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Message-ID: <20080908003539.GA575@x200.localdomain>
Date: Mon, 8 Sep 2008 04:35:39 +0400
From: Alexey Dobriyan <adobriyan@...il.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, containters@...ts.osdl.org
Subject: [PATCH] igmp: make /proc/net/{igmp,mcfilter} per netns
Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---
net/ipv4/igmp.c | 49 ++++++++++++++++++++++++++++++++++++++++---------
1 file changed, 40 insertions(+), 9 deletions(-)
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -2272,6 +2272,7 @@ int ip_check_mc(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 p
#if defined(CONFIG_PROC_FS)
struct igmp_mc_iter_state {
+ struct seq_net_private p;
struct net_device *dev;
struct in_device *in_dev;
};
@@ -2280,11 +2281,12 @@ struct igmp_mc_iter_state {
static inline struct ip_mc_list *igmp_mc_get_first(struct seq_file *seq)
{
+ struct net *net = seq_file_net(seq);
struct ip_mc_list *im = NULL;
struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq);
state->in_dev = NULL;
- for_each_netdev(&init_net, state->dev) {
+ for_each_netdev(net, state->dev) {
struct in_device *in_dev;
in_dev = in_dev_get(state->dev);
if (!in_dev)
@@ -2405,7 +2407,7 @@ static const struct seq_operations igmp_mc_seq_ops = {
static int igmp_mc_seq_open(struct inode *inode, struct file *file)
{
- return seq_open_private(file, &igmp_mc_seq_ops,
+ return seq_open_net(inode, file, &igmp_mc_seq_ops,
sizeof(struct igmp_mc_iter_state));
}
@@ -2414,10 +2416,11 @@ static const struct file_operations igmp_mc_seq_fops = {
.open = igmp_mc_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};
struct igmp_mcf_iter_state {
+ struct seq_net_private p;
struct net_device *dev;
struct in_device *idev;
struct ip_mc_list *im;
@@ -2427,13 +2430,14 @@ struct igmp_mcf_iter_state {
static inline struct ip_sf_list *igmp_mcf_get_first(struct seq_file *seq)
{
+ struct net *net = seq_file_net(seq);
struct ip_sf_list *psf = NULL;
struct ip_mc_list *im = NULL;
struct igmp_mcf_iter_state *state = igmp_mcf_seq_private(seq);
state->idev = NULL;
state->im = NULL;
- for_each_netdev(&init_net, state->dev) {
+ for_each_netdev(net, state->dev) {
struct in_device *idev;
idev = in_dev_get(state->dev);
if (unlikely(idev == NULL))
@@ -2564,7 +2568,7 @@ static const struct seq_operations igmp_mcf_seq_ops = {
static int igmp_mcf_seq_open(struct inode *inode, struct file *file)
{
- return seq_open_private(file, &igmp_mcf_seq_ops,
+ return seq_open_net(inode, file, &igmp_mcf_seq_ops,
sizeof(struct igmp_mcf_iter_state));
}
@@ -2573,14 +2577,41 @@ static const struct file_operations igmp_mcf_seq_fops = {
.open = igmp_mcf_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = seq_release_private,
+ .release = seq_release_net,
};
-int __init igmp_mc_proc_init(void)
+static int igmp_net_init(struct net *net)
{
- proc_net_fops_create(&init_net, "igmp", S_IRUGO, &igmp_mc_seq_fops);
- proc_net_fops_create(&init_net, "mcfilter", S_IRUGO, &igmp_mcf_seq_fops);
+ struct proc_dir_entry *pde;
+
+ pde = proc_net_fops_create(net, "igmp", S_IRUGO, &igmp_mc_seq_fops);
+ if (!pde)
+ goto out_igmp;
+ pde = proc_net_fops_create(net, "mcfilter", S_IRUGO, &igmp_mcf_seq_fops);
+ if (!pde)
+ goto out_mcfilter;
return 0;
+
+out_mcfilter:
+ proc_net_remove(net, "igmp");
+out_igmp:
+ return -ENOMEM;
+}
+
+static void igmp_net_exit(struct net *net)
+{
+ proc_net_remove(net, "mcfilter");
+ proc_net_remove(net, "igmp");
+}
+
+static struct pernet_operations igmp_net_ops = {
+ .init = igmp_net_init,
+ .exit = igmp_net_exit,
+};
+
+int __init igmp_mc_proc_init(void)
+{
+ return register_pernet_subsys(&igmp_net_ops);
}
#endif
--
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