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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"
/* Bring in externs for caller checking code. */
NX_CALLER_CHECKING_EXTERNS
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxde_ip_raw_packet_source_send PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function does error checking for the raw IP packet send serivce*/
/* out the specified IP source. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP control block */
/* packet_ptr Pointer to packet to send */
/* destination_ip Destination IP address */
/* address_index Index to the IPv6 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 */
/* */
/* NX_PTR_ERROR Invalid pointer input */
/* NX_NOT_ENABLED Raw packet send not enabled */
/* NX_IP_ADDRESS_ERROR Invalid input address */
/* NX_INVALID_INTERFACE Invalid interface input */
/* status Completion status */
/* */
/* CALLS */
/* */
/* nxd_ip_raw_packet_source_send Actual raw packet send service*/
/* */
/* 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 _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)
{
UINT status;
/* Check for invalid input pointers. */
if ((ip_ptr == NX_NULL) || (packet_ptr == NX_NULL) || (destination_ip == NX_NULL))
{
return(NX_PTR_ERROR);
}
/* Determine if raw IP packet sending/receiving is enabled. */
if (!ip_ptr -> nx_ip_raw_ip_processing)
{
return(NX_NOT_ENABLED);
}
/* Check that the destination address version is either IPv4 or IPv6. */
if ((destination_ip -> nxd_ip_version != NX_IP_VERSION_V4) &&
(destination_ip -> nxd_ip_version != NX_IP_VERSION_V6))
{
return(NX_IP_ADDRESS_ERROR);
}
#ifndef NX_DISABLE_IPV4
if (destination_ip -> nxd_ip_version == NX_IP_VERSION_V4)
{
if (destination_ip -> nxd_ip_address.v4 == 0)
{
return(NX_IP_ADDRESS_ERROR);
}
/* Check for valid interface. */
if (address_index >= NX_MAX_IP_INTERFACES)
{
return(NX_INVALID_INTERFACE);
}
/* Check for an invalid packet prepend pointer for IPv4 packet. */
/*lint -e{946} suppress pointer subtraction, since it is necessary. */
if ((packet_ptr -> nx_packet_prepend_ptr - sizeof(NX_IPV4_HEADER)) < packet_ptr -> nx_packet_data_start)
{
return(NX_UNDERFLOW);
}
}
#endif /* !NX_DISABLE_IPV4 */
#ifdef FEATURE_NX_IPV6
if (destination_ip -> nxd_ip_version == NX_IP_VERSION_V6)
{
/* destination_ip -> nxd_ip_version == NX_IP_VERSION_V6. */
/* Check for valid destination address. */
if (CHECK_UNSPECIFIED_ADDRESS(&destination_ip -> nxd_ip_address.v6[0]))
{
return(NX_IP_ADDRESS_ERROR);
}
/* Check for valid interface. */
if (address_index >= (NX_MAX_IPV6_ADDRESSES + NX_LOOPBACK_IPV6_ENABLED))
{
return(NX_IP_ADDRESS_ERROR);
}
/* Check for an invalid packet prepend pointer for IPv6 packet. */
/*lint -e{946} suppress pointer subtraction, since it is necessary. */
if ((packet_ptr -> nx_packet_prepend_ptr - sizeof(NX_IPV6_HEADER)) < packet_ptr -> nx_packet_data_start)
{
return(NX_UNDERFLOW);
}
}
#endif /* FEATURE_NX_IPV6 */
/* Check for an invalid packet append pointer. */
/*lint -e{946} suppress pointer subtraction, since it is necessary. */
if (packet_ptr -> nx_packet_append_ptr > packet_ptr -> nx_packet_data_end)
{
return(NX_OVERFLOW);
}
/* Check for appropriate caller. */
NX_THREADS_ONLY_CALLER_CHECKING
/* Call the actual service. */
status = _nxd_ip_raw_packet_source_send(ip_ptr, packet_ptr, destination_ip, address_index, protocol, ttl, tos);
/* Return completion status. */
return(status);
}
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