static DEFINE_SPINLOCK(nf_pptp_lock);
int
-(*nf_nat_pptp_hook_outbound)(struct sk_buff **pskb,
+(*nf_nat_pptp_hook_outbound)(struct sk_buff *skb,
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_pptp_hook_outbound);
int
-(*nf_nat_pptp_hook_inbound)(struct sk_buff **pskb,
+(*nf_nat_pptp_hook_inbound)(struct sk_buff *skb,
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq) __read_mostly;
struct nf_conntrack_expect *exp) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_pptp_hook_expectfn);
-#if 0
+#ifdef DEBUG
/* PptpControlMessageType names */
-const char *pptp_msg_name[] = {
+const char *const pptp_msg_name[] = {
"UNKNOWN_MESSAGE",
"START_SESSION_REQUEST",
"START_SESSION_REPLY",
"SET_LINK_INFO"
};
EXPORT_SYMBOL(pptp_msg_name);
-#define DEBUGP(format, args...) printk(KERN_DEBUG "%s:%s: " format, __FILE__, __FUNCTION__, ## args)
-#else
-#define DEBUGP(format, args...)
#endif
#define SECS *HZ
struct nf_conntrack_expect *exp)
{
typeof(nf_nat_pptp_hook_expectfn) nf_nat_pptp_expectfn;
- DEBUGP("increasing timeouts\n");
+ pr_debug("increasing timeouts\n");
/* increase timeout of GRE data channel conntrack entry */
ct->proto.gre.timeout = PPTP_GRE_TIMEOUT;
/* obviously this tuple inversion only works until you do NAT */
nf_ct_invert_tuplepr(&inv_t, &exp->tuple);
- DEBUGP("trying to unexpect other dir: ");
+ pr_debug("trying to unexpect other dir: ");
NF_CT_DUMP_TUPLE(&inv_t);
- exp_other = nf_conntrack_expect_find_get(&inv_t);
+ exp_other = nf_ct_expect_find_get(&inv_t);
if (exp_other) {
/* delete other expectation. */
- DEBUGP("found\n");
- nf_conntrack_unexpect_related(exp_other);
- nf_conntrack_expect_put(exp_other);
+ pr_debug("found\n");
+ nf_ct_unexpect_related(exp_other);
+ nf_ct_expect_put(exp_other);
} else {
- DEBUGP("not found\n");
+ pr_debug("not found\n");
}
}
rcu_read_unlock();
static int destroy_sibling_or_exp(const struct nf_conntrack_tuple *t)
{
- struct nf_conntrack_tuple_hash *h;
+ const struct nf_conntrack_tuple_hash *h;
struct nf_conntrack_expect *exp;
struct nf_conn *sibling;
- DEBUGP("trying to timeout ct or exp for tuple ");
+ pr_debug("trying to timeout ct or exp for tuple ");
NF_CT_DUMP_TUPLE(t);
- h = nf_conntrack_find_get(t, NULL);
+ h = nf_conntrack_find_get(t);
if (h) {
sibling = nf_ct_tuplehash_to_ctrack(h);
- DEBUGP("setting timeout of conntrack %p to 0\n", sibling);
+ pr_debug("setting timeout of conntrack %p to 0\n", sibling);
sibling->proto.gre.timeout = 0;
sibling->proto.gre.stream_timeout = 0;
if (del_timer(&sibling->timeout))
nf_ct_put(sibling);
return 1;
} else {
- exp = nf_conntrack_expect_find_get(t);
+ exp = nf_ct_expect_find_get(t);
if (exp) {
- DEBUGP("unexpect_related of expect %p\n", exp);
- nf_conntrack_unexpect_related(exp);
- nf_conntrack_expect_put(exp);
+ pr_debug("unexpect_related of expect %p\n", exp);
+ nf_ct_unexpect_related(exp);
+ nf_ct_expect_put(exp);
return 1;
}
}
/* timeout GRE data connections */
static void pptp_destroy_siblings(struct nf_conn *ct)
{
- struct nf_conn_help *help = nfct_help(ct);
+ const struct nf_conn_help *help = nfct_help(ct);
struct nf_conntrack_tuple t;
nf_ct_gre_keymap_destroy(ct);
t.src.u.gre.key = help->help.ct_pptp_info.pns_call_id;
t.dst.u.gre.key = help->help.ct_pptp_info.pac_call_id;
if (!destroy_sibling_or_exp(&t))
- DEBUGP("failed to timeout original pns->pac ct/exp\n");
+ pr_debug("failed to timeout original pns->pac ct/exp\n");
/* try reply (pac->pns) tuple */
memcpy(&t, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, sizeof(t));
t.src.u.gre.key = help->help.ct_pptp_info.pac_call_id;
t.dst.u.gre.key = help->help.ct_pptp_info.pns_call_id;
if (!destroy_sibling_or_exp(&t))
- DEBUGP("failed to timeout reply pac->pns ct/exp\n");
+ pr_debug("failed to timeout reply pac->pns ct/exp\n");
}
/* expect GRE connections (PNS->PAC and PAC->PNS direction) */
int ret = 1;
typeof(nf_nat_pptp_hook_exp_gre) nf_nat_pptp_exp_gre;
- exp_orig = nf_conntrack_expect_alloc(ct);
+ exp_orig = nf_ct_expect_alloc(ct);
if (exp_orig == NULL)
goto out;
- exp_reply = nf_conntrack_expect_alloc(ct);
+ exp_reply = nf_ct_expect_alloc(ct);
if (exp_reply == NULL)
goto out_put_orig;
/* original direction, PNS->PAC */
dir = IP_CT_DIR_ORIGINAL;
- nf_conntrack_expect_init(exp_orig, ct->tuplehash[dir].tuple.src.l3num,
- &ct->tuplehash[dir].tuple.src.u3,
- &ct->tuplehash[dir].tuple.dst.u3,
- IPPROTO_GRE, &peer_callid, &callid);
+ nf_ct_expect_init(exp_orig, ct->tuplehash[dir].tuple.src.l3num,
+ &ct->tuplehash[dir].tuple.src.u3,
+ &ct->tuplehash[dir].tuple.dst.u3,
+ IPPROTO_GRE, &peer_callid, &callid);
exp_orig->expectfn = pptp_expectfn;
/* reply direction, PAC->PNS */
dir = IP_CT_DIR_REPLY;
- nf_conntrack_expect_init(exp_reply, ct->tuplehash[dir].tuple.src.l3num,
- &ct->tuplehash[dir].tuple.src.u3,
- &ct->tuplehash[dir].tuple.dst.u3,
- IPPROTO_GRE, &callid, &peer_callid);
+ nf_ct_expect_init(exp_reply, ct->tuplehash[dir].tuple.src.l3num,
+ &ct->tuplehash[dir].tuple.src.u3,
+ &ct->tuplehash[dir].tuple.dst.u3,
+ IPPROTO_GRE, &callid, &peer_callid);
exp_reply->expectfn = pptp_expectfn;
nf_nat_pptp_exp_gre = rcu_dereference(nf_nat_pptp_hook_exp_gre);
if (nf_nat_pptp_exp_gre && ct->status & IPS_NAT_MASK)
nf_nat_pptp_exp_gre(exp_orig, exp_reply);
- if (nf_conntrack_expect_related(exp_orig) != 0)
+ if (nf_ct_expect_related(exp_orig) != 0)
goto out_put_both;
- if (nf_conntrack_expect_related(exp_reply) != 0)
+ if (nf_ct_expect_related(exp_reply) != 0)
goto out_unexpect_orig;
/* Add GRE keymap entries */
ret = 0;
out_put_both:
- nf_conntrack_expect_put(exp_reply);
+ nf_ct_expect_put(exp_reply);
out_put_orig:
- nf_conntrack_expect_put(exp_orig);
+ nf_ct_expect_put(exp_orig);
out:
return ret;
out_unexpect_both:
- nf_conntrack_unexpect_related(exp_reply);
+ nf_ct_unexpect_related(exp_reply);
out_unexpect_orig:
- nf_conntrack_unexpect_related(exp_orig);
+ nf_ct_unexpect_related(exp_orig);
goto out_put_both;
}
static inline int
-pptp_inbound_pkt(struct sk_buff **pskb,
+pptp_inbound_pkt(struct sk_buff *skb,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq,
unsigned int reqlen,
typeof(nf_nat_pptp_hook_inbound) nf_nat_pptp_inbound;
msg = ntohs(ctlh->messageType);
- DEBUGP("inbound control message %s\n", pptp_msg_name[msg]);
+ pr_debug("inbound control message %s\n", pptp_msg_name[msg]);
switch (msg) {
case PPTP_START_SESSION_REPLY:
pcid = pptpReq->ocack.peersCallID;
if (info->pns_call_id != pcid)
goto invalid;
- DEBUGP("%s, CID=%X, PCID=%X\n", pptp_msg_name[msg],
- ntohs(cid), ntohs(pcid));
+ pr_debug("%s, CID=%X, PCID=%X\n", pptp_msg_name[msg],
+ ntohs(cid), ntohs(pcid));
if (pptpReq->ocack.resultCode == PPTP_OUTCALL_CONNECT) {
info->cstate = PPTP_CALL_OUT_CONF;
goto invalid;
cid = pptpReq->icreq.callID;
- DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+ pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
info->cstate = PPTP_CALL_IN_REQ;
info->pac_call_id = cid;
break;
if (info->pns_call_id != pcid)
goto invalid;
- DEBUGP("%s, PCID=%X\n", pptp_msg_name[msg], ntohs(pcid));
+ pr_debug("%s, PCID=%X\n", pptp_msg_name[msg], ntohs(pcid));
info->cstate = PPTP_CALL_IN_CONF;
/* we expect a GRE connection from PAC to PNS */
case PPTP_CALL_DISCONNECT_NOTIFY:
/* server confirms disconnect */
cid = pptpReq->disc.callID;
- DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+ pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
info->cstate = PPTP_CALL_NONE;
/* untrack this call id, unexpect GRE packets */
nf_nat_pptp_inbound = rcu_dereference(nf_nat_pptp_hook_inbound);
if (nf_nat_pptp_inbound && ct->status & IPS_NAT_MASK)
- return nf_nat_pptp_inbound(pskb, ct, ctinfo, ctlh, pptpReq);
+ return nf_nat_pptp_inbound(skb, ct, ctinfo, ctlh, pptpReq);
return NF_ACCEPT;
invalid:
- DEBUGP("invalid %s: type=%d cid=%u pcid=%u "
- "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
- msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
- msg, ntohs(cid), ntohs(pcid), info->cstate, info->sstate,
- ntohs(info->pns_call_id), ntohs(info->pac_call_id));
+ pr_debug("invalid %s: type=%d cid=%u pcid=%u "
+ "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
+ msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
+ msg, ntohs(cid), ntohs(pcid), info->cstate, info->sstate,
+ ntohs(info->pns_call_id), ntohs(info->pac_call_id));
return NF_ACCEPT;
}
static inline int
-pptp_outbound_pkt(struct sk_buff **pskb,
+pptp_outbound_pkt(struct sk_buff *skb,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq,
unsigned int reqlen,
typeof(nf_nat_pptp_hook_outbound) nf_nat_pptp_outbound;
msg = ntohs(ctlh->messageType);
- DEBUGP("outbound control message %s\n", pptp_msg_name[msg]);
+ pr_debug("outbound control message %s\n", pptp_msg_name[msg]);
switch (msg) {
case PPTP_START_SESSION_REQUEST:
info->cstate = PPTP_CALL_OUT_REQ;
/* track PNS call id */
cid = pptpReq->ocreq.callID;
- DEBUGP("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
+ pr_debug("%s, CID=%X\n", pptp_msg_name[msg], ntohs(cid));
info->pns_call_id = cid;
break;
pcid = pptpReq->icack.peersCallID;
if (info->pac_call_id != pcid)
goto invalid;
- DEBUGP("%s, CID=%X PCID=%X\n", pptp_msg_name[msg],
- ntohs(cid), ntohs(pcid));
+ pr_debug("%s, CID=%X PCID=%X\n", pptp_msg_name[msg],
+ ntohs(cid), ntohs(pcid));
if (pptpReq->icack.resultCode == PPTP_INCALL_ACCEPT) {
/* part two of the three-way handshake */
nf_nat_pptp_outbound = rcu_dereference(nf_nat_pptp_hook_outbound);
if (nf_nat_pptp_outbound && ct->status & IPS_NAT_MASK)
- return nf_nat_pptp_outbound(pskb, ct, ctinfo, ctlh, pptpReq);
+ return nf_nat_pptp_outbound(skb, ct, ctinfo, ctlh, pptpReq);
return NF_ACCEPT;
invalid:
- DEBUGP("invalid %s: type=%d cid=%u pcid=%u "
- "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
- msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
- msg, ntohs(cid), ntohs(pcid), info->cstate, info->sstate,
- ntohs(info->pns_call_id), ntohs(info->pac_call_id));
+ pr_debug("invalid %s: type=%d cid=%u pcid=%u "
+ "cstate=%d sstate=%d pns_cid=%u pac_cid=%u\n",
+ msg <= PPTP_MSG_MAX ? pptp_msg_name[msg] : pptp_msg_name[0],
+ msg, ntohs(cid), ntohs(pcid), info->cstate, info->sstate,
+ ntohs(info->pns_call_id), ntohs(info->pac_call_id));
return NF_ACCEPT;
}
/* track caller id inside control connection, call expect_related */
static int
-conntrack_pptp_help(struct sk_buff **pskb, unsigned int protoff,
+conntrack_pptp_help(struct sk_buff *skb, unsigned int protoff,
struct nf_conn *ct, enum ip_conntrack_info ctinfo)
{
int dir = CTINFO2DIR(ctinfo);
- struct nf_ct_pptp_master *info = &nfct_help(ct)->help.ct_pptp_info;
- struct tcphdr _tcph, *tcph;
- struct pptp_pkt_hdr _pptph, *pptph;
+ const struct nf_ct_pptp_master *info = &nfct_help(ct)->help.ct_pptp_info;
+ const struct tcphdr *tcph;
+ struct tcphdr _tcph;
+ const struct pptp_pkt_hdr *pptph;
+ struct pptp_pkt_hdr _pptph;
struct PptpControlHeader _ctlh, *ctlh;
union pptp_ctrl_union _pptpReq, *pptpReq;
- unsigned int tcplen = (*pskb)->len - protoff;
+ unsigned int tcplen = skb->len - protoff;
unsigned int datalen, reqlen, nexthdr_off;
int oldsstate, oldcstate;
int ret;
return NF_ACCEPT;
nexthdr_off = protoff;
- tcph = skb_header_pointer(*pskb, nexthdr_off, sizeof(_tcph), &_tcph);
+ tcph = skb_header_pointer(skb, nexthdr_off, sizeof(_tcph), &_tcph);
BUG_ON(!tcph);
nexthdr_off += tcph->doff * 4;
datalen = tcplen - tcph->doff * 4;
- pptph = skb_header_pointer(*pskb, nexthdr_off, sizeof(_pptph), &_pptph);
+ pptph = skb_header_pointer(skb, nexthdr_off, sizeof(_pptph), &_pptph);
if (!pptph) {
- DEBUGP("no full PPTP header, can't track\n");
+ pr_debug("no full PPTP header, can't track\n");
return NF_ACCEPT;
}
nexthdr_off += sizeof(_pptph);
/* if it's not a control message we can't do anything with it */
if (ntohs(pptph->packetType) != PPTP_PACKET_CONTROL ||
ntohl(pptph->magicCookie) != PPTP_MAGIC_COOKIE) {
- DEBUGP("not a control packet\n");
+ pr_debug("not a control packet\n");
return NF_ACCEPT;
}
- ctlh = skb_header_pointer(*pskb, nexthdr_off, sizeof(_ctlh), &_ctlh);
+ ctlh = skb_header_pointer(skb, nexthdr_off, sizeof(_ctlh), &_ctlh);
if (!ctlh)
return NF_ACCEPT;
nexthdr_off += sizeof(_ctlh);
if (reqlen > sizeof(*pptpReq))
reqlen = sizeof(*pptpReq);
- pptpReq = skb_header_pointer(*pskb, nexthdr_off, reqlen, &_pptpReq);
+ pptpReq = skb_header_pointer(skb, nexthdr_off, reqlen, &_pptpReq);
if (!pptpReq)
return NF_ACCEPT;
* established from PNS->PAC. However, RFC makes no guarantee */
if (dir == IP_CT_DIR_ORIGINAL)
/* client -> server (PNS -> PAC) */
- ret = pptp_outbound_pkt(pskb, ctlh, pptpReq, reqlen, ct,
+ ret = pptp_outbound_pkt(skb, ctlh, pptpReq, reqlen, ct,
ctinfo);
else
/* server -> client (PAC -> PNS) */
- ret = pptp_inbound_pkt(pskb, ctlh, pptpReq, reqlen, ct,
+ ret = pptp_inbound_pkt(skb, ctlh, pptpReq, reqlen, ct,
ctinfo);
- DEBUGP("sstate: %d->%d, cstate: %d->%d\n",
- oldsstate, info->sstate, oldcstate, info->cstate);
+ pr_debug("sstate: %d->%d, cstate: %d->%d\n",
+ oldsstate, info->sstate, oldcstate, info->cstate);
spin_unlock_bh(&nf_pptp_lock);
return ret;
.tuple.src.l3num = AF_INET,
.tuple.src.u.tcp.port = __constant_htons(PPTP_CONTROL_PORT),
.tuple.dst.protonum = IPPROTO_TCP,
- .mask.src.l3num = 0xffff,
- .mask.src.u.tcp.port = __constant_htons(0xffff),
- .mask.dst.protonum = 0xff,
.help = conntrack_pptp_help,
.destroy = pptp_destroy_siblings,
};
git.samba.org / sfrench / cifs-2.6.git / blobdiff