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MdeModulePke/Mtftp4Dxe: Support windowsize in read request operation.

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Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=886

This patch is to support the TFTP windowsize option described in RFC 7440.
The feature allows the client and server to negotiate a window size of
consecutive blocks to send as an alternative for replacing the single-block
lockstep schema.

Currently, the windowsize for write request operation is not supported since
there is no real use cases.

Cc: Ye Ting <ting.ye@intel.com>
Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Shao Ming <ming.shao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Wu Jiaxin <jiaxin.wu@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
This commit is contained in:
Jiaxin Wu
2018-09-14 15:47:20 +08:00
parent 6a147d6dae
commit 6c047cfab1
8 changed files with 89 additions and 37 deletions
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5
MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Impl.c
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@@ -80,6 +80,9 @@ Mtftp4CleanOperation (
Instance->Operation = 0;
Instance->BlkSize = MTFTP4_DEFAULT_BLKSIZE;
Instance->WindowSize = 1;
Instance->TotalBlock = 0;
Instance->AckedBlock = 0;
Instance->LastBlock = 0;
Instance->ServerIp = 0;
Instance->ListeningPort = 0;
@@ -428,6 +431,7 @@ Mtftp4Start (
Token->OptionList,
Token->OptionCount,
TRUE,
Instance->Operation,
&Instance->RequestOption
);
@@ -443,6 +447,7 @@ Mtftp4Start (
Config = &Instance->Config;
Instance->Token = Token;
Instance->BlkSize = MTFTP4_DEFAULT_BLKSIZE;
Instance->WindowSize = MTFTP4_DEFAULT_WINDOWSIZE;
CopyMem (&Instance->ServerIp, &Config->ServerIp, sizeof (IP4_ADDR));
Instance->ServerIp = NTOHL (Instance->ServerIp);