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Commit 3ce9b35f authored by Cong Wang's avatar Cong Wang Committed by David S. Miller
Browse files

ipv6: move ip6_dst_hoplimit() into core kernel 



It will be used by vxlan, and may not be inlined.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarCong Wang <amwang@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ae5dbf1a

include/net/ip6_route.h

+0 −2
Original line number Diff line number Diff line
@@ -112,8 +112,6 @@ extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev, 
					   const struct in6_addr *addr,

					   bool anycast);



extern int			ip6_dst_hoplimit(struct dst_entry *dst);



/*

 *	support functions for ND

 *

include/net/ipv6.h

+2 −0
Original line number Diff line number Diff line
@@ -658,6 +658,8 @@ static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_add 


extern void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt);



extern int ip6_dst_hoplimit(struct dst_entry *dst);



/*

 *	Header manipulation

 */

net/ipv6/output_core.c

+22 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
#include <linux/export.h>

#include <net/ipv6.h>

#include <net/ip6_fib.h>

#include <net/addrconf.h>



void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)

{
@@ -75,3 +76,24 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr) 
	return offset;

}

EXPORT_SYMBOL(ip6_find_1stfragopt);



#if IS_ENABLED(CONFIG_IPV6)

int ip6_dst_hoplimit(struct dst_entry *dst)

{

	int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT);

	if (hoplimit == 0) {

		struct net_device *dev = dst->dev;

		struct inet6_dev *idev;



		rcu_read_lock();

		idev = __in6_dev_get(dev);

		if (idev)

			hoplimit = idev->cnf.hop_limit;

		else

			hoplimit = dev_net(dev)->ipv6.devconf_all->hop_limit;

		rcu_read_unlock();

	}

	return hoplimit;

}

EXPORT_SYMBOL(ip6_dst_hoplimit);

#endif

net/ipv6/route.c

+0 −19
Original line number Diff line number Diff line
@@ -1354,25 +1354,6 @@ static int ip6_dst_gc(struct dst_ops *ops) 
	return entries > rt_max_size;

}



int ip6_dst_hoplimit(struct dst_entry *dst)

{

	int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT);

	if (hoplimit == 0) {

		struct net_device *dev = dst->dev;

		struct inet6_dev *idev;



		rcu_read_lock();

		idev = __in6_dev_get(dev);

		if (idev)

			hoplimit = idev->cnf.hop_limit;

		else

			hoplimit = dev_net(dev)->ipv6.devconf_all->hop_limit;

		rcu_read_unlock();

	}

	return hoplimit;

}

EXPORT_SYMBOL(ip6_dst_hoplimit);



/*

 *

 */