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path: root/net/ipv4/netfilter/ipt_ECN.c
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Diffstat (limited to 'net/ipv4/netfilter/ipt_ECN.c')
-rw-r--r--net/ipv4/netfilter/ipt_ECN.c27
1 files changed, 13 insertions, 14 deletions
diff --git a/net/ipv4/netfilter/ipt_ECN.c b/net/ipv4/netfilter/ipt_ECN.c
index 92744be1c55e..add110060a22 100644
--- a/net/ipv4/netfilter/ipt_ECN.c
+++ b/net/ipv4/netfilter/ipt_ECN.c
@@ -26,15 +26,15 @@ MODULE_DESCRIPTION("iptables ECN modification module");
/* set ECT codepoint from IP header.
* return false if there was an error. */
static inline bool
-set_ect_ip(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
+set_ect_ip(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
{
- struct iphdr *iph = ip_hdr(*pskb);
+ struct iphdr *iph = ip_hdr(skb);
if ((iph->tos & IPT_ECN_IP_MASK) != (einfo->ip_ect & IPT_ECN_IP_MASK)) {
__u8 oldtos;
- if (!skb_make_writable(*pskb, sizeof(struct iphdr)))
+ if (!skb_make_writable(skb, sizeof(struct iphdr)))
return false;
- iph = ip_hdr(*pskb);
+ iph = ip_hdr(skb);
oldtos = iph->tos;
iph->tos &= ~IPT_ECN_IP_MASK;
iph->tos |= (einfo->ip_ect & IPT_ECN_IP_MASK);
@@ -45,14 +45,13 @@ set_ect_ip(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
/* Return false if there was an error. */
static inline bool
-set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
+set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
{
struct tcphdr _tcph, *tcph;
__be16 oldval;
/* Not enought header? */
- tcph = skb_header_pointer(*pskb, ip_hdrlen(*pskb),
- sizeof(_tcph), &_tcph);
+ tcph = skb_header_pointer(skb, ip_hdrlen(skb), sizeof(_tcph), &_tcph);
if (!tcph)
return false;
@@ -62,9 +61,9 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
tcph->cwr == einfo->proto.tcp.cwr))
return true;
- if (!skb_make_writable(*pskb, ip_hdrlen(*pskb) + sizeof(*tcph)))
+ if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
return false;
- tcph = (void *)ip_hdr(*pskb) + ip_hdrlen(*pskb);
+ tcph = (void *)ip_hdr(skb) + ip_hdrlen(skb);
oldval = ((__be16 *)tcph)[6];
if (einfo->operation & IPT_ECN_OP_SET_ECE)
@@ -72,13 +71,13 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo)
if (einfo->operation & IPT_ECN_OP_SET_CWR)
tcph->cwr = einfo->proto.tcp.cwr;
- nf_proto_csum_replace2(&tcph->check, *pskb,
+ nf_proto_csum_replace2(&tcph->check, skb,
oldval, ((__be16 *)tcph)[6], 0);
return true;
}
static unsigned int
-target(struct sk_buff **pskb,
+target(struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
@@ -88,12 +87,12 @@ target(struct sk_buff **pskb,
const struct ipt_ECN_info *einfo = targinfo;
if (einfo->operation & IPT_ECN_OP_SET_IP)
- if (!set_ect_ip(pskb, einfo))
+ if (!set_ect_ip(skb, einfo))
return NF_DROP;
if (einfo->operation & (IPT_ECN_OP_SET_ECE | IPT_ECN_OP_SET_CWR)
- && ip_hdr(*pskb)->protocol == IPPROTO_TCP)
- if (!set_ect_tcp(pskb, einfo))
+ && ip_hdr(skb)->protocol == IPPROTO_TCP)
+ if (!set_ect_tcp(skb, einfo))
return NF_DROP;
return XT_CONTINUE;