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if_sis.c (129876) if_sis.c (130270)
1/*
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
1/*
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/pci/if_sis.c 129876 2004-05-30 17:57:46Z phk $");
34__FBSDID("$FreeBSD: head/sys/pci/if_sis.c 130270 2004-06-09 14:34:04Z naddy $");
35
36/*
37 * SiS 900/SiS 7016 fast ethernet PCI NIC driver. Datasheets are
38 * available from http://www.sis.com.tw.
39 *
40 * This driver also supports the NatSemi DP83815. Datasheets are
41 * available from http://www.national.com.
42 *

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837 return;
838}
839
840static u_int32_t
841sis_mchash(sc, addr)
842 struct sis_softc *sc;
843 const uint8_t *addr;
844{
35
36/*
37 * SiS 900/SiS 7016 fast ethernet PCI NIC driver. Datasheets are
38 * available from http://www.sis.com.tw.
39 *
40 * This driver also supports the NatSemi DP83815. Datasheets are
41 * available from http://www.national.com.
42 *

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837 return;
838}
839
840static u_int32_t
841sis_mchash(sc, addr)
842 struct sis_softc *sc;
843 const uint8_t *addr;
844{
845 uint32_t crc, carry;
846 int idx, bit;
847 uint8_t data;
845 uint32_t crc;
848
849 /* Compute CRC for the address value. */
846
847 /* Compute CRC for the address value. */
850 crc = 0xFFFFFFFF; /* initial value */
848 crc = ether_crc32_be(addr, ETHER_ADDR_LEN);
851
849
852 for (idx = 0; idx < 6; idx++) {
853 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1) {
854 carry = ((crc & 0x80000000) ? 1 : 0) ^ (data & 0x01);
855 crc <<= 1;
856 if (carry)
857 crc = (crc ^ 0x04c11db6) | carry;
858 }
859 }
860
861 /*
862 * return the filter bit position
863 *
864 * The NatSemi chip has a 512-bit filter, which is
865 * different than the SiS, so we special-case it.
866 */
867 if (sc->sis_type == SIS_TYPE_83815)
868 return (crc >> 23);

--- 1603 unchanged lines hidden --- 		850 /*
851 * return the filter bit position
852 *
853 * The NatSemi chip has a 512-bit filter, which is
854 * different than the SiS, so we special-case it.
855 */
856 if (sc->sis_type == SIS_TYPE_83815)
857 return (crc >> 23);

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