qlcnic: add eswitch statistics support

Adding eswitch statistics support. User can get
whole eswitch stats or stats of func belong to that eswitch.

Added:
o command to get statistics of eswitch and function.
o sysfs support to export eswitch and func statatistics.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 287 insertions, 1 deletions

diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h
index 970389331bbc..7f4e11bd4cd4 100644
--- a/drivers/net/qlcnic/qlcnic.h
+++ b/drivers/net/qlcnic/qlcnic.h
@@ -555,6 +555,7 @@ struct qlcnic_recv_context {
 #define QLCNIC_CDRP_CMD_GET_ESWITCH_STATUS      0x00000026
 #define QLCNIC_CDRP_CMD_SET_PORTMIRRORING       0x00000027
 #define QLCNIC_CDRP_CMD_CONFIGURE_ESWITCH       0x00000028
+#define QLCNIC_CDRP_CMD_GET_ESWITCH_STATS       0x0000002a
 
 #define QLCNIC_RCODE_SUCCESS            0
 #define QLCNIC_RCODE_TIMEOUT            17
@@ -1126,6 +1127,31 @@ struct qlcnic_esw_func_cfg {
         u8      reserved;
 };
 
+#define QLCNIC_STATS_VERSION            1
+#define QLCNIC_STATS_PORT               1
+#define QLCNIC_STATS_ESWITCH            2
+#define QLCNIC_QUERY_RX_COUNTER         0
+#define QLCNIC_QUERY_TX_COUNTER         1
+struct __qlcnic_esw_statistics {
+        __le16 context_id;
+        __le16 version;
+        __le16 size;
+        __le16 unused;
+        __le64 unicast_frames;
+        __le64 multicast_frames;
+        __le64 broadcast_frames;
+        __le64 dropped_frames;
+        __le64 errors;
+        __le64 local_frames;
+        __le64 numbytes;
+        __le64 rsvd[3];
+};
+
+struct qlcnic_esw_statistics {
+        struct __qlcnic_esw_statistics rx;
+        struct __qlcnic_esw_statistics tx;
+};
+
 int qlcnic_fw_cmd_query_phy(struct qlcnic_adapter *adapter, u32 reg, u32 *val);
 int qlcnic_fw_cmd_set_phy(struct qlcnic_adapter *adapter, u32 reg, u32 val);
 
@@ -1252,6 +1278,11 @@ int qlcnic_toggle_eswitch(struct qlcnic_adapter *, u8, u8);
 int qlcnic_config_switch_port(struct qlcnic_adapter *, u8, int, u8, u8,
                         u8, u8, u16);
 int qlcnic_config_port_mirroring(struct qlcnic_adapter *, u8, u8, u8);
+int qlcnic_get_port_stats(struct qlcnic_adapter *, const u8, const u8,
+                                        struct __qlcnic_esw_statistics *);
+int qlcnic_get_eswitch_stats(struct qlcnic_adapter *, const u8, u8,
+                                        struct __qlcnic_esw_statistics *);
+int qlcnic_clear_esw_stats(struct qlcnic_adapter *adapter, u8, u8, u8);
 extern int qlcnic_config_tso;
 
 /*
diff --git a/drivers/net/qlcnic/qlcnic_ctx.c b/drivers/net/qlcnic/qlcnic_ctx.c
index cc5d861d9a12..57c9b09bd16a 100644
--- a/drivers/net/qlcnic/qlcnic_ctx.c
+++ b/drivers/net/qlcnic/qlcnic_ctx.c
@@ -983,3 +983,128 @@ int qlcnic_config_switch_port(struct qlcnic_adapter *adapter, u8 id,
 
         return err;
 }
+
+int qlcnic_get_port_stats(struct qlcnic_adapter *adapter, const u8 func,
+                const u8 rx_tx, struct __qlcnic_esw_statistics *esw_stats) {
+
+        size_t stats_size = sizeof(struct __qlcnic_esw_statistics);
+        dma_addr_t stats_dma_t;
+        void *stats_addr;
+        u32 arg1;
+        int err;
+
+        if (esw_stats == NULL)
+                return -ENOMEM;
+
+        if (adapter->op_mode != QLCNIC_MGMT_FUNC &&
+            func != adapter->ahw.pci_func) {
+                dev_err(&adapter->pdev->dev,
+                        "Not privilege to query stats for func=%d", func);
+                return -EIO;
+        }
+
+        stats_addr = pci_alloc_consistent(adapter->pdev, stats_size,
+                        &stats_dma_t);
+        if (!stats_addr) {
+                dev_err(&adapter->pdev->dev, "Unable to allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(stats_addr, 0, stats_size);
+
+        arg1 = func | QLCNIC_STATS_VERSION << 8 | QLCNIC_STATS_PORT << 12;
+        arg1 |= rx_tx << 15 | stats_size << 16;
+
+        err = qlcnic_issue_cmd(adapter,
+                        adapter->ahw.pci_func,
+                        adapter->fw_hal_version,
+                        arg1,
+                        MSD(stats_dma_t),
+                        LSD(stats_dma_t),
+                        QLCNIC_CDRP_CMD_GET_ESWITCH_STATS);
+
+        if (!err)
+                memcpy(esw_stats, stats_addr, stats_size);
+
+        pci_free_consistent(adapter->pdev, stats_size, stats_addr,
+                stats_dma_t);
+        return err;
+}
+
+int qlcnic_get_eswitch_stats(struct qlcnic_adapter *adapter, const u8 eswitch,
+                const u8 rx_tx, struct __qlcnic_esw_statistics *esw_stats) {
+
+        struct __qlcnic_esw_statistics port_stats;
+        u8 i;
+        int ret = -EIO;
+
+        if (esw_stats == NULL)
+                return -ENOMEM;
+        if (adapter->op_mode != QLCNIC_MGMT_FUNC)
+                return -EIO;
+        if (adapter->npars == NULL)
+                return -EIO;
+
+        memset(esw_stats, 0, sizeof(struct __qlcnic_esw_statistics));
+        esw_stats->context_id = eswitch;
+
+        for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
+                if (adapter->npars[i].phy_port != eswitch)
+                        continue;
+
+                memset(&port_stats, 0, sizeof(struct __qlcnic_esw_statistics));
+                if (qlcnic_get_port_stats(adapter, i, rx_tx, &port_stats))
+                        continue;
+
+                esw_stats->size = port_stats.size;
+                esw_stats->version = port_stats.version;
+                esw_stats->unicast_frames += port_stats.unicast_frames;
+                esw_stats->multicast_frames += port_stats.multicast_frames;
+                esw_stats->broadcast_frames += port_stats.broadcast_frames;
+                esw_stats->dropped_frames += port_stats.dropped_frames;
+                esw_stats->errors += port_stats.errors;
+                esw_stats->local_frames += port_stats.local_frames;
+                esw_stats->numbytes += port_stats.numbytes;
+
+                ret = 0;
+        }
+        return ret;
+}
+
+int qlcnic_clear_esw_stats(struct qlcnic_adapter *adapter, const u8 func_esw,
+                const u8 port, const u8 rx_tx)
+{
+
+        u32 arg1;
+
+        if (adapter->op_mode != QLCNIC_MGMT_FUNC)
+                return -EIO;
+
+        if (func_esw == QLCNIC_STATS_PORT) {
+                if (port >= QLCNIC_MAX_PCI_FUNC)
+                        goto err_ret;
+        } else if (func_esw == QLCNIC_STATS_ESWITCH) {
+                if (port >= QLCNIC_NIU_MAX_XG_PORTS)
+                        goto err_ret;
+        } else {
+                goto err_ret;
+        }
+
+        if (rx_tx > QLCNIC_QUERY_TX_COUNTER)
+                goto err_ret;
+
+        arg1 = port | QLCNIC_STATS_VERSION << 8 | func_esw << 12;
+        arg1 |= BIT_14 | rx_tx << 15;
+
+        return qlcnic_issue_cmd(adapter,
+                        adapter->ahw.pci_func,
+                        adapter->fw_hal_version,
+                        arg1,
+                        0,
+                        0,
+                        QLCNIC_CDRP_CMD_GET_ESWITCH_STATS);
+
+err_ret:
+        dev_err(&adapter->pdev->dev, "Invalid argument func_esw=%d port=%d"
+                "rx_ctx=%d\n", func_esw, port, rx_tx);
+        return -EIO;
+}
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 06ffd7637f87..a30bde52d40b 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -3378,6 +3378,115 @@ qlcnic_sysfs_read_npar_config(struct file *file, struct kobject *kobj,
 }
 
 static ssize_t
+qlcnic_sysfs_get_port_stats(struct file *file, struct kobject *kobj,
+        struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
+{
+        struct device *dev = container_of(kobj, struct device, kobj);
+        struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+        struct qlcnic_esw_statistics port_stats;
+        int ret;
+
+        if (size != sizeof(struct qlcnic_esw_statistics))
+                return QL_STATUS_INVALID_PARAM;
+
+        if (offset >= QLCNIC_MAX_PCI_FUNC)
+                return QL_STATUS_INVALID_PARAM;
+
+        memset(&port_stats, 0, size);
+        ret = qlcnic_get_port_stats(adapter, offset, QLCNIC_QUERY_RX_COUNTER,
+                                                                &port_stats.rx);
+        if (ret)
+                return ret;
+
+        ret = qlcnic_get_port_stats(adapter, offset, QLCNIC_QUERY_TX_COUNTER,
+                                                                &port_stats.tx);
+        if (ret)
+                return ret;
+
+        memcpy(buf, &port_stats, size);
+        return size;
+}
+
+static ssize_t
+qlcnic_sysfs_get_esw_stats(struct file *file, struct kobject *kobj,
+        struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
+{
+        struct device *dev = container_of(kobj, struct device, kobj);
+        struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+        struct qlcnic_esw_statistics esw_stats;
+        int ret;
+
+        if (size != sizeof(struct qlcnic_esw_statistics))
+                return QL_STATUS_INVALID_PARAM;
+
+        if (offset >= QLCNIC_NIU_MAX_XG_PORTS)
+                return QL_STATUS_INVALID_PARAM;
+
+        memset(&esw_stats, 0, size);
+        ret = qlcnic_get_eswitch_stats(adapter, offset, QLCNIC_QUERY_RX_COUNTER,
+                                                                &esw_stats.rx);
+        if (ret)
+                return ret;
+
+        ret = qlcnic_get_eswitch_stats(adapter, offset, QLCNIC_QUERY_TX_COUNTER,
+                                                                &esw_stats.tx);
+        if (ret)
+                return ret;
+
+        memcpy(buf, &esw_stats, size);
+        return size;
+}
+
+static ssize_t
+qlcnic_sysfs_clear_esw_stats(struct file *file, struct kobject *kobj,
+        struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
+{
+        struct device *dev = container_of(kobj, struct device, kobj);
+        struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+        int ret;
+
+        if (offset >= QLCNIC_NIU_MAX_XG_PORTS)
+                return QL_STATUS_INVALID_PARAM;
+
+        ret = qlcnic_clear_esw_stats(adapter, QLCNIC_STATS_ESWITCH, offset,
+                                                QLCNIC_QUERY_RX_COUNTER);
+        if (ret)
+                return ret;
+
+        ret = qlcnic_clear_esw_stats(adapter, QLCNIC_STATS_ESWITCH, offset,
+                                                QLCNIC_QUERY_TX_COUNTER);
+        if (ret)
+                return ret;
+
+        return size;
+}
+
+static ssize_t
+qlcnic_sysfs_clear_port_stats(struct file *file, struct kobject *kobj,
+        struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
+{
+
+        struct device *dev = container_of(kobj, struct device, kobj);
+        struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
+        int ret;
+
+        if (offset >= QLCNIC_MAX_PCI_FUNC)
+                return QL_STATUS_INVALID_PARAM;
+
+        ret = qlcnic_clear_esw_stats(adapter, QLCNIC_STATS_PORT, offset,
+                                                QLCNIC_QUERY_RX_COUNTER);
+        if (ret)
+                return ret;
+
+        ret = qlcnic_clear_esw_stats(adapter, QLCNIC_STATS_PORT, offset,
+                                                QLCNIC_QUERY_TX_COUNTER);
+        if (ret)
+                return ret;
+
+        return size;
+}
+
+static ssize_t
 qlcnic_sysfs_read_pci_config(struct file *file, struct kobject *kobj,
         struct bin_attribute *attr, char *buf, loff_t offset, size_t size)
 {
@@ -3426,6 +3535,20 @@ static struct bin_attribute bin_attr_pci_config = {
         .write = NULL,
 };
 
+static struct bin_attribute bin_attr_port_stats = {
+        .attr = {.name = "port_stats", .mode = (S_IRUGO | S_IWUSR)},
+        .size = 0,
+        .read = qlcnic_sysfs_get_port_stats,
+        .write = qlcnic_sysfs_clear_port_stats,
+};
+
+static struct bin_attribute bin_attr_esw_stats = {
+        .attr = {.name = "esw_stats", .mode = (S_IRUGO | S_IWUSR)},
+        .size = 0,
+        .read = qlcnic_sysfs_get_esw_stats,
+        .write = qlcnic_sysfs_clear_esw_stats,
+};
+
 static struct bin_attribute bin_attr_esw_config = {
         .attr = {.name = "esw_config", .mode = (S_IRUGO | S_IWUSR)},
         .size = 0,
@@ -3465,6 +3588,9 @@ qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
 {
         struct device *dev = &adapter->pdev->dev;
 
+        if (device_create_bin_file(dev, &bin_attr_port_stats))
+                dev_info(dev, "failed to create port stats sysfs entry");
+
         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC)
                 return;
         if (device_create_file(dev, &dev_attr_diag_mode))
@@ -3484,7 +3610,8 @@ qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
                 dev_info(dev, "failed to create esw config sysfs entry");
         if (device_create_bin_file(dev, &bin_attr_pm_config))
                 dev_info(dev, "failed to create pm config sysfs entry");
-
+        if (device_create_bin_file(dev, &bin_attr_esw_stats))
+                dev_info(dev, "failed to create eswitch stats sysfs entry");
 }
 
 static void
@@ -3492,6 +3619,8 @@ qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
 {
         struct device *dev = &adapter->pdev->dev;
 
+        device_remove_bin_file(dev, &bin_attr_port_stats);
+
         if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC)
                 return;
         device_remove_file(dev, &dev_attr_diag_mode);
@@ -3504,6 +3633,7 @@ qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
         device_remove_bin_file(dev, &bin_attr_npar_config);
         device_remove_bin_file(dev, &bin_attr_esw_config);
         device_remove_bin_file(dev, &bin_attr_pm_config);
+        device_remove_bin_file(dev, &bin_attr_esw_stats);
 }
 
 #ifdef CONFIG_INET