[03/13] IB/core: add a helper to check for READ WITH INVALIDATE support

Commit Message

Christoph Hellwig Feb. 27, 2016, 6:10 p.m. UTC

Signed-off-by: Christoph Hellwig <[e-mail]>
---
 include/rdma/ib_verbs.h | 9 +++++++++
 1 file changed, 9 insertions(+)

Patch

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 2114929..267f11e 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2286,6 +2286,15 @@  static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
 		device->add_gid && device->del_gid;
 }
 
+/*
+ * Check if the device supports READ W/ INVALIDATE.
+ */
+static inline bool rdma_has_read_invalidate(struct ib_device *dev, u32 port_num)
+{
+	/* iWarp requires READ W/ INVALIDATE.  No other device supports it yet */
+	return rdma_protocol_iwarp(dev, port_num);
+}
+
 int ib_query_gid(struct ib_device *device,
 		 u8 port_num, int index, union ib_gid *gid,
 		 struct ib_gid_attr *attr);