netxen: fix rx dropped stats

Don't count rx dropped packets based on return value of netif_receive_skb(),
which is misleading.
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Tested-by: Vernon Mauery <mauery@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/netxen/netxen_nic.h

@@ -818,12 +818,7 @@ struct netxen_adapter_stats {
 	u64  badskblen;
 	u64  nocmddescriptor;
 	u64  polled;
-	u64  uphappy;
-	u64  updropped;
-	u64  uplcong;
-	u64  uphcong;
-	u64  upmcong;
-	u64  updunno;
+	u64  rxdropped;
 	u64  txdropped;
 	u64  csummed;
 	u64  no_rcv;

drivers/net/netxen/netxen_nic_ethtool.c

@@ -64,12 +64,6 @@ static const struct netxen_nic_stats netxen_nic_gstrings_stats[] = {
 	{"bad_skb_len", NETXEN_NIC_STAT(stats.badskblen)},
 	{"no_cmd_desc", NETXEN_NIC_STAT(stats.nocmddescriptor)},
 	{"polled", NETXEN_NIC_STAT(stats.polled)},
-	{"uphappy", NETXEN_NIC_STAT(stats.uphappy)},
-	{"updropped", NETXEN_NIC_STAT(stats.updropped)},
-	{"uplcong", NETXEN_NIC_STAT(stats.uplcong)},
-	{"uphcong", NETXEN_NIC_STAT(stats.uphcong)},
-	{"upmcong", NETXEN_NIC_STAT(stats.upmcong)},
-	{"updunno", NETXEN_NIC_STAT(stats.updunno)},
 	{"tx_dropped", NETXEN_NIC_STAT(stats.txdropped)},
 	{"csummed", NETXEN_NIC_STAT(stats.csummed)},
 	{"no_rcv", NETXEN_NIC_STAT(stats.no_rcv)},

drivers/net/netxen/netxen_nic_init.c

@@ -1089,7 +1089,7 @@ static void netxen_process_rcv(struct netxen_adapter *adapter, int ctxid,
 	skb = (struct sk_buff *)buffer->skb;
 
 	if (likely(adapter->rx_csum &&
-				netxen_get_sts_status(sts_data) == STATUS_CKSUM_OK)) {
+			netxen_get_sts_status(sts_data) == STATUS_CKSUM_OK)) {
 		adapter->stats.csummed++;
 		skb->ip_summed = CHECKSUM_UNNECESSARY;
 	} else
@@ -1106,37 +1106,6 @@ static void netxen_process_rcv(struct netxen_adapter *adapter, int ctxid,
 	skb->protocol = eth_type_trans(skb, netdev);
 
 	ret = netif_receive_skb(skb);
-
-	/*
-	 * RH: Do we need these stats on a regular basis. Can we get it from
-	 * Linux stats.
-	 */
-	switch (ret) {
-	case NET_RX_SUCCESS:
-		adapter->stats.uphappy++;
-		break;
-
-	case NET_RX_CN_LOW:
-		adapter->stats.uplcong++;
-		break;
-
-	case NET_RX_CN_MOD:
-		adapter->stats.upmcong++;
-		break;
-
-	case NET_RX_CN_HIGH:
-		adapter->stats.uphcong++;
-		break;
-
-	case NET_RX_DROP:
-		adapter->stats.updropped++;
-		break;
-
-	default:
-		adapter->stats.updunno++;
-		break;
-	}
-
 	netdev->last_rx = jiffies;
 
 	rcv_desc->rcv_pending--;

drivers/net/netxen/netxen_nic_isr.c

@@ -59,7 +59,7 @@ struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
 	/* packet transmit problems */
 	stats->tx_errors = adapter->stats.nocmddescriptor;
 	/* no space in linux buffers    */
-	stats->rx_dropped = adapter->stats.updropped;
+	stats->rx_dropped = adapter->stats.rxdropped;
 	/* no space available in linux  */
 	stats->tx_dropped = adapter->stats.txdropped;