Date: Mon, 18 Oct 2021 07:49:40 +0000 From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: "=?utf-8?q?=C3=96zkan?= KIRIK" <ozkan.kirik@gmail.com> Cc: "FreeBSD Net" <freebsd-net@freebsd.org>, freebsd-hackers@freebsd.org Subject: Re: Iterating all VNETs from userspace application Message-ID: <E7D358D8-F992-47CA-9A54-3F6A36369D49@lists.zabbadoz.net> In-Reply-To: <CAAcX-AFhdqOdA0%2BfFRvxNJfA%2BXtSJSKqZiXwhq_wKTbiHbeWcg@mail.gmail.com> References: <CAAcX-AFhdqOdA0%2BfFRvxNJfA%2BXtSJSKqZiXwhq_wKTbiHbeWcg@mail.gmail.com>
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On 18 Oct 2021, at 4:46, =C3=96zkan KIRIK wrote: > Hi, > > I'm trying to gather all even within jails/vnet interface stats which > interface type ifmd_data.ifi_type =3D=3D IFT_ETHER (6) for bsnmpd. Rela= ted > function (not modified) is here: > > https://github.com/freebsd/freebsd-src/blob/main/contrib/bsnmp/snmp_mib= II/mibII.c#L926-L985 > > It's possible to add a filter interface type adding a line below line = > 961: > if (mib.ifmd_data.ifi_type !=3D IFT_ETHER) return; > > I'm looking for a way to iterate VNET instances, but net/vnet.h is > only for kernel space. > VNET_LIST_RLOCK_NOSLEEP(); > VNET_FOREACH(vnet_iter) { > CURVNET_SET(vnet_iter); > mib_refresh_iflist(); > CURVNET_RESTORE(); > } > VNET_LIST_RUNLOCK_NOSLEEP(); > The code above not working in userspace. > > Also I wonder that if it's possible to switch between jails. The > pseudo code I want to write: > > JAIL_FOREACH(jail_iter) { > jail_attach(jail_iter); > mib_refresh_iflist(); > jail_detach(); > } > > What is the right way to gather all interface stats ? Have a look at libkvm; I seem to remember adding vnet support. /bz
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