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Date: Wed, 28 Jun 2017 15:26:48 +0200
From: Florian Westphal <fw@...len.de>
To: <netdev@...r.kernel.org>
Cc: Florian Westphal <fw@...len.de>
Subject: [RFC net-next 5/9] 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@...len.de>
---
net/xfrm/xfrm_policy.c | 46 ++++------------------------------------------
1 file changed, 4 insertions(+), 42 deletions(-)
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 64cef0e601b8..626351915a97 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1191,24 +1191,6 @@ __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)
@@ -1218,7 +1200,7 @@ 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);
@@ -1229,23 +1211,6 @@ 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)
{
@@ -1265,7 +1230,7 @@ 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;
@@ -2067,8 +2032,7 @@ 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)
@@ -2146,7 +2110,7 @@ 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;
@@ -2403,12 +2367,10 @@ 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);
--
2.13.0
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