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max IP packet size = 9216 B. Why?
- From: Jürgen Lambrecht <J dot Lambrecht at televic dot com>
- To: eCos Discussion <ecos-discuss at ecos dot sourceware dot org>
- Cc: Jürgen Lambrecht <jurgen dot lambrecht at scarlet dot be>
- Date: Tue, 12 Jun 2007 17:49:30 +0200
- Subject: [ECOS] max IP packet size = 9216 B. Why?
Hello,
I found out that the maximum IP packet size = 9216 B (0x2400).
I implemented an echo program, both udp and tcp.
My ecos applic can receive more that 9216B, but not send back more than
that.
Has anybody a clue how to solve this?
I need to support the maximum IP packet size of 65535 B (IP_MAXPACKET).
I don't know if this is a bug in ecos, or a (hidden?) limitation of an
embedded OS.
Thanks,
Juergen Lambrecht
P.S.:
I'm busy tracing this back in the source
This comes from the socket that is allocated statically in
/io/fileio/.../fd.cxx and socket is part of a cyg_file (cyg_file is
defined by file in file.h). In cyg_file there is a member f_data, which
is the socket.
I'm continuing my search in the code at this point....
--
Jürgen Lambrecht
R&D Engineer
Televic Transport Systems
http://www.televic.com
Televic NV / SA (main office)
Leo Bekaertlaan 1
B-8870 Izegem
Tel: +32 (0)51 303045
Fax: +32 (0)51 310670
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