Date: Fri, 22 Mar 2002 17:31:30 -0800 (PST) From: Dinesh Nambisan <dinesh@verniernetworks.com> To: freebsd-net@freebsd.org Cc: julian@elischer.org Subject: Socket buffer size limitation Message-ID: <20020322172352.R60156-100000@getafix.verniernetworks.com>
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Hello, I have a situation where I'm trying to set the send and receive buffer sizes on a socket to large values like 1 MB or so (dont ask why :-), simple reason being we need it); and setsockopt for setting the buffer sizes seems to fail with ENOBUFS. On looking at the code in uipc_socket.c where it handles the SO_SNDBUF & SO_RCVBUF options, and the code in uipc_socket2.c where it actually tries to reserve space (in sbreserve function_, the issue seems to be a limit imposed by the code to approx 227K or so [ sb_max(=256) * MCLBYTES / (MSIZE + MCLBYTES) ; which works out to approx 227 K on my platform] Was wondering if anyone could explain as to why this limit is there ? Thanks in advance, Dinesh Nambisan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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