netns: ip6mr: enable namespace support in ipv6 multicast forwarding code
This last patch makes the appropriate changes to use and propagate the
network namespace where needed in IPv6 multicast forwarding code.
This consists mainly in replacing all the remaining init_net occurences
with current netns pointer retrieved from sockets, net devices or
mfc6_caches depending on the routines' contexts.
Some routines receive a new 'struct net' parameter to propagate the current
netns:
* ip6mr_get_route
* ip6mr_cache_report
* ip6mr_cache_find
* ip6mr_cache_unresolved
* mif6_add/mif6_delete
* ip6mr_mfc_add/ip6mr_mfc_delete
* ip6mr_reg_vif
All the IPv6 multicast forwarding variables moved to struct netns_ipv6 by
the previous patches are now referenced in the correct namespace.
Changelog:
==========
* Take into account the net associated to mfc6_cache when matching entries in
mfc_unres_queue list.
* Call mroute_clean_tables() in ip6mr_net_exit() to free memory allocated
per-namespace.
* Call dev_net_set() in ip6mr_reg_vif() to initialize dev->nd_net
correctly.
Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h
index 15d85fe..5375fac 100644
--- a/include/linux/mroute6.h
+++ b/include/linux/mroute6.h
@@ -245,7 +245,8 @@
#ifdef __KERNEL__
struct rtmsg;
-extern int ip6mr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait);
+extern int ip6mr_get_route(struct net *net, struct sk_buff *skb,
+ struct rtmsg *rtm, int nowait);
#ifdef CONFIG_IPV6_MROUTE
static inline struct sock *mroute6_socket(struct net *net)
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index d619faf..9eed242 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -77,8 +77,10 @@
static struct kmem_cache *mrt_cachep __read_mostly;
static int ip6_mr_forward(struct sk_buff *skb, struct mfc6_cache *cache);
-static int ip6mr_cache_report(struct sk_buff *pkt, mifi_t mifi, int assert);
+static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt,
+ mifi_t mifi, int assert);
static int ip6mr_fill_mroute(struct sk_buff *skb, struct mfc6_cache *c, struct rtmsg *rtm);
+static void mroute_clean_tables(struct net *net);
#ifdef CONFIG_IPV6_PIMSM_V2
static struct inet6_protocol pim6_protocol;
@@ -354,7 +356,8 @@
struct pimreghdr *pim;
struct ipv6hdr *encap;
struct net_device *reg_dev = NULL;
- int reg_vif_num = init_net.ipv6.mroute_reg_vif_num;
+ struct net *net = dev_net(skb->dev);
+ int reg_vif_num = net->ipv6.mroute_reg_vif_num;
if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap)))
goto drop;
@@ -377,7 +380,7 @@
read_lock(&mrt_lock);
if (reg_vif_num >= 0)
- reg_dev = init_net.ipv6.vif6_table[reg_vif_num].dev;
+ reg_dev = net->ipv6.vif6_table[reg_vif_num].dev;
if (reg_dev)
dev_hold(reg_dev);
read_unlock(&mrt_lock);
@@ -413,10 +416,13 @@
static int reg_vif_xmit(struct sk_buff *skb, struct net_device *dev)
{
+ struct net *net = dev_net(dev);
+
read_lock(&mrt_lock);
dev->stats.tx_bytes += skb->len;
dev->stats.tx_packets++;
- ip6mr_cache_report(skb, init_net.ipv6.mroute_reg_vif_num, MRT6MSG_WHOLEPKT);
+ ip6mr_cache_report(net, skb, net->ipv6.mroute_reg_vif_num,
+ MRT6MSG_WHOLEPKT);
read_unlock(&mrt_lock);
kfree_skb(skb);
return 0;
@@ -435,7 +441,7 @@
dev->destructor = free_netdev;
}
-static struct net_device *ip6mr_reg_vif(void)
+static struct net_device *ip6mr_reg_vif(struct net *net)
{
struct net_device *dev;
@@ -443,6 +449,8 @@
if (dev == NULL)
return NULL;
+ dev_net_set(dev, net);
+
if (register_netdevice(dev)) {
free_netdev(dev);
return NULL;
@@ -469,14 +477,14 @@
* Delete a VIF entry
*/
-static int mif6_delete(int vifi)
+static int mif6_delete(struct net *net, int vifi)
{
struct mif_device *v;
struct net_device *dev;
- if (vifi < 0 || vifi >= init_net.ipv6.maxvif)
+ if (vifi < 0 || vifi >= net->ipv6.maxvif)
return -EADDRNOTAVAIL;
- v = &init_net.ipv6.vif6_table[vifi];
+ v = &net->ipv6.vif6_table[vifi];
write_lock_bh(&mrt_lock);
dev = v->dev;
@@ -488,17 +496,17 @@
}
#ifdef CONFIG_IPV6_PIMSM_V2
- if (vifi == init_net.ipv6.mroute_reg_vif_num)
- init_net.ipv6.mroute_reg_vif_num = -1;
+ if (vifi == net->ipv6.mroute_reg_vif_num)
+ net->ipv6.mroute_reg_vif_num = -1;
#endif
- if (vifi + 1 == init_net.ipv6.maxvif) {
+ if (vifi + 1 == net->ipv6.maxvif) {
int tmp;
for (tmp = vifi - 1; tmp >= 0; tmp--) {
- if (MIF_EXISTS(&init_net, tmp))
+ if (MIF_EXISTS(net, tmp))
break;
}
- init_net.ipv6.maxvif = tmp + 1;
+ net->ipv6.maxvif = tmp + 1;
}
write_unlock_bh(&mrt_lock);
@@ -525,8 +533,9 @@
static void ip6mr_destroy_unres(struct mfc6_cache *c)
{
struct sk_buff *skb;
+ struct net *net = mfc6_net(c);
- atomic_dec(&init_net.ipv6.cache_resolve_queue_len);
+ atomic_dec(&net->ipv6.cache_resolve_queue_len);
while((skb = skb_dequeue(&c->mfc_un.unres.unresolved)) != NULL) {
if (ipv6_hdr(skb)->version == 0) {
@@ -535,7 +544,7 @@
nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr));
skb_trim(skb, nlh->nlmsg_len);
((struct nlmsgerr *)NLMSG_DATA(nlh))->error = -ETIMEDOUT;
- rtnl_unicast(skb, &init_net, NETLINK_CB(skb).pid);
+ rtnl_unicast(skb, net, NETLINK_CB(skb).pid);
} else
kfree_skb(skb);
}
@@ -590,13 +599,14 @@
static void ip6mr_update_thresholds(struct mfc6_cache *cache, unsigned char *ttls)
{
int vifi;
+ struct net *net = mfc6_net(cache);
cache->mfc_un.res.minvif = MAXMIFS;
cache->mfc_un.res.maxvif = 0;
memset(cache->mfc_un.res.ttls, 255, MAXMIFS);
- for (vifi = 0; vifi < init_net.ipv6.maxvif; vifi++) {
- if (MIF_EXISTS(&init_net, vifi) &&
+ for (vifi = 0; vifi < net->ipv6.maxvif; vifi++) {
+ if (MIF_EXISTS(net, vifi) &&
ttls[vifi] && ttls[vifi] < 255) {
cache->mfc_un.res.ttls[vifi] = ttls[vifi];
if (cache->mfc_un.res.minvif > vifi)
@@ -607,15 +617,15 @@
}
}
-static int mif6_add(struct mif6ctl *vifc, int mrtsock)
+static int mif6_add(struct net *net, struct mif6ctl *vifc, int mrtsock)
{
int vifi = vifc->mif6c_mifi;
- struct mif_device *v = &init_net.ipv6.vif6_table[vifi];
+ struct mif_device *v = &net->ipv6.vif6_table[vifi];
struct net_device *dev;
int err;
/* Is vif busy ? */
- if (MIF_EXISTS(&init_net, vifi))
+ if (MIF_EXISTS(net, vifi))
return -EADDRINUSE;
switch (vifc->mif6c_flags) {
@@ -625,9 +635,9 @@
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
- if (init_net.ipv6.mroute_reg_vif_num >= 0)
+ if (net->ipv6.mroute_reg_vif_num >= 0)
return -EADDRINUSE;
- dev = ip6mr_reg_vif();
+ dev = ip6mr_reg_vif(net);
if (!dev)
return -ENOBUFS;
err = dev_set_allmulti(dev, 1);
@@ -639,7 +649,7 @@
break;
#endif
case 0:
- dev = dev_get_by_index(&init_net, vifc->mif6c_pifi);
+ dev = dev_get_by_index(net, vifc->mif6c_pifi);
if (!dev)
return -EADDRNOTAVAIL;
err = dev_set_allmulti(dev, 1);
@@ -673,20 +683,22 @@
v->dev = dev;
#ifdef CONFIG_IPV6_PIMSM_V2
if (v->flags & MIFF_REGISTER)
- init_net.ipv6.mroute_reg_vif_num = vifi;
+ net->ipv6.mroute_reg_vif_num = vifi;
#endif
- if (vifi + 1 > init_net.ipv6.maxvif)
- init_net.ipv6.maxvif = vifi + 1;
+ if (vifi + 1 > net->ipv6.maxvif)
+ net->ipv6.maxvif = vifi + 1;
write_unlock_bh(&mrt_lock);
return 0;
}
-static struct mfc6_cache *ip6mr_cache_find(struct in6_addr *origin, struct in6_addr *mcastgrp)
+static struct mfc6_cache *ip6mr_cache_find(struct net *net,
+ struct in6_addr *origin,
+ struct in6_addr *mcastgrp)
{
int line = MFC6_HASH(mcastgrp, origin);
struct mfc6_cache *c;
- for (c = init_net.ipv6.mfc6_cache_array[line]; c; c = c->next) {
+ for (c = net->ipv6.mfc6_cache_array[line]; c; c = c->next) {
if (ipv6_addr_equal(&c->mf6c_origin, origin) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, mcastgrp))
break;
@@ -743,7 +755,7 @@
skb_trim(skb, nlh->nlmsg_len);
((struct nlmsgerr *)NLMSG_DATA(nlh))->error = -EMSGSIZE;
}
- err = rtnl_unicast(skb, &init_net, NETLINK_CB(skb).pid);
+ err = rtnl_unicast(skb, mfc6_net(uc), NETLINK_CB(skb).pid);
} else
ip6_mr_forward(skb, c);
}
@@ -756,7 +768,8 @@
* Called under mrt_lock.
*/
-static int ip6mr_cache_report(struct sk_buff *pkt, mifi_t mifi, int assert)
+static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt, mifi_t mifi,
+ int assert)
{
struct sk_buff *skb;
struct mrt6msg *msg;
@@ -792,7 +805,7 @@
msg = (struct mrt6msg *)skb_transport_header(skb);
msg->im6_mbz = 0;
msg->im6_msgtype = MRT6MSG_WHOLEPKT;
- msg->im6_mif = init_net.ipv6.mroute_reg_vif_num;
+ msg->im6_mif = net->ipv6.mroute_reg_vif_num;
msg->im6_pad = 0;
ipv6_addr_copy(&msg->im6_src, &ipv6_hdr(pkt)->saddr);
ipv6_addr_copy(&msg->im6_dst, &ipv6_hdr(pkt)->daddr);
@@ -829,7 +842,7 @@
skb_pull(skb, sizeof(struct ipv6hdr));
}
- if (init_net.ipv6.mroute6_sk == NULL) {
+ if (net->ipv6.mroute6_sk == NULL) {
kfree_skb(skb);
return -EINVAL;
}
@@ -837,7 +850,7 @@
/*
* Deliver to user space multicast routing algorithms
*/
- ret = sock_queue_rcv_skb(init_net.ipv6.mroute6_sk, skb);
+ ret = sock_queue_rcv_skb(net->ipv6.mroute6_sk, skb);
if (ret < 0) {
if (net_ratelimit())
printk(KERN_WARNING "mroute6: pending queue full, dropping entries.\n");
@@ -852,14 +865,14 @@
*/
static int
-ip6mr_cache_unresolved(mifi_t mifi, struct sk_buff *skb)
+ip6mr_cache_unresolved(struct net *net, mifi_t mifi, struct sk_buff *skb)
{
int err;
struct mfc6_cache *c;
spin_lock_bh(&mfc_unres_lock);
for (c = mfc_unres_queue; c; c = c->next) {
- if (net_eq(mfc6_net(c), &init_net) &&
+ if (net_eq(mfc6_net(c), net) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, &ipv6_hdr(skb)->daddr) &&
ipv6_addr_equal(&c->mf6c_origin, &ipv6_hdr(skb)->saddr))
break;
@@ -870,8 +883,8 @@
* Create a new entry if allowable
*/
- if (atomic_read(&init_net.ipv6.cache_resolve_queue_len) >= 10 ||
- (c = ip6mr_cache_alloc_unres(&init_net)) == NULL) {
+ if (atomic_read(&net->ipv6.cache_resolve_queue_len) >= 10 ||
+ (c = ip6mr_cache_alloc_unres(net)) == NULL) {
spin_unlock_bh(&mfc_unres_lock);
kfree_skb(skb);
@@ -888,7 +901,8 @@
/*
* Reflect first query at pim6sd
*/
- if ((err = ip6mr_cache_report(skb, mifi, MRT6MSG_NOCACHE)) < 0) {
+ err = ip6mr_cache_report(net, skb, mifi, MRT6MSG_NOCACHE);
+ if (err < 0) {
/* If the report failed throw the cache entry
out - Brad Parker
*/
@@ -899,7 +913,7 @@
return err;
}
- atomic_inc(&init_net.ipv6.cache_resolve_queue_len);
+ atomic_inc(&net->ipv6.cache_resolve_queue_len);
c->next = mfc_unres_queue;
mfc_unres_queue = c;
@@ -925,14 +939,14 @@
* MFC6 cache manipulation by user space
*/
-static int ip6mr_mfc_delete(struct mf6cctl *mfc)
+static int ip6mr_mfc_delete(struct net *net, struct mf6cctl *mfc)
{
int line;
struct mfc6_cache *c, **cp;
line = MFC6_HASH(&mfc->mf6cc_mcastgrp.sin6_addr, &mfc->mf6cc_origin.sin6_addr);
- for (cp = &init_net.ipv6.mfc6_cache_array[line];
+ for (cp = &net->ipv6.mfc6_cache_array[line];
(c = *cp) != NULL; cp = &c->next) {
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, &mfc->mf6cc_mcastgrp.sin6_addr)) {
@@ -951,19 +965,17 @@
unsigned long event, void *ptr)
{
struct net_device *dev = ptr;
+ struct net *net = dev_net(dev);
struct mif_device *v;
int ct;
- if (!net_eq(dev_net(dev), &init_net))
- return NOTIFY_DONE;
-
if (event != NETDEV_UNREGISTER)
return NOTIFY_DONE;
- v = &init_net.ipv6.vif6_table[0];
- for (ct = 0; ct < init_net.ipv6.maxvif; ct++, v++) {
+ v = &net->ipv6.vif6_table[0];
+ for (ct = 0; ct < net->ipv6.maxvif; ct++, v++) {
if (v->dev == dev)
- mif6_delete(ct);
+ mif6_delete(net, ct);
}
return NOTIFY_DONE;
}
@@ -1026,6 +1038,7 @@
proc_net_remove(net, "ip6_mr_cache");
proc_net_remove(net, "ip6_mr_vif");
#endif
+ mroute_clean_tables(net);
kfree(net->ipv6.mfc6_cache_array);
kfree(net->ipv6.vif6_table);
}
@@ -1071,7 +1084,7 @@
kmem_cache_destroy(mrt_cachep);
}
-static int ip6mr_mfc_add(struct mf6cctl *mfc, int mrtsock)
+static int ip6mr_mfc_add(struct net *net, struct mf6cctl *mfc, int mrtsock)
{
int line;
struct mfc6_cache *uc, *c, **cp;
@@ -1087,7 +1100,7 @@
line = MFC6_HASH(&mfc->mf6cc_mcastgrp.sin6_addr, &mfc->mf6cc_origin.sin6_addr);
- for (cp = &init_net.ipv6.mfc6_cache_array[line];
+ for (cp = &net->ipv6.mfc6_cache_array[line];
(c = *cp) != NULL; cp = &c->next) {
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, &mfc->mf6cc_mcastgrp.sin6_addr))
@@ -1107,7 +1120,7 @@
if (!ipv6_addr_is_multicast(&mfc->mf6cc_mcastgrp.sin6_addr))
return -EINVAL;
- c = ip6mr_cache_alloc(&init_net);
+ c = ip6mr_cache_alloc(net);
if (c == NULL)
return -ENOMEM;
@@ -1119,8 +1132,8 @@
c->mfc_flags |= MFC_STATIC;
write_lock_bh(&mrt_lock);
- c->next = init_net.ipv6.mfc6_cache_array[line];
- init_net.ipv6.mfc6_cache_array[line] = c;
+ c->next = net->ipv6.mfc6_cache_array[line];
+ net->ipv6.mfc6_cache_array[line] = c;
write_unlock_bh(&mrt_lock);
/*
@@ -1130,11 +1143,11 @@
spin_lock_bh(&mfc_unres_lock);
for (cp = &mfc_unres_queue; (uc = *cp) != NULL;
cp = &uc->next) {
- if (net_eq(mfc6_net(uc), &init_net) &&
+ if (net_eq(mfc6_net(uc), net) &&
ipv6_addr_equal(&uc->mf6c_origin, &c->mf6c_origin) &&
ipv6_addr_equal(&uc->mf6c_mcastgrp, &c->mf6c_mcastgrp)) {
*cp = uc->next;
- atomic_dec(&init_net.ipv6.cache_resolve_queue_len);
+ atomic_dec(&net->ipv6.cache_resolve_queue_len);
break;
}
}
@@ -1153,16 +1166,16 @@
* Close the multicast socket, and clear the vif tables etc
*/
-static void mroute_clean_tables(struct sock *sk)
+static void mroute_clean_tables(struct net *net)
{
int i;
/*
* Shut down all active vif entries
*/
- for (i = 0; i < init_net.ipv6.maxvif; i++) {
- if (!(init_net.ipv6.vif6_table[i].flags & VIFF_STATIC))
- mif6_delete(i);
+ for (i = 0; i < net->ipv6.maxvif; i++) {
+ if (!(net->ipv6.vif6_table[i].flags & VIFF_STATIC))
+ mif6_delete(net, i);
}
/*
@@ -1171,7 +1184,7 @@
for (i = 0; i < MFC6_LINES; i++) {
struct mfc6_cache *c, **cp;
- cp = &init_net.ipv6.mfc6_cache_array[i];
+ cp = &net->ipv6.mfc6_cache_array[i];
while ((c = *cp) != NULL) {
if (c->mfc_flags & MFC_STATIC) {
cp = &c->next;
@@ -1185,13 +1198,13 @@
}
}
- if (atomic_read(&init_net.ipv6.cache_resolve_queue_len) != 0) {
+ if (atomic_read(&net->ipv6.cache_resolve_queue_len) != 0) {
struct mfc6_cache *c, **cp;
spin_lock_bh(&mfc_unres_lock);
cp = &mfc_unres_queue;
while ((c = *cp) != NULL) {
- if (!net_eq(mfc6_net(c), &init_net)) {
+ if (!net_eq(mfc6_net(c), net)) {
cp = &c->next;
continue;
}
@@ -1205,11 +1218,12 @@
static int ip6mr_sk_init(struct sock *sk)
{
int err = 0;
+ struct net *net = sock_net(sk);
rtnl_lock();
write_lock_bh(&mrt_lock);
- if (likely(init_net.ipv6.mroute6_sk == NULL))
- init_net.ipv6.mroute6_sk = sk;
+ if (likely(net->ipv6.mroute6_sk == NULL))
+ net->ipv6.mroute6_sk = sk;
else
err = -EADDRINUSE;
write_unlock_bh(&mrt_lock);
@@ -1222,14 +1236,15 @@
int ip6mr_sk_done(struct sock *sk)
{
int err = 0;
+ struct net *net = sock_net(sk);
rtnl_lock();
- if (sk == init_net.ipv6.mroute6_sk) {
+ if (sk == net->ipv6.mroute6_sk) {
write_lock_bh(&mrt_lock);
- init_net.ipv6.mroute6_sk = NULL;
+ net->ipv6.mroute6_sk = NULL;
write_unlock_bh(&mrt_lock);
- mroute_clean_tables(sk);
+ mroute_clean_tables(net);
} else
err = -EACCES;
rtnl_unlock();
@@ -1250,9 +1265,10 @@
struct mif6ctl vif;
struct mf6cctl mfc;
mifi_t mifi;
+ struct net *net = sock_net(sk);
if (optname != MRT6_INIT) {
- if (sk != init_net.ipv6.mroute6_sk && !capable(CAP_NET_ADMIN))
+ if (sk != net->ipv6.mroute6_sk && !capable(CAP_NET_ADMIN))
return -EACCES;
}
@@ -1277,7 +1293,7 @@
if (vif.mif6c_mifi >= MAXMIFS)
return -ENFILE;
rtnl_lock();
- ret = mif6_add(&vif, sk == init_net.ipv6.mroute6_sk);
+ ret = mif6_add(net, &vif, sk == net->ipv6.mroute6_sk);
rtnl_unlock();
return ret;
@@ -1287,7 +1303,7 @@
if (copy_from_user(&mifi, optval, sizeof(mifi_t)))
return -EFAULT;
rtnl_lock();
- ret = mif6_delete(mifi);
+ ret = mif6_delete(net, mifi);
rtnl_unlock();
return ret;
@@ -1303,9 +1319,10 @@
return -EFAULT;
rtnl_lock();
if (optname == MRT6_DEL_MFC)
- ret = ip6mr_mfc_delete(&mfc);
+ ret = ip6mr_mfc_delete(net, &mfc);
else
- ret = ip6mr_mfc_add(&mfc, sk == init_net.ipv6.mroute6_sk);
+ ret = ip6mr_mfc_add(net, &mfc,
+ sk == net->ipv6.mroute6_sk);
rtnl_unlock();
return ret;
@@ -1317,7 +1334,7 @@
int v;
if (get_user(v, (int __user *)optval))
return -EFAULT;
- init_net.ipv6.mroute_do_assert = !!v;
+ net->ipv6.mroute_do_assert = !!v;
return 0;
}
@@ -1330,10 +1347,10 @@
v = !!v;
rtnl_lock();
ret = 0;
- if (v != init_net.ipv6.mroute_do_pim) {
- init_net.ipv6.mroute_do_pim = v;
- init_net.ipv6.mroute_do_assert = v;
- if (init_net.ipv6.mroute_do_pim)
+ if (v != net->ipv6.mroute_do_pim) {
+ net->ipv6.mroute_do_pim = v;
+ net->ipv6.mroute_do_assert = v;
+ if (net->ipv6.mroute_do_pim)
ret = inet6_add_protocol(&pim6_protocol,
IPPROTO_PIM);
else
@@ -1365,6 +1382,7 @@
{
int olr;
int val;
+ struct net *net = sock_net(sk);
switch (optname) {
case MRT6_VERSION:
@@ -1372,11 +1390,11 @@
break;
#ifdef CONFIG_IPV6_PIMSM_V2
case MRT6_PIM:
- val = init_net.ipv6.mroute_do_pim;
+ val = net->ipv6.mroute_do_pim;
break;
#endif
case MRT6_ASSERT:
- val = init_net.ipv6.mroute_do_assert;
+ val = net->ipv6.mroute_do_assert;
break;
default:
return -ENOPROTOOPT;
@@ -1406,16 +1424,17 @@
struct sioc_mif_req6 vr;
struct mif_device *vif;
struct mfc6_cache *c;
+ struct net *net = sock_net(sk);
switch (cmd) {
case SIOCGETMIFCNT_IN6:
if (copy_from_user(&vr, arg, sizeof(vr)))
return -EFAULT;
- if (vr.mifi >= init_net.ipv6.maxvif)
+ if (vr.mifi >= net->ipv6.maxvif)
return -EINVAL;
read_lock(&mrt_lock);
- vif = &init_net.ipv6.vif6_table[vr.mifi];
- if (MIF_EXISTS(&init_net, vr.mifi)) {
+ vif = &net->ipv6.vif6_table[vr.mifi];
+ if (MIF_EXISTS(net, vr.mifi)) {
vr.icount = vif->pkt_in;
vr.ocount = vif->pkt_out;
vr.ibytes = vif->bytes_in;
@@ -1433,7 +1452,7 @@
return -EFAULT;
read_lock(&mrt_lock);
- c = ip6mr_cache_find(&sr.src.sin6_addr, &sr.grp.sin6_addr);
+ c = ip6mr_cache_find(net, &sr.src.sin6_addr, &sr.grp.sin6_addr);
if (c) {
sr.pktcnt = c->mfc_un.res.pkt;
sr.bytecnt = c->mfc_un.res.bytes;
@@ -1466,7 +1485,8 @@
static int ip6mr_forward2(struct sk_buff *skb, struct mfc6_cache *c, int vifi)
{
struct ipv6hdr *ipv6h;
- struct mif_device *vif = &init_net.ipv6.vif6_table[vifi];
+ struct net *net = mfc6_net(c);
+ struct mif_device *vif = &net->ipv6.vif6_table[vifi];
struct net_device *dev;
struct dst_entry *dst;
struct flowi fl;
@@ -1480,7 +1500,7 @@
vif->bytes_out += skb->len;
vif->dev->stats.tx_bytes += skb->len;
vif->dev->stats.tx_packets++;
- ip6mr_cache_report(skb, vifi, MRT6MSG_WHOLEPKT);
+ ip6mr_cache_report(net, skb, vifi, MRT6MSG_WHOLEPKT);
kfree_skb(skb);
return 0;
}
@@ -1495,7 +1515,7 @@
}
};
- dst = ip6_route_output(&init_net, NULL, &fl);
+ dst = ip6_route_output(net, NULL, &fl);
if (!dst)
goto out_free;
@@ -1538,9 +1558,10 @@
static int ip6mr_find_vif(struct net_device *dev)
{
+ struct net *net = dev_net(dev);
int ct;
- for (ct = init_net.ipv6.maxvif - 1; ct >= 0; ct--) {
- if (init_net.ipv6.vif6_table[ct].dev == dev)
+ for (ct = net->ipv6.maxvif - 1; ct >= 0; ct--) {
+ if (net->ipv6.vif6_table[ct].dev == dev)
break;
}
return ct;
@@ -1550,6 +1571,7 @@
{
int psend = -1;
int vif, ct;
+ struct net *net = mfc6_net(cache);
vif = cache->mf6c_parent;
cache->mfc_un.res.pkt++;
@@ -1558,30 +1580,30 @@
/*
* Wrong interface: drop packet and (maybe) send PIM assert.
*/
- if (init_net.ipv6.vif6_table[vif].dev != skb->dev) {
+ if (net->ipv6.vif6_table[vif].dev != skb->dev) {
int true_vifi;
cache->mfc_un.res.wrong_if++;
true_vifi = ip6mr_find_vif(skb->dev);
- if (true_vifi >= 0 && init_net.ipv6.mroute_do_assert &&
+ if (true_vifi >= 0 && net->ipv6.mroute_do_assert &&
/* pimsm uses asserts, when switching from RPT to SPT,
so that we cannot check that packet arrived on an oif.
It is bad, but otherwise we would need to move pretty
large chunk of pimd to kernel. Ough... --ANK
*/
- (init_net.ipv6.mroute_do_pim ||
+ (net->ipv6.mroute_do_pim ||
cache->mfc_un.res.ttls[true_vifi] < 255) &&
time_after(jiffies,
cache->mfc_un.res.last_assert + MFC_ASSERT_THRESH)) {
cache->mfc_un.res.last_assert = jiffies;
- ip6mr_cache_report(skb, true_vifi, MRT6MSG_WRONGMIF);
+ ip6mr_cache_report(net, skb, true_vifi, MRT6MSG_WRONGMIF);
}
goto dont_forward;
}
- init_net.ipv6.vif6_table[vif].pkt_in++;
- init_net.ipv6.vif6_table[vif].bytes_in += skb->len;
+ net->ipv6.vif6_table[vif].pkt_in++;
+ net->ipv6.vif6_table[vif].bytes_in += skb->len;
/*
* Forward the frame
@@ -1614,9 +1636,11 @@
int ip6_mr_input(struct sk_buff *skb)
{
struct mfc6_cache *cache;
+ struct net *net = dev_net(skb->dev);
read_lock(&mrt_lock);
- cache = ip6mr_cache_find(&ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr);
+ cache = ip6mr_cache_find(net,
+ &ipv6_hdr(skb)->saddr, &ipv6_hdr(skb)->daddr);
/*
* No usable cache entry
@@ -1626,7 +1650,7 @@
vif = ip6mr_find_vif(skb->dev);
if (vif >= 0) {
- int err = ip6mr_cache_unresolved(vif, skb);
+ int err = ip6mr_cache_unresolved(net, vif, skb);
read_unlock(&mrt_lock);
return err;
@@ -1649,7 +1673,8 @@
{
int ct;
struct rtnexthop *nhp;
- struct net_device *dev = init_net.ipv6.vif6_table[c->mf6c_parent].dev;
+ struct net *net = mfc6_net(c);
+ struct net_device *dev = net->ipv6.vif6_table[c->mf6c_parent].dev;
u8 *b = skb_tail_pointer(skb);
struct rtattr *mp_head;
@@ -1665,7 +1690,7 @@
nhp = (struct rtnexthop *)skb_put(skb, RTA_ALIGN(sizeof(*nhp)));
nhp->rtnh_flags = 0;
nhp->rtnh_hops = c->mfc_un.res.ttls[ct];
- nhp->rtnh_ifindex = init_net.ipv6.vif6_table[ct].dev->ifindex;
+ nhp->rtnh_ifindex = net->ipv6.vif6_table[ct].dev->ifindex;
nhp->rtnh_len = sizeof(*nhp);
}
}
@@ -1679,14 +1704,15 @@
return -EMSGSIZE;
}
-int ip6mr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait)
+int ip6mr_get_route(struct net *net,
+ struct sk_buff *skb, struct rtmsg *rtm, int nowait)
{
int err;
struct mfc6_cache *cache;
struct rt6_info *rt = (struct rt6_info *)skb->dst;
read_lock(&mrt_lock);
- cache = ip6mr_cache_find(&rt->rt6i_src.addr, &rt->rt6i_dst.addr);
+ cache = ip6mr_cache_find(net, &rt->rt6i_src.addr, &rt->rt6i_dst.addr);
if (!cache) {
struct sk_buff *skb2;
@@ -1729,7 +1755,7 @@
ipv6_addr_copy(&iph->saddr, &rt->rt6i_src.addr);
ipv6_addr_copy(&iph->daddr, &rt->rt6i_dst.addr);
- err = ip6mr_cache_unresolved(vif, skb2);
+ err = ip6mr_cache_unresolved(net, vif, skb2);
read_unlock(&mrt_lock);
return err;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 9da1ece..18c486c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2194,7 +2194,7 @@
if (iif) {
#ifdef CONFIG_IPV6_MROUTE
if (ipv6_addr_is_multicast(&rt->rt6i_dst.addr)) {
- int err = ip6mr_get_route(skb, rtm, nowait);
+ int err = ip6mr_get_route(net, skb, rtm, nowait);
if (err <= 0) {
if (!nowait) {
if (err == 0)
