From 3a8e87ec2376f8844af1a1b924a19e151a85d65a Mon Sep 17 00:00:00 2001 From: dingtianhong Date: Mon, 30 Dec 2013 15:41:06 +0800 Subject: [PATCH] net: packetengines: slight optimization of addr Use possibly more efficient ether_addr_equal to instead of memcmp. Cc: "David S. Miller" Signed-off-by: Ding Tianhong Signed-off-by: David S. Miller --- drivers/net/ethernet/packetengines/yellowfin.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/packetengines/yellowfin.c b/drivers/net/ethernet/packetengines/yellowfin.c index 07a890eb72ad..9a6cb482dcd0 100644 --- a/drivers/net/ethernet/packetengines/yellowfin.c +++ b/drivers/net/ethernet/packetengines/yellowfin.c @@ -1053,7 +1053,7 @@ static int yellowfin_rx(struct net_device *dev) struct sk_buff *rx_skb = yp->rx_skbuff[entry]; s16 frame_status; u16 desc_status; - int data_size; + int data_size, yf_size; u8 *buf_addr; if(!desc->result_status) @@ -1070,6 +1070,9 @@ static int yellowfin_rx(struct net_device *dev) __func__, frame_status); if (--boguscnt < 0) break; + + yf_size = sizeof(struct yellowfin_desc); + if ( ! (desc_status & RX_EOP)) { if (data_size != 0) netdev_warn(dev, "Oversized Ethernet frame spanned multiple buffers, status %04x, data_size %d!\n", @@ -1096,12 +1099,12 @@ static int yellowfin_rx(struct net_device *dev) if (status2 & 0x80) dev->stats.rx_dropped++; #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ } else if ((yp->flags & HasMACAddrBug) && - memcmp(le32_to_cpu(yp->rx_ring_dma + - entry*sizeof(struct yellowfin_desc)), - dev->dev_addr, 6) != 0 && - memcmp(le32_to_cpu(yp->rx_ring_dma + - entry*sizeof(struct yellowfin_desc)), - "\377\377\377\377\377\377", 6) != 0) { + !ether_addr_equal(le32_to_cpu(yp->rx_ring_dma + + entry * yf_size), + dev->dev_addr) && + !ether_addr_equal(le32_to_cpu(yp->rx_ring_dma + + entry * yf_size), + "\377\377\377\377\377\377")) { if (bogus_rx++ == 0) netdev_warn(dev, "Bad frame to %pM\n", buf_addr); -- GitLab