linux/drivers/infiniband/hw/mlx4/cq.c

/*
 * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
 * Copyright (c) 2007, 2008 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/mlx4/cq.h>
#include <linux/mlx4/qp.h>
#include <linux/mlx4/srq.h>
#include <linux/slab.h>

#include "mlx4_ib.h"
#include <rdma/mlx4-abi.h>
#include <rdma/uverbs_ioctl.h>

static void mlx4_ib_cq_comp(struct mlx4_cq *cq)
{ … }

static void mlx4_ib_cq_event(struct mlx4_cq *cq, enum mlx4_event type)
{ … }

static void *get_cqe_from_buf(struct mlx4_ib_cq_buf *buf, int n)
{ … }

static void *get_cqe(struct mlx4_ib_cq *cq, int n)
{ … }

static void *get_sw_cqe(struct mlx4_ib_cq *cq, int n)
{ … }

static struct mlx4_cqe *next_cqe_sw(struct mlx4_ib_cq *cq)
{ … }

int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
{ … }

static int mlx4_ib_alloc_cq_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq_buf *buf, int nent)
{ … }

static void mlx4_ib_free_cq_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq_buf *buf, int cqe)
{ … }

static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev,
			       struct mlx4_ib_cq_buf *buf,
			       struct ib_umem **umem, u64 buf_addr, int cqe)
{ … }

#define CQ_CREATE_FLAGS_SUPPORTED …
int mlx4_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
		      struct uverbs_attr_bundle *attrs)
{ … }

static int mlx4_alloc_resize_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq *cq,
				  int entries)
{ … }

static int mlx4_alloc_resize_umem(struct mlx4_ib_dev *dev, struct mlx4_ib_cq *cq,
				   int entries, struct ib_udata *udata)
{ … }

static int mlx4_ib_get_outstanding_cqes(struct mlx4_ib_cq *cq)
{ … }

static void mlx4_ib_cq_resize_copy_cqes(struct mlx4_ib_cq *cq)
{ … }

int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
{ … }

int mlx4_ib_destroy_cq(struct ib_cq *cq, struct ib_udata *udata)
{ … }

static void dump_cqe(void *cqe)
{ … }

static void mlx4_ib_handle_error_cqe(struct mlx4_err_cqe *cqe,
				     struct ib_wc *wc)
{ … }

static int mlx4_ib_ipoib_csum_ok(__be16 status, u8 badfcs_enc, __be16 checksum)
{ … }

static void use_tunnel_data(struct mlx4_ib_qp *qp, struct mlx4_ib_cq *cq, struct ib_wc *wc,
			    unsigned tail, struct mlx4_cqe *cqe, int is_eth)
{ … }

static void mlx4_ib_qp_sw_comp(struct mlx4_ib_qp *qp, int num_entries,
			       struct ib_wc *wc, int *npolled, int is_send)
{ … }

static void mlx4_ib_poll_sw_comp(struct mlx4_ib_cq *cq, int num_entries,
				 struct ib_wc *wc, int *npolled)
{ … }

static int mlx4_ib_poll_one(struct mlx4_ib_cq *cq,
			    struct mlx4_ib_qp **cur_qp,
			    struct ib_wc *wc)
{ … }

int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
{ … }

int mlx4_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
{ … }

void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq)
{ … }

void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq)
{ … }