1 files changed, 104 insertions, 2 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 228be3e220d9..bf5daafe8ecc 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -112,6 +112,7 @@ enum ib_device_cap_flags {
          */
         IB_DEVICE_UD_IP_CSUM            = (1<<18),
         IB_DEVICE_UD_TSO                = (1<<19),
+        IB_DEVICE_XRC                   = (1<<20),
         IB_DEVICE_MEM_MGT_EXTENSIONS    = (1<<21),
         IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22),
 };
@@ -207,6 +208,7 @@ enum ib_port_cap_flags {
         IB_PORT_SM_DISABLED                     = 1 << 10,
         IB_PORT_SYS_IMAGE_GUID_SUP              = 1 << 11,
         IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP       = 1 << 12,
+        IB_PORT_EXTENDED_SPEEDS_SUP             = 1 << 14,
         IB_PORT_CM_SUP                          = 1 << 16,
         IB_PORT_SNMP_TUNNEL_SUP                 = 1 << 17,
         IB_PORT_REINIT_SUP                      = 1 << 18,
@@ -415,7 +417,15 @@ enum ib_rate {
         IB_RATE_40_GBPS  = 7,
         IB_RATE_60_GBPS  = 8,
         IB_RATE_80_GBPS  = 9,
-        IB_RATE_120_GBPS = 10
+        IB_RATE_120_GBPS = 10,
+        IB_RATE_14_GBPS  = 11,
+        IB_RATE_56_GBPS  = 12,
+        IB_RATE_112_GBPS = 13,
+        IB_RATE_168_GBPS = 14,
+        IB_RATE_25_GBPS  = 15,
+        IB_RATE_100_GBPS = 16,
+        IB_RATE_200_GBPS = 17,
+        IB_RATE_300_GBPS = 18
 };
 
 /**
@@ -427,6 +437,13 @@ enum ib_rate {
 int ib_rate_to_mult(enum ib_rate rate) __attribute_const__;
 
 /**
+ * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
+ * For example, IB_RATE_2_5_GBPS will be converted to 2500.
+ * @rate: rate to convert.
+ */
+int ib_rate_to_mbps(enum ib_rate rate) __attribute_const__;
+
+/**
  * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
  * enum.
  * @mult: multiple to convert.
@@ -522,6 +539,11 @@ enum ib_cq_notify_flags {
         IB_CQ_REPORT_MISSED_EVENTS      = 1 << 2,
 };
 
+enum ib_srq_type {
+        IB_SRQT_BASIC,
+        IB_SRQT_XRC
+};
+
 enum ib_srq_attr_mask {
         IB_SRQ_MAX_WR   = 1 << 0,
         IB_SRQ_LIMIT    = 1 << 1,
@@ -537,6 +559,14 @@ struct ib_srq_init_attr {
         void                  (*event_handler)(struct ib_event *, void *);
         void                   *srq_context;
         struct ib_srq_attr      attr;
+        enum ib_srq_type        srq_type;
+
+        union {
+                struct {
+                        struct ib_xrcd *xrcd;
+                        struct ib_cq   *cq;
+                } xrc;
+        } ext;
 };
 
 struct ib_qp_cap {
@@ -565,7 +595,11 @@ enum ib_qp_type {
         IB_QPT_UC,
         IB_QPT_UD,
         IB_QPT_RAW_IPV6,
-        IB_QPT_RAW_ETHERTYPE
+        IB_QPT_RAW_ETHERTYPE,
+        /* Save 8 for RAW_PACKET */
+        IB_QPT_XRC_INI = 9,
+        IB_QPT_XRC_TGT,
+        IB_QPT_MAX
 };
 
 enum ib_qp_create_flags {
@@ -579,6 +613,7 @@ struct ib_qp_init_attr {
         struct ib_cq           *send_cq;
         struct ib_cq           *recv_cq;
         struct ib_srq          *srq;
+        struct ib_xrcd         *xrcd;     /* XRC TGT QPs only */
         struct ib_qp_cap        cap;
         enum ib_sig_type        sq_sig_type;
         enum ib_qp_type         qp_type;
@@ -586,6 +621,13 @@ struct ib_qp_init_attr {
         u8                      port_num; /* special QP types only */
 };
 
+struct ib_qp_open_attr {
+        void                  (*event_handler)(struct ib_event *, void *);
+        void                   *qp_context;
+        u32                     qp_num;
+        enum ib_qp_type         qp_type;
+};
+
 enum ib_rnr_timeout {
         IB_RNR_TIMER_655_36 =  0,
         IB_RNR_TIMER_000_01 =  1,
@@ -770,6 +812,7 @@ struct ib_send_wr {
                         u32                             rkey;
                 } fast_reg;
         } wr;
+        u32                     xrc_remote_srq_num;     /* XRC TGT QPs only */
 };
 
 struct ib_recv_wr {
@@ -831,6 +874,7 @@ struct ib_ucontext {
         struct list_head        qp_list;
         struct list_head        srq_list;
         struct list_head        ah_list;
+        struct list_head        xrcd_list;
         int                     closing;
 };
 
@@ -858,6 +902,15 @@ struct ib_pd {
         atomic_t                usecnt; /* count all resources */
 };
 
+struct ib_xrcd {
+        struct ib_device       *device;
+        atomic_t                usecnt; /* count all exposed resources */
+        struct inode           *inode;
+
+        struct mutex            tgt_qp_mutex;
+        struct list_head        tgt_qp_list;
+};
+
 struct ib_ah {
         struct ib_device        *device;
         struct ib_pd            *pd;
@@ -882,7 +935,16 @@ struct ib_srq {
         struct ib_uobject      *uobject;
         void                  (*event_handler)(struct ib_event *, void *);
         void                   *srq_context;
+        enum ib_srq_type        srq_type;
         atomic_t                usecnt;
+
+        union {
+                struct {
+                        struct ib_xrcd *xrcd;
+                        struct ib_cq   *cq;
+                        u32             srq_num;
+                } xrc;
+        } ext;
 };
 
 struct ib_qp {
@@ -891,6 +953,11 @@ struct ib_qp {
         struct ib_cq           *send_cq;
         struct ib_cq           *recv_cq;
         struct ib_srq          *srq;
+        struct ib_xrcd         *xrcd; /* XRC TGT QPs only */
+        struct list_head        xrcd_list;
+        atomic_t                usecnt; /* count times opened */
+        struct list_head        open_list;
+        struct ib_qp           *real_qp;
         struct ib_uobject      *uobject;
         void                  (*event_handler)(struct ib_event *, void *);
         void                   *qp_context;
@@ -1149,6 +1216,10 @@ struct ib_device {
                                                   struct ib_grh *in_grh,
                                                   struct ib_mad *in_mad,
                                                   struct ib_mad *out_mad);
+        struct ib_xrcd *           (*alloc_xrcd)(struct ib_device *device,
+                                                 struct ib_ucontext *ucontext,
+                                                 struct ib_udata *udata);
+        int                        (*dealloc_xrcd)(struct ib_xrcd *xrcd);
 
         struct ib_dma_mapping_ops   *dma_ops;
 
@@ -1443,6 +1514,25 @@ int ib_query_qp(struct ib_qp *qp,
 int ib_destroy_qp(struct ib_qp *qp);
 
 /**
+ * ib_open_qp - Obtain a reference to an existing sharable QP.
+ * @xrcd - XRC domain
+ * @qp_open_attr: Attributes identifying the QP to open.
+ *
+ * Returns a reference to a sharable QP.
+ */
+struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
+                         struct ib_qp_open_attr *qp_open_attr);
+
+/**
+ * ib_close_qp - Release an external reference to a QP.
+ * @qp: The QP handle to release
+ *
+ * The opened QP handle is released by the caller.  The underlying
+ * shared QP is not destroyed until all internal references are released.
+ */
+int ib_close_qp(struct ib_qp *qp);
+
+/**
  * ib_post_send - Posts a list of work requests to the send queue of
  *   the specified QP.
  * @qp: The QP to post the work request on.
@@ -2060,4 +2150,16 @@ int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
  */
 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
 
+/**
+ * ib_alloc_xrcd - Allocates an XRC domain.
+ * @device: The device on which to allocate the XRC domain.
+ */
+struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
+
+/**
+ * ib_dealloc_xrcd - Deallocates an XRC domain.
+ * @xrcd: The XRC domain to deallocate.
+ */
+int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
+
 #endif /* IB_VERBS_H */