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https://github.com/RIOT-OS/RIOT.git
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udp: put UDP header in its own module
This commit is contained in:
Martine Lenders
parent
54fe08feda
commit
a5e039cf4d
@ -145,6 +145,7 @@ endif
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ifneq (,$(filter ng_udp,$(USEMODULE)))
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USEMODULE += ng_netbase
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USEMODULE += inet_csum
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USEMODULE += udp
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endif
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ifneq (,$(filter ng_nettest,$(USEMODULE)))
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@ -121,6 +121,9 @@ endif
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ifneq (,$(filter ng_netdev_eth,$(USEMODULE)))
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DIRS += net/link_layer/ng_netdev_eth
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endif
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ifneq (,$(filter udp,$(USEMODULE)))
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DIRS += net/transport_layer/udp
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endif
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DIRS += $(dir $(wildcard $(addsuffix /Makefile, ${USEMODULE})))
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@ -26,6 +26,7 @@
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#include "byteorder.h"
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#include "net/ng_netbase.h"
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#include "net/udp.h"
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#ifdef __cplusplus
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extern "C" {
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@ -52,17 +53,6 @@ extern "C" {
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#define NG_UDP_STACK_SIZE (THREAD_STACKSIZE_DEFAULT)
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#endif
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/**
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* @brief UDP header definition
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*/
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typedef struct __attribute__((packed)) {
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network_uint16_t src_port; /**< source port, in network byte order */
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network_uint16_t dst_port; /**< destination port, network byte order */
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network_uint16_t length; /**< payload length (including the header),
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* network byte order */
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network_uint16_t checksum; /**< checksum */
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} ng_udp_hdr_t;
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/**
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* @brief Calculate the checksum for the given packet
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*
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@ -93,13 +83,6 @@ ng_pktsnip_t *ng_udp_hdr_build(ng_pktsnip_t *payload,
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uint8_t *src, size_t src_len,
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uint8_t *dst, size_t dst_len);
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/**
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* @brief Print the given UDP header to STDOUT
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*
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* @param[in] hdr UDP header to print
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*/
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void ng_udp_hdr_print(ng_udp_hdr_t *hdr);
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/**
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* @brief Initialize and start UDP
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*
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54
sys/include/net/udp.h
Normal file
54
sys/include/net/udp.h
Normal file
@ -0,0 +1,54 @@
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/*
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* Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @defgroup net_udp UDP
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* @ingroup net
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* @brief UDP header definition
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* @see <a href="https://tools.ietf.org/html/rfc768">
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* RFC 768
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* </a>
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* @{
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*
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* @file
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* @brief UDP header definition
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*
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* @author Martine Lenders <mlenders@inf.fu-berlin.de>
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*/
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#ifndef UDP_H_
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#define UDP_H_
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#include "byteorder.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief UDP header
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*/
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typedef struct __attribute__((packed)) {
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network_uint16_t src_port; /**< source port */
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network_uint16_t dst_port; /**< destination port */
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network_uint16_t length; /**< payload length (including the header) */
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network_uint16_t checksum; /**< checksum */
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} udp_hdr_t;
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/**
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* @brief Print the given UDP header to STDOUT
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*
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* @param[in] hdr UDP header to print
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*/
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void udp_hdr_print(udp_hdr_t *hdr);
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#ifdef __cplusplus
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}
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#endif
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#endif /* UDP_H_ */
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/** @} */
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@ -31,7 +31,7 @@
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#include "net/ng_ipv6/addr.h"
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#include "net/ng_ipv6/hdr.h"
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#include "net/ng_sixlowpan.h"
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#include "net/ng_udp.h"
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#include "net/udp.h"
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#include "od.h"
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/**
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@ -82,7 +82,7 @@ static void _dump_snip(ng_pktsnip_t *pkt)
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#ifdef MODULE_NG_UDP
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case NG_NETTYPE_UDP:
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printf("NETTYPE_UDP (%i)\n", pkt->type);
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ng_udp_hdr_print(pkt->data);
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udp_hdr_print(pkt->data);
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break;
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#endif
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#ifdef TEST_SUITES
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@ -76,7 +76,7 @@ static uint16_t _calc_csum(ng_pktsnip_t *hdr, ng_pktsnip_t *pseudo_hdr,
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payload = payload->next;
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}
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/* process applicable UDP header bytes */
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csum = inet_csum(csum, (uint8_t *)hdr->data, sizeof(ng_udp_hdr_t));
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csum = inet_csum(csum, (uint8_t *)hdr->data, sizeof(udp_hdr_t));
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switch (pseudo_hdr->type) {
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#ifdef MODULE_NG_IPV6
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@ -96,7 +96,7 @@ static uint16_t _calc_csum(ng_pktsnip_t *hdr, ng_pktsnip_t *pseudo_hdr,
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static void _receive(ng_pktsnip_t *pkt)
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{
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ng_pktsnip_t *udp, *ipv6;
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ng_udp_hdr_t *hdr;
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udp_hdr_t *hdr;
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uint32_t port;
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/* mark UDP header */
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@ -107,7 +107,7 @@ static void _receive(ng_pktsnip_t *pkt)
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return;
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}
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pkt = udp;
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udp = ng_pktbuf_mark(pkt, sizeof(ng_udp_hdr_t), NG_NETTYPE_UDP);
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udp = ng_pktbuf_mark(pkt, sizeof(udp_hdr_t), NG_NETTYPE_UDP);
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if (udp == NULL) {
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DEBUG("udp: error marking UDP header, dropping packet\n");
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ng_pktbuf_release(pkt);
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@ -116,7 +116,7 @@ static void _receive(ng_pktsnip_t *pkt)
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/* mark payload as Type: UNDEF */
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pkt->type = NG_NETTYPE_UNDEF;
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/* get explicit pointer to UDP header */
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hdr = (ng_udp_hdr_t *)udp->data;
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hdr = (udp_hdr_t *)udp->data;
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LL_SEARCH_SCALAR(pkt, ipv6, type, NG_NETTYPE_IPV6);
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@ -141,7 +141,7 @@ static void _receive(ng_pktsnip_t *pkt)
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static void _send(ng_pktsnip_t *pkt)
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{
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ng_udp_hdr_t *hdr;
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udp_hdr_t *hdr;
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ng_pktsnip_t *udp_snip;
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/* get udp snip and hdr */
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@ -155,7 +155,7 @@ static void _send(ng_pktsnip_t *pkt)
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ng_pktbuf_release(pkt);
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return;
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}
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hdr = (ng_udp_hdr_t *)udp_snip->data;
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hdr = (udp_hdr_t *)udp_snip->data;
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/* fill in size field */
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hdr->length = byteorder_htons(ng_pkt_len(udp_snip));
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@ -224,7 +224,7 @@ int ng_udp_calc_csum(ng_pktsnip_t *hdr, ng_pktsnip_t *pseudo_hdr)
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if (csum == 0) {
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return -ENOENT;
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}
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((ng_udp_hdr_t *)hdr->data)->checksum = byteorder_htons(csum);
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((udp_hdr_t *)hdr->data)->checksum = byteorder_htons(csum);
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return 0;
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}
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@ -233,7 +233,7 @@ ng_pktsnip_t *ng_udp_hdr_build(ng_pktsnip_t *payload,
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uint8_t *dst, size_t dst_len)
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{
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ng_pktsnip_t *res;
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ng_udp_hdr_t *hdr;
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udp_hdr_t *hdr;
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/* check parameters */
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if (src == NULL || dst == NULL ||
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@ -241,12 +241,12 @@ ng_pktsnip_t *ng_udp_hdr_build(ng_pktsnip_t *payload,
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return NULL;
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}
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/* allocate header */
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res = ng_pktbuf_add(payload, NULL, sizeof(ng_udp_hdr_t), NG_NETTYPE_UDP);
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res = ng_pktbuf_add(payload, NULL, sizeof(udp_hdr_t), NG_NETTYPE_UDP);
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if (res == NULL) {
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return NULL;
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}
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/* initialize header */
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hdr = (ng_udp_hdr_t *)res->data;
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hdr = (udp_hdr_t *)res->data;
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hdr->src_port = byteorder_htons(*((uint16_t *)src));
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hdr->dst_port = byteorder_htons(*((uint16_t *)dst));
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hdr->checksum = byteorder_htons(0);
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1
sys/net/transport_layer/udp/Makefile
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1
sys/net/transport_layer/udp/Makefile
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@ -0,0 +1 @@
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include $(RIOTBASE)/Makefile.base
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@ -21,9 +21,9 @@
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#include <stdio.h>
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#include <inttypes.h>
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#include "net/ng_udp.h"
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#include "net/udp.h"
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void ng_udp_hdr_print(ng_udp_hdr_t *hdr)
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void udp_hdr_print(udp_hdr_t *hdr)
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{
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printf(" src-port: %5" PRIu16 " dst-port: %5" PRIu16 "\n",
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byteorder_ntohs(hdr->src_port), byteorder_ntohs(hdr->dst_port));
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