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ipv6: make ip6_dst_mtu_forward inline 

Just like ip_dst_mtu_maybe_forward(), to avoid a dependency with ipv6.ko.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Felix Fietkau 2018-02-26 10:15:10 +01:00 committed by Pablo Neira Ayuso
parent 047b300e6e
commit 07cb9623ee
3 changed files with 21 additions and 24 deletions
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21
include/net/ip6_route.h
View File

@ -279,6 +279,27 @@ static inline bool rt6_duplicate_nexthop(struct fib6_info *a, struct fib6_info *
!lwtunnel_cmp_encap(a->fib6_nh.nh_lwtstate, b->fib6_nh.nh_lwtstate);
}
static inline unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst)
{
struct inet6_dev *idev;
unsigned int mtu;
if (dst_metric_locked(dst, RTAX_MTU)) {
mtu = dst_metric_raw(dst, RTAX_MTU);
if (mtu)
return mtu;
}
mtu = IPV6_MIN_MTU;
rcu_read_lock();
idev = __in6_dev_get(dst->dev);
if (idev)
mtu = idev->cnf.mtu6;
rcu_read_unlock();
return mtu;
}
struct neighbour *ip6_neigh_lookup(const struct in6_addr *gw,
struct net_device *dev, struct sk_buff *skb,
const void *daddr);

2
include/net/ipv6.h
View File

@ -958,8 +958,6 @@ static inline struct sk_buff *ip6_finish_skb(struct sock *sk)
&inet6_sk(sk)->cork);
}
unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst);
int ip6_dst_lookup(struct net *net, struct sock *sk, struct dst_entry **dst,
struct flowi6 *fl6);
struct dst_entry *ip6_dst_lookup_flow(const struct sock *sk, struct flowi6 *fl6,

22
net/ipv6/ip6_output.c
View File

@ -383,28 +383,6 @@ static inline int ip6_forward_finish(struct net *net, struct sock *sk,
return dst_output(net, sk, skb);
}
unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst)
{
unsigned int mtu;
struct inet6_dev *idev;
if (dst_metric_locked(dst, RTAX_MTU)) {
mtu = dst_metric_raw(dst, RTAX_MTU);
if (mtu)
return mtu;
}
mtu = IPV6_MIN_MTU;
rcu_read_lock();
idev = __in6_dev_get(dst->dev);
if (idev)
mtu = idev->cnf.mtu6;
rcu_read_unlock();
return mtu;
}
EXPORT_SYMBOL_GPL(ip6_dst_mtu_forward);
static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu)
{
if (skb->len <= mtu)