Add xstats() functions and statistic strings to virtio PMD.
Signed-off-by: Harry van Haaren <harry.van.haaren at intel.com>
---
drivers/net/virtio/virtio_ethdev.c | 82 +++++++++++++++++++++++++++++++++++++-
1 file changed, 80 insertions(+), 2 deletions(-)
diff --git a/drivers/net/virtio/virtio_ethdev.c
b/drivers/net/virtio/virtio_ethdev.c
index 465d3cd..c897d1b 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -80,7 +80,10 @@ static int virtio_dev_link_update(struct rte_eth_dev *dev,
static void virtio_set_hwaddr(struct virtio_hw *hw);
static void virtio_get_hwaddr(struct virtio_hw *hw);
-static void virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats
*stats);
+static void virtio_dev_stats_get(struct rte_eth_dev *dev,
+ struct rte_eth_stats *stats);
+static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
+ struct rte_eth_xstats *xstats, unsigned n);
static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
@@ -109,6 +112,21 @@ static const struct rte_pci_id pci_id_virtio_map[] = {
{ .vendor_id = 0, /* sentinel */ },
};
+struct rte_virtio_xstats_name_off {
+ char name[RTE_ETH_XSTATS_NAME_SIZE];
+ unsigned offset;
+};
+
+/* [rt]x_qX_ is prepended to the name string here */
+static const struct rte_virtio_xstats_name_off rte_virtio_q_stat_strings[] = {
+ {"packets", offsetof(struct virtqueue, packets)},
+ {"bytes", offsetof(struct virtqueue, bytes)},
+ {"errors", offsetof(struct virtqueue, errors)},
+};
+
+#define VIRTIO_NB_Q_XSTATS (sizeof(rte_virtio_q_stat_strings) / \
+ sizeof(rte_virtio_q_stat_strings[0]))
+
static int
virtio_send_command(struct virtqueue *vq, struct virtio_pmd_ctrl *ctrl,
int *dlen, int pkt_num)
@@ -568,7 +586,9 @@ static const struct eth_dev_ops virtio_eth_dev_ops = {
.dev_infos_get = virtio_dev_info_get,
.stats_get = virtio_dev_stats_get,
+ .xstats_get = virtio_dev_xstats_get,
.stats_reset = virtio_dev_stats_reset,
+ .xstats_reset = virtio_dev_stats_reset,
.link_update = virtio_dev_link_update,
.rx_queue_setup = virtio_dev_rx_queue_setup,
.rx_queue_release = virtio_dev_rx_queue_release,
@@ -623,7 +643,7 @@ virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
}
static void
-virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
+virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
{
unsigned i;
@@ -660,6 +680,64 @@ virtio_dev_stats_get(struct rte_eth_dev *dev, struct
rte_eth_stats *stats)
stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
}
+static int
+virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstats *xstats,
+ unsigned n)
+{
+ unsigned i;
+ unsigned count = 0;
+
+ unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_Q_XSTATS +
+ dev->data->nb_rx_queues * VIRTIO_NB_Q_XSTATS;
+
+ if(n < nstats)
+ return nstats;
+
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ struct virtqueue *rxvq = dev->data->rx_queues[i];
+
+ if(rxvq == NULL)
+ continue;
+
+ unsigned t;
+
+ for(t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
+ snprintf(xstats[count].name, sizeof(xstats[count].name),
+ "rx_q%u_%s", i,
+ rte_virtio_q_stat_strings[t].name);
+ xstats[count].value = *(uint64_t *)(((char *)rxvq) +
+ rte_virtio_q_stat_strings[t].offset);
+ count++;
+ }
+ }
+
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ struct virtqueue *txvq = dev->data->tx_queues[i];
+
+ if(txvq == NULL)
+ continue;
+
+ unsigned t;
+
+ for(t = 0; t < VIRTIO_NB_Q_XSTATS; t++) {
+ snprintf(xstats[count].name, sizeof(xstats[count].name),
+ "tx_q%u_%s", i,
+ rte_virtio_q_stat_strings[t].name);
+ xstats[count].value = *(uint64_t *)(((char *)txvq) +
+ rte_virtio_q_stat_strings[t].offset);
+ count++;
+ }
+ }
+
+ return count;
+}
+
+static void
+virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
+{
+ virtio_update_stats(dev, stats);
+}
+
static void
virtio_dev_stats_reset(struct rte_eth_dev *dev)
{
--
1.9.1
