eb2adf30f3
This API is meant to work with pre-allocated net_pkt. It assumes net_pkt's buffer cursor is at the right position where to create the IPv4 header. Once done, the cursor will be placed right after the newly created IPv4 header. Finalizing assumes the same. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/** @file
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@brief IPv4 related functions
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This is not to be included by the application.
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*/
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __IPV4_H
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#define __IPV4_H
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#include <zephyr/types.h>
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#include <net/net_ip.h>
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#include <net/net_pkt.h>
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#include <net/net_if.h>
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#include <net/net_context.h>
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#include "ipv4.h"
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/**
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* @brief Create IPv4 packet in provided net_pkt.
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*
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* @param pkt Network packet
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* @param src Source IPv4 address
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* @param dst Destination IPv4 address
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* @param iface Network interface
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* @param next_header Protocol type of the next header after IPv4 header.
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*
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* @return Return network packet that contains the IPv4 packet or NULL if
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* network packet could not be allocated.
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*/
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struct net_pkt *net_ipv4_create(struct net_pkt *pkt,
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const struct in_addr *src,
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const struct in_addr *dst,
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struct net_if *iface,
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u8_t next_header_proto);
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/**
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* @brief Finalize IPv4 packet. It should be called right before
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* sending the packet and after all the data has been added into
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* the packet. This function will set the length of the
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* packet and calculate the higher protocol checksum if needed.
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*
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* @param pkt Network packet
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* @param next_header_proto Protocol type of the next header after IPv4 header.
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*
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*/
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void net_ipv4_finalize(struct net_pkt *pkt, u8_t next_header_proto);
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/**
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* @brief Create IPv4 packet in provided net_pkt.
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*
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* @param pkt Network packet
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* @param src Source IPv4 address
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* @param dst Destination IPv4 address
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*
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* @return 0 on success, negative errno otherwise.
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*/
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int net_ipv4_create_new(struct net_pkt *pkt,
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const struct in_addr *src,
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const struct in_addr *dst);
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/**
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* @brief Finalize IPv4 packet. It should be called right before
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* sending the packet and after all the data has been added into
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* the packet. This function will set the length of the
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* packet and calculate the higher protocol checksum if needed.
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*
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* @param pkt Network packet
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* @param next_header_proto Protocol type of the next header after IPv4 header.
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*
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* @return 0 on success, negative errno otherwise.
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*/
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int net_ipv4_finalize_new(struct net_pkt *pkt, u8_t next_header_proto);
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#endif /* __IPV4_H */
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