[PATCH v5 3/9] IB/core: add a helper to check for READ WITH INVALIDATE support

Christoph Hellwig
2016-03-11T18:53:13Z

Reviewed-by: Steve Wise <swise@opengridcomputing.com>
---
include/rdma/ib_verbs.h | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 1e21fb8..cdb9159 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -2293,6 +2293,18 @@ 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_cap_read_inv(struct ib_device *dev, u32 port_num)
+{
+ /*
+ * iWarp drivers must support READ W/ INVALIDATE. No other protocol
+ * has support for 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