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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 | // SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2022 Linaro * * (C) Copyright 2022 * Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org> */ #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) #define GET_TCP_HDR_LEN_IN_BYTES(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); priv->irs = ntohl(tcp->tcp_seq); priv->iss = ~priv->irs; /* just to differ from irs */ 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(priv->iss); tcp_send->tcp_ack = htonl(priv->irs + 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; u32 tcp_seq, tcp_ack; int tcp_data_len; const char *payload1 = /* response status line */ "HTTP/1.1 200 OK\r\n" /* response header fields */ "Date: Mon, 23 Dec 2024 05:18:23 GMT\r\n" "Server: Apache/2.4.62 (Debian)\r\n" "Last-Modified: Mon, 23 Dec 2024 05:04:50 GMT\r\n" "ETag: \"1d-629e8efb09e7b\"\r\n" "Accept-Ranges: bytes\r\n" "Content-Length: 29\r\n" "Connection: close\r\n" "Content-Type: text/html\r\n" /* response header fields end marker */ "\r\n" /* file data (for HTTP GET requests) */ "<html><body>Hi</body></html>\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; tcp_seq = ntohl(tcp->tcp_seq) - priv->irs; tcp_ack = ntohl(tcp->tcp_ack) - priv->iss; tcp_data_len = len - ETHER_HDR_SIZE - IP_HDR_SIZE - GET_TCP_HDR_LEN_IN_BYTES(tcp->tcp_hlen); if (tcp->tcp_flags & TCP_FIN) tcp_data_len++; tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack)); tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + tcp_data_len); if (tcp_seq == 1 && tcp_ack == 1) { if (tcp_data_len == 0) { /* no data, wait for GET/HEAD request */ return -1; } /* reply to GET/HEAD request */ payload_len = strlen(payload1); memcpy(data, payload1, payload_len); tcp_send->tcp_flags = TCP_ACK; } else if (tcp_ack == 1 + strlen(payload1)) { payload_len = 0; tcp_send->tcp_flags = TCP_ACK | TCP_FIN; } else if (tcp_ack == 2 + strlen(payload1)) { payload_len = 0; tcp_send->tcp_flags = TCP_ACK; } 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); 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)); ut_assert_nextline_empty(); ut_assert_nextline("Packets received 5, Transfer Successful"); ut_assert_nextline("Bytes transferred = 29 (1d hex)"); sandbox_eth_set_tx_handler(0, NULL); run_command("md5sum ${loadaddr} ${filesize}", 0); ut_assert_nextline("md5 for 00020000 ... 0002001c ==> 847d5e7320a27462e90bc1ed75eb8cd8"); ut_assert_console_end(); return 0; } LIB_TEST(net_test_wget, UTF_CONSOLE); |