[PATCH 3/9] IB/core: add a helper to check for READ WITH INVALIDATE support

Christoph Hellwig
2016-02-29T22:20:04Z

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
include/rdma/ib_verbs.h | 9 +++++++++
1 file changed, 9 insertions(+)

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);
--
2.1.4