1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** NetX Component */
16 /** */
17 /** User Datagram Protocol (UDP) */
18 /** */
19 /**************************************************************************/
20 /**************************************************************************/
21
22 #define NX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "nx_api.h"
28 #include "nx_udp.h"
29
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _nxd_udp_socket_source_send PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* Yuxin Zhou, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function sends UDP packet using specified local interface */
44 /* IPv4 or IPv6 address as source. */
45 /* */
46 /* INPUT */
47 /* */
48 /* socket_ptr Pointer to UDP socket */
49 /* packet_ptr Pointer to UDP packet */
50 /* ip_address IP address */
51 /* port 16-bit UDP port number */
52 /* address_index Index of IPv4 or IPv6 address */
53 /* to use as the source address*/
54 /* */
55 /* OUTPUT */
56 /* */
57 /* status Completion status */
58 /* */
59 /* CALLS */
60 /* */
61 /* _nxd_udp_socket_send Send the UDP packet */
62 /* */
63 /* CALLED BY */
64 /* */
65 /* Application Code */
66 /* */
67 /* RELEASE HISTORY */
68 /* */
69 /* DATE NAME DESCRIPTION */
70 /* */
71 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
72 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
73 /* resulting in version 6.1 */
74 /* */
75 /**************************************************************************/
_nxd_udp_socket_source_send(NX_UDP_SOCKET * socket_ptr,NX_PACKET * packet_ptr,NXD_ADDRESS * ip_address,UINT port,UINT address_index)76 UINT _nxd_udp_socket_source_send(NX_UDP_SOCKET *socket_ptr, NX_PACKET *packet_ptr,
77 NXD_ADDRESS *ip_address, UINT port, UINT address_index)
78 {
79 UINT status;
80 NX_IP *ip_ptr;
81
82 /* Setup the pointer to the associated IP instance. */
83 ip_ptr = socket_ptr -> nx_udp_socket_ip_ptr;
84
85 /* Store address information into the packet structure. */
86 #ifndef NX_DISABLE_IPV4
87 if (ip_address -> nxd_ip_version == NX_IP_VERSION_V4)
88 {
89 packet_ptr -> nx_packet_address.nx_packet_interface_ptr = &(ip_ptr -> nx_ip_interface[address_index]);
90 }
91 #endif /* !NX_DISABLE_IPV4 */
92
93 #ifdef FEATURE_NX_IPV6
94 if (ip_address -> nxd_ip_version == NX_IP_VERSION_V6)
95 {
96 packet_ptr -> nx_packet_address.nx_packet_ipv6_address_ptr = &ip_ptr -> nx_ipv6_address[address_index];
97
98 if (packet_ptr -> nx_packet_address.nx_packet_ipv6_address_ptr -> nxd_ipv6_address_state != NX_IPV6_ADDR_STATE_VALID)
99 {
100 return(NX_NO_INTERFACE_ADDRESS);
101 }
102 }
103 #endif /* FEATURE_NX_IPV6 */
104
105 /* Call udp_socket_send service */
106 status = _nxd_udp_socket_send(socket_ptr, packet_ptr, ip_address, port);
107
108 return(status);
109 }
110
111
