Date: Mon, 18 Oct 2021 07:46:03 +0300 From: =?UTF-8?B?w5Z6a2FuIEtJUklL?= <ozkan.kirik@gmail.com> To: FreeBSD Net <freebsd-net@freebsd.org>, freebsd-hackers@freebsd.org Subject: Iterating all VNETs from userspace application Message-ID: <CAAcX-AFhdqOdA0%2BfFRvxNJfA%2BXtSJSKqZiXwhq_wKTbiHbeWcg@mail.gmail.com>
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Hi, I'm trying to gather all even within jails/vnet interface stats which interface type ifmd_data.ifi_type == IFT_ETHER (6) for bsnmpd. Related function (not modified) is here: https://github.com/freebsd/freebsd-src/blob/main/contrib/bsnmp/snmp_mibII/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 != 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 nice day Regards
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