#endif
/* Returns 1 if the id is matched by the range, 0 otherwise */
-static inline int
-segsleft_match(u_int32_t min, u_int32_t max, u_int32_t id, int invert)
+static inline bool
+segsleft_match(u_int32_t min, u_int32_t max, u_int32_t id, bool invert)
{
- int r = 0;
+ bool r;
DEBUGP("rt segsleft_match:%c 0x%x <= 0x%x <= 0x%x",
invert ? '!' : ' ', min, id, max);
r = (id >= min && id <= max) ^ invert;
return r;
}
-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)
{
- struct ipv6_rt_hdr _route, *rh;
+ struct ipv6_rt_hdr _route;
+ const struct ipv6_rt_hdr *rh;
const struct ip6t_rt *rtinfo = matchinfo;
unsigned int temp;
unsigned int ptr;
unsigned int hdrlen = 0;
- unsigned int ret = 0;
- struct in6_addr *ap, _addr;
+ bool ret = false;
+ struct in6_addr _addr;
+ const struct in6_addr *ap;
int err;
err = ipv6_find_hdr(skb, &ptr, NEXTHDR_ROUTING, NULL);
if (err < 0) {
if (err != -ENOENT)
- *hotdrop = 1;
- return 0;
+ *hotdrop = true;
+ return false;
}
rh = skb_header_pointer(skb, ptr, sizeof(_route), &_route);
if (rh == NULL) {
- *hotdrop = 1;
- return 0;
+ *hotdrop = true;
+ return false;
}
hdrlen = ipv6_optlen(rh);
if (skb->len - ptr < hdrlen) {
/* Pcket smaller than its length field */
- return 0;
+ return false;
}
DEBUGP("IPv6 RT LEN %u %u ", hdrlen, rh->hdrlen);
DEBUGP("SGS_LEFT %u %02X\n", rh->segments_left, rh->segments_left);
DEBUGP("IPv6 RT segsleft %02X ",
- (segsleft_match(rtinfo->segsleft[0], rtinfo->segsleft[1],
- rh->segments_left,
- !!(rtinfo->invflags & IP6T_RT_INV_SGS))));
+ segsleft_match(rtinfo->segsleft[0], rtinfo->segsleft[1],
+ rh->segments_left,
+ !!(rtinfo->invflags & IP6T_RT_INV_SGS)));
DEBUGP("type %02X %02X %02X ",
rtinfo->rt_type, rh->type,
(!(rtinfo->flags & IP6T_RT_TYP) ||
!!(rtinfo->invflags & IP6T_RT_INV_TYP))));
DEBUGP("len %02X %04X %02X ",
rtinfo->hdrlen, hdrlen,
- (!(rtinfo->flags & IP6T_RT_LEN) ||
+ !(rtinfo->flags & IP6T_RT_LEN) ||
((rtinfo->hdrlen == hdrlen) ^
- !!(rtinfo->invflags & IP6T_RT_INV_LEN))));
+ !!(rtinfo->invflags & IP6T_RT_INV_LEN)));
DEBUGP("res %02X %02X %02X ",
- (rtinfo->flags & IP6T_RT_RES),
- ((struct rt0_hdr *)rh)->reserved,
+ rtinfo->flags & IP6T_RT_RES,
+ ((const struct rt0_hdr *)rh)->reserved,
!((rtinfo->flags & IP6T_RT_RES) &&
- (((struct rt0_hdr *)rh)->reserved)));
+ (((const struct rt0_hdr *)rh)->reserved)));
ret = (rh != NULL)
&&
DEBUGP("Not strict ");
if (rtinfo->addrnr > (unsigned int)((hdrlen - 8) / 16)) {
DEBUGP("There isn't enough space\n");
- return 0;
+ return false;
} else {
unsigned int i = 0;
if (i == rtinfo->addrnr)
return ret;
else
- return 0;
+ return false;
}
} else {
DEBUGP("Strict ");
if (rtinfo->addrnr > (unsigned int)((hdrlen - 8) / 16)) {
DEBUGP("There isn't enough space\n");
- return 0;
+ return false;
} else {
DEBUGP("#%d ", rtinfo->addrnr);
for (temp = 0; temp < rtinfo->addrnr; temp++) {
break;
}
DEBUGP("temp=%d #%d\n", temp, rtinfo->addrnr);
- if ((temp == rtinfo->addrnr) &&
- (temp == (unsigned int)((hdrlen - 8) / 16)))
+ if (temp == rtinfo->addrnr &&
+ temp == (unsigned int)((hdrlen - 8) / 16))
return ret;
else
- return 0;
+ return false;
}
}
- return 0;
+ return false;
}
/* Called when user tries to insert an entry of this type. */
-static int
+static bool
checkentry(const char *tablename,
const void *entry,
const struct xt_match *match,
if (rtinfo->invflags & ~IP6T_RT_INV_MASK) {
DEBUGP("ip6t_rt: unknown flags %X\n", rtinfo->invflags);
- return 0;
+ return false;
}
if ((rtinfo->flags & (IP6T_RT_RES | IP6T_RT_FST_MASK)) &&
(!(rtinfo->flags & IP6T_RT_TYP) ||
(rtinfo->rt_type != 0) ||
(rtinfo->invflags & IP6T_RT_INV_TYP))) {
DEBUGP("`--rt-type 0' required before `--rt-0-*'");
- return 0;
+ return false;
}
- return 1;
+ return true;
}
static struct xt_match rt_match = {