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Date: Sun, 4 Jul 2004 16:30:39 +0100
From: Bruce M Simpson <bms@spc.org>
To: Robert Watson <rwatson@freebsd.org>
Message-ID: <20040704153039.GC11170@empiric.dek.spc.org>
Mail-Followup-To: Robert Watson <rwatson@freebsd.org>,
	Andre Oppermann <andre@freebsd.org>, freebsd-net@freebsd.org,
	iedowse@FreeBSD.org
References: <40E66FB2.AE0FA833@freebsd.org>
	<Pine.NEB.3.96L.1040703174628.24282E-100000@fledge.watson.org>
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cc: freebsd-net@freebsd.org
cc: Andre Oppermann <andre@freebsd.org>
cc: iedowse@FreeBSD.org
Subject: Re: kern/38554: changing interface ipaddress doesn't seem to work
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On Sat, Jul 03, 2004 at 05:53:33PM -0400, Robert Watson wrote:
> Temporarily connecting sockets/pcbs during a datagram send with an
> explicit address (i.e., sendto()) occurs in both the UDP code and UNIX
> domain socket code.  Since this is expensive, and also increases the
> potential for races of various sorts, it would be nice to do this in a
> more efficient form where possible. 

Actually, iedowse@ pointed out that we now use in_pcb(bind|connect)_setup()
as opposed to doing a full in_pcb(connect|bind)() in udp_output(), so this
optimization has been done in -CURRENT (but not in -STABLE).

BMS