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Date: Wed, 24 Feb 2010 18:49:38 +0100 (MET)
From: Patrick McHardy <kaber@...sh.net>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, Patrick McHardy <kaber@...sh.net>,
netfilter-devel@...r.kernel.org
Subject: netfilter 08/08: xtables: reduce arguments to translate_table
commit 0f234214d15fa914436d304ecf5c3e43449e79f9
Author: Jan Engelhardt <jengelh@...ozas.de>
Date: Wed Feb 24 18:36:04 2010 +0100
netfilter: xtables: reduce arguments to translate_table
Just pass in the entire repl struct. In case of a new table (e.g.
ip6t_register_table), the repldata has been previously filled with
table->name and table->size already (in ip6t_alloc_initial_table).
Signed-off-by: Jan Engelhardt <jengelh@...ozas.de>
Signed-off-by: Patrick McHardy <kaber@...sh.net>
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 5fdedeb..57098dc 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -622,21 +622,15 @@ static inline void cleanup_entry(struct arpt_entry *e)
/* Checks and translates the user-supplied table segment (held in
* newinfo).
*/
-static int translate_table(const char *name,
- unsigned int valid_hooks,
- struct xt_table_info *newinfo,
- void *entry0,
- unsigned int size,
- unsigned int number,
- const unsigned int *hook_entries,
- const unsigned int *underflows)
+static int translate_table(struct xt_table_info *newinfo, void *entry0,
+ const struct arpt_replace *repl)
{
struct arpt_entry *iter;
unsigned int i;
int ret = 0;
- newinfo->size = size;
- newinfo->number = number;
+ newinfo->size = repl->size;
+ newinfo->number = repl->num_entries;
/* Init all hooks to impossible value. */
for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
@@ -650,7 +644,8 @@ static int translate_table(const char *name,
/* Walk through entries, checking offsets. */
xt_entry_foreach(iter, entry0, newinfo->size) {
ret = check_entry_size_and_hooks(iter, newinfo, entry0,
- entry0 + size, hook_entries, underflows, valid_hooks);
+ entry0 + repl->size, repl->hook_entry, repl->underflow,
+ repl->valid_hooks);
if (ret != 0)
break;
++i;
@@ -659,30 +654,30 @@ static int translate_table(const char *name,
if (ret != 0)
return ret;
- if (i != number) {
+ if (i != repl->num_entries) {
duprintf("translate_table: %u not %u entries\n",
- i, number);
+ i, repl->num_entries);
return -EINVAL;
}
/* Check hooks all assigned */
for (i = 0; i < NF_ARP_NUMHOOKS; i++) {
/* Only hooks which are valid */
- if (!(valid_hooks & (1 << i)))
+ if (!(repl->valid_hooks & (1 << i)))
continue;
if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
duprintf("Invalid hook entry %u %u\n",
- i, hook_entries[i]);
+ i, repl->hook_entry[i]);
return -EINVAL;
}
if (newinfo->underflow[i] == 0xFFFFFFFF) {
duprintf("Invalid underflow %u %u\n",
- i, underflows[i]);
+ i, repl->underflow[i]);
return -EINVAL;
}
}
- if (!mark_source_chains(newinfo, valid_hooks, entry0)) {
+ if (!mark_source_chains(newinfo, repl->valid_hooks, entry0)) {
duprintf("Looping hook\n");
return -ELOOP;
}
@@ -690,7 +685,7 @@ static int translate_table(const char *name,
/* Finally, each sanity check must pass */
i = 0;
xt_entry_foreach(iter, entry0, newinfo->size) {
- ret = find_check_entry(iter, name, size);
+ ret = find_check_entry(iter, repl->name, repl->size);
if (ret != 0)
break;
++i;
@@ -1101,9 +1096,7 @@ static int do_replace(struct net *net, const void __user *user,
goto free_newinfo;
}
- ret = translate_table(tmp.name, tmp.valid_hooks,
- newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
- tmp.hook_entry, tmp.underflow);
+ ret = translate_table(newinfo, loc_cpu_entry, &tmp);
if (ret != 0)
goto free_newinfo;
@@ -1795,12 +1788,7 @@ struct xt_table *arpt_register_table(struct net *net,
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
memcpy(loc_cpu_entry, repl->entries, repl->size);
- ret = translate_table(table->name, table->valid_hooks,
- newinfo, loc_cpu_entry, repl->size,
- repl->num_entries,
- repl->hook_entry,
- repl->underflow);
-
+ ret = translate_table(newinfo, loc_cpu_entry, repl);
duprintf("arpt_register_table: translate table gives %d\n", ret);
if (ret != 0)
goto out_free;
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 36edc7d..c92f4e5 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -815,22 +815,15 @@ cleanup_entry(struct ipt_entry *e, struct net *net)
/* Checks and translates the user-supplied table segment (held in
newinfo) */
static int
-translate_table(struct net *net,
- const char *name,
- unsigned int valid_hooks,
- struct xt_table_info *newinfo,
- void *entry0,
- unsigned int size,
- unsigned int number,
- const unsigned int *hook_entries,
- const unsigned int *underflows)
+translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ const struct ipt_replace *repl)
{
struct ipt_entry *iter;
unsigned int i;
int ret = 0;
- newinfo->size = size;
- newinfo->number = number;
+ newinfo->size = repl->size;
+ newinfo->number = repl->num_entries;
/* Init all hooks to impossible value. */
for (i = 0; i < NF_INET_NUMHOOKS; i++) {
@@ -843,42 +836,43 @@ translate_table(struct net *net,
/* Walk through entries, checking offsets. */
xt_entry_foreach(iter, entry0, newinfo->size) {
ret = check_entry_size_and_hooks(iter, newinfo, entry0,
- entry0 + size, hook_entries, underflows, valid_hooks);
+ entry0 + repl->size, repl->hook_entry, repl->underflow,
+ repl->valid_hooks);
if (ret != 0)
return ret;
++i;
}
- if (i != number) {
+ if (i != repl->num_entries) {
duprintf("translate_table: %u not %u entries\n",
- i, number);
+ i, repl->num_entries);
return -EINVAL;
}
/* Check hooks all assigned */
for (i = 0; i < NF_INET_NUMHOOKS; i++) {
/* Only hooks which are valid */
- if (!(valid_hooks & (1 << i)))
+ if (!(repl->valid_hooks & (1 << i)))
continue;
if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
duprintf("Invalid hook entry %u %u\n",
- i, hook_entries[i]);
+ i, repl->hook_entry[i]);
return -EINVAL;
}
if (newinfo->underflow[i] == 0xFFFFFFFF) {
duprintf("Invalid underflow %u %u\n",
- i, underflows[i]);
+ i, repl->underflow[i]);
return -EINVAL;
}
}
- if (!mark_source_chains(newinfo, valid_hooks, entry0))
+ if (!mark_source_chains(newinfo, repl->valid_hooks, entry0))
return -ELOOP;
/* Finally, each sanity check must pass */
i = 0;
xt_entry_foreach(iter, entry0, newinfo->size) {
- ret = find_check_entry(iter, net, name, size);
+ ret = find_check_entry(iter, net, repl->name, repl->size);
if (ret != 0)
break;
++i;
@@ -1311,9 +1305,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
goto free_newinfo;
}
- ret = translate_table(net, tmp.name, tmp.valid_hooks,
- newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
- tmp.hook_entry, tmp.underflow);
+ ret = translate_table(net, newinfo, loc_cpu_entry, &tmp);
if (ret != 0)
goto free_newinfo;
@@ -2112,11 +2104,7 @@ struct xt_table *ipt_register_table(struct net *net,
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
memcpy(loc_cpu_entry, repl->entries, repl->size);
- ret = translate_table(net, table->name, table->valid_hooks,
- newinfo, loc_cpu_entry, repl->size,
- repl->num_entries,
- repl->hook_entry,
- repl->underflow);
+ ret = translate_table(net, newinfo, loc_cpu_entry, repl);
if (ret != 0)
goto out_free;
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index c5a963e..f704286 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -845,22 +845,15 @@ static void cleanup_entry(struct ip6t_entry *e, struct net *net)
/* Checks and translates the user-supplied table segment (held in
newinfo) */
static int
-translate_table(struct net *net,
- const char *name,
- unsigned int valid_hooks,
- struct xt_table_info *newinfo,
- void *entry0,
- unsigned int size,
- unsigned int number,
- const unsigned int *hook_entries,
- const unsigned int *underflows)
+translate_table(struct net *net, struct xt_table_info *newinfo, void *entry0,
+ const struct ip6t_replace *repl)
{
struct ip6t_entry *iter;
unsigned int i;
int ret = 0;
- newinfo->size = size;
- newinfo->number = number;
+ newinfo->size = repl->size;
+ newinfo->number = repl->num_entries;
/* Init all hooks to impossible value. */
for (i = 0; i < NF_INET_NUMHOOKS; i++) {
@@ -873,42 +866,43 @@ translate_table(struct net *net,
/* Walk through entries, checking offsets. */
xt_entry_foreach(iter, entry0, newinfo->size) {
ret = check_entry_size_and_hooks(iter, newinfo, entry0,
- entry0 + size, hook_entries, underflows, valid_hooks);
+ entry0 + repl->size, repl->hook_entry, repl->underflow,
+ repl->valid_hooks);
if (ret != 0)
return ret;
++i;
}
- if (i != number) {
+ if (i != repl->num_entries) {
duprintf("translate_table: %u not %u entries\n",
- i, number);
+ i, repl->num_entries);
return -EINVAL;
}
/* Check hooks all assigned */
for (i = 0; i < NF_INET_NUMHOOKS; i++) {
/* Only hooks which are valid */
- if (!(valid_hooks & (1 << i)))
+ if (!(repl->valid_hooks & (1 << i)))
continue;
if (newinfo->hook_entry[i] == 0xFFFFFFFF) {
duprintf("Invalid hook entry %u %u\n",
- i, hook_entries[i]);
+ i, repl->hook_entry[i]);
return -EINVAL;
}
if (newinfo->underflow[i] == 0xFFFFFFFF) {
duprintf("Invalid underflow %u %u\n",
- i, underflows[i]);
+ i, repl->underflow[i]);
return -EINVAL;
}
}
- if (!mark_source_chains(newinfo, valid_hooks, entry0))
+ if (!mark_source_chains(newinfo, repl->valid_hooks, entry0))
return -ELOOP;
/* Finally, each sanity check must pass */
i = 0;
xt_entry_foreach(iter, entry0, newinfo->size) {
- ret = find_check_entry(iter, net, name, size);
+ ret = find_check_entry(iter, net, repl->name, repl->size);
if (ret != 0)
break;
++i;
@@ -1342,9 +1336,7 @@ do_replace(struct net *net, const void __user *user, unsigned int len)
goto free_newinfo;
}
- ret = translate_table(net, tmp.name, tmp.valid_hooks,
- newinfo, loc_cpu_entry, tmp.size, tmp.num_entries,
- tmp.hook_entry, tmp.underflow);
+ ret = translate_table(net, newinfo, loc_cpu_entry, &tmp);
if (ret != 0)
goto free_newinfo;
@@ -2145,11 +2137,7 @@ struct xt_table *ip6t_register_table(struct net *net,
loc_cpu_entry = newinfo->entries[raw_smp_processor_id()];
memcpy(loc_cpu_entry, repl->entries, repl->size);
- ret = translate_table(net, table->name, table->valid_hooks,
- newinfo, loc_cpu_entry, repl->size,
- repl->num_entries,
- repl->hook_entry,
- repl->underflow);
+ ret = translate_table(net, newinfo, loc_cpu_entry, repl);
if (ret != 0)
goto out_free;
--
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