From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: [PATCH rdma-next v1 05/17] RDMA/counter: Add set/clear per-port auto mode support Date: Sun, 7 Apr 2019 10:50:01 +0300 Message-ID: <20190407075013.12955-6-leon@kernel.org> References: <20190407075013.12955-1-leon@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190407075013.12955-1-leon@kernel.org> Sender: netdev-owner@vger.kernel.org To: Doug Ledford , Jason Gunthorpe Cc: Leon Romanovsky , RDMA mailing list , Majd Dibbiny , Mark Zhang , Saeed Mahameed , linux-netdev List-Id: linux-rdma@vger.kernel.org From: Mark Zhang Add an API to support set/clear per-port auto mode. Signed-off-by: Mark Zhang Reviewed-by: Majd Dibbiny Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/Makefile | 2 +- drivers/infiniband/core/counters.c | 77 ++++++++++++++++++++++++++++++ drivers/infiniband/core/device.c | 4 ++ include/rdma/ib_verbs.h | 2 + include/rdma/rdma_counter.h | 24 ++++++++++ include/uapi/rdma/rdma_netlink.h | 26 ++++++++++ 6 files changed, 134 insertions(+), 1 deletion(-) create mode 100644 drivers/infiniband/core/counters.c diff --git a/drivers/infiniband/core/Makefile b/drivers/infiniband/core/Makefile index 313f2349b518..cddf748c15c9 100644 --- a/drivers/infiniband/core/Makefile +++ b/drivers/infiniband/core/Makefile @@ -12,7 +12,7 @@ ib_core-y := packer.o ud_header.o verbs.o cq.o rw.o sysfs.o \ device.o fmr_pool.o cache.o netlink.o \ roce_gid_mgmt.o mr_pool.o addr.o sa_query.o \ multicast.o mad.o smi.o agent.o mad_rmpp.o \ - nldev.o restrack.o + nldev.o restrack.o counters.o ib_core-$(CONFIG_SECURITY_INFINIBAND) += security.o ib_core-$(CONFIG_CGROUP_RDMA) += cgroup.o diff --git a/drivers/infiniband/core/counters.c b/drivers/infiniband/core/counters.c new file mode 100644 index 000000000000..bda8d945a758 --- /dev/null +++ b/drivers/infiniband/core/counters.c @@ -0,0 +1,77 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* + * Copyright (c) 2019 Mellanox Technologies. All rights reserved. + */ +#include +#include + +#include "core_priv.h" +#include "restrack.h" + +#define ALL_AUTO_MODE_MASKS (RDMA_COUNTER_MASK_QP_TYPE) + +static int __counter_set_mode(struct rdma_counter_mode *curr, + enum rdma_nl_counter_mode new_mode, + enum rdma_nl_counter_mask new_mask) +{ + if ((new_mode == RDMA_COUNTER_MODE_AUTO) && + ((new_mask & (~ALL_AUTO_MODE_MASKS)) || + (curr->mode != RDMA_COUNTER_MODE_NONE))) + return -EINVAL; + + curr->mode = new_mode; + curr->mask = new_mask; + return 0; +} + +/** + * rdma_counter_set_auto_mode() - Turn on/off per-port auto mode + * + * When @on is true, the @mask must be set + */ +int rdma_counter_set_auto_mode(struct ib_device *dev, u8 port, + bool on, enum rdma_nl_counter_mask mask) +{ + struct rdma_port_counter *port_counter; + int ret; + + if (!rdma_is_port_valid(dev, port)) + return -EINVAL; + + port_counter = &dev->port_data[port].port_counter; + mutex_lock(&port_counter->lock); + if (on) { + ret = __counter_set_mode(&port_counter->mode, + RDMA_COUNTER_MODE_AUTO, mask); + } else { + if (port_counter->mode.mode != RDMA_COUNTER_MODE_AUTO) { + ret = -EINVAL; + goto out; + } + ret = __counter_set_mode(&port_counter->mode, + RDMA_COUNTER_MODE_NONE, 0); + } + +out: + mutex_unlock(&port_counter->lock); + return ret; +} + +void rdma_counter_init(struct ib_device *dev) +{ + struct rdma_port_counter *port_counter; + u32 port; + + if (!dev->ops.alloc_hw_stats) + return; + + rdma_for_each_port(dev, port) { + port_counter = &dev->port_data[port].port_counter; + port_counter->mode.mode = RDMA_COUNTER_MODE_NONE; + mutex_init(&port_counter->lock); + } +} + +void rdma_counter_cleanup(struct ib_device *dev) +{ +} diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 2b8254dd4c67..6160b67a9f44 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -46,6 +46,7 @@ #include #include #include +#include #include "core_priv.h" #include "restrack.h" @@ -1275,6 +1276,8 @@ int ib_register_device(struct ib_device *device, const char *name) goto dev_cleanup; } + rdma_counter_init(device); + ret = enable_device_and_get(device); if (ret) { void (*dealloc_fn)(struct ib_device *); @@ -1325,6 +1328,7 @@ static void __ib_unregister_device(struct ib_device *ib_dev) goto out; disable_device(ib_dev); + rdma_counter_cleanup(ib_dev); /* Expedite removing unregistered pointers from the hash table */ free_netdevs(ib_dev); diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 43a75ab8ea8a..605ff2729ea9 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -62,6 +62,7 @@ #include #include #include +#include #include #include #include @@ -2213,6 +2214,7 @@ struct ib_port_data { spinlock_t netdev_lock; struct net_device __rcu *netdev; struct hlist_node ndev_hash_link; + struct rdma_port_counter port_counter; }; /* rdma netdev type - specifies protocol type */ diff --git a/include/rdma/rdma_counter.h b/include/rdma/rdma_counter.h index 283ac1a0cdb7..a8a7c1627800 100644 --- a/include/rdma/rdma_counter.h +++ b/include/rdma/rdma_counter.h @@ -6,8 +6,26 @@ #ifndef _RDMA_COUNTER_H_ #define _RDMA_COUNTER_H_ +#include + #include #include +#include + +struct auto_mode_param { + int qp_type; +}; + +struct rdma_counter_mode { + enum rdma_nl_counter_mode mode; + enum rdma_nl_counter_mask mask; + struct auto_mode_param param; +}; + +struct rdma_port_counter { + struct rdma_counter_mode mode; + struct mutex lock; +}; struct rdma_counter { struct rdma_restrack_entry res; @@ -15,4 +33,10 @@ struct rdma_counter { uint32_t id; u8 port; }; + +void rdma_counter_init(struct ib_device *dev); +void rdma_counter_cleanup(struct ib_device *dev); +int rdma_counter_set_auto_mode(struct ib_device *dev, u8 port, + bool on, enum rdma_nl_counter_mask mask); + #endif /* _RDMA_COUNTER_H_ */ diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h index 644f2772e830..e910ff6a2a80 100644 --- a/include/uapi/rdma/rdma_netlink.h +++ b/include/uapi/rdma/rdma_netlink.h @@ -484,4 +484,30 @@ enum rdma_nldev_attr { */ RDMA_NLDEV_ATTR_MAX }; + +/* + * Supported counter bind modes. All modes are mutual-exclusive. + */ +enum rdma_nl_counter_mode { + RDMA_COUNTER_MODE_NONE, + + /* + * A qp is bound with a counter automatically during initialization + * based on the auto mode (e.g., qp type, ...) + */ + RDMA_COUNTER_MODE_AUTO, + + /* + * Always the end + */ + RDMA_COUNTER_MODE_MAX, +}; + +/* + * Supported criteria in counter auto mode. + * Currently only "qp type" is supported + */ +enum rdma_nl_counter_mask { + RDMA_COUNTER_MASK_QP_TYPE = 1, +}; #endif /* _UAPI_RDMA_NETLINK_H */ -- 2.20.1