From: Ira Weiny <ira.weiny@xxxxxxxxx>
OPA MADs share a common header with IBTA MADs but with a different base version
and an extended length. These MADs increase the performance of management
traffic on OPA devices.
Sharing a common header with IBTA MADs allows us to share most of the MAD
processing code when dealing with OPA MADs in addition to supporting some IBTA
MADs on OPA devices.
This patch adds the Core Capability flag for OPA MADs as well as a helper
function for testing that flag both of which are used in future patches.
Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
---
include/rdma/ib_verbs.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 7b1dcb380987..6d729651901c 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -362,6 +362,7 @@ union rdma_protocol_stats {
#define RDMA_CORE_CAP_IB_CM 0x00000004
#define RDMA_CORE_CAP_IW_CM 0x00000008
#define RDMA_CORE_CAP_IB_SA 0x00000010
+#define RDMA_CORE_CAP_OPA_MAD 0x00000020
/* Address format 0x000FF000 */
#define RDMA_CORE_CAP_AF_IB 0x00001000
@@ -386,6 +387,8 @@ union rdma_protocol_stats {
| RDMA_CORE_CAP_ETH_AH)
#define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
| RDMA_CORE_CAP_IW_CM)
+#define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
+ | RDMA_CORE_CAP_OPA_MAD)
struct ib_port_attr {
enum ib_port_state state;
@@ -1873,6 +1876,24 @@ static inline bool rdma_cap_ib_mad(struct ib_device *device, u8 port_num)
}
/**
+ * rdma_cap_opa_mad - Check if the port of device provides support for OPA
+ * Management Datagrams.
+ * @device: Device to check
+ * @port_num: Port number to check
+ *
+ * Intel OmniPath devices extend and/or replace the InfiniBand Management
+ * datagrams with their own versions. These OPA MADs share many but not all of
+ * the characteristics of InfiniBand MADs.
+ *
+ * Return: true if the port supports OPA MAD packet formats.
+ */
+static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
+{
+ return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
+ == RDMA_CORE_CAP_OPA_MAD;
+}
+
+/**
* rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
* Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
* @device: Device to check
--
1.8.2
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
