* Authors:
* Pedro Roque <roque@di.fc.ul.pt>
*
- * $Id: route.c,v 1.56 2001/10/31 21:55:55 davem Exp $
- *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
#include <linux/route.h>
#include <linux/netdevice.h>
#include <linux/in6.h>
+#include <linux/mroute6.h>
#include <linux/init.h>
#include <linux/if_arp.h>
#include <linux/proc_fs.h>
struct in6_addr *gwaddr, int ifindex);
#endif
-static struct dst_ops ip6_dst_ops = {
+static struct dst_ops ip6_dst_ops_template = {
.family = AF_INET6,
- .protocol = __constant_htons(ETH_P_IPV6),
+ .protocol = cpu_to_be16(ETH_P_IPV6),
.gc = ip6_dst_gc,
.gc_thresh = 1024,
.check = ip6_dst_check,
.negative_advice = ip6_negative_advice,
.link_failure = ip6_link_failure,
.update_pmtu = ip6_rt_update_pmtu,
- .local_out = ip6_local_out,
- .entry_size = sizeof(struct rt6_info),
+ .local_out = __ip6_local_out,
.entries = ATOMIC_INIT(0),
};
static struct dst_ops ip6_dst_blackhole_ops = {
.family = AF_INET6,
- .protocol = __constant_htons(ETH_P_IPV6),
+ .protocol = cpu_to_be16(ETH_P_IPV6),
.destroy = ip6_dst_destroy,
.check = ip6_dst_check,
.update_pmtu = ip6_rt_blackhole_update_pmtu,
- .entry_size = sizeof(struct rt6_info),
.entries = ATOMIC_INIT(0),
};
-struct rt6_info ip6_null_entry = {
+static struct rt6_info ip6_null_entry_template = {
.u = {
.dst = {
.__refcnt = ATOMIC_INIT(1),
.metrics = { [RTAX_HOPLIMIT - 1] = 255, },
.input = ip6_pkt_discard,
.output = ip6_pkt_discard_out,
- .ops = &ip6_dst_ops,
- .path = (struct dst_entry*)&ip6_null_entry,
}
},
.rt6i_flags = (RTF_REJECT | RTF_NONEXTHOP),
+ .rt6i_protocol = RTPROT_KERNEL,
.rt6i_metric = ~(u32) 0,
.rt6i_ref = ATOMIC_INIT(1),
};
static int ip6_pkt_prohibit(struct sk_buff *skb);
static int ip6_pkt_prohibit_out(struct sk_buff *skb);
-struct rt6_info ip6_prohibit_entry = {
+static struct rt6_info ip6_prohibit_entry_template = {
.u = {
.dst = {
.__refcnt = ATOMIC_INIT(1),
.metrics = { [RTAX_HOPLIMIT - 1] = 255, },
.input = ip6_pkt_prohibit,
.output = ip6_pkt_prohibit_out,
- .ops = &ip6_dst_ops,
- .path = (struct dst_entry*)&ip6_prohibit_entry,
}
},
.rt6i_flags = (RTF_REJECT | RTF_NONEXTHOP),
+ .rt6i_protocol = RTPROT_KERNEL,
.rt6i_metric = ~(u32) 0,
.rt6i_ref = ATOMIC_INIT(1),
};
-struct rt6_info ip6_blk_hole_entry = {
+static struct rt6_info ip6_blk_hole_entry_template = {
.u = {
.dst = {
.__refcnt = ATOMIC_INIT(1),
.metrics = { [RTAX_HOPLIMIT - 1] = 255, },
.input = dst_discard,
.output = dst_discard,
- .ops = &ip6_dst_ops,
- .path = (struct dst_entry*)&ip6_blk_hole_entry,
}
},
.rt6i_flags = (RTF_REJECT | RTF_NONEXTHOP),
+ .rt6i_protocol = RTPROT_KERNEL,
.rt6i_metric = ~(u32) 0,
.rt6i_ref = ATOMIC_INIT(1),
};
#endif
/* allocate dst with ip6_dst_ops */
-static __inline__ struct rt6_info *ip6_dst_alloc(void)
+static inline struct rt6_info *ip6_dst_alloc(struct dst_ops *ops)
{
- return (struct rt6_info *)dst_alloc(&ip6_dst_ops);
+ return (struct rt6_info *)dst_alloc(ops);
}
static void ip6_dst_destroy(struct dst_entry *dst)
struct rt6_info *rt = (struct rt6_info *)dst;
struct inet6_dev *idev = rt->rt6i_idev;
struct net_device *loopback_dev =
- dev->nd_net->loopback_dev;
+ dev_net(dev)->loopback_dev;
if (dev != loopback_dev && idev != NULL && idev->dev == dev) {
struct inet6_dev *loopback_idev =
static inline int rt6_need_strict(struct in6_addr *daddr)
{
return (ipv6_addr_type(daddr) &
- (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL));
+ (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK));
}
/*
* Route lookup. Any table->tb6_lock is implied.
*/
-static __inline__ struct rt6_info *rt6_device_match(struct rt6_info *rt,
+static inline struct rt6_info *rt6_device_match(struct net *net,
+ struct rt6_info *rt,
+ struct in6_addr *saddr,
int oif,
- int strict)
+ int flags)
{
struct rt6_info *local = NULL;
struct rt6_info *sprt;
- if (oif) {
- for (sprt = rt; sprt; sprt = sprt->u.dst.rt6_next) {
- struct net_device *dev = sprt->rt6i_dev;
+ if (!oif && ipv6_addr_any(saddr))
+ goto out;
+
+ for (sprt = rt; sprt; sprt = sprt->u.dst.rt6_next) {
+ struct net_device *dev = sprt->rt6i_dev;
+
+ if (oif) {
if (dev->ifindex == oif)
return sprt;
if (dev->flags & IFF_LOOPBACK) {
if (sprt->rt6i_idev == NULL ||
sprt->rt6i_idev->dev->ifindex != oif) {
- if (strict && oif)
+ if (flags & RT6_LOOKUP_F_IFACE && oif)
continue;
if (local && (!oif ||
local->rt6i_idev->dev->ifindex == oif))
}
local = sprt;
}
+ } else {
+ if (ipv6_chk_addr(net, saddr, dev,
+ flags & RT6_LOOKUP_F_IFACE))
+ return sprt;
}
+ }
+ if (oif) {
if (local)
return local;
- if (strict)
- return &ip6_null_entry;
+ if (flags & RT6_LOOKUP_F_IFACE)
+ return net->ipv6.ip6_null_entry;
}
+out:
return rt;
}
static struct rt6_info *rt6_select(struct fib6_node *fn, int oif, int strict)
{
struct rt6_info *match, *rt0;
+ struct net *net;
RT6_TRACE("%s(fn->leaf=%p, oif=%d)\n",
- __FUNCTION__, fn->leaf, oif);
+ __func__, fn->leaf, oif);
rt0 = fn->rr_ptr;
if (!rt0)
}
RT6_TRACE("%s() => %p\n",
- __FUNCTION__, match);
+ __func__, match);
- return (match ? match : &ip6_null_entry);
+ net = dev_net(rt0->rt6i_dev);
+ return (match ? match : net->ipv6.ip6_null_entry);
}
#ifdef CONFIG_IPV6_ROUTE_INFO
int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
struct in6_addr *gwaddr)
{
- struct net *net = dev->nd_net;
+ struct net *net = dev_net(dev);
struct route_info *rinfo = (struct route_info *) opt;
struct in6_addr prefix_buf, *prefix;
unsigned int pref;
- u32 lifetime;
+ unsigned long lifetime;
struct rt6_info *rt;
if (len < sizeof(struct route_info)) {
pref = rinfo->route_pref;
if (pref == ICMPV6_ROUTER_PREF_INVALID)
- pref = ICMPV6_ROUTER_PREF_MEDIUM;
+ return -EINVAL;
- lifetime = ntohl(rinfo->lifetime);
- if (lifetime == 0xffffffff) {
- /* infinity */
- } else if (lifetime > 0x7fffffff/HZ) {
- /* Avoid arithmetic overflow */
- lifetime = 0x7fffffff/HZ - 1;
- }
+ lifetime = addrconf_timeout_fixup(ntohl(rinfo->lifetime), HZ);
if (rinfo->length == 3)
prefix = (struct in6_addr *)rinfo->prefix;
(rt->rt6i_flags & ~RTF_PREF_MASK) | RTF_PREF(pref);
if (rt) {
- if (lifetime == 0xffffffff) {
+ if (!addrconf_finite_timeout(lifetime)) {
rt->rt6i_flags &= ~RTF_EXPIRES;
} else {
rt->rt6i_expires = jiffies + HZ * lifetime;
}
#endif
-#define BACKTRACK(saddr) \
+#define BACKTRACK(__net, saddr) \
do { \
- if (rt == &ip6_null_entry) { \
+ if (rt == __net->ipv6.ip6_null_entry) { \
struct fib6_node *pn; \
while (1) { \
if (fn->fn_flags & RTN_TL_ROOT) \
} \
} while(0)
-static struct rt6_info *ip6_pol_route_lookup(struct fib6_table *table,
+static struct rt6_info *ip6_pol_route_lookup(struct net *net,
+ struct fib6_table *table,
struct flowi *fl, int flags)
{
struct fib6_node *fn;
fn = fib6_lookup(&table->tb6_root, &fl->fl6_dst, &fl->fl6_src);
restart:
rt = fn->leaf;
- rt = rt6_device_match(rt, fl->oif, flags);
- BACKTRACK(&fl->fl6_src);
+ rt = rt6_device_match(net, rt, &fl->fl6_src, fl->oif, flags);
+ BACKTRACK(net, &fl->fl6_src);
out:
dst_use(&rt->u.dst, jiffies);
read_unlock_bh(&table->tb6_lock);
}
-struct rt6_info *rt6_lookup(struct net *net, struct in6_addr *daddr,
- struct in6_addr *saddr, int oif, int strict)
+struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr,
+ const struct in6_addr *saddr, int oif, int strict)
{
struct flowi fl = {
.oif = oif,
int ip6_ins_rt(struct rt6_info *rt)
{
struct nl_info info = {
- .nl_net = &init_net,
+ .nl_net = dev_net(rt->rt6i_dev),
};
return __ip6_ins_rt(rt, &info);
}
rt = ip6_rt_copy(ort);
if (rt) {
+ struct neighbour *neigh;
+ int attempts = !in_softirq();
+
if (!(rt->rt6i_flags&RTF_GATEWAY)) {
if (rt->rt6i_dst.plen != 128 &&
ipv6_addr_equal(&rt->rt6i_dst.addr, daddr))
}
#endif
- rt->rt6i_nexthop = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway);
+ retry:
+ neigh = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway);
+ if (IS_ERR(neigh)) {
+ struct net *net = dev_net(rt->rt6i_dev);
+ int saved_rt_min_interval =
+ net->ipv6.sysctl.ip6_rt_gc_min_interval;
+ int saved_rt_elasticity =
+ net->ipv6.sysctl.ip6_rt_gc_elasticity;
+
+ if (attempts-- > 0) {
+ net->ipv6.sysctl.ip6_rt_gc_elasticity = 1;
+ net->ipv6.sysctl.ip6_rt_gc_min_interval = 0;
+
+ ip6_dst_gc(&net->ipv6.ip6_dst_ops);
+
+ net->ipv6.sysctl.ip6_rt_gc_elasticity =
+ saved_rt_elasticity;
+ net->ipv6.sysctl.ip6_rt_gc_min_interval =
+ saved_rt_min_interval;
+ goto retry;
+ }
+
+ if (net_ratelimit())
+ printk(KERN_WARNING
+ "Neighbour table overflow.\n");
+ dst_free(&rt->u.dst);
+ return NULL;
+ }
+ rt->rt6i_nexthop = neigh;
}
return rt;
}
-static struct rt6_info *ip6_pol_route(struct fib6_table *table, int oif,
- struct flowi *fl, int flags)
+static struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table, int oif,
+ struct flowi *fl, int flags)
{
struct fib6_node *fn;
struct rt6_info *rt, *nrt;
int strict = 0;
int attempts = 3;
int err;
- int reachable = ipv6_devconf.forwarding ? 0 : RT6_LOOKUP_F_REACHABLE;
+ int reachable = net->ipv6.devconf_all->forwarding ? 0 : RT6_LOOKUP_F_REACHABLE;
strict |= flags & RT6_LOOKUP_F_IFACE;
restart:
rt = rt6_select(fn, oif, strict | reachable);
- BACKTRACK(&fl->fl6_src);
- if (rt == &ip6_null_entry ||
+
+ BACKTRACK(net, &fl->fl6_src);
+ if (rt == net->ipv6.ip6_null_entry ||
rt->rt6i_flags & RTF_CACHE)
goto out;
}
dst_release(&rt->u.dst);
- rt = nrt ? : &ip6_null_entry;
+ rt = nrt ? : net->ipv6.ip6_null_entry;
dst_hold(&rt->u.dst);
if (nrt) {
return rt;
}
-static struct rt6_info *ip6_pol_route_input(struct fib6_table *table,
+static struct rt6_info *ip6_pol_route_input(struct net *net, struct fib6_table *table,
struct flowi *fl, int flags)
{
- return ip6_pol_route(table, fl->iif, fl, flags);
+ return ip6_pol_route(net, table, fl->iif, fl, flags);
}
void ip6_route_input(struct sk_buff *skb)
{
struct ipv6hdr *iph = ipv6_hdr(skb);
+ struct net *net = dev_net(skb->dev);
int flags = RT6_LOOKUP_F_HAS_SADDR;
struct flowi fl = {
.iif = skb->dev->ifindex,
.proto = iph->nexthdr,
};
- if (rt6_need_strict(&iph->daddr))
+ if (rt6_need_strict(&iph->daddr) && skb->dev->type != ARPHRD_PIMREG)
flags |= RT6_LOOKUP_F_IFACE;
- skb->dst = fib6_rule_lookup(&init_net, &fl, flags, ip6_pol_route_input);
+ skb_dst_set(skb, fib6_rule_lookup(net, &fl, flags, ip6_pol_route_input));
}
-static struct rt6_info *ip6_pol_route_output(struct fib6_table *table,
+static struct rt6_info *ip6_pol_route_output(struct net *net, struct fib6_table *table,
struct flowi *fl, int flags)
{
- return ip6_pol_route(table, fl->oif, fl, flags);
+ return ip6_pol_route(net, table, fl->oif, fl, flags);
}
-struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)
+struct dst_entry * ip6_route_output(struct net *net, struct sock *sk,
+ struct flowi *fl)
{
int flags = 0;
if (!ipv6_addr_any(&fl->fl6_src))
flags |= RT6_LOOKUP_F_HAS_SADDR;
+ else if (sk) {
+ unsigned int prefs = inet6_sk(sk)->srcprefs;
+ if (prefs & IPV6_PREFER_SRC_TMP)
+ flags |= RT6_LOOKUP_F_SRCPREF_TMP;
+ if (prefs & IPV6_PREFER_SRC_PUBLIC)
+ flags |= RT6_LOOKUP_F_SRCPREF_PUBLIC;
+ if (prefs & IPV6_PREFER_SRC_COA)
+ flags |= RT6_LOOKUP_F_SRCPREF_COA;
+ }
- return fib6_rule_lookup(&init_net, fl, flags, ip6_pol_route_output);
+ return fib6_rule_lookup(net, fl, flags, ip6_pol_route_output);
}
EXPORT_SYMBOL(ip6_route_output);
icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_ADDR_UNREACH, 0, skb->dev);
- rt = (struct rt6_info *) skb->dst;
+ rt = (struct rt6_info *) skb_dst(skb);
if (rt) {
if (rt->rt6i_flags&RTF_CACHE) {
dst_set_expires(&rt->u.dst, 0);
static int ipv6_get_mtu(struct net_device *dev);
-static inline unsigned int ipv6_advmss(unsigned int mtu)
+static inline unsigned int ipv6_advmss(struct net *net, unsigned int mtu)
{
mtu -= sizeof(struct ipv6hdr) + sizeof(struct tcphdr);
- if (mtu < init_net.ipv6.sysctl.ip6_rt_min_advmss)
- mtu = init_net.ipv6.sysctl.ip6_rt_min_advmss;
+ if (mtu < net->ipv6.sysctl.ip6_rt_min_advmss)
+ mtu = net->ipv6.sysctl.ip6_rt_min_advmss;
/*
* Maximal non-jumbo IPv6 payload is IPV6_MAXPLEN and
struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
struct neighbour *neigh,
- struct in6_addr *addr)
+ const struct in6_addr *addr)
{
struct rt6_info *rt;
struct inet6_dev *idev = in6_dev_get(dev);
+ struct net *net = dev_net(dev);
if (unlikely(idev == NULL))
return NULL;
- rt = ip6_dst_alloc();
+ rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (unlikely(rt == NULL)) {
in6_dev_put(idev);
goto out;
dev_hold(dev);
if (neigh)
neigh_hold(neigh);
- else
+ else {
neigh = ndisc_get_neigh(dev, addr);
+ if (IS_ERR(neigh))
+ neigh = NULL;
+ }
rt->rt6i_dev = dev;
rt->rt6i_idev = idev;
atomic_set(&rt->u.dst.__refcnt, 1);
rt->u.dst.metrics[RTAX_HOPLIMIT-1] = 255;
rt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
- rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dst_mtu(&rt->u.dst));
+ rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->u.dst));
rt->u.dst.output = ip6_output;
#if 0 /* there's no chance to use these for ndisc */
icmp6_dst_gc_list = &rt->u.dst;
spin_unlock_bh(&icmp6_dst_lock);
- fib6_force_start_gc(dev->nd_net);
+ fib6_force_start_gc(net);
out:
return &rt->u.dst;
}
-int icmp6_dst_gc(int *more)
+int icmp6_dst_gc(void)
{
struct dst_entry *dst, *next, **pprev;
- int freed;
+ int more = 0;
next = NULL;
- freed = 0;
spin_lock_bh(&icmp6_dst_lock);
pprev = &icmp6_dst_gc_list;
if (!atomic_read(&dst->__refcnt)) {
*pprev = dst->next;
dst_free(dst);
- freed++;
} else {
pprev = &dst->next;
- (*more)++;
+ ++more;
}
}
spin_unlock_bh(&icmp6_dst_lock);
- return freed;
+ return more;
+}
+
+static void icmp6_clean_all(int (*func)(struct rt6_info *rt, void *arg),
+ void *arg)
+{
+ struct dst_entry *dst, **pprev;
+
+ spin_lock_bh(&icmp6_dst_lock);
+ pprev = &icmp6_dst_gc_list;
+ while ((dst = *pprev) != NULL) {
+ struct rt6_info *rt = (struct rt6_info *) dst;
+ if (func(rt, arg)) {
+ *pprev = dst->next;
+ dst_free(dst);
+ } else {
+ pprev = &dst->next;
+ }
+ }
+ spin_unlock_bh(&icmp6_dst_lock);
}
static int ip6_dst_gc(struct dst_ops *ops)
{
- static unsigned expire = 30*HZ;
- static unsigned long last_gc;
unsigned long now = jiffies;
-
- if (time_after(last_gc + init_net.ipv6.sysctl.ip6_rt_gc_min_interval, now) &&
- atomic_read(&ip6_dst_ops.entries) <= init_net.ipv6.sysctl.ip6_rt_max_size)
+ struct net *net = container_of(ops, struct net, ipv6.ip6_dst_ops);
+ int rt_min_interval = net->ipv6.sysctl.ip6_rt_gc_min_interval;
+ int rt_max_size = net->ipv6.sysctl.ip6_rt_max_size;
+ int rt_elasticity = net->ipv6.sysctl.ip6_rt_gc_elasticity;
+ int rt_gc_timeout = net->ipv6.sysctl.ip6_rt_gc_timeout;
+ unsigned long rt_last_gc = net->ipv6.ip6_rt_last_gc;
+
+ if (time_after(rt_last_gc + rt_min_interval, now) &&
+ atomic_read(&ops->entries) <= rt_max_size)
goto out;
- expire++;
- fib6_run_gc(expire, &init_net);
- last_gc = now;
- if (atomic_read(&ip6_dst_ops.entries) < ip6_dst_ops.gc_thresh)
- expire = init_net.ipv6.sysctl.ip6_rt_gc_timeout>>1;
-
+ net->ipv6.ip6_rt_gc_expire++;
+ fib6_run_gc(net->ipv6.ip6_rt_gc_expire, net);
+ net->ipv6.ip6_rt_last_gc = now;
+ if (atomic_read(&ops->entries) < ops->gc_thresh)
+ net->ipv6.ip6_rt_gc_expire = rt_gc_timeout>>1;
out:
- expire -= expire>>init_net.ipv6.sysctl.ip6_rt_gc_elasticity;
- return (atomic_read(&ip6_dst_ops.entries) > init_net.ipv6.sysctl.ip6_rt_max_size);
+ net->ipv6.ip6_rt_gc_expire -= net->ipv6.ip6_rt_gc_expire>>rt_elasticity;
+ return (atomic_read(&ops->entries) > rt_max_size);
}
/* Clean host part of a prefix. Not necessary in radix tree,
return mtu;
}
-int ipv6_get_hoplimit(struct net_device *dev)
+int ip6_dst_hoplimit(struct dst_entry *dst)
{
- int hoplimit = ipv6_devconf.hop_limit;
- struct inet6_dev *idev;
-
- idev = in6_dev_get(dev);
- if (idev) {
- hoplimit = idev->cnf.hop_limit;
- in6_dev_put(idev);
+ int hoplimit = dst_metric(dst, RTAX_HOPLIMIT);
+ if (hoplimit < 0) {
+ struct net_device *dev = dst->dev;
+ struct inet6_dev *idev = in6_dev_get(dev);
+ if (idev) {
+ hoplimit = idev->cnf.hop_limit;
+ in6_dev_put(idev);
+ } else
+ hoplimit = dev_net(dev)->ipv6.devconf_all->hop_limit;
}
return hoplimit;
}
int ip6_route_add(struct fib6_config *cfg)
{
int err;
+ struct net *net = cfg->fc_nlinfo.nl_net;
struct rt6_info *rt = NULL;
struct net_device *dev = NULL;
struct inet6_dev *idev = NULL;
#endif
if (cfg->fc_ifindex) {
err = -ENODEV;
- dev = dev_get_by_index(&init_net, cfg->fc_ifindex);
+ dev = dev_get_by_index(net, cfg->fc_ifindex);
if (!dev)
goto out;
idev = in6_dev_get(dev);
if (cfg->fc_metric == 0)
cfg->fc_metric = IP6_RT_PRIO_USER;
- table = fib6_new_table(&init_net, cfg->fc_table);
+ table = fib6_new_table(net, cfg->fc_table);
if (table == NULL) {
err = -ENOBUFS;
goto out;
}
- rt = ip6_dst_alloc();
+ rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (rt == NULL) {
err = -ENOMEM;
}
rt->u.dst.obsolete = -1;
- rt->rt6i_expires = jiffies + clock_t_to_jiffies(cfg->fc_expires);
+ rt->rt6i_expires = (cfg->fc_flags & RTF_EXPIRES) ?
+ jiffies + clock_t_to_jiffies(cfg->fc_expires) :
+ 0;
if (cfg->fc_protocol == RTPROT_UNSPEC)
cfg->fc_protocol = RTPROT_BOOT;
if ((cfg->fc_flags & RTF_REJECT) ||
(dev && (dev->flags&IFF_LOOPBACK) && !(addr_type&IPV6_ADDR_LOOPBACK))) {
/* hold loopback dev/idev if we haven't done so. */
- if (dev != init_net.loopback_dev) {
+ if (dev != net->loopback_dev) {
if (dev) {
dev_put(dev);
in6_dev_put(idev);
}
- dev = init_net.loopback_dev;
+ dev = net->loopback_dev;
dev_hold(dev);
idev = in6_dev_get(dev);
if (!idev) {
if (!(gwa_type&IPV6_ADDR_UNICAST))
goto out;
- grt = rt6_lookup(&init_net, gw_addr, NULL, cfg->fc_ifindex, 1);
+ grt = rt6_lookup(net, gw_addr, NULL, cfg->fc_ifindex, 1);
err = -EHOSTUNREACH;
if (grt == NULL)
}
}
- if (rt->u.dst.metrics[RTAX_HOPLIMIT-1] == 0)
+ if (dst_metric(&rt->u.dst, RTAX_HOPLIMIT) == 0)
rt->u.dst.metrics[RTAX_HOPLIMIT-1] = -1;
- if (!rt->u.dst.metrics[RTAX_MTU-1])
+ if (!dst_mtu(&rt->u.dst))
rt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(dev);
- if (!rt->u.dst.metrics[RTAX_ADVMSS-1])
- rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dst_mtu(&rt->u.dst));
+ if (!dst_metric(&rt->u.dst, RTAX_ADVMSS))
+ rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->u.dst));
rt->u.dst.dev = dev;
rt->rt6i_idev = idev;
rt->rt6i_table = table;
- cfg->fc_nlinfo.nl_net = dev->nd_net;
+ cfg->fc_nlinfo.nl_net = dev_net(dev);
return __ip6_ins_rt(rt, &cfg->fc_nlinfo);
{
int err;
struct fib6_table *table;
+ struct net *net = dev_net(rt->rt6i_dev);
- if (rt == &ip6_null_entry)
+ if (rt == net->ipv6.ip6_null_entry)
return -ENOENT;
table = rt->rt6i_table;
int ip6_del_rt(struct rt6_info *rt)
{
struct nl_info info = {
- .nl_net = &init_net,
+ .nl_net = dev_net(rt->rt6i_dev),
};
return __ip6_del_rt(rt, &info);
}
struct rt6_info *rt;
int err = -ESRCH;
- table = fib6_get_table(&init_net, cfg->fc_table);
+ table = fib6_get_table(cfg->fc_nlinfo.nl_net, cfg->fc_table);
if (table == NULL)
return err;
struct in6_addr gateway;
};
-static struct rt6_info *__ip6_route_redirect(struct fib6_table *table,
+static struct rt6_info *__ip6_route_redirect(struct net *net,
+ struct fib6_table *table,
struct flowi *fl,
int flags)
{
}
if (!rt)
- rt = &ip6_null_entry;
- BACKTRACK(&fl->fl6_src);
+ rt = net->ipv6.ip6_null_entry;
+ BACKTRACK(net, &fl->fl6_src);
out:
dst_hold(&rt->u.dst);
struct net_device *dev)
{
int flags = RT6_LOOKUP_F_HAS_SADDR;
+ struct net *net = dev_net(dev);
struct ip6rd_flowi rdfl = {
.fl = {
.oif = dev->ifindex,
},
},
},
- .gateway = *gateway,
};
+ ipv6_addr_copy(&rdfl.gateway, gateway);
+
if (rt6_need_strict(dest))
flags |= RT6_LOOKUP_F_IFACE;
- return (struct rt6_info *)fib6_rule_lookup(&init_net,
- (struct flowi *)&rdfl,
+ return (struct rt6_info *)fib6_rule_lookup(net, (struct flowi *)&rdfl,
flags, __ip6_route_redirect);
}
{
struct rt6_info *rt, *nrt = NULL;
struct netevent_redirect netevent;
+ struct net *net = dev_net(neigh->dev);
rt = ip6_route_redirect(dest, src, saddr, neigh->dev);
- if (rt == &ip6_null_entry) {
+ if (rt == net->ipv6.ip6_null_entry) {
if (net_ratelimit())
printk(KERN_DEBUG "rt6_redirect: source isn't a valid nexthop "
"for redirect target\n");
nrt->rt6i_nexthop = neigh_clone(neigh);
/* Reset pmtu, it may be better */
nrt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(neigh->dev);
- nrt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dst_mtu(&nrt->u.dst));
+ nrt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dev_net(neigh->dev),
+ dst_mtu(&nrt->u.dst));
if (ip6_ins_rt(nrt))
goto out;
struct net_device *dev, u32 pmtu)
{
struct rt6_info *rt, *nrt;
+ struct net *net = dev_net(dev);
int allfrag = 0;
- rt = rt6_lookup(dev->nd_net, daddr, saddr, dev->ifindex, 0);
+ rt = rt6_lookup(net, daddr, saddr, dev->ifindex, 0);
if (rt == NULL)
return;
rt->u.dst.metrics[RTAX_MTU-1] = pmtu;
if (allfrag)
rt->u.dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
- dst_set_expires(&rt->u.dst, init_net.ipv6.sysctl.ip6_rt_mtu_expires);
+ dst_set_expires(&rt->u.dst, net->ipv6.sysctl.ip6_rt_mtu_expires);
rt->rt6i_flags |= RTF_MODIFIED|RTF_EXPIRES;
goto out;
}
* which is 10 mins. After 10 mins the decreased pmtu is expired
* and detecting PMTU increase will be automatically happened.
*/
- dst_set_expires(&nrt->u.dst, init_net.ipv6.sysctl.ip6_rt_mtu_expires);
+ dst_set_expires(&nrt->u.dst, net->ipv6.sysctl.ip6_rt_mtu_expires);
nrt->rt6i_flags |= RTF_DYNAMIC|RTF_EXPIRES;
ip6_ins_rt(nrt);
static struct rt6_info * ip6_rt_copy(struct rt6_info *ort)
{
- struct rt6_info *rt = ip6_dst_alloc();
+ struct net *net = dev_net(ort->rt6i_dev);
+ struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
if (rt) {
rt->u.dst.input = ort->u.dst.input;
struct rt6_info *rt;
struct fib6_table *table;
- table = fib6_get_table(&init_net, RT6_TABLE_DFLT);
+ table = fib6_get_table(dev_net(dev), RT6_TABLE_DFLT);
if (table == NULL)
return NULL;
return rt;
}
-EXPORT_SYMBOL(rt6_get_dflt_router);
-
struct rt6_info *rt6_add_dflt_router(struct in6_addr *gwaddr,
struct net_device *dev,
unsigned int pref)
.fc_ifindex = dev->ifindex,
.fc_flags = RTF_GATEWAY | RTF_ADDRCONF | RTF_DEFAULT |
RTF_UP | RTF_EXPIRES | RTF_PREF(pref),
+ .fc_nlinfo.pid = 0,
+ .fc_nlinfo.nlh = NULL,
+ .fc_nlinfo.nl_net = dev_net(dev),
};
ipv6_addr_copy(&cfg.fc_gateway, gwaddr);
return rt6_get_dflt_router(gwaddr, dev);
}
-void rt6_purge_dflt_routers(void)
+void rt6_purge_dflt_routers(struct net *net)
{
struct rt6_info *rt;
struct fib6_table *table;
/* NOTE: Keep consistent with rt6_get_dflt_router */
- table = fib6_get_table(&init_net, RT6_TABLE_DFLT);
+ table = fib6_get_table(net, RT6_TABLE_DFLT);
if (table == NULL)
return;
read_unlock_bh(&table->tb6_lock);
}
-static void rtmsg_to_fib6_config(struct in6_rtmsg *rtmsg,
+static void rtmsg_to_fib6_config(struct net *net,
+ struct in6_rtmsg *rtmsg,
struct fib6_config *cfg)
{
memset(cfg, 0, sizeof(*cfg));
cfg->fc_src_len = rtmsg->rtmsg_src_len;
cfg->fc_flags = rtmsg->rtmsg_flags;
- cfg->fc_nlinfo.nl_net = &init_net;
+ cfg->fc_nlinfo.nl_net = net;
ipv6_addr_copy(&cfg->fc_dst, &rtmsg->rtmsg_dst);
ipv6_addr_copy(&cfg->fc_src, &rtmsg->rtmsg_src);
ipv6_addr_copy(&cfg->fc_gateway, &rtmsg->rtmsg_gateway);
}
-int ipv6_route_ioctl(unsigned int cmd, void __user *arg)
+int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg)
{
struct fib6_config cfg;
struct in6_rtmsg rtmsg;
if (err)
return -EFAULT;
- rtmsg_to_fib6_config(&rtmsg, &cfg);
+ rtmsg_to_fib6_config(net, &rtmsg, &cfg);
rtnl_lock();
switch (cmd) {
* Drop the packet on the floor
*/
-static int ip6_pkt_drop(struct sk_buff *skb, int code, int ipstats_mib_noroutes)
+static int ip6_pkt_drop(struct sk_buff *skb, u8 code, int ipstats_mib_noroutes)
{
int type;
+ struct dst_entry *dst = skb_dst(skb);
switch (ipstats_mib_noroutes) {
case IPSTATS_MIB_INNOROUTES:
type = ipv6_addr_type(&ipv6_hdr(skb)->daddr);
if (type == IPV6_ADDR_ANY || type == IPV6_ADDR_RESERVED) {
- IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_INADDRERRORS);
+ IP6_INC_STATS(dev_net(dst->dev), ip6_dst_idev(dst),
+ IPSTATS_MIB_INADDRERRORS);
break;
}
/* FALLTHROUGH */
case IPSTATS_MIB_OUTNOROUTES:
- IP6_INC_STATS(ip6_dst_idev(skb->dst), ipstats_mib_noroutes);
+ IP6_INC_STATS(dev_net(dst->dev), ip6_dst_idev(dst),
+ ipstats_mib_noroutes);
break;
}
icmpv6_send(skb, ICMPV6_DEST_UNREACH, code, 0, skb->dev);
static int ip6_pkt_discard_out(struct sk_buff *skb)
{
- skb->dev = skb->dst->dev;
+ skb->dev = skb_dst(skb)->dev;
return ip6_pkt_drop(skb, ICMPV6_NOROUTE, IPSTATS_MIB_OUTNOROUTES);
}
static int ip6_pkt_prohibit_out(struct sk_buff *skb)
{
- skb->dev = skb->dst->dev;
+ skb->dev = skb_dst(skb)->dev;
return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_OUTNOROUTES);
}
const struct in6_addr *addr,
int anycast)
{
- struct rt6_info *rt = ip6_dst_alloc();
+ struct net *net = dev_net(idev->dev);
+ struct rt6_info *rt = ip6_dst_alloc(&net->ipv6.ip6_dst_ops);
+ struct neighbour *neigh;
if (rt == NULL)
return ERR_PTR(-ENOMEM);
- dev_hold(init_net.loopback_dev);
+ dev_hold(net->loopback_dev);
in6_dev_hold(idev);
rt->u.dst.flags = DST_HOST;
rt->u.dst.input = ip6_input;
rt->u.dst.output = ip6_output;
- rt->rt6i_dev = init_net.loopback_dev;
+ rt->rt6i_dev = net->loopback_dev;
rt->rt6i_idev = idev;
rt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
- rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dst_mtu(&rt->u.dst));
+ rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->u.dst));
rt->u.dst.metrics[RTAX_HOPLIMIT-1] = -1;
rt->u.dst.obsolete = -1;
rt->rt6i_flags |= RTF_ANYCAST;
else
rt->rt6i_flags |= RTF_LOCAL;
- rt->rt6i_nexthop = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway);
- if (rt->rt6i_nexthop == NULL) {
+ neigh = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway);
+ if (IS_ERR(neigh)) {
dst_free(&rt->u.dst);
- return ERR_PTR(-ENOMEM);
+
+ /* We are casting this because that is the return
+ * value type. But an errno encoded pointer is the
+ * same regardless of the underlying pointer type,
+ * and that's what we are returning. So this is OK.
+ */
+ return (struct rt6_info *) neigh;
}
+ rt->rt6i_nexthop = neigh;
ipv6_addr_copy(&rt->rt6i_dst.addr, addr);
rt->rt6i_dst.plen = 128;
- rt->rt6i_table = fib6_get_table(&init_net, RT6_TABLE_LOCAL);
+ rt->rt6i_table = fib6_get_table(net, RT6_TABLE_LOCAL);
atomic_set(&rt->u.dst.__refcnt, 1);
return rt;
}
+struct arg_dev_net {
+ struct net_device *dev;
+ struct net *net;
+};
+
static int fib6_ifdown(struct rt6_info *rt, void *arg)
{
- if (((void*)rt->rt6i_dev == arg || arg == NULL) &&
- rt != &ip6_null_entry) {
+ struct net_device *dev = ((struct arg_dev_net *)arg)->dev;
+ struct net *net = ((struct arg_dev_net *)arg)->net;
+
+ if (((void *)rt->rt6i_dev == dev || dev == NULL) &&
+ rt != net->ipv6.ip6_null_entry) {
RT6_TRACE("deleted by ifdown %p\n", rt);
return -1;
}
void rt6_ifdown(struct net *net, struct net_device *dev)
{
- fib6_clean_all(net, fib6_ifdown, 0, dev);
+ struct arg_dev_net adn = {
+ .dev = dev,
+ .net = net,
+ };
+
+ fib6_clean_all(net, fib6_ifdown, 0, &adn);
+ icmp6_clean_all(fib6_ifdown, &adn);
}
struct rt6_mtu_change_arg
{
struct rt6_mtu_change_arg *arg = (struct rt6_mtu_change_arg *) p_arg;
struct inet6_dev *idev;
+ struct net *net = dev_net(arg->dev);
/* In IPv6 pmtu discovery is not optional,
so that RTAX_MTU lock cannot disable it.
(dst_mtu(&rt->u.dst) < arg->mtu &&
dst_mtu(&rt->u.dst) == idev->cnf.mtu6))) {
rt->u.dst.metrics[RTAX_MTU-1] = arg->mtu;
- rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(arg->mtu);
+ rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, arg->mtu);
}
return 0;
}
.mtu = mtu,
};
- fib6_clean_all(dev->nd_net, rt6_mtu_change_route, 0, &arg);
+ fib6_clean_all(dev_net(dev), rt6_mtu_change_route, 0, &arg);
}
static const struct nla_policy rtm_ipv6_policy[RTA_MAX+1] = {
cfg->fc_nlinfo.pid = NETLINK_CB(skb).pid;
cfg->fc_nlinfo.nlh = nlh;
- cfg->fc_nlinfo.nl_net = skb->sk->sk_net;
+ cfg->fc_nlinfo.nl_net = sock_net(skb->sk);
if (tb[RTA_GATEWAY]) {
nla_memcpy(&cfg->fc_gateway, tb[RTA_GATEWAY], 16);
static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
{
- struct net *net = skb->sk->sk_net;
struct fib6_config cfg;
int err;
- if (net != &init_net)
- return -EINVAL;
-
err = rtm_to_fib6_config(skb, nlh, &cfg);
if (err < 0)
return err;
static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
{
- struct net *net = skb->sk->sk_net;
struct fib6_config cfg;
int err;
- if (net != &init_net)
- return -EINVAL;
-
err = rtm_to_fib6_config(skb, nlh, &cfg);
if (err < 0)
return err;
+ nla_total_size(sizeof(struct rta_cacheinfo));
}
-static int rt6_fill_node(struct sk_buff *skb, struct rt6_info *rt,
+static int rt6_fill_node(struct net *net,
+ struct sk_buff *skb, struct rt6_info *rt,
struct in6_addr *dst, struct in6_addr *src,
int iif, int type, u32 pid, u32 seq,
- int prefix, unsigned int flags)
+ int prefix, int nowait, unsigned int flags)
{
struct rtmsg *rtm;
struct nlmsghdr *nlh;
} else if (rtm->rtm_src_len)
NLA_PUT(skb, RTA_SRC, 16, &rt->rt6i_src.addr);
#endif
- if (iif)
- NLA_PUT_U32(skb, RTA_IIF, iif);
- else if (dst) {
+ if (iif) {
+#ifdef CONFIG_IPV6_MROUTE
+ if (ipv6_addr_is_multicast(&rt->rt6i_dst.addr)) {
+ int err = ip6mr_get_route(net, skb, rtm, nowait);
+ if (err <= 0) {
+ if (!nowait) {
+ if (err == 0)
+ return 0;
+ goto nla_put_failure;
+ } else {
+ if (err == -EMSGSIZE)
+ goto nla_put_failure;
+ }
+ }
+ } else
+#endif
+ NLA_PUT_U32(skb, RTA_IIF, iif);
+ } else if (dst) {
+ struct inet6_dev *idev = ip6_dst_idev(&rt->u.dst);
struct in6_addr saddr_buf;
- if (ipv6_dev_get_saddr(ip6_dst_idev(&rt->u.dst)->dev,
- dst, &saddr_buf) == 0)
+ if (ipv6_dev_get_saddr(net, idev ? idev->dev : NULL,
+ dst, 0, &saddr_buf) == 0)
NLA_PUT(skb, RTA_PREFSRC, 16, &saddr_buf);
}
NLA_PUT_U32(skb, RTA_PRIORITY, rt->rt6i_metric);
- expires = rt->rt6i_expires ? rt->rt6i_expires - jiffies : 0;
+ if (!(rt->rt6i_flags & RTF_EXPIRES))
+ expires = 0;
+ else if (rt->rt6i_expires - jiffies < INT_MAX)
+ expires = rt->rt6i_expires - jiffies;
+ else
+ expires = INT_MAX;
+
if (rtnl_put_cacheinfo(skb, &rt->u.dst, 0, 0, 0,
expires, rt->u.dst.error) < 0)
goto nla_put_failure;
} else
prefix = 0;
- return rt6_fill_node(arg->skb, rt, NULL, NULL, 0, RTM_NEWROUTE,
+ return rt6_fill_node(arg->net,
+ arg->skb, rt, NULL, NULL, 0, RTM_NEWROUTE,
NETLINK_CB(arg->cb->skb).pid, arg->cb->nlh->nlmsg_seq,
- prefix, NLM_F_MULTI);
+ prefix, 0, NLM_F_MULTI);
}
static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg)
{
- struct net *net = in_skb->sk->sk_net;
+ struct net *net = sock_net(in_skb->sk);
struct nlattr *tb[RTA_MAX+1];
struct rt6_info *rt;
struct sk_buff *skb;
struct flowi fl;
int err, iif = 0;
- if (net != &init_net)
- return -EINVAL;
-
err = nlmsg_parse(nlh, sizeof(*rtm), tb, RTA_MAX, rtm_ipv6_policy);
if (err < 0)
goto errout;
if (iif) {
struct net_device *dev;
- dev = __dev_get_by_index(&init_net, iif);
+ dev = __dev_get_by_index(net, iif);
if (!dev) {
err = -ENODEV;
goto errout;
skb_reset_mac_header(skb);
skb_reserve(skb, MAX_HEADER + sizeof(struct ipv6hdr));
- rt = (struct rt6_info*) ip6_route_output(NULL, &fl);
- skb->dst = &rt->u.dst;
+ rt = (struct rt6_info*) ip6_route_output(net, NULL, &fl);
+ skb_dst_set(skb, &rt->u.dst);
- err = rt6_fill_node(skb, rt, &fl.fl6_dst, &fl.fl6_src, iif,
+ err = rt6_fill_node(net, skb, rt, &fl.fl6_dst, &fl.fl6_src, iif,
RTM_NEWROUTE, NETLINK_CB(in_skb).pid,
- nlh->nlmsg_seq, 0, 0);
+ nlh->nlmsg_seq, 0, 0, 0);
if (err < 0) {
kfree_skb(skb);
goto errout;
}
- err = rtnl_unicast(skb, &init_net, NETLINK_CB(in_skb).pid);
+ err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).pid);
errout:
return err;
}
void inet6_rt_notify(int event, struct rt6_info *rt, struct nl_info *info)
{
struct sk_buff *skb;
+ struct net *net = info->nl_net;
u32 seq;
int err;
if (skb == NULL)
goto errout;
- err = rt6_fill_node(skb, rt, NULL, NULL, 0,
- event, info->pid, seq, 0, 0);
+ err = rt6_fill_node(net, skb, rt, NULL, NULL, 0,
+ event, info->pid, seq, 0, 0, 0);
if (err < 0) {
/* -EMSGSIZE implies BUG in rt6_nlmsg_size() */
WARN_ON(err == -EMSGSIZE);
kfree_skb(skb);
goto errout;
}
- err = rtnl_notify(skb, &init_net, info->pid,
- RTNLGRP_IPV6_ROUTE, info->nlh, gfp_any());
+ rtnl_notify(skb, net, info->pid, RTNLGRP_IPV6_ROUTE,
+ info->nlh, gfp_any());
+ return;
errout:
if (err < 0)
- rtnl_set_sk_err(&init_net, RTNLGRP_IPV6_ROUTE, err);
+ rtnl_set_sk_err(net, RTNLGRP_IPV6_ROUTE, err);
+}
+
+static int ip6_route_dev_notify(struct notifier_block *this,
+ unsigned long event, void *data)
+{
+ struct net_device *dev = (struct net_device *)data;
+ struct net *net = dev_net(dev);
+
+ if (event == NETDEV_REGISTER && (dev->flags & IFF_LOOPBACK)) {
+ net->ipv6.ip6_null_entry->u.dst.dev = dev;
+ net->ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(dev);
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+ net->ipv6.ip6_prohibit_entry->u.dst.dev = dev;
+ net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev);
+ net->ipv6.ip6_blk_hole_entry->u.dst.dev = dev;
+ net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev);
+#endif
+ }
+
+ return NOTIFY_OK;
}
/*
{
struct seq_file *m = p_arg;
- seq_printf(m, NIP6_SEQFMT " %02x ", NIP6(rt->rt6i_dst.addr),
- rt->rt6i_dst.plen);
+ seq_printf(m, "%pi6 %02x ", &rt->rt6i_dst.addr, rt->rt6i_dst.plen);
#ifdef CONFIG_IPV6_SUBTREES
- seq_printf(m, NIP6_SEQFMT " %02x ", NIP6(rt->rt6i_src.addr),
- rt->rt6i_src.plen);
+ seq_printf(m, "%pi6 %02x ", &rt->rt6i_src.addr, rt->rt6i_src.plen);
#else
seq_puts(m, "00000000000000000000000000000000 00 ");
#endif
if (rt->rt6i_nexthop) {
- seq_printf(m, NIP6_SEQFMT,
- NIP6(*((struct in6_addr *)rt->rt6i_nexthop->primary_key)));
+ seq_printf(m, "%pi6", rt->rt6i_nexthop->primary_key);
} else {
seq_puts(m, "00000000000000000000000000000000");
}
static int ipv6_route_open(struct inode *inode, struct file *file)
{
- struct net *net = get_proc_net(inode);
- if (!net)
- return -ENXIO;
- return single_open(file, ipv6_route_show, net);
-}
-
-static int ipv6_route_release(struct inode *inode, struct file *file)
-{
- struct seq_file *seq = file->private_data;
- struct net *net = seq->private;
- put_net(net);
- return single_release(inode, file);
+ return single_open_net(inode, file, ipv6_route_show);
}
static const struct file_operations ipv6_route_proc_fops = {
.open = ipv6_route_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = ipv6_route_release,
+ .release = single_release_net,
};
static int rt6_stats_seq_show(struct seq_file *seq, void *v)
net->ipv6.rt6_stats->fib_rt_alloc,
net->ipv6.rt6_stats->fib_rt_entries,
net->ipv6.rt6_stats->fib_rt_cache,
- atomic_read(&ip6_dst_ops.entries),
+ atomic_read(&net->ipv6.ip6_dst_ops.entries),
net->ipv6.rt6_stats->fib_discarded_routes);
return 0;
static int rt6_stats_seq_open(struct inode *inode, struct file *file)
{
- struct net *net = get_proc_net(inode);
- return single_open(file, rt6_stats_seq_show, net);
-}
-
-static int rt6_stats_seq_release(struct inode *inode, struct file *file)
-{
- struct seq_file *seq = file->private_data;
- struct net *net = (struct net *)seq->private;
- put_net(net);
- return single_release(inode, file);
+ return single_open_net(inode, file, rt6_stats_seq_show);
}
static const struct file_operations rt6_stats_seq_fops = {
.open = rt6_stats_seq_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = rt6_stats_seq_release,
+ .release = single_release_net,
};
#endif /* CONFIG_PROC_FS */
#ifdef CONFIG_SYSCTL
static
-int ipv6_sysctl_rtcache_flush(ctl_table *ctl, int write, struct file * filp,
+int ipv6_sysctl_rtcache_flush(ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
struct net *net = current->nsproxy->net_ns;
int delay = net->ipv6.sysctl.flush_delay;
if (write) {
- proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
+ proc_dointvec(ctl, write, buffer, lenp, ppos);
fib6_run_gc(delay <= 0 ? ~0UL : (unsigned long)delay, net);
return 0;
} else
.data = &init_net.ipv6.sysctl.flush_delay,
.maxlen = sizeof(int),
.mode = 0200,
- .proc_handler = &ipv6_sysctl_rtcache_flush
+ .proc_handler = ipv6_sysctl_rtcache_flush
},
{
- .ctl_name = NET_IPV6_ROUTE_GC_THRESH,
.procname = "gc_thresh",
- .data = &ip6_dst_ops.gc_thresh,
+ .data = &ip6_dst_ops_template.gc_thresh,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_IPV6_ROUTE_MAX_SIZE,
.procname = "max_size",
.data = &init_net.ipv6.sysctl.ip6_rt_max_size,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = NET_IPV6_ROUTE_GC_MIN_INTERVAL,
.procname = "gc_min_interval",
.data = &init_net.ipv6.sysctl.ip6_rt_gc_min_interval,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
},
{
- .ctl_name = NET_IPV6_ROUTE_GC_TIMEOUT,
.procname = "gc_timeout",
.data = &init_net.ipv6.sysctl.ip6_rt_gc_timeout,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
},
{
- .ctl_name = NET_IPV6_ROUTE_GC_INTERVAL,
.procname = "gc_interval",
.data = &init_net.ipv6.sysctl.ip6_rt_gc_interval,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
},
{
- .ctl_name = NET_IPV6_ROUTE_GC_ELASTICITY,
.procname = "gc_elasticity",
.data = &init_net.ipv6.sysctl.ip6_rt_gc_elasticity,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
},
{
- .ctl_name = NET_IPV6_ROUTE_MTU_EXPIRES,
.procname = "mtu_expires",
.data = &init_net.ipv6.sysctl.ip6_rt_mtu_expires,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
},
{
- .ctl_name = NET_IPV6_ROUTE_MIN_ADVMSS,
.procname = "min_adv_mss",
.data = &init_net.ipv6.sysctl.ip6_rt_min_advmss,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_jiffies,
- .strategy = &sysctl_jiffies,
+ .proc_handler = proc_dointvec_jiffies,
},
{
- .ctl_name = NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS,
.procname = "gc_min_interval_ms",
.data = &init_net.ipv6.sysctl.ip6_rt_gc_min_interval,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec_ms_jiffies,
- .strategy = &sysctl_ms_jiffies,
+ .proc_handler = proc_dointvec_ms_jiffies,
},
- { .ctl_name = 0 }
+ { }
};
-struct ctl_table *ipv6_route_sysctl_init(struct net *net)
+struct ctl_table * __net_init ipv6_route_sysctl_init(struct net *net)
{
struct ctl_table *table;
if (table) {
table[0].data = &net->ipv6.sysctl.flush_delay;
- /* table[1].data will be handled when we have
- routes per namespace */
+ table[1].data = &net->ipv6.ip6_dst_ops.gc_thresh;
table[2].data = &net->ipv6.sysctl.ip6_rt_max_size;
table[3].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval;
table[4].data = &net->ipv6.sysctl.ip6_rt_gc_timeout;
table[6].data = &net->ipv6.sysctl.ip6_rt_gc_elasticity;
table[7].data = &net->ipv6.sysctl.ip6_rt_mtu_expires;
table[8].data = &net->ipv6.sysctl.ip6_rt_min_advmss;
+ table[9].data = &net->ipv6.sysctl.ip6_rt_gc_min_interval;
}
return table;
}
#endif
-static int ip6_route_net_init(struct net *net)
+static int __net_init ip6_route_net_init(struct net *net)
{
+ int ret = -ENOMEM;
+
+ memcpy(&net->ipv6.ip6_dst_ops, &ip6_dst_ops_template,
+ sizeof(net->ipv6.ip6_dst_ops));
+
+ net->ipv6.ip6_null_entry = kmemdup(&ip6_null_entry_template,
+ sizeof(*net->ipv6.ip6_null_entry),
+ GFP_KERNEL);
+ if (!net->ipv6.ip6_null_entry)
+ goto out_ip6_dst_ops;
+ net->ipv6.ip6_null_entry->u.dst.path =
+ (struct dst_entry *)net->ipv6.ip6_null_entry;
+ net->ipv6.ip6_null_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
+
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+ net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
+ sizeof(*net->ipv6.ip6_prohibit_entry),
+ GFP_KERNEL);
+ if (!net->ipv6.ip6_prohibit_entry)
+ goto out_ip6_null_entry;
+ net->ipv6.ip6_prohibit_entry->u.dst.path =
+ (struct dst_entry *)net->ipv6.ip6_prohibit_entry;
+ net->ipv6.ip6_prohibit_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
+
+ net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
+ sizeof(*net->ipv6.ip6_blk_hole_entry),
+ GFP_KERNEL);
+ if (!net->ipv6.ip6_blk_hole_entry)
+ goto out_ip6_prohibit_entry;
+ net->ipv6.ip6_blk_hole_entry->u.dst.path =
+ (struct dst_entry *)net->ipv6.ip6_blk_hole_entry;
+ net->ipv6.ip6_blk_hole_entry->u.dst.ops = &net->ipv6.ip6_dst_ops;
+#endif
+
+ net->ipv6.sysctl.flush_delay = 0;
+ net->ipv6.sysctl.ip6_rt_max_size = 4096;
+ net->ipv6.sysctl.ip6_rt_gc_min_interval = HZ / 2;
+ net->ipv6.sysctl.ip6_rt_gc_timeout = 60*HZ;
+ net->ipv6.sysctl.ip6_rt_gc_interval = 30*HZ;
+ net->ipv6.sysctl.ip6_rt_gc_elasticity = 9;
+ net->ipv6.sysctl.ip6_rt_mtu_expires = 10*60*HZ;
+ net->ipv6.sysctl.ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40;
+
#ifdef CONFIG_PROC_FS
proc_net_fops_create(net, "ipv6_route", 0, &ipv6_route_proc_fops);
proc_net_fops_create(net, "rt6_stats", S_IRUGO, &rt6_stats_seq_fops);
#endif
- return 0;
+ net->ipv6.ip6_rt_gc_expire = 30*HZ;
+
+ ret = 0;
+out:
+ return ret;
+
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+out_ip6_prohibit_entry:
+ kfree(net->ipv6.ip6_prohibit_entry);
+out_ip6_null_entry:
+ kfree(net->ipv6.ip6_null_entry);
+#endif
+out_ip6_dst_ops:
+ goto out;
}
-static void ip6_route_net_exit(struct net *net)
+static void __net_exit ip6_route_net_exit(struct net *net)
{
#ifdef CONFIG_PROC_FS
proc_net_remove(net, "ipv6_route");
proc_net_remove(net, "rt6_stats");
#endif
+ kfree(net->ipv6.ip6_null_entry);
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+ kfree(net->ipv6.ip6_prohibit_entry);
+ kfree(net->ipv6.ip6_blk_hole_entry);
+#endif
}
static struct pernet_operations ip6_route_net_ops = {
.exit = ip6_route_net_exit,
};
+static struct notifier_block ip6_route_dev_notifier = {
+ .notifier_call = ip6_route_dev_notify,
+ .priority = 0,
+};
+
int __init ip6_route_init(void)
{
int ret;
- ip6_dst_ops.kmem_cachep =
+ ret = -ENOMEM;
+ ip6_dst_ops_template.kmem_cachep =
kmem_cache_create("ip6_dst_cache", sizeof(struct rt6_info), 0,
SLAB_HWCACHE_ALIGN, NULL);
- if (!ip6_dst_ops.kmem_cachep)
- return -ENOMEM;
+ if (!ip6_dst_ops_template.kmem_cachep)
+ goto out;
- ip6_dst_blackhole_ops.kmem_cachep = ip6_dst_ops.kmem_cachep;
+ ret = register_pernet_subsys(&ip6_route_net_ops);
+ if (ret)
+ goto out_kmem_cache;
+ ip6_dst_blackhole_ops.kmem_cachep = ip6_dst_ops_template.kmem_cachep;
+
+ /* Registering of the loopback is done before this portion of code,
+ * the loopback reference in rt6_info will not be taken, do it
+ * manually for init_net */
+ init_net.ipv6.ip6_null_entry->u.dst.dev = init_net.loopback_dev;
+ init_net.ipv6.ip6_null_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
+ #ifdef CONFIG_IPV6_MULTIPLE_TABLES
+ init_net.ipv6.ip6_prohibit_entry->u.dst.dev = init_net.loopback_dev;
+ init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
+ init_net.ipv6.ip6_blk_hole_entry->u.dst.dev = init_net.loopback_dev;
+ init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
+ #endif
ret = fib6_init();
if (ret)
- goto out_kmem_cache;
+ goto out_register_subsys;
ret = xfrm6_init();
if (ret)
__rtnl_register(PF_INET6, RTM_GETROUTE, inet6_rtm_getroute, NULL))
goto fib6_rules_init;
- ret = register_pernet_subsys(&ip6_route_net_ops);
+ ret = register_netdevice_notifier(&ip6_route_dev_notifier);
if (ret)
goto fib6_rules_init;
+
out:
return ret;
xfrm6_init:
xfrm6_fini();
out_fib6_init:
- rt6_ifdown(&init_net, NULL);
fib6_gc_cleanup();
+out_register_subsys:
+ unregister_pernet_subsys(&ip6_route_net_ops);
out_kmem_cache:
- kmem_cache_destroy(ip6_dst_ops.kmem_cachep);
+ kmem_cache_destroy(ip6_dst_ops_template.kmem_cachep);
goto out;
}
void ip6_route_cleanup(void)
{
- unregister_pernet_subsys(&ip6_route_net_ops);
+ unregister_netdevice_notifier(&ip6_route_dev_notifier);
fib6_rules_cleanup();
xfrm6_fini();
- rt6_ifdown(&init_net, NULL);
fib6_gc_cleanup();
- kmem_cache_destroy(ip6_dst_ops.kmem_cachep);
+ unregister_pernet_subsys(&ip6_route_net_ops);
+ kmem_cache_destroy(ip6_dst_ops_template.kmem_cachep);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff