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
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _nx_ip_raw_packet_send PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* Yuxin Zhou, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function checks for raw packet send enabled on the input IP */
44 /* instance, then finds a valid interface for sending the packet. If */
45 /* those requirements are met it sends a raw IP packet out the */
46 /* appropriate interface. */
47 /* */
48 /* INPUT */
49 /* */
50 /* ip_ptr Pointer to IP control block */
51 /* packet_ptr Pointer to packet to send */
52 /* destination_ip Destination IP address */
53 /* type_of_service Type of service for packet */
54 /* */
55 /* OUTPUT */
56 /* */
57 /* status Completion status */
58 /* */
59 /* CALLS */
60 /* */
61 /* _nx_ip_route_find Find out-going interface and */
62 /* next hop */
63 /* nx_ip_packet_send Core IP packet send service */
64 /* tx_mutex_get Get protection mutex */
65 /* tx_mutex_put Put protection mutex */
66 /* */
67 /* CALLED BY */
68 /* */
69 /* Application */
70 /* */
71 /* RELEASE HISTORY */
72 /* */
73 /* DATE NAME DESCRIPTION */
74 /* */
75 /* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
76 /* 09-30-2020 Yuxin Zhou Modified comment(s), */
77 /* resulting in version 6.1 */
78 /* */
79 /**************************************************************************/
_nx_ip_raw_packet_send(NX_IP * ip_ptr,NX_PACKET * packet_ptr,ULONG destination_ip,ULONG type_of_service)80 UINT _nx_ip_raw_packet_send(NX_IP *ip_ptr, NX_PACKET *packet_ptr,
81 ULONG destination_ip, ULONG type_of_service)
82 {
83
84 #ifndef NX_DISABLE_IPV4
85 ULONG next_hop_address = NX_NULL;
86
87 /* Add debug information. */
88 NX_PACKET_DEBUG(__FILE__, __LINE__, packet_ptr);
89
90 /* If trace is enabled, insert this event into the trace buffer. */
91 NX_TRACE_IN_LINE_INSERT(NX_TRACE_IP_RAW_PACKET_SEND, ip_ptr, destination_ip, type_of_service, packet_ptr, NX_TRACE_IP_EVENTS, 0, 0);
92
93 /* Get mutex protection. */
94 tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
95
96 /* Make sure a valid interface exists for the destination. */
97 if (_nx_ip_route_find(ip_ptr, destination_ip, &packet_ptr -> nx_packet_address.nx_packet_interface_ptr, &next_hop_address) != NX_SUCCESS)
98 {
99
100 /* Release protection. */
101 tx_mutex_put(&ip_ptr -> nx_ip_protection);
102
103 /* There is not; return the error status. */
104 return(NX_IP_ADDRESS_ERROR);
105 }
106 else
107 {
108
109 /* Yes, a valid interface exists. Send the packet! */
110 /*lint -e{644} suppress variable might not be initialized, since "next_hop_address" was initialized as long as return value is NX_SUCCESS. */
111 _nx_ip_packet_send(ip_ptr, packet_ptr, destination_ip, type_of_service, NX_IP_TIME_TO_LIVE, NX_IP_RAW, NX_FRAGMENT_OKAY, next_hop_address);
112 }
113
114 /* Release mutex protection. */
115 tx_mutex_put(&(ip_ptr -> nx_ip_protection));
116
117 /* Return a successful status! */
118 return(NX_SUCCESS);
119 #else /* NX_DISABLE_IPV4 */
120 NX_PARAMETER_NOT_USED(ip_ptr);
121 NX_PARAMETER_NOT_USED(packet_ptr);
122 NX_PARAMETER_NOT_USED(destination_ip);
123 NX_PARAMETER_NOT_USED(type_of_service);
124
125 return(NX_NOT_SUPPORTED);
126 #endif /* !NX_DISABLE_IPV4 */
127 }
128
129
