Author: ticso
Date: Mon Feb 7 01:13:57 2011
New Revision: 218387
URL: http://svn.freebsd.org/changeset/base/218387
Log:
unbreak mutlicast hash creation for the second time.
at91_emac hardware is *not* using ether_crc32_be algorithm!
Modified:
head/sys/arm/at91/if_ate.c
Modified: head/sys/arm/at91/if_ate.c
==============================================================================
--- head/sys/arm/at91/if_ate.c Sun Feb 6 23:34:09 2011 (r218386)
+++ head/sys/arm/at91/if_ate.c Mon Feb 7 01:13:57 2011 (r218387)
@@ -433,6 +433,16 @@ ate_load_rx_buf(void *arg, bus_dma_segme
bus_dmamap_sync(sc->rx_desc_tag, sc->rx_desc_map,
BUS_DMASYNC_POSTWRITE);
}
+static uint32_t
+ate_mac_hash(const uint8_t *buf)
+{
+ uint32_t index = 0;
+ for (int i = 0; i < 48; i++) {
+ index ^= ((buf[i >> 3] >> (i & 7)) & 1) << (i % 6);
+ }
+ return (index);
+}
+
/*
* Compute the multicast filter for this device.
*/
@@ -462,8 +472,8 @@ ate_setmcast(struct ate_softc *sc)
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
- index = ether_crc32_be(LLADDR((struct sockaddr_dl *)
- ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
+ index = ate_mac_hash(LLADDR((struct sockaddr_dl *)
+ ifma->ifma_addr));
af[index >> 3] |= 1 << (index & 7);
}
if_maddr_runlock(ifp);
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