1
10
13
14
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
108
109
110
...
...
...
#define NX_SOURCE_CODE
#include "nx_api.h"
#include "nx_udp.h"
#include "nx_ipv4.h"
...
...
UINT _nx_udp_source_extract(NX_PACKET *packet_ptr, ULONG *ip_address, UINT *port)
{
#ifndef NX_DISABLE_IPV4
ULONG *temp_ptr;
NX_IPV4_HEADER *ipv4_header;
temp_ptr = (ULONG *)packet_ptr -> nx_packet_prepend_ptr;
*port = (UINT)(*(temp_ptr - 2) >> NX_SHIFT_BY_16);
ipv4_header = (NX_IPV4_HEADER *)packet_ptr -> nx_packet_ip_header;
*ip_address = ipv4_header -> nx_ip_header_source_ip;
NX_TRACE_IN_LINE_INSERT(NX_TRACE_UDP_SOURCE_EXTRACT, packet_ptr, *ip_address, *port, 0, NX_TRACE_UDP_EVENTS, 0, 0);
return(NX_SUCCESS);/* ... */
#else
NX_PARAMETER_NOT_USED(packet_ptr);
NX_PARAMETER_NOT_USED(ip_address);
NX_PARAMETER_NOT_USED(port);
return(NX_NOT_SUPPORTED);/* ... */
#endif
}{ ... }