tree 556ff14dceb090e0ef39c048c0b1a4b5d3ad7650
parent c8d19c53b6be41e323265dff1b28e59a5cb81264
author Jerome Forissier <jerome.forissier@linaro.org> 1729073052 +0200
committer Tom Rini <trini@konsulko.com> 1729098717 -0600

net: lwip: tftp: add support of blksize option to client

The TFTP protocol uses a default block size of 512 bytes. This value is
sub-optimal for ethernet devices, which have a MTU (Maximum Transmission
Unit) of 1500 bytes. When taking into acount the overhead of the IP and
UDP layers, this leaves 1468 bytes for the TFTP payload.

This patch introduces a new function: tftp_client_set_blksize() which
may be used to change the block size from the default. It has to be
called after tftp_client_init() and before tftp_get(). If the server
does not support the option, the client will still accept to receive
512-byte blocks.

Submitted upstream: https://savannah.nongnu.org/patch/index.php?10462

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>