Date: Mon, 24 Jan 2011 09:05:48 -0800 From: "Huang, Yusheng" <yusheng.huang@bluecoat.com> To: <net@freebsd.org> Subject: nfe support for jumbo frame Message-ID: <B583FBF374231F4A89607B4D08578A4308BA3C86@bcs-mail03.internal.cacheflow.com>
next in thread | raw e-mail | index | archive | help
Hi all,
We have ported nfe driver to our product and when we try to set mtu to =
9000 on nfe interface, it does not work. No jumbo frame buffer were =
allocated. Looking at the code, we found the following:
In nfe_ioctl:
else {
NFE_LOCK(sc);
ifp->if_mtu =3D ifr->ifr_mtu;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) !=3D 0) =3D=3D> if =
IFF_DRV_RUNNING is set, call nfe_init_locked
nfe_init_locked(sc);
NFE_UNLOCK(sc);
}
However, in nfe_init_locked, it has the following test:
NFE_LOCK_ASSERT(sc);
mii =3D device_get_softc(sc->nfe_miibus);
if (ifp->if_drv_flags & IFF_DRV_RUNNING) =3D=3D> if IFF_DRV_RUNNING is =
set, return
return;
nfe_stop(ifp);
sc->nfe_framesize =3D ifp->if_mtu + NFE_RX_HEADERS;
So it ends up doing nothing.
Is there something we missed totally on changing the mtu?
-yusheng
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?B583FBF374231F4A89607B4D08578A4308BA3C86>