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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2022 Linaro
*
* (C) Copyright 2022
* Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
*/
#include <common.h>
#include <command.h>
#include <dm.h>
#include <env.h>
#include <fdtdec.h>
#include <log.h>
#include <malloc.h>
#include <net.h>
#include <net/tcp.h>
#include <net/wget.h>
#include <asm/eth.h>
#include <dm/test.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#include <test/lib.h>
#include <test/test.h>
#include <test/ut.h>
#define SHIFT_TO_TCPHDRLEN_FIELD(x) ((x) << 4)
#define LEN_B_TO_DW(x) ((x) >> 2)
static int sb_arp_handler(struct udevice *dev, void *packet,
unsigned int len)
{
struct eth_sandbox_priv *priv = dev_get_priv(dev);
struct arp_hdr *arp = packet + ETHER_HDR_SIZE;
int ret = 0;
if (ntohs(arp->ar_op) == ARPOP_REQUEST) {
priv->fake_host_ipaddr = net_read_ip(&arp->ar_spa);
ret = sandbox_eth_recv_arp_req(dev);
if (ret)
return ret;
ret = sandbox_eth_arp_req_to_reply(dev, packet, len);
return ret;
}
return -EPROTONOSUPPORT;
}
static int sb_syn_handler(struct udevice *dev, void *packet,
unsigned int len)
{
struct eth_sandbox_priv *priv = dev_get_priv(dev);
struct ethernet_hdr *eth = packet;
struct ip_tcp_hdr *tcp = packet + ETHER_HDR_SIZE;
struct ethernet_hdr *eth_send;
struct ip_tcp_hdr *tcp_send;
/* Don't allow the buffer to overrun */
if (priv->recv_packets >= PKTBUFSRX)
return 0;
eth_send = (void *)priv->recv_packet_buffer[priv->recv_packets];
memcpy(eth_send->et_dest, eth->et_src, ARP_HLEN);
memcpy(eth_send->et_src, priv->fake_host_hwaddr, ARP_HLEN);
eth_send->et_protlen = htons(PROT_IP);
tcp_send = (void *)eth_send + ETHER_HDR_SIZE;
tcp_send->tcp_src = tcp->tcp_dst;
tcp_send->tcp_dst = tcp->tcp_src;
tcp_send->tcp_seq = htonl(0);
tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1);
tcp_send->tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE));
tcp_send->tcp_flags = TCP_SYN | TCP_ACK;
tcp_send->tcp_win = htons(PKTBUFSRX * TCP_MSS >> TCP_SCALE);
tcp_send->tcp_xsum = 0;
tcp_send->tcp_ugr = 0;
tcp_send->tcp_xsum = tcp_set_pseudo_header((uchar *)tcp_send,
tcp->ip_src,
tcp->ip_dst,
TCP_HDR_SIZE,
IP_TCP_HDR_SIZE);
net_set_ip_header((uchar *)tcp_send,
tcp->ip_src,
tcp->ip_dst,
IP_TCP_HDR_SIZE,
IPPROTO_TCP);
priv->recv_packet_length[priv->recv_packets] =
ETHER_HDR_SIZE + IP_TCP_HDR_SIZE;
++priv->recv_packets;
return 0;
}
static int sb_ack_handler(struct udevice *dev, void *packet,
unsigned int len)
{
struct eth_sandbox_priv *priv = dev_get_priv(dev);
struct ethernet_hdr *eth = packet;
struct ip_tcp_hdr *tcp = packet + ETHER_HDR_SIZE;
struct ethernet_hdr *eth_send;
struct ip_tcp_hdr *tcp_send;
void *data;
int pkt_len;
int payload_len = 0;
const char *payload1 = "HTTP/1.1 200 OK\r\n"
"Content-Length: 30\r\n\r\n\r\n"
"<html><body>Hi</body></html>\r\n";
/* Don't allow the buffer to overrun */
if (priv->recv_packets >= PKTBUFSRX)
return 0;
eth_send = (void *)priv->recv_packet_buffer[priv->recv_packets];
memcpy(eth_send->et_dest, eth->et_src, ARP_HLEN);
memcpy(eth_send->et_src, priv->fake_host_hwaddr, ARP_HLEN);
eth_send->et_protlen = htons(PROT_IP);
tcp_send = (void *)eth_send + ETHER_HDR_SIZE;
tcp_send->tcp_src = tcp->tcp_dst;
tcp_send->tcp_dst = tcp->tcp_src;
data = (void *)tcp_send + IP_TCP_HDR_SIZE;
if (ntohl(tcp->tcp_seq) == 1 && ntohl(tcp->tcp_ack) == 1) {
tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack));
tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1);
payload_len = strlen(payload1);
memcpy(data, payload1, payload_len);
tcp_send->tcp_flags = TCP_ACK;
} else if (ntohl(tcp->tcp_seq) == 2) {
tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack));
tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1);
payload_len = 0;
tcp_send->tcp_flags = TCP_ACK | TCP_FIN;
}
tcp_send->tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE));
tcp_send->tcp_win = htons(PKTBUFSRX * TCP_MSS >> TCP_SCALE);
tcp_send->tcp_xsum = 0;
tcp_send->tcp_ugr = 0;
pkt_len = IP_TCP_HDR_SIZE + payload_len;
tcp_send->tcp_xsum = tcp_set_pseudo_header((uchar *)tcp_send,
tcp->ip_src,
tcp->ip_dst,
pkt_len - IP_HDR_SIZE,
pkt_len);
net_set_ip_header((uchar *)tcp_send,
tcp->ip_src,
tcp->ip_dst,
pkt_len,
IPPROTO_TCP);
if (ntohl(tcp->tcp_seq) == 1 || ntohl(tcp->tcp_seq) == 2) {
priv->recv_packet_length[priv->recv_packets] =
ETHER_HDR_SIZE + IP_TCP_HDR_SIZE + payload_len;
++priv->recv_packets;
}
return 0;
}
static int sb_http_handler(struct udevice *dev, void *packet,
unsigned int len)
{
struct ethernet_hdr *eth = packet;
struct ip_hdr *ip;
struct ip_tcp_hdr *tcp;
if (ntohs(eth->et_protlen) == PROT_ARP) {
return sb_arp_handler(dev, packet, len);
} else if (ntohs(eth->et_protlen) == PROT_IP) {
ip = packet + ETHER_HDR_SIZE;
if (ip->ip_p == IPPROTO_TCP) {
tcp = packet + ETHER_HDR_SIZE;
if (tcp->tcp_flags == TCP_SYN)
return sb_syn_handler(dev, packet, len);
else if (tcp->tcp_flags & TCP_ACK && !(tcp->tcp_flags & TCP_SYN))
return sb_ack_handler(dev, packet, len);
return 0;
}
return -EPROTONOSUPPORT;
}
return -EPROTONOSUPPORT;
}
static int net_test_wget(struct unit_test_state *uts)
{
sandbox_eth_set_tx_handler(0, sb_http_handler);
sandbox_eth_set_priv(0, uts);
env_set("ethact", "eth@10002000");
env_set("ethrotate", "no");
env_set("loadaddr", "0x20000");
ut_assertok(run_command("wget ${loadaddr} 1.1.2.2:/index.html", 0));
sandbox_eth_set_tx_handler(0, NULL);
ut_assertok(console_record_reset_enable());
run_command("md5sum ${loadaddr} ${filesize}", 0);
ut_assert_nextline("md5 for 00020000 ... 0002001f ==> 234af48e94b0085060249ecb5942ab57");
ut_assertok(ut_check_console_end(uts));
return 0;
}
LIB_TEST(net_test_wget, 0);
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