* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
- * Version: $Id: ipmr.c,v 1.65 2001/10/31 21:55:54 davem Exp $
- *
* Fixes:
* Michael Chastain : Incorrect size of copying.
* Alan Cox : Added the cache manager code
#include <linux/mroute.h>
#include <linux/init.h>
#include <linux/if_ether.h>
+#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/protocol.h>
#include <linux/skbuff.h>
/* Service routines creating virtual interfaces: DVMRP tunnels and PIMREG */
+static void ipmr_del_tunnel(struct net_device *dev, struct vifctl *v)
+{
+ dev_close(dev);
+
+ dev = __dev_get_by_name(&init_net, "tunl0");
+ if (dev) {
+ struct ifreq ifr;
+ mm_segment_t oldfs;
+ struct ip_tunnel_parm p;
+
+ memset(&p, 0, sizeof(p));
+ p.iph.daddr = v->vifc_rmt_addr.s_addr;
+ p.iph.saddr = v->vifc_lcl_addr.s_addr;
+ p.iph.version = 4;
+ p.iph.ihl = 5;
+ p.iph.protocol = IPPROTO_IPIP;
+ sprintf(p.name, "dvmrp%d", v->vifc_vifi);
+ ifr.ifr_ifru.ifru_data = (__force void __user *)&p;
+
+ oldfs = get_fs(); set_fs(KERNEL_DS);
+ dev->do_ioctl(dev, &ifr, SIOCDELTUNNEL);
+ set_fs(oldfs);
+ }
+}
+
static
struct net_device *ipmr_new_tunnel(struct vifctl *v)
{
struct net_device *dev;
- dev = __dev_get_by_name("tunl0");
+ dev = __dev_get_by_name(&init_net, "tunl0");
if (dev) {
int err;
p.iph.ihl = 5;
p.iph.protocol = IPPROTO_IPIP;
sprintf(p.name, "dvmrp%d", v->vifc_vifi);
- ifr.ifr_ifru.ifru_data = (void*)&p;
+ ifr.ifr_ifru.ifru_data = (__force void __user *)&p;
oldfs = get_fs(); set_fs(KERNEL_DS);
err = dev->do_ioctl(dev, &ifr, SIOCADDTUNNEL);
dev = NULL;
- if (err == 0 && (dev = __dev_get_by_name(p.name)) != NULL) {
+ if (err == 0 && (dev = __dev_get_by_name(&init_net, p.name)) != NULL) {
dev->flags |= IFF_MULTICAST;
in_dev = __in_dev_get_rtnl(dev);
- if (in_dev == NULL && (in_dev = inetdev_init(dev)) == NULL)
+ if (in_dev == NULL)
goto failure;
- IN_DEV_CONF_SET(in_dev, RP_FILTER, 0);
+
+ ipv4_devconf_setall(in_dev);
+ IPV4_DEVCONF(in_dev->cnf, RP_FILTER) = 0;
if (dev_open(dev))
goto failure;
+ dev_hold(dev);
}
}
return dev;
static int reg_vif_xmit(struct sk_buff *skb, struct net_device *dev)
{
read_lock(&mrt_lock);
- ((struct net_device_stats*)netdev_priv(dev))->tx_bytes += skb->len;
- ((struct net_device_stats*)netdev_priv(dev))->tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+ dev->stats.tx_packets++;
ipmr_cache_report(skb, reg_vif_num, IGMPMSG_WHOLEPKT);
read_unlock(&mrt_lock);
kfree_skb(skb);
return 0;
}
-static struct net_device_stats *reg_vif_get_stats(struct net_device *dev)
-{
- return (struct net_device_stats*)netdev_priv(dev);
-}
-
static void reg_vif_setup(struct net_device *dev)
{
dev->type = ARPHRD_PIMREG;
dev->mtu = ETH_DATA_LEN - sizeof(struct iphdr) - 8;
dev->flags = IFF_NOARP;
dev->hard_start_xmit = reg_vif_xmit;
- dev->get_stats = reg_vif_get_stats;
dev->destructor = free_netdev;
}
struct net_device *dev;
struct in_device *in_dev;
- dev = alloc_netdev(sizeof(struct net_device_stats), "pimreg",
- reg_vif_setup);
+ dev = alloc_netdev(0, "pimreg", reg_vif_setup);
if (dev == NULL)
return NULL;
}
dev->iflink = 0;
- if ((in_dev = inetdev_init(dev)) == NULL)
+ rcu_read_lock();
+ if ((in_dev = __in_dev_get_rcu(dev)) == NULL) {
+ rcu_read_unlock();
goto failure;
+ }
- IN_DEV_CONF_SET(in_dev, RP_FILTER, 0);
+ ipv4_devconf_setall(in_dev);
+ IPV4_DEVCONF(in_dev->cnf, RP_FILTER) = 0;
+ rcu_read_unlock();
if (dev_open(dev))
goto failure;
+ dev_hold(dev);
+
return dev;
failure:
/*
* Delete a VIF entry
+ * @notify: Set to 1, if the caller is a notifier_call
*/
-static int vif_delete(int vifi)
+static int vif_delete(int vifi, int notify)
{
struct vif_device *v;
struct net_device *dev;
ip_rt_multicast_event(in_dev);
}
- if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER))
+ if (v->flags&(VIFF_TUNNEL|VIFF_REGISTER) && !notify)
unregister_netdevice(dev);
dev_put(dev);
e->error = -ETIMEDOUT;
memset(&e->msg, 0, sizeof(e->msg));
- rtnl_unicast(skb, NETLINK_CB(skb).pid);
+ rtnl_unicast(skb, &init_net, NETLINK_CB(skb).pid);
} else
kfree_skb(skb);
}
struct vif_device *v = &vif_table[vifi];
struct net_device *dev;
struct in_device *in_dev;
+ int err;
/* Is vif busy ? */
if (VIF_EXISTS(vifi))
dev = ipmr_reg_vif();
if (!dev)
return -ENOBUFS;
+ err = dev_set_allmulti(dev, 1);
+ if (err) {
+ unregister_netdevice(dev);
+ dev_put(dev);
+ return err;
+ }
break;
#endif
case VIFF_TUNNEL:
dev = ipmr_new_tunnel(vifc);
if (!dev)
return -ENOBUFS;
+ err = dev_set_allmulti(dev, 1);
+ if (err) {
+ ipmr_del_tunnel(dev, vifc);
+ dev_put(dev);
+ return err;
+ }
break;
case 0:
- dev = ip_dev_find(vifc->vifc_lcl_addr.s_addr);
+ dev = ip_dev_find(&init_net, vifc->vifc_lcl_addr.s_addr);
if (!dev)
return -EADDRNOTAVAIL;
- dev_put(dev);
+ err = dev_set_allmulti(dev, 1);
+ if (err) {
+ dev_put(dev);
+ return err;
+ }
break;
default:
return -EINVAL;
if ((in_dev = __in_dev_get_rtnl(dev)) == NULL)
return -EADDRNOTAVAIL;
IPV4_DEVCONF(in_dev->cnf, MC_FORWARDING)++;
- dev_set_allmulti(dev, +1);
ip_rt_multicast_event(in_dev);
/*
/* And finish update writing critical data */
write_lock_bh(&mrt_lock);
- dev_hold(dev);
v->dev=dev;
#ifdef CONFIG_IP_PIMSM
if (v->flags&VIFF_REGISTER)
memset(&e->msg, 0, sizeof(e->msg));
}
- rtnl_unicast(skb, NETLINK_CB(skb).pid);
+ rtnl_unicast(skb, &init_net, NETLINK_CB(skb).pid);
} else
ip_mr_forward(skb, c, 0);
}
return 0;
}
- if (!MULTICAST(mfc->mfcc_mcastgrp.s_addr))
+ if (!ipv4_is_multicast(mfc->mfcc_mcastgrp.s_addr))
return -EINVAL;
c=ipmr_cache_alloc();
*/
for (i=0; i<maxvif; i++) {
if (!(vif_table[i].flags&VIFF_STATIC))
- vif_delete(i);
+ vif_delete(i, 0);
}
/*
{
rtnl_lock();
if (sk == mroute_socket) {
- IPV4_DEVCONF_ALL(MC_FORWARDING)--;
+ IPV4_DEVCONF_ALL(sock_net(sk), MC_FORWARDING)--;
write_lock_bh(&mrt_lock);
mroute_socket=NULL;
mroute_socket=sk;
write_unlock_bh(&mrt_lock);
- IPV4_DEVCONF_ALL(MC_FORWARDING)++;
+ IPV4_DEVCONF_ALL(sock_net(sk), MC_FORWARDING)++;
}
rtnl_unlock();
return ret;
if (optname==MRT_ADD_VIF) {
ret = vif_add(&vif, sk==mroute_socket);
} else {
- ret = vif_delete(vif.vifc_vifi);
+ ret = vif_delete(vif.vifc_vifi, 0);
}
rtnl_unlock();
return ret;
#ifdef CONFIG_IP_PIMSM
case MRT_PIM:
{
- int v, ret;
+ int v;
+
if (get_user(v,(int __user *)optval))
return -EFAULT;
- v = (v)?1:0;
+ v = (v) ? 1 : 0;
+
rtnl_lock();
ret = 0;
if (v != mroute_do_pim) {
static int ipmr_device_event(struct notifier_block *this, unsigned long event, void *ptr)
{
+ struct net_device *dev = ptr;
struct vif_device *v;
int ct;
+
+ if (!net_eq(dev_net(dev), &init_net))
+ return NOTIFY_DONE;
+
if (event != NETDEV_UNREGISTER)
return NOTIFY_DONE;
v=&vif_table[0];
for (ct=0;ct<maxvif;ct++,v++) {
- if (v->dev==ptr)
- vif_delete(ct);
+ if (v->dev==dev)
+ vif_delete(ct, 1);
}
return NOTIFY_DONE;
}
{
struct ip_options * opt = &(IPCB(skb)->opt);
- IP_INC_STATS_BH(IPSTATS_MIB_OUTFORWDATAGRAMS);
+ IP_INC_STATS_BH(dev_net(skb->dst->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
if (unlikely(opt->optlen))
ip_forward_options(skb);
if (vif->flags & VIFF_REGISTER) {
vif->pkt_out++;
vif->bytes_out+=skb->len;
- ((struct net_device_stats*)netdev_priv(vif->dev))->tx_bytes += skb->len;
- ((struct net_device_stats*)netdev_priv(vif->dev))->tx_packets++;
+ vif->dev->stats.tx_bytes += skb->len;
+ vif->dev->stats.tx_packets++;
ipmr_cache_report(skb, vifi, IGMPMSG_WHOLEPKT);
kfree_skb(skb);
return;
.saddr = vif->local,
.tos = RT_TOS(iph->tos) } },
.proto = IPPROTO_IPIP };
- if (ip_route_output_key(&rt, &fl))
+ if (ip_route_output_key(&init_net, &rt, &fl))
goto out_free;
encap = sizeof(struct iphdr);
} else {
{ .daddr = iph->daddr,
.tos = RT_TOS(iph->tos) } },
.proto = IPPROTO_IPIP };
- if (ip_route_output_key(&rt, &fl))
+ if (ip_route_output_key(&init_net, &rt, &fl))
goto out_free;
}
to blackhole.
*/
- IP_INC_STATS_BH(IPSTATS_MIB_FRAGFAILS);
+ IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
ip_rt_put(rt);
goto out_free;
}
if (vif->flags & VIFF_TUNNEL) {
ip_encap(skb, vif->local, vif->remote);
/* FIXME: extra output firewall step used to be here. --RR */
- ((struct ip_tunnel *)netdev_priv(vif->dev))->stat.tx_packets++;
- ((struct ip_tunnel *)netdev_priv(vif->dev))->stat.tx_bytes+=skb->len;
+ vif->dev->stats.tx_packets++;
+ vif->dev->stats.tx_bytes += skb->len;
}
IPCB(skb)->flags |= IPSKB_FORWARDED;
* not mrouter) cannot join to more than one interface - it will
* result in receiving multiple packets.
*/
- NF_HOOK(PF_INET, NF_IP_FORWARD, skb, skb->dev, dev,
+ NF_HOOK(PF_INET, NF_INET_FORWARD, skb, skb->dev, dev,
ipmr_forward_finish);
return;
if (vif_table[vif].dev != skb->dev) {
int true_vifi;
- if (((struct rtable*)skb->dst)->fl.iif == 0) {
+ if (skb->rtable->fl.iif == 0) {
/* It is our own packet, looped back.
Very complicated situation...
int ip_mr_input(struct sk_buff *skb)
{
struct mfc_cache *cache;
- int local = ((struct rtable*)skb->dst)->rt_flags&RTCF_LOCAL;
+ int local = skb->rtable->rt_flags&RTCF_LOCAL;
/* Packet is looped back after forward, it should not be
forwarded second time, but still can be delivered locally.
b. packet is not a NULL-REGISTER
c. packet is not truncated
*/
- if (!MULTICAST(encap->daddr) ||
+ if (!ipv4_is_multicast(encap->daddr) ||
encap->tot_len == 0 ||
ntohs(encap->tot_len) + sizeof(*pim) > skb->len)
goto drop;
skb->pkt_type = PACKET_HOST;
dst_release(skb->dst);
skb->dst = NULL;
- ((struct net_device_stats*)netdev_priv(reg_dev))->rx_bytes += skb->len;
- ((struct net_device_stats*)netdev_priv(reg_dev))->rx_packets++;
+ reg_dev->stats.rx_bytes += skb->len;
+ reg_dev->stats.rx_packets++;
nf_reset(skb);
netif_rx(skb);
dev_put(reg_dev);
/* check if the inner packet is destined to mcast group */
encap = (struct iphdr *)(skb_transport_header(skb) +
sizeof(struct pimreghdr));
- if (!MULTICAST(encap->daddr) ||
+ if (!ipv4_is_multicast(encap->daddr) ||
encap->tot_len == 0 ||
ntohs(encap->tot_len) + sizeof(*pim) > skb->len)
goto drop;
skb->ip_summed = 0;
skb->pkt_type = PACKET_HOST;
dst_release(skb->dst);
- ((struct net_device_stats*)netdev_priv(reg_dev))->rx_bytes += skb->len;
- ((struct net_device_stats*)netdev_priv(reg_dev))->rx_packets++;
+ reg_dev->stats.rx_bytes += skb->len;
+ reg_dev->stats.rx_packets++;
skb->dst = NULL;
nf_reset(skb);
netif_rx(skb);
{
int err;
struct mfc_cache *cache;
- struct rtable *rt = (struct rtable*)skb->dst;
+ struct rtable *rt = skb->rtable;
read_lock(&mrt_lock);
cache = ipmr_cache_find(rt->rt_src, rt->rt_dst);
}
static void *ipmr_vif_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(mrt_lock)
{
read_lock(&mrt_lock);
return *pos ? ipmr_vif_seq_idx(seq->private, *pos - 1)
}
static void ipmr_vif_seq_stop(struct seq_file *seq, void *v)
+ __releases(mrt_lock)
{
read_unlock(&mrt_lock);
}
static int ipmr_vif_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct ipmr_vif_iter *s = kmalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
-
- rc = seq_open(file, &ipmr_vif_seq_ops);
- if (rc)
- goto out_kfree;
-
- s->ct = 0;
- seq = file->private_data;
- seq->private = s;
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
-
+ return seq_open_private(file, &ipmr_vif_seq_ops,
+ sizeof(struct ipmr_vif_iter));
}
static const struct file_operations ipmr_vif_fops = {
static int ipmr_mfc_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct ipmr_mfc_iter *s = kmalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
-
- rc = seq_open(file, &ipmr_mfc_seq_ops);
- if (rc)
- goto out_kfree;
-
- seq = file->private_data;
- seq->private = s;
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
-
+ return seq_open_private(file, &ipmr_mfc_seq_ops,
+ sizeof(struct ipmr_mfc_iter));
}
static const struct file_operations ipmr_mfc_fops = {
* Setup for IP multicast routing
*/
-void __init ip_mr_init(void)
+int __init ip_mr_init(void)
{
+ int err;
+
mrt_cachep = kmem_cache_create("ip_mrt_cache",
sizeof(struct mfc_cache),
0, SLAB_HWCACHE_ALIGN|SLAB_PANIC,
- NULL, NULL);
- init_timer(&ipmr_expire_timer);
- ipmr_expire_timer.function=ipmr_expire_process;
- register_netdevice_notifier(&ip_mr_notifier);
+ NULL);
+ if (!mrt_cachep)
+ return -ENOMEM;
+
+ setup_timer(&ipmr_expire_timer, ipmr_expire_process, 0);
+ err = register_netdevice_notifier(&ip_mr_notifier);
+ if (err)
+ goto reg_notif_fail;
#ifdef CONFIG_PROC_FS
- proc_net_fops_create("ip_mr_vif", 0, &ipmr_vif_fops);
- proc_net_fops_create("ip_mr_cache", 0, &ipmr_mfc_fops);
+ 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;
+reg_notif_fail:
+ kmem_cache_destroy(mrt_cachep);
+#ifdef CONFIG_PROC_FS
+proc_vif_fail:
+ unregister_netdevice_notifier(&ip_mr_notifier);
+proc_cache_fail:
+ proc_net_remove(&init_net, "ip_mr_vif");
+#endif
+ return err;
}
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