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net: korina: optimize rx descriptor flags processing 

Signed-off-by: Roman Yeryomin <roman@advem.lv>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roman Yeryomin 2017-09-17 20:24:26 +03:00 committed by David S. Miller
parent 7ce103b4cb
commit 364a97f5d1
1 changed files with 50 additions and 49 deletions
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27
drivers/net/ethernet/korina.c
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@ -363,11 +363,18 @@ static int korina_rx(struct net_device *dev, int limit)
if ((KORINA_RBSIZE - (u32)DMA_COUNT(rd->control)) == 0)
break;
/* check that this is a whole packet
* WARNING: DMA_FD bit incorrectly set
* in Rc32434 (errata ref #077) */
if (!(devcs & ETH_RX_LD))
goto next;
if (!(devcs & ETH_RX_ROK)) {
/* Update statistics counters */
dev->stats.rx_errors++;
dev->stats.rx_dropped++;
if (devcs & ETH_RX_CRC)
dev->stats.rx_crc_errors++;
if (devcs & ETH_RX_LOR)
dev->stats.rx_length_errors++;
if (devcs & ETH_RX_LE)
dev->stats.rx_length_errors++;
if (devcs & ETH_RX_OVR)
@ -375,17 +382,11 @@ static int korina_rx(struct net_device *dev, int limit)
if (devcs & ETH_RX_CV)
dev->stats.rx_frame_errors++;
if (devcs & ETH_RX_CES)
dev->stats.rx_length_errors++;
if (devcs & ETH_RX_MP)
dev->stats.multicast++;
dev->stats.rx_frame_errors++;
goto next;
}
if ((devcs & ETH_RX_LD) != ETH_RX_LD) {
/* check that this is a whole packet
* WARNING: DMA_FD bit incorrectly set
* in Rc32434 (errata ref #077) */
dev->stats.rx_errors++;
dev->stats.rx_dropped++;
} else if ((devcs & ETH_RX_ROK)) {
pkt_len = RCVPKT_LENGTH(devcs);
/* must be the (first and) last
@ -414,8 +415,8 @@ static int korina_rx(struct net_device *dev, int limit)
dev->stats.multicast++;
lp->rx_skb[lp->rx_next_done] = skb_new;
}
next:
rd->devcs = 0;
/* Restore descriptor's curr_addr */