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Re: kern/46961: Please support BCM57762 Ethernet arapter(Apple'sThunderbolt Ethernet Adapter)
The following reply was made to PR kern/46961; it has been noted by GNATS.
From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
Cc: gnats-bugs%NetBSD.org@localhost, tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: kern/46961: Please support BCM57762 Ethernet
Date: Tue, 18 Sep 2012 23:24:59 +0900
> > > One possibility is for supporting PPPoE.
> > I've already checked that sys/net/if_pppoe.c has:
> > >> #define PPPOE_MAXMTU (ETHERMTU - PPPOE_OVERHEAD)
> > :
> > >> sc->sc_sppp.pp_if.if_mtu = PPPOE_MAXMTU;
> > so I guess pppoe packets won't be larger than ETHER_MAX_LEN.
> Not usually, but it would be very useful to allow the encasulation
> of full sized ethernet packets.
> Some routers (and ISP side kit) support it.
If such optional encapsulation that requires hardware and
driver support isn't defined in MI sys/net/if_ether.h,
it means "we don't support it" and no worth to tweak
individual drivers for it (and it isn't relevant to this PR).
Please open a new PR if you really want to support new features.
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