-/* Kernel module to match one of a list of TCP/UDP/SCTP/DCCP ports: ports are in
- the same place so we can treat them as equal. */
+/* Kernel module to match one of a list of TCP/UDP(-Lite)/SCTP/DCCP ports:
+ ports are in the same place so we can treat them as equal. */
/* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
#endif
/* Returns 1 if the port is matched by the test, 0 otherwise. */
-static inline int
+static inline bool
ports_match(const u_int16_t *portlist, enum xt_multiport_flags flags,
u_int8_t count, u_int16_t src, u_int16_t dst)
{
unsigned int i;
for (i = 0; i < count; i++) {
if (flags != XT_MULTIPORT_DESTINATION && portlist[i] == src)
- return 1;
+ return true;
if (flags != XT_MULTIPORT_SOURCE && portlist[i] == dst)
- return 1;
+ return true;
}
- return 0;
+ return false;
}
/* Returns 1 if the port is matched by the test, 0 otherwise. */
-static inline int
+static inline bool
ports_match_v1(const struct xt_multiport_v1 *minfo,
u_int16_t src, u_int16_t dst)
{
if (minfo->flags == XT_MULTIPORT_SOURCE
&& src >= s && src <= e)
- return 1 ^ minfo->invert;
+ return true ^ minfo->invert;
if (minfo->flags == XT_MULTIPORT_DESTINATION
&& dst >= s && dst <= e)
- return 1 ^ minfo->invert;
+ return true ^ minfo->invert;
if (minfo->flags == XT_MULTIPORT_EITHER
&& ((dst >= s && dst <= e)
|| (src >= s && src <= e)))
- return 1 ^ minfo->invert;
+ return true ^ minfo->invert;
} else {
/* exact port matching */
duprintf("src or dst matches with %d?\n", s);
if (minfo->flags == XT_MULTIPORT_SOURCE
&& src == s)
- return 1 ^ minfo->invert;
+ return true ^ minfo->invert;
if (minfo->flags == XT_MULTIPORT_DESTINATION
&& dst == s)
- return 1 ^ minfo->invert;
+ return true ^ minfo->invert;
if (minfo->flags == XT_MULTIPORT_EITHER
&& (src == s || dst == s))
- return 1 ^ minfo->invert;
+ return true ^ minfo->invert;
}
}
- return minfo->invert;
+ return minfo->invert;
}
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const void *matchinfo,
int offset,
unsigned int protoff,
- int *hotdrop)
+ bool *hotdrop)
{
- u16 _ports[2], *pptr;
+ __be16 _ports[2], *pptr;
const struct xt_multiport *multiinfo = matchinfo;
if (offset)
- return 0;
+ return false;
pptr = skb_header_pointer(skb, protoff, sizeof(_ports), _ports);
if (pptr == NULL) {
* can't. Hence, no choice but to drop.
*/
duprintf("xt_multiport: Dropping evil offset=0 tinygram.\n");
- *hotdrop = 1;
- return 0;
+ *hotdrop = true;
+ return false;
}
return ports_match(multiinfo->ports,
ntohs(pptr[0]), ntohs(pptr[1]));
}
-static int
+static bool
match_v1(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const void *matchinfo,
int offset,
unsigned int protoff,
- int *hotdrop)
+ bool *hotdrop)
{
- u16 _ports[2], *pptr;
+ __be16 _ports[2], *pptr;
const struct xt_multiport_v1 *multiinfo = matchinfo;
if (offset)
- return 0;
+ return false;
pptr = skb_header_pointer(skb, protoff, sizeof(_ports), _ports);
if (pptr == NULL) {
* can't. Hence, no choice but to drop.
*/
duprintf("xt_multiport: Dropping evil offset=0 tinygram.\n");
- *hotdrop = 1;
- return 0;
+ *hotdrop = true;
+ return false;
}
return ports_match_v1(multiinfo, ntohs(pptr[0]), ntohs(pptr[1]));
}
-static inline int
+static inline bool
check(u_int16_t proto,
u_int8_t ip_invflags,
u_int8_t match_flags,
{
/* Must specify supported protocol, no unknown flags or bad count */
return (proto == IPPROTO_TCP || proto == IPPROTO_UDP
+ || proto == IPPROTO_UDPLITE
|| proto == IPPROTO_SCTP || proto == IPPROTO_DCCP)
&& !(ip_invflags & XT_INV_PROTO)
&& (match_flags == XT_MULTIPORT_SOURCE
}
/* Called when user tries to insert an entry of this type. */
-static int
+static bool
checkentry(const char *tablename,
const void *info,
const struct xt_match *match,
void *matchinfo,
- unsigned int matchsize,
unsigned int hook_mask)
{
const struct ipt_ip *ip = info;
multiinfo->count);
}
-static int
+static bool
checkentry_v1(const char *tablename,
const void *info,
const struct xt_match *match,
void *matchinfo,
- unsigned int matchsize,
unsigned int hook_mask)
{
const struct ipt_ip *ip = info;
multiinfo->count);
}
-static int
+static bool
checkentry6(const char *tablename,
const void *info,
const struct xt_match *match,
void *matchinfo,
- unsigned int matchsize,
unsigned int hook_mask)
{
const struct ip6t_ip6 *ip = info;
multiinfo->count);
}
-static int
+static bool
checkentry6_v1(const char *tablename,
const void *info,
const struct xt_match *match,
void *matchinfo,
- unsigned int matchsize,
unsigned int hook_mask)
{
const struct ip6t_ip6 *ip = info;
multiinfo->count);
}
-static struct xt_match multiport_match = {
- .name = "multiport",
- .revision = 0,
- .matchsize = sizeof(struct xt_multiport),
- .match = &match,
- .checkentry = &checkentry,
- .family = AF_INET,
- .me = THIS_MODULE,
-};
-
-static struct xt_match multiport_match_v1 = {
- .name = "multiport",
- .revision = 1,
- .matchsize = sizeof(struct xt_multiport_v1),
- .match = &match_v1,
- .checkentry = &checkentry_v1,
- .family = AF_INET,
- .me = THIS_MODULE,
-};
-
-static struct xt_match multiport6_match = {
- .name = "multiport",
- .revision = 0,
- .matchsize = sizeof(struct xt_multiport),
- .match = &match,
- .checkentry = &checkentry6,
- .family = AF_INET6,
- .me = THIS_MODULE,
-};
-
-static struct xt_match multiport6_match_v1 = {
- .name = "multiport",
- .revision = 1,
- .matchsize = sizeof(struct xt_multiport_v1),
- .match = &match_v1,
- .checkentry = &checkentry6_v1,
- .family = AF_INET6,
- .me = THIS_MODULE,
+static struct xt_match xt_multiport_match[] __read_mostly = {
+ {
+ .name = "multiport",
+ .family = AF_INET,
+ .revision = 0,
+ .checkentry = checkentry,
+ .match = match,
+ .matchsize = sizeof(struct xt_multiport),
+ .me = THIS_MODULE,
+ },
+ {
+ .name = "multiport",
+ .family = AF_INET,
+ .revision = 1,
+ .checkentry = checkentry_v1,
+ .match = match_v1,
+ .matchsize = sizeof(struct xt_multiport_v1),
+ .me = THIS_MODULE,
+ },
+ {
+ .name = "multiport",
+ .family = AF_INET6,
+ .revision = 0,
+ .checkentry = checkentry6,
+ .match = match,
+ .matchsize = sizeof(struct xt_multiport),
+ .me = THIS_MODULE,
+ },
+ {
+ .name = "multiport",
+ .family = AF_INET6,
+ .revision = 1,
+ .checkentry = checkentry6_v1,
+ .match = match_v1,
+ .matchsize = sizeof(struct xt_multiport_v1),
+ .me = THIS_MODULE,
+ },
};
static int __init xt_multiport_init(void)
{
- int ret;
-
- ret = xt_register_match(&multiport_match);
- if (ret)
- goto out;
-
- ret = xt_register_match(&multiport_match_v1);
- if (ret)
- goto out_unreg_multi_v0;
-
- ret = xt_register_match(&multiport6_match);
- if (ret)
- goto out_unreg_multi_v1;
-
- ret = xt_register_match(&multiport6_match_v1);
- if (ret)
- goto out_unreg_multi6_v0;
-
- return ret;
-
-out_unreg_multi6_v0:
- xt_unregister_match(&multiport6_match);
-out_unreg_multi_v1:
- xt_unregister_match(&multiport_match_v1);
-out_unreg_multi_v0:
- xt_unregister_match(&multiport_match);
-out:
- return ret;
+ return xt_register_matches(xt_multiport_match,
+ ARRAY_SIZE(xt_multiport_match));
}
static void __exit xt_multiport_fini(void)
{
- xt_unregister_match(&multiport_match);
- xt_unregister_match(&multiport_match_v1);
- xt_unregister_match(&multiport6_match);
- xt_unregister_match(&multiport6_match_v1);
+ xt_unregister_matches(xt_multiport_match,
+ ARRAY_SIZE(xt_multiport_match));
}
module_init(xt_multiport_init);
projects / linux-2.6-omap-h63xx.git / blobdiff