struct nf_conntrack_helper *nf_conntrack_helper_try_module_get(const char *name,
u16 l3num,
u8 protonum);
+void nf_ct_helper_init(struct nf_conntrack_helper *helper,
+ u16 l3num, u16 protonum, const char *name,
+ u16 default_port, u16 spec_port, u32 id,
+ const struct nf_conntrack_expect_policy *exp_pol,
+ u32 expect_class_max, u32 data_len,
+ int (*help)(struct sk_buff *skb, unsigned int protoff,
+ struct nf_conn *ct,
+ enum ip_conntrack_info ctinfo),
+ int (*from_nlattr)(struct nlattr *attr,
+ struct nf_conn *ct),
+ struct module *module);
int nf_conntrack_helper_register(struct nf_conntrack_helper *);
void nf_conntrack_helper_unregister(struct nf_conntrack_helper *);
+int nf_conntrack_helpers_register(struct nf_conntrack_helper *, unsigned int);
+void nf_conntrack_helpers_unregister(struct nf_conntrack_helper *,
+ unsigned int);
+
struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct,
struct nf_conntrack_helper *helper,
gfp_t gfp);
return 0;
}
-static struct nf_conntrack_helper ftp[MAX_PORTS][2] __read_mostly;
+static struct nf_conntrack_helper ftp[MAX_PORTS * 2] __read_mostly;
static const struct nf_conntrack_expect_policy ftp_exp_policy = {
.max_expected = 1,
/* don't make this __exit, since it's called from __init ! */
static void nf_conntrack_ftp_fini(void)
{
- int i, j;
- for (i = 0; i < ports_c; i++) {
- for (j = 0; j < 2; j++) {
- if (ftp[i][j].me == NULL)
- continue;
-
- pr_debug("unregistering helper for pf: %d port: %d\n",
- ftp[i][j].tuple.src.l3num, ports[i]);
- nf_conntrack_helper_unregister(&ftp[i][j]);
- }
- }
-
+ nf_conntrack_helpers_unregister(ftp, ports_c * 2);
kfree(ftp_buffer);
}
static int __init nf_conntrack_ftp_init(void)
{
- int i, j = -1, ret = 0;
+ int i, ret = 0;
ftp_buffer = kmalloc(65536, GFP_KERNEL);
if (!ftp_buffer)
/* FIXME should be configurable whether IPv4 and IPv6 FTP connections
are tracked or not - YK */
for (i = 0; i < ports_c; i++) {
- ftp[i][0].tuple.src.l3num = PF_INET;
- ftp[i][1].tuple.src.l3num = PF_INET6;
- for (j = 0; j < 2; j++) {
- ftp[i][j].data_len = sizeof(struct nf_ct_ftp_master);
- ftp[i][j].tuple.src.u.tcp.port = htons(ports[i]);
- ftp[i][j].tuple.dst.protonum = IPPROTO_TCP;
- ftp[i][j].expect_policy = &ftp_exp_policy;
- ftp[i][j].me = THIS_MODULE;
- ftp[i][j].help = help;
- ftp[i][j].from_nlattr = nf_ct_ftp_from_nlattr;
- if (ports[i] == FTP_PORT)
- sprintf(ftp[i][j].name, "ftp");
- else
- sprintf(ftp[i][j].name, "ftp-%d", ports[i]);
-
- pr_debug("registering helper for pf: %d port: %d\n",
- ftp[i][j].tuple.src.l3num, ports[i]);
- ret = nf_conntrack_helper_register(&ftp[i][j]);
- if (ret) {
- pr_err("failed to register helper for pf: %d port: %d\n",
- ftp[i][j].tuple.src.l3num, ports[i]);
- ports_c = i;
- nf_conntrack_ftp_fini();
- return ret;
- }
- }
+ nf_ct_helper_init(&ftp[2 * i], AF_INET, IPPROTO_TCP, "ftp",
+ FTP_PORT, ports[i], ports[i], &ftp_exp_policy,
+ 0, sizeof(struct nf_ct_ftp_master), help,
+ nf_ct_ftp_from_nlattr, THIS_MODULE);
+ nf_ct_helper_init(&ftp[2 * i + 1], AF_INET6, IPPROTO_TCP, "ftp",
+ FTP_PORT, ports[i], ports[i], &ftp_exp_policy,
+ 0, sizeof(struct nf_ct_ftp_master), help,
+ nf_ct_ftp_from_nlattr, THIS_MODULE);
+ }
+
+ ret = nf_conntrack_helpers_register(ftp, ports_c * 2);
+ if (ret < 0) {
+ pr_err("failed to register helpers\n");
+ kfree(ftp_buffer);
+ return ret;
}
return 0;
}
EXPORT_SYMBOL_GPL(nf_conntrack_helper_unregister);
+void nf_ct_helper_init(struct nf_conntrack_helper *helper,
+ u16 l3num, u16 protonum, const char *name,
+ u16 default_port, u16 spec_port, u32 id,
+ const struct nf_conntrack_expect_policy *exp_pol,
+ u32 expect_class_max, u32 data_len,
+ int (*help)(struct sk_buff *skb, unsigned int protoff,
+ struct nf_conn *ct,
+ enum ip_conntrack_info ctinfo),
+ int (*from_nlattr)(struct nlattr *attr,
+ struct nf_conn *ct),
+ struct module *module)
+{
+ helper->tuple.src.l3num = l3num;
+ helper->tuple.dst.protonum = protonum;
+ helper->tuple.src.u.all = htons(spec_port);
+ helper->expect_policy = exp_pol;
+ helper->expect_class_max = expect_class_max;
+ helper->data_len = data_len;
+ helper->help = help;
+ helper->from_nlattr = from_nlattr;
+ helper->me = module;
+
+ if (spec_port == default_port)
+ snprintf(helper->name, sizeof(helper->name), "%s", name);
+ else
+ snprintf(helper->name, sizeof(helper->name), "%s-%u", name, id);
+}
+EXPORT_SYMBOL_GPL(nf_ct_helper_init);
+
+int nf_conntrack_helpers_register(struct nf_conntrack_helper *helper,
+ unsigned int n)
+{
+ unsigned int i;
+ int err = 0;
+
+ for (i = 0; i < n; i++) {
+ err = nf_conntrack_helper_register(&helper[i]);
+ if (err < 0)
+ goto err;
+ }
+
+ return err;
+err:
+ if (i > 0)
+ nf_conntrack_helpers_unregister(helper, i);
+ return err;
+}
+EXPORT_SYMBOL_GPL(nf_conntrack_helpers_register);
+
+void nf_conntrack_helpers_unregister(struct nf_conntrack_helper *helper,
+ unsigned int n)
+{
+ while (n-- > 0)
+ nf_conntrack_helper_unregister(&helper[n]);
+}
+EXPORT_SYMBOL_GPL(nf_conntrack_helpers_unregister);
+
static struct nf_ct_ext_type helper_extend __read_mostly = {
.len = sizeof(struct nf_conn_help),
.align = __alignof__(struct nf_conn_help),
ports[ports_c++] = IRC_PORT;
for (i = 0; i < ports_c; i++) {
- irc[i].tuple.src.l3num = AF_INET;
- irc[i].tuple.src.u.tcp.port = htons(ports[i]);
- irc[i].tuple.dst.protonum = IPPROTO_TCP;
- irc[i].expect_policy = &irc_exp_policy;
- irc[i].me = THIS_MODULE;
- irc[i].help = help;
-
- if (ports[i] == IRC_PORT)
- sprintf(irc[i].name, "irc");
- else
- sprintf(irc[i].name, "irc-%u", i);
-
- ret = nf_conntrack_helper_register(&irc[i]);
- if (ret) {
- pr_err("failed to register helper for pf: %u port: %u\n",
- irc[i].tuple.src.l3num, ports[i]);
- ports_c = i;
- nf_conntrack_irc_fini();
- return ret;
- }
+ nf_ct_helper_init(&irc[i], AF_INET, IPPROTO_TCP, "irc",
+ IRC_PORT, ports[i], i, &irc_exp_policy,
+ 0, 0, help, NULL, THIS_MODULE);
+ }
+
+ ret = nf_conntrack_helpers_register(&irc[0], ports_c);
+ if (ret) {
+ pr_err("failed to register helpers\n");
+ kfree(irc_buffer);
+ return ret;
}
+
return 0;
}
* it is needed by the init function */
static void nf_conntrack_irc_fini(void)
{
- int i;
-
- for (i = 0; i < ports_c; i++)
- nf_conntrack_helper_unregister(&irc[i]);
+ nf_conntrack_helpers_unregister(irc, ports_c);
kfree(irc_buffer);
}
return ret;
}
-static struct nf_conntrack_helper sane[MAX_PORTS][2] __read_mostly;
+static struct nf_conntrack_helper sane[MAX_PORTS * 2] __read_mostly;
static const struct nf_conntrack_expect_policy sane_exp_policy = {
.max_expected = 1,
/* don't make this __exit, since it's called from __init ! */
static void nf_conntrack_sane_fini(void)
{
- int i, j;
-
- for (i = 0; i < ports_c; i++) {
- for (j = 0; j < 2; j++) {
- pr_debug("unregistering helper for pf: %d port: %d\n",
- sane[i][j].tuple.src.l3num, ports[i]);
- nf_conntrack_helper_unregister(&sane[i][j]);
- }
- }
-
+ nf_conntrack_helpers_unregister(sane, ports_c * 2);
kfree(sane_buffer);
}
static int __init nf_conntrack_sane_init(void)
{
- int i, j = -1, ret = 0;
+ int i, ret = 0;
sane_buffer = kmalloc(65536, GFP_KERNEL);
if (!sane_buffer)
/* FIXME should be configurable whether IPv4 and IPv6 connections
are tracked or not - YK */
for (i = 0; i < ports_c; i++) {
- sane[i][0].tuple.src.l3num = PF_INET;
- sane[i][1].tuple.src.l3num = PF_INET6;
- for (j = 0; j < 2; j++) {
- sane[i][j].data_len = sizeof(struct nf_ct_sane_master);
- sane[i][j].tuple.src.u.tcp.port = htons(ports[i]);
- sane[i][j].tuple.dst.protonum = IPPROTO_TCP;
- sane[i][j].expect_policy = &sane_exp_policy;
- sane[i][j].me = THIS_MODULE;
- sane[i][j].help = help;
- if (ports[i] == SANE_PORT)
- sprintf(sane[i][j].name, "sane");
- else
- sprintf(sane[i][j].name, "sane-%d", ports[i]);
-
- pr_debug("registering helper for pf: %d port: %d\n",
- sane[i][j].tuple.src.l3num, ports[i]);
- ret = nf_conntrack_helper_register(&sane[i][j]);
- if (ret) {
- pr_err("failed to register helper for pf: %d port: %d\n",
- sane[i][j].tuple.src.l3num, ports[i]);
- ports_c = i;
- nf_conntrack_sane_fini();
- return ret;
- }
- }
+ nf_ct_helper_init(&sane[2 * i], AF_INET, IPPROTO_TCP, "sane",
+ SANE_PORT, ports[i], ports[i],
+ &sane_exp_policy, 0,
+ sizeof(struct nf_ct_sane_master), help, NULL,
+ THIS_MODULE);
+ nf_ct_helper_init(&sane[2 * i + 1], AF_INET6, IPPROTO_TCP, "sane",
+ SANE_PORT, ports[i], ports[i],
+ &sane_exp_policy, 0,
+ sizeof(struct nf_ct_sane_master), help, NULL,
+ THIS_MODULE);
+ }
+
+ ret = nf_conntrack_helpers_register(sane, ports_c * 2);
+ if (ret < 0) {
+ pr_err("failed to register helpers\n");
+ kfree(sane_buffer);
+ return ret;
}
return 0;
return process_sip_msg(skb, ct, protoff, dataoff, &dptr, &datalen);
}
-static struct nf_conntrack_helper sip[MAX_PORTS][4] __read_mostly;
+static struct nf_conntrack_helper sip[MAX_PORTS * 4] __read_mostly;
static const struct nf_conntrack_expect_policy sip_exp_policy[SIP_EXPECT_MAX + 1] = {
[SIP_EXPECT_SIGNALLING] = {
static void nf_conntrack_sip_fini(void)
{
- int i, j;
-
- for (i = 0; i < ports_c; i++) {
- for (j = 0; j < ARRAY_SIZE(sip[i]); j++) {
- if (sip[i][j].me == NULL)
- continue;
- nf_conntrack_helper_unregister(&sip[i][j]);
- }
- }
+ nf_conntrack_helpers_unregister(sip, ports_c * 4);
}
static int __init nf_conntrack_sip_init(void)
{
- int i, j, ret;
+ int i, ret;
if (ports_c == 0)
ports[ports_c++] = SIP_PORT;
for (i = 0; i < ports_c; i++) {
memset(&sip[i], 0, sizeof(sip[i]));
- sip[i][0].tuple.src.l3num = AF_INET;
- sip[i][0].tuple.dst.protonum = IPPROTO_UDP;
- sip[i][0].help = sip_help_udp;
- sip[i][1].tuple.src.l3num = AF_INET;
- sip[i][1].tuple.dst.protonum = IPPROTO_TCP;
- sip[i][1].help = sip_help_tcp;
-
- sip[i][2].tuple.src.l3num = AF_INET6;
- sip[i][2].tuple.dst.protonum = IPPROTO_UDP;
- sip[i][2].help = sip_help_udp;
- sip[i][3].tuple.src.l3num = AF_INET6;
- sip[i][3].tuple.dst.protonum = IPPROTO_TCP;
- sip[i][3].help = sip_help_tcp;
-
- for (j = 0; j < ARRAY_SIZE(sip[i]); j++) {
- sip[i][j].data_len = sizeof(struct nf_ct_sip_master);
- sip[i][j].tuple.src.u.udp.port = htons(ports[i]);
- sip[i][j].expect_policy = sip_exp_policy;
- sip[i][j].expect_class_max = SIP_EXPECT_MAX;
- sip[i][j].me = THIS_MODULE;
-
- if (ports[i] == SIP_PORT)
- sprintf(sip[i][j].name, "sip");
- else
- sprintf(sip[i][j].name, "sip-%u", i);
-
- pr_debug("port #%u: %u\n", i, ports[i]);
+ nf_ct_helper_init(&sip[4 * i], AF_INET, IPPROTO_UDP, "sip",
+ SIP_PORT, ports[i], i, sip_exp_policy,
+ SIP_EXPECT_MAX,
+ sizeof(struct nf_ct_sip_master), sip_help_udp,
+ NULL, THIS_MODULE);
+ nf_ct_helper_init(&sip[4 * i + 1], AF_INET, IPPROTO_TCP, "sip",
+ SIP_PORT, ports[i], i, sip_exp_policy,
+ SIP_EXPECT_MAX,
+ sizeof(struct nf_ct_sip_master), sip_help_tcp,
+ NULL, THIS_MODULE);
+ nf_ct_helper_init(&sip[4 * i + 2], AF_INET6, IPPROTO_UDP, "sip",
+ SIP_PORT, ports[i], i, sip_exp_policy,
+ SIP_EXPECT_MAX,
+ sizeof(struct nf_ct_sip_master), sip_help_udp,
+ NULL, THIS_MODULE);
+ nf_ct_helper_init(&sip[4 * i + 3], AF_INET6, IPPROTO_TCP, "sip",
+ SIP_PORT, ports[i], i, sip_exp_policy,
+ SIP_EXPECT_MAX,
+ sizeof(struct nf_ct_sip_master), sip_help_tcp,
+ NULL, THIS_MODULE);
+ }
- ret = nf_conntrack_helper_register(&sip[i][j]);
- if (ret) {
- pr_err("failed to register helper for pf: %u port: %u\n",
- sip[i][j].tuple.src.l3num, ports[i]);
- ports_c = i;
- nf_conntrack_sip_fini();
- return ret;
- }
- }
+ ret = nf_conntrack_helpers_register(sip, ports_c * 4);
+ if (ret < 0) {
+ pr_err("failed to register helpers\n");
+ return ret;
}
return 0;
}
return ret;
}
-static struct nf_conntrack_helper tftp[MAX_PORTS][2] __read_mostly;
+static struct nf_conntrack_helper tftp[MAX_PORTS * 2] __read_mostly;
static const struct nf_conntrack_expect_policy tftp_exp_policy = {
.max_expected = 1,
static void nf_conntrack_tftp_fini(void)
{
- int i, j;
-
- for (i = 0; i < ports_c; i++) {
- for (j = 0; j < 2; j++)
- nf_conntrack_helper_unregister(&tftp[i][j]);
- }
+ nf_conntrack_helpers_unregister(tftp, ports_c * 2);
}
static int __init nf_conntrack_tftp_init(void)
{
- int i, j, ret;
+ int i, ret;
if (ports_c == 0)
ports[ports_c++] = TFTP_PORT;
for (i = 0; i < ports_c; i++) {
- memset(&tftp[i], 0, sizeof(tftp[i]));
-
- tftp[i][0].tuple.src.l3num = AF_INET;
- tftp[i][1].tuple.src.l3num = AF_INET6;
- for (j = 0; j < 2; j++) {
- tftp[i][j].tuple.dst.protonum = IPPROTO_UDP;
- tftp[i][j].tuple.src.u.udp.port = htons(ports[i]);
- tftp[i][j].expect_policy = &tftp_exp_policy;
- tftp[i][j].me = THIS_MODULE;
- tftp[i][j].help = tftp_help;
-
- if (ports[i] == TFTP_PORT)
- sprintf(tftp[i][j].name, "tftp");
- else
- sprintf(tftp[i][j].name, "tftp-%u", i);
-
- ret = nf_conntrack_helper_register(&tftp[i][j]);
- if (ret) {
- pr_err("failed to register helper for pf: %u port: %u\n",
- tftp[i][j].tuple.src.l3num, ports[i]);
- ports_c = i;
- nf_conntrack_tftp_fini();
- return ret;
- }
- }
+ nf_ct_helper_init(&tftp[2 * i], AF_INET, IPPROTO_UDP, "tftp",
+ TFTP_PORT, ports[i], i, &tftp_exp_policy,
+ 0, 0, tftp_help, NULL, THIS_MODULE);
+ nf_ct_helper_init(&tftp[2 * i + 1], AF_INET6, IPPROTO_UDP, "tftp",
+ TFTP_PORT, ports[i], i, &tftp_exp_policy,
+ 0, 0, tftp_help, NULL, THIS_MODULE);
+ }
+
+ ret = nf_conntrack_helpers_register(tftp, ports_c * 2);
+ if (ret < 0) {
+ pr_err("failed to register helpers\n");
+ return ret;
}
return 0;
}
projects / kernel.git / commitdiff