netfilter: xtables: move extension arguments into compound structure (3/6)
This patch does this for match extensions' destroy functions.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index 763a704..c79c883 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -212,6 +212,12 @@
unsigned int hook_mask;
};
+/* Match destructor parameters */
+struct xt_mtdtor_param {
+ const struct xt_match *match;
+ void *matchinfo;
+};
+
struct xt_match
{
struct list_head list;
@@ -230,7 +236,7 @@
bool (*checkentry)(const struct xt_mtchk_param *);
/* Called when entry of this type deleted. */
- void (*destroy)(const struct xt_match *match, void *matchinfo);
+ void (*destroy)(const struct xt_mtdtor_param *);
/* Called when userspace align differs from kernel space one */
void (*compat_from_user)(void *dst, void *src);
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 5ce37b2..0320b52 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -558,12 +558,16 @@
static inline int
ebt_cleanup_match(struct ebt_entry_match *m, unsigned int *i)
{
+ struct xt_mtdtor_param par;
+
if (i && (*i)-- == 0)
return 1;
- if (m->u.match->destroy)
- m->u.match->destroy(m->u.match, m->data);
- module_put(m->u.match->me);
+ par.match = m->u.match;
+ par.matchinfo = m->data;
+ if (par.match->destroy != NULL)
+ par.match->destroy(&par);
+ module_put(par.match->me);
return 0;
}
@@ -609,7 +613,7 @@
unsigned int i, j, hook = 0, hookmask = 0;
size_t gap;
int ret;
- struct xt_mtchk_param par;
+ struct xt_mtchk_param mtpar;
/* don't mess with the struct ebt_entries */
if (e->bitmask == 0)
@@ -651,10 +655,10 @@
}
i = 0;
- par.table = name;
- par.entryinfo = e;
- par.hook_mask = hookmask;
- ret = EBT_MATCH_ITERATE(e, ebt_check_match, &par, &i);
+ mtpar.table = name;
+ mtpar.entryinfo = e;
+ mtpar.hook_mask = hookmask;
+ ret = EBT_MATCH_ITERATE(e, ebt_check_match, &mtpar, &i);
if (ret != 0)
goto cleanup_matches;
j = 0;
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 4147298..12ad4d5 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -576,12 +576,16 @@
static int
cleanup_match(struct ipt_entry_match *m, unsigned int *i)
{
+ struct xt_mtdtor_param par;
+
if (i && (*i)-- == 0)
return 1;
- if (m->u.kernel.match->destroy)
- m->u.kernel.match->destroy(m->u.kernel.match, m->data);
- module_put(m->u.kernel.match->me);
+ par.match = m->u.kernel.match;
+ par.matchinfo = m->data;
+ if (par.match->destroy != NULL)
+ par.match->destroy(&par);
+ module_put(par.match->me);
return 0;
}
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 9c843e37..891358e 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -599,12 +599,16 @@
static int
cleanup_match(struct ip6t_entry_match *m, unsigned int *i)
{
+ struct xt_mtdtor_param par;
+
if (i && (*i)-- == 0)
return 1;
- if (m->u.kernel.match->destroy)
- m->u.kernel.match->destroy(m->u.kernel.match, m->data);
- module_put(m->u.kernel.match->me);
+ par.match = m->u.kernel.match;
+ par.matchinfo = m->data;
+ if (par.match->destroy != NULL)
+ par.match->destroy(&par);
+ module_put(par.match->me);
return 0;
}
diff --git a/net/netfilter/xt_connbytes.c b/net/netfilter/xt_connbytes.c
index 43a36c7..5bf4aa0 100644
--- a/net/netfilter/xt_connbytes.c
+++ b/net/netfilter/xt_connbytes.c
@@ -115,9 +115,9 @@
return true;
}
-static void connbytes_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void connbytes_mt_destroy(const struct xt_mtdtor_param *par)
{
- nf_ct_l3proto_module_put(match->family);
+ nf_ct_l3proto_module_put(par->match->family);
}
static struct xt_match connbytes_mt_reg[] __read_mostly = {
diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c
index 1361e99..bfb3ee6 100644
--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -246,16 +246,15 @@
return true;
}
-static void
-connlimit_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void connlimit_mt_destroy(const struct xt_mtdtor_param *par)
{
- const struct xt_connlimit_info *info = matchinfo;
+ const struct xt_connlimit_info *info = par->matchinfo;
struct xt_connlimit_conn *conn;
struct xt_connlimit_conn *tmp;
struct list_head *hash = info->data->iphash;
unsigned int i;
- nf_ct_l3proto_module_put(match->family);
+ nf_ct_l3proto_module_put(par->match->family);
for (i = 0; i < ARRAY_SIZE(info->data->iphash); ++i) {
list_for_each_entry_safe(conn, tmp, &hash[i], list) {
diff --git a/net/netfilter/xt_connmark.c b/net/netfilter/xt_connmark.c
index b935b78..c708577 100644
--- a/net/netfilter/xt_connmark.c
+++ b/net/netfilter/xt_connmark.c
@@ -87,10 +87,9 @@
return true;
}
-static void
-connmark_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void connmark_mt_destroy(const struct xt_mtdtor_param *par)
{
- nf_ct_l3proto_module_put(match->family);
+ nf_ct_l3proto_module_put(par->match->family);
}
#ifdef CONFIG_COMPAT
diff --git a/net/netfilter/xt_conntrack.c b/net/netfilter/xt_conntrack.c
index f04c46a..5cd58d7 100644
--- a/net/netfilter/xt_conntrack.c
+++ b/net/netfilter/xt_conntrack.c
@@ -288,10 +288,9 @@
return true;
}
-static void
-conntrack_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void conntrack_mt_destroy(const struct xt_mtdtor_param *par)
{
- nf_ct_l3proto_module_put(match->family);
+ nf_ct_l3proto_module_put(par->match->family);
}
#ifdef CONFIG_COMPAT
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 2f73820e..6fc4292 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -748,17 +748,16 @@
}
static void
-hashlimit_mt_destroy_v0(const struct xt_match *match, void *matchinfo)
+hashlimit_mt_destroy_v0(const struct xt_mtdtor_param *par)
{
- const struct xt_hashlimit_info *r = matchinfo;
+ const struct xt_hashlimit_info *r = par->matchinfo;
htable_put(r->hinfo);
}
-static void
-hashlimit_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void hashlimit_mt_destroy(const struct xt_mtdtor_param *par)
{
- const struct xt_hashlimit_mtinfo1 *info = matchinfo;
+ const struct xt_hashlimit_mtinfo1 *info = par->matchinfo;
htable_put(info->hinfo);
}
diff --git a/net/netfilter/xt_helper.c b/net/netfilter/xt_helper.c
index 86d3c33..280c9843 100644
--- a/net/netfilter/xt_helper.c
+++ b/net/netfilter/xt_helper.c
@@ -67,9 +67,9 @@
return true;
}
-static void helper_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void helper_mt_destroy(const struct xt_mtdtor_param *par)
{
- nf_ct_l3proto_module_put(match->family);
+ nf_ct_l3proto_module_put(par->match->family);
}
static struct xt_match helper_mt_reg[] __read_mostly = {
diff --git a/net/netfilter/xt_rateest.c b/net/netfilter/xt_rateest.c
index 4b05ce1..220a1d5 100644
--- a/net/netfilter/xt_rateest.c
+++ b/net/netfilter/xt_rateest.c
@@ -117,10 +117,9 @@
return false;
}
-static void xt_rateest_mt_destroy(const struct xt_match *match,
- void *matchinfo)
+static void xt_rateest_mt_destroy(const struct xt_mtdtor_param *par)
{
- struct xt_rateest_match_info *info = matchinfo;
+ struct xt_rateest_match_info *info = par->matchinfo;
xt_rateest_put(info->est1);
if (info->est2)
diff --git a/net/netfilter/xt_recent.c b/net/netfilter/xt_recent.c
index a512b49..4ebd4ca 100644
--- a/net/netfilter/xt_recent.c
+++ b/net/netfilter/xt_recent.c
@@ -349,9 +349,9 @@
return ret;
}
-static void recent_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void recent_mt_destroy(const struct xt_mtdtor_param *par)
{
- const struct xt_recent_mtinfo *info = matchinfo;
+ const struct xt_recent_mtinfo *info = par->matchinfo;
struct recent_table *t;
mutex_lock(&recent_mutex);
diff --git a/net/netfilter/xt_state.c b/net/netfilter/xt_state.c
index 88b1235..4c946cb 100644
--- a/net/netfilter/xt_state.c
+++ b/net/netfilter/xt_state.c
@@ -47,9 +47,9 @@
return true;
}
-static void state_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void state_mt_destroy(const struct xt_mtdtor_param *par)
{
- nf_ct_l3proto_module_put(match->family);
+ nf_ct_l3proto_module_put(par->match->family);
}
static struct xt_match state_mt_reg[] __read_mostly = {
diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c
index c9407aa..b4d7741 100644
--- a/net/netfilter/xt_string.c
+++ b/net/netfilter/xt_string.c
@@ -70,9 +70,9 @@
return true;
}
-static void string_mt_destroy(const struct xt_match *match, void *matchinfo)
+static void string_mt_destroy(const struct xt_mtdtor_param *par)
{
- textsearch_destroy(STRING_TEXT_PRIV(matchinfo)->config);
+ textsearch_destroy(STRING_TEXT_PRIV(par->matchinfo)->config);
}
static struct xt_match xt_string_mt_reg[] __read_mostly = {
