1 /***************************************************************************
2  * Copyright (c) 2024 Microsoft Corporation
3  *
4  * This program and the accompanying materials are made available under the
5  * terms of the MIT License which is available at
6  * https://opensource.org/licenses/MIT.
7  *
8  * SPDX-License-Identifier: MIT
9  **************************************************************************/
10 
11 
12 /**************************************************************************/
13 /**************************************************************************/
14 /**                                                                       */
15 /** NetX Component                                                        */
16 /**                                                                       */
17 /**   Address Resolution Protocol (ARP)                                   */
18 /**                                                                       */
19 /**************************************************************************/
20 /**************************************************************************/
21 
22 #define NX_SOURCE_CODE
23 
24 
25 /* Include necessary system files.  */
26 
27 #include "nx_api.h"
28 #include "nx_ip.h"
29 #include "nx_arp.h"
30 
31 
32 /* Bring in externs for caller checking code.  */
33 
34 NX_CALLER_CHECKING_EXTERNS
35 
36 
37 /**************************************************************************/
38 /*                                                                        */
39 /*  FUNCTION                                               RELEASE        */
40 /*                                                                        */
41 /*    _nxe_arp_dynamic_entries_invalidate                 PORTABLE C      */
42 /*                                                           6.1          */
43 /*  AUTHOR                                                                */
44 /*                                                                        */
45 /*    Yuxin Zhou, Microsoft Corporation                                   */
46 /*                                                                        */
47 /*  DESCRIPTION                                                           */
48 /*                                                                        */
49 /*    This function checks for errors in the ARP dynamic entries          */
50 /*    invalidate function call.                                           */
51 /*                                                                        */
52 /*  INPUT                                                                 */
53 /*                                                                        */
54 /*    ip_ptr                                IP instance pointer           */
55 /*                                                                        */
56 /*  OUTPUT                                                                */
57 /*                                                                        */
58 /*    status                                Completion status             */
59 /*                                                                        */
60 /*  CALLS                                                                 */
61 /*                                                                        */
62 /*    _nx_arp_dynamic_entries_invalidate    Invalidate dynamic ARP entries*/
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 /**************************************************************************/
_nxe_arp_dynamic_entries_invalidate(NX_IP * ip_ptr)77 UINT  _nxe_arp_dynamic_entries_invalidate(NX_IP *ip_ptr)
78 {
79 
80 #ifndef NX_DISABLE_IPV4
81 UINT status;
82 
83 
84     /* Check for invalid input pointers.  */
85     if ((ip_ptr == NX_NULL) || (ip_ptr -> nx_ip_id != NX_IP_ID))
86     {
87         return(NX_PTR_ERROR);
88     }
89 
90     /* Check to see if ARP is enabled.  */
91     if (!ip_ptr -> nx_ip_arp_allocate)
92     {
93         return(NX_NOT_ENABLED);
94     }
95 
96     /* Check for appropriate caller.  */
97     NX_THREADS_ONLY_CALLER_CHECKING
98 
99     /* Call actual invalidate ARP dynamic entries function.  */
100     status =  _nx_arp_dynamic_entries_invalidate(ip_ptr);
101 
102     /* Return completion status.  */
103     return(status);
104 #else /* NX_DISABLE_IPV4  */
105     NX_PARAMETER_NOT_USED(ip_ptr);
106 
107     return(NX_NOT_SUPPORTED);
108 #endif /* !NX_DISABLE_IPV4  */
109 }
110 
111