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RDMA/netlink: Implement counter dumpit calback 

This patch adds the ability to return all available counters together with
their properties and hwstats.

Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Mark Zhang 2019-07-02 13:02:40 +03:00 committed by Jason Gunthorpe
parent b47ae6f803
commit c4ffee7c9b
6 changed files with 268 additions and 8 deletions
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26
drivers/infiniband/core/counters.c
View File

@ -59,7 +59,7 @@ static struct rdma_counter *rdma_counter_alloc(struct ib_device *dev, u8 port,
{
struct rdma_counter *counter;
if (!dev->ops.counter_dealloc)
if (!dev->ops.counter_dealloc || !dev->ops.counter_alloc_stats)
return NULL;
counter = kzalloc(sizeof(*counter), GFP_KERNEL);
@ -69,16 +69,25 @@ static struct rdma_counter *rdma_counter_alloc(struct ib_device *dev, u8 port,
counter->device = dev;
counter->port = port;
counter->res.type = RDMA_RESTRACK_COUNTER;
counter->stats = dev->ops.counter_alloc_stats(counter);
if (!counter->stats)
goto err_stats;
counter->mode.mode = mode;
kref_init(&counter->kref);
mutex_init(&counter->lock);
return counter;
err_stats:
kfree(counter);
return NULL;
}
static void rdma_counter_free(struct rdma_counter *counter)
{
rdma_restrack_del(&counter->res);
kfree(counter->stats);
kfree(counter);
}
@ -275,6 +284,21 @@ int rdma_counter_unbind_qp(struct ib_qp *qp, bool force)
return 0;
}
int rdma_counter_query_stats(struct rdma_counter *counter)
{
struct ib_device *dev = counter->device;
int ret;
if (!dev->ops.counter_update_stats)
return -EINVAL;
mutex_lock(&counter->lock);
ret = dev->ops.counter_update_stats(counter);
mutex_unlock(&counter->lock);
return ret;
}
void rdma_counter_init(struct ib_device *dev)
{
struct rdma_port_counter *port_counter;

2
drivers/infiniband/core/device.c
View File

@ -2471,9 +2471,11 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, alloc_xrcd);
SET_DEVICE_OP(dev_ops, attach_mcast);
SET_DEVICE_OP(dev_ops, check_mr_status);
SET_DEVICE_OP(dev_ops, counter_alloc_stats);
SET_DEVICE_OP(dev_ops, counter_bind_qp);
SET_DEVICE_OP(dev_ops, counter_dealloc);
SET_DEVICE_OP(dev_ops, counter_unbind_qp);
SET_DEVICE_OP(dev_ops, counter_update_stats);
SET_DEVICE_OP(dev_ops, create_ah);
SET_DEVICE_OP(dev_ops, create_counters);
SET_DEVICE_OP(dev_ops, create_cq);

213
drivers/infiniband/core/nldev.c
View File

@ -129,6 +129,13 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_MODE] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_RES] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_COUNTER] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] = { .type = NLA_U32 },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY] = { .type = NLA_NESTED },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME] = { .type = NLA_NUL_STRING },
[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 },
[RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID] = { .type = NLA_U32 },
[RDMA_NLDEV_NET_NS_FD] = { .type = NLA_U32 },
@ -636,6 +643,152 @@ static int fill_res_pd_entry(struct sk_buff *msg, bool has_cap_net_admin,
err: return -EMSGSIZE;
}
static int fill_stat_counter_mode(struct sk_buff *msg,
struct rdma_counter *counter)
{
struct rdma_counter_mode *m = &counter->mode;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, m->mode))
return -EMSGSIZE;
if (m->mode == RDMA_COUNTER_MODE_AUTO)
if ((m->mask & RDMA_COUNTER_MASK_QP_TYPE) &&
nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, m->param.qp_type))
return -EMSGSIZE;
return 0;
}
static int fill_stat_counter_qp_entry(struct sk_buff *msg, u32 qpn)
{
struct nlattr *entry_attr;
entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY);
if (!entry_attr)
return -EMSGSIZE;
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn))
goto err;
nla_nest_end(msg, entry_attr);
return 0;
err:
nla_nest_cancel(msg, entry_attr);
return -EMSGSIZE;
}
static int fill_stat_counter_qps(struct sk_buff *msg,
struct rdma_counter *counter)
{
struct rdma_restrack_entry *res;
struct rdma_restrack_root *rt;
struct nlattr *table_attr;
struct ib_qp *qp = NULL;
unsigned long id = 0;
int ret = 0;
table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP);
rt = &counter->device->res[RDMA_RESTRACK_QP];
xa_lock(&rt->xa);
xa_for_each(&rt->xa, id, res) {
if (!rdma_is_visible_in_pid_ns(res))
continue;
qp = container_of(res, struct ib_qp, res);
if (qp->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW))
continue;
if (!qp->counter || (qp->counter->id != counter->id))
continue;
ret = fill_stat_counter_qp_entry(msg, qp->qp_num);
if (ret)
goto err;
}
xa_unlock(&rt->xa);
nla_nest_end(msg, table_attr);
return 0;
err:
xa_unlock(&rt->xa);
nla_nest_cancel(msg, table_attr);
return ret;
}
static int fill_stat_hwcounter_entry(struct sk_buff *msg,
const char *name, u64 value)
{
struct nlattr *entry_attr;
entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY);
if (!entry_attr)
return -EMSGSIZE;
if (nla_put_string(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME,
name))
goto err;
if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE,
value, RDMA_NLDEV_ATTR_PAD))
goto err;
nla_nest_end(msg, entry_attr);
return 0;
err:
nla_nest_cancel(msg, entry_attr);
return -EMSGSIZE;
}
static int fill_stat_counter_hwcounters(struct sk_buff *msg,
struct rdma_counter *counter)
{
struct rdma_hw_stats *st = counter->stats;
struct nlattr *table_attr;
int i;
table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS);
if (!table_attr)
return -EMSGSIZE;
for (i = 0; i < st->num_counters; i++)
if (fill_stat_hwcounter_entry(msg, st->names[i], st->value[i]))
goto err;
nla_nest_end(msg, table_attr);
return 0;
err:
nla_nest_cancel(msg, table_attr);
return -EMSGSIZE;
}
static int fill_res_counter_entry(struct sk_buff *msg, bool has_cap_net_admin,
struct rdma_restrack_entry *res,
uint32_t port)
{
struct rdma_counter *counter =
container_of(res, struct rdma_counter, res);
if (port && port != counter->port)
return 0;
/* Dump it even query failed */
rdma_counter_query_stats(counter);
if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, counter->port) ||
nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, counter->id) ||
fill_res_name_pid(msg, &counter->res) ||
fill_stat_counter_mode(msg, counter) ||
fill_stat_counter_qps(msg, counter) ||
fill_stat_counter_hwcounters(msg, counter))
return -EMSGSIZE;
return 0;
}
static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
@ -1003,6 +1156,13 @@ static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
.entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY,
.id = RDMA_NLDEV_ATTR_RES_PDN,
},
[RDMA_RESTRACK_COUNTER] = {
.fill_res_func = fill_res_counter_entry,
.nldev_cmd = RDMA_NLDEV_CMD_STAT_GET,
.nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER,
.entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY,
.id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID,
},
};
static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
@ -1239,6 +1399,7 @@ RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID);
RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ);
RES_GET_FUNCS(pd, RDMA_RESTRACK_PD);
RES_GET_FUNCS(mr, RDMA_RESTRACK_MR);
RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
static LIST_HEAD(link_ops);
static DECLARE_RWSEM(link_ops_rwsem);
@ -1557,6 +1718,54 @@ err:
return ret;
}
static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
int ret;
ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, extack);
if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES])
return -EINVAL;
switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
case RDMA_NLDEV_ATTR_RES_QP:
ret = nldev_res_get_counter_doit(skb, nlh, extack);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int nldev_stat_get_dumpit(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
int ret;
ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
nldev_policy, NULL);
if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES])
return -EINVAL;
switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) {
case RDMA_NLDEV_ATTR_RES_QP:
ret = nldev_res_get_counter_dumpit(skb, cb);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
[RDMA_NLDEV_CMD_GET] = {
.doit = nldev_get_doit,
@ -1615,6 +1824,10 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
.doit = nldev_stat_set_doit,
.flags = RDMA_NL_ADMIN_PERM,
},
[RDMA_NLDEV_CMD_STAT_GET] = {
.doit = nldev_stat_get_doit,
.dump = nldev_stat_get_dumpit,
},
};
void __init nldev_init(void)

10
include/rdma/ib_verbs.h
View File

@ -2503,6 +2503,16 @@ struct ib_device_ops {
* counter_dealloc -De-allocate the hw counter
*/
int (*counter_dealloc)(struct rdma_counter *counter);
/**
* counter_alloc_stats - Allocate a struct rdma_hw_stats and fill in
* the driver initialized data.
*/
struct rdma_hw_stats *(*counter_alloc_stats)(
struct rdma_counter *counter);
/**
* counter_update_stats - Query the stats value of this counter
*/
int (*counter_update_stats)(struct rdma_counter *counter);
DECLARE_RDMA_OBJ_SIZE(ib_ah);
DECLARE_RDMA_OBJ_SIZE(ib_cq);

3
include/rdma/rdma_counter.h
View File

@ -37,6 +37,7 @@ struct rdma_counter {
struct kref kref;
struct rdma_counter_mode mode;
struct mutex lock;
struct rdma_hw_stats *stats;
u8 port;
};
@ -47,4 +48,6 @@ int rdma_counter_set_auto_mode(struct ib_device *dev, u8 port,
int rdma_counter_bind_qp_auto(struct ib_qp *qp, u8 port);
int rdma_counter_unbind_qp(struct ib_qp *qp, bool force);
int rdma_counter_query_stats(struct rdma_counter *counter);
#endif /* _RDMA_COUNTER_H_ */

22
include/uapi/rdma/rdma_netlink.h
View File

@ -283,6 +283,8 @@ enum rdma_nldev_command {
RDMA_NLDEV_CMD_STAT_SET,
RDMA_NLDEV_CMD_STAT_GET, /* can dump */
RDMA_NLDEV_NUM_OPS
};
@ -490,13 +492,6 @@ enum rdma_nldev_attr {
* File descriptor handle of the net namespace object
*/
RDMA_NLDEV_NET_NS_FD, /* u32 */
/*
* Counter-specific attributes.
*/
RDMA_NLDEV_ATTR_STAT_MODE, /* u32 */
RDMA_NLDEV_ATTR_STAT_RES, /* u32 */
RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, /* u32 */
/*
* Information about a chardev.
* CHARDEV_TYPE is the name of the chardev ABI (ie uverbs, umad, etc)
@ -509,6 +504,19 @@ enum rdma_nldev_attr {
RDMA_NLDEV_ATTR_CHARDEV_ABI, /* u64 */
RDMA_NLDEV_ATTR_CHARDEV, /* u64 */
RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID, /* u64 */
/*
* Counter-specific attributes.
*/
RDMA_NLDEV_ATTR_STAT_MODE, /* u32 */
RDMA_NLDEV_ATTR_STAT_RES, /* u32 */
RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, /* u32 */
RDMA_NLDEV_ATTR_STAT_COUNTER, /* nested table */
RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY, /* nested table */
RDMA_NLDEV_ATTR_STAT_COUNTER_ID, /* u32 */
RDMA_NLDEV_ATTR_STAT_HWCOUNTERS, /* nested table */
RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY, /* nested table */
RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME, /* string */
RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE, /* u64 */
/*
* Always the end