LXR linux/drivers/infiniband/hw/usnic/usnic_ib_qp

   1/*
   2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
   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 * 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 */
  33
  34#ifndef USNIC_IB_QP_GRP_H_
  35#define USNIC_IB_QP_GRP_H_
  36
  37#include <linux/debugfs.h>
  38#include <rdma/ib_verbs.h>
  39
  40#include "usnic_ib.h"
  41#include "usnic_abi.h"
  42#include "usnic_fwd.h"
  43#include "usnic_vnic.h"
  44
  45/*
  46 * The qp group struct represents all the hw resources needed to present a ib_qp
  47 */
  48struct usnic_ib_qp_grp {
  49        struct ib_qp                            ibqp;
  50        enum ib_qp_state                        state;
  51        int                                     grp_id;
  52
  53        struct usnic_fwd_dev                    *ufdev;
  54        struct usnic_ib_ucontext                *ctx;
  55        struct list_head                        flows_lst;
  56
  57        struct usnic_vnic_res_chunk             **res_chunk_list;
  58
  59        pid_t                                   owner_pid;
  60        struct usnic_ib_vf                      *vf;
  61        struct list_head                        link;
  62
  63        spinlock_t                              lock;
  64
  65        struct kobject                          kobj;
  66};
  67
  68struct usnic_ib_qp_grp_flow {
  69        struct usnic_fwd_flow           *flow;
  70        enum usnic_transport_type       trans_type;
  71        union {
  72                struct {
  73                        uint16_t        port_num;
  74                } usnic_roce;
  75                struct {
  76                        struct socket   *sock;
  77                } udp;
  78        };
  79        struct usnic_ib_qp_grp          *qp_grp;
  80        struct list_head                link;
  81
  82        /* Debug FS */
  83        struct dentry                   *dbgfs_dentry;
  84        char                            dentry_name[32];
  85};
  86
  87static const struct
  88usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = {
  89        { /*USNIC_TRANSPORT_UNKNOWN*/
  90                .resources = {
  91                        {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
  92                },
  93        },
  94        { /*USNIC_TRANSPORT_ROCE_CUSTOM*/
  95                .resources = {
  96                        {.type = USNIC_VNIC_RES_TYPE_WQ,        .cnt = 1,},
  97                        {.type = USNIC_VNIC_RES_TYPE_RQ,        .cnt = 1,},
  98                        {.type = USNIC_VNIC_RES_TYPE_CQ,        .cnt = 1,},
  99                        {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
 100                },
 101        },
 102        { /*USNIC_TRANSPORT_IPV4_UDP*/
 103                .resources = {
 104                        {.type = USNIC_VNIC_RES_TYPE_WQ,        .cnt = 1,},
 105                        {.type = USNIC_VNIC_RES_TYPE_RQ,        .cnt = 1,},
 106                        {.type = USNIC_VNIC_RES_TYPE_CQ,        .cnt = 1,},
 107                        {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
 108                },
 109        },
 110};
 111
 112const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state);
 113int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz);
 114int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz);
 115struct usnic_ib_qp_grp *
 116usnic_ib_qp_grp_create(struct usnic_fwd_dev *ufdev, struct usnic_ib_vf *vf,
 117                        struct usnic_ib_pd *pd,
 118                        struct usnic_vnic_res_spec *res_spec,
 119                        struct usnic_transport_spec *trans_spec);
 120void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp);
 121int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp,
 122                                enum ib_qp_state new_state,
 123                                void *data);
 124struct usnic_vnic_res_chunk
 125*usnic_ib_qp_grp_get_chunk(struct usnic_ib_qp_grp *qp_grp,
 126                                enum usnic_vnic_res_type type);
 127static inline
 128struct usnic_ib_qp_grp *to_uqp_grp(struct ib_qp *ibqp)
 129{
 130        return container_of(ibqp, struct usnic_ib_qp_grp, ibqp);
 131}
 132#endif /* USNIC_IB_QP_GRP_H_ */
 133