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-rw-r--r--net/netfilter/xt_connbytes.c29
1 files changed, 12 insertions, 17 deletions
diff --git a/net/netfilter/xt_connbytes.c b/net/netfilter/xt_connbytes.c
index d93cb096a675..5e32dfa2668b 100644
--- a/net/netfilter/xt_connbytes.c
+++ b/net/netfilter/xt_connbytes.c
@@ -52,6 +52,8 @@ match(const struct sk_buff *skb,
{
const struct xt_connbytes_info *sinfo = matchinfo;
u_int64_t what = 0; /* initialize to make gcc happy */
+ u_int64_t bytes = 0;
+ u_int64_t pkts = 0;
const struct ip_conntrack_counter *counters;
if (!(counters = nf_ct_get_counters(skb)))
@@ -89,29 +91,22 @@ match(const struct sk_buff *skb,
case XT_CONNBYTES_AVGPKT:
switch (sinfo->direction) {
case XT_CONNBYTES_DIR_ORIGINAL:
- what = div64_64(counters[IP_CT_DIR_ORIGINAL].bytes,
- counters[IP_CT_DIR_ORIGINAL].packets);
+ bytes = counters[IP_CT_DIR_ORIGINAL].bytes;
+ pkts = counters[IP_CT_DIR_ORIGINAL].packets;
break;
case XT_CONNBYTES_DIR_REPLY:
- what = div64_64(counters[IP_CT_DIR_REPLY].bytes,
- counters[IP_CT_DIR_REPLY].packets);
+ bytes = counters[IP_CT_DIR_REPLY].bytes;
+ pkts = counters[IP_CT_DIR_REPLY].packets;
break;
case XT_CONNBYTES_DIR_BOTH:
- {
- u_int64_t bytes;
- u_int64_t pkts;
- bytes = counters[IP_CT_DIR_ORIGINAL].bytes +
- counters[IP_CT_DIR_REPLY].bytes;
- pkts = counters[IP_CT_DIR_ORIGINAL].packets+
- counters[IP_CT_DIR_REPLY].packets;
-
- /* FIXME_THEORETICAL: what to do if sum
- * overflows ? */
-
- what = div64_64(bytes, pkts);
- }
+ bytes = counters[IP_CT_DIR_ORIGINAL].bytes +
+ counters[IP_CT_DIR_REPLY].bytes;
+ pkts = counters[IP_CT_DIR_ORIGINAL].packets +
+ counters[IP_CT_DIR_REPLY].packets;
break;
}
+ if (pkts != 0)
+ what = div64_64(bytes, pkts);
break;
}