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openwrt/target/linux/generic/backport-4.14/338-v4.16-netfilter-nf_tabl...

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From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue, 9 Jan 2018 02:48:47 +0100
Subject: [PATCH] netfilter: nf_tables: get rid of struct nft_af_info
abstraction
Remove the infrastructure to register/unregister nft_af_info structure,
this structure stores no useful information anymore.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -956,28 +956,12 @@ struct nft_table {
struct list_head flowtables;
u64 hgenerator;
u32 use;
- u16 flags:14,
+ u16 family:6,
+ flags:8,
genmask:2;
- struct nft_af_info *afi;
char *name;
};
-/**
- * struct nft_af_info - nf_tables address family info
- *
- * @list: used internally
- * @family: address family
- * @owner: module owner
- */
-struct nft_af_info {
- struct list_head list;
- int family;
- struct module *owner;
-};
-
-int nft_register_afinfo(struct nft_af_info *);
-void nft_unregister_afinfo(struct nft_af_info *);
-
int nft_register_chain_type(const struct nf_chain_type *);
void nft_unregister_chain_type(const struct nf_chain_type *);
@@ -1145,9 +1129,6 @@ void nft_trace_notify(struct nft_tracein
#define nft_dereference(p) \
nfnl_dereference(p, NFNL_SUBSYS_NFTABLES)
-#define MODULE_ALIAS_NFT_FAMILY(family) \
- MODULE_ALIAS("nft-afinfo-" __stringify(family))
-
#define MODULE_ALIAS_NFT_CHAIN(family, name) \
MODULE_ALIAS("nft-chain-" __stringify(family) "-" name)
--- a/net/bridge/netfilter/nf_tables_bridge.c
+++ b/net/bridge/netfilter/nf_tables_bridge.c
@@ -42,11 +42,6 @@ nft_do_chain_bridge(void *priv,
return nft_do_chain(&pkt, priv);
}
-static struct nft_af_info nft_af_bridge __read_mostly = {
- .family = NFPROTO_BRIDGE,
- .owner = THIS_MODULE,
-};
-
static const struct nf_chain_type filter_bridge = {
.name = "filter",
.type = NFT_CHAIN_T_DEFAULT,
@@ -68,28 +63,12 @@ static const struct nf_chain_type filter
static int __init nf_tables_bridge_init(void)
{
- int ret;
-
- ret = nft_register_afinfo(&nft_af_bridge);
- if (ret < 0)
- return ret;
-
- ret = nft_register_chain_type(&filter_bridge);
- if (ret < 0)
- goto err_register_chain;
-
- return ret;
-
-err_register_chain:
- nft_unregister_chain_type(&filter_bridge);
-
- return ret;
+ return nft_register_chain_type(&filter_bridge);
}
static void __exit nf_tables_bridge_exit(void)
{
nft_unregister_chain_type(&filter_bridge);
- nft_unregister_afinfo(&nft_af_bridge);
}
module_init(nf_tables_bridge_init);
@@ -97,4 +76,4 @@ module_exit(nf_tables_bridge_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_FAMILY(AF_BRIDGE);
+MODULE_ALIAS_NFT_CHAIN(AF_BRIDGE, "filter");
--- a/net/ipv4/netfilter/nf_tables_arp.c
+++ b/net/ipv4/netfilter/nf_tables_arp.c
@@ -27,11 +27,6 @@ nft_do_chain_arp(void *priv,
return nft_do_chain(&pkt, priv);
}
-static struct nft_af_info nft_af_arp __read_mostly = {
- .family = NFPROTO_ARP,
- .owner = THIS_MODULE,
-};
-
static const struct nf_chain_type filter_arp = {
.name = "filter",
.type = NFT_CHAIN_T_DEFAULT,
@@ -47,28 +42,12 @@ static const struct nf_chain_type filter
static int __init nf_tables_arp_init(void)
{
- int ret;
-
- ret = nft_register_afinfo(&nft_af_arp);
- if (ret < 0)
- return ret;
-
- ret = nft_register_chain_type(&filter_arp);
- if (ret < 0)
- goto err_register_chain;
-
- return 0;
-
-err_register_chain:
- nft_unregister_chain_type(&filter_arp);
-
- return ret;
+ return nft_register_chain_type(&filter_arp);
}
static void __exit nf_tables_arp_exit(void)
{
nft_unregister_chain_type(&filter_arp);
- nft_unregister_afinfo(&nft_af_arp);
}
module_init(nf_tables_arp_init);
@@ -76,4 +55,4 @@ module_exit(nf_tables_arp_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_FAMILY(3); /* NFPROTO_ARP */
+MODULE_ALIAS_NFT_CHAIN(3, "filter"); /* NFPROTO_ARP */
--- a/net/ipv4/netfilter/nf_tables_ipv4.c
+++ b/net/ipv4/netfilter/nf_tables_ipv4.c
@@ -30,11 +30,6 @@ static unsigned int nft_do_chain_ipv4(vo
return nft_do_chain(&pkt, priv);
}
-static struct nft_af_info nft_af_ipv4 __read_mostly = {
- .family = NFPROTO_IPV4,
- .owner = THIS_MODULE,
-};
-
static const struct nf_chain_type filter_ipv4 = {
.name = "filter",
.type = NFT_CHAIN_T_DEFAULT,
@@ -56,27 +51,12 @@ static const struct nf_chain_type filter
static int __init nf_tables_ipv4_init(void)
{
- int ret;
-
- ret = nft_register_afinfo(&nft_af_ipv4);
- if (ret < 0)
- return ret;
-
- ret = nft_register_chain_type(&filter_ipv4);
- if (ret < 0)
- goto err_register_chain;
-
- return 0;
-
-err_register_chain:
- nft_unregister_afinfo(&nft_af_ipv4);
- return ret;
+ return nft_register_chain_type(&filter_ipv4);
}
static void __exit nf_tables_ipv4_exit(void)
{
nft_unregister_chain_type(&filter_ipv4);
- nft_unregister_afinfo(&nft_af_ipv4);
}
module_init(nf_tables_ipv4_init);
@@ -84,4 +64,4 @@ module_exit(nf_tables_ipv4_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_FAMILY(AF_INET);
+MODULE_ALIAS_NFT_CHAIN(AF_INET, "filter");
--- a/net/ipv6/netfilter/nf_tables_ipv6.c
+++ b/net/ipv6/netfilter/nf_tables_ipv6.c
@@ -28,11 +28,6 @@ static unsigned int nft_do_chain_ipv6(vo
return nft_do_chain(&pkt, priv);
}
-static struct nft_af_info nft_af_ipv6 __read_mostly = {
- .family = NFPROTO_IPV6,
- .owner = THIS_MODULE,
-};
-
static const struct nf_chain_type filter_ipv6 = {
.name = "filter",
.type = NFT_CHAIN_T_DEFAULT,
@@ -54,26 +49,11 @@ static const struct nf_chain_type filter
static int __init nf_tables_ipv6_init(void)
{
- int ret;
-
- ret = nft_register_afinfo(&nft_af_ipv6);
- if (ret < 0)
- return ret;
-
- ret = nft_register_chain_type(&filter_ipv6);
- if (ret < 0)
- goto err_register_chain;
-
- return 0;
-
-err_register_chain:
- nft_unregister_afinfo(&nft_af_ipv6);
- return ret;
+ return nft_register_chain_type(&filter_ipv6);
}
static void __exit nf_tables_ipv6_exit(void)
{
- nft_unregister_afinfo(&nft_af_ipv6);
nft_unregister_chain_type(&filter_ipv6);
}
@@ -82,4 +62,4 @@ module_exit(nf_tables_ipv6_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_FAMILY(AF_INET6);
+MODULE_ALIAS_NFT_CHAIN(AF_INET6, "filter");
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -26,71 +26,6 @@
static LIST_HEAD(nf_tables_expressions);
static LIST_HEAD(nf_tables_objects);
static LIST_HEAD(nf_tables_flowtables);
-static LIST_HEAD(nf_tables_af_info);
-
-/**
- * nft_register_afinfo - register nf_tables address family info
- *
- * @afi: address family info to register
- *
- * Register the address family for use with nf_tables. Returns zero on
- * success or a negative errno code otherwise.
- */
-int nft_register_afinfo(struct nft_af_info *afi)
-{
- nfnl_lock(NFNL_SUBSYS_NFTABLES);
- list_add_tail_rcu(&afi->list, &nf_tables_af_info);
- nfnl_unlock(NFNL_SUBSYS_NFTABLES);
- return 0;
-}
-EXPORT_SYMBOL_GPL(nft_register_afinfo);
-
-/**
- * nft_unregister_afinfo - unregister nf_tables address family info
- *
- * @afi: address family info to unregister
- *
- * Unregister the address family for use with nf_tables.
- */
-void nft_unregister_afinfo(struct nft_af_info *afi)
-{
- nfnl_lock(NFNL_SUBSYS_NFTABLES);
- list_del_rcu(&afi->list);
- nfnl_unlock(NFNL_SUBSYS_NFTABLES);
-}
-EXPORT_SYMBOL_GPL(nft_unregister_afinfo);
-
-static struct nft_af_info *nft_afinfo_lookup(struct net *net, int family)
-{
- struct nft_af_info *afi;
-
- list_for_each_entry(afi, &nf_tables_af_info, list) {
- if (afi->family == family)
- return afi;
- }
- return NULL;
-}
-
-static struct nft_af_info *
-nf_tables_afinfo_lookup(struct net *net, int family, bool autoload)
-{
- struct nft_af_info *afi;
-
- afi = nft_afinfo_lookup(net, family);
- if (afi != NULL)
- return afi;
-#ifdef CONFIG_MODULES
- if (autoload) {
- nfnl_unlock(NFNL_SUBSYS_NFTABLES);
- request_module("nft-afinfo-%u", family);
- nfnl_lock(NFNL_SUBSYS_NFTABLES);
- afi = nft_afinfo_lookup(net, family);
- if (afi != NULL)
- return ERR_PTR(-EAGAIN);
- }
-#endif
- return ERR_PTR(-EAFNOSUPPORT);
-}
static void nft_ctx_init(struct nft_ctx *ctx,
struct net *net,
@@ -434,7 +369,7 @@ static struct nft_table *nft_table_looku
list_for_each_entry(table, &net->nft.tables, list) {
if (!nla_strcmp(nla, table->name) &&
- table->afi->family == family &&
+ table->family == family &&
nft_active_genmask(table, genmask))
return table;
}
@@ -575,7 +510,7 @@ static int nf_tables_dump_tables(struct
cb->seq = net->nft.base_seq;
list_for_each_entry_rcu(table, &net->nft.tables, list) {
- if (family != NFPROTO_UNSPEC && family != table->afi->family)
+ if (family != NFPROTO_UNSPEC && family != table->family)
continue;
if (idx < s_idx)
@@ -589,7 +524,7 @@ static int nf_tables_dump_tables(struct
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
NFT_MSG_NEWTABLE, NLM_F_MULTI,
- table->afi->family, table) < 0)
+ table->family, table) < 0)
goto done;
nl_dump_check_consistent(cb, nlmsg_hdr(skb));
@@ -609,7 +544,6 @@ static int nf_tables_gettable(struct net
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_cur(net);
- const struct nft_af_info *afi;
const struct nft_table *table;
struct sk_buff *skb2;
int family = nfmsg->nfgen_family;
@@ -622,11 +556,7 @@ static int nf_tables_gettable(struct net
return netlink_dump_start(nlsk, skb, nlh, &c);
}
- afi = nf_tables_afinfo_lookup(net, family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_TABLE_NAME], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_TABLE_NAME], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -746,19 +676,14 @@ static int nf_tables_newtable(struct net
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_next(net);
const struct nlattr *name;
- struct nft_af_info *afi;
struct nft_table *table;
int family = nfmsg->nfgen_family;
u32 flags = 0;
struct nft_ctx ctx;
int err;
- afi = nf_tables_afinfo_lookup(net, family, true);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
name = nla[NFTA_TABLE_NAME];
- table = nf_tables_table_lookup(net, name, afi->family, genmask);
+ table = nf_tables_table_lookup(net, name, family, genmask);
if (IS_ERR(table)) {
if (PTR_ERR(table) != -ENOENT)
return PTR_ERR(table);
@@ -768,7 +693,7 @@ static int nf_tables_newtable(struct net
if (nlh->nlmsg_flags & NLM_F_REPLACE)
return -EOPNOTSUPP;
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla);
return nf_tables_updtable(&ctx);
}
@@ -778,40 +703,34 @@ static int nf_tables_newtable(struct net
return -EINVAL;
}
- err = -EAFNOSUPPORT;
- if (!try_module_get(afi->owner))
- goto err1;
-
err = -ENOMEM;
table = kzalloc(sizeof(*table), GFP_KERNEL);
if (table == NULL)
- goto err2;
+ goto err_kzalloc;
table->name = nla_strdup(name, GFP_KERNEL);
if (table->name == NULL)
- goto err3;
+ goto err_strdup;
INIT_LIST_HEAD(&table->chains);
INIT_LIST_HEAD(&table->sets);
INIT_LIST_HEAD(&table->objects);
INIT_LIST_HEAD(&table->flowtables);
- table->afi = afi;
+ table->family = family;
table->flags = flags;
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla);
err = nft_trans_table_add(&ctx, NFT_MSG_NEWTABLE);
if (err < 0)
- goto err4;
+ goto err_trans;
list_add_tail_rcu(&table->list, &net->nft.tables);
return 0;
-err4:
+err_trans:
kfree(table->name);
-err3:
+err_strdup:
kfree(table);
-err2:
- module_put(afi->owner);
-err1:
+err_kzalloc:
return err;
}
@@ -882,10 +801,10 @@ static int nft_flush(struct nft_ctx *ctx
int err = 0;
list_for_each_entry_safe(table, nt, &ctx->net->nft.tables, list) {
- if (family != AF_UNSPEC && table->afi->family != family)
+ if (family != AF_UNSPEC && table->family != family)
continue;
- ctx->family = table->afi->family;
+ ctx->family = table->family;
if (!nft_is_active_next(ctx->net, table))
continue;
@@ -911,7 +830,6 @@ static int nf_tables_deltable(struct net
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_next(net);
- struct nft_af_info *afi;
struct nft_table *table;
int family = nfmsg->nfgen_family;
struct nft_ctx ctx;
@@ -920,11 +838,7 @@ static int nf_tables_deltable(struct net
if (family == AF_UNSPEC || nla[NFTA_TABLE_NAME] == NULL)
return nft_flush(&ctx, family);
- afi = nf_tables_afinfo_lookup(net, family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_TABLE_NAME], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_TABLE_NAME], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -933,7 +847,7 @@ static int nf_tables_deltable(struct net
table->use > 0)
return -EBUSY;
- ctx.family = afi->family;
+ ctx.family = family;
ctx.table = table;
return nft_flush_table(&ctx);
@@ -945,7 +859,6 @@ static void nf_tables_table_destroy(stru
kfree(ctx->table->name);
kfree(ctx->table);
- module_put(ctx->table->afi->owner);
}
int nft_register_chain_type(const struct nf_chain_type *ctype)
@@ -1174,7 +1087,7 @@ static int nf_tables_dump_chains(struct
cb->seq = net->nft.base_seq;
list_for_each_entry_rcu(table, &net->nft.tables, list) {
- if (family != NFPROTO_UNSPEC && family != table->afi->family)
+ if (family != NFPROTO_UNSPEC && family != table->family)
continue;
list_for_each_entry_rcu(chain, &table->chains, list) {
@@ -1190,7 +1103,7 @@ static int nf_tables_dump_chains(struct
cb->nlh->nlmsg_seq,
NFT_MSG_NEWCHAIN,
NLM_F_MULTI,
- table->afi->family, table,
+ table->family, table,
chain) < 0)
goto done;
@@ -1212,7 +1125,6 @@ static int nf_tables_getchain(struct net
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_cur(net);
- const struct nft_af_info *afi;
const struct nft_table *table;
const struct nft_chain *chain;
struct sk_buff *skb2;
@@ -1226,11 +1138,7 @@ static int nf_tables_getchain(struct net
return netlink_dump_start(nlsk, skb, nlh, &c);
}
- afi = nf_tables_afinfo_lookup(net, family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_CHAIN_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_CHAIN_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -1612,7 +1520,6 @@ static int nf_tables_newchain(struct net
const struct nlattr * uninitialized_var(name);
u8 genmask = nft_genmask_next(net);
int family = nfmsg->nfgen_family;
- struct nft_af_info *afi;
struct nft_table *table;
struct nft_chain *chain;
u8 policy = NF_ACCEPT;
@@ -1622,11 +1529,7 @@ static int nf_tables_newchain(struct net
create = nlh->nlmsg_flags & NLM_F_CREATE ? true : false;
- afi = nf_tables_afinfo_lookup(net, family, true);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_CHAIN_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_CHAIN_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -1667,7 +1570,7 @@ static int nf_tables_newchain(struct net
}
}
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, chain, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, chain, nla);
if (chain != NULL) {
if (nlh->nlmsg_flags & NLM_F_EXCL)
@@ -1688,7 +1591,6 @@ static int nf_tables_delchain(struct net
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_next(net);
- struct nft_af_info *afi;
struct nft_table *table;
struct nft_chain *chain;
struct nft_rule *rule;
@@ -1697,11 +1599,7 @@ static int nf_tables_delchain(struct net
u32 use;
int err;
- afi = nf_tables_afinfo_lookup(net, family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_CHAIN_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_CHAIN_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -1714,7 +1612,7 @@ static int nf_tables_delchain(struct net
chain->use > 0)
return -EBUSY;
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, chain, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, chain, nla);
use = chain->use;
list_for_each_entry(rule, &chain->rules, list) {
@@ -2145,7 +2043,7 @@ static int nf_tables_dump_rules(struct s
cb->seq = net->nft.base_seq;
list_for_each_entry_rcu(table, &net->nft.tables, list) {
- if (family != NFPROTO_UNSPEC && family != table->afi->family)
+ if (family != NFPROTO_UNSPEC && family != table->family)
continue;
if (ctx && ctx->table && strcmp(ctx->table, table->name) != 0)
@@ -2168,7 +2066,7 @@ static int nf_tables_dump_rules(struct s
cb->nlh->nlmsg_seq,
NFT_MSG_NEWRULE,
NLM_F_MULTI | NLM_F_APPEND,
- table->afi->family,
+ table->family,
table, chain, rule) < 0)
goto done;
@@ -2204,7 +2102,6 @@ static int nf_tables_getrule(struct net
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_cur(net);
- const struct nft_af_info *afi;
const struct nft_table *table;
const struct nft_chain *chain;
const struct nft_rule *rule;
@@ -2248,11 +2145,7 @@ static int nf_tables_getrule(struct net
return netlink_dump_start(nlsk, skb, nlh, &c);
}
- afi = nf_tables_afinfo_lookup(net, family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_RULE_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_RULE_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -2318,7 +2211,7 @@ static int nf_tables_newrule(struct net
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_next(net);
- struct nft_af_info *afi;
+ int family = nfmsg->nfgen_family;
struct nft_table *table;
struct nft_chain *chain;
struct nft_rule *rule, *old_rule = NULL;
@@ -2334,11 +2227,7 @@ static int nf_tables_newrule(struct net
create = nlh->nlmsg_flags & NLM_F_CREATE ? true : false;
- afi = nf_tables_afinfo_lookup(net, nfmsg->nfgen_family, create);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_RULE_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_RULE_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -2378,7 +2267,7 @@ static int nf_tables_newrule(struct net
return PTR_ERR(old_rule);
}
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, chain, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, chain, nla);
n = 0;
size = 0;
@@ -2500,18 +2389,13 @@ static int nf_tables_delrule(struct net
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_next(net);
- struct nft_af_info *afi;
struct nft_table *table;
struct nft_chain *chain = NULL;
struct nft_rule *rule;
int family = nfmsg->nfgen_family, err = 0;
struct nft_ctx ctx;
- afi = nf_tables_afinfo_lookup(net, family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_RULE_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_RULE_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -2523,7 +2407,7 @@ static int nf_tables_delrule(struct net
return PTR_ERR(chain);
}
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, chain, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, chain, nla);
if (chain) {
if (nla[NFTA_RULE_HANDLE]) {
@@ -2708,26 +2592,17 @@ static int nft_ctx_init_from_setattr(str
u8 genmask)
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
- struct nft_af_info *afi = NULL;
+ int family = nfmsg->nfgen_family;
struct nft_table *table = NULL;
- if (nfmsg->nfgen_family != NFPROTO_UNSPEC) {
- afi = nf_tables_afinfo_lookup(net, nfmsg->nfgen_family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
- }
-
if (nla[NFTA_SET_TABLE] != NULL) {
- if (afi == NULL)
- return -EAFNOSUPPORT;
-
table = nf_tables_table_lookup(net, nla[NFTA_SET_TABLE],
- afi->family, genmask);
+ family, genmask);
if (IS_ERR(table))
return PTR_ERR(table);
}
- nft_ctx_init(ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(ctx, net, skb, nlh, family, table, NULL, nla);
return 0;
}
@@ -2959,7 +2834,7 @@ static int nf_tables_dump_sets(struct sk
list_for_each_entry_rcu(table, &net->nft.tables, list) {
if (ctx->family != NFPROTO_UNSPEC &&
- ctx->family != table->afi->family)
+ ctx->family != table->family)
continue;
if (ctx->table && ctx->table != table)
@@ -2980,7 +2855,7 @@ static int nf_tables_dump_sets(struct sk
ctx_set = *ctx;
ctx_set.table = table;
- ctx_set.family = table->afi->family;
+ ctx_set.family = table->family;
if (nf_tables_fill_set(skb, &ctx_set, set,
NFT_MSG_NEWSET,
@@ -3092,8 +2967,8 @@ static int nf_tables_newset(struct net *
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_next(net);
+ int family = nfmsg->nfgen_family;
const struct nft_set_ops *ops;
- struct nft_af_info *afi;
struct nft_table *table;
struct nft_set *set;
struct nft_ctx ctx;
@@ -3203,16 +3078,12 @@ static int nf_tables_newset(struct net *
create = nlh->nlmsg_flags & NLM_F_CREATE ? true : false;
- afi = nf_tables_afinfo_lookup(net, nfmsg->nfgen_family, create);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_SET_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_SET_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla);
set = nf_tables_set_lookup(table, nla[NFTA_SET_NAME], genmask);
if (IS_ERR(set)) {
@@ -3474,19 +3345,15 @@ static int nft_ctx_init_from_elemattr(st
u8 genmask)
{
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
- struct nft_af_info *afi;
+ int family = nfmsg->nfgen_family;
struct nft_table *table;
- afi = nf_tables_afinfo_lookup(net, nfmsg->nfgen_family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
table = nf_tables_table_lookup(net, nla[NFTA_SET_ELEM_LIST_TABLE],
- afi->family, genmask);
+ family, genmask);
if (IS_ERR(table))
return PTR_ERR(table);
- nft_ctx_init(ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(ctx, net, skb, nlh, family, table, NULL, nla);
return 0;
}
@@ -3604,7 +3471,7 @@ static int nf_tables_dump_set(struct sk_
rcu_read_lock();
list_for_each_entry_rcu(table, &net->nft.tables, list) {
if (dump_ctx->ctx.family != NFPROTO_UNSPEC &&
- dump_ctx->ctx.family != table->afi->family)
+ dump_ctx->ctx.family != table->family)
continue;
if (table != dump_ctx->ctx.table)
@@ -3634,7 +3501,7 @@ static int nf_tables_dump_set(struct sk_
goto nla_put_failure;
nfmsg = nlmsg_data(nlh);
- nfmsg->nfgen_family = table->afi->family;
+ nfmsg->nfgen_family = table->family;
nfmsg->version = NFNETLINK_V0;
nfmsg->res_id = htons(net->nft.base_seq & 0xffff);
@@ -4516,7 +4383,6 @@ static int nf_tables_newobj(struct net *
const struct nft_object_type *type;
u8 genmask = nft_genmask_next(net);
int family = nfmsg->nfgen_family;
- struct nft_af_info *afi;
struct nft_table *table;
struct nft_object *obj;
struct nft_ctx ctx;
@@ -4528,11 +4394,7 @@ static int nf_tables_newobj(struct net *
!nla[NFTA_OBJ_DATA])
return -EINVAL;
- afi = nf_tables_afinfo_lookup(net, family, true);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_OBJ_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_OBJ_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -4551,7 +4413,7 @@ static int nf_tables_newobj(struct net *
return 0;
}
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla);
type = nft_obj_type_get(objtype);
if (IS_ERR(type))
@@ -4643,7 +4505,7 @@ static int nf_tables_dump_obj(struct sk_
cb->seq = net->nft.base_seq;
list_for_each_entry_rcu(table, &net->nft.tables, list) {
- if (family != NFPROTO_UNSPEC && family != table->afi->family)
+ if (family != NFPROTO_UNSPEC && family != table->family)
continue;
list_for_each_entry_rcu(obj, &table->objects, list) {
@@ -4666,7 +4528,7 @@ static int nf_tables_dump_obj(struct sk_
cb->nlh->nlmsg_seq,
NFT_MSG_NEWOBJ,
NLM_F_MULTI | NLM_F_APPEND,
- table->afi->family, table,
+ table->family, table,
obj, reset) < 0)
goto done;
@@ -4724,7 +4586,6 @@ static int nf_tables_getobj(struct net *
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_cur(net);
int family = nfmsg->nfgen_family;
- const struct nft_af_info *afi;
const struct nft_table *table;
struct nft_object *obj;
struct sk_buff *skb2;
@@ -4755,11 +4616,7 @@ static int nf_tables_getobj(struct net *
!nla[NFTA_OBJ_TYPE])
return -EINVAL;
- afi = nf_tables_afinfo_lookup(net, family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_OBJ_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_OBJ_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -4806,7 +4663,6 @@ static int nf_tables_delobj(struct net *
const struct nfgenmsg *nfmsg = nlmsg_data(nlh);
u8 genmask = nft_genmask_next(net);
int family = nfmsg->nfgen_family;
- struct nft_af_info *afi;
struct nft_table *table;
struct nft_object *obj;
struct nft_ctx ctx;
@@ -4816,11 +4672,7 @@ static int nf_tables_delobj(struct net *
!nla[NFTA_OBJ_NAME])
return -EINVAL;
- afi = nf_tables_afinfo_lookup(net, family, true);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
- table = nf_tables_table_lookup(net, nla[NFTA_OBJ_TABLE], afi->family,
+ table = nf_tables_table_lookup(net, nla[NFTA_OBJ_TABLE], family,
genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -4832,7 +4684,7 @@ static int nf_tables_delobj(struct net *
if (obj->use > 0)
return -EBUSY;
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla);
return nft_delobj(&ctx, obj);
}
@@ -5017,33 +4869,31 @@ err1:
return err;
}
-static const struct nf_flowtable_type *
-__nft_flowtable_type_get(const struct nft_af_info *afi)
+static const struct nf_flowtable_type *__nft_flowtable_type_get(u8 family)
{
const struct nf_flowtable_type *type;
list_for_each_entry(type, &nf_tables_flowtables, list) {
- if (afi->family == type->family)
+ if (family == type->family)
return type;
}
return NULL;
}
-static const struct nf_flowtable_type *
-nft_flowtable_type_get(const struct nft_af_info *afi)
+static const struct nf_flowtable_type *nft_flowtable_type_get(u8 family)
{
const struct nf_flowtable_type *type;
- type = __nft_flowtable_type_get(afi);
+ type = __nft_flowtable_type_get(family);
if (type != NULL && try_module_get(type->owner))
return type;
#ifdef CONFIG_MODULES
if (type == NULL) {
nfnl_unlock(NFNL_SUBSYS_NFTABLES);
- request_module("nf-flowtable-%u", afi->family);
+ request_module("nf-flowtable-%u", family);
nfnl_lock(NFNL_SUBSYS_NFTABLES);
- if (__nft_flowtable_type_get(afi))
+ if (__nft_flowtable_type_get(family))
return ERR_PTR(-EAGAIN);
}
#endif
@@ -5091,7 +4941,6 @@ static int nf_tables_newflowtable(struct
u8 genmask = nft_genmask_next(net);
int family = nfmsg->nfgen_family;
struct nft_flowtable *flowtable;
- struct nft_af_info *afi;
struct nft_table *table;
struct nft_ctx ctx;
int err, i, k;
@@ -5101,12 +4950,8 @@ static int nf_tables_newflowtable(struct
!nla[NFTA_FLOWTABLE_HOOK])
return -EINVAL;
- afi = nf_tables_afinfo_lookup(net, family, true);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
table = nf_tables_table_lookup(net, nla[NFTA_FLOWTABLE_TABLE],
- afi->family, genmask);
+ family, genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -5123,7 +4968,7 @@ static int nf_tables_newflowtable(struct
return 0;
}
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla);
flowtable = kzalloc(sizeof(*flowtable), GFP_KERNEL);
if (!flowtable)
@@ -5136,7 +4981,7 @@ static int nf_tables_newflowtable(struct
goto err1;
}
- type = nft_flowtable_type_get(afi);
+ type = nft_flowtable_type_get(family);
if (IS_ERR(type)) {
err = PTR_ERR(type);
goto err2;
@@ -5196,16 +5041,11 @@ static int nf_tables_delflowtable(struct
u8 genmask = nft_genmask_next(net);
int family = nfmsg->nfgen_family;
struct nft_flowtable *flowtable;
- struct nft_af_info *afi;
struct nft_table *table;
struct nft_ctx ctx;
- afi = nf_tables_afinfo_lookup(net, family, true);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
table = nf_tables_table_lookup(net, nla[NFTA_FLOWTABLE_TABLE],
- afi->family, genmask);
+ family, genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -5216,7 +5056,7 @@ static int nf_tables_delflowtable(struct
if (flowtable->use > 0)
return -EBUSY;
- nft_ctx_init(&ctx, net, skb, nlh, afi->family, table, NULL, nla);
+ nft_ctx_init(&ctx, net, skb, nlh, family, table, NULL, nla);
return nft_delflowtable(&ctx, flowtable);
}
@@ -5291,7 +5131,7 @@ static int nf_tables_dump_flowtable(stru
cb->seq = net->nft.base_seq;
list_for_each_entry_rcu(table, &net->nft.tables, list) {
- if (family != NFPROTO_UNSPEC && family != table->afi->family)
+ if (family != NFPROTO_UNSPEC && family != table->family)
continue;
list_for_each_entry_rcu(flowtable, &table->flowtables, list) {
@@ -5310,7 +5150,7 @@ static int nf_tables_dump_flowtable(stru
cb->nlh->nlmsg_seq,
NFT_MSG_NEWFLOWTABLE,
NLM_F_MULTI | NLM_F_APPEND,
- table->afi->family, flowtable) < 0)
+ table->family, flowtable) < 0)
goto done;
nl_dump_check_consistent(cb, nlmsg_hdr(skb));
@@ -5370,7 +5210,6 @@ static int nf_tables_getflowtable(struct
u8 genmask = nft_genmask_cur(net);
int family = nfmsg->nfgen_family;
struct nft_flowtable *flowtable;
- const struct nft_af_info *afi;
const struct nft_table *table;
struct sk_buff *skb2;
int err;
@@ -5396,12 +5235,8 @@ static int nf_tables_getflowtable(struct
if (!nla[NFTA_FLOWTABLE_NAME])
return -EINVAL;
- afi = nf_tables_afinfo_lookup(net, family, false);
- if (IS_ERR(afi))
- return PTR_ERR(afi);
-
table = nf_tables_table_lookup(net, nla[NFTA_FLOWTABLE_TABLE],
- afi->family, genmask);
+ family, genmask);
if (IS_ERR(table))
return PTR_ERR(table);
@@ -6572,7 +6407,7 @@ int __nft_release_basechain(struct nft_c
}
EXPORT_SYMBOL_GPL(__nft_release_basechain);
-static void __nft_release_afinfo(struct net *net)
+static void __nft_release_tables(struct net *net)
{
struct nft_flowtable *flowtable, *nf;
struct nft_table *table, *nt;
@@ -6585,7 +6420,7 @@ static void __nft_release_afinfo(struct
};
list_for_each_entry_safe(table, nt, &net->nft.tables, list) {
- ctx.family = table->afi->family;
+ ctx.family = table->family;
list_for_each_entry(chain, &table->chains, list)
nf_tables_unregister_hook(net, table, chain);
@@ -6637,7 +6472,7 @@ static int __net_init nf_tables_init_net
static void __net_exit nf_tables_exit_net(struct net *net)
{
- __nft_release_afinfo(net);
+ __nft_release_tables(net);
WARN_ON_ONCE(!list_empty(&net->nft.tables));
WARN_ON_ONCE(!list_empty(&net->nft.commit_list));
}
--- a/net/netfilter/nf_tables_inet.c
+++ b/net/netfilter/nf_tables_inet.c
@@ -38,11 +38,6 @@ static unsigned int nft_do_chain_inet(vo
return nft_do_chain(&pkt, priv);
}
-static struct nft_af_info nft_af_inet __read_mostly = {
- .family = NFPROTO_INET,
- .owner = THIS_MODULE,
-};
-
static const struct nf_chain_type filter_inet = {
.name = "filter",
.type = NFT_CHAIN_T_DEFAULT,
@@ -64,26 +59,12 @@ static const struct nf_chain_type filter
static int __init nf_tables_inet_init(void)
{
- int ret;
-
- if (nft_register_afinfo(&nft_af_inet) < 0)
- return ret;
-
- ret = nft_register_chain_type(&filter_inet);
- if (ret < 0)
- goto err_register_chain;
-
- return ret;
-
-err_register_chain:
- nft_unregister_afinfo(&nft_af_inet);
- return ret;
+ return nft_register_chain_type(&filter_inet);
}
static void __exit nf_tables_inet_exit(void)
{
nft_unregister_chain_type(&filter_inet);
- nft_unregister_afinfo(&nft_af_inet);
}
module_init(nf_tables_inet_init);
@@ -91,4 +72,4 @@ module_exit(nf_tables_inet_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
-MODULE_ALIAS_NFT_FAMILY(1);
+MODULE_ALIAS_NFT_CHAIN(1, "filter");
--- a/net/netfilter/nf_tables_netdev.c
+++ b/net/netfilter/nf_tables_netdev.c
@@ -38,11 +38,6 @@ nft_do_chain_netdev(void *priv, struct s
return nft_do_chain(&pkt, priv);
}
-static struct nft_af_info nft_af_netdev __read_mostly = {
- .family = NFPROTO_NETDEV,
- .owner = THIS_MODULE,
-};
-
static const struct nf_chain_type nft_filter_chain_netdev = {
.name = "filter",
.type = NFT_CHAIN_T_DEFAULT,
@@ -91,10 +86,10 @@ static int nf_tables_netdev_event(struct
nfnl_lock(NFNL_SUBSYS_NFTABLES);
list_for_each_entry(table, &ctx.net->nft.tables, list) {
- if (table->afi->family != NFPROTO_NETDEV)
+ if (table->family != NFPROTO_NETDEV)
continue;
- ctx.family = table->afi->family;
+ ctx.family = table->family;
ctx.table = table;
list_for_each_entry_safe(chain, nr, &table->chains, list) {
if (!nft_is_base_chain(chain))
@@ -117,12 +112,9 @@ static int __init nf_tables_netdev_init(
{
int ret;
- if (nft_register_afinfo(&nft_af_netdev) < 0)
- return ret;
-
ret = nft_register_chain_type(&nft_filter_chain_netdev);
if (ret)
- goto err_register_chain_type;
+ return ret;
ret = register_netdevice_notifier(&nf_tables_netdev_notifier);
if (ret)
@@ -132,8 +124,6 @@ static int __init nf_tables_netdev_init(
err_register_netdevice_notifier:
nft_unregister_chain_type(&nft_filter_chain_netdev);
-err_register_chain_type:
- nft_unregister_afinfo(&nft_af_netdev);
return ret;
}
@@ -142,7 +132,6 @@ static void __exit nf_tables_netdev_exit
{
unregister_netdevice_notifier(&nf_tables_netdev_notifier);
nft_unregister_chain_type(&nft_filter_chain_netdev);
- nft_unregister_afinfo(&nft_af_netdev);
}
module_init(nf_tables_netdev_init);
@@ -150,4 +139,4 @@ module_exit(nf_tables_netdev_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
-MODULE_ALIAS_NFT_FAMILY(5); /* NFPROTO_NETDEV */
+MODULE_ALIAS_NFT_CHAIN(5, "filter"); /* NFPROTO_NETDEV */
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