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_ipv6.h"
30 #include "nx_icmpv6.h"
31
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _nxd_ipv6_stateless_address_autoconfig_enable PORTABLE C */
38 /* 6.2.1 */
39 /* AUTHOR */
40 /* */
41 /* Yuxin Zhou, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function enables the IPv6 stateless address auto configuration */
46 /* feature, */
47 /* */
48 /* INPUT */
49 /* */
50 /* ip_ptr IP instance pointer */
51 /* interface_index The interface to operate on */
52 /* */
53 /* OUTPUT */
54 /* */
55 /* status Completion status */
56 /* */
57 /* CALLS */
58 /* */
59 /* tx_mutex_get Obtain a protection mutex */
60 /* tx_mutex_put Release protection mutex */
61 /* */
62 /* CALLED BY */
63 /* */
64 /* Application Code */
65 /* */
66 /* RELEASE HISTORY */
67 /* */
68 /* DATE NAME DESCRIPTION */
69 /* */
70 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
71 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
72 /* resulting in version 6.1 */
73 /* 03-08-2023 Tiejun Zhou Modified comment(s), and */
74 /* fixed compiler warnings, */
75 /* resulting in version 6.2.1 */
76 /* */
77 /**************************************************************************/
_nxd_ipv6_stateless_address_autoconfig_enable(NX_IP * ip_ptr,UINT interface_index)78 UINT _nxd_ipv6_stateless_address_autoconfig_enable(NX_IP *ip_ptr, UINT interface_index)
79 {
80
81
82 #if defined(FEATURE_NX_IPV6) && defined(NX_IPV6_STATELESS_AUTOCONFIG_CONTROL)
83 NX_INTERFACE *interface_ptr;
84
85
86 /* Set interface_ptr. */
87 interface_ptr = &ip_ptr -> nx_ip_interface[interface_index];
88
89 /* Make sure IPv6 is not already enabled. */
90 if (interface_ptr -> nx_ipv6_stateless_address_autoconfig_status == NX_STATELESS_ADDRESS_AUTOCONFIG_ENABLED)
91 {
92 return(NX_ALREADY_ENABLED);
93 }
94
95 /* If trace is enabled, insert this event into the trace buffer. */
96 NX_TRACE_IN_LINE_INSERT(NXD_TRACE_IPV6_STATELESS_ADDRESS_AUTOCONFIG_ENABLE, ip_ptr, interface_ptr, 0, 0, NX_TRACE_IP_EVENTS, 0, 0);
97
98 /* Obtain the IP mutex so we can manipulate the internal routing table. */
99 tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
100
101 /* Install IPv6 packet receive processing function pointer */
102 interface_ptr -> nx_ipv6_stateless_address_autoconfig_status = NX_STATELESS_ADDRESS_AUTOCONFIG_ENABLED;
103
104 #ifndef NX_DISABLE_ICMPV6_ROUTER_SOLICITATION
105 /* Reset the RS count. */
106 interface_ptr -> nx_ipv6_rtr_solicitation_count = ip_ptr -> nx_ip_interface[interface_index].nx_ipv6_rtr_solicitation_max;
107
108 interface_ptr -> nx_ipv6_rtr_solicitation_timer = NX_ICMPV6_RTR_SOLICITATION_DELAY;
109 #endif /* NX_DISABLE_ICMPV6_ROUTER_SOLICITATION */
110
111 /* Release the IP protection. */
112 tx_mutex_put(&(ip_ptr -> nx_ip_protection));
113
114 /* Return successful completion. */
115 return(NX_SUCCESS);
116 #else
117 NX_PARAMETER_NOT_USED(ip_ptr);
118 NX_PARAMETER_NOT_USED(interface_index);
119
120 return(NX_NOT_SUPPORTED);
121 #endif /* FEATURE_NX_IPV6 && NX_IPV6_STATELESS_AUTOCONFIG_CONTROL */
122 }
123
124
