Release 4.15 drivers/net/ethernet/mellanox/mlx5/core/cq.c
/*
* Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/hardirq.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/cmd.h>
#include <rdma/ib_verbs.h>
#include <linux/mlx5/cq.h>
#include "mlx5_core.h"
#define TASKLET_MAX_TIME 2
#define TASKLET_MAX_TIME_JIFFIES msecs_to_jiffies(TASKLET_MAX_TIME)
void mlx5_cq_tasklet_cb(unsigned long data)
{
unsigned long flags;
unsigned long end = jiffies + TASKLET_MAX_TIME_JIFFIES;
struct mlx5_eq_tasklet *ctx = (struct mlx5_eq_tasklet *)data;
struct mlx5_core_cq *mcq;
struct mlx5_core_cq *temp;
spin_lock_irqsave(&ctx->lock, flags);
list_splice_tail_init(&ctx->list, &ctx->process_list);
spin_unlock_irqrestore(&ctx->lock, flags);
list_for_each_entry_safe(mcq, temp, &ctx->process_list,
tasklet_ctx.list) {
list_del_init(&mcq->tasklet_ctx.list);
mcq->tasklet_ctx.comp(mcq);
if (refcount_dec_and_test(&mcq->refcount))
complete(&mcq->free);
if (time_after(jiffies, end))
break;
}
if (!list_empty(&ctx->process_list))
tasklet_schedule(&ctx->task);
}
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| Total | 154 | 100.00% | 2 | 100.00% |
static void mlx5_add_cq_to_tasklet(struct mlx5_core_cq *cq)
{
unsigned long flags;
struct mlx5_eq_tasklet *tasklet_ctx = cq->tasklet_ctx.priv;
spin_lock_irqsave(&tasklet_ctx->lock, flags);
/* When migrating CQs between EQs will be implemented, please note
* that you need to sync this point. It is possible that
* while migrating a CQ, completions on the old EQs could
* still arrive.
*/
if (list_empty_careful(&cq->tasklet_ctx.list)) {
refcount_inc(&cq->refcount);
list_add_tail(&cq->tasklet_ctx.list, &tasklet_ctx->list);
}
spin_unlock_irqrestore(&tasklet_ctx->lock, flags);
}
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void mlx5_cq_completion(struct mlx5_core_dev *dev, u32 cqn)
{
struct mlx5_core_cq *cq;
struct mlx5_cq_table *table = &dev->priv.cq_table;
spin_lock(&table->lock);
cq = radix_tree_lookup(&table->tree, cqn);
if (likely(cq))
refcount_inc(&cq->refcount);
spin_unlock(&table->lock);
if (!cq) {
mlx5_core_warn(dev, "Completion event for bogus CQ 0x%x\n", cqn);
return;
}
++cq->arm_sn;
cq->comp(cq);
if (refcount_dec_and_test(&cq->refcount))
complete(&cq->free);
}
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| Eli Cohen | 118 | 98.33% | 1 | 50.00% |
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| Total | 120 | 100.00% | 2 | 100.00% |
void mlx5_cq_event(struct mlx5_core_dev *dev, u32 cqn, int event_type)
{
struct mlx5_cq_table *table = &dev->priv.cq_table;
struct mlx5_core_cq *cq;
spin_lock(&table->lock);
cq = radix_tree_lookup(&table->tree, cqn);
if (cq)
refcount_inc(&cq->refcount);
spin_unlock(&table->lock);
if (!cq) {
mlx5_core_warn(dev, "Async event for bogus CQ 0x%x\n", cqn);
return;
}
cq->event(cq, event_type);
if (refcount_dec_and_test(&cq->refcount))
complete(&cq->free);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Eli Cohen | 115 | 98.29% | 1 | 50.00% |
| Elena Reshetova | 2 | 1.71% | 1 | 50.00% |
| Total | 117 | 100.00% | 2 | 100.00% |
int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
u32 *in, int inlen)
{
struct mlx5_cq_table *table = &dev->priv.cq_table;
u32 out[MLX5_ST_SZ_DW(create_cq_out)];
u32 din[MLX5_ST_SZ_DW(destroy_cq_in)];
u32 dout[MLX5_ST_SZ_DW(destroy_cq_out)];
int eqn = MLX5_GET(cqc, MLX5_ADDR_OF(create_cq_in, in, cq_context),
c_eqn);
struct mlx5_eq *eq;
int err;
eq = mlx5_eqn2eq(dev, eqn);
if (IS_ERR(eq))
return PTR_ERR(eq);
memset(out, 0, sizeof(out));
MLX5_SET(create_cq_in, in, opcode, MLX5_CMD_OP_CREATE_CQ);
err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
if (err)
return err;
cq->cqn = MLX5_GET(create_cq_out, out, cqn);
cq->cons_index = 0;
cq->arm_sn = 0;
refcount_set(&cq->refcount, 1);
init_completion(&cq->free);
if (!cq->comp)
cq->comp = mlx5_add_cq_to_tasklet;
/* assuming CQ will be deleted before the EQ */
cq->tasklet_ctx.priv = &eq->tasklet_ctx;
INIT_LIST_HEAD(&cq->tasklet_ctx.list);
spin_lock_irq(&table->lock);
err = radix_tree_insert(&table->tree, cq->cqn, cq);
spin_unlock_irq(&table->lock);
if (err)
goto err_cmd;
cq->pid = current->pid;
err = mlx5_debug_cq_add(dev, cq);
if (err)
mlx5_core_dbg(dev, "failed adding CP 0x%x to debug file system\n",
cq->cqn);
cq->uar = dev->priv.uar;
return 0;
err_cmd:
memset(din, 0, sizeof(din));
memset(dout, 0, sizeof(dout));
MLX5_SET(destroy_cq_in, din, opcode, MLX5_CMD_OP_DESTROY_CQ);
MLX5_SET(destroy_cq_in, din, cqn, cq->cqn);
mlx5_cmd_exec(dev, din, sizeof(din), dout, sizeof(dout));
return err;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Eli Cohen | 249 | 63.52% | 2 | 40.00% |
| Matan Barak | 81 | 20.66% | 1 | 20.00% |
| Saeed Mahameed | 61 | 15.56% | 1 | 20.00% |
| Elena Reshetova | 1 | 0.26% | 1 | 20.00% |
| Total | 392 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(mlx5_core_create_cq);
int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
{
struct mlx5_cq_table *table = &dev->priv.cq_table;
u32 out[MLX5_ST_SZ_DW(destroy_cq_out)] = {0};
u32 in[MLX5_ST_SZ_DW(destroy_cq_in)] = {0};
struct mlx5_core_cq *tmp;
int err;
spin_lock_irq(&table->lock);
tmp = radix_tree_delete(&table->tree, cq->cqn);
spin_unlock_irq(&table->lock);
if (!tmp) {
mlx5_core_warn(dev, "cq 0x%x not found in tree\n", cq->cqn);
return -EINVAL;
}
if (tmp != cq) {
mlx5_core_warn(dev, "corruption on srqn 0x%x\n", cq->cqn);
return -EINVAL;
}
MLX5_SET(destroy_cq_in, in, opcode, MLX5_CMD_OP_DESTROY_CQ);
MLX5_SET(destroy_cq_in, in, cqn, cq->cqn);
err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
if (err)
return err;
synchronize_irq(cq->irqn);
mlx5_debug_cq_remove(dev, cq);
if (refcount_dec_and_test(&cq->refcount))
complete(&cq->free);
wait_for_completion(&cq->free);
return 0;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Eli Cohen | 195 | 84.42% | 1 | 33.33% |
| Saeed Mahameed | 35 | 15.15% | 1 | 33.33% |
| Elena Reshetova | 1 | 0.43% | 1 | 33.33% |
| Total | 231 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL(mlx5_core_destroy_cq);
int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
u32 *out, int outlen)
{
u32 in[MLX5_ST_SZ_DW(query_cq_in)] = {0};
MLX5_SET(query_cq_in, in, opcode, MLX5_CMD_OP_QUERY_CQ);
MLX5_SET(query_cq_in, in, cqn, cq->cqn);
return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Eli Cohen | 50 | 65.79% | 1 | 33.33% |
| Saeed Mahameed | 26 | 34.21% | 2 | 66.67% |
| Total | 76 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL(mlx5_core_query_cq);
int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
u32 *in, int inlen)
{
u32 out[MLX5_ST_SZ_DW(modify_cq_out)] = {0};
MLX5_SET(modify_cq_in, in, opcode, MLX5_CMD_OP_MODIFY_CQ);
return mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Eli Cohen | 44 | 69.84% | 3 | 60.00% |
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| Total | 63 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(mlx5_core_modify_cq);
int mlx5_core_modify_cq_moderation(struct mlx5_core_dev *dev,
struct mlx5_core_cq *cq,
u16 cq_period,
u16 cq_max_count)
{
u32 in[MLX5_ST_SZ_DW(modify_cq_in)] = {0};
void *cqc;
MLX5_SET(modify_cq_in, in, cqn, cq->cqn);
cqc = MLX5_ADDR_OF(modify_cq_in, in, cq_context);
MLX5_SET(cqc, cqc, cq_period, cq_period);
MLX5_SET(cqc, cqc, cq_max_count, cq_max_count);
MLX5_SET(modify_cq_in, in,
modify_field_select_resize_field_select.modify_field_select.modify_field_select,
MLX5_CQ_MODIFY_PERIOD | MLX5_CQ_MODIFY_COUNT);
return mlx5_core_modify_cq(dev, cq, in, sizeof(in));
}
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| Total | 116 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(mlx5_core_modify_cq_moderation);
int mlx5_init_cq_table(struct mlx5_core_dev *dev)
{
struct mlx5_cq_table *table = &dev->priv.cq_table;
int err;
memset(table, 0, sizeof(*table));
spin_lock_init(&table->lock);
INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
err = mlx5_cq_debugfs_init(dev);
return err;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Eli Cohen | 53 | 80.30% | 1 | 50.00% |
| Majd Dibbiny | 13 | 19.70% | 1 | 50.00% |
| Total | 66 | 100.00% | 2 | 100.00% |
void mlx5_cleanup_cq_table(struct mlx5_core_dev *dev)
{
mlx5_cq_debugfs_cleanup(dev);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Eli Cohen | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eli Cohen | 883 | 59.18% | 4 | 36.36% |
| Matan Barak | 325 | 21.78% | 1 | 9.09% |
| Saeed Mahameed | 200 | 13.40% | 3 | 27.27% |
| Rana Shahout | 63 | 4.22% | 1 | 9.09% |
| Majd Dibbiny | 13 | 0.87% | 1 | 9.09% |
| Elena Reshetova | 8 | 0.54% | 1 | 9.09% |
| Total | 1492 | 100.00% | 11 | 100.00% |
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