diff mbox series

[v6,05/11] {hmp, hw/pvrdma}: Expose device internals via monitor interface

Message ID 1552300155-25216-6-git-send-email-yuval.shaia@oracle.com (mailing list archive)
State New, archived
Headers show
Series Misc fixes to pvrdma device | expand

Commit Message

Yuval Shaia March 11, 2019, 10:29 a.m. UTC
Allow interrogating device internals through HMP interface.
The exposed indicators can be used for troubleshooting by developers or
sysadmin.
There is no need to expose these attributes to a management system (e.x.
libvirt) because (1) most of them are not "device-management' related
info and (2) there is no guarantee the interface is stable.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
---
 hmp-commands-info.hx      | 14 +++++++++++++
 hmp.c                     | 27 ++++++++++++++++++++++++
 hmp.h                     |  1 +
 hw/rdma/Makefile.objs     |  2 +-
 hw/rdma/rdma.c            | 30 +++++++++++++++++++++++++++
 hw/rdma/rdma_rm.c         | 53 +++++++++++++++++++++++++++++++++++++++++++++++
 hw/rdma/rdma_rm.h         |  1 +
 hw/rdma/vmw/pvrdma_main.c | 26 +++++++++++++++++++++++
 include/hw/rdma/rdma.h    | 40 +++++++++++++++++++++++++++++++++++
 9 files changed, 193 insertions(+), 1 deletion(-)
 create mode 100644 hw/rdma/rdma.c
 create mode 100644 include/hw/rdma/rdma.h

Comments

Marcel Apfelbaum March 14, 2019, 9:23 a.m. UTC | #1
On 3/11/19 12:29 PM, Yuval Shaia wrote:
> Allow interrogating device internals through HMP interface.
> The exposed indicators can be used for troubleshooting by developers or
> sysadmin.
> There is no need to expose these attributes to a management system (e.x.
> libvirt) because (1) most of them are not "device-management' related
> info and (2) there is no guarantee the interface is stable.
>
> Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> Acked-by: Markus Armbruster <armbru@redhat.com>
> ---
>   hmp-commands-info.hx      | 14 +++++++++++++
>   hmp.c                     | 27 ++++++++++++++++++++++++
>   hmp.h                     |  1 +
>   hw/rdma/Makefile.objs     |  2 +-
>   hw/rdma/rdma.c            | 30 +++++++++++++++++++++++++++
>   hw/rdma/rdma_rm.c         | 53 +++++++++++++++++++++++++++++++++++++++++++++++
>   hw/rdma/rdma_rm.h         |  1 +
>   hw/rdma/vmw/pvrdma_main.c | 26 +++++++++++++++++++++++
>   include/hw/rdma/rdma.h    | 40 +++++++++++++++++++++++++++++++++++
>   9 files changed, 193 insertions(+), 1 deletion(-)
>   create mode 100644 hw/rdma/rdma.c
>   create mode 100644 include/hw/rdma/rdma.h
>
> diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
> index cbee8b9..c59444c 100644
> --- a/hmp-commands-info.hx
> +++ b/hmp-commands-info.hx
> @@ -205,6 +205,20 @@ Show PIC state.
>   ETEXI
>   
>       {
> +        .name       = "rdma",
> +        .args_type  = "",
> +        .params     = "",
> +        .help       = "show RDMA state",
> +        .cmd        = hmp_info_rdma,
> +    },
> +
> +STEXI
> +@item info rdma
> +@findex info rdma
> +Show RDMA state.
> +ETEXI
> +
> +    {
>           .name       = "pci",
>           .args_type  = "",
>           .params     = "",
> diff --git a/hmp.c b/hmp.c
> index 4a702d5..fa1e59a 100644
> --- a/hmp.c
> +++ b/hmp.c
> @@ -51,6 +51,7 @@
>   #include "qemu/error-report.h"
>   #include "exec/ramlist.h"
>   #include "hw/intc/intc.h"
> +#include "hw/rdma/rdma.h"
>   #include "migration/snapshot.h"
>   #include "migration/misc.h"
>   
> @@ -1013,6 +1014,32 @@ void hmp_info_pic(Monitor *mon, const QDict *qdict)
>                                      hmp_info_pic_foreach, mon);
>   }
>   
> +static int hmp_info_rdma_foreach(Object *obj, void *opaque)
> +{
> +    RdmaProvider *rdma;
> +    RdmaProviderClass *k;
> +    Monitor *mon = opaque;
> +
> +    if (object_dynamic_cast(obj, INTERFACE_RDMA_PROVIDER)) {
> +        rdma = RDMA_PROVIDER(obj);
> +        k = RDMA_PROVIDER_GET_CLASS(obj);
> +        if (k->print_statistics) {
> +            k->print_statistics(mon, rdma);
> +        } else {
> +            monitor_printf(mon, "RDMA statistics not available for %s.\n",
> +                           object_get_typename(obj));
> +        }
> +    }
> +
> +    return 0;
> +}
> +
> +void hmp_info_rdma(Monitor *mon, const QDict *qdict)
> +{
> +    object_child_foreach_recursive(object_get_root(),
> +                                   hmp_info_rdma_foreach, mon);
> +}
> +
>   void hmp_info_pci(Monitor *mon, const QDict *qdict)
>   {
>       PciInfoList *info_list, *info;
> diff --git a/hmp.h b/hmp.h
> index e0f32f0..43617f2 100644
> --- a/hmp.h
> +++ b/hmp.h
> @@ -36,6 +36,7 @@ void hmp_info_spice(Monitor *mon, const QDict *qdict);
>   void hmp_info_balloon(Monitor *mon, const QDict *qdict);
>   void hmp_info_irq(Monitor *mon, const QDict *qdict);
>   void hmp_info_pic(Monitor *mon, const QDict *qdict);
> +void hmp_info_rdma(Monitor *mon, const QDict *qdict);
>   void hmp_info_pci(Monitor *mon, const QDict *qdict);
>   void hmp_info_block_jobs(Monitor *mon, const QDict *qdict);
>   void hmp_info_tpm(Monitor *mon, const QDict *qdict);
> diff --git a/hw/rdma/Makefile.objs b/hw/rdma/Makefile.objs
> index bd36cbf..c354e60 100644
> --- a/hw/rdma/Makefile.objs
> +++ b/hw/rdma/Makefile.objs
> @@ -1,5 +1,5 @@
>   ifeq ($(CONFIG_PVRDMA),y)
> -obj-$(CONFIG_PCI) += rdma_utils.o rdma_backend.o rdma_rm.o
> +obj-$(CONFIG_PCI) += rdma_utils.o rdma_backend.o rdma_rm.o rdma.o
>   obj-$(CONFIG_PCI) += vmw/pvrdma_dev_ring.o vmw/pvrdma_cmd.o \
>                        vmw/pvrdma_qp_ops.o vmw/pvrdma_main.o
>   endif
> diff --git a/hw/rdma/rdma.c b/hw/rdma/rdma.c
> new file mode 100644
> index 0000000..7bec0d0
> --- /dev/null
> +++ b/hw/rdma/rdma.c
> @@ -0,0 +1,30 @@
> +/*
> + * RDMA device interface
> + *
> + * Copyright (C) 2018 Oracle
> + * Copyright (C) 2018 Red Hat Inc
> + *
> + * Authors:
> + *     Yuval Shaia <yuval.shaia@oracle.com>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or later.
> + * See the COPYING file in the top-level directory.
> + *
> + */
> +
> +#include "qemu/osdep.h"
> +#include "hw/rdma/rdma.h"
> +#include "qemu/module.h"
> +
> +static const TypeInfo rdma_hmp_info = {
> +    .name = INTERFACE_RDMA_PROVIDER,
> +    .parent = TYPE_INTERFACE,
> +    .class_size = sizeof(RdmaProviderClass),
> +};
> +
> +static void rdma_register_types(void)
> +{
> +    type_register_static(&rdma_hmp_info);
> +}
> +
> +type_init(rdma_register_types)
> diff --git a/hw/rdma/rdma_rm.c b/hw/rdma/rdma_rm.c
> index 35fa1ab..b50e192 100644
> --- a/hw/rdma/rdma_rm.c
> +++ b/hw/rdma/rdma_rm.c
> @@ -16,6 +16,7 @@
>   #include "qemu/osdep.h"
>   #include "qapi/error.h"
>   #include "cpu.h"
> +#include "monitor/monitor.h"
>   
>   #include "trace.h"
>   #include "rdma_utils.h"
> @@ -26,6 +27,58 @@
>   #define PG_DIR_SZ { TARGET_PAGE_SIZE / sizeof(__u64) }
>   #define PG_TBL_SZ { TARGET_PAGE_SIZE / sizeof(__u64) }
>   
> +void rdma_dump_device_counters(Monitor *mon, RdmaDeviceResources *dev_res)
> +{
> +    monitor_printf(mon, "\ttx               : %" PRId64 "\n",
> +                   dev_res->stats.tx);
> +    monitor_printf(mon, "\ttx_len           : %" PRId64 "\n",
> +                   dev_res->stats.tx_len);
> +    monitor_printf(mon, "\ttx_err           : %" PRId64 "\n",
> +                   dev_res->stats.tx_err);
> +    monitor_printf(mon, "\trx_bufs          : %" PRId64 "\n",
> +                   dev_res->stats.rx_bufs);
> +    monitor_printf(mon, "\trx_bufs_len      : %" PRId64 "\n",
> +                   dev_res->stats.rx_bufs_len);
> +    monitor_printf(mon, "\trx_bufs_err      : %" PRId64 "\n",
> +                   dev_res->stats.rx_bufs_err);
> +    monitor_printf(mon, "\tcomps            : %" PRId64 "\n",
> +                   dev_res->stats.completions);
> +    monitor_printf(mon, "\tmissing_comps    : %" PRId32 "\n",
> +                   dev_res->stats.missing_cqe);
> +    monitor_printf(mon, "\tpoll_cq (bk)     : %" PRId64 "\n",
> +                   dev_res->stats.poll_cq_from_bk);
> +    monitor_printf(mon, "\tpoll_cq_ppoll_to : %" PRId64 "\n",
> +                   dev_res->stats.poll_cq_ppoll_to);
> +    monitor_printf(mon, "\tpoll_cq (fe)     : %" PRId64 "\n",
> +                   dev_res->stats.poll_cq_from_guest);
> +    monitor_printf(mon, "\tpoll_cq_empty    : %" PRId64 "\n",
> +                   dev_res->stats.poll_cq_from_guest_empty);
> +    monitor_printf(mon, "\tmad_tx           : %" PRId64 "\n",
> +                   dev_res->stats.mad_tx);
> +    monitor_printf(mon, "\tmad_tx_err       : %" PRId64 "\n",
> +                   dev_res->stats.mad_tx_err);
> +    monitor_printf(mon, "\tmad_rx           : %" PRId64 "\n",
> +                   dev_res->stats.mad_rx);
> +    monitor_printf(mon, "\tmad_rx_err       : %" PRId64 "\n",
> +                   dev_res->stats.mad_rx_err);
> +    monitor_printf(mon, "\tmad_rx_bufs      : %" PRId64 "\n",
> +                   dev_res->stats.mad_rx_bufs);
> +    monitor_printf(mon, "\tmad_rx_bufs_err  : %" PRId64 "\n",
> +                   dev_res->stats.mad_rx_bufs_err);
> +    monitor_printf(mon, "\tPDs              : %" PRId32 "\n",
> +                   dev_res->pd_tbl.used);
> +    monitor_printf(mon, "\tMRs              : %" PRId32 "\n",
> +                   dev_res->mr_tbl.used);
> +    monitor_printf(mon, "\tUCs              : %" PRId32 "\n",
> +                   dev_res->uc_tbl.used);
> +    monitor_printf(mon, "\tQPs              : %" PRId32 "\n",
> +                   dev_res->qp_tbl.used);
> +    monitor_printf(mon, "\tCQs              : %" PRId32 "\n",
> +                   dev_res->cq_tbl.used);
> +    monitor_printf(mon, "\tCEQ_CTXs         : %" PRId32 "\n",
> +                   dev_res->cqe_ctx_tbl.used);
> +}
> +
>   static inline void res_tbl_init(const char *name, RdmaRmResTbl *tbl,
>                                   uint32_t tbl_sz, uint32_t res_sz)
>   {
> diff --git a/hw/rdma/rdma_rm.h b/hw/rdma/rdma_rm.h
> index f9b2ec5..4f03f9b 100644
> --- a/hw/rdma/rdma_rm.h
> +++ b/hw/rdma/rdma_rm.h
> @@ -81,5 +81,6 @@ static inline union ibv_gid *rdma_rm_get_gid(RdmaDeviceResources *dev_res,
>   {
>       return &dev_res->port.gid_tbl[sgid_idx].gid;
>   }
> +void rdma_dump_device_counters(Monitor *mon, RdmaDeviceResources *dev_res);
>   
>   #endif
> diff --git a/hw/rdma/vmw/pvrdma_main.c b/hw/rdma/vmw/pvrdma_main.c
> index dd35646..729a2df 100644
> --- a/hw/rdma/vmw/pvrdma_main.c
> +++ b/hw/rdma/vmw/pvrdma_main.c
> @@ -25,6 +25,8 @@
>   #include "cpu.h"
>   #include "trace.h"
>   #include "sysemu/sysemu.h"
> +#include "monitor/monitor.h"
> +#include "hw/rdma/rdma.h"
>   
>   #include "../rdma_rm.h"
>   #include "../rdma_backend.h"
> @@ -55,6 +57,26 @@ static Property pvrdma_dev_properties[] = {
>       DEFINE_PROP_END_OF_LIST(),
>   };
>   
> +static void pvrdma_print_statistics(Monitor *mon, RdmaProvider *obj)
> +{
> +    PVRDMADev *dev = PVRDMA_DEV(obj);
> +    PCIDevice *pdev = PCI_DEVICE(dev);
> +
> +    monitor_printf(mon, "%s, %x.%x\n", pdev->name, PCI_SLOT(pdev->devfn),
> +                   PCI_FUNC(pdev->devfn));
> +    monitor_printf(mon, "\tcommands         : %" PRId64 "\n",
> +                   dev->stats.commands);
> +    monitor_printf(mon, "\tregs_reads       : %" PRId64 "\n",
> +                   dev->stats.regs_reads);
> +    monitor_printf(mon, "\tregs_writes      : %" PRId64 "\n",
> +                   dev->stats.regs_writes);
> +    monitor_printf(mon, "\tuar_writes       : %" PRId64 "\n",
> +                   dev->stats.uar_writes);
> +    monitor_printf(mon, "\tinterrupts       : %" PRId64 "\n",
> +                   dev->stats.interrupts);
> +    rdma_dump_device_counters(mon, &dev->rdma_dev_res);
> +}
> +
>   static void free_dev_ring(PCIDevice *pci_dev, PvrdmaRing *ring,
>                             void *ring_state)
>   {
> @@ -639,6 +661,7 @@ static void pvrdma_class_init(ObjectClass *klass, void *data)
>   {
>       DeviceClass *dc = DEVICE_CLASS(klass);
>       PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
> +    RdmaProviderClass *ir = INTERFACE_RDMA_PROVIDER_CLASS(klass);
>   
>       k->realize = pvrdma_realize;
>       k->exit = pvrdma_exit;
> @@ -650,6 +673,8 @@ static void pvrdma_class_init(ObjectClass *klass, void *data)
>       dc->desc = "RDMA Device";
>       dc->props = pvrdma_dev_properties;
>       set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
> +
> +    ir->print_statistics = pvrdma_print_statistics;
>   }
>   
>   static const TypeInfo pvrdma_info = {
> @@ -659,6 +684,7 @@ static const TypeInfo pvrdma_info = {
>       .class_init = pvrdma_class_init,
>       .interfaces = (InterfaceInfo[]) {
>           { INTERFACE_CONVENTIONAL_PCI_DEVICE },
> +        { INTERFACE_RDMA_PROVIDER },
>           { }
>       }
>   };
> diff --git a/include/hw/rdma/rdma.h b/include/hw/rdma/rdma.h
> new file mode 100644
> index 0000000..68290fb
> --- /dev/null
> +++ b/include/hw/rdma/rdma.h
> @@ -0,0 +1,40 @@
> +/*
> + * RDMA device interface
> + *
> + * Copyright (C) 2019 Oracle
> + * Copyright (C) 2019 Red Hat Inc
> + *
> + * Authors:
> + *     Yuval Shaia <yuval.shaia@oracle.com>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or later.
> + * See the COPYING file in the top-level directory.
> + *
> + */
> +
> +#ifndef RDMA_H
> +#define RDMA_H
> +
> +#include "qom/object.h"
> +
> +#define INTERFACE_RDMA_PROVIDER "rdma"
> +
> +#define INTERFACE_RDMA_PROVIDER_CLASS(klass) \
> +    OBJECT_CLASS_CHECK(RdmaProviderClass, (klass), \
> +                       INTERFACE_RDMA_PROVIDER)
> +#define RDMA_PROVIDER_GET_CLASS(obj) \
> +    OBJECT_GET_CLASS(RdmaProviderClass, (obj), \
> +                     INTERFACE_RDMA_PROVIDER)
> +#define RDMA_PROVIDER(obj) \
> +    INTERFACE_CHECK(RdmaProvider, (obj), \
> +                    INTERFACE_RDMA_PROVIDER)
> +
> +typedef struct RdmaProvider RdmaProvider;
> +
> +typedef struct RdmaProviderClass {
> +    InterfaceClass parent;
> +
> +    void (*print_statistics)(Monitor *mon, RdmaProvider *obj);
> +} RdmaProviderClass;
> +
> +#endif


Reviewed-by: Marcel Apfelbaum<marcel.apfelbaum@gmail.com>

Thanks,
Marcel
diff mbox series

Patch

diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index cbee8b9..c59444c 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -205,6 +205,20 @@  Show PIC state.
 ETEXI
 
     {
+        .name       = "rdma",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show RDMA state",
+        .cmd        = hmp_info_rdma,
+    },
+
+STEXI
+@item info rdma
+@findex info rdma
+Show RDMA state.
+ETEXI
+
+    {
         .name       = "pci",
         .args_type  = "",
         .params     = "",
diff --git a/hmp.c b/hmp.c
index 4a702d5..fa1e59a 100644
--- a/hmp.c
+++ b/hmp.c
@@ -51,6 +51,7 @@ 
 #include "qemu/error-report.h"
 #include "exec/ramlist.h"
 #include "hw/intc/intc.h"
+#include "hw/rdma/rdma.h"
 #include "migration/snapshot.h"
 #include "migration/misc.h"
 
@@ -1013,6 +1014,32 @@  void hmp_info_pic(Monitor *mon, const QDict *qdict)
                                    hmp_info_pic_foreach, mon);
 }
 
+static int hmp_info_rdma_foreach(Object *obj, void *opaque)
+{
+    RdmaProvider *rdma;
+    RdmaProviderClass *k;
+    Monitor *mon = opaque;
+
+    if (object_dynamic_cast(obj, INTERFACE_RDMA_PROVIDER)) {
+        rdma = RDMA_PROVIDER(obj);
+        k = RDMA_PROVIDER_GET_CLASS(obj);
+        if (k->print_statistics) {
+            k->print_statistics(mon, rdma);
+        } else {
+            monitor_printf(mon, "RDMA statistics not available for %s.\n",
+                           object_get_typename(obj));
+        }
+    }
+
+    return 0;
+}
+
+void hmp_info_rdma(Monitor *mon, const QDict *qdict)
+{
+    object_child_foreach_recursive(object_get_root(),
+                                   hmp_info_rdma_foreach, mon);
+}
+
 void hmp_info_pci(Monitor *mon, const QDict *qdict)
 {
     PciInfoList *info_list, *info;
diff --git a/hmp.h b/hmp.h
index e0f32f0..43617f2 100644
--- a/hmp.h
+++ b/hmp.h
@@ -36,6 +36,7 @@  void hmp_info_spice(Monitor *mon, const QDict *qdict);
 void hmp_info_balloon(Monitor *mon, const QDict *qdict);
 void hmp_info_irq(Monitor *mon, const QDict *qdict);
 void hmp_info_pic(Monitor *mon, const QDict *qdict);
+void hmp_info_rdma(Monitor *mon, const QDict *qdict);
 void hmp_info_pci(Monitor *mon, const QDict *qdict);
 void hmp_info_block_jobs(Monitor *mon, const QDict *qdict);
 void hmp_info_tpm(Monitor *mon, const QDict *qdict);
diff --git a/hw/rdma/Makefile.objs b/hw/rdma/Makefile.objs
index bd36cbf..c354e60 100644
--- a/hw/rdma/Makefile.objs
+++ b/hw/rdma/Makefile.objs
@@ -1,5 +1,5 @@ 
 ifeq ($(CONFIG_PVRDMA),y)
-obj-$(CONFIG_PCI) += rdma_utils.o rdma_backend.o rdma_rm.o
+obj-$(CONFIG_PCI) += rdma_utils.o rdma_backend.o rdma_rm.o rdma.o
 obj-$(CONFIG_PCI) += vmw/pvrdma_dev_ring.o vmw/pvrdma_cmd.o \
                      vmw/pvrdma_qp_ops.o vmw/pvrdma_main.o
 endif
diff --git a/hw/rdma/rdma.c b/hw/rdma/rdma.c
new file mode 100644
index 0000000..7bec0d0
--- /dev/null
+++ b/hw/rdma/rdma.c
@@ -0,0 +1,30 @@ 
+/*
+ * RDMA device interface
+ *
+ * Copyright (C) 2018 Oracle
+ * Copyright (C) 2018 Red Hat Inc
+ *
+ * Authors:
+ *     Yuval Shaia <yuval.shaia@oracle.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "hw/rdma/rdma.h"
+#include "qemu/module.h"
+
+static const TypeInfo rdma_hmp_info = {
+    .name = INTERFACE_RDMA_PROVIDER,
+    .parent = TYPE_INTERFACE,
+    .class_size = sizeof(RdmaProviderClass),
+};
+
+static void rdma_register_types(void)
+{
+    type_register_static(&rdma_hmp_info);
+}
+
+type_init(rdma_register_types)
diff --git a/hw/rdma/rdma_rm.c b/hw/rdma/rdma_rm.c
index 35fa1ab..b50e192 100644
--- a/hw/rdma/rdma_rm.c
+++ b/hw/rdma/rdma_rm.c
@@ -16,6 +16,7 @@ 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "cpu.h"
+#include "monitor/monitor.h"
 
 #include "trace.h"
 #include "rdma_utils.h"
@@ -26,6 +27,58 @@ 
 #define PG_DIR_SZ { TARGET_PAGE_SIZE / sizeof(__u64) }
 #define PG_TBL_SZ { TARGET_PAGE_SIZE / sizeof(__u64) }
 
+void rdma_dump_device_counters(Monitor *mon, RdmaDeviceResources *dev_res)
+{
+    monitor_printf(mon, "\ttx               : %" PRId64 "\n",
+                   dev_res->stats.tx);
+    monitor_printf(mon, "\ttx_len           : %" PRId64 "\n",
+                   dev_res->stats.tx_len);
+    monitor_printf(mon, "\ttx_err           : %" PRId64 "\n",
+                   dev_res->stats.tx_err);
+    monitor_printf(mon, "\trx_bufs          : %" PRId64 "\n",
+                   dev_res->stats.rx_bufs);
+    monitor_printf(mon, "\trx_bufs_len      : %" PRId64 "\n",
+                   dev_res->stats.rx_bufs_len);
+    monitor_printf(mon, "\trx_bufs_err      : %" PRId64 "\n",
+                   dev_res->stats.rx_bufs_err);
+    monitor_printf(mon, "\tcomps            : %" PRId64 "\n",
+                   dev_res->stats.completions);
+    monitor_printf(mon, "\tmissing_comps    : %" PRId32 "\n",
+                   dev_res->stats.missing_cqe);
+    monitor_printf(mon, "\tpoll_cq (bk)     : %" PRId64 "\n",
+                   dev_res->stats.poll_cq_from_bk);
+    monitor_printf(mon, "\tpoll_cq_ppoll_to : %" PRId64 "\n",
+                   dev_res->stats.poll_cq_ppoll_to);
+    monitor_printf(mon, "\tpoll_cq (fe)     : %" PRId64 "\n",
+                   dev_res->stats.poll_cq_from_guest);
+    monitor_printf(mon, "\tpoll_cq_empty    : %" PRId64 "\n",
+                   dev_res->stats.poll_cq_from_guest_empty);
+    monitor_printf(mon, "\tmad_tx           : %" PRId64 "\n",
+                   dev_res->stats.mad_tx);
+    monitor_printf(mon, "\tmad_tx_err       : %" PRId64 "\n",
+                   dev_res->stats.mad_tx_err);
+    monitor_printf(mon, "\tmad_rx           : %" PRId64 "\n",
+                   dev_res->stats.mad_rx);
+    monitor_printf(mon, "\tmad_rx_err       : %" PRId64 "\n",
+                   dev_res->stats.mad_rx_err);
+    monitor_printf(mon, "\tmad_rx_bufs      : %" PRId64 "\n",
+                   dev_res->stats.mad_rx_bufs);
+    monitor_printf(mon, "\tmad_rx_bufs_err  : %" PRId64 "\n",
+                   dev_res->stats.mad_rx_bufs_err);
+    monitor_printf(mon, "\tPDs              : %" PRId32 "\n",
+                   dev_res->pd_tbl.used);
+    monitor_printf(mon, "\tMRs              : %" PRId32 "\n",
+                   dev_res->mr_tbl.used);
+    monitor_printf(mon, "\tUCs              : %" PRId32 "\n",
+                   dev_res->uc_tbl.used);
+    monitor_printf(mon, "\tQPs              : %" PRId32 "\n",
+                   dev_res->qp_tbl.used);
+    monitor_printf(mon, "\tCQs              : %" PRId32 "\n",
+                   dev_res->cq_tbl.used);
+    monitor_printf(mon, "\tCEQ_CTXs         : %" PRId32 "\n",
+                   dev_res->cqe_ctx_tbl.used);
+}
+
 static inline void res_tbl_init(const char *name, RdmaRmResTbl *tbl,
                                 uint32_t tbl_sz, uint32_t res_sz)
 {
diff --git a/hw/rdma/rdma_rm.h b/hw/rdma/rdma_rm.h
index f9b2ec5..4f03f9b 100644
--- a/hw/rdma/rdma_rm.h
+++ b/hw/rdma/rdma_rm.h
@@ -81,5 +81,6 @@  static inline union ibv_gid *rdma_rm_get_gid(RdmaDeviceResources *dev_res,
 {
     return &dev_res->port.gid_tbl[sgid_idx].gid;
 }
+void rdma_dump_device_counters(Monitor *mon, RdmaDeviceResources *dev_res);
 
 #endif
diff --git a/hw/rdma/vmw/pvrdma_main.c b/hw/rdma/vmw/pvrdma_main.c
index dd35646..729a2df 100644
--- a/hw/rdma/vmw/pvrdma_main.c
+++ b/hw/rdma/vmw/pvrdma_main.c
@@ -25,6 +25,8 @@ 
 #include "cpu.h"
 #include "trace.h"
 #include "sysemu/sysemu.h"
+#include "monitor/monitor.h"
+#include "hw/rdma/rdma.h"
 
 #include "../rdma_rm.h"
 #include "../rdma_backend.h"
@@ -55,6 +57,26 @@  static Property pvrdma_dev_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
+static void pvrdma_print_statistics(Monitor *mon, RdmaProvider *obj)
+{
+    PVRDMADev *dev = PVRDMA_DEV(obj);
+    PCIDevice *pdev = PCI_DEVICE(dev);
+
+    monitor_printf(mon, "%s, %x.%x\n", pdev->name, PCI_SLOT(pdev->devfn),
+                   PCI_FUNC(pdev->devfn));
+    monitor_printf(mon, "\tcommands         : %" PRId64 "\n",
+                   dev->stats.commands);
+    monitor_printf(mon, "\tregs_reads       : %" PRId64 "\n",
+                   dev->stats.regs_reads);
+    monitor_printf(mon, "\tregs_writes      : %" PRId64 "\n",
+                   dev->stats.regs_writes);
+    monitor_printf(mon, "\tuar_writes       : %" PRId64 "\n",
+                   dev->stats.uar_writes);
+    monitor_printf(mon, "\tinterrupts       : %" PRId64 "\n",
+                   dev->stats.interrupts);
+    rdma_dump_device_counters(mon, &dev->rdma_dev_res);
+}
+
 static void free_dev_ring(PCIDevice *pci_dev, PvrdmaRing *ring,
                           void *ring_state)
 {
@@ -639,6 +661,7 @@  static void pvrdma_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+    RdmaProviderClass *ir = INTERFACE_RDMA_PROVIDER_CLASS(klass);
 
     k->realize = pvrdma_realize;
     k->exit = pvrdma_exit;
@@ -650,6 +673,8 @@  static void pvrdma_class_init(ObjectClass *klass, void *data)
     dc->desc = "RDMA Device";
     dc->props = pvrdma_dev_properties;
     set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
+
+    ir->print_statistics = pvrdma_print_statistics;
 }
 
 static const TypeInfo pvrdma_info = {
@@ -659,6 +684,7 @@  static const TypeInfo pvrdma_info = {
     .class_init = pvrdma_class_init,
     .interfaces = (InterfaceInfo[]) {
         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+        { INTERFACE_RDMA_PROVIDER },
         { }
     }
 };
diff --git a/include/hw/rdma/rdma.h b/include/hw/rdma/rdma.h
new file mode 100644
index 0000000..68290fb
--- /dev/null
+++ b/include/hw/rdma/rdma.h
@@ -0,0 +1,40 @@ 
+/*
+ * RDMA device interface
+ *
+ * Copyright (C) 2019 Oracle
+ * Copyright (C) 2019 Red Hat Inc
+ *
+ * Authors:
+ *     Yuval Shaia <yuval.shaia@oracle.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef RDMA_H
+#define RDMA_H
+
+#include "qom/object.h"
+
+#define INTERFACE_RDMA_PROVIDER "rdma"
+
+#define INTERFACE_RDMA_PROVIDER_CLASS(klass) \
+    OBJECT_CLASS_CHECK(RdmaProviderClass, (klass), \
+                       INTERFACE_RDMA_PROVIDER)
+#define RDMA_PROVIDER_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(RdmaProviderClass, (obj), \
+                     INTERFACE_RDMA_PROVIDER)
+#define RDMA_PROVIDER(obj) \
+    INTERFACE_CHECK(RdmaProvider, (obj), \
+                    INTERFACE_RDMA_PROVIDER)
+
+typedef struct RdmaProvider RdmaProvider;
+
+typedef struct RdmaProviderClass {
+    InterfaceClass parent;
+
+    void (*print_statistics)(Monitor *mon, RdmaProvider *obj);
+} RdmaProviderClass;
+
+#endif