[NETFILTER]: PPTP conntrack: remove dead code

The call ID in reply packets is never changed, remove the code.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/netfilter/ip_nat_helper_pptp.c b/net/ipv4/netfilter/ip_nat_helper_pptp.c
index 6e8bd6b..0f5e753 100644 (file)
--- a/net/ipv4/netfilter/ip_nat_helper_pptp.c
+++ b/net/ipv4/netfilter/ip_nat_helper_pptp.c
@@ -296,16 +296,15 @@ pptp_inbound_pkt(struct sk_buff **pskb,
                 union pptp_ctrl_union *pptpReq)
 {
        struct ip_nat_pptp *nat_pptp_info = &ct->nat.help.nat_pptp_info;
-       u_int16_t msg, new_cid = 0;
+       u_int16_t msg;
        __be16 new_pcid;
-       unsigned int pcid_off, cid_off = 0;
+       unsigned int pcid_off;
 
        new_pcid = nat_pptp_info->pns_call_id;
 
        switch (msg = ntohs(ctlh->messageType)) {
        case PPTP_OUT_CALL_REPLY:
                pcid_off = offsetof(union pptp_ctrl_union, ocack.peersCallID);
-               cid_off = offsetof(union pptp_ctrl_union, ocack.callID);
                break;
        case PPTP_IN_CALL_CONNECT:
                pcid_off = offsetof(union pptp_ctrl_union, iccon.peersCallID);
@@ -351,17 +350,6 @@ pptp_inbound_pkt(struct sk_buff **pskb,
                                     sizeof(new_pcid), (char *)&new_pcid,
                                     sizeof(new_pcid)) == 0)
                return NF_DROP;
-
-       if (new_cid) {
-               DEBUGP("altering call id from 0x%04x to 0x%04x\n",
-                       ntohs(REQ_CID(pptpReq, cid_off)), ntohs(new_cid));
-               if (ip_nat_mangle_tcp_packet(pskb, ct, ctinfo,
-                                            cid_off + sizeof(struct pptp_pkt_hdr) +
-                                            sizeof(struct PptpControlHeader),
-                                            sizeof(new_cid), (char *)&new_cid,
-                                            sizeof(new_cid)) == 0)
-                       return NF_DROP;
-       }
        return NF_ACCEPT;
 }