Outline ![]()
Files ![]()
loading...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Component */
/** */
/** Address Resolution Protocol (ARP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_arp.h"
#ifndef NX_DISABLE_IPV4
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_arp_queue_process PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function processes the received ARP messages on the ARP */
/* queue placed there by nx_arp_deferred_receive. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP instance */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _nx_arp_packet_receive Process received ARP packet */
/* */
/* CALLED BY */
/* */
/* _nx_ip_thread_entry IP helper thread */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
/* 09-30-2020 Yuxin Zhou Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
VOID _nx_arp_queue_process(NX_IP *ip_ptr)
{
TX_INTERRUPT_SAVE_AREA
NX_PACKET *packet_ptr;
/* Loop to process all ARP deferred packet requests. */
while (ip_ptr -> nx_ip_arp_deferred_received_packet_head)
{
/* Remove the first packet and process it! */
/* Disable interrupts. */
TX_DISABLE
/* Pickup the first packet. */
packet_ptr = ip_ptr -> nx_ip_arp_deferred_received_packet_head;
/* Move the head pointer to the next packet. */
ip_ptr -> nx_ip_arp_deferred_received_packet_head = packet_ptr -> nx_packet_queue_next;
/* Check for end of ARP deferred processing queue. */
if (ip_ptr -> nx_ip_arp_deferred_received_packet_head == NX_NULL)
{
/* Yes, the ARP deferred queue is empty. Set the tail pointer to NULL. */
ip_ptr -> nx_ip_arp_deferred_received_packet_tail = NX_NULL;
}
/* Restore interrupts. */
TX_RESTORE
/* Call the actual ARP packet receive function. */
_nx_arp_packet_receive(ip_ptr, packet_ptr);
}
}
#endif /* !NX_DISABLE_IPV4 */