drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h

   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  */
  48 struct 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
  68 struct 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
  87 static const struct
  88 usnic_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
 112 const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state);
 113 int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz);
 114 int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz);
 115 struct usnic_ib_qp_grp *
 116 usnic_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);
 120 void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp);
 121 int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp,
 122                                 enum ib_qp_state new_state,
 123                                 void *data);
 124 struct 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);
 127 static inline
 128 struct 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_ */