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/**************************************************************************/
/* */
/* 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 */
/** */
/** Internet Protocol (IP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_ip.h"
#include "nx_ipv6.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxd_ip_raw_packet_source_send PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function sends a raw IP packet using specified interface IP */
/* address as source. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP control block */
/* packet_ptr Pointer to packet to send */
/* destination_ip Destination IP address */
/* address_index Index of IPv4 or IPv6 address */
/* to use as the source address*/
/* protocol Value for the protocol field */
/* ttl Value for ttl or hop limit */
/* tos Value for tos or traffic */
/* class and flow label */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* nx_ip_packet_send Core IP packet send service */
/* nx_ip_route_find Find a suitable outgoing */
/* interface. */
/* tx_mutex_get Get protection mutex */
/* tx_mutex_put Put protection mutex */
/* _nxd_ipv6_raw_packet_send_internal IPv6 raw packet send */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/* 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 */
/* */
/**************************************************************************/
UINT _nxd_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)
{
#ifndef NX_DISABLE_IPV4
ULONG next_hop_address = NX_NULL;
#endif /* NX_DISABLE_IPV4 */
UINT status = NX_SUCCESS;
#ifdef NX_DISABLE_IPV4
NX_PARAMETER_NOT_USED(ttl);
NX_PARAMETER_NOT_USED(tos);
#endif /* NX_DISABLE_IPV4 */
/* Add debug information. */
NX_PACKET_DEBUG(__FILE__, __LINE__, packet_ptr);
/* Get mutex protection. */
tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
#ifndef NX_DISABLE_IPV4
/* Store address information into the packet structure. */
if (destination_ip -> nxd_ip_version == NX_IP_VERSION_V4)
{
packet_ptr -> nx_packet_address.nx_packet_interface_ptr = &(ip_ptr -> nx_ip_interface[address_index]);
/* Figure out a suitable outgoing interface. */
/* Since next_hop_address is validated in _nx_ip_packet_send, there is no need to check the value here. */
_nx_ip_route_find(ip_ptr, destination_ip -> nxd_ip_address.v4, &packet_ptr -> nx_packet_address.nx_packet_interface_ptr, &next_hop_address);
/* If trace is enabled, insert this event into the trace buffer. */
NX_TRACE_IN_LINE_INSERT(NX_TRACE_IP_RAW_PACKET_SEND, ip_ptr, packet_ptr, destination_ip, 0, NX_TRACE_IP_EVENTS, 0, 0);
/* Yes, raw packet sending and receiving is enabled send packet! */
/*lint -e{644} suppress variable might not be initialized, since "next_hop_address" was initialized in _nx_ip_route_find. */
_nx_ip_packet_send(ip_ptr, packet_ptr, destination_ip -> nxd_ip_address.v4, (tos & 0xFF) << 16, (ttl & 0xFF), protocol << 16, NX_FRAGMENT_OKAY, next_hop_address);
}
#endif /* NX_DISABLE_IPV4 */
#ifdef FEATURE_NX_IPV6
if (destination_ip -> nxd_ip_version == NX_IP_VERSION_V6)
{
packet_ptr -> nx_packet_address.nx_packet_ipv6_address_ptr = &(ip_ptr -> nx_ipv6_address[address_index]);
status = _nxd_ipv6_raw_packet_send_internal(ip_ptr, packet_ptr, destination_ip, protocol);
}
#endif /* FEATURE_NX_IPV6 */
/* Release mutex protection. */
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
/* Return a status! */
return(status);
}