(struct bonding *bond)
{
struct net_device *bond_dev = bond->dev;
+ struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
- if (bond_proc_dir) {
+ if (bn->proc_dir) {
bond->proc_entry = proc_create_data(bond_dev->name,
- S_IRUGO, bond_proc_dir,
+ S_IRUGO, bn->proc_dir,
&bond_info_fops, bond);
if (bond->proc_entry == NULL)
pr_warning(DRV_NAME
@@ -3375,8 +3370,11 @@
static void bond_remove_proc_entry(struct bonding *bond)
{
- if (bond_proc_dir && bond->proc_entry) {
- remove_proc_entry(bond->proc_file_name, bond_proc_dir);
+ struct net_device *bond_dev = bond->dev;
+ struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
+
+ if (bn->proc_dir && bond->proc_entry) {
+ remove_proc_entry(bond->proc_file_name, bn->proc_dir);
memset(bond->proc_file_name, 0, IFNAMSIZ);
bond->proc_entry = NULL;
}
@@ -3385,11 +3383,11 @@
/* Create the bonding directory under /proc/net, if doesn't exist yet.
* Caller must hold rtnl_lock.
*/
-static void bond_create_proc_dir(void)
+static void bond_create_proc_dir(struct bond_net *bn)
{
- if (!bond_proc_dir) {
- bond_proc_dir = proc_mkdir(DRV_NAME, init_net.proc_net);
- if (!bond_proc_dir)
+ if (!bn->proc_dir) {
+ bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
+ if (!bn->proc_dir)
pr_warning(DRV_NAME
": Warning: cannot create /proc/net/%s\n",
DRV_NAME);
@@ -3399,11 +3397,11 @@
/* Destroy the bonding directory under /proc/net, if empty.
* Caller must hold rtnl_lock.
*/
-static void bond_destroy_proc_dir(void)
+static void bond_destroy_proc_dir(struct bond_net *bn)
{
- if (bond_proc_dir) {
- remove_proc_entry(DRV_NAME, init_net.proc_net);
- bond_proc_dir = NULL;
+ if (bn->proc_dir) {
+ remove_proc_entry(DRV_NAME, bn->net->proc_net);
+ bn->proc_dir = NULL;
}
}
@@ -3417,11 +3415,11 @@
{
}
-static void bond_create_proc_dir(void)
+static void bond_create_proc_dir(struct bond_net *bn)
{
}
-static void bond_destroy_proc_dir(void)
+static void bond_destroy_proc_dir(struct bond_net *bn)
{
}
@@ -3540,9 +3538,6 @@
{
struct net_device *event_dev = (struct net_device *)ptr;
- if (dev_net(event_dev) != &init_net)
- return NOTIFY_DONE;
-
pr_debug("event_dev: %s, event: %lx\n",
(event_dev ? event_dev->name : "None"),
event);
@@ -3575,13 +3570,11 @@
{
struct in_ifaddr *ifa = ptr;
struct net_device *vlan_dev, *event_dev = ifa->ifa_dev->dev;
+ struct bond_net *bn = net_generic(dev_net(event_dev), bond_net_id);
struct bonding *bond;
struct vlan_entry *vlan;
- if (dev_net(ifa->ifa_dev->dev) != &init_net)
- return NOTIFY_DONE;
-
- list_for_each_entry(bond, &bond_dev_list, bond_list) {
+ list_for_each_entry(bond, &bn->dev_list, bond_list) {
if (bond->dev == event_dev) {
switch (event) {
case NETDEV_UP:
@@ -3950,7 +3943,7 @@
if (!capable(CAP_NET_ADMIN))
return -EPERM;
- slave_dev = dev_get_by_name(&init_net, ifr->ifr_slave);
+ slave_dev = dev_get_by_name(dev_net(bond_dev), ifr->ifr_slave);
pr_debug("slave_dev=%p: \n", slave_dev);
@@ -5031,6 +5024,7 @@
static int bond_init(struct net_device *bond_dev)
{
struct bonding *bond = netdev_priv(bond_dev);
+ struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
pr_debug("Begin bond_init for %s\n", bond_dev->name);
@@ -5043,7 +5037,7 @@
netif_carrier_off(bond_dev);
bond_create_proc_entry(bond);
- list_add_tail(&bond->bond_list, &bond_dev_list);
+ list_add_tail(&bond->bond_list, &bn->dev_list);
bond_prepare_sysfs_group(bond);
return 0;
@@ -5071,7 +5065,7 @@
* Caller must NOT hold rtnl_lock; we need to release it here before we
* set up our sysfs entries.
*/
-int bond_create(const char *name)
+int bond_create(struct net *net, const char *name)
{
struct net_device *bond_dev;
int res;
@@ -5087,6 +5081,7 @@
goto out;
}
+ dev_net_set(bond_dev, net);
bond_dev->rtnl_link_ops = &bond_link_ops;
if (!name) {
@@ -5105,6 +5100,46 @@
goto out;
}
+static int bond_net_init(struct net *net)
+{
+ struct bond_net *bn;
+ int err;
+
+ err = -ENOMEM;
+ bn = kzalloc(sizeof(struct bond_net), GFP_KERNEL);
+ if (bn == NULL)
+ goto out;
+
+ bn->net = net;
+ INIT_LIST_HEAD(&bn->dev_list);
+
+ err = net_assign_generic(net, bond_net_id, bn);
+ if (err)
+ goto out_free;
+
+ bond_create_proc_dir(bn);
+out:
+ return err;
+out_free:
+ kfree(bn);
+ goto out;
+}
+
+static void bond_net_exit(struct net *net)
+{
+ struct bond_net *bn;
+
+ bn = net_generic(net, bond_net_id);
+
+ bond_destroy_proc_dir(bn);
+ kfree(bn);
+}
+
+static struct pernet_operations bond_net_ops = {
+ .init = bond_net_init,
+ .exit = bond_net_exit,
+};
+
static int __init bonding_init(void)
{
int i;
@@ -5116,14 +5151,16 @@
if (res)
goto out;
- bond_create_proc_dir();
+ res = register_pernet_gen_subsys(&bond_net_id, &bond_net_ops);
+ if (res)
+ goto out;
res = rtnl_link_register(&bond_link_ops);
if (res)
goto err;
for (i = 0; i < max_bonds; i++) {
- res = bond_create(NULL);
+ res = bond_create(&init_net, NULL);
if (res)
goto err;
}
@@ -5139,7 +5176,7 @@
return res;
err:
rtnl_link_unregister(&bond_link_ops);
- bond_destroy_proc_dir();
+ unregister_pernet_gen_subsys(bond_net_id, &bond_net_ops);
goto out;
}
@@ -5153,7 +5190,7 @@
bond_destroy_sysfs();
rtnl_link_unregister(&bond_link_ops);
- bond_destroy_proc_dir();
+ unregister_pernet_gen_subsys(bond_net_id, &bond_net_ops);
}
module_init(bonding_init);