net: tests: Unit tests for network utilities
Right now there are tests for IP packet checksum calculation. Change-Id: I1e9e72d01d4690728269c4484f8628350cf95729 Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit is contained in:
Jukka Rissanen
parent
0d5e829da6
commit
4445e53f1e
5 changed files with 304 additions and 0 deletions
6
tests/net/utils/Makefile
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6
tests/net/utils/Makefile
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@ -0,0 +1,6 @@
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BOARD ?= qemu_x86
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MDEF_FILE = prj.mdef
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KERNEL_TYPE ?= nano
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CONF_FILE = prj_$(ARCH).conf
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include $(ZEPHYR_BASE)/Makefile.inc
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5
tests/net/utils/prj.mdef
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5
tests/net/utils/prj.mdef
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% Application : Network test
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% TASK NAME PRIO ENTRY STACK GROUPS
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% ===================================================
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TASK MAIN 7 mainloop 2048 [EXE]
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15
tests/net/utils/prj_x86.conf
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15
tests/net/utils/prj_x86.conf
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CONFIG_NETWORKING=y
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CONFIG_NET_IPV6=y
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CONFIG_NET_IPV4=y
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CONFIG_NET_YAIP=y
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CONFIG_NET_BUF=y
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CONFIG_MAIN_STACK_SIZE=2048
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CONFIG_NET_NBUF_RX_COUNT=2
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CONFIG_NET_NBUF_TX_COUNT=2
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CONFIG_NET_NBUF_DATA_COUNT=7
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CONFIG_NET_LOG=y
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CONFIG_SYS_LOG_SHOW_COLOR=y
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CONFIG_TEST_RANDOM_GENERATOR=y
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CONFIG_NET_IFACE_UNICAST_IPV6_ADDR_COUNT=3
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CONFIG_NETWORK_IP_STACK_DEBUG_UTILS=y
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2
tests/net/utils/src/Makefile
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2
tests/net/utils/src/Makefile
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@ -0,0 +1,2 @@
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obj-y = main.o
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ccflags-y += -I${srctree}/net/yaip
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276
tests/net/utils/src/main.c
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276
tests/net/utils/src/main.c
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@ -0,0 +1,276 @@
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/* main.c - Application main entry point */
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdint.h>
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#include <stddef.h>
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <device.h>
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#include <init.h>
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#include <misc/printk.h>
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#include <net/net_core.h>
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#include <net/nbuf.h>
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#include <net/net_ip.h>
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#define NET_DEBUG 1
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#include "net_private.h"
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/* ICMPv6 frame (104 bytes) */
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static const unsigned char pkt1[104] = {
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/* IPv6 header starts here */
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0x60, 0x0c, 0x21, 0x63, 0x00, 0x40, 0x3a, 0x40, /* `.!c.@:@ */
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0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, /* ....... */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, /* ........ */
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0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, /* ....... */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* ........ */
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/* ICMPv6 header starts here */
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0x80, 0x00, 0x65, 0x6a, 0x68, 0x47, 0x00, 0x01, /* ..ejhG.. */
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0x95, 0x5f, 0x3c, 0x57, 0x00, 0x00, 0x00, 0x00, /* ._<W.... */
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0xbc, 0xd3, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, /* ........ */
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* ........ */
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* ........ */
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* !"#$%&' */
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0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* ()*+,-./ */
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 /* 01234567 */
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};
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/* ICMPv6 Frame (176 bytes) */
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static const unsigned char pkt2[176] = {
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/* IPv6 header starts here */
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0x60, 0x0c, 0x21, 0x63, 0x00, 0x88, 0x3a, 0x40, /* `.!c..:@ */
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0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, /* ....... */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, /* ........ */
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0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, /* ....... */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* ........ */
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/* ICMPv6 header starts here */
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0x80, 0x00, 0x38, 0xbf, 0x32, 0x8d, 0x00, 0x01, /* ..8.2... */
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0x78, 0x78, 0x3c, 0x57, 0x00, 0x00, 0x00, 0x00, /* xx<W.... */
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0x63, 0xdb, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, /* c....... */
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* ........ */
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* ........ */
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* !"#$%&' */
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0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* ()*+,-./ */
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 01234567 */
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0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 89:;<=>? */
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0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* @ABCDEFG */
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0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* HIJKLMNO */
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* PQRSTUVW */
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0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* XYZ[\]^_ */
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0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* `abcdefg */
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0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* hijklmno */
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0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* pqrstuvw */
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0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f /* xyz{|}~. */
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};
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/* Frame (199 bytes) */
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static const unsigned char pkt3[199] = {
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/* IPv6 header starts here */
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0x60, 0x0c, 0x21, 0x63, 0x00, 0x9f, 0x3a, 0x40, /* `.!c..:@ */
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0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, /* ....... */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, /* ........ */
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0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, /* ....... */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, /* ........ */
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/* ICMPv6 header starts here */
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0x80, 0x00, 0x57, 0xac, 0x32, 0xeb, 0x00, 0x01, /* ..W.2... */
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0x8f, 0x79, 0x3c, 0x57, 0x00, 0x00, 0x00, 0x00, /* .y<W.... */
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0xa8, 0x78, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, /* .x...... */
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* ........ */
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, /* ........ */
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, /* !"#$%&' */
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0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, /* ()*+,-./ */
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, /* 01234567 */
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0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, /* 89:;<=>? */
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0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, /* @ABCDEFG */
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0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, /* HIJKLMNO */
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, /* PQRSTUVW */
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0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, /* XYZ[\]^_ */
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0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, /* `abcdefg */
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0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, /* hijklmno */
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0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, /* pqrstuvw */
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0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* xyz{|}~. */
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* ........ */
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0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, /* ........ */
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96 /* ....... */
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};
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#ifdef CONFIG_MICROKERNEL
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void mainloop(void)
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#else
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void main(void)
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#endif
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{
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struct net_buf *frag, *buf;
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uint16_t chksum, orig_chksum;
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int hdr_len, i, chunk, datalen, total = 0;
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/* Packet fits to one fragment */
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buf = net_nbuf_get_reserve_rx(0);
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frag = net_nbuf_get_reserve_data(10);
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net_buf_frag_add(buf, frag);
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memcpy(net_buf_add(frag, sizeof(pkt1)), pkt1, sizeof(pkt1));
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if (frag->len != sizeof(pkt1)) {
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printk("Fragment len %d invalid, should be %d\n",
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frag->len, sizeof(pkt1));
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return;
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}
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net_nbuf_ip_hdr_len(buf) = sizeof(struct net_ipv6_hdr);
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net_nbuf_family(buf) = AF_INET6;
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net_nbuf_ext_len(buf) = 0;
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/* We need to zero the ICMP checksum */
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hdr_len = net_nbuf_ip_hdr_len(buf);
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orig_chksum = (frag->data[hdr_len + 2] << 8) + frag->data[hdr_len + 3];
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frag->data[hdr_len + 2] = 0;
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frag->data[hdr_len + 3] = 0;
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chksum = ntohs(~net_calc_chksum(buf, IPPROTO_ICMPV6));
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if (chksum != orig_chksum) {
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printk("Invalid chksum 0x%x in pkt1, should be 0x%x\n",
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chksum, orig_chksum);
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return;
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}
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net_nbuf_unref(buf);
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/* Then a case where there will be two fragments */
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buf = net_nbuf_get_reserve_rx(0);
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frag = net_nbuf_get_reserve_data(10);
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net_buf_frag_add(buf, frag);
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memcpy(net_buf_add(frag, sizeof(pkt2) / 2), pkt2, sizeof(pkt2) / 2);
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net_nbuf_ip_hdr_len(buf) = sizeof(struct net_ipv6_hdr);
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net_nbuf_family(buf) = AF_INET6;
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net_nbuf_ext_len(buf) = 0;
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hdr_len = net_nbuf_ip_hdr_len(buf);
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orig_chksum = (frag->data[hdr_len + 2] << 8) + frag->data[hdr_len + 3];
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frag->data[hdr_len + 2] = 0;
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frag->data[hdr_len + 3] = 0;
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frag = net_nbuf_get_reserve_data(10);
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net_buf_frag_add(buf, frag);
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memcpy(net_buf_add(frag, sizeof(pkt2) - sizeof(pkt2) / 2),
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pkt2 + sizeof(pkt2) / 2, sizeof(pkt2) - sizeof(pkt2) / 2);
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chksum = ntohs(~net_calc_chksum(buf, IPPROTO_ICMPV6));
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if (chksum != orig_chksum) {
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printk("Invalid chksum 0x%x in pkt2, should be 0x%x\n",
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chksum, orig_chksum);
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return;
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}
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net_nbuf_unref(buf);
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/* Then a case where there will be two fragments but odd data size */
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buf = net_nbuf_get_reserve_rx(0);
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frag = net_nbuf_get_reserve_data(10);
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net_buf_frag_add(buf, frag);
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memcpy(net_buf_add(frag, sizeof(pkt3) / 2), pkt3, sizeof(pkt3) / 2);
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printk("First fragment will have %d bytes\n", sizeof(pkt3) / 2);
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net_nbuf_ip_hdr_len(buf) = sizeof(struct net_ipv6_hdr);
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net_nbuf_family(buf) = AF_INET6;
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net_nbuf_ext_len(buf) = 0;
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hdr_len = net_nbuf_ip_hdr_len(buf);
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orig_chksum = (frag->data[hdr_len + 2] << 8) + frag->data[hdr_len + 3];
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frag->data[hdr_len + 2] = 0;
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frag->data[hdr_len + 3] = 0;
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frag = net_nbuf_get_reserve_data(10);
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net_buf_frag_add(buf, frag);
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memcpy(net_buf_add(frag, sizeof(pkt3) - sizeof(pkt3) / 2),
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pkt3 + sizeof(pkt3) / 2, sizeof(pkt3) - sizeof(pkt3) / 2);
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printk("Second fragment will have %d bytes\n",
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sizeof(pkt3) - sizeof(pkt3) / 2);
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chksum = ntohs(~net_calc_chksum(buf, IPPROTO_ICMPV6));
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if (chksum != orig_chksum) {
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printk("Invalid chksum 0x%x in pkt3, should be 0x%x\n",
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chksum, orig_chksum);
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return;
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}
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net_nbuf_unref(buf);
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/* Then a case where there will be several fragments */
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buf = net_nbuf_get_reserve_rx(0);
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frag = net_nbuf_get_reserve_data(10);
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net_buf_frag_add(buf, frag);
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memcpy(net_buf_add(frag, sizeof(struct net_ipv6_hdr)), pkt3,
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sizeof(struct net_ipv6_hdr));
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printk("[0] IPv6 fragment will have %d bytes\n", frag->len);
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net_nbuf_ip_hdr_len(buf) = sizeof(struct net_ipv6_hdr);
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net_nbuf_family(buf) = AF_INET6;
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net_nbuf_ext_len(buf) = 0;
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chunk = 29;
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datalen = sizeof(pkt3) - sizeof(struct net_ipv6_hdr);
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for (i = 0; i < datalen/chunk; i++) {
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/* Next fragments will contain the data in odd sizes */
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frag = net_nbuf_get_reserve_data(10);
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net_buf_frag_add(buf, frag);
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memcpy(net_buf_add(frag, chunk),
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pkt3 + sizeof(struct net_ipv6_hdr) + i * chunk, chunk);
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total += chunk;
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printk("[%d] fragment will have %d bytes, icmp data %d\n",
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i + 1, frag->len, total);
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if (i == 0) {
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/* First fragment will contain the ICMP header
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* and we must clear the checksum field.
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*/
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orig_chksum = (frag->data[2] << 8) +
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frag->data[3];
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frag->data[2] = 0;
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frag->data[3] = 0;
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}
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}
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if ((datalen - total) > 0) {
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frag = net_nbuf_get_reserve_data(10);
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net_buf_frag_add(buf, frag);
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memcpy(net_buf_add(frag, datalen - total),
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pkt3 + sizeof(struct net_ipv6_hdr) + i * chunk,
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datalen - total);
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total += datalen - total;
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printk("[%d] last fragment will have %d bytes, icmp data %d\n",
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i + 1, frag->len, total);
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}
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if ((total + sizeof(struct net_ipv6_hdr)) != sizeof(pkt3) ||
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(total + sizeof(struct net_ipv6_hdr)) !=
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net_buf_frags_len(buf->frags)) {
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printk("pkt3 size differs from fragment sizes, "
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"pkt3 size %d frags size %d calc total %d\n",
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sizeof(pkt3), net_buf_frags_len(buf->frags),
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total + sizeof(struct net_ipv6_hdr));
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return;
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}
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chksum = ntohs(~net_calc_chksum(buf, IPPROTO_ICMPV6));
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if (chksum != orig_chksum) {
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printk("Invalid chksum 0x%x in pkt3, should be 0x%x\n",
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chksum, orig_chksum);
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return;
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}
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net_nbuf_unref(buf);
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printk("Network utils checks passed\n");
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}
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