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authorIra Weiny <ira.weiny@intel.com>2015-06-06 14:38:32 -0400
committerDoug Ledford <dledford@redhat.com>2015-06-12 14:49:17 -0400
commit65995fee842fd9f1427b62be24053846d9c32102 (patch)
tree13fa6c4fc58ecfc9d6850017a51e4892f413fa96 /include
parent4cd7c9479aff33746af490fa4a5a7dee8654891a (diff)
downloadop-kernel-dev-65995fee842fd9f1427b62be24053846d9c32102.zip
op-kernel-dev-65995fee842fd9f1427b62be24053846d9c32102.tar.gz
IB/core: Add OPA MAD core capability flag
Add OPA MAD support flags to the core capability immutable flags. In addition add the rdma_cap_opa_mad helper function for core functions to use to detect OPA MAD support. OPA MADs share a common header with IBTA MADs but with some differences for increased performance. 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. OPA MADs differ in the following ways: 1) MADs are variable size up to 2K IBTA defined MADs remain fixed at 256 bytes 2) OPA SMPs must carry valid PKeys 3) OPA SMP packets are a different format The MAD stack will use this new functionality to determine if OPA MAD processing should occur on individual device ports. Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/rdma/ib_verbs.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 46c8eb8..986fddb 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -374,6 +374,7 @@ 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
@@ -397,6 +398,8 @@ 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;
@@ -1886,6 +1889,31 @@ static inline bool rdma_cap_ib_mad(const 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.
+ *
+ * OPA MADs differ in the following ways:
+ *
+ * 1) MADs are variable size up to 2K
+ * IBTA defined MADs remain fixed at 256 bytes
+ * 2) OPA SMPs must carry valid PKeys
+ * 3) OPA SMP packets are a different format
+ *
+ * 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
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