6/26/2023 0 Comments Freebsd netmapFreeBSD as a Guest on Parallels Desktop for macOS® RAID3 - Byte-level Striping with Dedicated Parity GEOM: Modular Disk Transformation Framework Installing Applications: Packages and Ports Network Interfaces, Accounts, Time Zone, Services and Hardening I'll implement the potential solution noted here to see if it makes a difference. Netmap_ioctl() at netmap_ioctl+0x1a4/frame 0xfffffe00dafcbb10įreebsd_netmap_ioctl() at freebsd_netmap_ioctl+0x74/frame 0xfffffe00dafcbb50 Generic_netmap_txsync() at generic_netmap_txsync+0x2eb/frame 0xfffffe00dafcba40 Nm_os_generic_xmit_frame() at nm_os_generic_xmit_frame+0圆d/frame 0xfffffe00dafcb950 Vlan_transmit() at vlan_transmit+0xf3/frame 0xfffffe00dafcb930 Vtnet_txq_mq_start() at vtnet_txq_mq_start+0圆1/frame 0xfffffe00dafcb8e0 Vtnet_txq_mq_start_locked() at vtnet_txq_mq_start_locked+0xa2/frame 0xfffffe00dafcb8b0 Virtqueue_notify() at virtqueue_notify+0x87/frame 0xfffffe00dafcb860 Lapic_handle_timer() at lapic_handle_timer/frame 0xfffffe00dafcb830 I am getting regular kernel panics that seem to point to Netmap: I just posted a comment in the Zenarmor noting that I think Netmap is causing a bit more of an issue than issues with generic mode (which I do not use). Some work is being done although really slow in the grand scheme of things but still gradual so as to take one step at a time. I think at least starting to see kernel issues for what they are is a good step all things considered. And past that we do seem to trigger other side effects from these reworks that are more in the area of the kernel than our code, which could have the averse effect stated as well. There is no ill intention on breaking a certain setup (and none was implied here but I feel I should state it explicitly). The rework of code paths is always done to simplify and to take side effects out of the configuration paths as they are reported. That's also why we involved Klara to look at a few shortcomings and problems encountered over the years.Ģ. It's being worked on but the main consumers seem to be OPNsense/pfSense and research projects (where this originally came from). Netmap has its limits both in technical and organisational sense. FreeBSD state does sometimes deteriorate due to surrounding networking changes. It should be noted that this config did previously work (with the OPNs bridge or without), so not sure where a change was implemented to break it.Īm I on the right path here? Apologies if I am off target, I am a bit out of my comfort zone on this one.Ĭould be that it was working either due to older FreeBSD state or old code paths that have subsequently been rewritten. Therefore, the solution is to either fix netmap or add support to if_bridge(4). IF I understand correctly (big assumption), their "bridge mode" currently uses netmap and bypasses the OS, but the problem is that ZA won't pass traffic at all unless the bridge is also configured in OPNs (resulting in the flapping). It doesn't stall, it just doesn't work at all which seems different. I have a feeling this doesn't apply to me due to the fact that I have OPNs configured as a transparent filtering bridge and using the ZA bridge deployment mode. The result is that it "works", but I still have the interface flapping so it didn't resolve my particular issue. Sunny Valley support has indicated the problem is netmap and asked me to give this a try, which I did yesterday. I have been troubleshooting an issue with Sensei/ZA which I have documented here: Not quite sure if this applies to my situation - looking for clarification. The patch does have implications on reliability in generic mode (which was always and will always be less reliable than native netmap mode), but we will explain these at a later time. We would hope some of you could try this one out and see if problems disappear (or perhaps cause another dropout as we've solved internally already with an earlier version of the patch). If you see log messages here then you might be affected and perhaps saw the behaviour before: suricata/zenarmor needs to be restarted in order to continue packet flow.Īnd the kernel can be installed on 23.1 easily: It's easy to spot these on your system, e.g.:Ĥ42.167865 generic_netmap_register Emulated adapter for gif1 activated One of those bugs has been network traffic becoming unresponsive on generic mode, which means the driver itself doesn't support netmap, but can be made to interact with netmap wrapping around it. One of the goals in the project was to find and remove bugs from netmap. Zenarmor and OPNsense have been working with Klara to bring netmap improvements to FreeBSD, some of which have already landed in the development branch for upcoming FreeBSD 14.
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