drivers/infiniband/hw/qedr/qedr_roce_cm.h

   1 /* QLogic qedr NIC Driver
   2  * Copyright (c) 2015-2016  QLogic Corporation
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and /or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32 #ifndef LINUX_QEDR_CM_H_
  33 #define LINUX_QEDR_CM_H_
  34
  35 #define QEDR_GSI_MAX_RECV_WR    (4096)
  36 #define QEDR_GSI_MAX_SEND_WR    (4096)
  37
  38 #define QEDR_GSI_MAX_RECV_SGE   (1)     /* LL2 FW limitation */
  39
  40 #define QEDR_ROCE_V2_UDP_SPORT  (0000)
  41
  42 static inline u32 qedr_get_ipv4_from_gid(const u8 *gid)
  43 {
  44         return *(u32 *)(void *)&gid[12];
  45 }
  46
  47 /* RDMA CM */
  48 int qedr_gsi_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
  49 int qedr_gsi_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
  50                        const struct ib_recv_wr **bad_wr);
  51 int qedr_gsi_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
  52                        const struct ib_send_wr **bad_wr);
  53 struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev,
  54                                  struct ib_qp_init_attr *attrs,
  55                                  struct qedr_qp *qp);
  56 void qedr_store_gsi_qp_cq(struct qedr_dev *dev,
  57                           struct qedr_qp *qp, struct ib_qp_init_attr *attrs);
  58 int qedr_destroy_gsi_qp(struct qedr_dev *dev);
  59 void qedr_inc_sw_gsi_cons(struct qedr_qp_hwq_info *info);
  60 #endif