Date: Sat, 23 Nov 2002 21:35:24 +0100 From: Vincent Jardin <vjardin@wanadoo.fr> To: freebsd-net@freebsd.org Subject: a ng_pppoe bug ? Message-ID: <3DD3B25600551D5F@mel-rta7.wanadoo.fr> (added by postmaster@wanadoo.fr)
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Hi,
I am wondering if it is a bug of ng_pppoe.
The objects that have the structure sess_neg hold a pointer on the last sent
packet.
struct sess_neg {
struct mbuf *m; /* holds cluster with last sent packet */
union packet *pkt; /* points within the above cluster */
(...)
Then when a packet is made, the same mbuf is always reused. However, m_data
might have been changed by another node or a driver (for example, there are
some pieces of code that translate m_data: m_data += n).
It means that the second time a pppoe packet is sent during the negocation, a
part of the ethernet header is missing.
It think that the problem is related to m_copypacket that is used within
ng_ppppoe in order to keep always the same mbuf.
Vincent
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