From c4ffee7c9bdba7b189df3251e375c4c7e93a91ac Mon Sep 17 00:00:00 2001 From: Mark Zhang Date: Tue, 2 Jul 2019 13:02:40 +0300 Subject: [PATCH] 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 Reviewed-by: Majd Dibbiny Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- drivers/infiniband/core/counters.c | 26 +++- drivers/infiniband/core/device.c | 2 + drivers/infiniband/core/nldev.c | 213 +++++++++++++++++++++++++++++ include/rdma/ib_verbs.h | 10 ++ include/rdma/rdma_counter.h | 3 + include/uapi/rdma/rdma_netlink.h | 22 ++- 6 files changed, 268 insertions(+), 8 deletions(-) diff --git a/drivers/infiniband/core/counters.c b/drivers/infiniband/core/counters.c index 615ee731a1de..3741b9e5126a 100644 --- a/drivers/infiniband/core/counters.c +++ b/drivers/infiniband/core/counters.c @@ -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; diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index f3181b74c863..bdf61499e6d5 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -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); diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index 9a4cf285f447..cebc15b23b15 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -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) diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 0205472eb73a..0c5151a12ae4 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -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); diff --git a/include/rdma/rdma_counter.h b/include/rdma/rdma_counter.h index 9f93a2403c9c..f2a5c8efc404 100644 --- a/include/rdma/rdma_counter.h +++ b/include/rdma/rdma_counter.h @@ -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_ */ diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h index 0cb47d23fd86..18dd88c0add8 100644 --- a/include/uapi/rdma/rdma_netlink.h +++ b/include/uapi/rdma/rdma_netlink.h @@ -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