gems-kernel/source/THIRDPARTY/xnu/bsd/net/packet_mangler.h
2024-06-03 11:29:39 -05:00

110 lines
3.2 KiB
C

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