diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/netfilter/Kconfig | 9 | ||||
| -rw-r--r-- | net/ipv4/netfilter/Makefile | 1 | ||||
| -rw-r--r-- | net/ipv4/netfilter/ipt_SAME.c | 174 |
3 files changed, 0 insertions, 184 deletions
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig index b11231d..ad26f66 100644 --- a/net/ipv4/netfilter/Kconfig +++ b/net/ipv4/netfilter/Kconfig @@ -211,15 +211,6 @@ config IP_NF_TARGET_NETMAP To compile it as a module, choose M here. If unsure, say N. -config IP_NF_TARGET_SAME - tristate "SAME target support (OBSOLETE)" - depends on NF_NAT - help - This option adds a `SAME' target, which works like the standard SNAT - target, but attempts to give clients the same IP for all connections. - - To compile it as a module, choose M here. If unsure, say N. - config NF_NAT_SNMP_BASIC tristate "Basic SNMP-ALG support (EXPERIMENTAL)" depends on EXPERIMENTAL && NF_NAT diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile index 2fc0561..fd7d4a5 100644 --- a/net/ipv4/netfilter/Makefile +++ b/net/ipv4/netfilter/Makefile @@ -56,7 +56,6 @@ obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o -obj-$(CONFIG_IP_NF_TARGET_SAME) += ipt_SAME.o obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o diff --git a/net/ipv4/netfilter/ipt_SAME.c b/net/ipv4/netfilter/ipt_SAME.c deleted file mode 100644 index a43923d..0000000 --- a/net/ipv4/netfilter/ipt_SAME.c +++ /dev/null @@ -1,174 +0,0 @@ -/* Same. Just like SNAT, only try to make the connections - * between client A and server B always have the same source ip. - * - * (C) 2000 Paul `Rusty' Russell - * (C) 2001 Martin Josefsson - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/types.h> -#include <linux/ip.h> -#include <linux/timer.h> -#include <linux/module.h> -#include <linux/netfilter.h> -#include <linux/netdevice.h> -#include <linux/if.h> -#include <linux/inetdevice.h> -#include <net/protocol.h> -#include <net/checksum.h> -#include <linux/netfilter_ipv4.h> -#include <linux/netfilter/x_tables.h> -#include <net/netfilter/nf_nat_rule.h> -#include <linux/netfilter_ipv4/ipt_SAME.h> - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Martin Josefsson <gandalf@wlug.westbo.se>"); -MODULE_DESCRIPTION("iptables special SNAT module for consistent sourceip"); - -static bool -same_tg_check(const char *tablename, const void *e, - const struct xt_target *target, void *targinfo, - unsigned int hook_mask) -{ - unsigned int count, countess, rangeip, index = 0; - struct ipt_same_info *mr = targinfo; - - mr->ipnum = 0; - - if (mr->rangesize < 1) { - pr_debug("same_check: need at least one dest range.\n"); - return false; - } - if (mr->rangesize > IPT_SAME_MAX_RANGE) { - pr_debug("same_check: too many ranges specified, maximum " - "is %u ranges\n", IPT_SAME_MAX_RANGE); - return false; - } - for (count = 0; count < mr->rangesize; count++) { - if (ntohl(mr->range[count].min_ip) > - ntohl(mr->range[count].max_ip)) { - pr_debug("same_check: min_ip is larger than max_ip in " - "range `%u.%u.%u.%u-%u.%u.%u.%u'.\n", - NIPQUAD(mr->range[count].min_ip), - NIPQUAD(mr->range[count].max_ip)); - return false; - } - if (!(mr->range[count].flags & IP_NAT_RANGE_MAP_IPS)) { - pr_debug("same_check: bad MAP_IPS.\n"); - return false; - } - rangeip = (ntohl(mr->range[count].max_ip) - - ntohl(mr->range[count].min_ip) + 1); - mr->ipnum += rangeip; - - pr_debug("same_check: range %u, ipnum = %u\n", count, rangeip); - } - pr_debug("same_check: total ipaddresses = %u\n", mr->ipnum); - - mr->iparray = kmalloc((sizeof(u_int32_t) * mr->ipnum), GFP_KERNEL); - if (!mr->iparray) { - pr_debug("same_check: Couldn't allocate %Zu bytes " - "for %u ipaddresses!\n", - (sizeof(u_int32_t) * mr->ipnum), mr->ipnum); - return false; - } - pr_debug("same_check: Allocated %Zu bytes for %u ipaddresses.\n", - (sizeof(u_int32_t) * mr->ipnum), mr->ipnum); - - for (count = 0; count < mr->rangesize; count++) { - for (countess = ntohl(mr->range[count].min_ip); - countess <= ntohl(mr->range[count].max_ip); - countess++) { - mr->iparray[index] = countess; - pr_debug("same_check: Added ipaddress `%u.%u.%u.%u' " - "in index %u.\n", HIPQUAD(countess), index); - index++; - } - } - return true; -} - -static void same_tg_destroy(const struct xt_target *target, void *targinfo) -{ - struct ipt_same_info *mr = targinfo; - - kfree(mr->iparray); - - pr_debug("same_destroy: Deallocated %Zu bytes for %u ipaddresses.\n", - (sizeof(u_int32_t) * mr->ipnum), mr->ipnum); -} - -static unsigned int -same_tg(struct sk_buff *skb, const struct net_device *in, - const struct net_device *out, unsigned int hooknum, - const struct xt_target *target, const void *targinfo) -{ - struct nf_conn *ct; - enum ip_conntrack_info ctinfo; - u_int32_t tmpip, aindex; - __be32 new_ip; - const struct ipt_same_info *same = targinfo; - struct nf_nat_range newrange; - const struct nf_conntrack_tuple *t; - - NF_CT_ASSERT(hooknum == NF_INET_PRE_ROUTING || - hooknum == NF_INET_POST_ROUTING); - ct = nf_ct_get(skb, &ctinfo); - - t = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple; - - /* Base new source on real src ip and optionally dst ip, - giving some hope for consistency across reboots. - Here we calculate the index in same->iparray which - holds the ipaddress we should use */ - - tmpip = ntohl(t->src.u3.ip); - - if (!(same->info & IPT_SAME_NODST)) - tmpip += ntohl(t->dst.u3.ip); - aindex = tmpip % same->ipnum; - - new_ip = htonl(same->iparray[aindex]); - - pr_debug("ipt_SAME: src=%u.%u.%u.%u dst=%u.%u.%u.%u, " - "new src=%u.%u.%u.%u\n", - NIPQUAD(t->src.u3.ip), NIPQUAD(t->dst.u3.ip), NIPQUAD(new_ip)); - - /* Transfer from original range. */ - newrange = ((struct nf_nat_range) - { same->range[0].flags, new_ip, new_ip, - /* FIXME: Use ports from correct range! */ - same->range[0].min, same->range[0].max }); - - /* Hand modified range to generic setup. */ - return nf_nat_setup_info(ct, &newrange, hooknum); -} - -static struct xt_target same_tg_reg __read_mostly = { - .name = "SAME", - .family = AF_INET, - .target = same_tg, - .targetsize = sizeof(struct ipt_same_info), - .table = "nat", - .hooks = (1 << NF_INET_PRE_ROUTING) | - (1 << NF_INET_POST_ROUTING), - .checkentry = same_tg_check, - .destroy = same_tg_destroy, - .me = THIS_MODULE, -}; - -static int __init same_tg_init(void) -{ - return xt_register_target(&same_tg_reg); -} - -static void __exit same_tg_exit(void) -{ - xt_unregister_target(&same_tg_reg); -} - -module_init(same_tg_init); -module_exit(same_tg_exit); - |