HFI VNIC driver statistics support maintains various counters including
standard netdev counters and the Ethernet manager defined counters.
Add the Ethtool hook to read the counters.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@xxxxxxxxx>
---
drivers/infiniband/ulp/hfi_vnic/hfi_vnic_ethtool.c | 128 +++++++++++++++++++++
.../infiniband/ulp/hfi_vnic/hfi_vnic_internal.h | 4 +
drivers/infiniband/ulp/hfi_vnic/hfi_vnic_netdev.c | 20 ++++
3 files changed, 152 insertions(+)
diff --git a/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_ethtool.c b/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_ethtool.c
index ca058a4..a9925df 100644
--- a/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_ethtool.c
+++ b/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_ethtool.c
@@ -53,9 +53,137 @@
#include "hfi_vnic_internal.h"
+enum {NETDEV_STATS, VNIC_STATS};
+
+struct vnic_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ struct {
+ int type;
+ int sizeof_stat;
+ int stat_offset;
+ };
+};
+
+#define VNIC_STAT(m) { VNIC_STATS, \
+ FIELD_SIZEOF(struct hfi_vnic_stats, m), \
+ offsetof(struct hfi_vnic_stats, m) }
+#define VNIC_NETDEV_STAT(m) { NETDEV_STATS, \
+ FIELD_SIZEOF(struct net_device, m), \
+ offsetof(struct net_device, m) }
+
+static struct vnic_stats vnic_gstrings_stats[] = {
+ /* NETDEV stats */
+ {"rx_packets", VNIC_NETDEV_STAT(stats.rx_packets)},
+ {"tx_packets", VNIC_NETDEV_STAT(stats.tx_packets)},
+ {"rx_bytes", VNIC_NETDEV_STAT(stats.rx_bytes)},
+ {"tx_bytes", VNIC_NETDEV_STAT(stats.tx_bytes)},
+ {"rx_errors", VNIC_NETDEV_STAT(stats.rx_errors)},
+ {"tx_errors", VNIC_NETDEV_STAT(stats.tx_errors)},
+ {"rx_dropped", VNIC_NETDEV_STAT(stats.rx_dropped)},
+ {"tx_dropped", VNIC_NETDEV_STAT(stats.tx_dropped)},
+
+ /* SUMMARY counters */
+ {"tx_unicast", VNIC_STAT(tx_grp.unicast)},
+ {"tx_mcastbcast", VNIC_STAT(tx_grp.mcastbcast)},
+ {"tx_untagged", VNIC_STAT(tx_grp.untagged)},
+ {"tx_vlan", VNIC_STAT(tx_grp.vlan)},
+
+ {"tx_64_size", VNIC_STAT(tx_grp.s_64)},
+ {"tx_65_127", VNIC_STAT(tx_grp.s_65_127)},
+ {"tx_128_255", VNIC_STAT(tx_grp.s_128_255)},
+ {"tx_256_511", VNIC_STAT(tx_grp.s_256_511)},
+ {"tx_512_1023", VNIC_STAT(tx_grp.s_512_1023)},
+ {"tx_1024_1518", VNIC_STAT(tx_grp.s_1024_1518)},
+ {"tx_1519_max", VNIC_STAT(tx_grp.s_1519_max)},
+
+ {"rx_unicast", VNIC_STAT(rx_grp.unicast)},
+ {"rx_mcastbcast", VNIC_STAT(rx_grp.mcastbcast)},
+ {"rx_untagged", VNIC_STAT(rx_grp.untagged)},
+ {"rx_vlan", VNIC_STAT(rx_grp.vlan)},
+
+ {"rx_64_size", VNIC_STAT(rx_grp.s_64)},
+ {"rx_65_127", VNIC_STAT(rx_grp.s_65_127)},
+ {"rx_128_255", VNIC_STAT(rx_grp.s_128_255)},
+ {"rx_256_511", VNIC_STAT(rx_grp.s_256_511)},
+ {"rx_512_1023", VNIC_STAT(rx_grp.s_512_1023)},
+ {"rx_1024_1518", VNIC_STAT(rx_grp.s_1024_1518)},
+ {"rx_1519_max", VNIC_STAT(rx_grp.s_1519_max)},
+
+ /* ERROR counters */
+ {"rx_fifo_errors", VNIC_NETDEV_STAT(stats.rx_fifo_errors)},
+ {"rx_length_errors", VNIC_NETDEV_STAT(stats.rx_length_errors)},
+
+ {"tx_fifo_errors", VNIC_NETDEV_STAT(stats.tx_fifo_errors)},
+ {"tx_carrier_errors", VNIC_NETDEV_STAT(stats.tx_carrier_errors)},
+
+ {"tx_dlid_zero", VNIC_STAT(tx_dlid_zero)},
+ {"tx_drop_state", VNIC_STAT(tx_drop_state)},
+ {"rx_drop_state", VNIC_STAT(rx_drop_state)},
+ {"rx_oversize", VNIC_STAT(rx_oversize)},
+ {"rx_runt", VNIC_STAT(rx_runt)},
+};
+
+#define VNIC_STATS_LEN ARRAY_SIZE(vnic_gstrings_stats)
+
+/* vnic_get_sset_count - get string set count */
+static int vnic_get_sset_count(struct net_device *netdev, int sset)
+{
+ return (sset == ETH_SS_STATS) ? VNIC_STATS_LEN : -EOPNOTSUPP;
+}
+
+/* vnic_get_ethtool_stats - get statistics */
+static void vnic_get_ethtool_stats(struct net_device *netdev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct hfi_vnic_adapter *adapter = hfi_vnic_priv(netdev);
+ struct hfi_vnic_stats vstats;
+ char *p = NULL;
+ int i;
+
+ memset(&vstats, 0, sizeof(vstats));
+ mutex_lock(&adapter->stats_lock);
+ adapter->rn_ops->ndo_get_stats64(netdev, &vstats.netstats);
+ for (i = 0; i < VNIC_STATS_LEN; i++) {
+ switch (vnic_gstrings_stats[i].type) {
+ case NETDEV_STATS:
+ p = (char *)netdev +
+ vnic_gstrings_stats[i].stat_offset;
+ break;
+ case VNIC_STATS:
+ p = (char *)&vstats +
+ vnic_gstrings_stats[i].stat_offset;
+ break;
+ default:
+ p = NULL;
+ }
+
+ if (p)
+ data[i] = (vnic_gstrings_stats[i].sizeof_stat ==
+ sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
+ }
+ mutex_unlock(&adapter->stats_lock);
+}
+
+/* vnic_get_strings - get strings */
+static void vnic_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
+{
+ int i;
+
+ if (stringset != ETH_SS_STATS)
+ return;
+
+ for (i = 0; i < VNIC_STATS_LEN; i++)
+ memcpy(data + i * ETH_GSTRING_LEN,
+ vnic_gstrings_stats[i].stat_string,
+ ETH_GSTRING_LEN);
+}
+
/* ethtool ops */
static const struct ethtool_ops hfi_vnic_ethtool_ops = {
.get_link = ethtool_op_get_link,
+ .get_strings = vnic_get_strings,
+ .get_sset_count = vnic_get_sset_count,
+ .get_ethtool_stats = vnic_get_ethtool_stats,
};
/* hfi_vnic_set_ethtool_ops - set ethtool ops */
diff --git a/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_internal.h b/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_internal.h
index 5ce925f..d4fcf3b 100644
--- a/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_internal.h
+++ b/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_internal.h
@@ -169,6 +169,7 @@ struct __hfi_veswport_trap {
* @vport_num: vesw port number
* @lock: adapter lock
* @info: virtual ethernet switch port information
+ * @stats_lock: statistics lock
* @flow_tbl: flow to default port redirection table
*/
struct hfi_vnic_adapter {
@@ -184,6 +185,9 @@ struct hfi_vnic_adapter {
struct __hfi_veswport_info info;
+ /* Lock used to protect access to vnic counters */
+ struct mutex stats_lock;
+
u8 flow_tbl[HFI_VNIC_FLOW_TBL_SIZE];
};
diff --git a/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_netdev.c b/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_netdev.c
index f04c8a834..ba045ac 100644
--- a/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_netdev.c
+++ b/drivers/infiniband/ulp/hfi_vnic/hfi_vnic_netdev.c
@@ -59,6 +59,22 @@
#define HFI_VNIC_SKB_HEADROOM \
ALIGN((HFI_VNIC_HDR_LEN + HFI_VNIC_SKB_MDATA_LEN), 8)
+/* This function is overloaded for hfi_vnic specific implementation */
+static struct rtnl_link_stats64 *
+hfi_vnic_get_stats64(struct net_device *netdev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct hfi_vnic_adapter *adapter = hfi_vnic_priv(netdev);
+ struct hfi_vnic_stats vstats;
+
+ memset(&vstats, 0, sizeof(vstats));
+ mutex_lock(&adapter->stats_lock);
+ adapter->rn_ops->ndo_get_stats64(netdev, &vstats.netstats);
+ mutex_unlock(&adapter->stats_lock);
+ memcpy(stats, &vstats.netstats, sizeof(*stats));
+ return stats;
+}
+
/* hfi_netdev_start_xmit - transmit function */
static netdev_tx_t hfi_netdev_start_xmit(struct sk_buff *skb,
struct net_device *netdev)
@@ -150,6 +166,7 @@ static int hfi_netdev_close(struct net_device *netdev)
.ndo_open = hfi_netdev_open,
.ndo_stop = hfi_netdev_close,
.ndo_start_xmit = hfi_netdev_start_xmit,
+ .ndo_get_stats64 = hfi_vnic_get_stats64,
.ndo_select_queue = hfi_vnic_select_queue,
.ndo_set_mac_address = hfi_vnic_set_mac_addr,
};
@@ -188,6 +205,7 @@ struct hfi_vnic_adapter *hfi_vnic_add_netdev(struct ib_device *ibdev,
netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
netdev->hard_header_len += HFI_VNIC_SKB_HEADROOM;
mutex_init(&adapter->lock);
+ mutex_init(&adapter->stats_lock);
SET_NETDEV_DEV(netdev, ibdev->dma_device);
@@ -203,6 +221,7 @@ struct hfi_vnic_adapter *hfi_vnic_add_netdev(struct ib_device *ibdev,
return adapter;
netdev_err:
mutex_destroy(&adapter->lock);
+ mutex_destroy(&adapter->stats_lock);
kfree(adapter);
adapter_err:
ibdev->free_rdma_netdev(netdev);
@@ -219,6 +238,7 @@ void hfi_vnic_rem_netdev(struct hfi_vnic_adapter *adapter)
v_info("removing\n");
unregister_netdev(netdev);
mutex_destroy(&adapter->lock);
+ mutex_destroy(&adapter->stats_lock);
kfree(adapter);
ibdev->free_rdma_netdev(netdev);
}
--
1.8.3.1
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