1 | /* |
2 | * Copyright (c) 2014 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. Please obtain a copy of the License at |
10 | * http://www.opensource.apple.com/apsl/ and read it before using this |
11 | * file. |
12 | * |
13 | * The Original Code and all software distributed under the License are |
14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
18 | * Please see the License for the specific language governing rights and |
19 | * limitations under the License. |
20 | * |
21 | * @APPLE_LICENSE_HEADER_END@ |
22 | */ |
23 | |
24 | #ifndef __PACKET_MANGLER_H__ |
25 | #define __PACKET_MANGLER_H__ |
26 | |
27 | #include <sys/param.h> |
28 | #include <sys/types.h> |
29 | #include <sys/socket.h> |
30 | #include <sys/syslog.h> |
31 | #include <netinet/in.h> |
32 | #include <stdint.h> |
33 | |
34 | #ifdef BSD_KERNEL_PRIVATE |
35 | #include <sys/mbuf.h> |
36 | #include <sys/socketvar.h> |
37 | #endif /* BSD_KERNEL_PRIVATE */ |
38 | |
39 | __BEGIN_DECLS |
40 | |
41 | #ifdef PRIVATE |
42 | |
43 | typedef enum { |
44 | INOUT, |
45 | IN, |
46 | OUT |
47 | } Pkt_Mnglr_Flow; |
48 | |
49 | /* |
50 | * Kernel control name for an instance of a packet mangler. |
51 | * Use CTLIOCGINFO to find out the corresponding kernel control id |
52 | * to be set in the sc_id field of sockaddr_ctl for connect(2) |
53 | * Note: the sc_unit is ephemeral |
54 | */ |
55 | #define PACKET_MANGLER_CONTROL_NAME "com.apple.packet-mangler" |
56 | |
57 | #define PKT_MNGLR_OPT_PROTO_ACT_MASK 1 |
58 | #define PKT_MNGLR_OPT_IP_ACT_MASK 2 |
59 | #define PKT_MNGLR_OPT_LOCAL_IP 3 |
60 | #define PKT_MNGLR_OPT_REMOTE_IP 4 |
61 | #define PKT_MNGLR_OPT_LOCAL_PORT 5 |
62 | #define PKT_MNGLR_OPT_REMOTE_PORT 6 |
63 | #define PKT_MNGLR_OPT_DIRECTION 7 |
64 | #define PKT_MNGLR_OPT_PROTOCOL 8 |
65 | #define PKT_MNGLR_OPT_ACTIVATE 0xFFFFFFFF |
66 | |
67 | /* Packet mangler action masks */ |
68 | /* Packet Mangler TCP action mask */ |
69 | #define PKT_MNGLR_TCP_ACT_NOP_MPTCP 0x00000001 |
70 | #define PKT_MNGLR_TCP_ACT_SWAP_L_PORT 0x00000002 |
71 | #define PKT_MNGLR_TCP_ACT_SWAP_R_PORT 0x00000004 |
72 | #define PKT_MNGLR_TCP_ACT_DSS_DROP 0x00000008 |
73 | #define PKT_MNGLR_TCP_ACT_CHK_EXTENDED 0x80000000 |
74 | |
75 | /* Packet Mangler IP action mask */ |
76 | #define PKT_MNGLR_IP_ACT_FLT_L_IP 0x00000001 |
77 | #define PKT_MNGLR_IP_ACT_FLT_R_IP 0x00000002 |
78 | #define PKT_MNGLR_IP_ACT_SWAP_L_IP 0x00000004 |
79 | #define PKT_MNGLR_IP_ACT_SWAP_R_IP 0x00000008 |
80 | #define PKT_MNGLR_IP_ACT_DROP_PACKET 0x00000010 |
81 | #define PKT_MNGLR_IP_ACT_CHK_EXTENDED 0x80000000 |
82 | |
83 | /* |
84 | * How many filter may be active simultaneously |
85 | */ |
86 | #define PKT_MNGLR_MAX_FILTER_COUNT 1 |
87 | |
88 | #define PKT_MNGLR_VERSION_CURRENT 1 |
89 | |
90 | #endif /* PRIVATE */ |
91 | |
92 | #ifdef BSD_KERNEL_PRIVATE |
93 | |
94 | extern int pkt_mnglr_log_level; |
95 | |
96 | #define PKT_MNGLR_LOG(level, fmt, ...) \ |
97 | do { \ |
98 | if (pkt_mnglr_log_level >= level) \ |
99 | printf("%s:%d " fmt "\n",\ |
100 | __FUNCTION__, __LINE__, ##__VA_ARGS__); \ |
101 | } while (0) |
102 | |
103 | |
104 | extern void pkt_mnglr_init(void); |
105 | |
106 | __END_DECLS |
107 | |
108 | #endif /* BSD_KERNEL_PRIVATE */ |
109 | |
110 | #endif /* __PACKET_MANGLER_H__ */ |
111 | |