[src/trunk]: src/sys/dev/sbus Use the common ether_crc32_le() function for mu...

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

details:   https://anonhg.NetBSD.org/src/rev/6e7e30964312
branches:  trunk
changeset: 747514:6e7e30964312
user:      tsutsui <tsutsui%NetBSD.org@localhost>
date:      Fri Sep 18 14:40:49 2009 +0000

description:
Use the common ether_crc32_le() function for multicast hash.

diffstat:

 sys/dev/sbus/be.c |  27 ++++++---------------------
 1 files changed, 6 insertions(+), 21 deletions(-)

diffs (58 lines):

diff -r 1ca402216bc3 -r 6e7e30964312 sys/dev/sbus/be.c
--- a/sys/dev/sbus/be.c Fri Sep 18 14:35:11 2009 +0000
+++ b/sys/dev/sbus/be.c Fri Sep 18 14:40:49 2009 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: be.c,v 1.73 2009/09/18 14:35:11 tsutsui Exp $  */
+/*     $NetBSD: be.c,v 1.74 2009/09/18 14:40:49 tsutsui Exp $  */
 
 /*-
  * Copyright (c) 1999 The NetBSD Foundation, Inc.
@@ -57,7 +57,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: be.c,v 1.73 2009/09/18 14:35:11 tsutsui Exp $");
+__KERNEL_RCSID(0, "$NetBSD: be.c,v 1.74 2009/09/18 14:40:49 tsutsui Exp $");
 
 #include "opt_ddb.h"
 #include "opt_inet.h"
@@ -1151,11 +1151,9 @@
        struct ifnet *ifp = &sc->sc_ethercom.ec_if;
        bus_space_tag_t t = sc->sc_bustag;
        bus_space_handle_t br = sc->sc_br;
+       uint32_t v;
        uint32_t crc;
        uint16_t hash[4];
-       uint8_t octet;
-       uint32_t v;
-       int i, j;
        struct ether_multi *enm;
        struct ether_multistep step;
 
@@ -1191,23 +1189,10 @@
                        goto chipit;
                }
 
-               crc = 0xffffffff;
-
-               for (i = 0; i < ETHER_ADDR_LEN; i++) {
-                       octet = enm->enm_addrlo[i];
+               crc = ether_crc32_le(enm->enm_addrlo, ETHER_ADDR_LEN);
+               /* Just want the 6 most significant bits. */
+               crc >>= 26;
 
-                       for (j = 0; j < 8; j++) {
-                               if ((crc & 1) ^ (octet & 1)) {
-                                       crc >>= 1;
-                                       crc ^= MC_POLY_LE;
-                               }
-                               else
-                                       crc >>= 1;
-                               octet >>= 1;
-                       }
-               }
-
-               crc >>= 26;
                hash[crc >> 4] |= 1 << (crc & 0xf);
                ETHER_NEXT_MULTI(step, enm);
        }