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[NETFILTER]: Add goto target

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Originally written by Henrik Nordstrom <hno@marasystems.com>, taken
from netfilter patch-o-matic and added ip6_tables support.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2005-08-21 23:31:43 -07:00 committed by David S. Miller
parent 764d8a9f24
commit 05465343bf
4 changed files with 8 additions and 6 deletions
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3
include/linux/netfilter_ipv4/ip_tables.h
View file

@ -109,7 +109,8 @@ struct ipt_counters
/* Values for "flag" field in struct ipt_ip (general ip structure). */
#define IPT_F_FRAG 0x01 /* Set if rule is a fragment rule */
#define IPT_F_MASK 0x01 /* All possible flag bits mask. */
#define IPT_F_GOTO 0x02 /* Set if jump is a goto */
#define IPT_F_MASK 0x03 /* All possible flag bits mask. */
/* Values for "inv" field in struct ipt_ip. */
#define IPT_INV_VIA_IN 0x01 /* Invert the sense of IN IFACE. */

3
include/linux/netfilter_ipv6/ip6_tables.h
View file

@ -111,7 +111,8 @@ struct ip6t_counters
#define IP6T_F_PROTO 0x01 /* Set if rule cares about upper
protocols */
#define IP6T_F_TOS 0x02 /* Match the TOS. */
#define IP6T_F_MASK 0x03 /* All possible flag bits mask. */
#define IP6T_F_GOTO 0x04 /* Set if jump is a goto */
#define IP6T_F_MASK 0x07 /* All possible flag bits mask. */
/* Values for "inv" field in struct ip6t_ip6. */
#define IP6T_INV_VIA_IN 0x01 /* Invert the sense of IN IFACE. */

4
net/ipv4/netfilter/ip_tables.c
View file

@ -340,8 +340,8 @@ ipt_do_table(struct sk_buff **pskb,
back->comefrom);
continue;
}
if (table_base + v
!= (void *)e + e->next_offset) {
if (table_base + v != (void *)e + e->next_offset
&& !(e->ip.flags & IPT_F_GOTO)) {
/* Save old back ptr in next entry */
struct ipt_entry *next
= (void *)e + e->next_offset;

4
net/ipv6/netfilter/ip6_tables.c
View file

@ -433,8 +433,8 @@ ip6t_do_table(struct sk_buff **pskb,
back->comefrom);
continue;
}
if (table_base + v
!= (void *)e + e->next_offset) {
if (table_base + v != (void *)e + e->next_offset
&& !(e->ipv6.flags & IP6T_F_GOTO)) {
/* Save old back ptr in next entry */
struct ip6t_entry *next
= (void *)e + e->next_offset;