netfilter: limit, hashlimit: avoid duplicated inline

credit_cap can be set to credit, which avoids inlining user2credits
twice. Also, remove inline keyword and let compiler decide.

old:
    684     192       0     876     36c net/netfilter/xt_limit.o
   4927     344      32    5303    14b7 net/netfilter/xt_hashlimit.o
now:
    668     192       0     860     35c net/netfilter/xt_limit.o
   4793     344      32    5169    1431 net/netfilter/xt_hashlimit.o

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

2 files changed, 5 insertions, 8 deletions

diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index d95f9c963cde..2195eb0727a3 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -389,8 +389,7 @@ static void htable_put(struct xt_hashlimit_htable *hinfo)
 #define CREDITS_PER_JIFFY POW2_BELOW32(MAX_CPJ)
 
 /* Precision saver. */
-static inline u_int32_t
-user2credits(u_int32_t user)
+static u32 user2credits(u32 user)
 {
         /* If multiplying would overflow... */
         if (user > 0xFFFFFFFF / (HZ*CREDITS_PER_JIFFY))
@@ -400,7 +399,7 @@ user2credits(u_int32_t user)
         return (user * HZ * CREDITS_PER_JIFFY) / XT_HASHLIMIT_SCALE;
 }
 
-static inline void rateinfo_recalc(struct dsthash_ent *dh, unsigned long now)
+static void rateinfo_recalc(struct dsthash_ent *dh, unsigned long now)
 {
         dh->rateinfo.credit += (now - dh->rateinfo.prev) * CREDITS_PER_JIFFY;
         if (dh->rateinfo.credit > dh->rateinfo.credit_cap)
@@ -535,8 +534,7 @@ hashlimit_mt(const struct sk_buff *skb, struct xt_action_param *par)
                 dh->rateinfo.prev = jiffies;
                 dh->rateinfo.credit = user2credits(hinfo->cfg.avg *
                                       hinfo->cfg.burst);
-                dh->rateinfo.credit_cap = user2credits(hinfo->cfg.avg *
-                                          hinfo->cfg.burst);
+                dh->rateinfo.credit_cap = dh->rateinfo.credit;
                 dh->rateinfo.cost = user2credits(hinfo->cfg.avg);
         } else {
                 /* update expiration timeout */
diff --git a/net/netfilter/xt_limit.c b/net/netfilter/xt_limit.c
index 32b7a579a032..5c22ce8ab309 100644
--- a/net/netfilter/xt_limit.c
+++ b/net/netfilter/xt_limit.c
@@ -88,8 +88,7 @@ limit_mt(const struct sk_buff *skb, struct xt_action_param *par)
 }
 
 /* Precision saver. */
-static u_int32_t
-user2credits(u_int32_t user)
+static u32 user2credits(u32 user)
 {
         /* If multiplying would overflow... */
         if (user > 0xFFFFFFFF / (HZ*CREDITS_PER_JIFFY))
@@ -123,7 +122,7 @@ static int limit_mt_check(const struct xt_mtchk_param *par)
                    128. */
                 priv->prev = jiffies;
                 priv->credit = user2credits(r->avg * r->burst); /* Credits full. */
-                r->credit_cap = user2credits(r->avg * r->burst); /* Credits full. */
+                r->credit_cap = priv->credit; /* Credits full. */
                 r->cost = user2credits(r->avg);
         }
         return 0;