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-rw-r--r--drivers/infiniband/core/device.c1
-rw-r--r--drivers/infiniband/core/verbs.c40
-rw-r--r--include/rdma/ib_verbs.h9
3 files changed, 49 insertions, 1 deletions
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index dba385410715..669c2d58e695 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -2497,6 +2497,7 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
SET_DEVICE_OP(dev_ops, iw_reject);
SET_DEVICE_OP(dev_ops, iw_rem_ref);
SET_DEVICE_OP(dev_ops, map_mr_sg);
+ SET_DEVICE_OP(dev_ops, map_mr_sg_pi);
SET_DEVICE_OP(dev_ops, map_phys_fmr);
SET_DEVICE_OP(dev_ops, mmap);
SET_DEVICE_OP(dev_ops, modify_ah);
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 82d62bc7af65..c892022aa8ea 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -2049,7 +2049,8 @@ struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd,
{
struct ib_mr *mr;
- if (!pd->device->ops.alloc_mr_integrity)
+ if (!pd->device->ops.alloc_mr_integrity ||
+ !pd->device->ops.map_mr_sg_pi)
return ERR_PTR(-EOPNOTSUPP);
if (!max_num_meta_sg)
@@ -2431,6 +2432,43 @@ int ib_set_vf_guid(struct ib_device *device, int vf, u8 port, u64 guid,
EXPORT_SYMBOL(ib_set_vf_guid);
/**
+ * ib_map_mr_sg_pi() - Map the dma mapped SG lists for PI (protection
+ * information) and set an appropriate memory region for registration.
+ * @mr: memory region
+ * @data_sg: dma mapped scatterlist for data
+ * @data_sg_nents: number of entries in data_sg
+ * @data_sg_offset: offset in bytes into data_sg
+ * @meta_sg: dma mapped scatterlist for metadata
+ * @meta_sg_nents: number of entries in meta_sg
+ * @meta_sg_offset: offset in bytes into meta_sg
+ * @page_size: page vector desired page size
+ *
+ * Constraints:
+ * - The MR must be allocated with type IB_MR_TYPE_INTEGRITY.
+ *
+ * Return: 0 on success.
+ *
+ * After this completes successfully, the memory region
+ * is ready for registration.
+ */
+int ib_map_mr_sg_pi(struct ib_mr *mr, struct scatterlist *data_sg,
+ int data_sg_nents, unsigned int *data_sg_offset,
+ struct scatterlist *meta_sg, int meta_sg_nents,
+ unsigned int *meta_sg_offset, unsigned int page_size)
+{
+ if (unlikely(!mr->device->ops.map_mr_sg_pi ||
+ WARN_ON_ONCE(mr->type != IB_MR_TYPE_INTEGRITY)))
+ return -EOPNOTSUPP;
+
+ mr->page_size = page_size;
+
+ return mr->device->ops.map_mr_sg_pi(mr, data_sg, data_sg_nents,
+ data_sg_offset, meta_sg,
+ meta_sg_nents, meta_sg_offset);
+}
+EXPORT_SYMBOL(ib_map_mr_sg_pi);
+
+/**
* ib_map_mr_sg() - Map the largest prefix of a dma mapped SG list
* and set it the memory region.
* @mr: memory region
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 01bc04c8e220..632e133e7a59 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2437,6 +2437,11 @@ struct ib_device_ops {
int (*read_counters)(struct ib_counters *counters,
struct ib_counters_read_attr *counters_read_attr,
struct uverbs_attr_bundle *attrs);
+ int (*map_mr_sg_pi)(struct ib_mr *mr, struct scatterlist *data_sg,
+ int data_sg_nents, unsigned int *data_sg_offset,
+ struct scatterlist *meta_sg, int meta_sg_nents,
+ unsigned int *meta_sg_offset);
+
/**
* alloc_hw_stats - Allocate a struct rdma_hw_stats and fill in the
* driver initialized data. The struct is kfree()'ed by the sysfs
@@ -4236,6 +4241,10 @@ int ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
int ib_map_mr_sg(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,
unsigned int *sg_offset, unsigned int page_size);
+int ib_map_mr_sg_pi(struct ib_mr *mr, struct scatterlist *data_sg,
+ int data_sg_nents, unsigned int *data_sg_offset,
+ struct scatterlist *meta_sg, int meta_sg_nents,
+ unsigned int *meta_sg_offset, unsigned int page_size);
static inline int
ib_map_mr_sg_zbva(struct ib_mr *mr, struct scatterlist *sg, int sg_nents,