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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* Copyright (c) 2019 Mellanox Technologies. All rights reserved.
*/
#include <rdma/ib_verbs.h>
#include <rdma/rdma_counter.h>
#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)
{
}
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