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authorSelvin Xavier <selvin.xavier@broadcom.com>2020-02-19 02:19:53 -0800
committerJason Gunthorpe <jgg@mellanox.com>2020-02-19 16:54:25 -0400
commit779820c2e1e9251ddfdce5dd43b0bba30cd22271 (patch)
tree00975b84f8b73b2c6150ba56724f12d2bc37b4f5 /drivers/infiniband/core/cache.c
parent167b95ec887029c5fe0fb0f601fb209323f498fb (diff)
RDMA/core: Add helper function to retrieve driver gid context from gid attr
Adding a helper function to retrieve the driver gid context from the gid attr. Link: https://lore.kernel.org/r/1582107594-5180-2-git-send-email-selvin.xavier@broadcom.com Suggested-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/cache.c')
-rw-r--r--drivers/infiniband/core/cache.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index 17bfedd24cc3..9bbdace3c809 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -973,6 +973,23 @@ done:
EXPORT_SYMBOL(rdma_query_gid);
/**
+ * rdma_read_gid_hw_context - Read the HW GID context from GID attribute
+ * @attr: Potinter to the GID attribute
+ *
+ * rdma_read_gid_hw_context() reads the drivers GID HW context corresponding
+ * to the SGID attr. Callers are required to already be holding the reference
+ * to an existing GID entry.
+ *
+ * Returns the HW GID context
+ *
+ */
+void *rdma_read_gid_hw_context(const struct ib_gid_attr *attr)
+{
+ return container_of(attr, struct ib_gid_table_entry, attr)->context;
+}
+EXPORT_SYMBOL(rdma_read_gid_hw_context);
+
+/**
* rdma_find_gid - Returns SGID attributes if the matching GID is found.
* @device: The device to query.
* @gid: The GID value to search for.