159f7dbbb1
Move the network buffer header file from zephyr/net/buf.h to zephyr/net_buf.h as the implementation now lives outside of the networking subsystem. Add (deprecated) zephyr/net/buf.h header to maintain compatibility with old file path. Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
557 lines
13 KiB
C
557 lines
13 KiB
C
/* main.c - Application main entry point */
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/*
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* Copyright (c) 2019 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define NET_LOG_LEVEL CONFIG_NET_PPP_LOG_LEVEL
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(net_test, NET_LOG_LEVEL);
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#include <zephyr/types.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <string.h>
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#include <errno.h>
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#include <zephyr/sys/printk.h>
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#include <zephyr/sys/crc.h>
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#include <zephyr/ztest.h>
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#include <zephyr/net/ethernet.h>
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#include <zephyr/net/dummy.h>
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#include <zephyr/net_buf.h>
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#include <zephyr/net/net_ip.h>
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#include <zephyr/net/net_if.h>
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#define NET_LOG_ENABLED 1
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#include "net_private.h"
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typedef enum net_verdict (*ppp_l2_callback_t)(struct net_if *iface,
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struct net_pkt *pkt);
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void ppp_l2_register_pkt_cb(ppp_l2_callback_t cb); /* found in ppp_l2.c */
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void ppp_driver_feed_data(uint8_t *data, int data_len);
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static struct net_if *net_iface;
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static bool test_failed;
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static bool test_started;
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static struct k_sem wait_data;
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#define WAIT_TIME 250
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#define WAIT_TIME_LONG K_SECONDS(1)
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/* If we receive this wire format PPP data, */
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static uint8_t ppp_recv_data1[] = {
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0x7e, 0xff, 0x7d, 0x23, 0xc0, 0x21, 0x7d, 0x21,
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0x7d, 0x21, 0x7d, 0x20, 0x7d, 0x34, 0x7d, 0x22,
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0x7d, 0x26, 0x7d, 0x20, 0x7d, 0x20, 0x7d, 0x20,
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0x7d, 0x20, 0x7d, 0x25, 0x7d, 0x26, 0x5d, 0x58,
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0xcf, 0x41, 0x7d, 0x27, 0x7d, 0x22, 0x7d, 0x28,
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0x7d, 0x22, 0xc4, 0xc9, 0x7e,
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};
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/* then we should see this FCS checked PPP data */
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static uint8_t ppp_expect_data1[] = {
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0xc0, 0x21, 0x01, 0x01, 0x00, 0x14, 0x02, 0x06,
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0x00, 0x00, 0x00, 0x00, 0x05, 0x06, 0x5d, 0x58,
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0xcf, 0x41, 0x07, 0x02, 0x08, 0x02,
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};
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static uint8_t ppp_recv_data2[] = {
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0x7e, 0xff, 0x7d, 0x23, 0xc0, 0x21, 0x7d, 0x21,
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0x7d, 0x21, 0x7d, 0x20, 0x7d, 0x34, 0x7d, 0x22,
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0x7d, 0x26, 0x7d, 0x20, 0x7d, 0x20, 0x7d, 0x20,
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0x7d, 0x20, 0x7d, 0x25, 0x7d, 0x26, 0x5d, 0x58,
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0xcf, 0x41, 0x7d, 0x27, 0x7d, 0x22, 0x7d, 0x28,
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0x7d, 0x22, 0xc4, 0xc9,
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/* Second partial msg */
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0x7e, 0xff, 0x7d, 0x23, 0xc0, 0x21, 0x7d, 0x21,
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0x7d, 0x21, 0x7d, 0x20, 0x7d, 0x34, 0x7d, 0x22,
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};
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/* This is HDLC encoded PPP message */
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static uint8_t ppp_recv_data3[] = {
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0x7e, 0xff, 0x7d, 0x23, 0xc0, 0x21, 0x7d, 0x22,
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0x7d, 0x21, 0x7d, 0x20, 0x7d, 0x24, 0x1c, 0x90, 0x7e
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};
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static uint8_t ppp_expect_data3[] = {
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0xc0, 0x21, 0x02, 0x01, 0x00, 0x04,
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};
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static uint8_t ppp_recv_data4[] = {
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/* There is FCS error in this packet */
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0x7e, 0xff, 0x7d, 0x5d, 0xe4, 0x7d, 0x23, 0xc0,
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0x21, 0x7d, 0x22, 0x7d, 0x21, 0x7d, 0x20, 0x7d,
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0x24, 0x7d, 0x3c, 0x90, 0x7e,
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};
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static uint8_t ppp_expect_data4[] = {
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0xff, 0x7d, 0xe4, 0x03, 0xc0, 0x21, 0x02, 0x01,
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0x00, 0x04, 0x1c, 0x90,
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};
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static uint8_t ppp_recv_data5[] = {
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/* Multiple valid packets here */
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/* 1st */
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0x7e, 0xff, 0x7d, 0x23, 0xc0, 0x21, 0x7d, 0x21,
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0x7d, 0x23, 0x7d, 0x20, 0x7d, 0x34, 0x7d, 0x22,
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0x7d, 0x26, 0x7d, 0x20, 0x7d, 0x20, 0x7d, 0x20,
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0x7d, 0x20, 0x7d, 0x25, 0x7d, 0x26, 0x66, 0x7d,
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0x26, 0xbe, 0x70, 0x7d, 0x27, 0x7d, 0x22, 0x7d,
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0x28, 0x7d, 0x22, 0xf2, 0x47, 0x7e,
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/* 2nd */
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0x7e, 0xff, 0x7d, 0x23, 0xc0, 0x21, 0x7d, 0x22,
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0x7d, 0x21, 0x7d, 0x20, 0x7d, 0x24, 0x7d, 0x3c,
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0x90, 0x7e,
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/* 3rd */
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0xff, 0x7d, 0x23, 0x80, 0xfd, 0x7d, 0x21, 0x7d,
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0x22, 0x7d, 0x20, 0x7d, 0x2f, 0x7d, 0x3a, 0x7d,
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0x24, 0x78, 0x7d, 0x20, 0x7d, 0x38, 0x7d, 0x24,
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0x78, 0x7d, 0x20, 0x7d, 0x35, 0x7d, 0x23, 0x2f,
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0x8f, 0x4e, 0x7e,
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};
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static uint8_t ppp_expect_data5[] = {
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0xc0, 0x21, 0x01, 0x03, 0x00, 0x14, 0x02, 0x06,
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0x00, 0x00, 0x00, 0x00, 0x05, 0x06, 0x66, 0x06,
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0xbe, 0x70, 0x07, 0x02, 0x08, 0x02,
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};
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static uint8_t ppp_recv_data6[] = {
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0x7e, 0xff, 0x7d, 0x23, 0xc0, 0x21, 0x7d, 0x22,
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0x7d, 0x21, 0x7d, 0x20, 0x7d, 0x24, 0x7d, 0x3c,
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0x90, 0x7e,
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};
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static uint8_t ppp_expect_data6[] = {
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0xc0, 0x21, 0x02, 0x01, 0x00, 0x04,
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};
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static uint8_t ppp_recv_data7[] = {
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0x7e, 0xff, 0x7d, 0x23, 0x80, 0x21, 0x7d, 0x22,
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0x7d, 0x22, 0x7d, 0x20, 0x7d, 0x2a, 0x7d, 0x23,
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0x7d, 0x26, 0xc0, 0x7d, 0x20, 0x7d, 0x22, 0x7d,
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0x22, 0x06, 0xa1, 0x7e,
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};
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static uint8_t ppp_expect_data7[] = {
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0x80, 0x21, 0x02, 0x02, 0x00, 0x0a, 0x03, 0x06,
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0xc0, 0x00, 0x02, 0x02,
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};
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static uint8_t ppp_recv_data8[] = {
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0x7e, 0xff, 0x7d, 0x23, 0x00, 0x57, 0x60, 0x7d,
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0x20, 0x7d, 0x20, 0x7d, 0x20, 0x7d, 0x20, 0x7d,
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0x2c, 0x3a, 0x40, 0xfe, 0x80, 0x7d, 0x20, 0x7d,
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0x20, 0x7d, 0x20, 0x7d, 0x20, 0x7d, 0x20, 0x7d,
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0x20, 0x7d, 0x20, 0x7d, 0x20, 0x5e, 0xff, 0xfe,
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0x7d, 0x20, 0x53, 0x44, 0xfe, 0x80, 0x7d, 0x20,
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0x7d, 0x20, 0x7d, 0x20, 0x7d, 0x20, 0x7d, 0x20,
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0x7d, 0x20, 0xa1, 0x41, 0x6d, 0x45, 0xbf, 0x28,
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0x7d, 0x25, 0xd1, 0x80, 0x7d, 0x20, 0x7d, 0x28,
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0x6c, 0x7d, 0x5e, 0x32, 0x7d, 0x20, 0x7d, 0x22,
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0x5b, 0x2c, 0x7d, 0x3d, 0x25, 0x20, 0x11, 0x7e,
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};
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static uint8_t ppp_expect_data8[] = {
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0x60, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x3a, 0x40,
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0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x5e, 0xff, 0xfe, 0x00, 0x53, 0x44,
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0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xa1, 0x41, 0x6d, 0x45, 0xbf, 0x28, 0x05, 0xd1,
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0x80, 0x00, 0x08, 0x6c, 0x7e, 0x32, 0x00, 0x02,
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0x5b, 0x2c, 0x1d, 0x25,
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};
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static uint8_t *receiving, *expecting;
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static enum net_verdict ppp_l2_recv(struct net_if *iface, struct net_pkt *pkt)
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{
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if (!pkt->buffer) {
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NET_DBG("No data to recv!");
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return NET_DROP;
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}
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if (test_started) {
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struct net_buf *buf = pkt->buffer;
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int pos = 0;
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while (buf) {
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if (memcmp(expecting + pos, buf->data, buf->len)) {
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LOG_HEXDUMP_DBG(expecting + pos,
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buf->len,
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"expecting");
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LOG_HEXDUMP_DBG(buf->data, buf->len,
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"received");
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test_failed = true;
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break;
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}
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pos += buf->len;
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buf = buf->frags;
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}
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}
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if (test_failed) {
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net_pkt_hexdump(pkt, "received");
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}
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k_sem_give(&wait_data);
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return NET_DROP;
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}
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static void test_iface_setup(void)
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{
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net_iface = net_if_get_first_by_type(&NET_L2_GET_NAME(PPP));
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zassert_not_null(net_iface, "PPP interface not found!");
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/* The semaphore is there to wait the data to be received. */
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k_sem_init(&wait_data, 0, UINT_MAX);
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ppp_l2_register_pkt_cb(ppp_l2_recv);
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net_if_up(net_iface);
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test_failed = false;
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test_started = true;
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}
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static bool send_iface(struct net_if *iface,
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uint8_t *recv, size_t recv_len,
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uint8_t *expect, size_t expect_len)
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{
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receiving = recv;
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expecting = expect;
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test_failed = false;
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NET_DBG("Feeding %zd bytes data", recv_len);
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/* ToDo: Check the expected buffer value */
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ppp_driver_feed_data(recv, recv_len);
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zassert_false(test_failed, "Test failed");
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return true;
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}
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static void test_send_ppp_pkt_with_escapes(void)
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{
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bool ret;
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NET_DBG("Sending data to iface %p", net_iface);
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ret = send_iface(net_iface, ppp_recv_data1, sizeof(ppp_recv_data1),
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ppp_expect_data1, sizeof(ppp_expect_data1));
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zassert_true(ret, "iface");
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}
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static void test_send_ppp_pkt_with_full_and_partial(void)
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{
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bool ret;
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NET_DBG("Sending data to iface %p", net_iface);
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ret = send_iface(net_iface, ppp_recv_data2, sizeof(ppp_recv_data2),
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ppp_expect_data1, sizeof(ppp_expect_data1));
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zassert_true(ret, "iface");
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}
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static bool check_fcs(struct net_pkt *pkt, uint16_t *fcs)
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{
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struct net_buf *buf;
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uint16_t crc;
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buf = pkt->buffer;
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if (!buf) {
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return false;
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}
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crc = crc16_ccitt(0xffff, buf->data, buf->len);
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buf = buf->frags;
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while (buf) {
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crc = crc16_ccitt(crc, buf->data, buf->len);
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buf = buf->frags;
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}
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*fcs = crc;
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if (crc != 0xf0b8) {
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return false;
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}
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return true;
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}
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static uint8_t unescape(uint8_t **ptr)
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{
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uint8_t *pos = *ptr;
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uint8_t val;
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if (*pos == 0x7d) {
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pos++;
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val = (*pos) ^ 0x20;
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*ptr += 2;
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return val;
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}
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*ptr += 1;
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return *pos;
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}
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static void ppp_verify_fcs(uint8_t *buf, int len)
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{
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struct net_pkt *pkt;
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uint16_t addr_and_ctrl;
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uint16_t fcs = 0;
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uint8_t *ptr;
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bool ret;
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pkt = net_pkt_alloc_with_buffer(net_iface, len, AF_UNSPEC, 0, K_NO_WAIT);
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zassert_not_null(pkt, "Cannot create pkt");
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ptr = buf;
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while (ptr < &buf[len]) {
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net_pkt_write_u8(pkt, unescape(&ptr));
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}
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/* Remove sync byte 0x7e */
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(void)net_buf_pull_u8(pkt->buffer);
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net_pkt_cursor_init(pkt);
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net_pkt_read_be16(pkt, &addr_and_ctrl);
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/* Currently we do not support compressed Address and Control
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* fields so they must always be present.
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*/
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if (addr_and_ctrl != (0xff << 8 | 0x03)) {
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zassert_true(false, "Invalid address / control bytes");
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}
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/* Skip sync byte (1) */
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net_buf_frag_last(pkt->buffer)->len -= 1;
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ret = check_fcs(pkt, &fcs);
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zassert_true(ret, "FCS calc failed, expecting 0x%x got 0x%x",
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0xf0b8, fcs);
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net_pkt_unref(pkt);
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}
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static void test_ppp_verify_fcs_1(void)
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{
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ppp_verify_fcs(ppp_recv_data1, sizeof(ppp_recv_data1));
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}
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static bool calc_fcs(struct net_pkt *pkt, uint16_t *fcs)
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{
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struct net_buf *buf;
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uint16_t crc;
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buf = pkt->buffer;
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if (!buf) {
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return false;
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}
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crc = crc16_ccitt(0xffff, buf->data, buf->len);
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buf = buf->frags;
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while (buf) {
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crc = crc16_ccitt(crc, buf->data, buf->len);
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buf = buf->frags;
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}
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crc ^= 0xffff;
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*fcs = crc;
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return true;
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}
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static void ppp_calc_fcs(uint8_t *buf, int len)
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{
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struct net_pkt *pkt;
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uint16_t addr_and_ctrl;
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uint16_t pkt_fcs, fcs = 0;
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uint8_t *ptr;
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bool ret;
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pkt = net_pkt_alloc_with_buffer(net_iface, len, AF_UNSPEC, 0, K_NO_WAIT);
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zassert_not_null(pkt, "Cannot create pkt");
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ptr = buf;
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while (ptr < &buf[len]) {
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net_pkt_write_u8(pkt, unescape(&ptr));
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}
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/* Remove sync byte 0x7e */
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(void)net_buf_pull_u8(pkt->buffer);
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net_pkt_cursor_init(pkt);
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net_pkt_read_be16(pkt, &addr_and_ctrl);
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/* Currently we do not support compressed Address and Control
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* fields so they must always be present.
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*/
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if (addr_and_ctrl != (0xff << 8 | 0x03)) {
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zassert_true(false, "Invalid address / control bytes");
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}
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len = net_pkt_get_len(pkt);
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net_pkt_set_overwrite(pkt, true);
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net_pkt_skip(pkt, len - sizeof(uint16_t) - (2 + 1));
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net_pkt_read_le16(pkt, &pkt_fcs);
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/* Skip FCS and sync bytes (2 + 1) */
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net_buf_frag_last(pkt->buffer)->len -= 2 + 1;
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ret = calc_fcs(pkt, &fcs);
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zassert_true(ret, "FCS calc failed");
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zassert_equal(pkt_fcs, fcs, "FCS calc failed, expecting 0x%x got 0x%x",
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pkt_fcs, fcs);
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net_pkt_unref(pkt);
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}
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static void test_ppp_calc_fcs_1(void)
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{
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|
ppp_calc_fcs(ppp_recv_data1, sizeof(ppp_recv_data1));
|
|
}
|
|
|
|
static void test_ppp_verify_fcs_3(void)
|
|
{
|
|
ppp_verify_fcs(ppp_recv_data3, sizeof(ppp_recv_data3));
|
|
}
|
|
|
|
static void test_send_ppp_3(void)
|
|
{
|
|
bool ret;
|
|
|
|
NET_DBG("Sending data to iface %p", net_iface);
|
|
|
|
ret = send_iface(net_iface, ppp_recv_data3, sizeof(ppp_recv_data3),
|
|
ppp_expect_data3, sizeof(ppp_expect_data3));
|
|
|
|
zassert_true(ret, "iface");
|
|
|
|
if (k_sem_take(&wait_data, WAIT_TIME_LONG)) {
|
|
zassert_true(false, "Timeout, packet not received");
|
|
}
|
|
}
|
|
|
|
static void test_send_ppp_4(void)
|
|
{
|
|
bool ret;
|
|
|
|
NET_DBG("Sending data to iface %p", net_iface);
|
|
|
|
ret = send_iface(net_iface, ppp_recv_data4, sizeof(ppp_recv_data4),
|
|
ppp_expect_data4, sizeof(ppp_expect_data4));
|
|
|
|
zassert_true(ret, "iface");
|
|
|
|
if (k_sem_take(&wait_data, WAIT_TIME_LONG)) {
|
|
zassert_true(false, "Timeout, packet not received");
|
|
}
|
|
}
|
|
|
|
static void test_send_ppp_5(void)
|
|
{
|
|
bool ret;
|
|
|
|
NET_DBG("Sending data to iface %p", net_iface);
|
|
|
|
ret = send_iface(net_iface, ppp_recv_data5, sizeof(ppp_recv_data5),
|
|
ppp_expect_data5, sizeof(ppp_expect_data5));
|
|
|
|
zassert_true(ret, "iface");
|
|
|
|
if (k_sem_take(&wait_data, WAIT_TIME_LONG)) {
|
|
zassert_true(false, "Timeout, packet not received");
|
|
}
|
|
}
|
|
|
|
static void test_send_ppp_6(void)
|
|
{
|
|
bool ret;
|
|
|
|
NET_DBG("Sending data to iface %p", net_iface);
|
|
|
|
ret = send_iface(net_iface, ppp_recv_data6, sizeof(ppp_recv_data6),
|
|
ppp_expect_data6, sizeof(ppp_expect_data6));
|
|
|
|
zassert_true(ret, "iface");
|
|
|
|
if (k_sem_take(&wait_data, WAIT_TIME_LONG)) {
|
|
zassert_true(false, "Timeout, packet not received");
|
|
}
|
|
}
|
|
|
|
static void test_send_ppp_7(void)
|
|
{
|
|
bool ret;
|
|
|
|
NET_DBG("Sending data to iface %p", net_iface);
|
|
|
|
ret = send_iface(net_iface, ppp_recv_data7, sizeof(ppp_recv_data7),
|
|
ppp_expect_data7, sizeof(ppp_expect_data7));
|
|
|
|
zassert_true(ret, "iface");
|
|
|
|
if (k_sem_take(&wait_data, WAIT_TIME_LONG)) {
|
|
zassert_true(false, "Timeout, packet not received");
|
|
}
|
|
}
|
|
|
|
static void test_send_ppp_8(void)
|
|
{
|
|
bool ret;
|
|
|
|
NET_DBG("Sending data to iface %p", net_iface);
|
|
|
|
ret = send_iface(net_iface, ppp_recv_data8, sizeof(ppp_recv_data8),
|
|
ppp_expect_data8, sizeof(ppp_expect_data8));
|
|
|
|
zassert_true(ret, "iface");
|
|
|
|
if (k_sem_take(&wait_data, WAIT_TIME_LONG)) {
|
|
zassert_true(false, "Timeout, packet not received");
|
|
}
|
|
}
|
|
|
|
ZTEST(net_ppp_test_suite, test_net_ppp)
|
|
{
|
|
test_iface_setup();
|
|
test_send_ppp_pkt_with_escapes();
|
|
test_send_ppp_pkt_with_full_and_partial();
|
|
test_ppp_verify_fcs_1();
|
|
test_ppp_calc_fcs_1();
|
|
test_ppp_verify_fcs_3();
|
|
test_send_ppp_3();
|
|
test_send_ppp_4();
|
|
test_send_ppp_5();
|
|
test_send_ppp_6();
|
|
test_send_ppp_7();
|
|
test_send_ppp_8();
|
|
}
|
|
|
|
ZTEST_SUITE(net_ppp_test_suite, NULL, NULL, NULL, NULL, NULL);
|