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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2025-present Eclipse ThreadX Contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** 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"
#include "nx_packet.h"
/* Bring in externs for caller checking code. */
NX_CALLER_CHECKING_EXTERNS
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxde_ip_raw_packet_send PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function sends a raw IP packet through the specified IPv6 */
/* interface. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP control block */
/* packet_ptr Pointer to packet to send */
/* destination_ip Destination IP 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 Actual completion status */
/* NX_PTR_ERROR Invalid pointer input */
/* NX_NOT_ENABLED Raw IP not enabled */
/* NX_IP_ADDRESS_ERROR Invalid address version */
/* NX_INVALID_PARAMETERS Invalid protocol specified */
/* NX_UNDERFLOW Invalid packet header */
/* */
/* CALLS */
/* */
/* _nxd_ip_raw_packet_source_send Actual raw packet send */
/* function. */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/**************************************************************************/
UINT _nxde_ip_raw_packet_send(NX_IP *ip_ptr, NX_PACKET **packet_ptr_ptr,
NXD_ADDRESS *destination_ip, ULONG protocol, UINT ttl, ULONG tos)
{
NX_PACKET *packet_ptr;
/* Setup packet pointer. */
packet_ptr = *packet_ptr_ptr;
/* Check for invalid input pointers. */
/* Cast the ULONG into a packet pointer. Since this is exactly what we wish to do, disable the lint warning with the following comment: */
/*lint -e{923} suppress cast of ULONG to pointer. */
if ((ip_ptr == NX_NULL) || (ip_ptr -> nx_ip_id != NX_IP_ID) || (packet_ptr == NX_NULL) ||
(packet_ptr -> nx_packet_union_next.nx_packet_tcp_queue_next != ((NX_PACKET *)NX_PACKET_ALLOCATED)))
{
return(NX_PTR_ERROR);
}
/* Check to see if IP raw packet processing is enabled. */
if (!ip_ptr -> nx_ip_raw_ip_processing)
{
return(NX_NOT_ENABLED);
}
/* Check for invalid IP address. */
if (!destination_ip || ((destination_ip -> nxd_ip_version != NX_IP_VERSION_V6) &&
(destination_ip -> nxd_ip_version != NX_IP_VERSION_V4)))
{
return(NX_IP_ADDRESS_ERROR);
}
/* Check for valid protocol. */
if ((protocol & 0x000000FF) != protocol)
{
return(NX_INVALID_PARAMETERS);
}
#ifndef NX_DISABLE_IPV4
if (destination_ip -> nxd_ip_version == NX_IP_VERSION_V4)
{
/* 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);
}
if (destination_ip -> nxd_ip_address.v4 == 0)
{
return(NX_IP_ADDRESS_ERROR);
}
}
#endif /* !NX_DISABLE_IPV4 */
#ifdef FEATURE_NX_IPV6
if (destination_ip -> nxd_ip_version == NX_IP_VERSION_V6)
{
/* 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);
}
if (CHECK_UNSPECIFIED_ADDRESS(&destination_ip -> nxd_ip_address.v6[0]))
{
return(NX_IP_ADDRESS_ERROR);
}
}
#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
_nxd_ip_raw_packet_source_send(ip_ptr, packet_ptr, destination_ip, 0, protocol, ttl, tos);
/* Now clear the application's packet pointer so it can't be accidentally
used again by the application. This is only done when error checking is
enabled. */
*packet_ptr_ptr = NX_NULL;
/* Return completion status. */
return(NX_SUCCESS);
}
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