1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** NetX Component */
17 /** */
18 /** User Datagram Protocol (UDP) */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23 #define NX_SOURCE_CODE
24
25
26 /* Include necessary system files. */
27
28 #include "nx_api.h"
29 #include "nx_udp.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _nxd_udp_socket_source_send PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Yuxin Zhou, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function sends UDP packet using specified local interface */
45 /* IPv4 or IPv6 address as source. */
46 /* */
47 /* INPUT */
48 /* */
49 /* socket_ptr Pointer to UDP socket */
50 /* packet_ptr Pointer to UDP packet */
51 /* ip_address IP address */
52 /* port 16-bit UDP port number */
53 /* address_index Index of IPv4 or IPv6 address */
54 /* to use as the source address*/
55 /* */
56 /* OUTPUT */
57 /* */
58 /* status Completion status */
59 /* */
60 /* CALLS */
61 /* */
62 /* _nxd_udp_socket_send Send the UDP packet */
63 /* */
64 /* CALLED BY */
65 /* */
66 /* Application Code */
67 /* */
68 /* RELEASE HISTORY */
69 /* */
70 /* DATE NAME DESCRIPTION */
71 /* */
72 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
73 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
74 /* resulting in version 6.1 */
75 /* */
76 /**************************************************************************/
_nxd_udp_socket_source_send(NX_UDP_SOCKET * socket_ptr,NX_PACKET * packet_ptr,NXD_ADDRESS * ip_address,UINT port,UINT address_index)77 UINT _nxd_udp_socket_source_send(NX_UDP_SOCKET *socket_ptr, NX_PACKET *packet_ptr,
78 NXD_ADDRESS *ip_address, UINT port, UINT address_index)
79 {
80 UINT status;
81 NX_IP *ip_ptr;
82
83 /* Setup the pointer to the associated IP instance. */
84 ip_ptr = socket_ptr -> nx_udp_socket_ip_ptr;
85
86 /* Store address information into the packet structure. */
87 #ifndef NX_DISABLE_IPV4
88 if (ip_address -> nxd_ip_version == NX_IP_VERSION_V4)
89 {
90 packet_ptr -> nx_packet_address.nx_packet_interface_ptr = &(ip_ptr -> nx_ip_interface[address_index]);
91 }
92 #endif /* !NX_DISABLE_IPV4 */
93
94 #ifdef FEATURE_NX_IPV6
95 if (ip_address -> nxd_ip_version == NX_IP_VERSION_V6)
96 {
97 packet_ptr -> nx_packet_address.nx_packet_ipv6_address_ptr = &ip_ptr -> nx_ipv6_address[address_index];
98
99 if (packet_ptr -> nx_packet_address.nx_packet_ipv6_address_ptr -> nxd_ipv6_address_state != NX_IPV6_ADDR_STATE_VALID)
100 {
101 return(NX_NO_INTERFACE_ADDRESS);
102 }
103 }
104 #endif /* FEATURE_NX_IPV6 */
105
106 /* Call udp_socket_send service */
107 status = _nxd_udp_socket_send(socket_ptr, packet_ptr, ip_address, port);
108
109 return(status);
110 }
111
112
