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authorPatrick McHardy <kaber@trash.net>2010-05-11 14:40:53 +0200
committerPatrick McHardy <kaber@trash.net>2010-05-11 14:40:53 +0200
commit6bd521433942d85e80f7a731a88cc91a327f38e0 (patch)
treee263e39fc6096ef77e2a1c22d5972447785b2aa5
parentf30a77842129b5656360cc1f5db48a3fcfb64528 (diff)
ipv6: ip6mr: move mroute data into seperate structure
Signed-off-by: Patrick McHardy <kaber@trash.net>
-rw-r--r--include/linux/mroute6.h5
-rw-r--r--include/net/netns/ipv6.h13
-rw-r--r--net/ipv6/ip6mr.c390
3 files changed, 216 insertions, 192 deletions
diff --git a/include/linux/mroute6.h b/include/linux/mroute6.h
index 94a0cb521ca..0370dd4f238 100644
--- a/include/linux/mroute6.h
+++ b/include/linux/mroute6.h
@@ -229,10 +229,7 @@ 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)
-{
- return net->ipv6.mroute6_sk;
-}
+extern struct sock *mroute6_socket(struct net *net);
extern int ip6mr_sk_done(struct sock *sk);
#else
static inline struct sock *mroute6_socket(struct net *net) { return NULL; }
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index 9cb3b5f2cd7..4e2780e6d8b 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -59,18 +59,7 @@ struct netns_ipv6 {
struct sock *tcp_sk;
struct sock *igmp_sk;
#ifdef CONFIG_IPV6_MROUTE
- struct sock *mroute6_sk;
- struct timer_list ipmr_expire_timer;
- struct list_head mfc6_unres_queue;
- struct list_head *mfc6_cache_array;
- struct mif_device *vif6_table;
- int maxvif;
- atomic_t cache_resolve_queue_len;
- int mroute_do_assert;
- int mroute_do_pim;
-#ifdef CONFIG_IPV6_PIMSM_V2
- int mroute_reg_vif_num;
-#endif
+ struct mr6_table *mrt6;
#endif
};
#endif
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 08e09042ad1..9419fceeed4 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -51,6 +51,24 @@
#include <linux/netfilter_ipv6.h>
#include <net/ip6_checksum.h>
+struct mr6_table {
+#ifdef CONFIG_NET_NS
+ struct net *net;
+#endif
+ struct sock *mroute6_sk;
+ struct timer_list ipmr_expire_timer;
+ struct list_head mfc6_unres_queue;
+ struct list_head mfc6_cache_array[MFC6_LINES];
+ struct mif_device vif6_table[MAXMIFS];
+ int maxvif;
+ atomic_t cache_resolve_queue_len;
+ int mroute_do_assert;
+ int mroute_do_pim;
+#ifdef CONFIG_IPV6_PIMSM_V2
+ int mroute_reg_vif_num;
+#endif
+};
+
/* Big lock, protecting vif table, mrt cache and mroute socket state.
Note that the changes are semaphored via rtnl_lock.
*/
@@ -61,7 +79,7 @@ static DEFINE_RWLOCK(mrt_lock);
* Multicast router control variables
*/
-#define MIF_EXISTS(_net, _idx) ((_net)->ipv6.vif6_table[_idx].dev != NULL)
+#define MIF_EXISTS(_mrt, _idx) ((_mrt)->vif6_table[_idx].dev != NULL)
/* Special spinlock for queue of unresolved entries */
static DEFINE_SPINLOCK(mfc_unres_lock);
@@ -76,13 +94,13 @@ static DEFINE_SPINLOCK(mfc_unres_lock);
static struct kmem_cache *mrt_cachep __read_mostly;
-static int ip6_mr_forward(struct net *net, struct sk_buff *skb,
- struct mfc6_cache *cache);
-static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt,
+static int ip6_mr_forward(struct net *net, struct mr6_table *mrt,
+ struct sk_buff *skb, struct mfc6_cache *cache);
+static int ip6mr_cache_report(struct mr6_table *mrt, struct sk_buff *pkt,
mifi_t mifi, int assert);
-static int ip6mr_fill_mroute(struct net *net, struct sk_buff *skb,
+static int ip6mr_fill_mroute(struct mr6_table *mrt, struct sk_buff *skb,
struct mfc6_cache *c, struct rtmsg *rtm);
-static void mroute_clean_tables(struct net *net);
+static void mroute_clean_tables(struct mr6_table *mrt);
#ifdef CONFIG_PROC_FS
@@ -97,11 +115,12 @@ struct ipmr_mfc_iter {
static struct mfc6_cache *ipmr_mfc_seq_idx(struct net *net,
struct ipmr_mfc_iter *it, loff_t pos)
{
+ struct mr6_table *mrt = net->ipv6.mrt6;
struct mfc6_cache *mfc;
read_lock(&mrt_lock);
for (it->ct = 0; it->ct < MFC6_LINES; it->ct++) {
- it->cache = &net->ipv6.mfc6_cache_array[it->ct];
+ it->cache = &mrt->mfc6_cache_array[it->ct];
list_for_each_entry(mfc, it->cache, list)
if (pos-- == 0)
return mfc;
@@ -109,7 +128,7 @@ static struct mfc6_cache *ipmr_mfc_seq_idx(struct net *net,
read_unlock(&mrt_lock);
spin_lock_bh(&mfc_unres_lock);
- it->cache = &net->ipv6.mfc6_unres_queue;
+ it->cache = &mrt->mfc6_unres_queue;
list_for_each_entry(mfc, it->cache, list)
if (pos-- == 0)
return mfc;
@@ -132,11 +151,13 @@ static struct mif_device *ip6mr_vif_seq_idx(struct net *net,
struct ipmr_vif_iter *iter,
loff_t pos)
{
- for (iter->ct = 0; iter->ct < net->ipv6.maxvif; ++iter->ct) {
- if (!MIF_EXISTS(net, iter->ct))
+ struct mr6_table *mrt = net->ipv6.mrt6;
+
+ for (iter->ct = 0; iter->ct < mrt->maxvif; ++iter->ct) {
+ if (!MIF_EXISTS(mrt, iter->ct))
continue;
if (pos-- == 0)
- return &net->ipv6.vif6_table[iter->ct];
+ return &mrt->vif6_table[iter->ct];
}
return NULL;
}
@@ -155,15 +176,16 @@ static void *ip6mr_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);
+ struct mr6_table *mrt = net->ipv6.mrt6;
++*pos;
if (v == SEQ_START_TOKEN)
return ip6mr_vif_seq_idx(net, iter, 0);
- while (++iter->ct < net->ipv6.maxvif) {
- if (!MIF_EXISTS(net, iter->ct))
+ while (++iter->ct < mrt->maxvif) {
+ if (!MIF_EXISTS(mrt, iter->ct))
continue;
- return &net->ipv6.vif6_table[iter->ct];
+ return &mrt->vif6_table[iter->ct];
}
return NULL;
}
@@ -177,6 +199,7 @@ static void ip6mr_vif_seq_stop(struct seq_file *seq, void *v)
static int ip6mr_vif_seq_show(struct seq_file *seq, void *v)
{
struct net *net = seq_file_net(seq);
+ struct mr6_table *mrt = net->ipv6.mrt6;
if (v == SEQ_START_TOKEN) {
seq_puts(seq,
@@ -187,7 +210,7 @@ static int ip6mr_vif_seq_show(struct seq_file *seq, void *v)
seq_printf(seq,
"%2td %-10s %8ld %7ld %8ld %7ld %05X\n",
- vif - net->ipv6.vif6_table,
+ vif - mrt->vif6_table,
name, vif->bytes_in, vif->pkt_in,
vif->bytes_out, vif->pkt_out,
vif->flags);
@@ -229,6 +252,7 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
struct mfc6_cache *mfc = v;
struct ipmr_mfc_iter *it = seq->private;
struct net *net = seq_file_net(seq);
+ struct mr6_table *mrt = net->ipv6.mrt6;
++*pos;
@@ -238,13 +262,13 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
if (mfc->list.next != it->cache)
return list_entry(mfc->list.next, struct mfc6_cache, list);
- if (it->cache == &net->ipv6.mfc6_unres_queue)
+ if (it->cache == &mrt->mfc6_unres_queue)
goto end_of_list;
- BUG_ON(it->cache != &net->ipv6.mfc6_cache_array[it->ct]);
+ BUG_ON(it->cache != &mrt->mfc6_cache_array[it->ct]);
while (++it->ct < MFC6_LINES) {
- it->cache = &net->ipv6.mfc6_cache_array[it->ct];
+ it->cache = &mrt->mfc6_cache_array[it->ct];
if (list_empty(it->cache))
continue;
return list_first_entry(it->cache, struct mfc6_cache, list);
@@ -252,7 +276,7 @@ static void *ipmr_mfc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
/* exhausted cache_array, show unresolved */
read_unlock(&mrt_lock);
- it->cache = &net->ipv6.mfc6_unres_queue;
+ it->cache = &mrt->mfc6_unres_queue;
it->ct = 0;
spin_lock_bh(&mfc_unres_lock);
@@ -270,10 +294,11 @@ 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);
+ struct mr6_table *mrt = net->ipv6.mrt6;
- if (it->cache == &net->ipv6.mfc6_unres_queue)
+ if (it->cache == &mrt->mfc6_unres_queue)
spin_unlock_bh(&mfc_unres_lock);
- else if (it->cache == net->ipv6.mfc6_cache_array)
+ else if (it->cache == mrt->mfc6_cache_array)
read_unlock(&mrt_lock);
}
@@ -281,6 +306,7 @@ static int ipmr_mfc_seq_show(struct seq_file *seq, void *v)
{
int n;
struct net *net = seq_file_net(seq);
+ struct mr6_table *mrt = net->ipv6.mrt6;
if (v == SEQ_START_TOKEN) {
seq_puts(seq,
@@ -295,14 +321,14 @@ static int ipmr_mfc_seq_show(struct seq_file *seq, void *v)
&mfc->mf6c_mcastgrp, &mfc->mf6c_origin,
mfc->mf6c_parent);
- if (it->cache != &net->ipv6.mfc6_unres_queue) {
+ if (it->cache != &mrt->mfc6_unres_queue) {
seq_printf(seq, " %8lu %8lu %8lu",
mfc->mfc_un.res.pkt,
mfc->mfc_un.res.bytes,
mfc->mfc_un.res.wrong_if);
for (n = mfc->mfc_un.res.minvif;
n < mfc->mfc_un.res.maxvif; n++) {
- if (MIF_EXISTS(net, n) &&
+ if (MIF_EXISTS(mrt, n) &&
mfc->mfc_un.res.ttls[n] < 255)
seq_printf(seq,
" %2d:%-3d",
@@ -349,7 +375,8 @@ static int pim6_rcv(struct sk_buff *skb)
struct ipv6hdr *encap;
struct net_device *reg_dev = NULL;
struct net *net = dev_net(skb->dev);
- int reg_vif_num = net->ipv6.mroute_reg_vif_num;
+ struct mr6_table *mrt = net->ipv6.mrt6;
+ int reg_vif_num = mrt->mroute_reg_vif_num;
if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap)))
goto drop;
@@ -374,7 +401,7 @@ static int pim6_rcv(struct sk_buff *skb)
read_lock(&mrt_lock);
if (reg_vif_num >= 0)
- reg_dev = net->ipv6.vif6_table[reg_vif_num].dev;
+ reg_dev = mrt->vif6_table[reg_vif_num].dev;
if (reg_dev)
dev_hold(reg_dev);
read_unlock(&mrt_lock);
@@ -411,12 +438,12 @@ static netdev_tx_t reg_vif_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct net *net = dev_net(dev);
+ struct mr6_table *mrt = net->ipv6.mrt6;
read_lock(&mrt_lock);
dev->stats.tx_bytes += skb->len;
dev->stats.tx_packets++;
- ip6mr_cache_report(net, skb, net->ipv6.mroute_reg_vif_num,
- MRT6MSG_WHOLEPKT);
+ ip6mr_cache_report(mrt, skb, mrt->mroute_reg_vif_num, MRT6MSG_WHOLEPKT);
read_unlock(&mrt_lock);
kfree_skb(skb);
return NETDEV_TX_OK;
@@ -472,15 +499,16 @@ failure:
* Delete a VIF entry
*/
-static int mif6_delete(struct net *net, int vifi, struct list_head *head)
+static int mif6_delete(struct mr6_table *mrt, int vifi, struct list_head *head)
{
struct mif_device *v;
struct net_device *dev;
struct inet6_dev *in6_dev;
- if (vifi < 0 || vifi >= net->ipv6.maxvif)
+
+ if (vifi < 0 || vifi >= mrt->maxvif)
return -EADDRNOTAVAIL;
- v = &net->ipv6.vif6_table[vifi];
+ v = &mrt->vif6_table[vifi];
write_lock_bh(&mrt_lock);
dev = v->dev;
@@ -492,17 +520,17 @@ static int mif6_delete(struct net *net, int vifi, struct list_head *head)
}
#ifdef CONFIG_IPV6_PIMSM_V2
- if (vifi == net->ipv6.mroute_reg_vif_num)
- net->ipv6.mroute_reg_vif_num = -1;
+ if (vifi == mrt->mroute_reg_vif_num)
+ mrt->mroute_reg_vif_num = -1;
#endif
- if (vifi + 1 == net->ipv6.maxvif) {
+ if (vifi + 1 == mrt->maxvif) {
int tmp;
for (tmp = vifi - 1; tmp >= 0; tmp--) {
- if (MIF_EXISTS(net, tmp))
+ if (MIF_EXISTS(mrt, tmp))
break;
}
- net->ipv6.maxvif = tmp + 1;
+ mrt->maxvif = tmp + 1;
}
write_unlock_bh(&mrt_lock);
@@ -529,11 +557,12 @@ static inline void ip6mr_cache_free(struct mfc6_cache *c)
and reporting error to netlink readers.
*/
-static void ip6mr_destroy_unres(struct net *net, struct mfc6_cache *c)
+static void ip6mr_destroy_unres(struct mr6_table *mrt, struct mfc6_cache *c)
{
+ struct net *net = read_pnet(&mrt->net);
struct sk_buff *skb;
- atomic_dec(&net->ipv6.cache_resolve_queue_len);
+ atomic_dec(&mrt->cache_resolve_queue_len);
while((skb = skb_dequeue(&c->mfc_un.unres.unresolved)) != NULL) {
if (ipv6_hdr(skb)->version == 0) {
@@ -553,13 +582,13 @@ static void ip6mr_destroy_unres(struct net *net, struct mfc6_cache *c)
/* Timer process for all the unresolved queue. */
-static void ipmr_do_expire_process(struct net *net)
+static void ipmr_do_expire_process(struct mr6_table *mrt)
{
unsigned long now = jiffies;
unsigned long expires = 10 * HZ;
struct mfc6_cache *c, *next;
- list_for_each_entry_safe(c, next, &net->ipv6.mfc6_unres_queue, list) {
+ list_for_each_entry_safe(c, next, &mrt->mfc6_unres_queue, list) {
if (time_after(c->mfc_un.unres.expires, now)) {
/* not yet... */
unsigned long interval = c->mfc_un.unres.expires - now;
@@ -569,31 +598,31 @@ static void ipmr_do_expire_process(struct net *net)
}
list_del(&c->list);
- ip6mr_destroy_unres(net, c);
+ ip6mr_destroy_unres(mrt, c);
}
- if (!list_empty(&net->ipv6.mfc6_unres_queue))
- mod_timer(&net->ipv6.ipmr_expire_timer, jiffies + expires);
+ if (!list_empty(&mrt->mfc6_unres_queue))
+ mod_timer(&mrt->ipmr_expire_timer, jiffies + expires);
}
static void ipmr_expire_process(unsigned long arg)
{
- struct net *net = (struct net *)arg;
+ struct mr6_table *mrt = (struct mr6_table *)arg;
if (!spin_trylock(&mfc_unres_lock)) {
- mod_timer(&net->ipv6.ipmr_expire_timer, jiffies + 1);
+ mod_timer(&mrt->ipmr_expire_timer, jiffies + 1);
return;
}
- if (!list_empty(&net->ipv6.mfc6_unres_queue))
- ipmr_do_expire_process(net);
+ if (!list_empty(&mrt->mfc6_unres_queue))
+ ipmr_do_expire_process(mrt);
spin_unlock(&mfc_unres_lock);
}
/* Fill oifs list. It is called under write locked mrt_lock. */
-static void ip6mr_update_thresholds(struct net *net, struct mfc6_cache *cache,
+static void ip6mr_update_thresholds(struct mr6_table *mrt, struct mfc6_cache *cache,
unsigned char *ttls)
{
int vifi;
@@ -602,8 +631,8 @@ static void ip6mr_update_thresholds(struct net *net, struct mfc6_cache *cache,
cache->mfc_un.res.maxvif = 0;
memset(cache->mfc_un.res.ttls, 255, MAXMIFS);
- for (vifi = 0; vifi < net->ipv6.maxvif; vifi++) {
- if (MIF_EXISTS(net, vifi) &&
+ for (vifi = 0; vifi < mrt->maxvif; vifi++) {
+ if (MIF_EXISTS(mrt, vifi) &&
ttls[vifi] && ttls[vifi] < 255) {
cache->mfc_un.res.ttls[vifi] = ttls[vifi];
if (cache->mfc_un.res.minvif > vifi)
@@ -614,16 +643,17 @@ static void ip6mr_update_thresholds(struct net *net, struct mfc6_cache *cache,
}
}
-static int mif6_add(struct net *net, struct mif6ctl *vifc, int mrtsock)
+static int mif6_add(struct net *net, struct mr6_table *mrt,
+ struct mif6ctl *vifc, int mrtsock)
{
int vifi = vifc->mif6c_mifi;
- struct mif_device *v = &net->ipv6.vif6_table[vifi];
+ struct mif_device *v = &mrt->vif6_table[vifi];
struct net_device *dev;
struct inet6_dev *in6_dev;
int err;
/* Is vif busy ? */
- if (MIF_EXISTS(net, vifi))
+ if (MIF_EXISTS(mrt, vifi))
return -EADDRINUSE;
switch (vifc->mif6c_flags) {
@@ -633,7 +663,7 @@ static int mif6_add(struct net *net, struct mif6ctl *vifc, int mrtsock)
* Special Purpose VIF in PIM
* All the packets will be sent to the daemon
*/
- if (net->ipv6.mroute_reg_vif_num >= 0)
+ if (mrt->mroute_reg_vif_num >= 0)
return -EADDRINUSE;
dev = ip6mr_reg_vif(net);
if (!dev)
@@ -685,22 +715,22 @@ static int mif6_add(struct net *net, struct mif6ctl *vifc, int mrtsock)
v->dev = dev;
#ifdef CONFIG_IPV6_PIMSM_V2
if (v->flags & MIFF_REGISTER)
- net->ipv6.mroute_reg_vif_num = vifi;
+ mrt->mroute_reg_vif_num = vifi;
#endif
- if (vifi + 1 > net->ipv6.maxvif)
- net->ipv6.maxvif = vifi + 1;
+ if (vifi + 1 > mrt->maxvif)
+ mrt->maxvif = vifi + 1;
write_unlock_bh(&mrt_lock);
return 0;
}
-static struct mfc6_cache *ip6mr_cache_find(struct net *net,
+static struct mfc6_cache *ip6mr_cache_find(struct mr6_table *mrt,
struct in6_addr *origin,
struct in6_addr *mcastgrp)
{
int line = MFC6_HASH(mcastgrp, origin);
struct mfc6_cache *c;
- list_for_each_entry(c, &net->ipv6.mfc6_cache_array[line], list) {
+ list_for_each_entry(c, &mrt->mfc6_cache_array[line], list) {
if (ipv6_addr_equal(&c->mf6c_origin, origin) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, mcastgrp))
return c;
@@ -734,8 +764,8 @@ static struct mfc6_cache *ip6mr_cache_alloc_unres(void)
* A cache entry has gone into a resolved state from queued
*/
-static void ip6mr_cache_resolve(struct net *net, struct mfc6_cache *uc,
- struct mfc6_cache *c)
+static void ip6mr_cache_resolve(struct net *net, struct mr6_table *mrt,
+ struct mfc6_cache *uc, struct mfc6_cache *c)
{
struct sk_buff *skb;
@@ -748,7 +778,7 @@ static void ip6mr_cache_resolve(struct net *net, struct mfc6_cache *uc,
int err;
struct nlmsghdr *nlh = (struct nlmsghdr *)skb_pull(skb, sizeof(struct ipv6hdr));
- if (ip6mr_fill_mroute(net, skb, c, NLMSG_DATA(nlh)) > 0) {
+ if (ip6mr_fill_mroute(mrt, skb, c, NLMSG_DATA(nlh)) > 0) {
nlh->nlmsg_len = skb_tail_pointer(skb) - (u8 *)nlh;
} else {
nlh->nlmsg_type = NLMSG_ERROR;
@@ -758,7 +788,7 @@ static void ip6mr_cache_resolve(struct net *net, struct mfc6_cache *uc,
}
err = rtnl_unicast(skb, net, NETLINK_CB(skb).pid);
} else
- ip6_mr_forward(net, skb, c);
+ ip6_mr_forward(net, mrt, skb, c);
}
}
@@ -769,8 +799,8 @@ static void ip6mr_cache_resolve(struct net *net, struct mfc6_cache *uc,
* Called under mrt_lock.
*/
-static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt, mifi_t mifi,
- int assert)
+static int ip6mr_cache_report(struct mr6_table *mrt, struct sk_buff *pkt,
+ mifi_t mifi, int assert)
{
struct sk_buff *skb;
struct mrt6msg *msg;
@@ -806,7 +836,7 @@ static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt, mifi_t mifi,
msg = (struct mrt6msg *)skb_transport_header(skb);
msg->im6_mbz = 0;
msg->im6_msgtype = MRT6MSG_WHOLEPKT;
- msg->im6_mif = net->ipv6.mroute_reg_vif_num;
+ msg->im6_mif = mrt->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);
@@ -841,7 +871,7 @@ static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt, mifi_t mifi,
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
- if (net->ipv6.mroute6_sk == NULL) {
+ if (mrt->mroute6_sk == NULL) {
kfree_skb(skb);
return -EINVAL;
}
@@ -849,7 +879,7 @@ static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt, mifi_t mifi,
/*
* Deliver to user space multicast routing algorithms
*/
- ret = sock_queue_rcv_skb(net->ipv6.mroute6_sk, skb);
+ ret = sock_queue_rcv_skb(mrt->mroute6_sk, skb);
if (ret < 0) {
if (net_ratelimit())
printk(KERN_WARNING "mroute6: pending queue full, dropping entries.\n");
@@ -864,14 +894,14 @@ static int ip6mr_cache_report(struct net *net, struct sk_buff *pkt, mifi_t mifi,
*/
static int
-ip6mr_cache_unresolved(struct net *net, mifi_t mifi, struct sk_buff *skb)
+ip6mr_cache_unresolved(struct mr6_table *mrt, mifi_t mifi, struct sk_buff *skb)
{
bool found = false;
int err;
struct mfc6_cache *c;
spin_lock_bh(&mfc_unres_lock);
- list_for_each_entry(c, &net->ipv6.mfc6_unres_queue, list) {
+ list_for_each_entry(c, &mrt->mfc6_unres_queue, list) {
if (ipv6_addr_equal(&c->mf6c_mcastgrp, &ipv6_hdr(skb)->daddr) &&
ipv6_addr_equal(&c->mf6c_origin, &ipv6_hdr(skb)->saddr)) {
found = true;
@@ -884,7 +914,7 @@ ip6mr_cache_unresolved(struct net *net, mifi_t mifi, struct sk_buff *skb)
* Create a new entry if allowable
*/
- if (atomic_read(&net->ipv6.cache_resolve_queue_len) >= 10 ||
+ if (atomic_read(&mrt->cache_resolve_queue_len) >= 10 ||
(c = ip6mr_cache_alloc_unres()) == NULL) {
spin_unlock_bh(&mfc_unres_lock);
@@ -902,7 +932,7 @@ ip6mr_cache_unresolved(struct net *net, mifi_t mifi, struct sk_buff *skb)
/*
* Reflect first query at pim6sd
*/
- err = ip6mr_cache_report(net, skb, mifi, MRT6MSG_NOCACHE);
+ err = ip6mr_cache_report(mrt, skb, mifi, MRT6MSG_NOCACHE);
if (err < 0) {
/* If the report failed throw the cache entry
out - Brad Parker
@@ -914,10 +944,10 @@ ip6mr_cache_unresolved(struct net *net, mifi_t mifi, struct sk_buff *skb)
return err;
}
- atomic_inc(&net->ipv6.cache_resolve_queue_len);
- list_add(&c->list, &net->ipv6.mfc6_unres_queue);
+ atomic_inc(&mrt->cache_resolve_queue_len);
+ list_add(&c->list, &mrt->mfc6_unres_queue);
- ipmr_do_expire_process(net);
+ ipmr_do_expire_process(mrt);
}
/*
@@ -939,14 +969,14 @@ ip6mr_cache_unresolved(struct net *net, mifi_t mifi, struct sk_buff *skb)
* MFC6 cache manipulation by user space
*/
-static int ip6mr_mfc_delete(struct net *net, struct mf6cctl *mfc)
+static int ip6mr_mfc_delete(struct mr6_table *mrt, struct mf6cctl *mfc)
{
int line;
struct mfc6_cache *c, *next;
line = MFC6_HASH(&mfc->mf6cc_mcastgrp.sin6_addr, &mfc->mf6cc_origin.sin6_addr);
- list_for_each_entry_safe(c, next, &net->ipv6.mfc6_cache_array[line], list) {
+ list_for_each_entry_safe(c, next, &mrt->mfc6_cache_array[line], list) {
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, &mfc->mf6cc_mcastgrp.sin6_addr)) {
write_lock_bh(&mrt_lock);
@@ -965,6 +995,7 @@ static int ip6mr_device_event(struct notifier_block *this,
{
struct net_device *dev = ptr;
struct net *net = dev_net(dev);
+ struct mr6_table *mrt = net->ipv6.mrt6;
struct mif_device *v;
int ct;
LIST_HEAD(list);
@@ -972,10 +1003,10 @@ static int ip6mr_device_event(struct notifier_block *this,
if (event != NETDEV_UNREGISTER)
return NOTIFY_DONE;
- v = &net->ipv6.vif6_table[0];
- for (ct = 0; ct < net->ipv6.maxvif; ct++, v++) {
+ v = &mrt->vif6_table[0];
+ for (ct = 0; ct < mrt->maxvif; ct++, v++) {
if (v->dev == dev)
- mif6_delete(net, ct, &list);
+ mif6_delete(mrt, ct, &list);
}
unregister_netdevice_many(&list);
@@ -992,35 +1023,28 @@ static struct notifier_block ip6_mr_notifier = {
static int __net_init ip6mr_net_init(struct net *net)
{
+ struct mr6_table *mrt;
unsigned int i;
int err = 0;
- net->ipv6.vif6_table = kcalloc(MAXMIFS, sizeof(struct mif_device),
- GFP_KERNEL);
- if (!net->ipv6.vif6_table) {
+ mrt = kzalloc(sizeof(*mrt), GFP_KERNEL);
+ if (mrt == NULL) {
err = -ENOMEM;
goto fail;
}
- /* Forwarding cache */
- net->ipv6.mfc6_cache_array = kcalloc(MFC6_LINES,
- sizeof(struct list_head),
- GFP_KERNEL);
- if (!net->ipv6.mfc6_cache_array) {
- err = -ENOMEM;
- goto fail_mfc6_cache;
- }
+ write_pnet(&mrt->net, net);
for (i = 0; i < MFC6_LINES; i++)
- INIT_LIST_HEAD(&net->ipv6.mfc6_cache_array[i]);
+ INIT_LIST_HEAD(&mrt->mfc6_cache_array[i]);
- INIT_LIST_HEAD(&net->ipv6.mfc6_unres_queue);
+ INIT_LIST_HEAD(&mrt->mfc6_unres_queue);
- setup_timer(&net->ipv6.ipmr_expire_timer, ipmr_expire_process,
- (unsigned long)net);
+ setup_timer(&mrt->ipmr_expire_timer, ipmr_expire_process,
+ (unsigned long)mrt);
#ifdef CONFIG_IPV6_PIMSM_V2
- net->ipv6.mroute_reg_vif_num = -1;
+ mrt->mroute_reg_vif_num = -1;
#endif
#ifdef CONFIG_PROC_FS
@@ -1030,30 +1054,31 @@ static int __net_init ip6mr_net_init(struct net *net)
if (!proc_net_fops_create(net, "ip6_mr_cache", 0, &ip6mr_mfc_fops))
goto proc_cache_fail;
#endif
+
+ net->ipv6.mrt6 = mrt;
return 0;
#ifdef CONFIG_PROC_FS
proc_cache_fail:
proc_net_remove(net, "ip6_mr_vif");
proc_vif_fail:
- kfree(net->ipv6.mfc6_cache_array);
+ kfree(mrt);
#endif
-fail_mfc6_cache:
- kfree(net->ipv6.vif6_table);
fail:
return err;
}
static void __net_exit ip6mr_net_exit(struct net *net)
{
+ struct mr6_table *mrt = net->ipv6.mrt6;
+
#ifdef CONFIG_PROC_FS
proc_net_remove(net, "ip6_mr_cache");
proc_net_remove(net, "ip6_mr_vif");
#endif
- del_timer(&net->ipv6.ipmr_expire_timer);
- mroute_clean_tables(net);
- kfree(net->ipv6.mfc6_cache_array);
- kfree(net->ipv6.vif6_table);
+ del_timer(&mrt->ipmr_expire_timer);
+ mroute_clean_tables(mrt);
+ kfree(mrt);
}
static struct pernet_operations ip6mr_net_ops = {
@@ -1105,7 +1130,8 @@ void ip6_mr_cleanup(void)
kmem_cache_destroy(mrt_cachep);
}
-static int ip6mr_mfc_add(struct net *net, struct mf6cctl *mfc, int mrtsock)
+static int ip6mr_mfc_add(struct net *net, struct mr6_table *mrt,
+ struct mf6cctl *mfc, int mrtsock)
{
bool found = false;
int line;
@@ -1125,7 +1151,7 @@ static int ip6mr_mfc_add(struct net *net, struct mf6cctl *mfc, int mrtsock)
line = MFC6_HASH(&mfc->mf6cc_mcastgrp.sin6_addr, &mfc->mf6cc_origin.sin6_addr);
- list_for_each_entry(c, &net->ipv6.mfc6_cache_array[line], list) {
+ list_for_each_entry(c, &mrt->mfc6_cache_array[line], list) {
if (ipv6_addr_equal(&c->mf6c_origin, &mfc->mf6cc_origin.sin6_addr) &&
ipv6_addr_equal(&c->mf6c_mcastgrp, &mfc->mf6cc_mcastgrp.sin6_addr)) {
found = true;
@@ -1136,7 +1162,7 @@ static int ip6mr_mfc_add(struct net *net, struct mf6cctl *mfc, int mrtsock)
if (found) {
write_lock_bh(&mrt_lock);
c->mf6c_parent = mfc->mf6cc_parent;
- ip6mr_update_thresholds(net, c, ttls);
+ ip6mr_update_thresholds(mrt, c, ttls);
if (!mrtsock)
c->mfc_flags |= MFC_STATIC;
write_unlock_bh(&mrt_lock);
@@ -1153,12 +1179,12 @@ static int ip6mr_mfc_add(struct net *net, struct mf6cctl *mfc, int mrtsock)
c->mf6c_origin = mfc->mf6cc_origin.sin6_addr;
c->mf6c_mcastgrp = mfc->mf6cc_mcastgrp.sin6_addr;
c->mf6c_parent = mfc->mf6cc_parent;
- ip6mr_update_thresholds(net, c, ttls);
+ ip6mr_update_thresholds(mrt, c, ttls);
if (!mrtsock)
c->mfc_flags |= MFC_STATIC;
write_lock_bh(&mrt_lock);
- list_add(&c->list, &net->ipv6.mfc6_cache_array[line]);
+ list_add(&c->list, &mrt->mfc6_cache_array[line]);
write_unlock_bh(&mrt_lock);
/*
@@ -1167,21 +1193,21 @@ static int ip6mr_mfc_add(struct net *net, struct mf6cctl *mfc, int mrtsock)
*/
found = false;
spin_lock_bh(&mfc_unres_lock);
- list_for_each_entry(uc, &net->ipv6.mfc6_unres_queue, list) {
+ list_for_each_entry(uc, &mrt->mfc6_unres_queue, list) {
if (ipv6_addr_equal(&uc->mf6c_origin, &c->mf6c_origin) &&
ipv6_addr_equal(&uc->mf6c_mcastgrp, &c->mf6c_mcastgrp)) {
list_del(&uc->list);
- atomic_dec(&net->ipv6.cache_resolve_queue_len);
+ atomic_dec(&mrt->cache_resolve_queue_len);
found = true;
break;
}
}
- if (list_empty(&net->ipv6.mfc6_unres_queue))
- del_timer(&net->ipv6.ipmr_expire_timer);
+ if (list_empty(&mrt->mfc6_unres_queue))
+ del_timer(&mrt->ipmr_expire_timer);
spin_unlock_bh(&mfc_unres_lock);
if (found) {
- ip6mr_cache_resolve(net, uc, c);
+ ip6mr_cache_resolve(net, mrt, uc, c);
ip6mr_cache_free(uc);
}
return 0;
@@ -1191,7 +1217,7 @@ static int ip6mr_mfc_add(struct net *net, struct mf6cctl *mfc, int mrtsock)
* Close the multicast socket, and clear the vif tables etc
*/
-static void mroute_clean_tables(struct net *net)
+static void mroute_clean_tables(struct mr6_table *mrt)
{
int i;
LIST_HEAD(list);
@@ -1200,9 +1226,9 @@ static void mroute_clean_tables(struct net *net)
/*
* Shut down all active vif entries
*/
- for (i = 0; i < net->ipv6.maxvif; i++) {
- if (!(net->ipv6.vif6_table[i].flags & VIFF_STATIC))
- mif6_delete(net, i, &list);
+ for (i = 0; i < mrt->maxvif; i++) {
+ if (!(mrt->vif6_table[i].flags & VIFF_STATIC))
+ mif6_delete(mrt, i, &list);
}
unregister_netdevice_many(&list);
@@ -1210,7 +1236,7 @@ static void mroute_clean_tables(struct net *net)
* Wipe the cache
*/
for (i = 0; i < MFC6_LINES; i++) {
- list_for_each_entry_safe(c, next, &net->ipv6.mfc6_cache_array[i], list) {
+ list_for_each_entry_safe(c, next, &mrt->mfc6_cache_array[i], list) {
if (c->mfc_flags & MFC_STATIC)
continue;
write_lock_bh(&mrt_lock);
@@ -1221,25 +1247,25 @@ static void mroute_clean_tables(struct net *net)
}
}
- if (atomic_read(&net->ipv6.cache_resolve_queue_len) != 0) {
+ if (atomic_read(&mrt->cache_resolve_queue_len) != 0) {
spin_lock_bh(&mfc_unres_lock);
- list_for_each_entry_safe(c, next, &net->ipv6.mfc6_unres_queue, list) {
+ list_for_each_entry_safe(c, next, &mrt->mfc6_unres_queue, list) {
list_del(&c->list);
- ip6mr_destroy_unres(net, c);
+ ip6mr_destroy_unres(mrt, c);
}
spin_unlock_bh(&mfc_unres_lock);
}
}
-static int ip6mr_sk_init(struct sock *sk)
+static int ip6mr_sk_init(struct mr6_table *mrt, struct sock *sk)
{
int err = 0;
struct net *net = sock_net(sk);
rtnl_lock();
write_lock_bh(&mrt_lock);
- if (likely(net->ipv6.mroute6_sk == NULL)) {
- net->ipv6.mroute6_sk = sk;
+ if (likely(mrt->mroute6_sk == NULL)) {
+ mrt->mroute6_sk = sk;
net->ipv6.devconf_all->mc_forwarding++;
}
else
@@ -1255,15 +1281,16 @@ int ip6mr_sk_done(struct sock *sk)
{
int err = 0;
struct net *net = sock_net(sk);
+ struct mr6_table *mrt = net->ipv6.mrt6;
rtnl_lock();
- if (sk == net->ipv6.mroute6_sk) {
+ if (sk == mrt->mroute6_sk) {
write_lock_bh(&mrt_lock);
- net->ipv6.mroute6_sk = NULL;
+ mrt->mroute6_sk = NULL;
net->ipv6.devconf_all->mc_forwarding--;
write_unlock_bh(&mrt_lock);
- mroute_clean_tables(net);
+ mroute_clean_tables(mrt);
} else
err = -EACCES;
rtnl_unlock();
@@ -1271,6 +1298,13 @@ int ip6mr_sk_done(struct sock *sk)
return err;
}
+struct sock *mroute6_socket(struct net *net)
+{
+ struct mr6_table *mrt = net->ipv6.mrt6;
+
+ return mrt->mroute6_sk;
+}
+
/*
* Socket options and virtual interface manipulation. The whole
* virtual interface system is a complete heap, but unfortunately
@@ -1285,9 +1319,10 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
struct mf6cctl mfc;
mifi_t mifi;
struct net *net = sock_net(sk);
+ struct mr6_table *mrt = net->ipv6.mrt6;
if (optname != MRT6_INIT) {
- if (sk != net->ipv6.mroute6_sk && !capable(CAP_NET_ADMIN))
+ if (sk != mrt->mroute6_sk && !capable(CAP_NET_ADMIN))
return -EACCES;
}
@@ -1299,7 +1334,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
if (optlen < sizeof(int))
return -EINVAL;
- return ip6mr_sk_init(sk);
+ return ip6mr_sk_init(mrt, sk);
case MRT6_DONE:
return ip6mr_sk_done(sk);
@@ -1312,7 +1347,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
if (vif.mif6c_mifi >= MAXMIFS)
return -ENFILE;
rtnl_lock();
- ret = mif6_add(net, &vif, sk == net->ipv6.mroute6_sk);
+ ret = mif6_add(net, mrt, &vif, sk == mrt->mroute6_sk);
rtnl_unlock();
return ret;
@@ -1322,7 +1357,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
if (copy_from_user(&mifi, optval, sizeof(mifi_t)))
return -EFAULT;
rtnl_lock();
- ret = mif6_delete(net, mifi, NULL);
+ ret = mif6_delete(mrt, mifi, NULL);
rtnl_unlock();
return ret;
@@ -1338,10 +1373,9 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
return -EFAULT;
rtnl_lock();
if (optname == MRT6_DEL_MFC)
- ret = ip6mr_mfc_delete(net, &mfc);
+ ret = ip6mr_mfc_delete(mrt, &mfc);
else
- ret = ip6mr_mfc_add(net, &mfc,
- sk == net->ipv6.mroute6_sk);
+ ret = ip6mr_mfc_add(net, mrt, &mfc, sk == mrt->mroute6_sk);
rtnl_unlock();
return ret;
@@ -1353,7 +1387,7 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
int v;
if (get_user(v, (int __user *)optval))
return -EFAULT;
- net->ipv6.mroute_do_assert = !!v;
+ mrt->mroute_do_assert = !!v;
return 0;
}
@@ -1366,9 +1400,9 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
v = !!v;
rtnl_lock();
ret = 0;
- if (v != net->ipv6.mroute_do_pim) {
- net->ipv6.mroute_do_pim = v;
- net->ipv6.mroute_do_assert = v;
+ if (v != mrt->mroute_do_pim) {
+ mrt->mroute_do_pim = v;
+ mrt->mroute_do_assert = v;
}
rtnl_unlock();
return ret;
@@ -1394,6 +1428,7 @@ int ip6_mroute_getsockopt(struct sock *sk, int optname, char __user *optval,
int olr;
int val;
struct net *net = sock_net(sk);
+ struct mr6_table *mrt = net->ipv6.mrt6;
switch (optname) {
case MRT6_VERSION:
@@ -1401,11 +1436,11 @@ int ip6_mroute_getsockopt(struct sock *sk, int optname, char __user *optval,
break;
#ifdef CONFIG_IPV6_PIMSM_V2
case MRT6_PIM:
- val = net->ipv6.mroute_do_pim;
+ val = mrt->mroute_do_pim;
break;
#endif
case MRT6_ASSERT:
- val = net->ipv6.mroute_do_assert;
+ val = mrt->mroute_do_assert;
break;
default:
return -ENOPROTOOPT;
@@ -1436,16 +1471,17 @@ int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
struct mif_device *vif;
struct mfc6_cache *c;
struct net *net = sock_net(sk);
+ struct mr6_table *mrt = net->ipv6.mrt6;
switch (cmd) {
case SIOCGETMIFCNT_IN6:
if (copy_from_user(&vr, arg, sizeof(vr)))
return -EFAULT;
- if (vr.mifi >= net->ipv6.maxvif)
+ if (vr.mifi >= mrt->maxvif)
return -EINVAL;
read_lock(&mrt_lock);
- vif = &net->ipv6.vif6_table[vr.mifi];
- if (MIF_EXISTS(net, vr.mifi)) {
+ vif = &mrt->vif6_table[vr.mifi];
+ if (MIF_EXISTS(mrt, vr.mifi)) {
vr.icount = vif->pkt_in;
vr.ocount = vif->pkt_out;
vr.ibytes = vif->bytes_in;
@@ -1463,7 +1499,7 @@ int ip6mr_ioctl(struct sock *sk, int cmd, void __user *arg)
return -EFAULT;
read_lock(&mrt_lock);
- c = ip6mr_cache_find(net, &sr.src.sin6_addr, &sr.grp.sin6_addr);
+ c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr);
if (c) {
sr.pktcnt = c->mfc_un.res.pkt;
sr.bytecnt = c->mfc_un.res.bytes;
@@ -1493,11 +1529,11 @@ static inline int ip6mr_forward2_finish(struct sk_buff *skb)
* Processing handlers for ip6mr_forward
*/
-static int ip6mr_forward2(struct net *net, struct sk_buff *skb,
- struct mfc6_cache *c, int vifi)
+static int ip6mr_forward2(struct net *net, struct mr6_table *mrt,
+ struct sk_buff *skb, struct mfc6_cache *c, int vifi)
{
struct ipv6hdr *ipv6h;
- struct mif_device *vif = &net->ipv6.vif6_table[vifi];
+ struct mif_device *vif = &mrt->vif6_table[vifi];
struct net_device *dev;
struct dst_entry *dst;
struct flowi fl;
@@ -1511,7 +1547,7 @@ static int ip6mr_forward2(struct net *net, struct sk_buff *skb,
vif->bytes_out += skb->len;
vif->dev->stats.tx_bytes += skb->len;
vif->dev->stats.tx_packets++;
- ip6mr_cache_report(net, skb, vifi, MRT6MSG_WHOLEPKT);
+ ip6mr_cache_report(mrt, skb, vifi, MRT6MSG_WHOLEPKT);
goto out_free;
}
#endif
@@ -1566,19 +1602,19 @@ out_free:
return 0;
}
-static int ip6mr_find_vif(struct net_device *dev)
+static int ip6mr_find_vif(struct mr6_table *mrt, struct net_device *dev)
{
- struct net *net = dev_net(dev);
int ct;
- for (ct = net->ipv6.maxvif - 1; ct >= 0; ct--) {
- if (ne