> include/rdma/rdma_vt.h | 53
> ++++++++++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 53 insertions(+), 0 deletions(-)
>
> diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h
> index 5112dd7..39a0737 100644
> --- a/include/rdma/rdma_vt.h
> +++ b/include/rdma/rdma_vt.h
> @@ -59,6 +59,56 @@
> #include "ib_verbs.h"
>
> /*
> + * For Memory Regions. This stuff should probably be moved into
> rdmavt/mr.h once
> + * drivers no longer need access to the MR directly.
> + */
> +
> +/*
> + * A segment is a linear region of low physical memory.
> + * Used by the verbs layer.
> + */
> +struct rvt_seg {
> + void *vaddr;
> + size_t length;
> +};
> +
> +/* The number of rvt_segs that fit in a page. */
> +#define RVT_SEGSZ (PAGE_SIZE / sizeof(struct rvt_seg))
> +
> +struct rvt_segarray {
> + struct rvt_seg segs[RVT_SEGSZ];
> +};
> +
> +struct rvt_mregion {
> + struct ib_pd *pd; /* shares refcnt of ibmr.pd */
> + u64 user_base; /* User's address for this region */
> + u64 iova; /* IB start address of this region */
> + size_t length;
> + u32 lkey;
> + u32 offset; /* offset (bytes) to start of region */
> + int access_flags;
> + u32 max_segs; /* number of rvt_segs in all the arrays */
> + u32 mapsz; /* size of the map array */
> + u8 page_shift; /* 0 - non unform/non powerof2 sizes */
> + u8 lkey_published; /* in global table */
Without looking ahead in the patch series, won't the access_flags indicate this?
> + struct completion comp; /* complete when refcount goes to zero */
> + atomic_t refcount;
> + struct rvt_segarray *map[0]; /* the segments */
> +};
> +
> +#define RVT_MAX_LKEY_TABLE_BITS 23
> +
> +struct rvt_lkey_table {
> + spinlock_t lock; /* protect changes in this struct */
> + u32 next; /* next unused index (speeds search) */
> + u32 gen; /* generation count */
> + u32 max; /* size of the table */
> + struct rvt_mregion __rcu **table;
> +};
> +
> +/* End Memmory Region */
> +
> +/*
> * Things that are driver specific, module parameters in hfi1 and qib
> */
> struct rvt_driver_params {
> @@ -125,6 +175,9 @@ struct rvt_dev_info {
> /* Driver specific properties */
> struct rvt_driver_params dparms;
>
> + struct rvt_mregion __rcu *dma_mr;
> + struct rvt_lkey_table lk_table;
Go crazy here and add the 'ey' into the field name.
