IB/core: Guarantee that a local_dma_lkey is available
Every single ULP requires a local_dma_lkey to do anything with
a QP, so let us ensure one exists for every PD created.
If the driver can supply a global local_dma_lkey then use that, otherwise
ask the driver to create a local use all physical memory MR associated
with the new PD.
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Sagi Grimberg <sagig@dev.mellanox.co.il>
Acked-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Tested-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 5eff55c..0940051 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1257,9 +1257,11 @@
};
struct ib_pd {
+ u32 local_dma_lkey;
struct ib_device *device;
struct ib_uobject *uobject;
atomic_t usecnt; /* count all resources */
+ struct ib_mr *local_mr;
};
struct ib_xrcd {
@@ -2192,13 +2194,6 @@
int ib_find_pkey(struct ib_device *device,
u8 port_num, u16 pkey, u16 *index);
-/**
- * ib_alloc_pd - Allocates an unused protection domain.
- * @device: The device on which to allocate the protection domain.
- *
- * A protection domain object provides an association between QPs, shared
- * receive queues, address handles, memory regions, and memory windows.
- */
struct ib_pd *ib_alloc_pd(struct ib_device *device);
/**