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[IPv6]: use container_of() macro in fib6_clean_node()

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In ip6_fib.c, fib6_clean_node() casts a fib6_walker_t pointer to
a fib6_cleaner_t pointer assuming a struct fib6_walker_t (field 'w')
is the first field in struct fib6_walker_t.

To prevent any future problems that may occur if one day a field
is inadvertently inserted before the 'w' field in struct fib6_cleaner_t,
(and to improve readability), this patch uses the container_of() macro.

Signed-off-by: Benjamin Thery <benjamin.thery@bull.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Benjamin Thery 2007-10-08 20:39:36 -07:00 committed by David S. Miller
parent 4665079cbb
commit 0a8891a0a4
1 changed files with 1 additions and 1 deletions
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2
net/ipv6/ip6_fib.c
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@ -1313,7 +1313,7 @@ static int fib6_clean_node(struct fib6_walker_t *w)
{
int res;
struct rt6_info *rt;
struct fib6_cleaner_t *c = (struct fib6_cleaner_t*)w;
struct fib6_cleaner_t *c = container_of(w, struct fib6_cleaner_t, w);
for (rt = w->leaf; rt; rt = rt->u.dst.rt6_next) {
res = c->func(rt, c->arg);