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 /**************************************************************************/
19 /**************************************************************************/
20
21 #define NX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "nx_api.h"
27 #include "nx_ip.h"
28
29
30 /**************************************************************************/
31 /* */
32 /* FUNCTION RELEASE */
33 /* */
34 /* _nx_ip_driver_link_status_event PORTABLE C */
35 /* 6.1 */
36 /* AUTHOR */
37 /* */
38 /* Yuxin Zhou, Microsoft Corporation */
39 /* */
40 /* DESCRIPTION */
41 /* */
42 /* This function deferrs link status event from ISR to the IP helper */
43 /* thread. */
44 /* */
45 /* INPUT */
46 /* */
47 /* ip_ptr Pointer to IP control block */
48 /* interface_index Index of interface */
49 /* */
50 /* OUTPUT */
51 /* */
52 /* None */
53 /* */
54 /* CALLS */
55 /* */
56 /* tx_event_flags_set Wakeup IP helper thread */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* Application I/O Driver */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
67 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
68 /* resulting in version 6.1 */
69 /* */
70 /**************************************************************************/
_nx_ip_driver_link_status_event(NX_IP * ip_ptr,UINT interface_index)71 VOID _nx_ip_driver_link_status_event(NX_IP *ip_ptr, UINT interface_index)
72 {
73 TX_INTERRUPT_SAVE_AREA
74
75 /* Disable interrupts. */
76 TX_DISABLE
77
78 /* Mark link status changed. */
79 ip_ptr -> nx_ip_interface[interface_index].nx_interface_link_status_change = NX_TRUE;
80
81 /* Wakeup IP helper thread to process the link status event. */
82 tx_event_flags_set(&(ip_ptr -> nx_ip_events), NX_IP_LINK_STATUS_EVENT, TX_OR);
83
84 /* Restore interrupts. */
85 TX_RESTORE
86 }
87
88
