MODULE_LICENSE("GPL");
MODULE_AUTHOR("Kiran Kumar Immidi");
-MODULE_DESCRIPTION("Match for SCTP protocol packets");
+MODULE_DESCRIPTION("Xtables: SCTP protocol packet match");
MODULE_ALIAS("ipt_sctp");
MODULE_ALIAS("ip6t_sctp");
static inline bool
match_packet(const struct sk_buff *skb,
unsigned int offset,
- const u_int32_t *chunkmap,
- int chunk_match_type,
- const struct xt_sctp_flag_info *flag_info,
- const int flag_count,
+ const struct xt_sctp_info *info,
bool *hotdrop)
{
u_int32_t chunkmapcopy[256 / sizeof (u_int32_t)];
sctp_chunkhdr_t _sch, *sch;
+ int chunk_match_type = info->chunk_match_type;
+ const struct xt_sctp_flag_info *flag_info = info->flag_info;
+ int flag_count = info->flag_count;
#ifdef DEBUG_SCTP
int i = 0;
#endif
if (chunk_match_type == SCTP_CHUNK_MATCH_ALL)
- SCTP_CHUNKMAP_COPY(chunkmapcopy, chunkmap);
+ SCTP_CHUNKMAP_COPY(chunkmapcopy, info->chunkmap);
do {
sch = skb_header_pointer(skb, offset, sizeof(_sch), &_sch);
duprintf("skb->len: %d\toffset: %d\n", skb->len, offset);
- if (SCTP_CHUNKMAP_IS_SET(chunkmap, sch->type)) {
+ if (SCTP_CHUNKMAP_IS_SET(info->chunkmap, sch->type)) {
switch (chunk_match_type) {
case SCTP_CHUNK_MATCH_ANY:
if (match_flags(flag_info, flag_count,
switch (chunk_match_type) {
case SCTP_CHUNK_MATCH_ALL:
- return SCTP_CHUNKMAP_IS_CLEAR(chunkmap);
+ return SCTP_CHUNKMAP_IS_CLEAR(info->chunkmap);
case SCTP_CHUNK_MATCH_ANY:
return false;
case SCTP_CHUNK_MATCH_ONLY:
}
static bool
-match(const struct sk_buff *skb,
- const struct net_device *in,
- const struct net_device *out,
- const struct xt_match *match,
- const void *matchinfo,
- int offset,
- unsigned int protoff,
- bool *hotdrop)
+sctp_mt(const struct sk_buff *skb, const struct net_device *in,
+ const struct net_device *out, const struct xt_match *match,
+ const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop)
{
const struct xt_sctp_info *info = matchinfo;
sctp_sctphdr_t _sh, *sh;
&& ntohs(sh->dest) <= info->dpts[1],
XT_SCTP_DEST_PORTS, info->flags, info->invflags)
&& SCCHECK(match_packet(skb, protoff + sizeof (sctp_sctphdr_t),
- info->chunkmap, info->chunk_match_type,
- info->flag_info, info->flag_count,
- hotdrop),
+ info, hotdrop),
XT_SCTP_CHUNK_TYPES, info->flags, info->invflags);
}
static bool
-checkentry(const char *tablename,
- const void *inf,
- const struct xt_match *match,
- void *matchinfo,
- unsigned int hook_mask)
+sctp_mt_check(const char *tablename, const void *inf,
+ const struct xt_match *match, void *matchinfo,
+ unsigned int hook_mask)
{
const struct xt_sctp_info *info = matchinfo;
| SCTP_CHUNK_MATCH_ONLY)));
}
-static struct xt_match xt_sctp_match[] __read_mostly = {
+static struct xt_match sctp_mt_reg[] __read_mostly = {
{
.name = "sctp",
.family = AF_INET,
- .checkentry = checkentry,
- .match = match,
+ .checkentry = sctp_mt_check,
+ .match = sctp_mt,
.matchsize = sizeof(struct xt_sctp_info),
.proto = IPPROTO_SCTP,
.me = THIS_MODULE
{
.name = "sctp",
.family = AF_INET6,
- .checkentry = checkentry,
- .match = match,
+ .checkentry = sctp_mt_check,
+ .match = sctp_mt,
.matchsize = sizeof(struct xt_sctp_info),
.proto = IPPROTO_SCTP,
.me = THIS_MODULE
},
};
-static int __init xt_sctp_init(void)
+static int __init sctp_mt_init(void)
{
- return xt_register_matches(xt_sctp_match, ARRAY_SIZE(xt_sctp_match));
+ return xt_register_matches(sctp_mt_reg, ARRAY_SIZE(sctp_mt_reg));
}
-static void __exit xt_sctp_fini(void)
+static void __exit sctp_mt_exit(void)
{
- xt_unregister_matches(xt_sctp_match, ARRAY_SIZE(xt_sctp_match));
+ xt_unregister_matches(sctp_mt_reg, ARRAY_SIZE(sctp_mt_reg));
}
-module_init(xt_sctp_init);
-module_exit(xt_sctp_fini);
+module_init(sctp_mt_init);
+module_exit(sctp_mt_exit);