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netfilter: nf_nat_snmp_basic: use nf_ct_helper_log

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Use nf_ct_helper_log to write log message.

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Taehee Yoo 2018-01-08 00:10:21 +09:00 committed by Pablo Neira Ayuso
parent 8b8f0813b7
commit bea588b028
1 changed files with 6 additions and 5 deletions
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11
net/ipv4/netfilter/nf_nat_snmp_basic.c
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@ -1109,7 +1109,7 @@ static int snmp_translate(struct nf_conn *ct, int dir, struct sk_buff *skb)
if (!snmp_parse_mangle((unsigned char *)udph + sizeof(struct udphdr),
paylen, &map, &udph->check)) {
net_warn_ratelimited("bsalg: parser failed\n");
nf_ct_helper_log(skb, ct, "parser failed\n");
return NF_DROP;
}
return NF_ACCEPT;
@ -1143,13 +1143,14 @@ static int help(struct sk_buff *skb, unsigned int protoff,
* can mess around with the payload.
*/
if (ntohs(udph->len) != skb->len - (iph->ihl << 2)) {
net_warn_ratelimited("SNMP: dropping malformed packet src=%pI4 dst=%pI4\n",
&iph->saddr, &iph->daddr);
return NF_DROP;
nf_ct_helper_log(skb, ct, "dropping malformed packet\n");
return NF_DROP;
}
if (!skb_make_writable(skb, skb->len))
if (!skb_make_writable(skb, skb->len)) {
nf_ct_helper_log(skb, ct, "cannot mangle packet");
return NF_DROP;
}
spin_lock_bh(&snmp_lock);
ret = snmp_translate(ct, dir, skb);