From: Jan Engelhardt Date: Wed, 8 Oct 2008 09:35:19 +0000 (+0200) Subject: netfilter: xtables: move extension arguments into compound structure (6/6) X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a2df1648ba615dd5908e9a1fa7b2f133fa302487;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git netfilter: xtables: move extension arguments into compound structure (6/6) This patch does this for target extensions' destroy functions. Signed-off-by: Jan Engelhardt Signed-off-by: Patrick McHardy --- diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index 8daeb496ba7..e3b3b669a14 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -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); diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index cf823c21c16..29d8061fa15 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 b3238d0101c..3bab78330cf 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 e592c54d499..50b9a6c34c3 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 6c7254e0256..7ac1677419a 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 ca14fb8bd36..d934a699463 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 8fc9f35e67d..c5a5072e005 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 2041a3d4b4d..b6e3f3f125f 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 edf4ab1f30f..43f5676b1af 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 e5777227192..7a6f9e6f5df 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 a54dc3f8234..b951d422db9 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)