RDMA/nes: Have ethtool read hardware registers for rx/tx stats

Enhance ethtool to read hardware registers for rcv/tx error stats.
Also add support for free pbl resources.  Remove cq depth stats, which
are not used.

Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 55 insertions, 17 deletions

diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c
index 9f4cadf9f851..242f42d8c1c6 100644
--- a/drivers/infiniband/hw/nes/nes_nic.c
+++ b/drivers/infiniband/hw/nes/nes_nic.c
@@ -1002,6 +1002,7 @@ static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu)
         return ret;
 }
 
+
 static const char nes_ethtool_stringset[][ETH_GSTRING_LEN] = {
         "Link Change Interrupts",
         "Linearized SKBs",
@@ -1016,11 +1017,15 @@ static const char nes_ethtool_stringset[][ETH_GSTRING_LEN] = {
         "Rx Jabber Errors",
         "Rx Oversized Frames",
         "Rx Short Frames",
+        "Rx Length Errors",
+        "Rx CRC Errors",
+        "Rx Port Discard",
         "Endnode Rx Discards",
         "Endnode Rx Octets",
         "Endnode Rx Frames",
         "Endnode Tx Octets",
         "Endnode Tx Frames",
+        "Tx Errors",
         "mh detected",
         "mh pauses",
         "Retransmission Count",
@@ -1049,19 +1054,13 @@ static const char nes_ethtool_stringset[][ETH_GSTRING_LEN] = {
         "CM Nodes Destroyed",
         "CM Accel Drops",
         "CM Resets Received",
+        "Free 4Kpbls",
+        "Free 256pbls",
         "Timer Inits",
-        "CQ Depth 1",
-        "CQ Depth 4",
-        "CQ Depth 16",
-        "CQ Depth 24",
-        "CQ Depth 32",
-        "CQ Depth 128",
-        "CQ Depth 256",
         "LRO aggregated",
         "LRO flushed",
         "LRO no_desc",
 };
-
 #define NES_ETHTOOL_STAT_COUNT  ARRAY_SIZE(nes_ethtool_stringset)
 
 /**
@@ -1121,12 +1120,14 @@ static void nes_netdev_get_strings(struct net_device *netdev, u32 stringset,
 /**
  * nes_netdev_get_ethtool_stats
  */
+
 static void nes_netdev_get_ethtool_stats(struct net_device *netdev,
                 struct ethtool_stats *target_ethtool_stats, u64 *target_stat_values)
 {
         u64 u64temp;
         struct nes_vnic *nesvnic = netdev_priv(netdev);
         struct nes_device *nesdev = nesvnic->nesdev;
+        struct nes_adapter *nesadapter = nesdev->nesadapter;
         u32 nic_count;
         u32 u32temp;
         u32 index = 0;
@@ -1155,6 +1156,46 @@ static void nes_netdev_get_ethtool_stats(struct net_device *netdev,
         nesvnic->nesdev->port_tx_discards += u32temp;
         nesvnic->netstats.tx_dropped += u32temp;
 
+        u32temp = nes_read_indexed(nesdev,
+                        NES_IDX_MAC_RX_SHORT_FRAMES + (nesvnic->nesdev->mac_index*0x200));
+        nesvnic->netstats.rx_dropped += u32temp;
+        nesvnic->nesdev->mac_rx_errors += u32temp;
+        nesvnic->nesdev->mac_rx_short_frames += u32temp;
+
+        u32temp = nes_read_indexed(nesdev,
+                        NES_IDX_MAC_RX_OVERSIZED_FRAMES + (nesvnic->nesdev->mac_index*0x200));
+        nesvnic->netstats.rx_dropped += u32temp;
+        nesvnic->nesdev->mac_rx_errors += u32temp;
+        nesvnic->nesdev->mac_rx_oversized_frames += u32temp;
+
+        u32temp = nes_read_indexed(nesdev,
+                        NES_IDX_MAC_RX_JABBER_FRAMES + (nesvnic->nesdev->mac_index*0x200));
+        nesvnic->netstats.rx_dropped += u32temp;
+        nesvnic->nesdev->mac_rx_errors += u32temp;
+        nesvnic->nesdev->mac_rx_jabber_frames += u32temp;
+
+        u32temp = nes_read_indexed(nesdev,
+                        NES_IDX_MAC_RX_SYMBOL_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
+        nesvnic->netstats.rx_dropped += u32temp;
+        nesvnic->nesdev->mac_rx_errors += u32temp;
+        nesvnic->nesdev->mac_rx_symbol_err_frames += u32temp;
+
+        u32temp = nes_read_indexed(nesdev,
+                        NES_IDX_MAC_RX_LENGTH_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
+        nesvnic->netstats.rx_length_errors += u32temp;
+        nesvnic->nesdev->mac_rx_errors += u32temp;
+
+        u32temp = nes_read_indexed(nesdev,
+                        NES_IDX_MAC_RX_CRC_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
+        nesvnic->nesdev->mac_rx_errors += u32temp;
+        nesvnic->nesdev->mac_rx_crc_errors += u32temp;
+        nesvnic->netstats.rx_crc_errors += u32temp;
+
+        u32temp = nes_read_indexed(nesdev,
+                        NES_IDX_MAC_TX_ERRORS + (nesvnic->nesdev->mac_index*0x200));
+        nesvnic->nesdev->mac_tx_errors += u32temp;
+        nesvnic->netstats.tx_errors += u32temp;
+
         for (nic_count = 0; nic_count < NES_MAX_PORT_COUNT; nic_count++) {
                 if (nesvnic->qp_nic_index[nic_count] == 0xf)
                         break;
@@ -1219,11 +1260,15 @@ static void nes_netdev_get_ethtool_stats(struct net_device *netdev,
         target_stat_values[++index] = nesvnic->nesdev->mac_rx_jabber_frames;
         target_stat_values[++index] = nesvnic->nesdev->mac_rx_oversized_frames;
         target_stat_values[++index] = nesvnic->nesdev->mac_rx_short_frames;
+        target_stat_values[++index] = nesvnic->netstats.rx_length_errors;
+        target_stat_values[++index] = nesvnic->nesdev->mac_rx_crc_errors;
+        target_stat_values[++index] = nesvnic->nesdev->port_rx_discards;
         target_stat_values[++index] = nesvnic->endnode_nstat_rx_discard;
         target_stat_values[++index] = nesvnic->endnode_nstat_rx_octets;
         target_stat_values[++index] = nesvnic->endnode_nstat_rx_frames;
         target_stat_values[++index] = nesvnic->endnode_nstat_tx_octets;
         target_stat_values[++index] = nesvnic->endnode_nstat_tx_frames;
+        target_stat_values[++index] = nesvnic->nesdev->mac_tx_errors;
         target_stat_values[++index] = mh_detected;
         target_stat_values[++index] = mh_pauses_sent;
         target_stat_values[++index] = nesvnic->endnode_ipv4_tcp_retransmits;
@@ -1252,21 +1297,14 @@ static void nes_netdev_get_ethtool_stats(struct net_device *netdev,
         target_stat_values[++index] = atomic_read(&cm_nodes_destroyed);
         target_stat_values[++index] = atomic_read(&cm_accel_dropped_pkts);
         target_stat_values[++index] = atomic_read(&cm_resets_recvd);
+        target_stat_values[++index] = nesadapter->free_4kpbl;
+        target_stat_values[++index] = nesadapter->free_256pbl;
         target_stat_values[++index] = int_mod_timer_init;
-        target_stat_values[++index] = int_mod_cq_depth_1;
-        target_stat_values[++index] = int_mod_cq_depth_4;
-        target_stat_values[++index] = int_mod_cq_depth_16;
-        target_stat_values[++index] = int_mod_cq_depth_24;
-        target_stat_values[++index] = int_mod_cq_depth_32;
-        target_stat_values[++index] = int_mod_cq_depth_128;
-        target_stat_values[++index] = int_mod_cq_depth_256;
         target_stat_values[++index] = nesvnic->lro_mgr.stats.aggregated;
         target_stat_values[++index] = nesvnic->lro_mgr.stats.flushed;
         target_stat_values[++index] = nesvnic->lro_mgr.stats.no_desc;
-
 }
 
-
 /**
  * nes_netdev_get_drvinfo
  */