From: Grant Edwards <grant.b.edwards@gmail.com>
To: ecos-discuss@ecos.sourceware.org
Subject: [ECOS] Re: Does FreeBSD stack support multiple IP addresses?
Date: Mon, 22 Feb 2016 15:05:00 -0000 [thread overview]
Message-ID: <naf83u$plg$1@ger.gmane.org> (raw)
In-Reply-To: <56CACBE1.6040103@televic.com>
On 2016-02-22, Lambrecht Jürgen <J.Lambrecht@TELEVIC.com> wrote:
> On 02/19/2016 07:11 PM, Grant Edwards wrote:
>> On 2016-02-19, Grant Edwards <grant.b.edwards@gmail.com> wrote:
>>
>>> Can one assign multiple IP addresses (on different subnets) to a
>>> single interface when using the eCos FreeBSD network stack?
[...]
>> You use SIOCAIFADDR(_IN6) instead of SIOCASIFADDR and its brethren.
>
> I had 2 problems to assign 2 IP addresses with different netmasks:
>
> - To assign an IP address an set a netmask are 2 different ioctl
> calls. To set the netmask, you cannot specify for which IP
> address you set it. The code (current/src/sys/netinet/in.c) is
> written in such a way that the netmask is set on the last IP
> address you added on that interface. So that should be OK if you
> keep the correct order.
When I tried it, the SIOCAIFADDR ioctl() let me set both address and
netmask in a single call. The "case SIOCAIFADDR" code falls through
into SIOCSIFNETMASK code. That didn't work for you?
> - It is only possible to assign a class A/B/C netmask. CIDR netmasks are
> not possible.
I think that's always been the case for this version of the stack,
hasn't it?
> I fixed current/src/sys/netinet/in.c for it, but I also
> adapted the ioctl to combine setting IP address and netmask in 1 call
> (so I cannot commit it back). Let me know if you want my fix.
I'm confused: based on my experiments and examination of the source
code, it already works that way.
--
Grant Edwards grant.b.edwards Yow! Psychoanalysis??
at I thought this was a nude
gmail.com rap session!!!
--
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next prev parent reply other threads:[~2016-02-22 15:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-19 16:35 [ECOS] " Grant Edwards
2016-02-19 18:12 ` [ECOS] " Grant Edwards
2016-02-22 8:50 ` Lambrecht Jürgen
2016-02-22 15:05 ` Grant Edwards [this message]
2016-02-23 8:09 ` Lambrecht Jürgen
2016-02-23 15:59 ` Grant Edwards
[not found] ` <DUB109-W90FA10A08EE609DF0BB91393A50@phx.gbl>
2016-02-24 16:47 ` Grant Edwards
2016-03-15 11:10 ` Lambrecht Jürgen
2016-03-15 14:56 ` Grant Edwards
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