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Commit 2aaef4e4 authored by Denis V. Lunev's avatar Denis V. Lunev Committed by David S. Miller
Browse files

[NETNS]: separate af_packet netns data 



Signed-off-by: default avatarDenis V. Lunev <den@openvz.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a0a53c8b

include/net/net_namespace.h

+2 −4
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/list.h>



#include <net/netns/unix.h>

#include <net/netns/packet.h>



struct proc_dir_entry;

struct net_device;
@@ -43,10 +44,7 @@ struct net { 
	struct ctl_table_header	*sysctl_core_hdr;

	int			sysctl_somaxconn;



	/* List of all packet sockets. */

	rwlock_t		packet_sklist_lock;

	struct hlist_head	packet_sklist;



	struct netns_packet	packet;

	struct netns_unix	unx;

};

include/net/netns/packet.h

0 → 100644
+15 −0
Original line number Diff line number Diff line 
/*

 * Packet network namespace

 */

#ifndef __NETNS_PACKET_H__

#define __NETNS_PACKET_H__



#include <linux/list.h>

#include <linux/spinlock.h>



struct netns_packet {

	rwlock_t		sklist_lock;

	struct hlist_head	sklist;

};



#endif /* __NETNS_PACKET_H__ */

net/packet/af_packet.c

+14 −14
Original line number Diff line number Diff line
@@ -803,9 +803,9 @@ static int packet_release(struct socket *sock) 
	net = sk->sk_net;

	po = pkt_sk(sk);



	write_lock_bh(&net->packet_sklist_lock);

	write_lock_bh(&net->packet.sklist_lock);

	sk_del_node_init(sk);

	write_unlock_bh(&net->packet_sklist_lock);

	write_unlock_bh(&net->packet.sklist_lock);



	/*

	 *	Unhook packet receive handler.
@@ -1015,9 +1015,9 @@ static int packet_create(struct net *net, struct socket *sock, int protocol) 
		po->running = 1;

	}



	write_lock_bh(&net->packet_sklist_lock);

	sk_add_node(sk, &net->packet_sklist);

	write_unlock_bh(&net->packet_sklist_lock);

	write_lock_bh(&net->packet.sklist_lock);

	sk_add_node(sk, &net->packet.sklist);

	write_unlock_bh(&net->packet.sklist_lock);

	return(0);

out:

	return err;
@@ -1452,8 +1452,8 @@ static int packet_notifier(struct notifier_block *this, unsigned long msg, void 
	struct net_device *dev = data;

	struct net *net = dev->nd_net;



	read_lock(&net->packet_sklist_lock);

	sk_for_each(sk, node, &net->packet_sklist) {

	read_lock(&net->packet.sklist_lock);

	sk_for_each(sk, node, &net->packet.sklist) {

		struct packet_sock *po = pkt_sk(sk);



		switch (msg) {
@@ -1492,7 +1492,7 @@ static int packet_notifier(struct notifier_block *this, unsigned long msg, void 
			break;

		}

	}

	read_unlock(&net->packet_sklist_lock);

	read_unlock(&net->packet.sklist_lock);

	return NOTIFY_DONE;

}
@@ -1862,7 +1862,7 @@ static inline struct sock *packet_seq_idx(struct net *net, loff_t off) 
	struct sock *s;

	struct hlist_node *node;



	sk_for_each(s, node, &net->packet_sklist) {

	sk_for_each(s, node, &net->packet.sklist) {

		if (!off--)

			return s;

	}
@@ -1872,7 +1872,7 @@ static inline struct sock *packet_seq_idx(struct net *net, loff_t off) 
static void *packet_seq_start(struct seq_file *seq, loff_t *pos)

{

	struct net *net = seq_file_net(seq);

	read_lock(&net->packet_sklist_lock);

	read_lock(&net->packet.sklist_lock);

	return *pos ? packet_seq_idx(net, *pos - 1) : SEQ_START_TOKEN;

}
@@ -1881,14 +1881,14 @@ static void *packet_seq_next(struct seq_file *seq, void *v, loff_t *pos) 
	struct net *net = seq->private;

	++*pos;

	return  (v == SEQ_START_TOKEN)

		? sk_head(&net->packet_sklist)

		? sk_head(&net->packet.sklist)

		: sk_next((struct sock*)v) ;

}



static void packet_seq_stop(struct seq_file *seq, void *v)

{

	struct net *net = seq->private;

	read_unlock(&net->packet_sklist_lock);

	read_unlock(&net->packet.sklist_lock);

}



static int packet_seq_show(struct seq_file *seq, void *v)
@@ -1940,8 +1940,8 @@ static const struct file_operations packet_seq_fops = { 


static int packet_net_init(struct net *net)

{

	rwlock_init(&net->packet_sklist_lock);

	INIT_HLIST_HEAD(&net->packet_sklist);

	rwlock_init(&net->packet.sklist_lock);

	INIT_HLIST_HEAD(&net->packet.sklist);



	if (!proc_net_fops_create(net, "packet", 0, &packet_seq_fops))

		return -ENOMEM;