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Code Issues Releases Wiki Activity

ipp2p: use auxiliary skb functions

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This commit is contained in:
Jan Engelhardt
2008-03-26 07:13:16 +01:00
parent 569643ac8c
commit 3c8131b976
1 changed files with 4 additions and 4 deletions
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8
extensions/xt_ipp2p.c
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@@ -795,7 +795,7 @@ ipp2p_mt(const struct sk_buff *skb, const struct net_device *in,
const struct iphdr *ip = ip_hdr(skb); const struct iphdr *ip = ip_hdr(skb);
bool p2p_result = false; bool p2p_result = false;
int i = 0; int i = 0;
unsigned int hlen = ntohs(ip->tot_len) - ip->ihl * 4; /* hlen = packet-data length */ unsigned int hlen = ntohs(ip->tot_len) - ip_hdrlen(skb); /* hlen = packet-data length */
/* must not be a fragment */ /* must not be a fragment */
if (offset != 0) { if (offset != 0) {
@@ -811,12 +811,12 @@ ipp2p_mt(const struct sk_buff *skb, const struct net_device *in,
return 0; return 0;
} }
haystack = (const char *)ip + ip->ihl * 4; /* haystack = packet data */ haystack = skb_network_header(skb) + ip_hdrlen(skb);
switch (ip->protocol) { switch (ip->protocol) {
case IPPROTO_TCP: /* what to do with a TCP packet */ case IPPROTO_TCP: /* what to do with a TCP packet */
{ {
const struct tcphdr *tcph = (const void *)ip + ip->ihl * 4; const struct tcphdr *tcph = tcp_hdr(skb);
if (tcph->fin) return 0; /* if FIN bit is set bail out */ if (tcph->fin) return 0; /* if FIN bit is set bail out */
if (tcph->syn) return 0; /* if SYN bit is set bail out */ if (tcph->syn) return 0; /* if SYN bit is set bail out */
@@ -844,7 +844,7 @@ ipp2p_mt(const struct sk_buff *skb, const struct net_device *in,
case IPPROTO_UDP: /* what to do with an UDP packet */ case IPPROTO_UDP: /* what to do with an UDP packet */
{ {
const struct udphdr *udph = (const void *)ip + ip->ihl * 4; const struct udphdr *udph = udp_hdr(skb);
while (udp_list[i].command) { while (udp_list[i].command) {
if (((info->cmd & udp_list[i].command) == udp_list[i].command || if (((info->cmd & udp_list[i].command) == udp_list[i].command ||