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