Merge remote branch 'origin/master'

[deliverable/linux.git] / drivers / net / s2io.c

diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 668327ccd8d0f8c29f60b974234efaa6a51e5859..1d37f0c310ca4bd91d715129f24a11356ad41fa1 100644 (file)
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -3130,7 +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);
 
@@ -4901,48 +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;
 }
@@ -7455,15 +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;
@@ -7472,7 +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);
        }