1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/* packet-mac-nr.h
*
* Martin Mathieson
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/* radioType */
#define FDD_RADIO 1
#define TDD_RADIO 2
/* Direction */
#define DIRECTION_UPLINK 0
#define DIRECTION_DOWNLINK 1
/* rntiType */
#define NO_RNTI 0
#define P_RNTI 1
#define RA_RNTI 2
#define C_RNTI 3
#define SI_RNTI 4
#define CS_RNTI 5
/* Context info attached to each NR MAC frame */
typedef struct mac_nr_info
{
/* Needed for decode */
guint8 radioType;
guint8 direction;
guint8 rntiType;
/* Extra info to display */
guint16 rnti;
guint16 ueid;
guint8 harqid;
/* Will these be included in the ME PHR report? */
guint8 phr_type2_othercell;
/* Timing info */
gboolean sfnSlotInfoPresent;
guint16 sysframeNumber;
guint16 slotNumber;
/* Length of DL PDU or UL grant size in bytes */
guint16 length;
} mac_nr_info;
/* Functions to be called from outside this module (e.g. in a plugin, where mac_nr_info
isn't available) to get/set per-packet data */
WS_DLL_PUBLIC
mac_nr_info *get_mac_nr_proto_data(packet_info *pinfo);
WS_DLL_PUBLIC
void set_mac_nr_proto_data(packet_info *pinfo, mac_nr_info *p_mac_nr_info);
/*****************************************************************/
/* UDP framing format */
/* ----------------------- */
/* Several people have asked about dissecting MAC by framing */
/* PDUs over IP. A suggested format over UDP has been created */
/* and implemented by this dissector, using the definitions */
/* below. */
/* */
/* A heuristic dissector (enabled by a preference) will */
/* recognise a signature at the beginning of these frames. */
/*****************************************************************/
/* Signature. Rather than try to define a port for this, or make the
port number a preference, frames will start with this string (with no
terminating NULL */
#define MAC_NR_START_STRING "mac-nr"
/* Fixed fields. This is followed by the following 3 mandatory fields:
- radioType (1 byte)
- direction (1 byte)
- rntiType (1 byte)
(where the allowed values are defined above */
/* Optional fields. Attaching this info to frames will allow you
to show you display/filter/plot/add-custom-columns on these fields, so should
be added if available.
The format is to have the tag, followed by the value (there is no length field,
it's implicit from the tag) */
#define MAC_NR_RNTI_TAG 0x02
/* 2 bytes, network order */
#define MAC_NR_UEID_TAG 0x03
/* 2 bytes, network order */
#define MAC_NR_FRAME_SUBFRAME_TAG 0x04
/* 2 bytes, deprecated, do not use it */
#define MAC_NR_PHR_TYPE2_OTHERCELL_TAG 0x05
/* 1 byte, TRUE/FALSE */
#define MAC_NR_HARQID 0x06
/* 1 byte */
#define MAC_NR_FRAME_SLOT_TAG 0x07
/* 4 bytes, network order, SFN is stored in the 2 first bytes and slot number in the 2 last bytes */
/* MAC PDU. Following this tag comes the actual MAC PDU (there is no length, the PDU
continues until the end of the frame) */
#define MAC_NR_PAYLOAD_TAG 0x01
/* Type to store parameters for configuring LCID->RLC channel settings for DRB */
/* Some are optional, and may not be seen (e.g. on reestablishment) */
typedef struct nr_drb_mac_rlc_mapping_t
{
gboolean active;
guint16 ueid; /* Mandatory */
guint8 drbid; /* Mandatory */
gboolean lcid_present;
guint8 lcid; /* Part of LogicalChannelConfig - optional */
gboolean rlcMode_present;
guint8 rlcMode; /* Part of RLC config - optional */
guint8 tempDirection; /* So know direction of next SN length... */
gboolean rlcUlSnLength_present;
guint8 rlcUlSnLength; /* Part of RLC config - optional */
gboolean rlcDlSnLength_present;
guint8 rlcDlSnLength; /* Part of RLC config - optional */
} nr_drb_mac_rlc_mapping_t;
/* Set details of an LCID -> drb channel mapping. To be called from
configuration protocol (i.e. RRC) */
void set_mac_nr_bearer_mapping(nr_drb_mac_rlc_mapping_t *drb_mapping);
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
|
