From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50380) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fRGlk-000307-GZ for qemu-devel@nongnu.org; Fri, 08 Jun 2018 08:45:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fRGlj-0004DP-R8 for qemu-devel@nongnu.org; Fri, 08 Jun 2018 08:45:28 -0400 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:42590) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fRGlj-0004D2-Jj for qemu-devel@nongnu.org; Fri, 08 Jun 2018 08:45:27 -0400 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.89) (envelope-from ) id 1fRGli-0003fM-Hr for qemu-devel@nongnu.org; Fri, 08 Jun 2018 13:45:26 +0100 From: Peter Maydell Date: Fri, 8 Jun 2018 13:44:57 +0100 Message-Id: <20180608124517.29475-12-peter.maydell@linaro.org> In-Reply-To: <20180608124517.29475-1-peter.maydell@linaro.org> References: <20180608124517.29475-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PULL 11/31] ftgmac100: fix multicast hash routine List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Cédric Le Goater Based on the multicast hash calculation of the FTGMAC100 Linux driver. Signed-off-by: Cédric Le Goater Reviewed-by: Philippe Mathieu-Daudé Message-id: 20180530061711.23673-4-clg@kaod.org Signed-off-by: Peter Maydell --- hw/net/ftgmac100.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/net/ftgmac100.c b/hw/net/ftgmac100.c index abf80655f28..8a7f274dc11 100644 --- a/hw/net/ftgmac100.c +++ b/hw/net/ftgmac100.c @@ -776,8 +776,8 @@ static int ftgmac100_filter(FTGMAC100State *s, const uint8_t *buf, size_t len) return 0; } - /* TODO: this does not seem to work for ftgmac100 */ - mcast_idx = net_crc32(buf, ETH_ALEN) >> 26; + mcast_idx = net_crc32_le(buf, ETH_ALEN); + mcast_idx = (~(mcast_idx >> 2)) & 0x3f; if (!(s->math[mcast_idx / 32] & (1 << (mcast_idx % 32)))) { return 0; } -- 2.17.1