netfilter: xtables: move extension arguments into compound structure (6/6)

This patch does this for target extensions' destroy functions.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

10 files changed, 50 insertions, 31 deletions

diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index cf823c21c166..29d8061fa153 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -581,18 +581,23 @@ ebt_cleanup_match(struct ebt_entry_match *m, unsigned int *i)
 static inline int
 ebt_cleanup_watcher(struct ebt_entry_watcher *w, unsigned int *i)
 {
+        struct xt_tgdtor_param par;
+
         if (i && (*i)-- == 0)
                 return 1;
-        if (w->u.watcher->destroy)
-                w->u.watcher->destroy(w->u.watcher, w->data);
-        module_put(w->u.watcher->me);
 
+        par.target   = w->u.watcher;
+        par.targinfo = w->data;
+        if (par.target->destroy != NULL)
+                par.target->destroy(&par);
+        module_put(par.target->me);
         return 0;
 }
 
 static inline int
 ebt_cleanup_entry(struct ebt_entry *e, unsigned int *cnt)
 {
+        struct xt_tgdtor_param par;
         struct ebt_entry_target *t;
 
         if (e->bitmask == 0)
@@ -603,10 +608,12 @@ ebt_cleanup_entry(struct ebt_entry *e, unsigned int *cnt)
         EBT_WATCHER_ITERATE(e, ebt_cleanup_watcher, NULL);
         EBT_MATCH_ITERATE(e, ebt_cleanup_match, NULL);
         t = (struct ebt_entry_target *)(((char *)e) + e->target_offset);
-        if (t->u.target->destroy)
-                t->u.target->destroy(t->u.target, t->data);
-        module_put(t->u.target->me);
 
+        par.target   = t->u.target;
+        par.targinfo = t->data;
+        if (par.target->destroy != NULL)
+                par.target->destroy(&par);
+        module_put(par.target->me);
         return 0;
 }
 
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index b3238d0101cc..3bab78330cf8 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -557,15 +557,18 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
 
 static inline int cleanup_entry(struct arpt_entry *e, unsigned int *i)
 {
+        struct xt_tgdtor_param par;
         struct arpt_entry_target *t;
 
         if (i && (*i)-- == 0)
                 return 1;
 
         t = arpt_get_target(e);
-        if (t->u.kernel.target->destroy)
-                t->u.kernel.target->destroy(t->u.kernel.target, t->data);
-        module_put(t->u.kernel.target->me);
+        par.target   = t->u.kernel.target;
+        par.targinfo = t->data;
+        if (par.target->destroy != NULL)
+                par.target->destroy(&par);
+        module_put(par.target->me);
         return 0;
 }
 
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index e592c54d4992..50b9a6c34c38 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -768,6 +768,7 @@ check_entry_size_and_hooks(struct ipt_entry *e,
 static int
 cleanup_entry(struct ipt_entry *e, unsigned int *i)
 {
+        struct xt_tgdtor_param par;
         struct ipt_entry_target *t;
 
         if (i && (*i)-- == 0)
@@ -776,9 +777,12 @@ cleanup_entry(struct ipt_entry *e, unsigned int *i)
         /* Cleanup all matches */
         IPT_MATCH_ITERATE(e, cleanup_match, NULL);
         t = ipt_get_target(e);
-        if (t->u.kernel.target->destroy)
-                t->u.kernel.target->destroy(t->u.kernel.target, t->data);
-        module_put(t->u.kernel.target->me);
+
+        par.target   = t->u.kernel.target;
+        par.targinfo = t->data;
+        if (par.target->destroy != NULL)
+                par.target->destroy(&par);
+        module_put(par.target->me);
         return 0;
 }
 
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 6c7254e02561..7ac1677419a9 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -411,9 +411,9 @@ static bool clusterip_tg_check(const struct xt_tgchk_param *par)
 }
 
 /* drop reference count of cluster config when rule is deleted */
-static void clusterip_tg_destroy(const struct xt_target *target, void *targinfo)
+static void clusterip_tg_destroy(const struct xt_tgdtor_param *par)
 {
-        const struct ipt_clusterip_tgt_info *cipinfo = targinfo;
+        const struct ipt_clusterip_tgt_info *cipinfo = par->targinfo;
 
         /* if no more entries are referencing the config, remove it
          * from the list and destroy the proc entry */
@@ -421,7 +421,7 @@ static void clusterip_tg_destroy(const struct xt_target *target, void *targinfo)
 
         clusterip_config_put(cipinfo->config);
 
-        nf_ct_l3proto_module_put(target->family);
+        nf_ct_l3proto_module_put(par->target->family);
 }
 
 #ifdef CONFIG_COMPAT
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index ca14fb8bd362..d934a6994632 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -793,6 +793,7 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
 static int
 cleanup_entry(struct ip6t_entry *e, unsigned int *i)
 {
+        struct xt_tgdtor_param par;
         struct ip6t_entry_target *t;
 
         if (i && (*i)-- == 0)
@@ -801,9 +802,12 @@ cleanup_entry(struct ip6t_entry *e, unsigned int *i)
         /* Cleanup all matches */
         IP6T_MATCH_ITERATE(e, cleanup_match, NULL);
         t = ip6t_get_target(e);
-        if (t->u.kernel.target->destroy)
-                t->u.kernel.target->destroy(t->u.kernel.target, t->data);
-        module_put(t->u.kernel.target->me);
+
+        par.target   = t->u.kernel.target;
+        par.targinfo = t->data;
+        if (par.target->destroy != NULL)
+                par.target->destroy(&par);
+        module_put(par.target->me);
         return 0;
 }
 
diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c
index 8fc9f35e67df..c5a5072e005d 100644
--- a/net/netfilter/xt_CONNMARK.c
+++ b/net/netfilter/xt_CONNMARK.c
@@ -146,10 +146,9 @@ static bool connmark_tg_check(const struct xt_tgchk_param *par)
         return true;
 }
 
-static void
-connmark_tg_destroy(const struct xt_target *target, void *targinfo)
+static void connmark_tg_destroy(const struct xt_tgdtor_param *par)
 {
-        nf_ct_l3proto_module_put(target->family);
+        nf_ct_l3proto_module_put(par->target->family);
 }
 
 #ifdef CONFIG_COMPAT
diff --git a/net/netfilter/xt_CONNSECMARK.c b/net/netfilter/xt_CONNSECMARK.c
index 2041a3d4b4d8..b6e3f3f125fd 100644
--- a/net/netfilter/xt_CONNSECMARK.c
+++ b/net/netfilter/xt_CONNSECMARK.c
@@ -114,10 +114,9 @@ static bool connsecmark_tg_check(const struct xt_tgchk_param *par)
         return true;
 }
 
-static void
-connsecmark_tg_destroy(const struct xt_target *target, void *targinfo)
+static void connsecmark_tg_destroy(const struct xt_tgdtor_param *par)
 {
-        nf_ct_l3proto_module_put(target->family);
+        nf_ct_l3proto_module_put(par->target->family);
 }
 
 static struct xt_target connsecmark_tg_reg[] __read_mostly = {
diff --git a/net/netfilter/xt_RATEEST.c b/net/netfilter/xt_RATEEST.c
index edf4ab1f30ff..43f5676b1af4 100644
--- a/net/netfilter/xt_RATEEST.c
+++ b/net/netfilter/xt_RATEEST.c
@@ -139,10 +139,9 @@ err1:
         return false;
 }
 
-static void xt_rateest_tg_destroy(const struct xt_target *target,
-                                  void *targinfo)
+static void xt_rateest_tg_destroy(const struct xt_tgdtor_param *par)
 {
-        struct xt_rateest_target_info *info = targinfo;
+        struct xt_rateest_target_info *info = par->targinfo;
 
         xt_rateest_put(info->est);
 }
diff --git a/net/netfilter/xt_SECMARK.c b/net/netfilter/xt_SECMARK.c
index e5777227192c..7a6f9e6f5dfa 100644
--- a/net/netfilter/xt_SECMARK.c
+++ b/net/netfilter/xt_SECMARK.c
@@ -113,7 +113,7 @@ static bool secmark_tg_check(const struct xt_tgchk_param *par)
         return true;
 }
 
-static void secmark_tg_destroy(const struct xt_target *target, void *targinfo)
+static void secmark_tg_destroy(const struct xt_tgdtor_param *par)
 {
         switch (mode) {
         case SECMARK_MODE_SEL:
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index a54dc3f8234f..b951d422db9b 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -67,9 +67,13 @@ static int ipt_init_target(struct ipt_entry_target *t, char *table, unsigned int
 
 static void ipt_destroy_target(struct ipt_entry_target *t)
 {
-        if (t->u.kernel.target->destroy)
-                t->u.kernel.target->destroy(t->u.kernel.target, t->data);
-        module_put(t->u.kernel.target->me);
+        struct xt_tgdtor_param par = {
+                .target   = t->u.kernel.target,
+                .targinfo = t->data,
+        };
+        if (par.target->destroy != NULL)
+                par.target->destroy(&par);
+        module_put(par.target->me);
 }
 
 static int tcf_ipt_release(struct tcf_ipt *ipt, int bind)