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xfrm_policy: kill flow to policy dir conversion 

XFRM_POLICY_IN/OUT/FWD are identical to FLOW_DIR_*, so gcc already
removed this function as its just returns the argument.  Again, no
code change.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal 2017-07-17 13:57:23 +02:00 committed by David S. Miller
parent 855dad99c0
commit aff669bc28
1 changed files with 4 additions and 42 deletions
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46
net/xfrm/xfrm_policy.c
View File

@ -1187,24 +1187,6 @@ __xfrm_policy_lookup(struct net *net, const struct flowi *fl, u16 family, u8 dir
return xfrm_policy_lookup_bytype(net, XFRM_POLICY_TYPE_MAIN, fl, family, dir);
}
static int flow_to_policy_dir(int dir)
{
if (XFRM_POLICY_IN == FLOW_DIR_IN &&
XFRM_POLICY_OUT == FLOW_DIR_OUT &&
XFRM_POLICY_FWD == FLOW_DIR_FWD)
return dir;
switch (dir) {
default:
case FLOW_DIR_IN:
return XFRM_POLICY_IN;
case FLOW_DIR_OUT:
return XFRM_POLICY_OUT;
case FLOW_DIR_FWD:
return XFRM_POLICY_FWD;
}
}
static struct flow_cache_object *
xfrm_policy_lookup(struct net *net, const struct flowi *fl, u16 family,
u8 dir, struct flow_cache_object *old_obj, void *ctx)
@ -1214,7 +1196,7 @@ xfrm_policy_lookup(struct net *net, const struct flowi *fl, u16 family,
if (old_obj)
xfrm_pol_put(container_of(old_obj, struct xfrm_policy, flo));
pol = __xfrm_policy_lookup(net, fl, family, flow_to_policy_dir(dir));
pol = __xfrm_policy_lookup(net, fl, family, dir);
if (IS_ERR_OR_NULL(pol))
return ERR_CAST(pol);
@ -1225,23 +1207,6 @@ xfrm_policy_lookup(struct net *net, const struct flowi *fl, u16 family,
return &pol->flo;
}
static inline int policy_to_flow_dir(int dir)
{
if (XFRM_POLICY_IN == FLOW_DIR_IN &&
XFRM_POLICY_OUT == FLOW_DIR_OUT &&
XFRM_POLICY_FWD == FLOW_DIR_FWD)
return dir;
switch (dir) {
default:
case XFRM_POLICY_IN:
return FLOW_DIR_IN;
case XFRM_POLICY_OUT:
return FLOW_DIR_OUT;
case XFRM_POLICY_FWD:
return FLOW_DIR_FWD;
}
}
static struct xfrm_policy *xfrm_sk_policy_lookup(const struct sock *sk, int dir,
const struct flowi *fl, u16 family)
{
@ -1261,7 +1226,7 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(const struct sock *sk, int dir,
}
err = security_xfrm_policy_lookup(pol->security,
fl->flowi_secid,
policy_to_flow_dir(dir));
dir);
if (!err) {
if (!xfrm_pol_hold_rcu(pol))
goto again;
@ -2063,8 +2028,7 @@ xfrm_bundle_lookup(struct net *net, const struct flowi *fl, u16 family, u8 dir,
/* Resolve policies to use if we couldn't get them from
* previous cache entry */
num_pols = 1;
pols[0] = __xfrm_policy_lookup(net, fl, family,
flow_to_policy_dir(dir));
pols[0] = __xfrm_policy_lookup(net, fl, family, dir);
err = xfrm_expand_policies(fl, family, pols,
&num_pols, &num_xfrms);
if (err < 0)
@ -2142,7 +2106,7 @@ struct dst_entry *xfrm_lookup(struct net *net, struct dst_entry *dst_orig,
struct xfrm_dst *xdst;
struct dst_entry *dst, *route;
u16 family = dst_orig->ops->family;
u8 dir = policy_to_flow_dir(XFRM_POLICY_OUT);
u8 dir = XFRM_POLICY_OUT;
int i, err, num_pols, num_xfrms = 0, drop_pols = 0;
dst = NULL;
@ -2399,12 +2363,10 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
int pi;
int reverse;
struct flowi fl;
u8 fl_dir;
int xerr_idx = -1;
reverse = dir & ~XFRM_POLICY_MASK;
dir &= XFRM_POLICY_MASK;
fl_dir = policy_to_flow_dir(dir);
if (__xfrm_decode_session(skb, &fl, family, reverse) < 0) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINHDRERROR);