Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...

[cascardo/linux.git] / include / rdma / ib_verbs.h

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index fb2cef4..fc0320c 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -220,6 +220,7 @@ enum ib_device_cap_flags {
        IB_DEVICE_ON_DEMAND_PAGING              = (1 << 31),
        IB_DEVICE_SG_GAPS_REG                   = (1ULL << 32),
        IB_DEVICE_VIRTUAL_FUNCTION              = ((u64)1 << 33),
+       IB_DEVICE_RAW_SCATTER_FCS               = ((u64)1 << 34),
 };
 
 enum ib_signature_prot_cap {
@@ -931,6 +932,13 @@ struct ib_qp_cap {
        u32     max_send_sge;
        u32     max_recv_sge;
        u32     max_inline_data;
+
+       /*
+        * Maximum number of rdma_rw_ctx structures in flight at a time.
+        * ib_create_qp() will calculate the right amount of neededed WRs
+        * and MRs based on this.
+        */
+       u32     max_rdma_ctxs;
 };
 
 enum ib_sig_type {
@@ -981,6 +989,7 @@ enum ib_qp_create_flags {
        IB_QP_CREATE_NETIF_QP                   = 1 << 5,
        IB_QP_CREATE_SIGNATURE_EN               = 1 << 6,
        IB_QP_CREATE_USE_GFP_NOIO               = 1 << 7,
+       IB_QP_CREATE_SCATTER_FCS                = 1 << 8,
        /* reserve bits 26-31 for low level drivers' internal use */
        IB_QP_CREATE_RESERVED_START             = 1 << 26,
        IB_QP_CREATE_RESERVED_END               = 1 << 31,
@@ -1002,7 +1011,11 @@ struct ib_qp_init_attr {
        enum ib_sig_type        sq_sig_type;
        enum ib_qp_type         qp_type;
        enum ib_qp_create_flags create_flags;
-       u8                      port_num; /* special QP types only */
+
+       /*
+        * Only needed for special QP types, or when using the RW API.
+        */
+       u8                      port_num;
 };
 
 struct ib_qp_open_attr {
@@ -1421,9 +1434,14 @@ struct ib_qp {
        struct ib_pd           *pd;
        struct ib_cq           *send_cq;
        struct ib_cq           *recv_cq;
+       spinlock_t              mr_lock;
+       int                     mrs_used;
+       struct list_head        rdma_mrs;
+       struct list_head        sig_mrs;
        struct ib_srq          *srq;
        struct ib_xrcd         *xrcd; /* XRC TGT QPs only */
        struct list_head        xrcd_list;
+
        /* count times opened, mcast attaches, flow attaches */
        atomic_t                usecnt;
        struct list_head        open_list;
@@ -1438,12 +1456,16 @@ struct ib_qp {
 struct ib_mr {
        struct ib_device  *device;
        struct ib_pd      *pd;
-       struct ib_uobject *uobject;
        u32                lkey;
        u32                rkey;
        u64                iova;
        u32                length;
        unsigned int       page_size;
+       bool               need_inval;
+       union {
+               struct ib_uobject       *uobject;       /* user */
+               struct list_head        qp_entry;       /* FR */
+       };
 };
 
 struct ib_mw {
@@ -1827,7 +1849,8 @@ struct ib_device {
                                               u32 max_num_sg);
        int                        (*map_mr_sg)(struct ib_mr *mr,
                                                struct scatterlist *sg,
-                                               int sg_nents);
+                                               int sg_nents,
+                                               unsigned int *sg_offset);
        struct ib_mw *             (*alloc_mw)(struct ib_pd *pd,
                                               enum ib_mw_type type,
                                               struct ib_udata *udata);
@@ -2317,6 +2340,18 @@ static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
                device->add_gid && device->del_gid;
 }
 
+/*
+ * Check if the device supports READ W/ INVALIDATE.
+ */
+static inline bool rdma_cap_read_inv(struct ib_device *dev, u32 port_num)
+{
+       /*
+        * iWarp drivers must support READ W/ INVALIDATE.  No other protocol
+        * has support for it yet.
+        */
+       return rdma_protocol_iwarp(dev, port_num);
+}
+
 int ib_query_gid(struct ib_device *device,
                 u8 port_num, int index, union ib_gid *gid,
                 struct ib_gid_attr *attr);
@@ -3111,29 +3146,23 @@ struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
                                            u16 pkey, const union ib_gid *gid,
                                            const struct sockaddr *addr);
 
-int ib_map_mr_sg(struct ib_mr *mr,
-                struct scatterlist *sg,
-                int sg_nents,
-                unsigned int page_size);
+int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
+                unsigned int *sg_offset, unsigned int page_size);
 
 static inline int
-ib_map_mr_sg_zbva(struct ib_mr *mr,
-                 struct scatterlist *sg,
-                 int sg_nents,
-                 unsigned int page_size)
+ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
+                 unsigned int *sg_offset, unsigned int page_size)
 {
        int n;
 
-       n = ib_map_mr_sg(mr, sg, sg_nents, page_size);
+       n = ib_map_mr_sg(mr, sg, sg_nents, sg_offset, page_size);
        mr->iova = 0;
 
        return n;
 }
 
-int ib_sg_to_pages(struct ib_mr *mr,
-                  struct scatterlist *sgl,
-                  int sg_nents,
-                  int (*set_page)(struct ib_mr *, u64));
+int ib_sg_to_pages(struct ib_mr *mr, struct scatterlist *sgl, int sg_nents,
+               unsigned int *sg_offset, int (*set_page)(struct ib_mr *, u64));
 
 void ib_drain_rq(struct ib_qp *qp);
 void ib_drain_sq(struct ib_qp *qp);