diff options
| author | Niklas Hallqvist <niklas@cvs.openbsd.org> | 2002-02-25 08:48:31 +0000 |
|---|---|---|
| committer | Niklas Hallqvist <niklas@cvs.openbsd.org> | 2002-02-25 08:48:31 +0000 |
| commit | e5c48cc8c5117d612e93f57c999722ed364ceb92 (patch) | |
| tree | 06488aec236f473c2622bf33545097e5857d8dd8 /sys/dev/ic | |
| parent | 8989b0a4b9743c57ec3efe375fb445cb64aba970 (diff) | |
Accept ethernet broadcasts too :-) This patch contains a copy of
ether_crc32_le from NetBSD, which might be bettter placed in if_ethersubr.c
later, if any other driver needs it.
Diffstat (limited to 'sys/dev/ic')
| -rw-r--r-- | sys/dev/ic/lemac.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/sys/dev/ic/lemac.c b/sys/dev/ic/lemac.c index e31b3476adb..63452a50111 100644 --- a/sys/dev/ic/lemac.c +++ b/sys/dev/ic/lemac.c @@ -1,4 +1,4 @@ -/* $OpenBSD: lemac.c,v 1.1 2001/07/13 17:26:44 niklas Exp $ */ +/* $OpenBSD: lemac.c,v 1.2 2002/02/25 08:48:30 niklas Exp $ */ /* $NetBSD: lemac.c,v 1.20 2001/06/13 10:46:02 wiz Exp $ */ /*- @@ -77,6 +77,9 @@ #include <net/bpf.h> #endif +/* XXX Should be in if_ethersubr.c */ +u_int32_t ether_crc32_le(const u_int8_t *, size_t); + int lemac_ifioctl(struct ifnet *, u_long, caddr_t); int lemac_ifmedia_change(struct ifnet *const); void lemac_ifmedia_status(struct ifnet *const, struct ifmediareq *); @@ -446,7 +449,30 @@ lemac_read_macaddr(unsigned char *hwaddr, const bus_space_tag_t iot, return (0); } -#if 0 +/* XXX Should be moved to if_ethersubr.c */ +u_int32_t +ether_crc32_le(const u_int8_t *buf, size_t len) +{ + static const u_int32_t crctab[] = { + 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac, + 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, + 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, + 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c + }; + u_int32_t crc; + int i; + + crc = 0xffffffffU; /* initial value */ + + for (i = 0; i < len; i++) { + crc ^= buf[i]; + crc = (crc >> 4) ^ crctab[crc & 0xf]; + crc = (crc >> 4) ^ crctab[crc & 0xf]; + } + + return (crc); +} + void lemac_multicast_op(u_int16_t *mctbl, const u_char *mca, int enable) { @@ -476,7 +502,6 @@ lemac_multicast_op(u_int16_t *mctbl, const u_char *mca, int enable) mctbl[idx] &= ~bit; /* Clear Bit */ } } -#endif void lemac_multicast_filter(struct lemac_softc *sc) @@ -488,9 +513,9 @@ lemac_multicast_filter(struct lemac_softc *sc) bzero(sc->sc_mctbl, LEMAC_MCTBL_BITS / 8); -#if 0 lemac_multicast_op(sc->sc_mctbl, etherbroadcastaddr, 1); +#if 0 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); while (enm != NULL) { if (!LEMAC_ADDREQUAL(enm->enm_addrlo, enm->enm_addrhi)) { |