net: add netfilter compatible definitions for iptables
In order to support the compilation of third-party library, we encounter some situations where the macro is not defined, refer to the common implementation of other systems and add relevant definitions. Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu
Alan Carvalho de Assis
parent
9856eae61f
commit
6efeec77e1
248
include/nuttx/net/netfilter/ip6_tables.h
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248
include/nuttx/net/netfilter/ip6_tables.h
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@ -0,0 +1,248 @@
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/****************************************************************************
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* include/nuttx/net/netfilter/ip6_tables.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_NET_NETFILTER_IP6_TABLES_H
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#define __INCLUDE_NUTTX_NET_NETFILTER_IP6_TABLES_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <net/if.h>
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#include <netinet/in.h>
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#include <nuttx/net/netfilter/netfilter.h>
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#include <nuttx/net/netfilter/x_tables.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define IP6T_BASE_CTL 64
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#define IP6T_SO_SET_REPLACE (IP6T_BASE_CTL)
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#define IP6T_SO_SET_ADD_COUNTERS (IP6T_BASE_CTL + 1)
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#define IP6T_SO_SET_MAX IP6T_SO_SET_ADD_COUNTERS
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#define IP6T_SO_GET_INFO (IP6T_BASE_CTL)
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#define IP6T_SO_GET_ENTRIES (IP6T_BASE_CTL + 1)
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#define IP6T_SO_GET_REVISION_MATCH (IP6T_BASE_CTL + 4)
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#define IP6T_SO_GET_REVISION_TARGET (IP6T_BASE_CTL + 5)
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#define IP6T_SO_GET_MAX IP6T_SO_GET_REVISION_TARGET
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/* Values for "inv" field in struct ip6t_ip6. */
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#define IP6T_INV_VIA_IN 0x01 /* Invert the sense of IN IFACE. */
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#define IP6T_INV_VIA_OUT 0x02 /* Invert the sense of OUT IFACE */
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#define IP6T_INV_TOS 0x04 /* Invert the sense of TOS. */
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#define IP6T_INV_SRCIP 0x08 /* Invert the sense of SRC IP. */
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#define IP6T_INV_DSTIP 0x10 /* Invert the sense of DST OP. */
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#define IP6T_INV_FRAG 0x20 /* Invert the sense of FRAG. */
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#define IP6T_INV_PROTO XT_INV_PROTO
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#define IP6T_INV_MASK 0x7F /* All possible flag bits mask. */
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#define IP6T_STANDARD_TARGET XT_STANDARD_TARGET
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#define IP6T_ERROR_TARGET XT_ERROR_TARGET
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#define ip6t_entry_target xt_entry_target
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#define ip6t_entry_match xt_entry_match
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct ip6t_ip6
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{
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/* Source and destination IP6 addr */
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struct in6_addr src;
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struct in6_addr dst;
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/* Mask for src and dest IP6 addr */
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struct in6_addr smsk;
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struct in6_addr dmsk;
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char iniface[IFNAMSIZ];
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char outiface[IFNAMSIZ];
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unsigned char iniface_mask[IFNAMSIZ];
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unsigned char outiface_mask[IFNAMSIZ];
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/* Upper protocol number
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* - The allowed value is 0 (any) or protocol number of last parsable
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* header, which is 50 (ESP), 59 (No Next Header), 135 (MH), or
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* the non IPv6 extension headers.
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* - The protocol numbers of IPv6 extension headers except of ESP and
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* MH do not match any packets.
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* - You also need to set IP6T_FLAGS_PROTO to "flags" to check protocol.
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*/
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uint16_t proto;
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/* TOS to match if flags & IP6T_F_TOS */
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uint8_t tos;
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/* Flags word */
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uint8_t flags;
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/* Inverse flags */
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uint8_t invflags;
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};
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/* This structure defines each of the firewall rules. Consists of 3
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* parts which are 1) general IP header stuff 2) match specific
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* stuff 3) the target to perform if the rule matches
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*/
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struct ip6t_entry
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{
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struct ip6t_ip6 ipv6;
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/* Mark with fields that we care about. */
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unsigned int nfcache;
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/* Size of ipt_entry + matches */
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uint16_t target_offset;
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/* Size of ipt_entry + matches + target */
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uint16_t next_offset;
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/* Back pointer */
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unsigned int comefrom;
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/* Packet and byte counters. */
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struct xt_counters counters;
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/* The matches (if any), then the target. */
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unsigned char elems[1];
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};
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/* The argument to IP6T_SO_GET_INFO */
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struct ip6t_getinfo
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{
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/* Which table: caller fills this in. */
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char name[XT_TABLE_MAXNAMELEN];
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/* Kernel fills these in. */
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/* Which hook entry points are valid: bitmask */
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unsigned int valid_hooks;
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/* Hook entry points: one per netfilter hook. */
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unsigned int hook_entry[NF_INET_NUMHOOKS];
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/* Underflow points. */
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unsigned int underflow[NF_INET_NUMHOOKS];
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/* Number of entries */
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unsigned int num_entries;
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/* Size of entries. */
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unsigned int size;
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};
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/* The argument to IP6T_SO_GET_ENTRIES. */
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struct ip6t_get_entries
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{
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/* Which table: user fills this in. */
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char name[XT_TABLE_MAXNAMELEN];
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/* User fills this in: total entry size. */
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unsigned int size;
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/* The entries. */
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struct ip6t_entry entrytable[1];
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};
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/* The argument to IP6T_SO_SET_REPLACE. */
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struct ip6t_replace
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{
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/* Which table. */
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char name[XT_TABLE_MAXNAMELEN];
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/* Which hook entry points are valid: bitmask. You can't change this. */
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unsigned int valid_hooks;
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/* Number of entries */
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unsigned int num_entries;
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/* Total size of new entries */
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unsigned int size;
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/* Hook entry points. */
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unsigned int hook_entry[NF_INET_NUMHOOKS];
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/* Underflow points. */
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unsigned int underflow[NF_INET_NUMHOOKS];
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/* Information about old entries: */
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/* Number of counters (must be equal to current number of entries). */
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unsigned int num_counters;
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/* The old entries' counters. */
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FAR struct xt_counters *counters;
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/* The entries (hang off end: not really an array). */
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struct ip6t_entry entries[1];
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};
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/****************************************************************************
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* Inline functions
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****************************************************************************/
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/* Helper functions */
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static inline FAR struct xt_entry_target *
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ip6t_get_target(FAR struct ip6t_entry *e)
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{
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return (FAR void *)e + e->target_offset;
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}
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#endif /* __INCLUDE_NUTTX_NET_NETFILTER_IP6_TABLES_H */
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@ -47,6 +47,36 @@
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#define IPT_SO_GET_REVISION_TARGET (IPT_BASE_CTL + 3)
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#define IPT_SO_GET_MAX IPT_SO_GET_REVISION_TARGET
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/* Values for "flag" field in struct ip6t_ip6 (general ip6 structure). */
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#define IP6T_F_PROTO 0x01 /* Set if rule cares about upper protocols */
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#define IP6T_F_TOS 0x02 /* Match the TOS. */
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#define IP6T_F_GOTO 0x04 /* Set if jump is a goto */
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#define IP6T_F_MASK 0x07 /* All possible flag bits mask. */
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/* Values for "inv" field in struct ipt_ip. */
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#define IPT_INV_VIA_IN 0x01 /* Invert the sense of IN IFACE. */
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#define IPT_INV_VIA_OUT 0x02 /* Invert the sense of OUT IFACE */
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#define IPT_INV_TOS 0x04 /* Invert the sense of TOS. */
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#define IPT_INV_SRCIP 0x08 /* Invert the sense of SRC IP. */
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#define IPT_INV_DSTIP 0x10 /* Invert the sense of DST OP. */
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#define IPT_INV_FRAG 0x20 /* Invert the sense of FRAG. */
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#define IPT_INV_PROTO XT_INV_PROTO
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#define IPT_INV_MASK 0x7F /* All possible flag bits mask. */
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/* Standard return verdict, or do jump. */
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#define IPT_STANDARD_TARGET XT_STANDARD_TARGET
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/* Error verdict. */
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#define IPT_ERROR_TARGET XT_ERROR_TARGET
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#define ipt_standard_target xt_standard_target
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#define ipt_entry_target xt_entry_target
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#define ipt_entry_match xt_entry_match
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/* Foreach macro for entries. */
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#define ipt_entry_for_every(entry, head, size) \
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@ -246,4 +276,16 @@ struct ipt_get_entries
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struct ipt_entry entrytable[0];
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};
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/****************************************************************************
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* Inline functions
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****************************************************************************/
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/* Helper functions */
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static inline FAR struct xt_entry_target *
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ipt_get_target(FAR struct ipt_entry *e)
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{
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return (FAR void *)e + e->target_offset;
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}
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#endif /* __INCLUDE_NUTTX_NET_NETFILTER_IP_TABLES_H */
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@ -65,4 +65,26 @@ enum nf_inet_hooks
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NF_INET_INGRESS = NF_INET_NUMHOOKS,
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};
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enum
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{
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NFPROTO_UNSPEC = 0,
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NFPROTO_INET = 1,
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NFPROTO_IPV4 = 2,
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NFPROTO_ARP = 3,
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NFPROTO_NETDEV = 5,
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NFPROTO_BRIDGE = 7,
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NFPROTO_IPV6 = 10,
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NFPROTO_DECNET = 12,
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NFPROTO_NUMPROTO,
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};
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union nf_inet_addr
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{
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uint32_t all[4];
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uint32_t ip;
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uint32_t ip6[4];
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struct in_addr in;
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struct in6_addr in6;
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};
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#endif /* __INCLUDE_NUTTX_NET_NETFILTER_NETFILTER_H */
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@ -27,6 +27,8 @@
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#include <sys/types.h>
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#include <nuttx/net/netfilter/netfilter.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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@ -35,14 +37,38 @@
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#define XT_EXTENSION_MAXNAMELEN 29
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#define XT_TABLE_MAXNAMELEN 32
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#define XT_STANDARD_TARGET "" /* Standard return verdict, or do jump. */
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#define XT_ERROR_TARGET "ERROR"
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#define XT_MASQUERADE_TARGET "MASQUERADE"
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#define XT_INV_PROTO 0x40 /* Invert the sense of PROTO. */
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#define XT_STANDARD_TARGET "" /* Standard return verdict, or do jump. */
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#define XT_ERROR_TARGET "ERROR"
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#define XT_MASQUERADE_TARGET "MASQUERADE"
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/* For standard target */
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#define XT_RETURN (-NF_REPEAT - 1)
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#define XT_ALIGN(s) \
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(((s) + ((typeof(s))(__alignof__(struct _xt_align)) - 1)) & \
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~((typeof(s))(__alignof__(struct _xt_align)) - 1))
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* this is a dummy structure to find out the alignment requirement for a
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* struct containing all the fundamental data types that are used in
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* ipt_entry, ip6t_entry and arpt_entry. This sucks, and it is a hack.
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* It will be my personal pleasure to remove it -HW
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*/
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struct _xt_align
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{
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uint8_t u8;
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uint16_t u16;
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uint32_t u32;
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uint64_t u64;
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};
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struct xt_entry_target
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{
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union
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@ -85,4 +111,49 @@ struct xt_counters
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uint64_t bcnt;
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};
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/* The argument to IPT_SO_ADD_COUNTERS. */
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struct xt_counters_info
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{
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/* Which table. */
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char name[XT_TABLE_MAXNAMELEN];
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unsigned int num_counters;
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/* The counters (actually `number' of these). */
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struct xt_counters counters[1];
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};
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struct xt_match; /* reserved */
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struct xt_entry_match
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{
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union
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{
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struct
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{
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uint16_t match_size;
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/* Used by userspace */
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char name[XT_EXTENSION_MAXNAMELEN];
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uint8_t revision;
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} user;
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struct
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{
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uint16_t match_size;
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/* Used inside the kernel */
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FAR struct xt_match *match;
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} kernel;
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/* Total length */
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uint16_t match_size;
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} u;
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unsigned char data[1];
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};
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#endif /* __INCLUDE_NUTTX_NET_NETFILTER_X_TABLES_H */
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