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OpenCloudOS-Kernel
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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: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang 2013-08-31 13:44:28 +08:00 committed by David S. Miller
parent ae5dbf1ad8
commit 3ce9b35ff6
4 changed files with 24 additions and 21 deletions
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2
include/net/ip6_route.h
View File

@ -112,8 +112,6 @@ extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
const struct in6_addr *addr, const struct in6_addr *addr,
bool anycast); bool anycast);
extern int ip6_dst_hoplimit(struct dst_entry *dst);
/* /*
* support functions for ND * support functions for ND
* *

2
include/net/ipv6.h
View File

@ -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 void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt);
extern int ip6_dst_hoplimit(struct dst_entry *dst);
/* /*
* Header manipulation * Header manipulation
*/ */

22
net/ipv6/output_core.c
View File

@ -5,6 +5,7 @@
#include <linux/export.h> #include <linux/export.h>
#include <net/ipv6.h> #include <net/ipv6.h>
#include <net/ip6_fib.h> #include <net/ip6_fib.h>
#include <net/addrconf.h>
void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt) 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; return offset;
} }
EXPORT_SYMBOL(ip6_find_1stfragopt); 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

19
net/ipv6/route.c
View File

@ -1354,25 +1354,6 @@ out:
return entries > rt_max_size; 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);
/* /*
* *
*/ */