[U-Boot] [PATCH v12 3/3] Add wget application

Christian Gmeiner christian.gmeiner at gmail.com
Tue Aug 14 07:43:29 UTC 2018


Am Mo., 25. Juni 2018 um 00:42 Uhr schrieb <DH at synoia.com>:
>
> From: Duncan Hare <DuncanCHare at yahoo.com>
>
> 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 <DuncanCHare at yahoo.com>
> ---
>
>  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 <net/tcp.h>
> +#include <net/wget.h>
>
>  /** 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 <dh at synoia.com> 2017
> + */
> +
> +#include <common.h>
> +#include <command.h>
> +#include <mapmem.h>
> +#include <net.h>
> +#include <net/wget.h>
> +#include <net/tcp.h>
> +
> +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";

Make all of them static const char ... ?

> +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.
> +        */

interesting indentation...

> +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);
> +}
> --
> 2.11.0
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> https://lists.denx.de/listinfo/u-boot



-- 
greets
--
Christian Gmeiner, MSc

https://christian-gmeiner.info


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