From patchwork Thu Apr 21 16:54:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ying-Chun Liu X-Patchwork-Id: 564412 Delivered-To: patch@linaro.org Received: by 2002:a05:7000:6886:0:0:0:0 with SMTP id m6csp608578map; Thu, 21 Apr 2022 09:54:56 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzcs3jBCloGLC4YLtfLcM5sw4VS+n3HnfoCHnCDduiJx6mWhBmSYOFZ3RQawWE4xaa+BOAU X-Received: by 2002:aa7:d0c9:0:b0:41d:9137:fcea with SMTP id u9-20020aa7d0c9000000b0041d9137fceamr543858edo.110.1650560096520; Thu, 21 Apr 2022 09:54:56 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1650560096; cv=none; d=google.com; s=arc-20160816; b=YpK5hKT6mBFgc029fbx2Y8MA2W7ALDJPosQazYKkgrJfrC4VtemRgvwrtVfS0uc5LH Oe4PqpgTBxN6oqDB5b2tLcA1g85Ds7A/EFsQ5lH3+Y8I8lRgNMH+LqIMFgHzxq6CNdKJ iZayQ28uAULyru5y1eAWKkl0KCzlAdjl6wz/4ST408aA59YIqPKTlk/lVPgAWRZz/Bz1 bOxiJ0TUH3ZmsF0lnBR5mCulX/s2QrmUNbYmJP3rlpN0w1dIFWckMIrB80WfKo0qMi/T tQEJKAmS1Z/v/ezHjTrK1I6YUjlavhDsoywBBUQnnAR8Jx8GunAYRWxjAvMxGuxSHhag XaCA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=IE7xCQfchfGMXjN/bAN4fTRw+6QNRFIT4K4AO56iV9Q=; b=n7MD5XWPQbyCT/T0rzBQzbQDFx0JHoPLwWy1eiI8uQXmPgd5rZ0J/MhhDTL80LbM/J tnX+TjGwLpheBHzs47Shc77hb0C+EXfjOPvkiYtlIZ3NplmonLHzvm11lFn5getTamtA JKUevc9iQKQvklx4jhlzyh7qlYyutoIh9gZvyJEzWIjojJwzDiDspjIHO4LElhseZP5n u3I4kkI4KR3pyUaK+nYiORsMkhsTZBhtsIeLH9OsYUwvNr3CK2hIPeAlzV6H2eQVeX5j nYIQ2lA3mvbMZ01Mzed7KevF3m6gaxnFJqpa5YQilbMEo5m/nJgHpbxMi4QmAd095oGj W63w== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=TJmnY6DG; spf=pass (google.com: domain of u-boot-bounces@lists.denx.de designates 2a01:238:438b:c500:173d:9f52:ddab:ee01 as permitted sender) smtp.mailfrom=u-boot-bounces@lists.denx.de; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from phobos.denx.de (phobos.denx.de. [2a01:238:438b:c500:173d:9f52:ddab:ee01]) by mx.google.com with ESMTPS id g13-20020a056402090d00b0041d983f82a3si4888002edz.46.2022.04.21.09.54.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Apr 2022 09:54:56 -0700 (PDT) Received-SPF: pass (google.com: domain of u-boot-bounces@lists.denx.de designates 2a01:238:438b:c500:173d:9f52:ddab:ee01 as permitted sender) client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=TJmnY6DG; spf=pass (google.com: domain of u-boot-bounces@lists.denx.de designates 2a01:238:438b:c500:173d:9f52:ddab:ee01 as permitted sender) smtp.mailfrom=u-boot-bounces@lists.denx.de; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id C876783EEE; Thu, 21 Apr 2022 18:54:46 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="TJmnY6DG"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 6BA1983EEC; Thu, 21 Apr 2022 18:54:41 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id B5FAF83EDA for ; Thu, 21 Apr 2022 18:54:36 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=grandpaul@gmail.com Received: by mail-pf1-x431.google.com with SMTP id z16so5535188pfh.3 for ; Thu, 21 Apr 2022 09:54:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=IE7xCQfchfGMXjN/bAN4fTRw+6QNRFIT4K4AO56iV9Q=; b=TJmnY6DGQr+c60fmPF2Gluxjw/qvh+i+SofH1u/LJnuxA/6cgI1Omu6aym55qM5HYx GfHsOd5xwymNW1s6fosTh62FrxwyeeZKHNbajaCNubihxPXrbQq8x3s4xkGHr0hm7/j/ vWjANel8CZwkJx+0oGv3EakMlTnz+nHwfuULA8jPOJ/i5hzWhK9QaKwtf2dHZZBuh4z5 8VpE4OxcsKhHSf6/6uQcEbAJ9OgpR3veWclptBpuVmVI52aMkF3og8SzjXaQW4tr2UOW RD2+dsRjp8fbmdTDqsJummPgFzjnqXdo63x/RaSowodGfDWLJJTDY0T5HgZ2/EecAnBc 6QsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=IE7xCQfchfGMXjN/bAN4fTRw+6QNRFIT4K4AO56iV9Q=; b=QjvSBY/kYyuKKu1s2kwdhW5ihy+FMaIWLoiTN+NuZ/0WYwXQKoy/13GXr2l31Seokf 5lSsWXee+hs5+JxqtBgrdVy5QoaN7Mq6u6ZI0ubWFJrgMEy2qllWzcYuSoT7iV/7SBx8 SIp4XH+nkf7QG+IzULWbiUsaRKb37lRXZGR0bIfUbrIXECsB7oXHb+utmz8kRTcLLOdF czQTyOMnoj+xh3cxa7+ggFK+Q8fOB2XBtSArr/YcaAFqq36UW8yIVpz6ZUqZKuQxs5IB /6p8eiBXx1Oj7aJ4tUCZ2EgwdxWzfiKuC1RM9nKa6MPkyVHVD0+EudXxN0MDYGCV7fdW wmtg== X-Gm-Message-State: AOAM530wfEXYscBZoUgejLztLS8WAXNsaSVnVfCkxcwX7ccNOWOSlI5f QyxBWcgYEEALFwAtqhyNjl+f5KtQW9cIzQ== X-Received: by 2002:a05:6a00:d4f:b0:50a:3ea9:64fc with SMTP id n15-20020a056a000d4f00b0050a3ea964fcmr397164pfv.41.1650560074492; Thu, 21 Apr 2022 09:54:34 -0700 (PDT) Received: from localhost ([111.184.129.17]) by smtp.gmail.com with ESMTPSA id r31-20020a63205f000000b0039db0514016sm23322553pgm.29.2022.04.21.09.54.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Apr 2022 09:54:34 -0700 (PDT) From: Ying-Chun Liu To: u-boot@lists.denx.de Cc: Grant.Likely@arm.com, "Ying-Chun Liu (PaulLiu)" , Duncan Hare , Christian Gmeiner , Joe Hershberger , Ramon Fried Subject: [PATCH v14 2/2] net: Add wget application Date: Fri, 22 Apr 2022 00:54:23 +0800 Message-Id: <20220421165424.168274-3-grandpaul@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220421165424.168274-1-grandpaul@gmail.com> References: <20220421165424.168274-1-grandpaul@gmail.com> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.5 at phobos.denx.de X-Virus-Status: Clean From: "Ying-Chun Liu (PaulLiu)" This commit adds a simple wget command that can download files from http server. Signed-off-by: Duncan Hare Signed-off-by: Ying-Chun Liu (PaulLiu) Cc: Christian Gmeiner Cc: Joe Hershberger Cc: Ramon Fried --- v13: Fix some issues which is reviewed by Christian --- cmd/Kconfig | 7 + cmd/net.c | 13 ++ include/net.h | 2 +- include/net/wget.h | 19 ++ net/Makefile | 1 + net/net.c | 6 + net/wget.c | 436 +++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 483 insertions(+), 1 deletion(-) create mode 100644 include/net/wget.h create mode 100644 net/wget.c diff --git a/cmd/Kconfig b/cmd/Kconfig index d3abe3a06b..6eff068feb 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1667,6 +1667,13 @@ config NFS_TIMEOUT "ERROR: Cannot umount" in nfs command, try longer timeout such as 10000. +config CMD_WGET + bool "wget" + select TCP + help + Download kernel, or other files, from a web server over TCP. + Fast file transfer over networks with latenc + config CMD_MII bool "mii" imply CMD_MDIO diff --git a/cmd/net.c b/cmd/net.c index 3619c843d8..60fd785061 100644 --- a/cmd/net.c +++ b/cmd/net.c @@ -124,6 +124,19 @@ U_BOOT_CMD( ); #endif +#if defined(CONFIG_CMD_WGET) +static int do_wget(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]) +{ + return netboot_common(WGET, cmdtp, argc, argv); +} + +U_BOOT_CMD( + wget, 3, 1, do_wget, + "boot image via network using HTTP protocol", + "[loadAddress] [[hostIPaddr:]path and image name]" +); +#endif + static void netboot_update_env(void) { char tmp[22]; diff --git a/include/net.h b/include/net.h index 220eba2e21..3553f17a8e 100644 --- a/include/net.h +++ b/include/net.h @@ -557,7 +557,7 @@ extern int net_restart_wrap; /* Tried all network devices */ enum proto_t { BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP, - TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, WOL, UDP + TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, WOL, UDP, WGET }; extern char net_boot_file_name[1024];/* Boot File name */ diff --git a/include/net/wget.h b/include/net/wget.h new file mode 100644 index 0000000000..61bdd851f9 --- /dev/null +++ b/include/net/wget.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Duncan Hare Copyright 2017 + */ + +void wget_start(void); /* Begin wget */ + +enum WGET_STATE { + WGET_CLOSED, + WGET_CONNECTING, + WGET_CONNECTED, + WGET_TRANSFERRING, + WGET_TRANSFERRED +}; + +#define DEBUG_WGET 0 /* Set to 1 for debug messges */ +#define SERVER_PORT 80 +#define WGET_RETRY_COUNT 30 +#define WGET_TIMEOUT 2000UL diff --git a/net/Makefile b/net/Makefile index f68ad94767..54ef337e80 100644 --- a/net/Makefile +++ b/net/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_UDP_FUNCTION_FASTBOOT) += fastboot.o obj-$(CONFIG_CMD_WOL) += wol.o obj-$(CONFIG_PROT_UDP) += udp.o obj-$(CONFIG_PROT_TCP) += tcp.o +obj-$(CONFIG_CMD_WGET) += wget.o # Disable this warning as it is triggered by: # sprintf(buf, index ? "foo%d" : "foo", index) diff --git a/net/net.c b/net/net.c index 28d9fbd227..5044c42add 100644 --- a/net/net.c +++ b/net/net.c @@ -117,6 +117,7 @@ #include "wol.h" #endif #include +#include /** BOOTP EXTENTIONS **/ @@ -505,6 +506,11 @@ restart: nfs_start(); break; #endif +#if defined(CONFIG_CMD_WGET) + case WGET: + wget_start(); + break; +#endif #if defined(CONFIG_CMD_CDP) case CDP: cdp_start(); diff --git a/net/wget.c b/net/wget.c new file mode 100644 index 0000000000..e3d1c8cc28 --- /dev/null +++ b/net/wget.c @@ -0,0 +1,436 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * WGET/HTTP support driver based on U-BOOT's nfs.c + * Copyright Duncan Hare 2017 + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +static const char bootfile1[] = "GET "; +static const char bootfile3[] = " HTTP/1.0\r\n\r\n"; +static const char http_eom[] = "\r\n\r\n"; +static const char http_ok[] = "200"; +static const char content_len[] = "Content-Length"; +static const char linefeed[] = "\r\n"; +static struct in_addr web_server_ip; +static int our_port; +static int wget_timeout_count; + +struct pkt_qd { + uchar *pkt; + unsigned int tcp_seq_num; + unsigned int len; +}; + +/* + * This is a control structure for out of order packets received. + * The actual packet bufers are in the kernel space, and are + * expected to be overwritten by the downloaded image. + */ + +static struct pkt_qd pkt_q[PKTBUFSRX / 4]; +static int pkt_q_idx; +static unsigned long content_length; +static unsigned int packets; + +static unsigned int initial_data_seq_num; + +static enum WGET_STATE wget_state; + +static char *image_url; +static unsigned int wget_timeout = WGET_TIMEOUT; + +static void wget_timeout_handler(void); + +static enum net_loop_state wget_loop_state; + +/* Timeout retry parameters */ +static u8 retry_action; +static unsigned int retry_tcp_ack_num; +static unsigned int retry_tcp_seq_num; +static int retry_len; + +static inline int store_block(uchar *src, unsigned int offset, unsigned int len) +{ + ulong newsize = offset + len; + uchar *ptr; + +#ifdef CONFIG_SYS_DIRECT_FLASH_WGET + int i, rc = 0; + + for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { + /* start address in flash? */ + if (image_load_addr + offset >= flash_info[i].start[0]) { + rc = 1; + break; + } + } + + if (rc) { /* Flash is destination for this packet */ + rc = flash_write((uchar *)src, + (ulong)(image_load_addr + offset), len); + if (rc) { + flash_perror(rc); + return -1; + } + } else { +#endif /* CONFIG_SYS_DIRECT_FLASH_WGET */ + + ptr = map_sysmem(image_load_addr + offset, len); + memcpy(ptr, src, len); + unmap_sysmem(ptr); + +#ifdef CONFIG_SYS_DIRECT_FLASH_WGET + } +#endif + if (net_boot_file_size < (offset + len)) + net_boot_file_size = newsize; + return 0; +} + +/* + * wget response dispatcher + * WARNING, This, and only this, is the place in wget.c where + * SEQUENCE NUMBERS are swapped between incoming (RX) + * and outgoing (TX). + * Procedure wget_handler() is correct for RX traffic. + */ +static void wget_send_stored(void) +{ + u8 action = retry_action; + unsigned int tcp_ack_num = retry_tcp_ack_num; + unsigned int tcp_seq_num = retry_tcp_seq_num; + int len = retry_len; + uchar *ptr; + uchar *offset; + + tcp_ack_num = tcp_ack_num + len; + + switch (wget_state) { + case WGET_CLOSED: + debug_cond(DEBUG_WGET, "wget: send SYN\n"); + wget_state = WGET_CONNECTING; + net_send_tcp_packet(0, SERVER_PORT, our_port, action, + tcp_seq_num, tcp_ack_num); + packets = 0; + break; + case WGET_CONNECTING: + pkt_q_idx = 0; + net_send_tcp_packet(0, SERVER_PORT, our_port, action, + tcp_seq_num, tcp_ack_num); + + ptr = net_tx_packet + net_eth_hdr_size() + + IP_TCP_HDR_SIZE + TCP_TSOPT_SIZE + 2; + offset = ptr; + + memcpy(offset, &bootfile1, strlen(bootfile1)); + offset = offset + strlen(bootfile1); + + memcpy(offset, image_url, strlen(image_url)); + offset = offset + strlen(image_url); + + memcpy(offset, &bootfile3, strlen(bootfile3)); + offset = offset + strlen(bootfile3); + net_send_tcp_packet((offset - ptr), SERVER_PORT, our_port, + TCP_PUSH, tcp_seq_num, tcp_ack_num); + wget_state = WGET_CONNECTED; + break; + case WGET_CONNECTED: + case WGET_TRANSFERRING: + case WGET_TRANSFERRED: + net_send_tcp_packet(0, SERVER_PORT, our_port, action, + tcp_seq_num, tcp_ack_num); + break; + } +} + +static void wget_send(u8 action, unsigned int tcp_ack_num, + unsigned int tcp_seq_num, int len) +{ + retry_action = action; + retry_tcp_ack_num = tcp_ack_num; + retry_tcp_seq_num = tcp_seq_num; + retry_len = len; + wget_send_stored(); +} + +void wget_fail(char *error_message, unsigned int tcp_seq_num, + unsigned int tcp_ack_num, u8 action) +{ + printf("%s", error_message); + printf("%s", "wget: Transfer Fail\n"); + net_set_timeout_handler(0, NULL); + wget_send(action, tcp_seq_num, tcp_ack_num, 0); +} + +void wget_success(u8 action, unsigned int tcp_seq_num, + unsigned int tcp_ack_num, int len, int packets) +{ + printf("Packets received %d, Transfer Successful\n", packets); + wget_send(action, tcp_seq_num, tcp_ack_num, len); +} + +/* + * Interfaces of U-BOOT + */ +static void wget_timeout_handler(void) +{ + if (++wget_timeout_count > WGET_RETRY_COUNT) { + puts("\nRetry count exceeded; starting again\n"); + wget_send(TCP_RST, 0, 0, 0); + net_start_again(); + } else { + puts("T "); + net_set_timeout_handler(wget_timeout + + WGET_TIMEOUT * wget_timeout_count, + wget_timeout_handler); + wget_send_stored(); + } +} + +static void wget_connected(uchar *pkt, unsigned int tcp_seq_num, + struct in_addr action_and_state, + unsigned int tcp_ack_num, unsigned int len) +{ + u8 action = action_and_state.s_addr; + uchar *pkt_in_q; + char *pos; + int hlen; + int i; + + pkt[len] = '\0'; + pos = strstr((char *)pkt, http_eom); + + if (pos == 0) { + debug_cond(DEBUG_WGET, + "wget: Connected, data before Header %p\n", pkt); + pkt_in_q = (void *)image_load_addr + 0x20000 + (pkt_q_idx * 0x800); + memcpy(pkt_in_q, pkt, len); + pkt_q[pkt_q_idx].pkt = pkt_in_q; + pkt_q[pkt_q_idx].tcp_seq_num = tcp_seq_num; + pkt_q[pkt_q_idx].len = len; + pkt_q_idx++; + } else { + debug_cond(DEBUG_WGET, "wget: Connected HTTP Header %p\n", pkt); + hlen = pos - (char *)pkt + sizeof(http_eom) - 1; + pos = strstr((char *)pkt, linefeed); + if (pos > 0) + i = pos - (char *)pkt; + else + i = hlen; + printf("%.*s", i, pkt); + + wget_state = WGET_TRANSFERRING; + + if (strstr((char *)pkt, http_ok) == 0) { + debug_cond(DEBUG_WGET, + "wget: Connected Bad Xfer\n"); + wget_loop_state = NETLOOP_FAIL; + wget_send(action, tcp_seq_num, tcp_ack_num, len); + } else { + debug_cond(DEBUG_WGET, + "wget: Connctd pkt %p hlen %x\n", + pkt, hlen); + initial_data_seq_num = tcp_seq_num + hlen; + + pos = strstr((char *)pkt, content_len); + if (!pos) { + content_length = -1; + } else { + pos = pos + sizeof(content_len) + 2; + strict_strtoul(pos, 10, &content_length); + debug_cond(DEBUG_WGET, + "wget: Connected Len %lu\n", + content_length); + } + + net_boot_file_size = 0; + + if (len > hlen) + store_block(pkt + hlen, 0, len - hlen); + debug_cond(DEBUG_WGET, + "wget: Connected Pkt %p hlen %x\n", + pkt, hlen); + + for (i = 0; i < pkt_q_idx; i++) { + store_block(pkt_q[i].pkt, + pkt_q[i].tcp_seq_num - + initial_data_seq_num, + pkt_q[i].len); + debug_cond(DEBUG_WGET, + "wget: Connctd pkt Q %p len %x\n", + pkt_q[i].pkt, pkt_q[i].len); + } + } + } + wget_send(action, tcp_seq_num, tcp_ack_num, len); +} + +/* + * In the "application push" invocation, the TCP header with all + * its information is pointed to by the packet pointer. + * + * in the typedef + * void rxhand_tcp(uchar *pkt, unsigned int dport, + * struct in_addr sip, unsigned int sport, + * unsigned int len); + * *pkt is the pointer to the payload + * dport is used for tcp_seg_num + * action_and_state.s_addr is used for TCP state + * sport is used for tcp_ack_num (which is unused by the app) + * pkt_ length is the payload length. + */ +static void wget_handler(uchar *pkt, unsigned int tcp_seq_num, + struct in_addr action_and_state, + unsigned int tcp_ack_num, unsigned int len) +{ + enum TCP_STATE wget_tcp_state = tcp_get_tcp_state(); + u8 action = action_and_state.s_addr; + + net_set_timeout_handler(wget_timeout, wget_timeout_handler); + packets++; + + switch (wget_state) { + case WGET_CLOSED: + debug_cond(DEBUG_WGET, "wget: Handler: Error!, State wrong\n"); + break; + case WGET_CONNECTING: + debug_cond(DEBUG_WGET, + "wget: Connecting In len=%x, Seq=%x, Ack=%x\n", + len, tcp_seq_num, tcp_ack_num); + if (len == 0) { + if (wget_tcp_state == TCP_ESTABLISHED) { + debug_cond(DEBUG_WGET, + "wget: Cting, send, len=%x\n", len); + wget_send(action, tcp_seq_num, tcp_ack_num, + len); + } else { + printf("%.*s", len, pkt); + wget_fail("wget: Handler Connected Fail\n", + tcp_seq_num, tcp_ack_num, action); + } + } + break; + case WGET_CONNECTED: + debug_cond(DEBUG_WGET, "wget: Connected seq=%x, len=%x\n", + tcp_seq_num, len); + if (len == 0) { + wget_fail("Image not found, no data returned\n", + tcp_seq_num, tcp_ack_num, action); + } else { + wget_connected(pkt, tcp_seq_num, action_and_state, + tcp_ack_num, len); + } + break; + case WGET_TRANSFERRING: + debug_cond(DEBUG_WGET, + "wget: Transferring, seq=%x, ack=%x,len=%x\n", + tcp_seq_num, tcp_ack_num, len); + + if (store_block(pkt, + tcp_seq_num - initial_data_seq_num, len) != 0) { + wget_fail("wget: store error\n", + tcp_seq_num, tcp_ack_num, action); + return; + } + + switch (wget_tcp_state) { + case TCP_FIN_WAIT_2: + wget_send(TCP_ACK, tcp_seq_num, tcp_ack_num, len); + case TCP_SYN_SENT: + case TCP_CLOSING: + case TCP_FIN_WAIT_1: + case TCP_CLOSED: + net_set_state(NETLOOP_FAIL); + break; + case TCP_ESTABLISHED: + wget_send(TCP_ACK, tcp_seq_num, tcp_ack_num, + len); + wget_loop_state = NETLOOP_SUCCESS; + break; + case TCP_CLOSE_WAIT: /* End of transfer */ + wget_state = WGET_TRANSFERRED; + wget_send(action | TCP_ACK | TCP_FIN, + tcp_seq_num, tcp_ack_num, len); + break; + } + break; + case WGET_TRANSFERRED: + printf("Packets received %d, Transfer Successful\n", packets); + net_set_state(wget_loop_state); + break; + } +} + +/* + * make port a little random (1024-17407) + * This keeps the math somewhat trivial to compute, and seems to work with + * all supported protocols/clients/servers + */ +static unsigned int random_port(void) +{ + return 1024 + (get_timer(0) % 0x4000); +} + +void wget_start(void) +{ + image_url = strchr(net_boot_file_name, ':'); + if (image_url > 0) { + web_server_ip = string_to_ip(net_boot_file_name); + ++image_url; + } else { + web_server_ip = net_server_ip; + image_url = net_boot_file_name; + } + + debug_cond(DEBUG_WGET, + "wget: Transfer HTTP Server %pI4; our IP %pI4\n", + &web_server_ip, &net_ip); + + /* Check if we need to send across this subnet */ + if (net_gateway.s_addr && net_netmask.s_addr) { + struct in_addr our_net; + struct in_addr server_net; + + our_net.s_addr = net_ip.s_addr & net_netmask.s_addr; + server_net.s_addr = net_server_ip.s_addr & net_netmask.s_addr; + if (our_net.s_addr != server_net.s_addr) + debug_cond(DEBUG_WGET, + "wget: sending through gateway %pI4", + &net_gateway); + } + debug_cond(DEBUG_WGET, "URL '%s'\n", image_url); + + if (net_boot_file_expected_size_in_blocks) { + debug_cond(DEBUG_WGET, "wget: Size is 0x%x Bytes = ", + net_boot_file_expected_size_in_blocks << 9); + print_size(net_boot_file_expected_size_in_blocks << 9, ""); + } + debug_cond(DEBUG_WGET, + "\nwget:Load address: 0x%lx\nLoading: *\b", image_load_addr); + + net_set_timeout_handler(wget_timeout, wget_timeout_handler); + tcp_set_tcp_handler(wget_handler); + + wget_timeout_count = 0; + wget_state = WGET_CLOSED; + + our_port = random_port(); + + /* + * Zero out server ether to forece apr resolution in case + * the server ip for the previous u-boot commsnd, for exanple dns + * is not the same as the web server ip. + */ + + memset(net_server_ethaddr, 0, 6); + + wget_send(TCP_SYN, 0, 0, 0); +}