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Commit f6bb4514 authored by Benjamin Thery's avatar Benjamin Thery Committed by David S. Miller
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netns: ipmr: declare ipmr /proc/net entries per-namespace 



Declare IPv4 multicast forwarding /proc/net entries per-namespace:
/proc/net/ip_mr_vif
/proc/net/ip_mr_cache

Signed-off-by: default avatarBenjamin Thery <benjamin.thery@bull.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6c5143db

net/ipv4/ipmr.c

+62 −39
Original line number Diff line number Diff line
@@ -1671,17 +1671,19 @@ int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait) 
 *	The /proc interfaces to multicast routing /proc/ip_mr_cache /proc/ip_mr_vif

 */

struct ipmr_vif_iter {

	struct seq_net_private p;

	int ct;

};



static struct vif_device *ipmr_vif_seq_idx(struct ipmr_vif_iter *iter,

static struct vif_device *ipmr_vif_seq_idx(struct net *net,

					   struct ipmr_vif_iter *iter,

					   loff_t pos)

{

	for (iter->ct = 0; iter->ct < init_net.ipv4.maxvif; ++iter->ct) {

		if (!VIF_EXISTS(&init_net, iter->ct))

	for (iter->ct = 0; iter->ct < net->ipv4.maxvif; ++iter->ct) {

		if (!VIF_EXISTS(net, iter->ct))

			continue;

		if (pos-- == 0)

			return &init_net.ipv4.vif_table[iter->ct];

			return &net->ipv4.vif_table[iter->ct];

	}

	return NULL;

}
@@ -1689,23 +1691,26 @@ static struct vif_device *ipmr_vif_seq_idx(struct ipmr_vif_iter *iter, 
static void *ipmr_vif_seq_start(struct seq_file *seq, loff_t *pos)

	__acquires(mrt_lock)

{

	struct net *net = seq_file_net(seq);



	read_lock(&mrt_lock);

	return *pos ? ipmr_vif_seq_idx(seq->private, *pos - 1)

	return *pos ? ipmr_vif_seq_idx(net, seq->private, *pos - 1)

		: SEQ_START_TOKEN;

}



static void *ipmr_vif_seq_next(struct seq_file *seq, void *v, loff_t *pos)

{

	struct ipmr_vif_iter *iter = seq->private;

	struct net *net = seq_file_net(seq);



	++*pos;

	if (v == SEQ_START_TOKEN)

		return ipmr_vif_seq_idx(iter, 0);

		return ipmr_vif_seq_idx(net, iter, 0);



	while (++iter->ct < init_net.ipv4.maxvif) {

		if (!VIF_EXISTS(&init_net, iter->ct))

	while (++iter->ct < net->ipv4.maxvif) {

		if (!VIF_EXISTS(net, iter->ct))

			continue;

		return &init_net.ipv4.vif_table[iter->ct];

		return &net->ipv4.vif_table[iter->ct];

	}

	return NULL;

}
@@ -1718,6 +1723,8 @@ static void ipmr_vif_seq_stop(struct seq_file *seq, void *v) 


static int ipmr_vif_seq_show(struct seq_file *seq, void *v)

{

	struct net *net = seq_file_net(seq);



	if (v == SEQ_START_TOKEN) {

		seq_puts(seq,

			 "Interface      BytesIn  PktsIn  BytesOut PktsOut Flags Local    Remote\n");
@@ -1727,7 +1734,7 @@ static int ipmr_vif_seq_show(struct seq_file *seq, void *v) 


		seq_printf(seq,

			   "%2Zd %-10s %8ld %7ld  %8ld %7ld %05X %08X %08X\n",

			   vif - init_net.ipv4.vif_table,

			   vif - net->ipv4.vif_table,

			   name, vif->bytes_in, vif->pkt_in,

			   vif->bytes_out, vif->pkt_out,

			   vif->flags, vif->local, vif->remote);
@@ -1744,7 +1751,7 @@ static const struct seq_operations ipmr_vif_seq_ops = { 


static int ipmr_vif_open(struct inode *inode, struct file *file)

{

	return seq_open_private(file, &ipmr_vif_seq_ops,

	return seq_open_net(inode, file, &ipmr_vif_seq_ops,

			    sizeof(struct ipmr_vif_iter));

}
@@ -1753,23 +1760,25 @@ static const struct file_operations ipmr_vif_fops = { 
	.open    = ipmr_vif_open,

	.read    = seq_read,

	.llseek  = seq_lseek,

	.release = seq_release_private,

	.release = seq_release_net,

};



struct ipmr_mfc_iter {

	struct seq_net_private p;

	struct mfc_cache **cache;

	int ct;

};





static struct mfc_cache *ipmr_mfc_seq_idx(struct ipmr_mfc_iter *it, loff_t pos)

static struct mfc_cache *ipmr_mfc_seq_idx(struct net *net,

					  struct ipmr_mfc_iter *it, loff_t pos)

{

	struct mfc_cache *mfc;



	it->cache = init_net.ipv4.mfc_cache_array;

	it->cache = net->ipv4.mfc_cache_array;

	read_lock(&mrt_lock);

	for (it->ct = 0; it->ct < MFC_LINES; it->ct++)

		for (mfc = init_net.ipv4.mfc_cache_array[it->ct];

		for (mfc = net->ipv4.mfc_cache_array[it->ct];

		     mfc; mfc = mfc->next)

			if (pos-- == 0)

				return mfc;
@@ -1778,7 +1787,8 @@ static struct mfc_cache *ipmr_mfc_seq_idx(struct ipmr_mfc_iter *it, loff_t pos) 
	it->cache = &mfc_unres_queue;

	spin_lock_bh(&mfc_unres_lock);

	for (mfc = mfc_unres_queue; mfc; mfc = mfc->next)

		if (pos-- == 0)

		if (net_eq(mfc_net(mfc), net) &&

		    pos-- == 0)

			return mfc;

	spin_unlock_bh(&mfc_unres_lock);
@@ -1790,9 +1800,11 @@ static struct mfc_cache *ipmr_mfc_seq_idx(struct ipmr_mfc_iter *it, loff_t pos) 
static void *ipmr_mfc_seq_start(struct seq_file *seq, loff_t *pos)

{

	struct ipmr_mfc_iter *it = seq->private;

	struct net *net = seq_file_net(seq);



	it->cache = NULL;

	it->ct = 0;

	return *pos ? ipmr_mfc_seq_idx(seq->private, *pos - 1)

	return *pos ? ipmr_mfc_seq_idx(net, seq->private, *pos - 1)

		: SEQ_START_TOKEN;

}
@@ -1800,11 +1812,12 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) 
{

	struct mfc_cache *mfc = v;

	struct ipmr_mfc_iter *it = seq->private;

	struct net *net = seq_file_net(seq);



	++*pos;



	if (v == SEQ_START_TOKEN)

		return ipmr_mfc_seq_idx(seq->private, 0);

		return ipmr_mfc_seq_idx(net, seq->private, 0);



	if (mfc->next)

		return mfc->next;
@@ -1812,10 +1825,10 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) 
	if (it->cache == &mfc_unres_queue)

		goto end_of_list;



	BUG_ON(it->cache != init_net.ipv4.mfc_cache_array);

	BUG_ON(it->cache != net->ipv4.mfc_cache_array);



	while (++it->ct < MFC_LINES) {

		mfc = init_net.ipv4.mfc_cache_array[it->ct];

		mfc = net->ipv4.mfc_cache_array[it->ct];

		if (mfc)

			return mfc;

	}
@@ -1827,6 +1840,8 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) 


	spin_lock_bh(&mfc_unres_lock);

	mfc = mfc_unres_queue;

	while (mfc && !net_eq(mfc_net(mfc), net))

		mfc = mfc->next;

	if (mfc)

		return mfc;
@@ -1840,16 +1855,18 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos) 
static void ipmr_mfc_seq_stop(struct seq_file *seq, void *v)

{

	struct ipmr_mfc_iter *it = seq->private;

	struct net *net = seq_file_net(seq);



	if (it->cache == &mfc_unres_queue)

		spin_unlock_bh(&mfc_unres_lock);

	else if (it->cache == init_net.ipv4.mfc_cache_array)

	else if (it->cache == net->ipv4.mfc_cache_array)

		read_unlock(&mrt_lock);

}



static int ipmr_mfc_seq_show(struct seq_file *seq, void *v)

{

	int n;

	struct net *net = seq_file_net(seq);



	if (v == SEQ_START_TOKEN) {

		seq_puts(seq,
@@ -1870,7 +1887,7 @@ static int ipmr_mfc_seq_show(struct seq_file *seq, void *v) 
				   mfc->mfc_un.res.wrong_if);

			for (n = mfc->mfc_un.res.minvif;

			     n < mfc->mfc_un.res.maxvif; n++ ) {

				if (VIF_EXISTS(&init_net, n) &&

				if (VIF_EXISTS(net, n) &&

				    mfc->mfc_un.res.ttls[n] < 255)

					seq_printf(seq,

					   " %2d:%-3d",
@@ -1896,7 +1913,7 @@ static const struct seq_operations ipmr_mfc_seq_ops = { 


static int ipmr_mfc_open(struct inode *inode, struct file *file)

{

	return seq_open_private(file, &ipmr_mfc_seq_ops,

	return seq_open_net(inode, file, &ipmr_mfc_seq_ops,

			    sizeof(struct ipmr_mfc_iter));

}
@@ -1905,7 +1922,7 @@ static const struct file_operations ipmr_mfc_fops = { 
	.open    = ipmr_mfc_open,

	.read    = seq_read,

	.llseek  = seq_lseek,

	.release = seq_release_private,

	.release = seq_release_net,

};

#endif
@@ -1942,8 +1959,22 @@ static int __net_init ipmr_net_init(struct net *net) 
#ifdef CONFIG_IP_PIMSM

	net->ipv4.mroute_reg_vif_num = -1;

#endif



#ifdef CONFIG_PROC_FS

	err = -ENOMEM;

	if (!proc_net_fops_create(net, "ip_mr_vif", 0, &ipmr_vif_fops))

		goto proc_vif_fail;

	if (!proc_net_fops_create(net, "ip_mr_cache", 0, &ipmr_mfc_fops))

		goto proc_cache_fail;

#endif

	return 0;



#ifdef CONFIG_PROC_FS

proc_cache_fail:

	proc_net_remove(net, "ip_mr_vif");

proc_vif_fail:

	kfree(net->ipv4.mfc_cache_array);

#endif

fail_mfc_cache:

	kfree(net->ipv4.vif_table);

fail:
@@ -1952,6 +1983,10 @@ fail: 


static void __net_exit ipmr_net_exit(struct net *net)

{

#ifdef CONFIG_PROC_FS

	proc_net_remove(net, "ip_mr_cache");

	proc_net_remove(net, "ip_mr_vif");

#endif

	kfree(net->ipv4.mfc_cache_array);

	kfree(net->ipv4.vif_table);

}
@@ -1980,20 +2015,8 @@ int __init ip_mr_init(void) 
	err = register_netdevice_notifier(&ip_mr_notifier);

	if (err)

		goto reg_notif_fail;

#ifdef CONFIG_PROC_FS

	err = -ENOMEM;

	if (!proc_net_fops_create(&init_net, "ip_mr_vif", 0, &ipmr_vif_fops))

		goto proc_vif_fail;

	if (!proc_net_fops_create(&init_net, "ip_mr_cache", 0, &ipmr_mfc_fops))

		goto proc_cache_fail;

#endif

	return 0;

#ifdef CONFIG_PROC_FS

proc_cache_fail:

	proc_net_remove(&init_net, "ip_mr_vif");

proc_vif_fail:

	unregister_netdevice_notifier(&ip_mr_notifier);

#endif



reg_notif_fail:

	del_timer(&ipmr_expire_timer);

	unregister_pernet_subsys(&ipmr_net_ops);