111 lines
3.2 KiB
C
111 lines
3.2 KiB
C
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/*
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* Copyright (c) 2014 Apple Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#ifndef __PACKET_MANGLER_H__
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#define __PACKET_MANGLER_H__
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <netinet/in.h>
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#include <stdint.h>
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#ifdef BSD_KERNEL_PRIVATE
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#include <sys/mbuf.h>
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#include <sys/socketvar.h>
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#endif /* BSD_KERNEL_PRIVATE */
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__BEGIN_DECLS
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#ifdef PRIVATE
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typedef enum {
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INOUT,
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IN,
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OUT
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} Pkt_Mnglr_Flow;
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/*
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* Kernel control name for an instance of a packet mangler.
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* Use CTLIOCGINFO to find out the corresponding kernel control id
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* to be set in the sc_id field of sockaddr_ctl for connect(2)
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* Note: the sc_unit is ephemeral
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*/
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#define PACKET_MANGLER_CONTROL_NAME "com.apple.packet-mangler"
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#define PKT_MNGLR_OPT_PROTO_ACT_MASK 1
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#define PKT_MNGLR_OPT_IP_ACT_MASK 2
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#define PKT_MNGLR_OPT_LOCAL_IP 3
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#define PKT_MNGLR_OPT_REMOTE_IP 4
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#define PKT_MNGLR_OPT_LOCAL_PORT 5
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#define PKT_MNGLR_OPT_REMOTE_PORT 6
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#define PKT_MNGLR_OPT_DIRECTION 7
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#define PKT_MNGLR_OPT_PROTOCOL 8
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#define PKT_MNGLR_OPT_ACTIVATE 0xFFFFFFFF
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/* Packet mangler action masks */
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/* Packet Mangler TCP action mask */
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#define PKT_MNGLR_TCP_ACT_NOP_MPTCP 0x00000001
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#define PKT_MNGLR_TCP_ACT_SWAP_L_PORT 0x00000002
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#define PKT_MNGLR_TCP_ACT_SWAP_R_PORT 0x00000004
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#define PKT_MNGLR_TCP_ACT_DSS_DROP 0x00000008
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#define PKT_MNGLR_TCP_ACT_CHK_EXTENDED 0x80000000
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/* Packet Mangler IP action mask */
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#define PKT_MNGLR_IP_ACT_FLT_L_IP 0x00000001
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#define PKT_MNGLR_IP_ACT_FLT_R_IP 0x00000002
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#define PKT_MNGLR_IP_ACT_SWAP_L_IP 0x00000004
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#define PKT_MNGLR_IP_ACT_SWAP_R_IP 0x00000008
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#define PKT_MNGLR_IP_ACT_DROP_PACKET 0x00000010
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#define PKT_MNGLR_IP_ACT_CHK_EXTENDED 0x80000000
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/*
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* How many filter may be active simultaneously
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*/
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#define PKT_MNGLR_MAX_FILTER_COUNT 1
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#define PKT_MNGLR_VERSION_CURRENT 1
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#endif /* PRIVATE */
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#ifdef BSD_KERNEL_PRIVATE
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extern int pkt_mnglr_log_level;
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#define PKT_MNGLR_LOG(level, fmt, ...) \
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do { \
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if (pkt_mnglr_log_level >= level) \
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printf("%s:%d " fmt "\n",\
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__FUNCTION__, __LINE__, ##__VA_ARGS__); \
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} while (0)
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extern void pkt_mnglr_init(void);
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__END_DECLS
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#endif /* BSD_KERNEL_PRIVATE */
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#endif /* __PACKET_MANGLER_H__ */
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