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vdpa_sim_net: vendor satistics

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This patch adds support for basic vendor stats that include counters
for tx, rx and cvq.

Acked-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221223055548.27810-5-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
This commit is contained in:
Jason Wang 2022-12-23 13:55:48 +08:00 committed by Michael S. Tsirkin
parent 5dbb063a3e
commit 0899774cb3
1 changed files with 213 additions and 6 deletions
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219
drivers/vdpa/vdpa_sim/vdpa_sim_net.c
View File

@ -15,6 +15,7 @@
#include <linux/etherdevice.h>
#include <linux/vringh.h>
#include <linux/vdpa.h>
#include <net/netlink.h>
#include <uapi/linux/virtio_net.h>
#include <uapi/linux/vdpa.h>
@ -37,6 +38,34 @@
#define VDPASIM_NET_AS_NUM 2
#define VDPASIM_NET_GROUP_NUM 2
struct vdpasim_dataq_stats {
struct u64_stats_sync syncp;
u64 pkts;
u64 bytes;
u64 drops;
u64 errors;
u64 overruns;
};
struct vdpasim_cq_stats {
struct u64_stats_sync syncp;
u64 requests;
u64 successes;
u64 errors;
};
struct vdpasim_net{
struct vdpasim vdpasim;
struct vdpasim_dataq_stats tx_stats;
struct vdpasim_dataq_stats rx_stats;
struct vdpasim_cq_stats cq_stats;
};
static struct vdpasim_net *sim_to_net(struct vdpasim *vdpasim)
{
return container_of(vdpasim, struct vdpasim_net, vdpasim);
}
static void vdpasim_net_complete(struct vdpasim_virtqueue *vq, size_t len)
{
/* Make sure data is wrote before advancing index */
@ -97,9 +126,11 @@ static virtio_net_ctrl_ack vdpasim_handle_ctrl_mac(struct vdpasim *vdpasim,
static void vdpasim_handle_cvq(struct vdpasim *vdpasim)
{
struct vdpasim_virtqueue *cvq = &vdpasim->vqs[2];
struct vdpasim_net *net = sim_to_net(vdpasim);
virtio_net_ctrl_ack status = VIRTIO_NET_ERR;
struct virtio_net_ctrl_hdr ctrl;
size_t read, write;
u64 requests = 0, errors = 0, successes = 0;
int err;
if (!(vdpasim->features & (1ULL << VIRTIO_NET_F_CTRL_VQ)))
@ -115,10 +146,13 @@ static void vdpasim_handle_cvq(struct vdpasim *vdpasim)
if (err <= 0)
break;
++requests;
read = vringh_iov_pull_iotlb(&cvq->vring, &cvq->in_iov, &ctrl,
sizeof(ctrl));
if (read != sizeof(ctrl))
if (read != sizeof(ctrl)) {
++errors;
break;
}
switch (ctrl.class) {
case VIRTIO_NET_CTRL_MAC:
@ -128,6 +162,11 @@ static void vdpasim_handle_cvq(struct vdpasim *vdpasim)
break;
}
if (status == VIRTIO_NET_OK)
++successes;
else
++errors;
/* Make sure data is wrote before advancing index */
smp_wmb();
@ -145,6 +184,12 @@ static void vdpasim_handle_cvq(struct vdpasim *vdpasim)
cvq->cb(cvq->private);
local_bh_enable();
}
u64_stats_update_begin(&net->cq_stats.syncp);
net->cq_stats.requests += requests;
net->cq_stats.errors += errors;
net->cq_stats.successes += successes;
u64_stats_update_end(&net->cq_stats.syncp);
}
static void vdpasim_net_work(struct work_struct *work)
@ -152,8 +197,10 @@ static void vdpasim_net_work(struct work_struct *work)
struct vdpasim *vdpasim = container_of(work, struct vdpasim, work);
struct vdpasim_virtqueue *txq = &vdpasim->vqs[1];
struct vdpasim_virtqueue *rxq = &vdpasim->vqs[0];
struct vdpasim_net *net = sim_to_net(vdpasim);
ssize_t read, write;
int pkts = 0;
u64 tx_pkts = 0, rx_pkts = 0, tx_bytes = 0, rx_bytes = 0;
u64 rx_drops = 0, rx_overruns = 0, rx_errors = 0, tx_errors = 0;
int err;
spin_lock(&vdpasim->lock);
@ -172,14 +219,21 @@ static void vdpasim_net_work(struct work_struct *work)
while (true) {
err = vringh_getdesc_iotlb(&txq->vring, &txq->out_iov, NULL,
&txq->head, GFP_ATOMIC);
if (err <= 0)
if (err <= 0) {
if (err)
++tx_errors;
break;
}
++tx_pkts;
read = vringh_iov_pull_iotlb(&txq->vring, &txq->out_iov,
vdpasim->buffer,
PAGE_SIZE);
tx_bytes += read;
if (!receive_filter(vdpasim, read)) {
++rx_drops;
vdpasim_net_complete(txq, 0);
continue;
}
@ -187,19 +241,25 @@ static void vdpasim_net_work(struct work_struct *work)
err = vringh_getdesc_iotlb(&rxq->vring, NULL, &rxq->in_iov,
&rxq->head, GFP_ATOMIC);
if (err <= 0) {
++rx_overruns;
vdpasim_net_complete(txq, 0);
break;
}
write = vringh_iov_push_iotlb(&rxq->vring, &rxq->in_iov,
vdpasim->buffer, read);
if (write <= 0)
if (write <= 0) {
++rx_errors;
break;
}
++rx_pkts;
rx_bytes += write;
vdpasim_net_complete(txq, 0);
vdpasim_net_complete(rxq, write);
if (++pkts > 4) {
if (tx_pkts > 4) {
schedule_work(&vdpasim->work);
goto out;
}
@ -207,6 +267,145 @@ static void vdpasim_net_work(struct work_struct *work)
out:
spin_unlock(&vdpasim->lock);
u64_stats_update_begin(&net->tx_stats.syncp);
net->tx_stats.pkts += tx_pkts;
net->tx_stats.bytes += tx_bytes;
net->tx_stats.errors += tx_errors;
u64_stats_update_end(&net->tx_stats.syncp);
u64_stats_update_begin(&net->rx_stats.syncp);
net->rx_stats.pkts += rx_pkts;
net->rx_stats.bytes += rx_bytes;
net->rx_stats.drops += rx_drops;
net->rx_stats.errors += rx_errors;
net->rx_stats.overruns += rx_overruns;
u64_stats_update_end(&net->rx_stats.syncp);
}
static int vdpasim_net_get_stats(struct vdpasim *vdpasim, u16 idx,
struct sk_buff *msg,
struct netlink_ext_ack *extack)
{
struct vdpasim_net *net = sim_to_net(vdpasim);
u64 rx_pkts, rx_bytes, rx_errors, rx_overruns, rx_drops;
u64 tx_pkts, tx_bytes, tx_errors, tx_drops;
u64 cq_requests, cq_successes, cq_errors;
unsigned int start;
int err = -EMSGSIZE;
switch(idx) {
case 0:
do {
start = u64_stats_fetch_begin(&net->rx_stats.syncp);
rx_pkts = net->rx_stats.pkts;
rx_bytes = net->rx_stats.bytes;
rx_errors = net->rx_stats.errors;
rx_overruns = net->rx_stats.overruns;
rx_drops = net->rx_stats.drops;
} while (u64_stats_fetch_retry(&net->rx_stats.syncp, start));
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"rx packets"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
rx_pkts, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"rx bytes"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
rx_bytes, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"rx errors"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
rx_errors, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"rx overrunss"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
rx_overruns, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"rx drops"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
rx_drops, VDPA_ATTR_PAD))
break;
err = 0;
break;
case 1:
do {
start = u64_stats_fetch_begin(&net->tx_stats.syncp);
tx_pkts = net->tx_stats.pkts;
tx_bytes = net->tx_stats.bytes;
tx_errors = net->tx_stats.errors;
tx_drops = net->tx_stats.drops;
} while (u64_stats_fetch_retry(&net->tx_stats.syncp, start));
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"tx packets"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
tx_pkts, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"tx bytes"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
tx_bytes, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"tx errors"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
tx_errors, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"tx drops"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
tx_drops, VDPA_ATTR_PAD))
break;
err = 0;
break;
case 2:
do {
start = u64_stats_fetch_begin(&net->cq_stats.syncp);
cq_requests = net->cq_stats.requests;
cq_successes = net->cq_stats.successes;
cq_errors = net->cq_stats.errors;
} while (u64_stats_fetch_retry(&net->cq_stats.syncp, start));
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"cvq requests"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
cq_requests, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"cvq successes"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
cq_successes, VDPA_ATTR_PAD))
break;
if (nla_put_string(msg, VDPA_ATTR_DEV_VENDOR_ATTR_NAME,
"cvq errors"))
break;
if (nla_put_u64_64bit(msg, VDPA_ATTR_DEV_VENDOR_ATTR_VALUE,
cq_errors, VDPA_ATTR_PAD))
break;
err = 0;
break;
default:
err = -EINVAL;
break;
}
return err;
}
static void vdpasim_net_get_config(struct vdpasim *vdpasim, void *config)
@ -243,6 +442,7 @@ static int vdpasim_net_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
const struct vdpa_dev_set_config *config)
{
struct vdpasim_dev_attr dev_attr = {};
struct vdpasim_net *net;
struct vdpasim *simdev;
int ret;
@ -253,10 +453,11 @@ static int vdpasim_net_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
dev_attr.nvqs = VDPASIM_NET_VQ_NUM;
dev_attr.ngroups = VDPASIM_NET_GROUP_NUM;
dev_attr.nas = VDPASIM_NET_AS_NUM;
dev_attr.alloc_size = sizeof(struct vdpasim);
dev_attr.alloc_size = sizeof(struct vdpasim_net);
dev_attr.config_size = sizeof(struct virtio_net_config);
dev_attr.get_config = vdpasim_net_get_config;
dev_attr.work_fn = vdpasim_net_work;
dev_attr.get_stats = vdpasim_net_get_stats;
dev_attr.buffer_size = PAGE_SIZE;
simdev = vdpasim_create(&dev_attr, config);
@ -269,6 +470,12 @@ static int vdpasim_net_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
if (ret)
goto reg_err;
net = sim_to_net(simdev);
u64_stats_init(&net->tx_stats.syncp);
u64_stats_init(&net->rx_stats.syncp);
u64_stats_init(&net->cq_stats.syncp);
return 0;
reg_err: