tweak the alignment of the rx buffers so the headers in the frame are

better aligned for fast access. i didnt bench, so maybe this does nothing.

diff --git a/sys/dev/pci/if_vic.c b/sys/dev/pci/if_vic.c
index f4024e7..8f44095 100644 (file)
--- a/sys/dev/pci/if_vic.c
+++ b/sys/dev/pci/if_vic.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: if_vic.c,v 1.52 2007/11/28 11:13:47 reyk Exp $        */
+/*     $OpenBSD: if_vic.c,v 1.53 2008/07/07 00:42:34 dlg Exp $ */
 
 /*
  * Copyright (c) 2006 Reyk Floeter <reyk@openbsd.org>
@@ -1337,7 +1337,8 @@ vic_alloc_mbuf(struct vic_softc *sc, bus_dmamap_t map)
                m_freem(m);
                return (NULL);
        }
-       m->m_len = m->m_pkthdr.len = MCLBYTES;
+       m->m_data += ETHER_ALIGN;
+       m->m_len = m->m_pkthdr.len = MCLBYTES - ETHER_ALIGN;
 
        if (bus_dmamap_load_mbuf(sc->sc_dmat, map, m, BUS_DMA_NOWAIT) != 0) {
                printf("%s: could not load mbuf DMA map", DEVNAME(sc));