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build: remove support for Linux 3.6 / switch xt_DNETMAP to nf_nat

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This commit is contained in:
Jan Engelhardt
2012-10-15 19:49:41 +02:00
parent 2a5f1099c8
commit 1ed86c6bbd
9 changed files with 51 additions and 59 deletions
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2
INSTALL
View File

@@ -14,7 +14,7 @@ Supported configurations for this release
* iptables >= 1.4.5
* kernel-devel >= 3.6
* kernel-devel >= 3.7
with prepared build/output directory
- CONFIG_NF_CONNTRACK or CONFIG_IP_NF_CONNTRACK
- CONFIG_NF_CONNTRACK_MARK or CONFIG_IP_NF_CONNTRACK_MARK

4
configure.ac
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@@ -63,9 +63,9 @@ if test -n "$kbuilddir"; then
echo "WARNING: Version detection did not succeed. Continue at own luck.";
else
echo "$kmajor.$kminor.$kmicro.$kstable in $kbuilddir";
if test "$kmajor" -gt 3 -o "$kmajor" -eq 3 -a "$kminor" -gt 6; then
if test "$kmajor" -gt 3 -o "$kmajor" -eq 3 -a "$kminor" -gt 7; then
echo "WARNING: That kernel version is not officially supported.";
elif test "$kmajor" -eq 3 -a "$kminor" -ge 6; then
elif test "$kmajor" -eq 3 -a "$kminor" -ge 7; then
:;
else
echo "WARNING: That kernel version is not officially supported.";

4
doc/changelog.txt
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@@ -2,9 +2,11 @@
HEAD
====
Changes:
- remove support for Linux 2.6.17–3.5
- remove support for Linux 2.6.17–3.6
- remove xt_TEE (this is available upstream since 2.6.35)
- remove xt_CHECKSUM (this is available upstream since 2.6.36)
Enhancements:
- Support for Linux 3.7
v1.47.1 (2010-10-15)

4
extensions/compat_xtables.h
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@@ -8,8 +8,8 @@
#define DEBUGP Use__pr_debug__instead
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 6, 0)
# warning Kernels below 3.6 not supported.
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
# warning Kernels below 3.7 not supported.
#endif
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)

31
extensions/libxt_DNETMAP.c
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@@ -69,19 +69,8 @@ static int netmask2bits(u_int32_t netmask)
return bits;
}
static void DNETMAP_init(struct xt_entry_target *t)
{
struct xt_DNETMAP_tginfo *tginfo = (void *)&t->data;
struct nf_nat_ipv4_multi_range_compat *mr = &tginfo->prefix;
/* Actually, it's 0, but it's ignored at the moment. */
mr->rangesize = 1;
tginfo->ttl = 0;
tginfo->flags = 0;
}
/* Parses network address */
static void parse_prefix(char *arg, struct nf_nat_ipv4_range *range)
static void parse_prefix(char *arg, struct nf_nat_range *range)
{
char *slash;
const struct in_addr *ip;
@@ -97,7 +86,7 @@ static void parse_prefix(char *arg, struct nf_nat_ipv4_range *range)
if (ip == NULL)
xtables_error(PARAMETER_PROBLEM, "Bad IP address \"%s\"\n",
arg);
range->min_ip = ip->s_addr;
range->min_addr.in = *ip;
if (slash) {
if (strchr(slash + 1, '.')) {
ip = xtables_numeric_to_ipmask(slash + 1);
@@ -123,20 +112,20 @@ static void parse_prefix(char *arg, struct nf_nat_ipv4_range *range)
} else
netmask = ~0;
if (range->min_ip & ~netmask) {
if (range->min_addr.ip & ~netmask) {
if (slash)
*slash = '/';
xtables_error(PARAMETER_PROBLEM, "Bad network address \"%s\"\n",
arg);
}
range->max_ip = range->min_ip | ~netmask;
range->max_addr.ip = range->min_addr.ip | ~netmask;
}
static int DNETMAP_parse(int c, char **argv, int invert, unsigned int *flags,
const void *entry, struct xt_entry_target **target)
{
struct xt_DNETMAP_tginfo *tginfo = (void *)(*target)->data;
struct nf_nat_ipv4_multi_range_compat *mr = &tginfo->prefix;
struct nf_nat_range *mr = &tginfo->prefix;
char *end;
switch (c) {
@@ -147,7 +136,7 @@ static int DNETMAP_parse(int c, char **argv, int invert, unsigned int *flags,
invert);
/* TO-DO use xtables_ipparse_any instead? */
parse_prefix(optarg, &mr->range[0]);
parse_prefix(optarg, mr);
*flags |= XT_DNETMAP_PREFIX;
tginfo->flags |= XT_DNETMAP_PREFIX;
return 1;
@@ -192,14 +181,13 @@ static void DNETMAP_print_addr(const void *ip,
int numeric)
{
struct xt_DNETMAP_tginfo *tginfo = (void *)&target->data;
const struct nf_nat_ipv4_multi_range_compat *mr = &tginfo->prefix;
const struct nf_nat_ipv4_range *r = &mr->range[0];
const struct nf_nat_range *r = &tginfo->prefix;
struct in_addr a;
int bits;
a.s_addr = r->min_ip;
a = r->min_addr.in;
printf("%s", xtables_ipaddr_to_numeric(&a));
a.s_addr = ~(r->min_ip ^ r->max_ip);
a.s_addr = ~(r->min_addr.ip ^ r->max_addr.ip);
bits = netmask2bits(a.s_addr);
if (bits < 0)
printf("/%s", xtables_ipaddr_to_numeric(&a));
@@ -265,7 +253,6 @@ static struct xtables_target dnetmap_tg_reg = {
.size = XT_ALIGN(sizeof(struct xt_DNETMAP_tginfo)),
.userspacesize = XT_ALIGN(sizeof(struct xt_DNETMAP_tginfo)),
.help = DNETMAP_help,
.init = DNETMAP_init,
.parse = DNETMAP_parse,
.print = DNETMAP_print,
.save = DNETMAP_save,

53
extensions/xt_DNETMAP.c
View File

@@ -78,7 +78,7 @@ struct dnetmap_entry {
};
struct dnetmap_prefix {
struct nf_nat_ipv4_multi_range_compat prefix;
struct nf_nat_range prefix;
char prefix_str[16];
#ifdef CONFIG_PROC_FS
char proc_str_data[20];
@@ -168,7 +168,7 @@ dnetmap_addr_in_prefix(struct dnetmap_net *dnetmap_net, const __be32 addr,
static struct dnetmap_prefix *
dnetmap_prefix_lookup(struct dnetmap_net *dnetmap_net,
const struct nf_nat_ipv4_multi_range_compat *mr)
const struct nf_nat_range *mr)
{
struct dnetmap_prefix *p;
@@ -247,7 +247,7 @@ static int dnetmap_tg_check(const struct xt_tgchk_param *par)
{
struct dnetmap_net *dnetmap_net = dnetmap_pernet(par->net);
const struct xt_DNETMAP_tginfo *tginfo = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = &tginfo->prefix;
const struct nf_nat_range *mr = &tginfo->prefix;
struct dnetmap_prefix *p;
struct dnetmap_entry *e;
#ifdef CONFIG_PROC_FS
@@ -263,14 +263,10 @@ static int dnetmap_tg_check(const struct xt_tgchk_param *par)
return ret;
}
if (!(mr->range[0].flags & NF_NAT_RANGE_MAP_IPS)) {
if (!(mr->flags & NF_NAT_RANGE_MAP_IPS)) {
pr_debug("DNETMAP:check: bad MAP_IPS.\n");
return -EINVAL;
}
if (mr->rangesize != 1) {
pr_debug("DNETMAP:check: bad rangesize %u.\n", mr->rangesize);
return -EINVAL;
}
mutex_lock(&dnetmap_mutex);
p = dnetmap_prefix_lookup(dnetmap_net, mr);
@@ -296,15 +292,15 @@ static int dnetmap_tg_check(const struct xt_tgchk_param *par)
INIT_LIST_HEAD(&p->lru_list);
INIT_LIST_HEAD(&p->elist);
ip_min = ntohl(mr->range[0].min_ip) + (whole_prefix == 0);
ip_max = ntohl(mr->range[0].max_ip) - (whole_prefix == 0);
ip_min = ntohl(mr->min_addr.ip) + (whole_prefix == 0);
ip_max = ntohl(mr->max_addr.ip) - (whole_prefix == 0);
sprintf(p->prefix_str, NIPQUAD_FMT "/%u", NIPQUAD(mr->range[0].min_ip),
sprintf(p->prefix_str, NIPQUAD_FMT "/%u", NIPQUAD(mr->min_addr.ip),
33 - ffs(~(ip_min ^ ip_max)));
#ifdef CONFIG_PROC_FS
sprintf(p->proc_str_data, NIPQUAD_FMT "_%u", NIPQUAD(mr->range[0].min_ip),
sprintf(p->proc_str_data, NIPQUAD_FMT "_%u", NIPQUAD(mr->min_addr.ip),
33 - ffs(~(ip_min ^ ip_max)));
sprintf(p->proc_str_stat, NIPQUAD_FMT "_%u_stat", NIPQUAD(mr->range[0].min_ip),
sprintf(p->proc_str_stat, NIPQUAD_FMT "_%u_stat", NIPQUAD(mr->min_addr.ip),
33 - ffs(~(ip_min ^ ip_max)));
#endif
printk(KERN_INFO KBUILD_MODNAME ": new prefix %s\n", p->prefix_str);
@@ -370,8 +366,8 @@ dnetmap_tg(struct sk_buff **pskb, const struct xt_action_param *par)
enum ip_conntrack_info ctinfo;
__be32 prenat_ip, postnat_ip, prenat_ip_prev;
const struct xt_DNETMAP_tginfo *tginfo = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = &tginfo->prefix;
struct nf_nat_ipv4_range newrange;
const struct nf_nat_range *mr = &tginfo->prefix;
struct nf_nat_range newrange;
struct dnetmap_entry *e;
struct dnetmap_prefix *p;
__s32 jttl;
@@ -408,15 +404,14 @@ dnetmap_tg(struct sk_buff **pskb, const struct xt_action_param *par)
spin_unlock_bh(&dnetmap_lock);
newrange = ((struct nf_nat_ipv4_range) {
mr->range[0].flags | NF_NAT_RANGE_MAP_IPS,
e->prenat_addr, e->prenat_addr,
mr->range[0].min, mr->range[0].max});
/* Hand modified range to generic setup. */
memset(&newrange, 0, sizeof(newrange));
newrange.flags = mr->flags | NF_NAT_RANGE_MAP_IPS;
newrange.min_addr.ip = e->prenat_addr;
newrange.max_addr.ip = e->prenat_addr;
newrange.min_proto = mr->min_proto;
newrange.max_proto = mr->max_proto;
return nf_nat_setup_info(ct, &newrange,
HOOK2MANIP(par->hooknum));
}
prenat_ip = ip_hdr(skb)->saddr;
@@ -498,12 +493,12 @@ bind_new_prefix:
spin_unlock_bh(&dnetmap_lock);
newrange = ((struct nf_nat_ipv4_range) {
mr->range[0].flags | NF_NAT_RANGE_MAP_IPS,
postnat_ip, postnat_ip,
mr->range[0].min, mr->range[0].max});
/* Hand modified range to generic setup. */
memset(&newrange, 0, sizeof(newrange));
newrange.flags = mr->flags | NF_NAT_RANGE_MAP_IPS;
newrange.min_addr.ip = postnat_ip;
newrange.max_addr.ip = postnat_ip;
newrange.min_proto = mr->min_proto;
newrange.max_proto = mr->max_proto;
return nf_nat_setup_info(ct, &newrange, HOOK2MANIP(par->hooknum));
no_rev_map:
@@ -517,7 +512,7 @@ static void dnetmap_tg_destroy(const struct xt_tgdtor_param *par)
{
struct dnetmap_net *dnetmap_net = dnetmap_pernet(par->net);
const struct xt_DNETMAP_tginfo *tginfo = par->targinfo;
const struct nf_nat_ipv4_multi_range_compat *mr = &tginfo->prefix;
const struct nf_nat_range *mr = &tginfo->prefix;
struct dnetmap_prefix *p;
if (!(tginfo->flags & XT_DNETMAP_PREFIX))

2
extensions/xt_DNETMAP.h
View File

@@ -13,7 +13,7 @@ enum {
};
struct xt_DNETMAP_tginfo {
struct nf_nat_ipv4_multi_range_compat prefix;
struct nf_nat_range prefix;
__u8 flags;
__s32 ttl;
};

8
include/linux/netfilter/nf_nat.h
View File

@@ -22,4 +22,12 @@ struct nf_nat_ipv4_multi_range_compat {
struct nf_nat_ipv4_range range[1];
};
struct nf_nat_range {
unsigned int flags;
union nf_inet_addr min_addr;
union nf_inet_addr max_addr;
union nf_conntrack_man_proto min_proto;
union nf_conntrack_man_proto max_proto;
};
#endif /* _NETFILTER_NF_NAT_H */

2
mconfig
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@@ -4,7 +4,7 @@ build_ACCOUNT=m
build_CHAOS=m
build_DELUDE=m
build_DHCPMAC=m
build_DNETMAP=m
build_DNETMAP=
build_ECHO=m
build_IPMARK=m
build_LOGMARK=m