[src/trunk]: src/sys/rump/net/lib/libshmif * increase bus size so that we don...

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

details:   https://anonhg.NetBSD.org/src/rev/a81f7f2b0da8
branches:  trunk
changeset: 756719:a81f7f2b0da8
user:      pooka <pooka%NetBSD.org@localhost>
date:      Thu Jul 29 18:30:39 2010 +0000

description:
* increase bus size so that we don't wrap so quickly when NFS
  flushes writes
* verbosize debug print a bit

diffstat:

 sys/rump/net/lib/libshmif/if_shmem.c |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (37 lines):

diff -r 2b4bf4950473 -r a81f7f2b0da8 sys/rump/net/lib/libshmif/if_shmem.c
--- a/sys/rump/net/lib/libshmif/if_shmem.c      Thu Jul 29 18:25:19 2010 +0000
+++ b/sys/rump/net/lib/libshmif/if_shmem.c      Thu Jul 29 18:30:39 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_shmem.c,v 1.10 2009/11/30 11:14:58 pooka Exp $      */
+/*     $NetBSD: if_shmem.c,v 1.11 2010/07/29 18:30:39 pooka Exp $      */
 
 /*
  * Copyright (c) 2009 Antti Kantee.  All Rights Reserved.
@@ -28,7 +28,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_shmem.c,v 1.10 2009/11/30 11:14:58 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_shmem.c,v 1.11 2010/07/29 18:30:39 pooka Exp $");
 
 #include <sys/param.h>
 #include <sys/fcntl.h>
@@ -83,7 +83,7 @@
 
 #define BUSCTRL_ATOFF(sc, off) ((uint32_t *)(sc->sc_busmem+(off)))
 
-#define BUSMEM_SIZE 65536 /* enough? */
+#define BUSMEM_SIZE (1024*1024) /* need write throttling? */
 
 static void shmif_rcv(void *);
 
@@ -345,7 +345,8 @@
                    || (busgen > sc->sc_prevgen+1)) {
                        nextpkt = lastpkt;
                        sc->sc_prevgen = busgen;
-                       rumpuser_dprintf("DROPPING\n");
+                       rumpuser_dprintf("shmif_rcv: generation overrun, "
+                           "skipping invalid packets\n");
                } else {
                        nextpkt = sc->sc_nextpacket;
                }