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 /** Internet Protocol (IP) */
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_ipv6.h"
30
31 /* Bring in externs for caller checking code. */
32
33 NX_CALLER_CHECKING_EXTERNS
34
35 /**************************************************************************/
36 /* */
37 /* FUNCTION RELEASE */
38 /* */
39 /* _nxde_ip_raw_packet_source_send PORTABLE C */
40 /* 6.1 */
41 /* AUTHOR */
42 /* */
43 /* Yuxin Zhou, Microsoft Corporation */
44 /* */
45 /* DESCRIPTION */
46 /* */
47 /* This function does error checking for the raw IP packet send serivce*/
48 /* out the specified IP source. */
49 /* */
50 /* INPUT */
51 /* */
52 /* ip_ptr Pointer to IP control block */
53 /* packet_ptr Pointer to packet to send */
54 /* destination_ip Destination IP address */
55 /* address_index Index to the IPv6 address */
56 /* protocol Value for the protocol field */
57 /* ttl Value for ttl or hop limit */
58 /* tos Value for tos or traffic */
59 /* class and flow label */
60 /* */
61 /* OUTPUT */
62 /* */
63 /* NX_PTR_ERROR Invalid pointer input */
64 /* NX_NOT_ENABLED Raw packet send not enabled */
65 /* NX_IP_ADDRESS_ERROR Invalid input address */
66 /* NX_INVALID_INTERFACE Invalid interface input */
67 /* status Completion status */
68 /* */
69 /* CALLS */
70 /* */
71 /* nxd_ip_raw_packet_source_send Actual raw packet send service*/
72 /* */
73 /* CALLED BY */
74 /* */
75 /* Application */
76 /* */
77 /* RELEASE HISTORY */
78 /* */
79 /* DATE NAME DESCRIPTION */
80 /* */
81 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
82 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
83 /* resulting in version 6.1 */
84 /* */
85 /**************************************************************************/
_nxde_ip_raw_packet_source_send(NX_IP * ip_ptr,NX_PACKET * packet_ptr,NXD_ADDRESS * destination_ip,UINT address_index,ULONG protocol,UINT ttl,ULONG tos)86 UINT _nxde_ip_raw_packet_source_send(NX_IP *ip_ptr, NX_PACKET *packet_ptr,
87 NXD_ADDRESS *destination_ip, UINT address_index, ULONG protocol, UINT ttl, ULONG tos)
88 {
89
90 UINT status;
91
92 /* Check for invalid input pointers. */
93 if ((ip_ptr == NX_NULL) || (packet_ptr == NX_NULL) || (destination_ip == NX_NULL))
94 {
95 return(NX_PTR_ERROR);
96 }
97
98 /* Determine if raw IP packet sending/receiving is enabled. */
99 if (!ip_ptr -> nx_ip_raw_ip_processing)
100 {
101 return(NX_NOT_ENABLED);
102 }
103
104 /* Check that the destination address version is either IPv4 or IPv6. */
105 if ((destination_ip -> nxd_ip_version != NX_IP_VERSION_V4) &&
106 (destination_ip -> nxd_ip_version != NX_IP_VERSION_V6))
107 {
108 return(NX_IP_ADDRESS_ERROR);
109 }
110
111 #ifndef NX_DISABLE_IPV4
112 if (destination_ip -> nxd_ip_version == NX_IP_VERSION_V4)
113 {
114
115 if (destination_ip -> nxd_ip_address.v4 == 0)
116 {
117 return(NX_IP_ADDRESS_ERROR);
118 }
119
120 /* Check for valid interface. */
121 if (address_index >= NX_MAX_IP_INTERFACES)
122 {
123 return(NX_INVALID_INTERFACE);
124 }
125
126 /* Check for an invalid packet prepend pointer for IPv4 packet. */
127 /*lint -e{946} suppress pointer subtraction, since it is necessary. */
128 if ((packet_ptr -> nx_packet_prepend_ptr - sizeof(NX_IPV4_HEADER)) < packet_ptr -> nx_packet_data_start)
129 {
130 return(NX_UNDERFLOW);
131 }
132 }
133 #endif /* !NX_DISABLE_IPV4 */
134
135 #ifdef FEATURE_NX_IPV6
136 if (destination_ip -> nxd_ip_version == NX_IP_VERSION_V6)
137 {
138
139 /* destination_ip -> nxd_ip_version == NX_IP_VERSION_V6. */
140 /* Check for valid destination address. */
141 if (CHECK_UNSPECIFIED_ADDRESS(&destination_ip -> nxd_ip_address.v6[0]))
142 {
143 return(NX_IP_ADDRESS_ERROR);
144 }
145
146 /* Check for valid interface. */
147 if (address_index >= (NX_MAX_IPV6_ADDRESSES + NX_LOOPBACK_IPV6_ENABLED))
148 {
149 return(NX_IP_ADDRESS_ERROR);
150 }
151
152 /* Check for an invalid packet prepend pointer for IPv6 packet. */
153 /*lint -e{946} suppress pointer subtraction, since it is necessary. */
154 if ((packet_ptr -> nx_packet_prepend_ptr - sizeof(NX_IPV6_HEADER)) < packet_ptr -> nx_packet_data_start)
155 {
156 return(NX_UNDERFLOW);
157 }
158 }
159 #endif /* FEATURE_NX_IPV6 */
160
161 /* Check for an invalid packet append pointer. */
162 /*lint -e{946} suppress pointer subtraction, since it is necessary. */
163 if (packet_ptr -> nx_packet_append_ptr > packet_ptr -> nx_packet_data_end)
164 {
165 return(NX_OVERFLOW);
166 }
167
168 /* Check for appropriate caller. */
169 NX_THREADS_ONLY_CALLER_CHECKING
170
171 /* Call the actual service. */
172 status = _nxd_ip_raw_packet_source_send(ip_ptr, packet_ptr, destination_ip, address_index, protocol, ttl, tos);
173
174 /* Return completion status. */
175 return(status);
176 }
177
178
