From: Dan Williams <dcbw@redhat.com>
To: netdev@vger.kernel.org
Subject: pppoe.ko intercepts PADT frames and leaves pppd ignorant
Date: Wed, 30 Oct 2013 15:09:13 -0500 [thread overview]
Message-ID: <1383163753.21123.22.camel@dcbw.foobar.com> (raw)
Hi,
I noticed that pppd is completely ignorant of kernel handling of PADT
frames; they will cause the kernel to terminate the PPPoE connection,
but pppd continues blissfully on until the LCP echo timeout. Ideally
pppd/rp-pppoe would notice that a PADT was received, and could then
clean up immediately. This apparently happens fine with usermode PPPoE,
but not with kernel PPPoE.
pppoe_disc_rcv() intercepts PADT and verifies it, and then drops it on
the floor. How is userland supposed to know that the PPPoE session is
now a zombie and the PPP session should be cleaned up?
Thanks,
Dan
reply other threads:[~2013-10-30 20:09 UTC|newest]
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