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nf_tables: remove struct nft_af_info

PATCH New Pablo Neira Ayuso 1 participant 8 messages Jan 9, 2018

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Pablo Neira Ayuso

author maintainer
#0 lore raw

cover nf_tables: remove struct nft_af_info

This is a follow up after the RFC patchset posted in late December [1].

This patch gets rid of quite a bit of complexity by removing the family layer and it saves us 64 bytes per netns. Families are basically defining the default filter chain hooks, that can be placed in the filter chain definition instead. Then, there is already a hook validation field that is redundant these days and some fields that are very much specific of NFPROTO_NETDEV that we can also remove.

Result is less code to maintain (~500 LOC), and hence more simple infrastructure.

No functional changes after this patchset.

[1] https://marc.info/?l=netfilter-devel&m=151467563814063&w=2

Pablo Neira Ayuso (7):
netfilter: nf_tables: remove nhooks field from struct nft_af_info
netfilter: nf_tables: remove flag field from struct nft_af_info
netfilter: nf_tables: no need for struct nft_af_info to enable/disable table
netfilter: nf_tables: remove struct nft_af_info parameter in nf_tables_chain_type_lookup()
netfilter: nf_tables: add single table list for all families
netfilter: nf_tables: get rid of pernet families
netfilter: nf_tables: get rid of struct nft_af_info abstraction

 include/net/netfilter/nf_tables.h       |  37 +-
 include/net/netns/nftables.h            |   8 +-
 net/bridge/netfilter/nf_tables_bridge.c |  54 +--
 net/ipv4/netfilter/nf_tables_arp.c      |  49 +-
 net/ipv4/netfilter/nf_tables_ipv4.c     |  49 +-
 net/ipv6/netfilter/nf_tables_ipv6.c     |  49 +-
 net/netfilter/nf_tables_api.c           | 787 ++++++++++++--------------------
 net/netfilter/nf_tables_inet.c          |  49 +-
 net/netfilter/nf_tables_netdev.c        |  70 +--
 net/netfilter/nft_compat.c              |  16 +-
 net/netfilter/nft_ct.c                  |  16 +-
 net/netfilter/nft_flow_offload.c        |   4 +-
 net/netfilter/nft_log.c                 |   4 +-
 net/netfilter/nft_masq.c                |   2 +-
 net/netfilter/nft_meta.c                |   4 +-
 net/netfilter/nft_nat.c                 |   2 +-
 net/netfilter/nft_redir.c               |   2 +-
 17 files changed, 348 insertions(+), 854 deletions(-)
Signature · 1 line
2.11.0
author maintainer
#1 lore raw

PATCH 1/7 netfilter: nf_tables: remove nhooks field from struct nft_af_info

We already validate the hook through bitmask, so this check is superfluous. When removing this, this patch is also fixing a bug in the new flowtable codebase, since ctx->afi points to the table family instead of the netdev family which is where the flowtable is really hooked in.

---
 include/net/netfilter/nf_tables.h       | 2 --
 net/bridge/netfilter/nf_tables_bridge.c | 1 -
 net/ipv4/netfilter/nf_tables_arp.c      | 1 -
 net/ipv4/netfilter/nf_tables_ipv4.c     | 1 -
 net/ipv6/netfilter/nf_tables_ipv6.c     | 1 -
 net/netfilter/nf_tables_api.c           | 5 +----
 net/netfilter/nf_tables_inet.c          | 1 -
 net/netfilter/nf_tables_netdev.c        | 1 -
 8 files changed, 1 insertion(+), 12 deletions(-)
include/net/netfilter/nf_tables.h +0 -2
index dd238950df81..536aaec96a07 100644
@@ -973,7 +973,6 @@ enum nft_af_flags {
  *
  *	@list: used internally
  *	@family: address family
- *	@nhooks: number of hooks in this family
  *	@owner: module owner
  *	@tables: used internally
  *	@flags: family flags
@@ -981,7 +980,6 @@ enum nft_af_flags {
 struct nft_af_info {
 	struct list_head		list;
 	int				family;
-	unsigned int			nhooks;
 	struct module			*owner;
 	struct list_head		tables;
 	u32				flags;
net/bridge/netfilter/nf_tables_bridge.c +0 -1
index 86774b5c3b73..66c97b1e3303 100644
@@ -44,7 +44,6 @@ nft_do_chain_bridge(void *priv,
 
 static struct nft_af_info nft_af_bridge __read_mostly = {
 	.family		= NFPROTO_BRIDGE,
-	.nhooks		= NF_BR_NUMHOOKS,
 	.owner		= THIS_MODULE,
 };
 
net/ipv4/netfilter/nf_tables_arp.c +0 -1
index f84c17763f6f..f9089b2ad905 100644
@@ -29,7 +29,6 @@ nft_do_chain_arp(void *priv,
 
 static struct nft_af_info nft_af_arp __read_mostly = {
 	.family		= NFPROTO_ARP,
-	.nhooks		= NF_ARP_NUMHOOKS,
 	.owner		= THIS_MODULE,
 };
 
net/ipv4/netfilter/nf_tables_ipv4.c +0 -1
index f4675253f1e6..a98f2de63771 100644
@@ -32,7 +32,6 @@ static unsigned int nft_do_chain_ipv4(void *priv,
 
 static struct nft_af_info nft_af_ipv4 __read_mostly = {
 	.family		= NFPROTO_IPV4,
-	.nhooks		= NF_INET_NUMHOOKS,
 	.owner		= THIS_MODULE,
 };
 
net/ipv6/netfilter/nf_tables_ipv6.c +0 -1
index 9cd45b964123..bddd39dc1cf3 100644
@@ -30,7 +30,6 @@ static unsigned int nft_do_chain_ipv6(void *priv,
 
 static struct nft_af_info nft_af_ipv6 __read_mostly = {
 	.family		= NFPROTO_IPV6,
-	.nhooks		= NF_INET_NUMHOOKS,
 	.owner		= THIS_MODULE,
 };
 
net/netfilter/nf_tables_api.c +1 -4
index db0933256ec9..bfe3e769f1c9 100644
@@ -1328,9 +1328,6 @@ static int nft_chain_parse_hook(struct net *net,
 		return -EINVAL;
 
 	hook->num = ntohl(nla_get_be32(ha[NFTA_HOOK_HOOKNUM]));
-	if (hook->num >= afi->nhooks)
-		return -EINVAL;
-
 	hook->priority = ntohl(nla_get_be32(ha[NFTA_HOOK_PRIORITY]));
 
 	type = chain_type[afi->family][NFT_CHAIN_T_DEFAULT];
@@ -4991,7 +4988,7 @@ static int nf_tables_flowtable_parse_hook(const struct nft_ctx *ctx,
 		return -EINVAL;
 
 	hooknum = ntohl(nla_get_be32(tb[NFTA_FLOWTABLE_HOOK_NUM]));
-	if (hooknum >= ctx->afi->nhooks)
+	if (hooknum != NF_NETDEV_INGRESS)
 		return -EINVAL;
 
 	priority = ntohl(nla_get_be32(tb[NFTA_FLOWTABLE_HOOK_PRIORITY]));
net/netfilter/nf_tables_inet.c +0 -1
index 58b9be7480bb..00b1fc9cea2e 100644
@@ -40,7 +40,6 @@ static unsigned int nft_do_chain_inet(void *priv, struct sk_buff *skb,
 
 static struct nft_af_info nft_af_inet __read_mostly = {
 	.family		= NFPROTO_INET,
-	.nhooks		= NF_INET_NUMHOOKS,
 	.owner		= THIS_MODULE,
 };
 
net/netfilter/nf_tables_netdev.c +0 -1
index 42f6f6d42a6d..3da3dc7de945 100644
@@ -40,7 +40,6 @@ nft_do_chain_netdev(void *priv, struct sk_buff *skb,
 
 static struct nft_af_info nft_af_netdev __read_mostly = {
 	.family		= NFPROTO_NETDEV,
-	.nhooks		= NF_NETDEV_NUMHOOKS,
 	.owner		= THIS_MODULE,
 	.flags		= NFT_AF_NEEDS_DEV,
 };
Signature · 1 line
2.11.0
author maintainer
#2 lore raw

PATCH 2/7 netfilter: nf_tables: remove flag field from struct nft_af_info

In reply to Pablo Neira Ayuso

Replace it by a direct check for the netdev protocol family.

---
 include/net/netfilter/nf_tables.h | 6 ------
 net/netfilter/nf_tables_api.c     | 2 +-
 net/netfilter/nf_tables_netdev.c  | 1 -
 3 files changed, 1 insertion(+), 8 deletions(-)
include/net/netfilter/nf_tables.h +0 -6
index 536aaec96a07..9a85893a5e30 100644
@@ -964,10 +964,6 @@ struct nft_table {
 	char				*name;
 };
 
-enum nft_af_flags {
-	NFT_AF_NEEDS_DEV	= (1 << 0),
-};
-
 /**
  *	struct nft_af_info - nf_tables address family info
  *
@@ -975,14 +971,12 @@ enum nft_af_flags {
  *	@family: address family
  *	@owner: module owner
  *	@tables: used internally
- *	@flags: family flags
  */
 struct nft_af_info {
 	struct list_head		list;
 	int				family;
 	struct module			*owner;
 	struct list_head		tables;
-	u32				flags;
 };
 
 int nft_register_afinfo(struct net *, struct nft_af_info *);
net/netfilter/nf_tables_api.c +1 -1
index bfe3e769f1c9..71c4af0bee9b 100644
@@ -1350,7 +1350,7 @@ static int nft_chain_parse_hook(struct net *net,
 	hook->type = type;
 
 	hook->dev = NULL;
-	if (afi->flags & NFT_AF_NEEDS_DEV) {
+	if (afi->family == NFPROTO_NETDEV) {
 		char ifname[IFNAMSIZ];
 
 		if (!ha[NFTA_HOOK_DEV]) {
net/netfilter/nf_tables_netdev.c +0 -1
index 3da3dc7de945..c7f671daa7d0 100644
@@ -41,7 +41,6 @@ nft_do_chain_netdev(void *priv, struct sk_buff *skb,
 static struct nft_af_info nft_af_netdev __read_mostly = {
 	.family		= NFPROTO_NETDEV,
 	.owner		= THIS_MODULE,
-	.flags		= NFT_AF_NEEDS_DEV,
 };
 
 static int nf_tables_netdev_init_net(struct net *net)
Signature · 1 line
2.11.0
author maintainer
#3 lore raw

PATCH 3/7 netfilter: nf_tables: no need for struct nft_af_info to enable/disable table

In reply to Pablo Neira Ayuso

nf_tables_table_enable() and nf_tables_table_disable() take a pointer to struct nft_af_info that is never used, remove it.

---
 net/netfilter/nf_tables_api.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)
net/netfilter/nf_tables_api.c +6 -15
index 71c4af0bee9b..a2d13ad0f717 100644
@@ -611,10 +611,7 @@ static int nf_tables_gettable(struct net *net, struct sock *nlsk,
 	return err;
 }
 
-static void _nf_tables_table_disable(struct net *net,
-				     const struct nft_af_info *afi,
-				     struct nft_table *table,
-				     u32 cnt)
+static void nft_table_disable(struct net *net, struct nft_table *table, u32 cnt)
 {
 	struct nft_chain *chain;
 	u32 i = 0;
@@ -632,9 +629,7 @@ static void _nf_tables_table_disable(struct net *net,
 	}
 }
 
-static int nf_tables_table_enable(struct net *net,
-				  const struct nft_af_info *afi,
-				  struct nft_table *table)
+static int nf_tables_table_enable(struct net *net, struct nft_table *table)
 {
 	struct nft_chain *chain;
 	int err, i = 0;
@@ -654,15 +649,13 @@ static int nf_tables_table_enable(struct net *net,
 	return 0;
 err:
 	if (i)
-		_nf_tables_table_disable(net, afi, table, i);
+		nft_table_disable(net, table, i);
 	return err;
 }
 
-static void nf_tables_table_disable(struct net *net,
-				    const struct nft_af_info *afi,
-				    struct nft_table *table)
+static void nf_tables_table_disable(struct net *net, struct nft_table *table)
 {
-	_nf_tables_table_disable(net, afi, table, 0);
+	nft_table_disable(net, table, 0);
 }
 
 static int nf_tables_updtable(struct nft_ctx *ctx)
@@ -691,7 +684,7 @@ static int nf_tables_updtable(struct nft_ctx *ctx)
 		nft_trans_table_enable(trans) = false;
 	} else if (!(flags & NFT_TABLE_F_DORMANT) &&
 		   ctx->table->flags & NFT_TABLE_F_DORMANT) {
-		ret = nf_tables_table_enable(ctx->net, ctx->afi, ctx->table);
+		ret = nf_tables_table_enable(ctx->net, ctx->table);
 		if (ret >= 0) {
 			ctx->table->flags &= ~NFT_TABLE_F_DORMANT;
 			nft_trans_table_enable(trans) = true;
@@ -5793,7 +5786,6 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
 			if (nft_trans_table_update(trans)) {
 				if (!nft_trans_table_enable(trans)) {
 					nf_tables_table_disable(net,
-								trans->ctx.afi,
 								trans->ctx.table);
 					trans->ctx.table->flags |= NFT_TABLE_F_DORMANT;
 				}
@@ -5955,7 +5947,6 @@ static int nf_tables_abort(struct net *net, struct sk_buff *skb)
 			if (nft_trans_table_update(trans)) {
 				if (nft_trans_table_enable(trans)) {
 					nf_tables_table_disable(net,
-								trans->ctx.afi,
 								trans->ctx.table);
 					trans->ctx.table->flags |= NFT_TABLE_F_DORMANT;
 				}
Signature · 1 line
2.11.0
author maintainer
#4 lore raw

PATCH 4/7 netfilter: nf_tables: remove struct nft_af_info parameter in nf_tables_chain_type_lookup()

In reply to Pablo Neira Ayuso

Pass family number instead, this comes in preparation for the removal of struct nft_af_info.

---
 net/netfilter/nf_tables_api.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)
net/netfilter/nf_tables_api.c +7 -9
index a2d13ad0f717..0eec4b5412de 100644
@@ -423,7 +423,7 @@ static inline u64 nf_tables_alloc_handle(struct nft_table *table)
 static const struct nf_chain_type *chain_type[NFPROTO_NUMPROTO][NFT_CHAIN_T_MAX];
 
 static const struct nf_chain_type *
-__nf_tables_chain_type_lookup(int family, const struct nlattr *nla)
+__nf_tables_chain_type_lookup(const struct nlattr *nla, u8 family)
 {
 	int i;
 
@@ -436,22 +436,20 @@ __nf_tables_chain_type_lookup(int family, const struct nlattr *nla)
 }
 
 static const struct nf_chain_type *
-nf_tables_chain_type_lookup(const struct nft_af_info *afi,
-			    const struct nlattr *nla,
-			    bool autoload)
+nf_tables_chain_type_lookup(const struct nlattr *nla, u8 family, bool autoload)
 {
 	const struct nf_chain_type *type;
 
-	type = __nf_tables_chain_type_lookup(afi->family, nla);
+	type = __nf_tables_chain_type_lookup(nla, family);
 	if (type != NULL)
 		return type;
 #ifdef CONFIG_MODULES
 	if (autoload) {
 		nfnl_unlock(NFNL_SUBSYS_NFTABLES);
-		request_module("nft-chain-%u-%.*s", afi->family,
+		request_module("nft-chain-%u-%.*s", family,
 			       nla_len(nla), (const char *)nla_data(nla));
 		nfnl_lock(NFNL_SUBSYS_NFTABLES);
-		type = __nf_tables_chain_type_lookup(afi->family, nla);
+		type = __nf_tables_chain_type_lookup(nla, family);
 		if (type != NULL)
 			return ERR_PTR(-EAGAIN);
 	}
@@ -1325,8 +1323,8 @@ static int nft_chain_parse_hook(struct net *net,
 
 	type = chain_type[afi->family][NFT_CHAIN_T_DEFAULT];
 	if (nla[NFTA_CHAIN_TYPE]) {
-		type = nf_tables_chain_type_lookup(afi, nla[NFTA_CHAIN_TYPE],
-						   create);
+		type = nf_tables_chain_type_lookup(nla[NFTA_CHAIN_TYPE],
+						   afi->family, create);
 		if (IS_ERR(type))
 			return PTR_ERR(type);
 	}
Signature · 1 line
2.11.0
author maintainer
#5 lore raw

PATCH 5/7 netfilter: nf_tables: add single table list for all families

In reply to Pablo Neira Ayuso

Place all existing user defined tables in struct net *, instead of having one list per family. This saves us from one level of indentation in netlink dump functions.

Place pointer to struct nft_af_info in struct nft_table temporarily, as we still need this to put back reference module reference counter on table removal.

This patch comes in preparation for the removal of struct nft_af_info.

---
 include/net/netfilter/nf_tables.h |   8 +-
 include/net/netns/nftables.h      |   1 +
 net/netfilter/nf_tables_api.c     | 509 ++++++++++++++++++--------------------
 net/netfilter/nf_tables_netdev.c  |  21 +-
 net/netfilter/nft_compat.c        |  16 +-
 net/netfilter/nft_ct.c            |  16 +-
 net/netfilter/nft_flow_offload.c  |   4 +-
 net/netfilter/nft_log.c           |   4 +-
 net/netfilter/nft_masq.c          |   2 +-
 net/netfilter/nft_meta.c          |   4 +-
 net/netfilter/nft_nat.c           |   2 +-
 net/netfilter/nft_redir.c         |   2 +-
 12 files changed, 286 insertions(+), 303 deletions(-)
include/net/netfilter/nf_tables.h +4 -4
index 9a85893a5e30..c55e836e6a2f 100644
@@ -143,22 +143,22 @@ static inline void nft_data_debug(const struct nft_data *data)
  *	struct nft_ctx - nf_tables rule/set context
  *
  *	@net: net namespace
- * 	@afi: address family info
  * 	@table: the table the chain is contained in
  * 	@chain: the chain the rule is contained in
  *	@nla: netlink attributes
  *	@portid: netlink portID of the original message
  *	@seq: netlink sequence number
+ *	@family: protocol family
  *	@report: notify via unicast netlink message
  */
 struct nft_ctx {
 	struct net			*net;
-	struct nft_af_info		*afi;
 	struct nft_table		*table;
 	struct nft_chain		*chain;
 	const struct nlattr * const 	*nla;
 	u32				portid;
 	u32				seq;
+	u8				family;
 	bool				report;
 };
 
@@ -949,6 +949,7 @@ unsigned int nft_do_chain(struct nft_pktinfo *pkt, void *priv);
  *	@use: number of chain references to this table
  *	@flags: table flag (see enum nft_table_flags)
  *	@genmask: generation mask
+ *	@afinfo: address family info
  *	@name: name of the table
  */
 struct nft_table {
@@ -961,6 +962,7 @@ struct nft_table {
 	u32				use;
 	u16				flags:14,
 					genmask:2;
+	struct nft_af_info		*afi;
 	char				*name;
 };
 
@@ -970,13 +972,11 @@ struct nft_table {
  *	@list: used internally
  *	@family: address family
  *	@owner: module owner
- *	@tables: used internally
  */
 struct nft_af_info {
 	struct list_head		list;
 	int				family;
 	struct module			*owner;
-	struct list_head		tables;
 };
 
 int nft_register_afinfo(struct net *, struct nft_af_info *);
include/net/netns/nftables.h +1 -0
index 4109b5f3010f..7f86a63ac21f 100644
@@ -8,6 +8,7 @@ struct nft_af_info;
 
 struct netns_nftables {
 	struct list_head	af_info;
+	struct list_head	tables;
 	struct list_head	commit_list;
 	struct nft_af_info	*ipv4;
 	struct nft_af_info	*ipv6;
net/netfilter/nf_tables_api.c +247 -262

1,017 lines not on this page · raw message

net/netfilter/nf_tables_netdev.c +9 -12
index c7f671daa7d0..01b61a67a2ac 100644
@@ -107,7 +107,6 @@ static int nf_tables_netdev_event(struct notifier_block *this,
 				  unsigned long event, void *ptr)
 {
 	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
-	struct nft_af_info *afi;
 	struct nft_table *table;
 	struct nft_chain *chain, *nr;
 	struct nft_ctx ctx = {
@@ -119,20 +118,18 @@ static int nf_tables_netdev_event(struct notifier_block *this,
 		return NOTIFY_DONE;
 
 	nfnl_lock(NFNL_SUBSYS_NFTABLES);
-	list_for_each_entry(afi, &dev_net(dev)->nft.af_info, list) {
-		ctx.afi = afi;
-		if (afi->family != NFPROTO_NETDEV)
+	list_for_each_entry(table, &ctx.net->nft.tables, list) {
+		if (table->afi->family != NFPROTO_NETDEV)
 			continue;
 
-		list_for_each_entry(table, &afi->tables, list) {
-			ctx.table = table;
-			list_for_each_entry_safe(chain, nr, &table->chains, list) {
-				if (!nft_is_base_chain(chain))
-					continue;
+		ctx.family = table->afi->family;
+		ctx.table = table;
+		list_for_each_entry_safe(chain, nr, &table->chains, list) {
+			if (!nft_is_base_chain(chain))
+				continue;
 
-				ctx.chain = chain;
-				nft_netdev_event(event, dev, &ctx);
-			}
+			ctx.chain = chain;
+			nft_netdev_event(event, dev, &ctx);
 		}
 	}
 	nfnl_unlock(NFNL_SUBSYS_NFTABLES);
net/netfilter/nft_compat.c +8 -8
index dcff0dc8d28b..7fa17e241c14 100644
@@ -144,7 +144,7 @@ nft_target_set_tgchk_param(struct xt_tgchk_param *par,
 {
 	par->net	= ctx->net;
 	par->table	= ctx->table->name;
-	switch (ctx->afi->family) {
+	switch (ctx->family) {
 	case AF_INET:
 		entry->e4.ip.proto = proto;
 		entry->e4.ip.invflags = inv ? IPT_INV_PROTO : 0;
@@ -175,7 +175,7 @@ nft_target_set_tgchk_param(struct xt_tgchk_param *par,
 	} else {
 		par->hook_mask = 0;
 	}
-	par->family	= ctx->afi->family;
+	par->family	= ctx->family;
 	par->nft_compat = true;
 }
 
@@ -267,7 +267,7 @@ nft_target_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr)
 	par.net = ctx->net;
 	par.target = target;
 	par.targinfo = info;
-	par.family = ctx->afi->family;
+	par.family = ctx->family;
 	if (par.target->destroy != NULL)
 		par.target->destroy(&par);
 
@@ -358,7 +358,7 @@ nft_match_set_mtchk_param(struct xt_mtchk_param *par, const struct nft_ctx *ctx,
 {
 	par->net	= ctx->net;
 	par->table	= ctx->table->name;
-	switch (ctx->afi->family) {
+	switch (ctx->family) {
 	case AF_INET:
 		entry->e4.ip.proto = proto;
 		entry->e4.ip.invflags = inv ? IPT_INV_PROTO : 0;
@@ -389,7 +389,7 @@ nft_match_set_mtchk_param(struct xt_mtchk_param *par, const struct nft_ctx *ctx,
 	} else {
 		par->hook_mask = 0;
 	}
-	par->family	= ctx->afi->family;
+	par->family	= ctx->family;
 	par->nft_compat = true;
 }
 
@@ -446,7 +446,7 @@ nft_match_destroy(const struct nft_ctx *ctx, const struct nft_expr *expr)
 	par.net = ctx->net;
 	par.match = match;
 	par.matchinfo = info;
-	par.family = ctx->afi->family;
+	par.family = ctx->family;
 	if (par.match->destroy != NULL)
 		par.match->destroy(&par);
 
@@ -648,7 +648,7 @@ nft_match_select_ops(const struct nft_ctx *ctx,
 
 	mt_name = nla_data(tb[NFTA_MATCH_NAME]);
 	rev = ntohl(nla_get_be32(tb[NFTA_MATCH_REV]));
-	family = ctx->afi->family;
+	family = ctx->family;
 
 	/* Re-use the existing match if it's already loaded. */
 	list_for_each_entry(nft_match, &nft_match_list, head) {
@@ -733,7 +733,7 @@ nft_target_select_ops(const struct nft_ctx *ctx,
 
 	tg_name = nla_data(tb[NFTA_TARGET_NAME]);
 	rev = ntohl(nla_get_be32(tb[NFTA_TARGET_REV]));
-	family = ctx->afi->family;
+	family = ctx->family;
 
 	/* Re-use the existing target if it's already loaded. */
 	list_for_each_entry(nft_target, &nft_target_list, head) {
net/netfilter/nft_ct.c +8 -8
index 2647b895f4b0..6ab274b14484 100644
@@ -405,7 +405,7 @@ static int nft_ct_get_init(const struct nft_ctx *ctx,
 		if (tb[NFTA_CT_DIRECTION] == NULL)
 			return -EINVAL;
 
-		switch (ctx->afi->family) {
+		switch (ctx->family) {
 		case NFPROTO_IPV4:
 			len = FIELD_SIZEOF(struct nf_conntrack_tuple,
 					   src.u3.ip);
@@ -456,7 +456,7 @@ static int nft_ct_get_init(const struct nft_ctx *ctx,
 	if (err < 0)
 		return err;
 
-	err = nf_ct_netns_get(ctx->net, ctx->afi->family);
+	err = nf_ct_netns_get(ctx->net, ctx->family);
 	if (err < 0)
 		return err;
 
@@ -550,7 +550,7 @@ static int nft_ct_set_init(const struct nft_ctx *ctx,
 	if (err < 0)
 		goto err1;
 
-	err = nf_ct_netns_get(ctx->net, ctx->afi->family);
+	err = nf_ct_netns_get(ctx->net, ctx->family);
 	if (err < 0)
 		goto err1;
 
@@ -564,7 +564,7 @@ static int nft_ct_set_init(const struct nft_ctx *ctx,
 static void nft_ct_get_destroy(const struct nft_ctx *ctx,
 			       const struct nft_expr *expr)
 {
-	nf_ct_netns_put(ctx->net, ctx->afi->family);
+	nf_ct_netns_put(ctx->net, ctx->family);
 }
 
 static void nft_ct_set_destroy(const struct nft_ctx *ctx,
@@ -573,7 +573,7 @@ static void nft_ct_set_destroy(const struct nft_ctx *ctx,
 	struct nft_ct *priv = nft_expr_priv(expr);
 
 	__nft_ct_set_destroy(ctx, priv);
-	nf_ct_netns_put(ctx->net, ctx->afi->family);
+	nf_ct_netns_put(ctx->net, ctx->family);
 }
 
 static int nft_ct_get_dump(struct sk_buff *skb, const struct nft_expr *expr)
@@ -734,7 +734,7 @@ static int nft_ct_helper_obj_init(const struct nft_ctx *ctx,
 	struct nft_ct_helper_obj *priv = nft_obj_data(obj);
 	struct nf_conntrack_helper *help4, *help6;
 	char name[NF_CT_HELPER_NAME_LEN];
-	int family = ctx->afi->family;
+	int family = ctx->family;
 
 	if (!tb[NFTA_CT_HELPER_NAME] || !tb[NFTA_CT_HELPER_L4PROTO])
 		return -EINVAL;
@@ -753,14 +753,14 @@ static int nft_ct_helper_obj_init(const struct nft_ctx *ctx,
 
 	switch (family) {
 	case NFPROTO_IPV4:
-		if (ctx->afi->family == NFPROTO_IPV6)
+		if (ctx->family == NFPROTO_IPV6)
 			return -EINVAL;
 
 		help4 = nf_conntrack_helper_try_module_get(name, family,
 							   priv->l4proto);
 		break;
 	case NFPROTO_IPV6:
-		if (ctx->afi->family == NFPROTO_IPV4)
+		if (ctx->family == NFPROTO_IPV4)
 			return -EINVAL;
 
 		help6 = nf_conntrack_helper_try_module_get(name, family,
net/netfilter/nft_flow_offload.c +2 -2
index dd38785dfed9..4503b8dcf9c0 100644
@@ -151,7 +151,7 @@ static int nft_flow_offload_init(const struct nft_ctx *ctx,
 	priv->flowtable = flowtable;
 	flowtable->use++;
 
-	return nf_ct_netns_get(ctx->net, ctx->afi->family);
+	return nf_ct_netns_get(ctx->net, ctx->family);
 }
 
 static void nft_flow_offload_destroy(const struct nft_ctx *ctx,
@@ -160,7 +160,7 @@ static void nft_flow_offload_destroy(const struct nft_ctx *ctx,
 	struct nft_flow_offload *priv = nft_expr_priv(expr);
 
 	priv->flowtable->use--;
-	nf_ct_netns_put(ctx->net, ctx->afi->family);
+	nf_ct_netns_put(ctx->net, ctx->family);
 }
 
 static int nft_flow_offload_dump(struct sk_buff *skb, const struct nft_expr *expr)
net/netfilter/nft_log.c +2 -2
index 6f6e64423643..a27be36dc0af 100644
@@ -112,7 +112,7 @@ static int nft_log_init(const struct nft_ctx *ctx,
 		break;
 	}
 
-	err = nf_logger_find_get(ctx->afi->family, li->type);
+	err = nf_logger_find_get(ctx->family, li->type);
 	if (err < 0)
 		goto err1;
 
@@ -133,7 +133,7 @@ static void nft_log_destroy(const struct nft_ctx *ctx,
 	if (priv->prefix != nft_log_null_prefix)
 		kfree(priv->prefix);
 
-	nf_logger_put(ctx->afi->family, li->type);
+	nf_logger_put(ctx->family, li->type);
 }
 
 static int nft_log_dump(struct sk_buff *skb, const struct nft_expr *expr)
net/netfilter/nft_masq.c +1 -1
index 6ac03d4266c9..9d8655bc1bea 100644
@@ -73,7 +73,7 @@ int nft_masq_init(const struct nft_ctx *ctx,
 		}
 	}
 
-	return nf_ct_netns_get(ctx->net, ctx->afi->family);
+	return nf_ct_netns_get(ctx->net, ctx->family);
 }
 EXPORT_SYMBOL_GPL(nft_masq_init);
 
net/netfilter/nft_meta.c +2 -2
index 1a91e676f13e..8fb91940e2e7 100644
@@ -339,7 +339,7 @@ static int nft_meta_get_validate(const struct nft_ctx *ctx,
 	if (priv->key != NFT_META_SECPATH)
 		return 0;
 
-	switch (ctx->afi->family) {
+	switch (ctx->family) {
 	case NFPROTO_NETDEV:
 		hooks = 1 << NF_NETDEV_INGRESS;
 		break;
@@ -370,7 +370,7 @@ int nft_meta_set_validate(const struct nft_ctx *ctx,
 	if (priv->key != NFT_META_PKTTYPE)
 		return 0;
 
-	switch (ctx->afi->family) {
+	switch (ctx->family) {
 	case NFPROTO_BRIDGE:
 		hooks = 1 << NF_BR_PRE_ROUTING;
 		break;
net/netfilter/nft_nat.c +1 -1
index ed548d06b6dd..1f36954c2ba9 100644
@@ -142,7 +142,7 @@ static int nft_nat_init(const struct nft_ctx *ctx, const struct nft_expr *expr,
 		return -EINVAL;
 
 	family = ntohl(nla_get_be32(tb[NFTA_NAT_FAMILY]));
-	if (family != ctx->afi->family)
+	if (family != ctx->family)
 		return -EOPNOTSUPP;
 
 	switch (family) {
net/netfilter/nft_redir.c +1 -1
index 1e66538bf0ff..c64cbe78dee7 100644
@@ -75,7 +75,7 @@ int nft_redir_init(const struct nft_ctx *ctx,
 			return -EINVAL;
 	}
 
-	return nf_ct_netns_get(ctx->net, ctx->afi->family);
+	return nf_ct_netns_get(ctx->net, ctx->family);
 }
 EXPORT_SYMBOL_GPL(nft_redir_init);
 
Signature · 1 line
2.11.0
author maintainer
#6 lore raw

PATCH 6/7 netfilter: nf_tables: get rid of pernet families

In reply to Pablo Neira Ayuso

Now that we have a single table list for each netns, we can get rid of one pointer per family and the global afinfo list, thus, shrinking struct netns for nftables that now becomes 64 bytes smaller.

And call __nft_release_afinfo() from __net_exit path accordingly to release netnamespace objects on removal.

---
 include/net/netfilter/nf_tables.h       |  4 +--
 include/net/netns/nftables.h            |  7 ----
 net/bridge/netfilter/nf_tables_bridge.c | 38 +++-------------------
 net/ipv4/netfilter/nf_tables_arp.c      | 41 ++++++------------------
 net/ipv4/netfilter/nf_tables_ipv4.c     | 40 +++++------------------
 net/ipv6/netfilter/nf_tables_ipv6.c     | 40 +++++------------------
 net/netfilter/nf_tables_api.c           | 57 +++++++++++++++------------------
 net/netfilter/nf_tables_inet.c          | 41 +++++-------------------
 net/netfilter/nf_tables_netdev.c        | 46 ++++++--------------------
 9 files changed, 75 insertions(+), 239 deletions(-)
include/net/netfilter/nf_tables.h +2 -2
index c55e836e6a2f..12f83d223caa 100644
@@ -979,8 +979,8 @@ struct nft_af_info {
 	struct module			*owner;
 };
 
-int nft_register_afinfo(struct net *, struct nft_af_info *);
-void nft_unregister_afinfo(struct net *, struct nft_af_info *);
+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 *);
include/net/netns/nftables.h +0 -7
index 7f86a63ac21f..48134353411d 100644
@@ -7,15 +7,8 @@
 struct nft_af_info;
 
 struct netns_nftables {
-	struct list_head	af_info;
 	struct list_head	tables;
 	struct list_head	commit_list;
-	struct nft_af_info	*ipv4;
-	struct nft_af_info	*ipv6;
-	struct nft_af_info	*inet;
-	struct nft_af_info	*arp;
-	struct nft_af_info	*bridge;
-	struct nft_af_info	*netdev;
 	unsigned int		base_seq;
 	u8			gencursor;
 };
net/bridge/netfilter/nf_tables_bridge.c +5 -33
index 66c97b1e3303..dbf7195f059c 100644
@@ -47,34 +47,6 @@ static struct nft_af_info nft_af_bridge __read_mostly = {
 	.owner		= THIS_MODULE,
 };
 
-static int nf_tables_bridge_init_net(struct net *net)
-{
-	net->nft.bridge = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL);
-	if (net->nft.bridge == NULL)
-		return -ENOMEM;
-
-	memcpy(net->nft.bridge, &nft_af_bridge, sizeof(nft_af_bridge));
-
-	if (nft_register_afinfo(net, net->nft.bridge) < 0)
-		goto err;
-
-	return 0;
-err:
-	kfree(net->nft.bridge);
-	return -ENOMEM;
-}
-
-static void nf_tables_bridge_exit_net(struct net *net)
-{
-	nft_unregister_afinfo(net, net->nft.bridge);
-	kfree(net->nft.bridge);
-}
-
-static struct pernet_operations nf_tables_bridge_net_ops = {
-	.init	= nf_tables_bridge_init_net,
-	.exit	= nf_tables_bridge_exit_net,
-};
-
 static const struct nf_chain_type filter_bridge = {
 	.name		= "filter",
 	.type		= NFT_CHAIN_T_DEFAULT,
@@ -98,17 +70,17 @@ static int __init nf_tables_bridge_init(void)
 {
 	int ret;
 
-	ret = nft_register_chain_type(&filter_bridge);
+	ret = nft_register_afinfo(&nft_af_bridge);
 	if (ret < 0)
 		return ret;
 
-	ret = register_pernet_subsys(&nf_tables_bridge_net_ops);
+	ret = nft_register_chain_type(&filter_bridge);
 	if (ret < 0)
-		goto err_register_subsys;
+		goto err_register_chain;
 
 	return ret;
 
-err_register_subsys:
+err_register_chain:
 	nft_unregister_chain_type(&filter_bridge);
 
 	return ret;
@@ -116,8 +88,8 @@ static int __init nf_tables_bridge_init(void)
 
 static void __exit nf_tables_bridge_exit(void)
 {
-	unregister_pernet_subsys(&nf_tables_bridge_net_ops);
 	nft_unregister_chain_type(&filter_bridge);
+	nft_unregister_afinfo(&nft_af_bridge);
 }
 
 module_init(nf_tables_bridge_init);
net/ipv4/netfilter/nf_tables_arp.c +9 -32

64 lines not on this page · raw message

net/ipv4/netfilter/nf_tables_ipv4.c +8 -32
index a98f2de63771..e1441738acb4 100644
@@ -35,34 +35,6 @@ static struct nft_af_info nft_af_ipv4 __read_mostly = {
 	.owner		= THIS_MODULE,
 };
 
-static int nf_tables_ipv4_init_net(struct net *net)
-{
-	net->nft.ipv4 = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL);
-	if (net->nft.ipv4 == NULL)
-		return -ENOMEM;
-
-	memcpy(net->nft.ipv4, &nft_af_ipv4, sizeof(nft_af_ipv4));
-
-	if (nft_register_afinfo(net, net->nft.ipv4) < 0)
-		goto err;
-
-	return 0;
-err:
-	kfree(net->nft.ipv4);
-	return -ENOMEM;
-}
-
-static void nf_tables_ipv4_exit_net(struct net *net)
-{
-	nft_unregister_afinfo(net, net->nft.ipv4);
-	kfree(net->nft.ipv4);
-}
-
-static struct pernet_operations nf_tables_ipv4_net_ops = {
-	.init	= nf_tables_ipv4_init_net,
-	.exit	= nf_tables_ipv4_exit_net,
-};
-
 static const struct nf_chain_type filter_ipv4 = {
 	.name		= "filter",
 	.type		= NFT_CHAIN_T_DEFAULT,
@@ -86,21 +58,25 @@ static int __init nf_tables_ipv4_init(void)
 {
 	int ret;
 
-	ret = nft_register_chain_type(&filter_ipv4);
+	ret = nft_register_afinfo(&nft_af_ipv4);
 	if (ret < 0)
 		return ret;
 
-	ret = register_pernet_subsys(&nf_tables_ipv4_net_ops);
+	ret = nft_register_chain_type(&filter_ipv4);
 	if (ret < 0)
-		nft_unregister_chain_type(&filter_ipv4);
+		goto err_register_chain;
+
+	return 0;
 
+err_register_chain:
+	nft_unregister_afinfo(&nft_af_ipv4);
 	return ret;
 }
 
 static void __exit nf_tables_ipv4_exit(void)
 {
-	unregister_pernet_subsys(&nf_tables_ipv4_net_ops);
 	nft_unregister_chain_type(&filter_ipv4);
+	nft_unregister_afinfo(&nft_af_ipv4);
 }
 
 module_init(nf_tables_ipv4_init);
net/ipv6/netfilter/nf_tables_ipv6.c +8 -32
index bddd39dc1cf3..912d0e5516b0 100644
@@ -33,34 +33,6 @@ static struct nft_af_info nft_af_ipv6 __read_mostly = {
 	.owner		= THIS_MODULE,
 };
 
-static int nf_tables_ipv6_init_net(struct net *net)
-{
-	net->nft.ipv6 = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL);
-	if (net->nft.ipv6 == NULL)
-		return -ENOMEM;
-
-	memcpy(net->nft.ipv6, &nft_af_ipv6, sizeof(nft_af_ipv6));
-
-	if (nft_register_afinfo(net, net->nft.ipv6) < 0)
-		goto err;
-
-	return 0;
-err:
-	kfree(net->nft.ipv6);
-	return -ENOMEM;
-}
-
-static void nf_tables_ipv6_exit_net(struct net *net)
-{
-	nft_unregister_afinfo(net, net->nft.ipv6);
-	kfree(net->nft.ipv6);
-}
-
-static struct pernet_operations nf_tables_ipv6_net_ops = {
-	.init	= nf_tables_ipv6_init_net,
-	.exit	= nf_tables_ipv6_exit_net,
-};
-
 static const struct nf_chain_type filter_ipv6 = {
 	.name		= "filter",
 	.type		= NFT_CHAIN_T_DEFAULT,
@@ -84,20 +56,24 @@ static int __init nf_tables_ipv6_init(void)
 {
 	int ret;
 
-	ret = nft_register_chain_type(&filter_ipv6);
+	ret = nft_register_afinfo(&nft_af_ipv6);
 	if (ret < 0)
 		return ret;
 
-	ret = register_pernet_subsys(&nf_tables_ipv6_net_ops);
+	ret = nft_register_chain_type(&filter_ipv6);
 	if (ret < 0)
-		nft_unregister_chain_type(&filter_ipv6);
+		goto err_register_chain;
+
+	return 0;
 
+err_register_chain:
+	nft_unregister_afinfo(&nft_af_ipv6);
 	return ret;
 }
 
 static void __exit nf_tables_ipv6_exit(void)
 {
-	unregister_pernet_subsys(&nf_tables_ipv6_net_ops);
+	nft_unregister_afinfo(&nft_af_ipv6);
 	nft_unregister_chain_type(&filter_ipv6);
 }
 
net/netfilter/nf_tables_api.c +26 -31

126 lines not on this page · raw message

net/netfilter/nf_tables_inet.c +8 -33

63 lines not on this page · raw message

net/netfilter/nf_tables_netdev.c +9 -37

75 lines not on this page · raw message

Signature · 1 line
2.11.0
author maintainer
#7 lore raw

PATCH 7/7 netfilter: nf_tables: get rid of struct nft_af_info abstraction

In reply to Pablo Neira Ayuso

Remove the infrastructure to register/unregister nft_af_info structure, this structure stores no useful information anymore.

---
 include/net/netfilter/nf_tables.h       |  23 +--
 net/bridge/netfilter/nf_tables_bridge.c |  25 +--
 net/ipv4/netfilter/nf_tables_arp.c      |  25 +--
 net/ipv4/netfilter/nf_tables_ipv4.c     |  24 +--
 net/ipv6/netfilter/nf_tables_ipv6.c     |  24 +--
 net/netfilter/nf_tables_api.c           | 305 ++++++++------------------------
 net/netfilter/nf_tables_inet.c          |  23 +--
 net/netfilter/nf_tables_netdev.c        |  19 +-
 8 files changed, 86 insertions(+), 382 deletions(-)
include/net/netfilter/nf_tables.h +2 -21
index 12f83d223caa..4aca413367ee 100644
@@ -960,28 +960,12 @@ 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 *);
 
@@ -1146,9 +1130,6 @@ void nft_trace_init(struct nft_traceinfo *info, const struct nft_pktinfo *pkt,
 
 void nft_trace_notify(struct nft_traceinfo *info);
 
-#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)
 
net/bridge/netfilter/nf_tables_bridge.c +2 -23
index dbf7195f059c..5160cf614176 100644
@@ -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_bridge = {
 
 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 <[email protected]>");
-MODULE_ALIAS_NFT_FAMILY(AF_BRIDGE);
+MODULE_ALIAS_NFT_CHAIN(AF_BRIDGE, "filter");
net/ipv4/netfilter/nf_tables_arp.c +2 -23
index 07667388ceb5..036c074736b0 100644
@@ -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_arp = {
 
 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 <[email protected]>");
-MODULE_ALIAS_NFT_FAMILY(3); /* NFPROTO_ARP */
+MODULE_ALIAS_NFT_CHAIN(3, "filter"); /* NFPROTO_ARP */
net/ipv4/netfilter/nf_tables_ipv4.c +2 -22
index e1441738acb4..96f955496d5f 100644
@@ -30,11 +30,6 @@ static unsigned int nft_do_chain_ipv4(void *priv,
 	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_ipv4 = {
 
 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 <[email protected]>");
-MODULE_ALIAS_NFT_FAMILY(AF_INET);
+MODULE_ALIAS_NFT_CHAIN(AF_INET, "filter");
net/ipv6/netfilter/nf_tables_ipv6.c +2 -22
index 912d0e5516b0..17e03589331c 100644
@@ -28,11 +28,6 @@ static unsigned int nft_do_chain_ipv6(void *priv,
 	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_ipv6 = {
 
 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 <[email protected]>");
-MODULE_ALIAS_NFT_FAMILY(AF_INET6);
+MODULE_ALIAS_NFT_CHAIN(AF_INET6, "filter");
net/netfilter/nf_tables_api.c +70 -235

774 lines not on this page · raw message

net/netfilter/nf_tables_inet.c +2 -21
index d486ced4de84..e30c7da09d0d 100644
@@ -38,11 +38,6 @@ static unsigned int nft_do_chain_inet(void *priv, struct sk_buff *skb,
 	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_inet = {
 
 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 <[email protected]>");
-MODULE_ALIAS_NFT_FAMILY(1);
+MODULE_ALIAS_NFT_CHAIN(1, "filter");
net/netfilter/nf_tables_netdev.c +4 -15
index 404b49acb125..4041fafca934 100644
@@ -38,11 +38,6 @@ nft_do_chain_netdev(void *priv, struct sk_buff *skb,
 	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 notifier_block *this,
 
 	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(void)
 {
 	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(void)
 
 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(void)
 {
 	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 <[email protected]>");
-MODULE_ALIAS_NFT_FAMILY(5); /* NFPROTO_NETDEV */
+MODULE_ALIAS_NFT_CHAIN(5, "filter"); /* NFPROTO_NETDEV */
Signature · 1 line
2.11.0