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[NETFILTER] ip6tables: whitespace and indent cosmetic cleanup
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Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Yasuyuki Kozakai authored and David S. Miller committed Jan 17, 2006
1 parent e0069ca commit f0daaa6
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Showing 7 changed files with 427 additions and 422 deletions.
151 changes: 75 additions & 76 deletions net/ipv6/netfilter/ip6t_dst.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -36,19 +36,19 @@ MODULE_AUTHOR("Andras Kis-Szabo <kisza@sch.bme.hu>");
#endif

/*
* (Type & 0xC0) >> 6
* 0 -> ignorable
* 1 -> must drop the packet
* 2 -> send ICMP PARM PROB regardless and drop packet
* 3 -> Send ICMP if not a multicast address and drop packet
* (Type & 0xC0) >> 6
* 0 -> ignorable
* 1 -> must drop the packet
* 2 -> send ICMP PARM PROB regardless and drop packet
* 3 -> Send ICMP if not a multicast address and drop packet
* (Type & 0x20) >> 5
* 0 -> invariant
* 1 -> can change the routing
* 0 -> invariant
* 1 -> can change the routing
* (Type & 0x1F) Type
* 0 -> Pad1 (only 1 byte!)
* 1 -> PadN LENGTH info (total length = length + 2)
* C0 | 2 -> JUMBO 4 x x x x ( xxxx > 64k )
* 5 -> RTALERT 2 x x
* 0 -> Pad1 (only 1 byte!)
* 1 -> PadN LENGTH info (total length = length + 2)
* C0 | 2 -> JUMBO 4 x x x x ( xxxx > 64k )
* 5 -> RTALERT 2 x x
*/

static int
Expand All @@ -60,59 +60,58 @@ match(const struct sk_buff *skb,
unsigned int protoff,
int *hotdrop)
{
struct ipv6_opt_hdr _optsh, *oh;
const struct ip6t_opts *optinfo = matchinfo;
unsigned int temp;
unsigned int ptr;
unsigned int hdrlen = 0;
unsigned int ret = 0;
u8 _opttype, *tp = NULL;
u8 _optlen, *lp = NULL;
unsigned int optlen;
struct ipv6_opt_hdr _optsh, *oh;
const struct ip6t_opts *optinfo = matchinfo;
unsigned int temp;
unsigned int ptr;
unsigned int hdrlen = 0;
unsigned int ret = 0;
u8 _opttype, *tp = NULL;
u8 _optlen, *lp = NULL;
unsigned int optlen;

#if HOPBYHOP
if (ipv6_find_hdr(skb, &ptr, NEXTHDR_HOP, NULL) < 0)
#else
if (ipv6_find_hdr(skb, &ptr, NEXTHDR_DEST, NULL) < 0)
#endif
return 0;

oh = skb_header_pointer(skb, ptr, sizeof(_optsh), &_optsh);
if (oh == NULL){
*hotdrop = 1;
return 0;
}

hdrlen = ipv6_optlen(oh);
if (skb->len - ptr < hdrlen){
/* Packet smaller than it's length field */
return 0;
}

DEBUGP("IPv6 OPTS LEN %u %u ", hdrlen, oh->hdrlen);

DEBUGP("len %02X %04X %02X ",
optinfo->hdrlen, hdrlen,
(!(optinfo->flags & IP6T_OPTS_LEN) ||
((optinfo->hdrlen == hdrlen) ^
!!(optinfo->invflags & IP6T_OPTS_INV_LEN))));

ret = (oh != NULL)
&&
(!(optinfo->flags & IP6T_OPTS_LEN) ||
((optinfo->hdrlen == hdrlen) ^
!!(optinfo->invflags & IP6T_OPTS_INV_LEN)));

ptr += 2;
hdrlen -= 2;
if ( !(optinfo->flags & IP6T_OPTS_OPTS) ){
return ret;
oh = skb_header_pointer(skb, ptr, sizeof(_optsh), &_optsh);
if (oh == NULL) {
*hotdrop = 1;
return 0;
}

hdrlen = ipv6_optlen(oh);
if (skb->len - ptr < hdrlen) {
/* Packet smaller than it's length field */
return 0;
}

DEBUGP("IPv6 OPTS LEN %u %u ", hdrlen, oh->hdrlen);

DEBUGP("len %02X %04X %02X ",
optinfo->hdrlen, hdrlen,
(!(optinfo->flags & IP6T_OPTS_LEN) ||
((optinfo->hdrlen == hdrlen) ^
!!(optinfo->invflags & IP6T_OPTS_INV_LEN))));

ret = (oh != NULL) &&
(!(optinfo->flags & IP6T_OPTS_LEN) ||
((optinfo->hdrlen == hdrlen) ^
!!(optinfo->invflags & IP6T_OPTS_INV_LEN)));

ptr += 2;
hdrlen -= 2;
if (!(optinfo->flags & IP6T_OPTS_OPTS)) {
return ret;
} else if (optinfo->flags & IP6T_OPTS_NSTRICT) {
DEBUGP("Not strict - not implemented");
} else {
DEBUGP("Strict ");
DEBUGP("#%d ",optinfo->optsnr);
for(temp=0; temp<optinfo->optsnr; temp++){
DEBUGP("#%d ", optinfo->optsnr);
for (temp = 0; temp < optinfo->optsnr; temp++) {
/* type field exists ? */
if (hdrlen < 1)
break;
Expand All @@ -122,10 +121,10 @@ match(const struct sk_buff *skb,
break;

/* Type check */
if (*tp != (optinfo->opts[temp] & 0xFF00)>>8){
if (*tp != (optinfo->opts[temp] & 0xFF00) >> 8) {
DEBUGP("Tbad %02X %02X\n",
*tp,
(optinfo->opts[temp] & 0xFF00)>>8);
(optinfo->opts[temp] & 0xFF00) >> 8);
return 0;
} else {
DEBUGP("Tok ");
Expand Down Expand Up @@ -169,7 +168,8 @@ match(const struct sk_buff *skb,
}
if (temp == optinfo->optsnr)
return ret;
else return 0;
else
return 0;
}

return 0;
Expand All @@ -178,25 +178,24 @@ match(const struct sk_buff *skb,
/* Called when user tries to insert an entry of this type. */
static int
checkentry(const char *tablename,
const void *info,
void *matchinfo,
unsigned int matchinfosize,
unsigned int hook_mask)
const void *info,
void *matchinfo,
unsigned int matchinfosize,
unsigned int hook_mask)
{
const struct ip6t_opts *optsinfo = matchinfo;

if (matchinfosize != IP6T_ALIGN(sizeof(struct ip6t_opts))) {
DEBUGP("ip6t_opts: matchsize %u != %u\n",
matchinfosize, IP6T_ALIGN(sizeof(struct ip6t_opts)));
return 0;
}
if (optsinfo->invflags & ~IP6T_OPTS_INV_MASK) {
DEBUGP("ip6t_opts: unknown flags %X\n",
optsinfo->invflags);
return 0;
}

return 1;
const struct ip6t_opts *optsinfo = matchinfo;

if (matchinfosize != IP6T_ALIGN(sizeof(struct ip6t_opts))) {
DEBUGP("ip6t_opts: matchsize %u != %u\n",
matchinfosize, IP6T_ALIGN(sizeof(struct ip6t_opts)));
return 0;
}
if (optsinfo->invflags & ~IP6T_OPTS_INV_MASK) {
DEBUGP("ip6t_opts: unknown flags %X\n", optsinfo->invflags);
return 0;
}

return 1;
}

static struct ip6t_match opts_match = {
Expand All @@ -212,12 +211,12 @@ static struct ip6t_match opts_match = {

static int __init init(void)
{
return ip6t_register_match(&opts_match);
return ip6t_register_match(&opts_match);
}

static void __exit cleanup(void)
{
ip6t_unregister_match(&opts_match);
ip6t_unregister_match(&opts_match);
}

module_init(init);
Expand Down
68 changes: 34 additions & 34 deletions net/ipv6/netfilter/ip6t_eui64.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -27,45 +27,45 @@ match(const struct sk_buff *skb,
unsigned int protoff,
int *hotdrop)
{
unsigned char eui64[8];
int i = 0;

unsigned char eui64[8];
int i=0;

if ( !(skb->mac.raw >= skb->head
&& (skb->mac.raw + ETH_HLEN) <= skb->data)
&& offset != 0) {
*hotdrop = 1;
return 0;
}

memset(eui64, 0, sizeof(eui64));

if (eth_hdr(skb)->h_proto == ntohs(ETH_P_IPV6)) {
if (skb->nh.ipv6h->version == 0x6) {
memcpy(eui64, eth_hdr(skb)->h_source, 3);
memcpy(eui64 + 5, eth_hdr(skb)->h_source + 3, 3);
eui64[3]=0xff;
eui64[4]=0xfe;
eui64[0] |= 0x02;

i=0;
while ((skb->nh.ipv6h->saddr.s6_addr[8+i] ==
eui64[i]) && (i<8)) i++;

if ( i == 8 )
return 1;
}
}

return 0;
if (!(skb->mac.raw >= skb->head &&
(skb->mac.raw + ETH_HLEN) <= skb->data) &&
offset != 0) {
*hotdrop = 1;
return 0;
}

memset(eui64, 0, sizeof(eui64));

if (eth_hdr(skb)->h_proto == ntohs(ETH_P_IPV6)) {
if (skb->nh.ipv6h->version == 0x6) {
memcpy(eui64, eth_hdr(skb)->h_source, 3);
memcpy(eui64 + 5, eth_hdr(skb)->h_source + 3, 3);
eui64[3] = 0xff;
eui64[4] = 0xfe;
eui64[0] |= 0x02;

i = 0;
while ((skb->nh.ipv6h->saddr.s6_addr[8+i] == eui64[i])
&& (i < 8))
i++;

if (i == 8)
return 1;
}
}

return 0;
}

static int
ip6t_eui64_checkentry(const char *tablename,
const void *ip,
void *matchinfo,
unsigned int matchsize,
unsigned int hook_mask)
const void *ip,
void *matchinfo,
unsigned int matchsize,
unsigned int hook_mask)
{
if (hook_mask
& ~((1 << NF_IP6_PRE_ROUTING) | (1 << NF_IP6_LOCAL_IN) |
Expand Down
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