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net: fib6: convert cfg metric to u32 outside of table write lock

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Do the nla validation earlier, outside the write lock.

This is needed by followup patch which needs to be able to call
request_module (which can sleep) if needed.

Joint work with Daniel Borkmann.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal
2015-01-05 23:57:44 +01:00
committed by David S. Miller
parent 0409c9a5a7
commit e715b6d3a5
3 changed files with 93 additions and 49 deletions
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10
include/net/ip6_fib.h
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@@ -74,6 +74,11 @@ struct fib6_node {
#define FIB6_SUBTREE(fn) ((fn)->subtree)
#endif
struct mx6_config {
const u32 *mx;
DECLARE_BITMAP(mx_valid, RTAX_MAX);
};
/*
* routing information
*
@@ -291,9 +296,8 @@ struct fib6_node *fib6_locate(struct fib6_node *root,
void fib6_clean_all(struct net *net, int (*func)(struct rt6_info *, void *arg),
void *arg);
int fib6_add(struct fib6_node *root, struct rt6_info *rt, struct nl_info *info,
struct nlattr *mx, int mx_len);
int fib6_add(struct fib6_node *root, struct rt6_info *rt,
struct nl_info *info, struct mx6_config *mxc);
int fib6_del(struct rt6_info *rt, struct nl_info *info);
void inet6_rt_notify(int event, struct rt6_info *rt, struct nl_info *info);