linux/drivers/infiniband/hw/qedr/qedr_roce_cm.c

/* QLogic qedr NIC Driver
 * Copyright (c) 2015-2016  QLogic Corporation
 *
 * 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/dma-mapping.h>
#include <linux/crc32.h>
#include <linux/iommu.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/udp.h>

#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/iw_cm.h>
#include <rdma/ib_umem.h>
#include <rdma/ib_addr.h>
#include <rdma/ib_cache.h>

#include <linux/qed/qed_if.h>
#include <linux/qed/qed_rdma_if.h>
#include "qedr.h"
#include "verbs.h"
#include <rdma/qedr-abi.h>
#include "qedr_roce_cm.h"

void qedr_inc_sw_gsi_cons(struct qedr_qp_hwq_info *info)
{ … }

void qedr_store_gsi_qp_cq(struct qedr_dev *dev, struct qedr_qp *qp,
			  struct ib_qp_init_attr *attrs)
{ … }

static void qedr_ll2_complete_tx_packet(void *cxt, u8 connection_handle,
					void *cookie,
					dma_addr_t first_frag_addr,
					bool b_last_fragment,
					bool b_last_packet)
{ … }

static void qedr_ll2_complete_rx_packet(void *cxt,
					struct qed_ll2_comp_rx_data *data)
{ … }

static void qedr_ll2_release_rx_packet(void *cxt, u8 connection_handle,
				       void *cookie, dma_addr_t rx_buf_addr,
				       bool b_last_packet)
{ … }

static void qedr_destroy_gsi_cq(struct qedr_dev *dev,
				struct ib_qp_init_attr *attrs)
{ … }

static inline int qedr_check_gsi_qp_attrs(struct qedr_dev *dev,
					  struct ib_qp_init_attr *attrs)
{ … }

static int qedr_ll2_post_tx(struct qedr_dev *dev,
			    struct qed_roce_ll2_packet *pkt)
{ … }

static int qedr_ll2_stop(struct qedr_dev *dev)
{ … }

static int qedr_ll2_start(struct qedr_dev *dev,
			  struct ib_qp_init_attr *attrs, struct qedr_qp *qp)
{ … }

int qedr_create_gsi_qp(struct qedr_dev *dev, struct ib_qp_init_attr *attrs,
		       struct qedr_qp *qp)
{ … }

int qedr_destroy_gsi_qp(struct qedr_dev *dev)
{ … }

#define QEDR_MAX_UD_HEADER_SIZE …
#define QEDR_GSI_QPN …
static inline int qedr_gsi_build_header(struct qedr_dev *dev,
					struct qedr_qp *qp,
					const struct ib_send_wr *swr,
					struct ib_ud_header *udh,
					int *roce_mode)
{ … }

static inline int qedr_gsi_build_packet(struct qedr_dev *dev,
					struct qedr_qp *qp,
					const struct ib_send_wr *swr,
					struct qed_roce_ll2_packet **p_packet)
{ … }

int qedr_gsi_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
		       const struct ib_send_wr **bad_wr)
{ … }

int qedr_gsi_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
		       const struct ib_recv_wr **bad_wr)
{ … }

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