PERFORCE change 146961 for review

[Weongyo Jeong]

http://perforce.freebsd.org/chv.cgi?CH=146961

Change 146961 by weongyo at weongyo_ws on 2008/08/09 08:06:00

	fix a memory alignment problem on sparc64.  With this fix upgt(4)
	works on sparc64 also.
	
	Submitted by:	yongari

Affected files ...

.. //depot/projects/vap/sys/dev/usb/if_upgt.c#2 edit

Differences ...

==== //depot/projects/vap/sys/dev/usb/if_upgt.c#2 (text+ko) ====

@@ -1719,15 +1719,16 @@
 	/* create mbuf which is suitable for strict alignment archs */
 	KASSERT((pkglen + ETHER_ALIGN) < MCLBYTES,
 	    ("A current mbuf storage is small (%d)", pkglen + ETHER_ALIGN));
-	m = m_devget(rxdesc->data - ETHER_ALIGN, pkglen + ETHER_ALIGN, 0, ifp,
-	    NULL);
+	m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 	if (m == NULL) {
 		device_printf(sc->sc_dev, "could not create RX mbuf!\n");
 		return;
 	}
 	m_adj(m, ETHER_ALIGN);
+	bcopy(rxdesc->data, mtod(m, char *), pkglen);
 	/* trim FCS */
-	m_adj(m, -IEEE80211_CRC_LEN);
+	m->m_len = m->m_pkthdr.len = pkglen - IEEE80211_CRC_LEN;
+	m->m_pkthdr.rcvif = ifp;
 
 	if (bpf_peers_present(ifp->if_bpf)) {
 		struct upgt_rx_radiotap_header *tap = &sc->sc_rxtap;