drivers/infiniband/hw/usnic/usnic_ib_qp_grp.h

   1 /*
   2  * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
   3  *
   4  * This program is free software; you may redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15  * SOFTWARE.
  16  *
  17  */
  18
  19 #ifndef USNIC_IB_QP_GRP_H_
  20 #define USNIC_IB_QP_GRP_H_
  21
  22 #include <linux/debugfs.h>
  23 #include <rdma/ib_verbs.h>
  24
  25 #include "usnic_ib.h"
  26 #include "usnic_abi.h"
  27 #include "usnic_fwd.h"
  28 #include "usnic_vnic.h"
  29
  30 /*
  31  * The qp group struct represents all the hw resources needed to present a ib_qp
  32  */
  33 struct usnic_ib_qp_grp {
  34         struct ib_qp                            ibqp;
  35         enum ib_qp_state                        state;
  36         int                                     grp_id;
  37
  38         struct usnic_fwd_dev                    *ufdev;
  39         struct usnic_ib_ucontext                *ctx;
  40         struct list_head                        flows_lst;
  41
  42         struct usnic_vnic_res_chunk             **res_chunk_list;
  43
  44         pid_t                                   owner_pid;
  45         struct usnic_ib_vf                      *vf;
  46         struct list_head                        link;
  47
  48         spinlock_t                              lock;
  49
  50         struct kobject                          kobj;
  51 };
  52
  53 struct usnic_ib_qp_grp_flow {
  54         struct usnic_fwd_flow           *flow;
  55         enum usnic_transport_type       trans_type;
  56         union {
  57                 struct {
  58                         uint16_t        port_num;
  59                 } usnic_roce;
  60                 struct {
  61                         struct socket   *sock;
  62                 } udp;
  63         };
  64         struct usnic_ib_qp_grp          *qp_grp;
  65         struct list_head                link;
  66
  67         /* Debug FS */
  68         struct dentry                   *dbgfs_dentry;
  69         char                            dentry_name[32];
  70 };
  71
  72 static const struct
  73 usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = {
  74         { /*USNIC_TRANSPORT_UNKNOWN*/
  75                 .resources = {
  76                         {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
  77                 },
  78         },
  79         { /*USNIC_TRANSPORT_ROCE_CUSTOM*/
  80                 .resources = {
  81                         {.type = USNIC_VNIC_RES_TYPE_WQ,        .cnt = 1,},
  82                         {.type = USNIC_VNIC_RES_TYPE_RQ,        .cnt = 1,},
  83                         {.type = USNIC_VNIC_RES_TYPE_CQ,        .cnt = 1,},
  84                         {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
  85                 },
  86         },
  87         { /*USNIC_TRANSPORT_IPV4_UDP*/
  88                 .resources = {
  89                         {.type = USNIC_VNIC_RES_TYPE_WQ,        .cnt = 1,},
  90                         {.type = USNIC_VNIC_RES_TYPE_RQ,        .cnt = 1,},
  91                         {.type = USNIC_VNIC_RES_TYPE_CQ,        .cnt = 1,},
  92                         {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
  93                 },
  94         },
  95 };
  96
  97 const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state);
  98 int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz);
  99 int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz);
 100 struct usnic_ib_qp_grp *
 101 usnic_ib_qp_grp_create(struct usnic_fwd_dev *ufdev, struct usnic_ib_vf *vf,
 102                         struct usnic_ib_pd *pd,
 103                         struct usnic_vnic_res_spec *res_spec,
 104                         struct usnic_transport_spec *trans_spec);
 105 void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp);
 106 int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp,
 107                                 enum ib_qp_state new_state,
 108                                 void *data);
 109 struct usnic_vnic_res_chunk
 110 *usnic_ib_qp_grp_get_chunk(struct usnic_ib_qp_grp *qp_grp,
 111                                 enum usnic_vnic_res_type type);
 112 static inline
 113 struct usnic_ib_qp_grp *to_uqp_grp(struct ib_qp *ibqp)
 114 {
 115         return container_of(ibqp, struct usnic_ib_qp_grp, ibqp);
 116 }
 117 #endif /* USNIC_IB_QP_GRP_H_ */