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xfrm: policy: xfrm_get_tos cannot fail

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The comment makes it look like get_tos() is used to validate something,
but it turns out the comment was about xfrm_find_bundle() which got removed
years ago.

xfrm_get_tos will return either the tos (ipv4) or 0 (ipv6).

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Florian Westphal 2017-02-07 15:00:14 +01:00 committed by Steffen Klassert
parent 960fdfdeb9
commit f5e2bb4f5b
1 changed files with 5 additions and 14 deletions
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19
net/xfrm/xfrm_policy.c
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@ -1538,19 +1538,13 @@ xfrm_tmpl_resolve(struct xfrm_policy **pols, int npols, const struct flowi *fl,
}
/* Check that the bundle accepts the flow and its components are
* still valid.
*/
static inline int xfrm_get_tos(const struct flowi *fl, int family)
static int xfrm_get_tos(const struct flowi *fl, int family)
{
struct xfrm_policy_afinfo *afinfo = xfrm_policy_get_afinfo(family);
int tos;
struct xfrm_policy_afinfo *afinfo;
int tos = 0;
if (!afinfo)
return -EINVAL;
tos = afinfo->get_tos(fl);
afinfo = xfrm_policy_get_afinfo(family);
tos = afinfo ? afinfo->get_tos(fl) : 0;
xfrm_policy_put_afinfo(afinfo);
@ -1705,9 +1699,6 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy,
xfrm_flowi_addr_get(fl, &saddr, &daddr, family);
tos = xfrm_get_tos(fl, family);
err = tos;
if (tos < 0)
goto put_states;
dst_hold(dst);