From patchwork Sun Jun 24 22:40:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Duncan Hare X-Patchwork-Id: 934007 X-Patchwork-Delegate: joe.hershberger@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=synoia.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=yahoo.com header.i=@yahoo.com header.b="npeG3PGv"; dkim-atps=neutral Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 41DS3J4SCPz9ry1 for ; Mon, 25 Jun 2018 08:41:48 +1000 (AEST) Received: by lists.denx.de (Postfix, from userid 105) id 48216C21DFA; Sun, 24 Jun 2018 22:41:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 9DC00C21DFF; Sun, 24 Jun 2018 22:41:14 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 48BAAC21DDC; Sun, 24 Jun 2018 22:41:06 +0000 (UTC) Received: from sonic304-29.consmr.mail.gq1.yahoo.com (sonic304-29.consmr.mail.gq1.yahoo.com [98.137.68.210]) by lists.denx.de (Postfix) with ESMTPS id 35296C21DE8 for ; Sun, 24 Jun 2018 22:41:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1529880060; bh=iYb8bZwWwYTbcIeitYslJT0MmCwR5lFBLPw3WC6c9rQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From:Subject; b=npeG3PGvQchfqWlFW3fvnFh0B5hE/nKhqdJt+baQETXM3ViZ5XwoEWTiMBV1oGrXeA5Jf2GZyK0xD6Pd4q//NKAfJsFPu2+I6YUmn0sYtfoEXFqAAhe1ZEYAehH37MUwnOSsf8CnT+CjAITp9/ZdaI228MMQ6ntKe4l1mHcsyGw/e/BqO17vZXFmjuzCzX74/ZZ2T8UnRMYDtArjSCbRFYG3QTwOJajolXFtHySaxmgdzDuLqZSZL+baigmRVjKjTBzxTuPz1vn/tnVEc8f0c3CJZanuYdjWAVEN5LiUzAsxhpV/UeK82AwUvNbgvkbBHQSMohR4e2Tpg/cpgH27uw== X-YMail-OSG: 6PaAs7YVM1le_ZVHCeh.uaajS2EFjvo47j8RqN6H1ux9i.UMlFPuHrK_r5oUkLx 7hARAb59WiRy_JO_RWT3zpYSyxh541FC2zxRRLM5gTmXIIYoVS_W9er233IRripdrAusCVNj4c5n XKaFxJsInSkBevBLnT.TiMCFh6XFvdIu0miP9luW9_pxRh8grM8wv.vLVW_S1lA_0ZqZPxepFQ1i 2gs_D8gy.HIet68AFe0P0jkfB_rXQK7moPdtivhBaWMNwv_2ORV0Z.pgTMruOFm0edHSfsN4XPju Xti4O6A8frwrDDrQiomO1uKsU8kxDPaU6PExk9l8k4UKT_GdB_HFcDGbVZSeBfS2PJOuowgyj.Fc EkV75x6gH2kS_0Mg35JiKvg.znn9iX4VYNRWHkyupp3_QwQ39v0rFjhPcxSXaARnnPKd2Wl5D4nk .WZO1CqaRaeDqr29YzdLdCtVOXAnRzKXoNIFtet5pDiMm4JWgGqrJX0s0mfouRJ_DlPFeDEYn9Db M142Np5kjjgCNB66K1G2LK4MgSz4ay.8Q32O1XjwTPZfh..B3AVbSdzEZGbmF4ducXTV.B.JZskw nZo2I0WwK.TBcRJfRg9tbVLssx5L39Bjw5dy0kNAABh3PKfgYgJL0YoAfQv7YHwdt7..onxB5iOW Cs5TE1feJlG6vifoIOpfhtXHfBCFzDznq5NI_OHQNPvS5qZR56WhA0NnswZ9S5XHraKhQZ_YI6Cu r71_Uzzota8yUJS_kc3vCO.8G5hZ816JxJxJsm7Gmrqg4r.QiJrfRpde5JLBSx3xy0rFImDSqjYi sNlHSVhOlm.DWCu3N7hEigLpVA9Byi6qSHcgD1_ntcINDVf.pBx6qoOMFmbY5BaUioXLHgjf8Vh9 wJr3iyyXsi_VWl0jvbbE_j3NBLfi15898ZYvwjMNSMGVATBRFCnpFlAFWbhlcK5HjDMUVAthssSh bNL_OOcrO.Gc6bRyPcOm6uBw_iVMBV.oBYmC87TGjJpuP Received: from sonic.gate.mail.ne1.yahoo.com by sonic304.consmr.mail.gq1.yahoo.com with HTTP; Sun, 24 Jun 2018 22:41:00 +0000 Received: from 68-95-124-113.lightspeed.irvnca.sbcglobal.net (EHLO raspberrypi.Danum.local) ([68.95.124.113]) by smtp402.mail.gq1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID f29df259cf5e3dfe6ff6ef53a971ed9f; Sun, 24 Jun 2018 22:40:58 +0000 (UTC) From: DH@synoia.com To: DuncanCHare@yahoo.com Date: Sun, 24 Jun 2018 15:40:43 -0700 Message-Id: <20180624224043.31503-3-DH@synoia.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180624224043.31503-1-DH@synoia.com> References: <20180624224043.31503-1-DH@synoia.com> Cc: u-boot@lists.denx.de, Joe Hershberger , Jason Kridner , Maxime Ripard , Chris Packham Subject: [U-Boot] [PATCH v12 3/3] Add wget application X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" From: Duncan Hare Commit-notes All the code is new, and not copied from any source Test wget wget is a general purpose TCP/IP program. There is a Linux/unix version of wget, which enables server verification without running u-boot. 1. The python distribution include a simple http request handler. To use it with u-boot and Linux wget start the python server in the directory which contains your test files. sudo python -m SimplleHTTPServer 80 sudo becuse the port number used is lower than 1,000. Leave this window open. Then test the server, in a directory different from your directory containing test file, assuming a test file named "test file.name" at a Linux command prompt enter: wget localhost/testfile.name and the file should be transferred to the receiving directory. The server verification is now complete. 2. wget in u-boot needs a load address, server ip address, an ip address, optional file path, and file name. The server and u-boot ip address can be 127.0.0.1. The routing is then between the u-boot test environment and the server in the same machine. u-boot script example env set ipaddr 127.0.0.1; env set loadaddr 0x8000000; wget 127.0.0.1 testfile.name or env set ipaddr 127.0.0.1; env set loadaddr 0x8000000; wget 127.0.0.1 pathname/testfile.name wget prints a progress "|" every 127 packets, and at the end of transfer prints a message of success or fail, and bytes transferred. When testing u-boot, we first did a large file transfer with wget and then modified tftp to download the same file and verify wget's transfer was both complete and correct, with a strcmp function replacing the copy to kernel area code fragment. END Cover-letter Add TCP and WGET This is a limited implementation of a TCP, a receiver, with selective acknowledgment (SACK), and wget as a transfer protocol over TCP. TCP with SACK provides maximum transfer rates over fast and fast multi-hop networks. TCP continues stream transfer if packets are dropped, and then recoveres dropped packed asynchronously. WGET is a very efficient file transfer protocol running over TCP. There is a single request for each file transferred, irrespective of file size. END Signed-off-by: Duncan Hare --- cmd/Kconfig | 7 + cmd/net.c | 13 ++ include/net.h | 2 +- include/net/wget.h | 19 +++ net/Makefile | 2 +- net/net.c | 9 +- net/wget.c | 426 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 475 insertions(+), 3 deletions(-) create mode 100644 include/net/wget.h create mode 100644 net/wget.c diff --git a/cmd/Kconfig b/cmd/Kconfig index 45c83359ad..fb9c894363 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -1192,6 +1192,13 @@ config CMD_NFS help Boot image via network using NFS protocol. +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" help diff --git a/cmd/net.c b/cmd/net.c index f83839c35e..f5fde849c4 100644 --- a/cmd/net.c +++ b/cmd/net.c @@ -113,6 +113,19 @@ U_BOOT_CMD( ); #endif +#if defined(CONFIG_CMD_WGET) +static int do_wget(cmd_tbl_t *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 ba96267eb8..14b013083d 100644 --- a/include/net.h +++ b/include/net.h @@ -539,7 +539,7 @@ 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 + TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT, 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 237023407f..882af145aa 100644 --- a/net/Makefile +++ b/net/Makefile @@ -23,8 +23,8 @@ obj-$(CONFIG_CMD_PING) += ping.o obj-$(CONFIG_CMD_RARP) += rarp.o obj-$(CONFIG_CMD_SNTP) += sntp.o obj-$(CONFIG_CMD_TFTPBOOT) += tftp.o -obj-$(CONFIG_UDP_FUNCTION_FASTBOOT) += fastboot.o obj-$(CONFIG_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 8ac1ff050f..39707d5b18 100644 --- a/net/net.c +++ b/net/net.c @@ -109,6 +109,7 @@ #include "sntp.h" #endif #include +#include /** BOOTP EXTENTIONS **/ @@ -494,6 +495,11 @@ 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(); @@ -1540,7 +1546,8 @@ void copy_filename(char *dst, const char *src, int size) #if defined(CONFIG_CMD_NFS) || \ defined(CONFIG_CMD_SNTP) || \ - defined(CONFIG_CMD_DNS) + defined(CONFIG_CMD_DNS) || \ + defined(CONFIG_CMD_WGET) /* * make port a little random (1024-17407) * This keeps the math somewhat trivial to compute, and seems to work with diff --git a/net/wget.c b/net/wget.c new file mode 100644 index 0000000000..8238ec52c4 --- /dev/null +++ b/net/wget.c @@ -0,0 +1,426 @@ +// 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 + +const char bootfile1[] = "GET "; +const char bootfile3[] = " HTTP/1.0\r\n\r\n"; +const char http_eom[] = "\r\n\r\n"; +const char http_ok[] = "200"; +const char content_len[] = "Content-Length"; +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 (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)(load_addr + offset), len); + if (rc) { + flash_perror(rc); + return -1; + } + } else { +#endif /* CONFIG_SYS_DIRECT_FLASH_WGET */ + + ptr = map_sysmem(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 *)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; + } +} + +void wget_start(void) +{ + debug_cond(DEBUG_WGET, "%s\n", __func__); + + 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", 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); +}