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 /* _nx_udp_socket_checksum_disable PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Yuxin Zhou, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function disables the UDP checksum logic for the specified */
45 /* socket. Note this function has no effect on UDP packets over IPv6 */
46 /* network, since the UDP packet checksum must be computed for UDP */
47 /* over IPv6 network. */
48 /* */
49 /* INPUT */
50 /* */
51 /* socket_ptr Pointer to UDP socket */
52 /* */
53 /* OUTPUT */
54 /* */
55 /* status Completion status */
56 /* */
57 /* CALLS */
58 /* */
59 /* None */
60 /* */
61 /* CALLED BY */
62 /* */
63 /* Application Code */
64 /* */
65 /* RELEASE HISTORY */
66 /* */
67 /* DATE NAME DESCRIPTION */
68 /* */
69 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
70 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
71 /* resulting in version 6.1 */
72 /* */
73 /**************************************************************************/
_nx_udp_socket_checksum_disable(NX_UDP_SOCKET * socket_ptr)74 UINT _nx_udp_socket_checksum_disable(NX_UDP_SOCKET *socket_ptr)
75 {
76 TX_INTERRUPT_SAVE_AREA
77
78
79 /* If trace is enabled, insert this event into the trace buffer. */
80 NX_TRACE_IN_LINE_INSERT(NX_TRACE_UDP_SOCKET_CHECKSUM_DISABLE, socket_ptr -> nx_udp_socket_ip_ptr, socket_ptr, 0, 0, NX_TRACE_UDP_EVENTS, 0, 0);
81
82 /* Lockout interrupts. */
83 TX_DISABLE
84
85 /* Determine if the socket is currently bound. */
86 if (!socket_ptr -> nx_udp_socket_bound_next)
87 {
88
89 /* Restore interrupts. */
90 TX_RESTORE
91
92 /* Socket is not bound, return an error message. */
93 return(NX_NOT_BOUND);
94 }
95
96 /* Set the checksum disable flag. */
97 socket_ptr -> nx_udp_socket_disable_checksum = NX_TRUE;
98
99 /* Restore interrupts. */
100 TX_RESTORE
101
102 /* Return a successful status. */
103 return(NX_SUCCESS);
104 }
105
106
