netfilter: nf_ct_helper: implement variable length helper private data
This patch uses the new variable length conntrack extensions.
Instead of using union nf_conntrack_help that contain all the
helper private data information, we allocate variable length
area to store the private helper data.
This patch includes the modification of all existing helpers.
It also includes a couple of include header to avoid compilation
warnings.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/net/netfilter/nf_conntrack_h323_main.c b/net/netfilter/nf_conntrack_h323_main.c
index 46d69d7..ed21992 100644
--- a/net/netfilter/nf_conntrack_h323_main.c
+++ b/net/netfilter/nf_conntrack_h323_main.c
@@ -114,7 +114,7 @@
struct nf_conn *ct, enum ip_conntrack_info ctinfo,
unsigned char **data, int *datalen, int *dataoff)
{
- struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
+ struct nf_ct_h323_master *info = nfct_help_data(ct);
int dir = CTINFO2DIR(ctinfo);
const struct tcphdr *th;
struct tcphdr _tcph;
@@ -618,6 +618,7 @@
static struct nf_conntrack_helper nf_conntrack_helper_h245 __read_mostly = {
.name = "H.245",
.me = THIS_MODULE,
+ .data_len = sizeof(struct nf_ct_h323_master),
.tuple.src.l3num = AF_UNSPEC,
.tuple.dst.protonum = IPPROTO_UDP,
.help = h245_help,
@@ -1170,6 +1171,7 @@
{
.name = "Q.931",
.me = THIS_MODULE,
+ .data_len = sizeof(struct nf_ct_h323_master),
.tuple.src.l3num = AF_INET,
.tuple.src.u.tcp.port = cpu_to_be16(Q931_PORT),
.tuple.dst.protonum = IPPROTO_TCP,
@@ -1245,7 +1247,7 @@
unsigned char **data,
TransportAddress *taddr, int count)
{
- struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
+ struct nf_ct_h323_master *info = nfct_help_data(ct);
int dir = CTINFO2DIR(ctinfo);
int ret = 0;
int i;
@@ -1360,7 +1362,7 @@
enum ip_conntrack_info ctinfo,
unsigned char **data, RegistrationRequest *rrq)
{
- struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
+ struct nf_ct_h323_master *info = nfct_help_data(ct);
int ret;
typeof(set_ras_addr_hook) set_ras_addr;
@@ -1395,7 +1397,7 @@
enum ip_conntrack_info ctinfo,
unsigned char **data, RegistrationConfirm *rcf)
{
- struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
+ struct nf_ct_h323_master *info = nfct_help_data(ct);
int dir = CTINFO2DIR(ctinfo);
int ret;
struct nf_conntrack_expect *exp;
@@ -1444,7 +1446,7 @@
enum ip_conntrack_info ctinfo,
unsigned char **data, UnregistrationRequest *urq)
{
- struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
+ struct nf_ct_h323_master *info = nfct_help_data(ct);
int dir = CTINFO2DIR(ctinfo);
int ret;
typeof(set_sig_addr_hook) set_sig_addr;
@@ -1476,7 +1478,7 @@
enum ip_conntrack_info ctinfo,
unsigned char **data, AdmissionRequest *arq)
{
- const struct nf_ct_h323_master *info = &nfct_help(ct)->help.ct_h323_info;
+ const struct nf_ct_h323_master *info = nfct_help_data(ct);
int dir = CTINFO2DIR(ctinfo);
__be16 port;
union nf_inet_addr addr;
@@ -1743,6 +1745,7 @@
{
.name = "RAS",
.me = THIS_MODULE,
+ .data_len = sizeof(struct nf_ct_h323_master),
.tuple.src.l3num = AF_INET,
.tuple.src.u.udp.port = cpu_to_be16(RAS_PORT),
.tuple.dst.protonum = IPPROTO_UDP,
@@ -1752,6 +1755,7 @@
{
.name = "RAS",
.me = THIS_MODULE,
+ .data_len = sizeof(struct nf_ct_h323_master),
.tuple.src.l3num = AF_INET6,
.tuple.src.u.udp.port = cpu_to_be16(RAS_PORT),
.tuple.dst.protonum = IPPROTO_UDP,