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net/ipv6: Move support functions up in route.c

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Code move only.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2018-04-17 17:33:12 -07:00 committed by David S. Miller
parent afb1d4b593
commit ae90d867f9
1 changed files with 59 additions and 60 deletions
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119
net/ipv6/route.c
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@ -78,7 +78,6 @@ enum rt6_nud_state {
RT6_NUD_SUCCEED = 1 RT6_NUD_SUCCEED = 1
}; };
static void ip6_rt_copy_init(struct rt6_info *rt, struct rt6_info *ort);
static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie); static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie);
static unsigned int ip6_default_advmss(const struct dst_entry *dst); static unsigned int ip6_default_advmss(const struct dst_entry *dst);
static unsigned int ip6_mtu(const struct dst_entry *dst); static unsigned int ip6_mtu(const struct dst_entry *dst);
@ -879,6 +878,65 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
} }
#endif #endif
/*
* Misc support functions
*/
/* called with rcu_lock held */
static struct net_device *ip6_rt_get_dev_rcu(struct rt6_info *rt)
{
struct net_device *dev = rt->dst.dev;
if (rt->rt6i_flags & (RTF_LOCAL | RTF_ANYCAST)) {
/* for copies of local routes, dst->dev needs to be the
* device if it is a master device, the master device if
* device is enslaved, and the loopback as the default
*/
if (netif_is_l3_slave(dev) &&
!rt6_need_strict(&rt->rt6i_dst.addr))
dev = l3mdev_master_dev_rcu(dev);
else if (!netif_is_l3_master(dev))
dev = dev_net(dev)->loopback_dev;
/* last case is netif_is_l3_master(dev) is true in which
* case we want dev returned to be dev
*/
}
return dev;
}
static void rt6_set_from(struct rt6_info *rt, struct rt6_info *from)
{
BUG_ON(from->from);
rt->rt6i_flags &= ~RTF_EXPIRES;
dst_hold(&from->dst);
rt->from = from;
dst_init_metrics(&rt->dst, dst_metrics_ptr(&from->dst), true);
}
static void ip6_rt_copy_init(struct rt6_info *rt, struct rt6_info *ort)
{
rt->dst.input = ort->dst.input;
rt->dst.output = ort->dst.output;
rt->rt6i_dst = ort->rt6i_dst;
rt->dst.error = ort->dst.error;
rt->rt6i_idev = ort->rt6i_idev;
if (rt->rt6i_idev)
in6_dev_hold(rt->rt6i_idev);
rt->dst.lastuse = jiffies;
rt->rt6i_gateway = ort->rt6i_gateway;
rt->rt6i_flags = ort->rt6i_flags;
rt6_set_from(rt, ort);
rt->rt6i_metric = ort->rt6i_metric;
#ifdef CONFIG_IPV6_SUBTREES
rt->rt6i_src = ort->rt6i_src;
#endif
rt->rt6i_prefsrc = ort->rt6i_prefsrc;
rt->rt6i_table = ort->rt6i_table;
rt->dst.lwtstate = lwtstate_get(ort->dst.lwtstate);
}
static struct fib6_node* fib6_backtrack(struct fib6_node *fn, static struct fib6_node* fib6_backtrack(struct fib6_node *fn,
struct in6_addr *saddr) struct in6_addr *saddr)
{ {
@ -1024,29 +1082,6 @@ int ip6_ins_rt(struct net *net, struct rt6_info *rt)
return __ip6_ins_rt(rt, &info, &mxc, NULL); return __ip6_ins_rt(rt, &info, &mxc, NULL);
} }
/* called with rcu_lock held */
static struct net_device *ip6_rt_get_dev_rcu(struct rt6_info *rt)
{
struct net_device *dev = rt->dst.dev;
if (rt->rt6i_flags & (RTF_LOCAL | RTF_ANYCAST)) {
/* for copies of local routes, dst->dev needs to be the
* device if it is a master device, the master device if
* device is enslaved, and the loopback as the default
*/
if (netif_is_l3_slave(dev) &&
!rt6_need_strict(&rt->rt6i_dst.addr))
dev = l3mdev_master_dev_rcu(dev);
else if (!netif_is_l3_master(dev))
dev = dev_net(dev)->loopback_dev;
/* last case is netif_is_l3_master(dev) is true in which
* case we want dev returned to be dev
*/
}
return dev;
}
static struct rt6_info *ip6_rt_cache_alloc(struct rt6_info *ort, static struct rt6_info *ip6_rt_cache_alloc(struct rt6_info *ort,
const struct in6_addr *daddr, const struct in6_addr *daddr,
const struct in6_addr *saddr) const struct in6_addr *saddr)
@ -3270,42 +3305,6 @@ static void rt6_do_redirect(struct dst_entry *dst, struct sock *sk, struct sk_bu
neigh_release(neigh); neigh_release(neigh);
} }
/*
* Misc support functions
*/
static void rt6_set_from(struct rt6_info *rt, struct rt6_info *from)
{
BUG_ON(from->from);
rt->rt6i_flags &= ~RTF_EXPIRES;
dst_hold(&from->dst);
rt->from = from;
dst_init_metrics(&rt->dst, dst_metrics_ptr(&from->dst), true);
}
static void ip6_rt_copy_init(struct rt6_info *rt, struct rt6_info *ort)
{
rt->dst.input = ort->dst.input;
rt->dst.output = ort->dst.output;
rt->rt6i_dst = ort->rt6i_dst;
rt->dst.error = ort->dst.error;
rt->rt6i_idev = ort->rt6i_idev;
if (rt->rt6i_idev)
in6_dev_hold(rt->rt6i_idev);
rt->dst.lastuse = jiffies;
rt->rt6i_gateway = ort->rt6i_gateway;
rt->rt6i_flags = ort->rt6i_flags;
rt6_set_from(rt, ort);
rt->rt6i_metric = ort->rt6i_metric;
#ifdef CONFIG_IPV6_SUBTREES
rt->rt6i_src = ort->rt6i_src;
#endif
rt->rt6i_prefsrc = ort->rt6i_prefsrc;
rt->rt6i_table = ort->rt6i_table;
rt->dst.lwtstate = lwtstate_get(ort->dst.lwtstate);
}
#ifdef CONFIG_IPV6_ROUTE_INFO #ifdef CONFIG_IPV6_ROUTE_INFO
static struct rt6_info *rt6_get_route_info(struct net *net, static struct rt6_info *rt6_get_route_info(struct net *net,
const struct in6_addr *prefix, int prefixlen, const struct in6_addr *prefix, int prefixlen,