1 files changed, 70 insertions, 46 deletions

diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 92ae8d3de39b..1d37f0c310ca 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -2400,7 +2400,7 @@ static struct sk_buff *s2io_txdl_getskb(struct fifo_info *fifo_data,
 		return NULL;
 	}
 	pci_unmap_single(nic->pdev, (dma_addr_t)txds->Buffer_Pointer,
-			 skb->len - skb->data_len, PCI_DMA_TODEVICE);
+			 skb_headlen(skb), PCI_DMA_TODEVICE);
 	frg_cnt = skb_shinfo(skb)->nr_frags;
 	if (frg_cnt) {
 		txds++;
@@ -2943,7 +2943,6 @@ static void s2io_netpoll(struct net_device *dev)
 		}
 	}
 	enable_irq(dev->irq);
-	return;
 }
 #endif
 
@@ -3131,7 +3130,6 @@ static void tx_intr_handler(struct fifo_info *fifo_data)
 		pkt_cnt++;
 
 		/* Updating the statistics block */
-		nic->dev->stats.tx_bytes += skb->len;
 		swstats->mem_freed += skb->truesize;
 		dev_kfree_skb_irq(skb);
 
@@ -4202,7 +4200,7 @@ static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
 		txdp->Control_2 |= TXD_VLAN_TAG(vlan_tag);
 	}
 
-	frg_len = skb->len - skb->data_len;
+	frg_len = skb_headlen(skb);
 	if (offload_type == SKB_GSO_UDP) {
 		int ufo_size;
 
@@ -4756,7 +4754,6 @@ reset:
 	s2io_stop_all_tx_queue(sp);
 	schedule_work(&sp->rst_timer_task);
 	sw_stat->soft_reset_cnt++;
-	return;
 }
 
 /**
@@ -4903,48 +4900,81 @@ static void s2io_updt_stats(struct s2io_nic *sp)
  *  Return value:
  *  pointer to the updated net_device_stats structure.
  */
-
 static struct net_device_stats *s2io_get_stats(struct net_device *dev)
 {
 	struct s2io_nic *sp = netdev_priv(dev);
-	struct config_param *config = &sp->config;
 	struct mac_info *mac_control = &sp->mac_control;
 	struct stat_block *stats = mac_control->stats_info;
-	int i;
+	u64 delta;
 
 	/* Configure Stats for immediate updt */
 	s2io_updt_stats(sp);
 
-	/* Using sp->stats as a staging area, because reset (due to mtu
-	   change, for example) will clear some hardware counters */
-	dev->stats.tx_packets += le32_to_cpu(stats->tmac_frms) -
-		sp->stats.tx_packets;
-	sp->stats.tx_packets = le32_to_cpu(stats->tmac_frms);
-
-	dev->stats.tx_errors += le32_to_cpu(stats->tmac_any_err_frms) -
-		sp->stats.tx_errors;
-	sp->stats.tx_errors = le32_to_cpu(stats->tmac_any_err_frms);
-
-	dev->stats.rx_errors += le64_to_cpu(stats->rmac_drop_frms) -
-		sp->stats.rx_errors;
-	sp->stats.rx_errors = le64_to_cpu(stats->rmac_drop_frms);
-
-	dev->stats.multicast = le32_to_cpu(stats->rmac_vld_mcst_frms) -
-		sp->stats.multicast;
-	sp->stats.multicast = le32_to_cpu(stats->rmac_vld_mcst_frms);
-
-	dev->stats.rx_length_errors = le64_to_cpu(stats->rmac_long_frms) -
-		sp->stats.rx_length_errors;
-	sp->stats.rx_length_errors = le64_to_cpu(stats->rmac_long_frms);
+	/* A device reset will cause the on-adapter statistics to be zero'ed.
+	 * This can be done while running by changing the MTU.  To prevent the
+	 * system from having the stats zero'ed, the driver keeps a copy of the
+	 * last update to the system (which is also zero'ed on reset).  This
+	 * enables the driver to accurately know the delta between the last
+	 * update and the current update.
+	 */
+	delta = ((u64) le32_to_cpu(stats->rmac_vld_frms_oflow) << 32 |
+		le32_to_cpu(stats->rmac_vld_frms)) - sp->stats.rx_packets;
+	sp->stats.rx_packets += delta;
+	dev->stats.rx_packets += delta;
+
+	delta = ((u64) le32_to_cpu(stats->tmac_frms_oflow) << 32 |
+		le32_to_cpu(stats->tmac_frms)) - sp->stats.tx_packets;
+	sp->stats.tx_packets += delta;
+	dev->stats.tx_packets += delta;
+
+	delta = ((u64) le32_to_cpu(stats->rmac_data_octets_oflow) << 32 |
+		le32_to_cpu(stats->rmac_data_octets)) - sp->stats.rx_bytes;
+	sp->stats.rx_bytes += delta;
+	dev->stats.rx_bytes += delta;
+
+	delta = ((u64) le32_to_cpu(stats->tmac_data_octets_oflow) << 32 |
+		le32_to_cpu(stats->tmac_data_octets)) - sp->stats.tx_bytes;
+	sp->stats.tx_bytes += delta;
+	dev->stats.tx_bytes += delta;
+
+	delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_errors;
+	sp->stats.rx_errors += delta;
+	dev->stats.rx_errors += delta;
+
+	delta = ((u64) le32_to_cpu(stats->tmac_any_err_frms_oflow) << 32 |
+		le32_to_cpu(stats->tmac_any_err_frms)) - sp->stats.tx_errors;
+	sp->stats.tx_errors += delta;
+	dev->stats.tx_errors += delta;
+
+	delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_dropped;
+	sp->stats.rx_dropped += delta;
+	dev->stats.rx_dropped += delta;
+
+	delta = le64_to_cpu(stats->tmac_drop_frms) - sp->stats.tx_dropped;
+	sp->stats.tx_dropped += delta;
+	dev->stats.tx_dropped += delta;
+
+	/* The adapter MAC interprets pause frames as multicast packets, but
+	 * does not pass them up.  This erroneously increases the multicast
+	 * packet count and needs to be deducted when the multicast frame count
+	 * is queried.
+	 */
+	delta = (u64) le32_to_cpu(stats->rmac_vld_mcst_frms_oflow) << 32 |
+		le32_to_cpu(stats->rmac_vld_mcst_frms);
+	delta -= le64_to_cpu(stats->rmac_pause_ctrl_frms);
+	delta -= sp->stats.multicast;
+	sp->stats.multicast += delta;
+	dev->stats.multicast += delta;
 
-	/* collect per-ring rx_packets and rx_bytes */
-	dev->stats.rx_packets = dev->stats.rx_bytes = 0;
-	for (i = 0; i < config->rx_ring_num; i++) {
-		struct ring_info *ring = &mac_control->rings[i];
+	delta = ((u64) le32_to_cpu(stats->rmac_usized_frms_oflow) << 32 |
+		le32_to_cpu(stats->rmac_usized_frms)) +
+		le64_to_cpu(stats->rmac_long_frms) - sp->stats.rx_length_errors;
+	sp->stats.rx_length_errors += delta;
+	dev->stats.rx_length_errors += delta;
 
-		dev->stats.rx_packets += ring->rx_packets;
-		dev->stats.rx_bytes += ring->rx_bytes;
-	}
+	delta = le64_to_cpu(stats->rmac_fcs_err_frms) - sp->stats.rx_crc_errors;
+	sp->stats.rx_crc_errors += delta;
+	dev->stats.rx_crc_errors += delta;
 
 	return &dev->stats;
 }
@@ -4965,7 +4995,7 @@ static struct net_device_stats *s2io_get_stats(struct net_device *dev)
 static void s2io_set_multicast(struct net_device *dev)
 {
 	int i, j, prev_cnt;
-	struct dev_mc_list *mclist;
+	struct netdev_hw_addr *ha;
 	struct s2io_nic *sp = netdev_priv(dev);
 	struct XENA_dev_config __iomem *bar0 = sp->bar0;
 	u64 val64 = 0, multi_mac = 0x010203040506ULL, mask =
@@ -5094,12 +5124,12 @@ static void s2io_set_multicast(struct net_device *dev)
 
 		/* Create the new Rx filter list and update the same in H/W. */
 		i = 0;
-		netdev_for_each_mc_addr(mclist, dev) {
-			memcpy(sp->usr_addrs[i].addr, mclist->dmi_addr,
+		netdev_for_each_mc_addr(ha, dev) {
+			memcpy(sp->usr_addrs[i].addr, ha->addr,
 			       ETH_ALEN);
 			mac_addr = 0;
 			for (j = 0; j < ETH_ALEN; j++) {
-				mac_addr |= mclist->dmi_addr[j];
+				mac_addr |= ha->addr[j];
 				mac_addr <<= 8;
 			}
 			mac_addr >>= 8;
@@ -7457,15 +7487,11 @@ static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
 		}
 	}
 
-	/* Updating statistics */
-	ring_data->rx_packets++;
 	rxdp->Host_Control = 0;
 	if (sp->rxd_mode == RXD_MODE_1) {
 		int len = RXD_GET_BUFFER0_SIZE_1(rxdp->Control_2);
 
-		ring_data->rx_bytes += len;
 		skb_put(skb, len);
-
 	} else if (sp->rxd_mode == RXD_MODE_3B) {
 		int get_block = ring_data->rx_curr_get_info.block_index;
 		int get_off = ring_data->rx_curr_get_info.offset;
@@ -7474,7 +7500,6 @@ static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
 		unsigned char *buff = skb_push(skb, buf0_len);
 
 		struct buffAdd *ba = &ring_data->ba[get_block][get_off];
-		ring_data->rx_bytes += buf0_len + buf2_len;
 		memcpy(buff, ba->ba_0, buf0_len);
 		skb_put(skb, buf2_len);
 	}
@@ -8645,7 +8670,6 @@ static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
 	first->truesize += skb->truesize;
 	lro->last_frag = skb;
 	swstats->clubbed_frms_cnt++;
-	return;
 }
 
 /**