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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <linux/if.h>
#include <linux/netfilter/nf_tables.h>
#include <linux/netfilter/nfnetlink.h>
#include "netlink-types-internal.h"
static const NLAPolicy nfnl_nft_table_policies[] = {
[NFTA_TABLE_NAME] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_TABLE_FLAGS] = BUILD_POLICY(U32),
};
DEFINE_POLICY_SET(nfnl_nft_table);
static const NLAPolicy nfnl_nft_chain_hook_policies[] = {
[NFTA_HOOK_HOOKNUM] = BUILD_POLICY(U32),
[NFTA_HOOK_PRIORITY] = BUILD_POLICY(U32),
[NFTA_HOOK_DEV] = BUILD_POLICY_WITH_SIZE(STRING, IFNAMSIZ - 1),
};
DEFINE_POLICY_SET(nfnl_nft_chain_hook);
static const NLAPolicy nfnl_nft_chain_policies[] = {
[NFTA_CHAIN_TABLE] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_CHAIN_NAME] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_CHAIN_HOOK] = BUILD_POLICY_NESTED(nfnl_nft_chain_hook),
[NFTA_CHAIN_TYPE] = BUILD_POLICY_WITH_SIZE(STRING, 16),
[NFTA_CHAIN_FLAGS] = BUILD_POLICY(U32),
};
DEFINE_POLICY_SET(nfnl_nft_chain);
static const NLAPolicy nfnl_nft_expr_meta_policies[] = {
[NFTA_META_DREG] = BUILD_POLICY(U32),
[NFTA_META_KEY] = BUILD_POLICY(U32),
[NFTA_META_SREG] = BUILD_POLICY(U32),
};
static const NLAPolicy nfnl_nft_expr_payload_policies[] = {
[NFTA_PAYLOAD_DREG] = BUILD_POLICY(U32),
[NFTA_PAYLOAD_BASE] = BUILD_POLICY(U32),
[NFTA_PAYLOAD_OFFSET] = BUILD_POLICY(U32),
[NFTA_PAYLOAD_LEN] = BUILD_POLICY(U32),
};
static const NLAPolicy nfnl_nft_expr_nat_policies[] = {
[NFTA_NAT_TYPE] = BUILD_POLICY(U32),
[NFTA_NAT_FAMILY] = BUILD_POLICY(U32),
[NFTA_NAT_REG_ADDR_MIN] = BUILD_POLICY(U32),
[NFTA_NAT_REG_ADDR_MAX] = BUILD_POLICY(U32),
[NFTA_NAT_REG_PROTO_MIN] = BUILD_POLICY(U32),
[NFTA_NAT_REG_PROTO_MAX] = BUILD_POLICY(U32),
[NFTA_NAT_FLAGS] = BUILD_POLICY(U32),
};
static const NLAPolicy nfnl_nft_data_policies[] = {
[NFTA_DATA_VALUE] = { .type = NETLINK_TYPE_BINARY },
};
DEFINE_POLICY_SET(nfnl_nft_data);
static const NLAPolicy nfnl_nft_expr_bitwise_policies[] = {
[NFTA_BITWISE_SREG] = BUILD_POLICY(U32),
[NFTA_BITWISE_DREG] = BUILD_POLICY(U32),
[NFTA_BITWISE_LEN] = BUILD_POLICY(U32),
[NFTA_BITWISE_MASK] = BUILD_POLICY_NESTED(nfnl_nft_data),
[NFTA_BITWISE_XOR] = BUILD_POLICY_NESTED(nfnl_nft_data),
};
static const NLAPolicy nfnl_nft_expr_cmp_policies[] = {
[NFTA_CMP_SREG] = BUILD_POLICY(U32),
[NFTA_CMP_OP] = BUILD_POLICY(U32),
[NFTA_CMP_DATA] = BUILD_POLICY_NESTED(nfnl_nft_data),
};
static const NLAPolicy nfnl_nft_expr_fib_policies[] = {
[NFTA_FIB_DREG] = BUILD_POLICY(U32),
[NFTA_FIB_RESULT] = BUILD_POLICY(U32),
[NFTA_FIB_FLAGS] = BUILD_POLICY(U32),
};
static const NLAPolicy nfnl_nft_expr_lookup_policies[] = {
[NFTA_LOOKUP_SET] = { .type = NETLINK_TYPE_STRING },
[NFTA_LOOKUP_SREG] = BUILD_POLICY(U32),
[NFTA_LOOKUP_DREG] = BUILD_POLICY(U32),
[NFTA_LOOKUP_FLAGS] = BUILD_POLICY(U32),
};
static const NLAPolicy nfnl_nft_expr_masq_policies[] = {
[NFTA_MASQ_FLAGS] = BUILD_POLICY(U32),
[NFTA_MASQ_REG_PROTO_MIN] = BUILD_POLICY(U32),
[NFTA_MASQ_REG_PROTO_MAX] = BUILD_POLICY(U32),
};
static const NLAPolicySetUnionElement nfnl_expr_data_policy_set_union_elements[] = {
BUILD_UNION_ELEMENT_BY_STRING("bitwise", nfnl_nft_expr_bitwise),
BUILD_UNION_ELEMENT_BY_STRING("cmp", nfnl_nft_expr_cmp),
BUILD_UNION_ELEMENT_BY_STRING("fib", nfnl_nft_expr_fib),
BUILD_UNION_ELEMENT_BY_STRING("lookup", nfnl_nft_expr_lookup),
BUILD_UNION_ELEMENT_BY_STRING("masq", nfnl_nft_expr_masq),
BUILD_UNION_ELEMENT_BY_STRING("meta", nfnl_nft_expr_meta),
BUILD_UNION_ELEMENT_BY_STRING("nat", nfnl_nft_expr_nat),
BUILD_UNION_ELEMENT_BY_STRING("payload", nfnl_nft_expr_payload),
};
DEFINE_POLICY_SET_UNION(nfnl_expr_data, NFTA_EXPR_NAME);
static const NLAPolicy nfnl_nft_rule_expr_policies[] = {
[NFTA_EXPR_NAME] = BUILD_POLICY_WITH_SIZE(STRING, 16),
[NFTA_EXPR_DATA] = BUILD_POLICY_NESTED_UNION_BY_STRING(nfnl_expr_data),
};
DEFINE_POLICY_SET(nfnl_nft_rule_expr);
static const NLAPolicy nfnl_nft_rule_policies[] = {
[NFTA_RULE_TABLE] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_RULE_CHAIN] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_RULE_EXPRESSIONS] = BUILD_POLICY_NESTED(nfnl_nft_rule_expr),
};
DEFINE_POLICY_SET(nfnl_nft_rule);
static const NLAPolicy nfnl_nft_set_policies[] = {
[NFTA_SET_TABLE] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_SET_NAME] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_SET_FLAGS] = BUILD_POLICY(U32),
[NFTA_SET_KEY_TYPE] = BUILD_POLICY(U32),
[NFTA_SET_KEY_LEN] = BUILD_POLICY(U32),
[NFTA_SET_DATA_TYPE] = BUILD_POLICY(U32),
[NFTA_SET_DATA_LEN] = BUILD_POLICY(U32),
[NFTA_SET_POLICY] = BUILD_POLICY(U32),
[NFTA_SET_ID] = BUILD_POLICY(U32),
};
DEFINE_POLICY_SET(nfnl_nft_set);
static const NLAPolicy nfnl_nft_setelem_policies[] = {
[NFTA_SET_ELEM_KEY] = BUILD_POLICY_NESTED(nfnl_nft_data),
[NFTA_SET_ELEM_DATA] = BUILD_POLICY_NESTED(nfnl_nft_data),
[NFTA_SET_ELEM_FLAGS] = BUILD_POLICY(U32),
};
DEFINE_POLICY_SET(nfnl_nft_setelem);
static const NLAPolicy nfnl_nft_setelem_list_policies[] = {
[NFTA_SET_ELEM_LIST_TABLE] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_SET_ELEM_LIST_SET] = BUILD_POLICY_WITH_SIZE(STRING, NFT_TABLE_MAXNAMELEN - 1),
[NFTA_SET_ELEM_LIST_ELEMENTS] = BUILD_POLICY_NESTED(nfnl_nft_setelem),
};
DEFINE_POLICY_SET(nfnl_nft_setelem_list);
static const NLAPolicy nfnl_subsys_nft_policies[] = {
[NFT_MSG_DELTABLE] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_nft_table, sizeof(struct nfgenmsg)),
[NFT_MSG_NEWTABLE] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_nft_table, sizeof(struct nfgenmsg)),
[NFT_MSG_NEWCHAIN] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_nft_chain, sizeof(struct nfgenmsg)),
[NFT_MSG_NEWRULE] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_nft_rule, sizeof(struct nfgenmsg)),
[NFT_MSG_NEWSET] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_nft_set, sizeof(struct nfgenmsg)),
[NFT_MSG_NEWSETELEM] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_nft_setelem_list, sizeof(struct nfgenmsg)),
[NFT_MSG_DELSETELEM] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_nft_setelem_list, sizeof(struct nfgenmsg)),
};
DEFINE_POLICY_SET(nfnl_subsys_nft);
static const NLAPolicy nfnl_msg_batch_policies[] = {
[NFNL_BATCH_GENID] = BUILD_POLICY(U32)
};
DEFINE_POLICY_SET(nfnl_msg_batch);
static const NLAPolicy nfnl_subsys_none_policies[] = {
[NFNL_MSG_BATCH_BEGIN] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_msg_batch, sizeof(struct nfgenmsg)),
[NFNL_MSG_BATCH_END] = BUILD_POLICY_NESTED_WITH_SIZE(nfnl_msg_batch, sizeof(struct nfgenmsg)),
};
DEFINE_POLICY_SET(nfnl_subsys_none);
static const NLAPolicy nfnl_policies[] = {
[NFNL_SUBSYS_NONE] = BUILD_POLICY_NESTED(nfnl_subsys_none),
[NFNL_SUBSYS_NFTABLES] = BUILD_POLICY_NESTED(nfnl_subsys_nft),
};
DEFINE_POLICY_SET(nfnl);
const NLAPolicy *nfnl_get_policy(uint16_t nlmsg_type) {
const NLAPolicySet *subsys;
subsys = policy_set_get_policy_set(&nfnl_policy_set, NFNL_SUBSYS_ID(nlmsg_type));
if (!subsys)
return NULL;
return policy_set_get_policy(subsys, NFNL_MSG_TYPE(nlmsg_type));
}
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