提交 a2df1648 编写于 作者: J Jan Engelhardt 提交者: Patrick McHardy

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

This patch does this for target extensions' destroy functions.
Signed-off-by: NJan Engelhardt <jengelh@medozas.de>
Signed-off-by: NPatrick McHardy <kaber@trash.net>
上级 af5d6dc2
......@@ -251,6 +251,12 @@ struct xt_tgchk_param {
unsigned int hook_mask;
};
/* Target destructor parameters */
struct xt_tgdtor_param {
const struct xt_target *target;
void *targinfo;
};
struct xt_match
{
struct list_head list;
......@@ -311,7 +317,7 @@ struct xt_target
bool (*checkentry)(const struct xt_tgchk_param *);
/* Called when entry of this type deleted. */
void (*destroy)(const struct xt_target *target, void *targinfo);
void (*destroy)(const struct xt_tgdtor_param *);
/* Called when userspace align differs from kernel space one */
void (*compat_from_user)(void *dst, void *src);
......
......@@ -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;
}
......
......@@ -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;
}
......
......@@ -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;
}
......
......@@ -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
......
......@@ -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;
}
......
......@@ -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
......
......@@ -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 = {
......
......@@ -139,10 +139,9 @@ static bool xt_rateest_tg_checkentry(const struct xt_tgchk_param *par)
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);
}
......
......@@ -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:
......
......@@ -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)
......
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