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authorJan Engelhardt <jengelh@medozas.de>2010-02-24 18:34:48 +0100
committerPatrick McHardy <kaber@trash.net>2010-02-24 18:34:48 +0100
commitdcea992aca82cb08b4674c4c783e325835408d1e (patch)
treeb3490bbbf49931f1405a7ebeb2f2f9d2b136cd9a /net/ipv6/netfilter/ip6_tables.c
parent0559518b5b99c591226460c0bbf8e6a570c518a8 (diff)
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netfilter: xtables: replace XT_MATCH_ITERATE macro
The macro is replaced by a list.h-like foreach loop. This makes the code more inspectable. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/ipv6/netfilter/ip6_tables.c')
-rw-r--r--net/ipv6/netfilter/ip6_tables.c78
1 files changed, 61 insertions, 17 deletions
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index b7e27c19c7a..1537e6bad5d 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -393,16 +393,21 @@ ip6t_do_table(struct sk_buff *skb,
do {
const struct ip6t_entry_target *t;
+ const struct xt_entry_match *ematch;
IP_NF_ASSERT(e);
IP_NF_ASSERT(back);
if (!ip6_packet_match(skb, indev, outdev, &e->ipv6,
- &mtpar.thoff, &mtpar.fragoff, &hotdrop) ||
- IP6T_MATCH_ITERATE(e, do_match, skb, &mtpar) != 0) {
+ &mtpar.thoff, &mtpar.fragoff, &hotdrop)) {
+ no_match:
e = ip6t_next_entry(e);
continue;
}
+ xt_ematch_foreach(ematch, e)
+ if (do_match(ematch, skb, &mtpar) != 0)
+ goto no_match;
+
ADD_COUNTER(e->counters,
ntohs(ipv6_hdr(skb)->payload_len) +
sizeof(struct ipv6hdr), 1);
@@ -717,6 +722,7 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
int ret;
unsigned int j;
struct xt_mtchk_param mtpar;
+ struct xt_entry_match *ematch;
ret = check_entry(e, name);
if (ret)
@@ -728,7 +734,11 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
mtpar.entryinfo = &e->ipv6;
mtpar.hook_mask = e->comefrom;
mtpar.family = NFPROTO_IPV6;
- ret = IP6T_MATCH_ITERATE(e, find_check_match, &mtpar, &j);
+ xt_ematch_foreach(ematch, e) {
+ ret = find_check_match(ematch, &mtpar, &j);
+ if (ret != 0)
+ break;
+ }
if (ret != 0)
goto cleanup_matches;
@@ -751,7 +761,9 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
err:
module_put(t->u.kernel.target->me);
cleanup_matches:
- IP6T_MATCH_ITERATE(e, cleanup_match, net, &j);
+ xt_ematch_foreach(ematch, e)
+ if (cleanup_match(ematch, net, &j) != 0)
+ break;
return ret;
}
@@ -821,9 +833,12 @@ static void cleanup_entry(struct ip6t_entry *e, struct net *net)
{
struct xt_tgdtor_param par;
struct ip6t_entry_target *t;
+ struct xt_entry_match *ematch;
/* Cleanup all matches */
- IP6T_MATCH_ITERATE(e, cleanup_match, net, NULL);
+ xt_ematch_foreach(ematch, e)
+ if (cleanup_match(ematch, net, NULL) != 0)
+ break;
t = ip6t_get_target(e);
par.net = net;
@@ -1090,13 +1105,16 @@ static int compat_calc_entry(const struct ip6t_entry *e,
const struct xt_table_info *info,
const void *base, struct xt_table_info *newinfo)
{
+ const struct xt_entry_match *ematch;
const struct ip6t_entry_target *t;
unsigned int entry_offset;
int off, i, ret;
off = sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
entry_offset = (void *)e - base;
- IP6T_MATCH_ITERATE(e, compat_calc_match, &off);
+ xt_ematch_foreach(ematch, e)
+ if (compat_calc_match(ematch, &off) != 0)
+ break;
t = ip6t_get_target_c(e);
off += xt_compat_target_offset(t->u.kernel.target);
newinfo->size -= off;
@@ -1474,7 +1492,8 @@ compat_copy_entry_to_user(struct ip6t_entry *e, void __user **dstptr,
struct compat_ip6t_entry __user *ce;
u_int16_t target_offset, next_offset;
compat_uint_t origsize;
- int ret;
+ const struct xt_entry_match *ematch;
+ int ret = 0;
origsize = *size;
ce = (struct compat_ip6t_entry __user *)*dstptr;
@@ -1486,7 +1505,11 @@ compat_copy_entry_to_user(struct ip6t_entry *e, void __user **dstptr,
*dstptr += sizeof(struct compat_ip6t_entry);
*size -= sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
- ret = IP6T_MATCH_ITERATE(e, xt_compat_match_to_user, dstptr, size);
+ xt_ematch_foreach(ematch, e) {
+ ret = xt_compat_match_to_user(ematch, dstptr, size);
+ if (ret != 0)
+ break;
+ }
target_offset = e->target_offset - (origsize - *size);
if (ret)
return ret;
@@ -1538,9 +1561,12 @@ compat_release_match(struct ip6t_entry_match *m, unsigned int *i)
static void compat_release_entry(struct compat_ip6t_entry *e)
{
struct ip6t_entry_target *t;
+ struct xt_entry_match *ematch;
/* Cleanup all matches */
- COMPAT_IP6T_MATCH_ITERATE(e, compat_release_match, NULL);
+ xt_ematch_foreach(ematch, e)
+ if (compat_release_match(ematch, NULL) != 0)
+ break;
t = compat_ip6t_get_target(e);
module_put(t->u.kernel.target->me);
}
@@ -1555,6 +1581,7 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
const unsigned int *underflows,
const char *name)
{
+ struct xt_entry_match *ematch;
struct ip6t_entry_target *t;
struct xt_target *target;
unsigned int entry_offset;
@@ -1583,8 +1610,12 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
off = sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
entry_offset = (void *)e - (void *)base;
j = 0;
- ret = COMPAT_IP6T_MATCH_ITERATE(e, compat_find_calc_match, name,
- &e->ipv6, e->comefrom, &off, &j);
+ xt_ematch_foreach(ematch, e) {
+ ret = compat_find_calc_match(ematch, name,
+ &e->ipv6, e->comefrom, &off, &j);
+ if (ret != 0)
+ break;
+ }
if (ret != 0)
goto release_matches;
@@ -1623,7 +1654,9 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
out:
module_put(t->u.kernel.target->me);
release_matches:
- IP6T_MATCH_ITERATE(e, compat_release_match, &j);
+ xt_ematch_foreach(ematch, e)
+ if (compat_release_match(ematch, &j) != 0)
+ break;
return ret;
}
@@ -1637,6 +1670,7 @@ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
struct ip6t_entry *de;
unsigned int origsize;
int ret, h;
+ struct xt_entry_match *ematch;
ret = 0;
origsize = *size;
@@ -1647,8 +1681,11 @@ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
*dstptr += sizeof(struct ip6t_entry);
*size += sizeof(struct ip6t_entry) - sizeof(struct compat_ip6t_entry);
- ret = COMPAT_IP6T_MATCH_ITERATE(e, xt_compat_match_from_user,
- dstptr, size);
+ xt_ematch_foreach(ematch, e) {
+ ret = xt_compat_match_from_user(ematch, dstptr, size);
+ if (ret != 0)
+ break;
+ }
if (ret)
return ret;
de->target_offset = e->target_offset - (origsize - *size);
@@ -1670,8 +1707,9 @@ static int compat_check_entry(struct ip6t_entry *e, struct net *net,
const char *name)
{
unsigned int j;
- int ret;
+ int ret = 0;
struct xt_mtchk_param mtpar;
+ struct xt_entry_match *ematch;
j = 0;
mtpar.net = net;
@@ -1679,7 +1717,11 @@ static int compat_check_entry(struct ip6t_entry *e, struct net *net,
mtpar.entryinfo = &e->ipv6;
mtpar.hook_mask = e->comefrom;
mtpar.family = NFPROTO_IPV6;
- ret = IP6T_MATCH_ITERATE(e, check_match, &mtpar, &j);
+ xt_ematch_foreach(ematch, e) {
+ ret = check_match(ematch, &mtpar, &j);
+ if (ret != 0)
+ break;
+ }
if (ret)
goto cleanup_matches;
@@ -1689,7 +1731,9 @@ static int compat_check_entry(struct ip6t_entry *e, struct net *net,
return 0;
cleanup_matches:
- IP6T_MATCH_ITERATE(e, cleanup_match, net, &j);
+ xt_ematch_foreach(ematch, e)
+ if (cleanup_match(ematch, net, &j) != 0)
+ break;
return ret;
}