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Merge branch 'master' of git://dev.medozas.de/linux

Browse source
This commit is contained in:
Patrick McHardy 2010-05-11 18:59:21 +02:00
commit cba7a98a47
98 changed files with 316 additions and 367 deletions
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65
net/ipv4/netfilter/arp_tables.c
View file

@ -224,7 +224,7 @@ static inline int arp_checkentry(const struct arpt_arp *arp)
}
static unsigned int
arpt_error(struct sk_buff *skb, const struct xt_target_param *par)
arpt_error(struct sk_buff *skb, const struct xt_action_param *par)
{
if (net_ratelimit())
printk("arp_tables: error: '%s'\n",
@ -260,12 +260,11 @@ unsigned int arpt_do_table(struct sk_buff *skb,
static const char nulldevname[IFNAMSIZ] __attribute__((aligned(sizeof(long))));
unsigned int verdict = NF_DROP;
const struct arphdr *arp;
bool hotdrop = false;
struct arpt_entry *e, *back;
const char *indev, *outdev;
void *table_base;
const struct xt_table_info *private;
struct xt_target_param tgpar;
struct xt_action_param acpar;
if (!pskb_may_pull(skb, arp_hdr_len(skb->dev)))
return NF_DROP;
@ -280,10 +279,11 @@ unsigned int arpt_do_table(struct sk_buff *skb,
e = get_entry(table_base, private->hook_entry[hook]);
back = get_entry(table_base, private->underflow[hook]);
tgpar.in = in;
tgpar.out = out;
tgpar.hooknum = hook;
tgpar.family = NFPROTO_ARP;
acpar.in = in;
acpar.out = out;
acpar.hooknum = hook;
acpar.family = NFPROTO_ARP;
acpar.hotdrop = false;
arp = arp_hdr(skb);
do {
@ -333,9 +333,9 @@ unsigned int arpt_do_table(struct sk_buff *skb,
/* Targets which reenter must return
* abs. verdicts
*/
tgpar.target = t->u.kernel.target;
tgpar.targinfo = t->data;
verdict = t->u.kernel.target->target(skb, &tgpar);
acpar.target = t->u.kernel.target;
acpar.targinfo = t->data;
verdict = t->u.kernel.target->target(skb, &acpar);
/* Target might have changed stuff. */
arp = arp_hdr(skb);
@ -345,10 +345,10 @@ unsigned int arpt_do_table(struct sk_buff *skb,
else
/* Verdict */
break;
} while (!hotdrop);
} while (!acpar.hotdrop);
xt_info_rdunlock_bh();
if (hotdrop)
if (acpar.hotdrop)
return NF_DROP;
else
return verdict;
@ -1828,22 +1828,23 @@ void arpt_unregister_table(struct xt_table *table)
}
/* The built-in targets: standard (NULL) and error. */
static struct xt_target arpt_standard_target __read_mostly = {
.name = ARPT_STANDARD_TARGET,
.targetsize = sizeof(int),
.family = NFPROTO_ARP,
static struct xt_target arpt_builtin_tg[] __read_mostly = {
{
.name = ARPT_STANDARD_TARGET,
.targetsize = sizeof(int),
.family = NFPROTO_ARP,
#ifdef CONFIG_COMPAT
.compatsize = sizeof(compat_int_t),
.compat_from_user = compat_standard_from_user,
.compat_to_user = compat_standard_to_user,
.compatsize = sizeof(compat_int_t),
.compat_from_user = compat_standard_from_user,
.compat_to_user = compat_standard_to_user,
#endif
};
static struct xt_target arpt_error_target __read_mostly = {
.name = ARPT_ERROR_TARGET,
.target = arpt_error,
.targetsize = ARPT_FUNCTION_MAXNAMELEN,
.family = NFPROTO_ARP,
},
{
.name = ARPT_ERROR_TARGET,
.target = arpt_error,
.targetsize = ARPT_FUNCTION_MAXNAMELEN,
.family = NFPROTO_ARP,
},
};
static struct nf_sockopt_ops arpt_sockopts = {
@ -1887,12 +1888,9 @@ static int __init arp_tables_init(void)
goto err1;
/* Noone else will be downing sem now, so we won't sleep */
ret = xt_register_target(&arpt_standard_target);
ret = xt_register_targets(arpt_builtin_tg, ARRAY_SIZE(arpt_builtin_tg));
if (ret < 0)
goto err2;
ret = xt_register_target(&arpt_error_target);
if (ret < 0)
goto err3;
/* Register setsockopt */
ret = nf_register_sockopt(&arpt_sockopts);
@ -1903,9 +1901,7 @@ static int __init arp_tables_init(void)
return 0;
err4:
xt_unregister_target(&arpt_error_target);
err3:
xt_unregister_target(&arpt_standard_target);
xt_unregister_targets(arpt_builtin_tg, ARRAY_SIZE(arpt_builtin_tg));
err2:
unregister_pernet_subsys(&arp_tables_net_ops);
err1:
@ -1915,8 +1911,7 @@ err1:
static void __exit arp_tables_fini(void)
{
nf_unregister_sockopt(&arpt_sockopts);
xt_unregister_target(&arpt_error_target);
xt_unregister_target(&arpt_standard_target);
xt_unregister_targets(arpt_builtin_tg, ARRAY_SIZE(arpt_builtin_tg));
unregister_pernet_subsys(&arp_tables_net_ops);
}

2
net/ipv4/netfilter/arpt_mangle.c
View file

@ -9,7 +9,7 @@ MODULE_AUTHOR("Bart De Schuymer <[email protected]>");
MODULE_DESCRIPTION("arptables arp payload mangle target");
static unsigned int
target(struct sk_buff *skb, const struct xt_target_param *par)
target(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct arpt_mangle *mangle = par->targinfo;
const struct arphdr *arp;

128
net/ipv4/netfilter/ip_tables.c
View file

@ -165,7 +165,7 @@ ip_checkentry(const struct ipt_ip *ip)
}
static unsigned int
ipt_error(struct sk_buff *skb, const struct xt_target_param *par)
ipt_error(struct sk_buff *skb, const struct xt_action_param *par)
{
if (net_ratelimit())
pr_info("error: `%s'\n", (const char *)par->targinfo);
@ -173,21 +173,6 @@ ipt_error(struct sk_buff *skb, const struct xt_target_param *par)
return NF_DROP;
}
/* Performance critical - called for every packet */
static inline bool
do_match(const struct ipt_entry_match *m, const struct sk_buff *skb,
struct xt_match_param *par)
{
par->match = m->u.kernel.match;
par->matchinfo = m->data;
/* Stop iteration if it doesn't match */
if (!m->u.kernel.match->match(skb, par))
return true;
else
return false;
}
/* Performance critical */
static inline struct ipt_entry *
get_entry(const void *base, unsigned int offset)
@ -323,7 +308,6 @@ ipt_do_table(struct sk_buff *skb,
{
static const char nulldevname[IFNAMSIZ] __attribute__((aligned(sizeof(long))));
const struct iphdr *ip;
bool hotdrop = false;
/* Initializing verdict to NF_DROP keeps gcc happy. */
unsigned int verdict = NF_DROP;
const char *indev, *outdev;
@ -331,8 +315,7 @@ ipt_do_table(struct sk_buff *skb,
struct ipt_entry *e, **jumpstack;
unsigned int *stackptr, origptr, cpu;
const struct xt_table_info *private;
struct xt_match_param mtpar;
struct xt_target_param tgpar;
struct xt_action_param acpar;
/* Initialization */
ip = ip_hdr(skb);
@ -344,13 +327,13 @@ ipt_do_table(struct sk_buff *skb,
* things we don't know, ie. tcp syn flag or ports). If the
* rule is also a fragment-specific rule, non-fragments won't
* match it. */
mtpar.fragoff = ntohs(ip->frag_off) & IP_OFFSET;
mtpar.thoff = ip_hdrlen(skb);
mtpar.hotdrop = &hotdrop;
mtpar.in = tgpar.in = in;
mtpar.out = tgpar.out = out;
mtpar.family = tgpar.family = NFPROTO_IPV4;
mtpar.hooknum = tgpar.hooknum = hook;
acpar.fragoff = ntohs(ip->frag_off) & IP_OFFSET;
acpar.thoff = ip_hdrlen(skb);
acpar.hotdrop = false;
acpar.in = in;
acpar.out = out;
acpar.family = NFPROTO_IPV4;
acpar.hooknum = hook;
IP_NF_ASSERT(table->valid_hooks & (1 << hook));
xt_info_rdlock_bh();
@ -373,15 +356,18 @@ ipt_do_table(struct sk_buff *skb,
IP_NF_ASSERT(e);
if (!ip_packet_match(ip, indev, outdev,
&e->ip, mtpar.fragoff)) {
&e->ip, acpar.fragoff)) {
no_match:
e = ipt_next_entry(e);
continue;
}
xt_ematch_foreach(ematch, e)
if (do_match(ematch, skb, &mtpar) != 0)
xt_ematch_foreach(ematch, e) {
acpar.match = ematch->u.kernel.match;
acpar.matchinfo = ematch->data;
if (!acpar.match->match(skb, &acpar))
goto no_match;
}
ADD_COUNTER(e->counters, ntohs(ip->tot_len), 1);
@ -434,11 +420,10 @@ ipt_do_table(struct sk_buff *skb,
continue;
}
tgpar.target = t->u.kernel.target;
tgpar.targinfo = t->data;
acpar.target = t->u.kernel.target;
acpar.targinfo = t->data;
verdict = t->u.kernel.target->target(skb, &tgpar);
verdict = t->u.kernel.target->target(skb, &acpar);
/* Target might have changed stuff. */
ip = ip_hdr(skb);
if (verdict == IPT_CONTINUE)
@ -446,7 +431,7 @@ ipt_do_table(struct sk_buff *skb,
else
/* Verdict */
break;
} while (!hotdrop);
} while (!acpar.hotdrop);
xt_info_rdunlock_bh();
pr_debug("Exiting %s; resetting sp from %u to %u\n",
__func__, *stackptr, origptr);
@ -454,7 +439,7 @@ ipt_do_table(struct sk_buff *skb,
#ifdef DEBUG_ALLOW_ALL
return NF_ACCEPT;
#else
if (hotdrop)
if (acpar.hotdrop)
return NF_DROP;
else return verdict;
#endif
@ -591,7 +576,7 @@ check_entry(const struct ipt_entry *e, const char *name)
const struct ipt_entry_target *t;
if (!ip_checkentry(&e->ip)) {
duprintf("ip check failed %p %s.\n", e, name);
duprintf("ip check failed %p %s.\n", e, par->match->name);
return -EINVAL;
}
@ -618,7 +603,7 @@ check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par)
ret = xt_check_match(par, m->u.match_size - sizeof(*m),
ip->proto, ip->invflags & IPT_INV_PROTO);
if (ret < 0) {
duprintf("check failed for `%s'.\n", par.match->name);
duprintf("check failed for `%s'.\n", par->match->name);
return ret;
}
return 0;
@ -2152,7 +2137,7 @@ icmp_type_code_match(u_int8_t test_type, u_int8_t min_code, u_int8_t max_code,
}
static bool
icmp_match(const struct sk_buff *skb, const struct xt_match_param *par)
icmp_match(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct icmphdr *ic;
struct icmphdr _icmph;
@ -2168,7 +2153,7 @@ icmp_match(const struct sk_buff *skb, const struct xt_match_param *par)
* can't. Hence, no choice but to drop.
*/
duprintf("Dropping evil ICMP tinygram.\n");
*par->hotdrop = true;
par->hotdrop = true;
return false;
}
@ -2187,23 +2172,23 @@ static int icmp_checkentry(const struct xt_mtchk_param *par)
return (icmpinfo->invflags & ~IPT_ICMP_INV) ? -EINVAL : 0;
}
/* The built-in targets: standard (NULL) and error. */
static struct xt_target ipt_standard_target __read_mostly = {
.name = IPT_STANDARD_TARGET,
.targetsize = sizeof(int),
.family = NFPROTO_IPV4,
static struct xt_target ipt_builtin_tg[] __read_mostly = {
{
.name = IPT_STANDARD_TARGET,
.targetsize = sizeof(int),
.family = NFPROTO_IPV4,
#ifdef CONFIG_COMPAT
.compatsize = sizeof(compat_int_t),
.compat_from_user = compat_standard_from_user,
.compat_to_user = compat_standard_to_user,
.compatsize = sizeof(compat_int_t),
.compat_from_user = compat_standard_from_user,
.compat_to_user = compat_standard_to_user,
#endif
};
static struct xt_target ipt_error_target __read_mostly = {
.name = IPT_ERROR_TARGET,
.target = ipt_error,
.targetsize = IPT_FUNCTION_MAXNAMELEN,
.family = NFPROTO_IPV4,
},
{
.name = IPT_ERROR_TARGET,
.target = ipt_error,
.targetsize = IPT_FUNCTION_MAXNAMELEN,
.family = NFPROTO_IPV4,
},
};
static struct nf_sockopt_ops ipt_sockopts = {
@ -2223,13 +2208,15 @@ static struct nf_sockopt_ops ipt_sockopts = {
.owner = THIS_MODULE,
};
static struct xt_match icmp_matchstruct __read_mostly = {
.name = "icmp",
.match = icmp_match,
.matchsize = sizeof(struct ipt_icmp),
.checkentry = icmp_checkentry,
.proto = IPPROTO_ICMP,
.family = NFPROTO_IPV4,
static struct xt_match ipt_builtin_mt[] __read_mostly = {
{
.name = "icmp",
.match = icmp_match,
.matchsize = sizeof(struct ipt_icmp),
.checkentry = icmp_checkentry,
.proto = IPPROTO_ICMP,
.family = NFPROTO_IPV4,
},
};
static int __net_init ip_tables_net_init(struct net *net)
@ -2256,13 +2243,10 @@ static int __init ip_tables_init(void)
goto err1;
/* Noone else will be downing sem now, so we won't sleep */
ret = xt_register_target(&ipt_standard_target);
ret = xt_register_targets(ipt_builtin_tg, ARRAY_SIZE(ipt_builtin_tg));
if (ret < 0)
goto err2;
ret = xt_register_target(&ipt_error_target);
if (ret < 0)
goto err3;
ret = xt_register_match(&icmp_matchstruct);
ret = xt_register_matches(ipt_builtin_mt, ARRAY_SIZE(ipt_builtin_mt));
if (ret < 0)
goto err4;
@ -2275,11 +2259,9 @@ static int __init ip_tables_init(void)
return 0;
err5:
xt_unregister_match(&icmp_matchstruct);
xt_unregister_matches(ipt_builtin_mt, ARRAY_SIZE(ipt_builtin_mt));
err4:
xt_unregister_target(&ipt_error_target);
err3:
xt_unregister_target(&ipt_standard_target);
xt_unregister_targets(ipt_builtin_tg, ARRAY_SIZE(ipt_builtin_tg));
err2:
unregister_pernet_subsys(&ip_tables_net_ops);
err1:
@ -2290,10 +2272,8 @@ static void __exit ip_tables_fini(void)
{
nf_unregister_sockopt(&ipt_sockopts);
xt_unregister_match(&icmp_matchstruct);
xt_unregister_target(&ipt_error_target);
xt_unregister_target(&ipt_standard_target);
xt_unregister_matches(ipt_builtin_mt, ARRAY_SIZE(ipt_builtin_mt));
xt_unregister_targets(ipt_builtin_tg, ARRAY_SIZE(ipt_builtin_tg));
unregister_pernet_subsys(&ip_tables_net_ops);
}

2
net/ipv4/netfilter/ipt_CLUSTERIP.c
View file

@ -282,7 +282,7 @@ clusterip_responsible(const struct clusterip_config *config, u_int32_t hash)
***********************************************************************/
static unsigned int
clusterip_tg(struct sk_buff *skb, const struct xt_target_param *par)
clusterip_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct ipt_clusterip_tgt_info *cipinfo = par->targinfo;
struct nf_conn *ct;

2
net/ipv4/netfilter/ipt_ECN.c
View file

@ -77,7 +77,7 @@ set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
}
static unsigned int
ecn_tg(struct sk_buff *skb, const struct xt_target_param *par)
ecn_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct ipt_ECN_info *einfo = par->targinfo;

2
net/ipv4/netfilter/ipt_LOG.c
View file

@ -425,7 +425,7 @@ ipt_log_packet(u_int8_t pf,
}
static unsigned int
log_tg(struct sk_buff *skb, const struct xt_target_param *par)
log_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct ipt_log_info *loginfo = par->targinfo;
struct nf_loginfo li;

2
net/ipv4/netfilter/ipt_MASQUERADE.c
View file

@ -44,7 +44,7 @@ static int masquerade_tg_check(const struct xt_tgchk_param *par)
}
static unsigned int
masquerade_tg(struct sk_buff *skb, const struct xt_target_param *par)
masquerade_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
struct nf_conn *ct;
struct nf_conn_nat *nat;

2
net/ipv4/netfilter/ipt_NETMAP.c
View file

@ -38,7 +38,7 @@ static int netmap_tg_check(const struct xt_tgchk_param *par)
}
static unsigned int
netmap_tg(struct sk_buff *skb, const struct xt_target_param *par)
netmap_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;

2
net/ipv4/netfilter/ipt_REDIRECT.c
View file

@ -42,7 +42,7 @@ static int redirect_tg_check(const struct xt_tgchk_param *par)
}
static unsigned int
redirect_tg(struct sk_buff *skb, const struct xt_target_param *par)
redirect_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;

2
net/ipv4/netfilter/ipt_REJECT.c
View file

@ -136,7 +136,7 @@ static inline void send_unreach(struct sk_buff *skb_in, int code)
}
static unsigned int
reject_tg(struct sk_buff *skb, const struct xt_target_param *par)
reject_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct ipt_reject_info *reject = par->targinfo;

2
net/ipv4/netfilter/ipt_ULOG.c
View file

@ -276,7 +276,7 @@ alloc_failure:
}
static unsigned int
ulog_tg(struct sk_buff *skb, const struct xt_target_param *par)
ulog_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
ipt_ulog_packet(par->hooknum, skb, par->in, par->out,
par->targinfo, NULL);

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

@ -30,7 +30,7 @@ static inline bool match_type(struct net *net, const struct net_device *dev,
}
static bool
addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
addrtype_mt_v0(const struct sk_buff *skb, struct xt_action_param *par)
{
struct net *net = dev_net(par->in ? par->in : par->out);
const struct ipt_addrtype_info *info = par->matchinfo;
@ -48,7 +48,7 @@ addrtype_mt_v0(const struct sk_buff *skb, const struct xt_match_param *par)
}
static bool
addrtype_mt_v1(const struct sk_buff *skb, const struct xt_match_param *par)
addrtype_mt_v1(const struct sk_buff *skb, struct xt_action_param *par)
{
struct net *net = dev_net(par->in ? par->in : par->out);
const struct ipt_addrtype_info_v1 *info = par->matchinfo;

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

@ -30,7 +30,7 @@ spi_match(u_int32_t min, u_int32_t max, u_int32_t spi, bool invert)
return r;
}
static bool ah_mt(const struct sk_buff *skb, const struct xt_match_param *par)
static bool ah_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
struct ip_auth_hdr _ahdr;
const struct ip_auth_hdr *ah;
@ -46,7 +46,7 @@ static bool ah_mt(const struct sk_buff *skb, const struct xt_match_param *par)
* can't. Hence, no choice but to drop.
*/
pr_debug("Dropping evil AH tinygram.\n");
*par->hotdrop = true;
par->hotdrop = true;
return 0;
}

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

@ -67,7 +67,7 @@ static inline bool match_tcp(const struct sk_buff *skb,
return true;
}
static bool ecn_mt(const struct sk_buff *skb, const struct xt_match_param *par)
static bool ecn_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct ipt_ecn_info *info = par->matchinfo;
@ -78,7 +78,7 @@ static bool ecn_mt(const struct sk_buff *skb, const struct xt_match_param *par)
if (info->operation & (IPT_ECN_OP_MATCH_ECE|IPT_ECN_OP_MATCH_CWR)) {
if (ip_hdr(skb)->protocol != IPPROTO_TCP)
return false;
if (!match_tcp(skb, info, par->hotdrop))
if (!match_tcp(skb, info, &par->hotdrop))
return false;
}

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

@ -39,7 +39,7 @@ static const struct xt_table nat_table = {
/* Source NAT */
static unsigned int
ipt_snat_target(struct sk_buff *skb, const struct xt_target_param *par)
ipt_snat_target(struct sk_buff *skb, const struct xt_action_param *par)
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
@ -58,7 +58,7 @@ ipt_snat_target(struct sk_buff *skb, const struct xt_target_param *par)
}
static unsigned int
ipt_dnat_target(struct sk_buff *skb, const struct xt_target_param *par)
ipt_dnat_target(struct sk_buff *skb, const struct xt_action_param *par)
{
struct nf_conn *ct;
enum ip_conntrack_info ctinfo;