2022-09-03 11:31:04 +00:00
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.. SPDX-License-Identifier: GPL-2.0+:
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tftpput command
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===============
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Synopsis
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--------
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::
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tftpput address size [[hostIPaddr:]filename]
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2022-09-09 18:10:51 +00:00
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Description
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-----------
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2022-09-03 11:31:04 +00:00
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The tftpput command is used to transfer a file to a TFTP server.
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By default the destination port is 69 and the source port is pseudo-random.
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If CONFIG_TFTP_PORT=y, the environment variable *tftpsrcp* can be used to set
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the source port and the environment variable *tftpdstp* can be used to set
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the destination port.
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address
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memory address where the data starts
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size
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number of bytes to be transferred
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hostIPaddr
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IP address of the TFTP server, defaults to the value of environment
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variable *serverip*
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filename
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path of the file to be written. If not provided, the client's IP address is
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used to construct a default file name, e.g. C0.A8.00.28.img for IP address
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192.168.0.40.
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Example
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-------
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In the example the following steps are executed:
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* setup client network address
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* load a file from the SD-card
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* send the file via TFTP to a server
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::
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=> setenv autoload no
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=> dhcp
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BOOTP broadcast 1
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DHCP client bound to address 192.168.1.40 (7 ms)
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=> load mmc 0:1 $loadaddr test.txt
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260096 bytes read in 13 ms (19.1 MiB/s)
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=> tftpput $loadaddr $filesize 192.168.1.3:upload/test.txt
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Using ethernet@1c30000 device
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TFTP to server 192.168.1.3; our IP address is 192.168.1.40
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Filename 'upload/test.txt'.
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Save address: 0x42000000
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Save size: 0x3f800
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Saving: #################
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4.4 MiB/s
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done
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Bytes transferred = 260096 (3f800 hex)
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=>
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Configuration
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-------------
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The command is only available if CONFIG_CMD_TFTPPUT=y.
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CONFIG_TFTP_BLOCKSIZE defines the size of the TFTP blocks sent. It defaults
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to 1468 matching an ethernet MTU of 1500.
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If CONFIG_TFTP_PORT=y, the environment variables *tftpsrcp* and *tftpdstp* can
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be used to set the source and the destination ports.
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CONFIG_TFTP_WINDOWSIZE can be used to set the TFTP window size of transmits
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after which an ACK response is required. The window size defaults to 1.
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If CONFIG_TFTP_TSIZE=y, the progress bar is limited to 50 '#' characters.
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Otherwise an '#' is written per UDP package which may decrease performance.
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Return value
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------------
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The return value $? is 0 (true) on success and 1 (false) otherwise.
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