[PATCH 09/37] IB/rdmavt: Add query gid stub

[Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

The handler for query gid operates along the same lines as the query pkey
handler. The driver will take care to keep the guid table updated.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Reviewed-by: Ira Weiny <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 drivers/infiniband/sw/rdmavt/vt.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c
index 823c877..c4d7f76 100644
--- a/drivers/infiniband/sw/rdmavt/vt.c
+++ b/drivers/infiniband/sw/rdmavt/vt.c
@@ -163,6 +163,27 @@ static int rvt_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 	return 0;
 }
 
+/**
+ * rvt_query_gid - Return a gid from the table
+ * @ibdev: Verbs IB dev
+ * @port: Port number
+ * @index: = Index in table
+ * @gid: Gid to return
+ *
+ * Returns 0 on success
+ */
+static int rvt_query_gid(struct ib_device *ibdev, u8 port,
+			 int index, union ib_gid *gid)
+{
+	/*
+	 * Driver is responsible for updating the guid table. Which will be used
+	 * to craft the return value. This will work similar to how query_pkey()
+	 * is being done.
+	 */
+
+	return -EINVAL;
+}
+
 /*
  * Check driver override. If driver passes a value use it, otherwise we use our
  * own value.
@@ -181,6 +202,7 @@ int rvt_register_device(struct rvt_dev_info *rdi)
 	CDR(rdi, query_port);
 	CDR(rdi, modify_port);
 	CDR(rdi, query_pkey);
+	CDR(rdi, query_gid);
 
 	/* DMA Operations */
 	rdi->ibdev.dma_ops =

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