[NET]: Support multiple network namespaces with netlink

[linux-2.6-omap-h63xx.git] / net / ipv6 / netfilter / ip6_queue.c

diff --git a/net/ipv6/netfilter/ip6_queue.c b/net/ipv6/netfilter/ip6_queue.c
index fdb30a5916e57b6c6cb8060640e49bf4197ed9bc..2f5a5245383425616a864b9c1df1690c6329be39 100644 (file)
--- a/net/ipv6/netfilter/ip6_queue.c
+++ b/net/ipv6/netfilter/ip6_queue.c
@@ -11,18 +11,6 @@
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
- *
- * 2001-11-06: First try. Working with ip_queue.c for IPv4 and trying
- *             to adapt it to IPv6
- *             HEAVILY based in ipqueue.c by James Morris. It's just
- *             a little modified version of it, so he's nearly the
- *             real coder of this.
- *             Few changes needed, mainly the hard_routing code and
- *             the netlink socket protocol (we're NETLINK_IP6_FW).
- * 2002-06-25: Code cleanup. [JM: ported cleanup over from ip_queue.c]
- * 2005-02-04: Added /proc counter for dropped packets; fixed so
- *             packets aren't delivered to user space if they're going
- *             to be dropped.
  */
 #include <linux/module.h>
 #include <linux/skbuff.h>
@@ -36,6 +24,7 @@
 #include <linux/sysctl.h>
 #include <linux/proc_fs.h>
 #include <linux/mutex.h>
+#include <net/net_namespace.h>
 #include <net/sock.h>
 #include <net/ipv6.h>
 #include <net/ip6_route.h>
@@ -189,12 +178,13 @@ ipq_flush(int verdict)
 static struct sk_buff *
 ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
 {
-       unsigned char *old_tail;
+       sk_buff_data_t old_tail;
        size_t size = 0;
        size_t data_len = 0;
        struct sk_buff *skb;
        struct ipq_packet_msg *pmsg;
        struct nlmsghdr *nlh;
+       struct timeval tv;
 
        read_lock_bh(&queue_lock);
 
@@ -232,15 +222,16 @@ ipq_build_packet_message(struct ipq_queue_entry *entry, int *errp)
        if (!skb)
                goto nlmsg_failure;
 
-       old_tail= skb->tail;
+       old_tail = skb->tail;
        nlh = NLMSG_PUT(skb, 0, 0, IPQM_PACKET, size - sizeof(*nlh));
        pmsg = NLMSG_DATA(nlh);
        memset(pmsg, 0, sizeof(*pmsg));
 
        pmsg->packet_id       = (unsigned long )entry;
        pmsg->data_len        = data_len;
-       pmsg->timestamp_sec   = entry->skb->tstamp.off_sec;
-       pmsg->timestamp_usec  = entry->skb->tstamp.off_usec;
+       tv = ktime_to_timeval(entry->skb->tstamp);
+       pmsg->timestamp_sec   = tv.tv_sec;
+       pmsg->timestamp_usec  = tv.tv_usec;
        pmsg->mark            = entry->skb->mark;
        pmsg->hook            = entry->info->hook;
        pmsg->hw_protocol     = entry->skb->protocol;
@@ -376,7 +367,7 @@ ipq_mangle_ipv6(ipq_verdict_msg_t *v, struct ipq_queue_entry *e)
        }
        if (!skb_make_writable(&e->skb, v->data_len))
                return -ENOMEM;
-       memcpy(e->skb->data, v->payload, v->data_len);
+       skb_copy_to_linear_data(e->skb, v->payload, v->data_len);
        e->skb->ip_summed = CHECKSUM_NONE;
 
        return 0;
@@ -485,7 +476,7 @@ ipq_rcv_skb(struct sk_buff *skb)
        if (skblen < sizeof(*nlh))
                return;
 
-       nlh = (struct nlmsghdr *)skb->data;
+       nlh = nlmsg_hdr(skb);
        nlmsglen = nlh->nlmsg_len;
        if (nlmsglen < sizeof(*nlh) || skblen < nlmsglen)
                return;
@@ -556,6 +547,9 @@ ipq_rcv_dev_event(struct notifier_block *this,
 {
        struct net_device *dev = ptr;
 
+       if (dev->nd_net != &init_net)
+               return NOTIFY_DONE;
+
        /* Drop any packets associated with the downed device */
        if (event == NETDEV_DOWN)
                ipq_dev_drop(dev->ifindex);
@@ -575,7 +569,7 @@ ipq_rcv_nl_event(struct notifier_block *this,
        if (event == NETLINK_URELEASE &&
            n->protocol == NETLINK_IP6_FW && n->pid) {
                write_lock_bh(&queue_lock);
-               if (n->pid == peer_pid)
+               if ((n->net == &init_net) && (n->pid == peer_pid))
                        __ipq_reset();
                write_unlock_bh(&queue_lock);
        }
@@ -667,14 +661,14 @@ static int __init ip6_queue_init(void)
        struct proc_dir_entry *proc;
 
        netlink_register_notifier(&ipq_nl_notifier);
-       ipqnl = netlink_kernel_create(NETLINK_IP6_FW, 0, ipq_rcv_sk,
-                                     THIS_MODULE);
+       ipqnl = netlink_kernel_create(&init_net, NETLINK_IP6_FW, 0, ipq_rcv_sk,
+                                       NULL, THIS_MODULE);
        if (ipqnl == NULL) {
                printk(KERN_ERR "ip6_queue: failed to create netlink socket\n");
                goto cleanup_netlink_notifier;
        }
 
-       proc = proc_net_create(IPQ_PROC_FS_NAME, 0, ipq_get_info);
+       proc = proc_net_create(&init_net, IPQ_PROC_FS_NAME, 0, ipq_get_info);
        if (proc)
                proc->owner = THIS_MODULE;
        else {
@@ -695,7 +689,7 @@ static int __init ip6_queue_init(void)
 cleanup_sysctl:
        unregister_sysctl_table(ipq_sysctl_header);
        unregister_netdevice_notifier(&ipq_dev_notifier);
-       proc_net_remove(IPQ_PROC_FS_NAME);
+       proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
 
 cleanup_ipqnl:
        sock_release(ipqnl->sk_socket);
@@ -715,7 +709,7 @@ static void __exit ip6_queue_fini(void)
 
        unregister_sysctl_table(ipq_sysctl_header);
        unregister_netdevice_notifier(&ipq_dev_notifier);
-       proc_net_remove(IPQ_PROC_FS_NAME);
+       proc_net_remove(&init_net, IPQ_PROC_FS_NAME);
 
        sock_release(ipqnl->sk_socket);
        mutex_lock(&ipqnl_mutex);