[src/trunk]: src/sys/rump/net/lib/libshmif In recv, align data after ether_he...

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f5816883a423
branches:  trunk
changeset: 788836:f5816883a423
user:      pooka <pooka%NetBSD.org@localhost>
date:      Mon Jul 22 21:12:03 2013 +0000

description:
In recv, align data after ether_header at _ALIGN_BYTES.

diffstat:

 sys/rump/net/lib/libshmif/if_shmem.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (35 lines):

diff -r 8529cf671cdf -r f5816883a423 sys/rump/net/lib/libshmif/if_shmem.c
--- a/sys/rump/net/lib/libshmif/if_shmem.c      Mon Jul 22 19:43:54 2013 +0000
+++ b/sys/rump/net/lib/libshmif/if_shmem.c      Mon Jul 22 21:12:03 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_shmem.c,v 1.56 2013/06/14 05:59:50 pooka Exp $      */
+/*     $NetBSD: if_shmem.c,v 1.57 2013/07/22 21:12:03 pooka Exp $      */
 
 /*
  * Copyright (c) 2009, 2010 Antti Kantee.  All Rights Reserved.
@@ -28,7 +28,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_shmem.c,v 1.56 2013/06/14 05:59:50 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_shmem.c,v 1.57 2013/07/22 21:12:03 pooka Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -647,6 +647,8 @@
        uint32_t nextpkt;
        bool wrap, passup;
        int error;
+       const int align
+           = ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header);
 
  reup:
        mutex_enter(&sc->sc_mtx);
@@ -662,6 +664,7 @@
                if (m == NULL) {
                        m = m_gethdr(M_WAIT, MT_DATA);
                        MCLGET(m, M_WAIT);
+                       m->m_data += align;
                }
 
                DPRINTF(("waiting %d/%" PRIu64 "\n",