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net/ipv6: separate handling of FIB entries from dst based routes

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Last step before flipping the data type for FIB entries:
- use fib6_info_alloc to create FIB entries in ip6_route_info_create
  and addrconf_dst_alloc
- use fib6_info_release in place of dst_release, ip6_rt_put and
  rt6_release
- remove the dst_hold before calling __ip6_ins_rt or ip6_del_rt
- when purging routes, drop per-cpu routes
- replace inc and dec of rt6i_ref with fib6_info_hold and fib6_info_release
- use rt->from since it points to the FIB entry
- drop references to exception bucket, fib6_metrics and per-cpu from
  dst entries (those are relevant for fib entries only)

Signed-off-by: David Ahern <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
David Ahern 2018-04-17 17:33:25 -07:00 • committed by David S. Miller
commit 93531c6743
8 changed files with 115 additions and 152 deletions
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4
include/net/ip6_fib.h
View file

@ -314,9 +314,7 @@ static inline u32 rt6_get_cookie(const struct rt6_info *rt)
if (rt->rt6i_flags & RTF_PCPU ||
(unlikely(!list_empty(&rt->rt6i_uncached)) && rt->from))
rt = rt->from;
rt6_get_cookie_safe(rt, &cookie);
rt6_get_cookie_safe(rt->from, &cookie);
return cookie;
}

3
include/net/ip6_route.h
View file

@ -114,8 +114,7 @@ static inline int ip6_route_get_saddr(struct net *net, struct rt6_info *rt,
unsigned int prefs,
struct in6_addr *saddr)
{
struct inet6_dev *idev =
rt ? ip6_dst_idev((struct dst_entry *)rt) : NULL;
struct inet6_dev *idev = rt ? rt->rt6i_idev : NULL;
int err = 0;
if (rt && rt->rt6i_prefsrc.plen)