Date: Sun, 12 Nov 2006 17:29:23 +0200 From: "Vlad GURDIGA" <gurdiga@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: bpf kernel module Message-ID: <da7069940611120729k6110bcc4jced81bc30e4e2fdc@mail.gmail.com> In-Reply-To: <44zmaw66cv.fsf@be-well.ilk.org> References: <da7069940611111423i1084800bh560e161e870b3826@mail.gmail.com> <44zmaw66cv.fsf@be-well.ilk.org>
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On 12/11/06, Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> wrote: > "Vlad GURDIGA" <gurdiga@gmail.com> writes: > > > I'm trying to keep very close touch with 6.1_STABLE cvsupping sources > > once a week or even more often. I'm thinking of removing as much as > > possible devices from the kernel loading them from /boot/loader.conf > > instead, so I could rebuild and install them without a whole > > kernel/world rebuild and reboot when sources change. I'm not sure this > > is a correct way, any piece of advice regarding this would be highly > > appreciated. :) > > > > So, I've successfully done that with sound and network card drivers, > > but did not succeed with removing bpf from the kernel. Booting a > > kernel with no bpf support, and with > > ng_bpf_load="YES" in my loader.conf, the pflogd fails to start with this error: > > > > Nov 11 20:22:33 uxterm pflogd[10251]: Failed to initialize: (no > > devices found) /dev/bpf0: No such file or directory > > Nov 11 20:22:33 uxterm pflogd[10251]: Exiting, init failure > > > > And, tcpdump also fails saying that "no suitable device found". Of > > course there is no /dev/bpf0. > > > > Is there any way to have the bpf0 device without booting a kernel with > > bpf device included? > > The kernel module *should* work. I suspect that there is an error > message when it tries to load the module and fails. You could check > for that error message, or try to load the module by hand and see if > you get a clue to the problem. > Here is how I did: commented out the "device bpf" line in the kernel, built and installed the kernel, and added ng_bpf_load="YES" in loader.conf. I guess this is the module for the bpf (is this correct? I'm not 100% sure). So, booting with the new kernel, and the module being loaded from the loader.conf, the pflogd fails to start with this error: Nov 11 20:22:33 uxterm pflogd[10251]: Failed to initialize: (no devices found) /dev/bpf0: No such file or directory Nov 11 20:22:33 uxterm pflogd[10251]: Exiting, init failure And, tcpdump also fails saying that "no suitable device found". Of course there is no /dev/bpf0. Unfortunately, I do not have enough experience to figure out how to load this device at runtime. Is there any solution to this situation?
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