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 /** Internet Protocol (IP) */
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_ip.h"
30
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _nx_ip_interface_mtu_set PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Yuxin Zhou, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function sets the mtu of interface. Typically this is called */
45 /* by the device driver during initialization to configure the */
46 /* interface IP MTU size. */
47 /* */
48 /* INPUT */
49 /* */
50 /* ip_ptr IP control block pointer */
51 /* interface_index Index to the interface */
52 /* mtu_size IP MTU size, in bytes */
53 /* */
54 /* OUTPUT */
55 /* */
56 /* status Completion status */
57 /* */
58 /* CALLS */
59 /* */
60 /* tx_mutex_get Get protection mutex */
61 /* tx_mutex_put Put protection mutex */
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 /**************************************************************************/
_nx_ip_interface_mtu_set(NX_IP * ip_ptr,UINT interface_index,ULONG mtu_size)76 UINT _nx_ip_interface_mtu_set(NX_IP *ip_ptr, UINT interface_index, ULONG mtu_size)
77 {
78
79 /* Get mutex protection. */
80 tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
81
82 /* Set new mtu size. */
83 ip_ptr -> nx_ip_interface[interface_index].nx_interface_ip_mtu_size = mtu_size;
84
85 /* Release mutex protection. */
86 tx_mutex_put(&(ip_ptr -> nx_ip_protection));
87
88 /* Return completion status. */
89 return(NX_SUCCESS);
90 }
91
92
