From 413d3347503bc39e17577eaf16451fd492a68558 Mon Sep 17 00:00:00 2001 From: Mark Zhang Date: Tue, 2 Jul 2019 13:02:34 +0300 Subject: RDMA/counter: Add set/clear per-port auto mode support 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 Signed-off-by: Jason Gunthorpe --- drivers/infiniband/core/counters.c | 74 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 drivers/infiniband/core/counters.c (limited to 'drivers/infiniband/core/counters.c') diff --git a/drivers/infiniband/core/counters.c b/drivers/infiniband/core/counters.c new file mode 100644 index 000000000000..6167914fba06 --- /dev/null +++ b/drivers/infiniband/core/counters.c @@ -0,0 +1,74 @@ +// 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; + + 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 || !dev->port_data) + 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_release(struct ib_device *dev) +{ +} -- cgit v1.2.3-59-g8ed1b