Add EFA node type, transport type and protocol type to core code.
EFA relies on underlying implementation similar to reliable datagram, so
we also define a new QP type named Scalable Reliable Datagram (SRD).
EFA reliable datagram transport provides reliable out-of-order delivery,
transparently utilizing multiple network paths to reduce network tail
latency. Its interface is similar to UD, in particular it supports
message size up to MTU, with error handling extended to support reliable
communication.
Signed-off-by: Gal Pressman <galpress@xxxxxxxxxx>
---
drivers/infiniband/core/verbs.c | 2 ++
include/rdma/ib_verbs.h | 9 +++++++--
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 178899e3ce73..970744ffbf33 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -206,6 +206,8 @@ rdma_node_get_transport(enum rdma_node_type node_type)
return RDMA_TRANSPORT_USNIC_UDP;
if (node_type == RDMA_NODE_RNIC)
return RDMA_TRANSPORT_IWARP;
+ if (node_type == RDMA_NODE_EFA)
+ return RDMA_TRANSPORT_EFA;
return RDMA_TRANSPORT_IB;
}
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 92633c15125b..8d4b07b346b7 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -108,6 +108,7 @@ enum rdma_node_type {
RDMA_NODE_RNIC,
RDMA_NODE_USNIC,
RDMA_NODE_USNIC_UDP,
+ RDMA_NODE_EFA,
};
enum {
@@ -119,14 +120,16 @@ enum rdma_transport_type {
RDMA_TRANSPORT_IB,
RDMA_TRANSPORT_IWARP,
RDMA_TRANSPORT_USNIC,
- RDMA_TRANSPORT_USNIC_UDP
+ RDMA_TRANSPORT_USNIC_UDP,
+ RDMA_TRANSPORT_EFA,
};
enum rdma_protocol_type {
RDMA_PROTOCOL_IB,
RDMA_PROTOCOL_IBOE,
RDMA_PROTOCOL_IWARP,
- RDMA_PROTOCOL_USNIC_UDP
+ RDMA_PROTOCOL_USNIC_UDP,
+ RDMA_PROTOCOL_EFA,
};
__attribute_const__ enum rdma_transport_type
@@ -538,6 +541,7 @@ static inline struct rdma_hw_stats *rdma_alloc_hw_stats_struct(
#define RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP 0x00800000
#define RDMA_CORE_CAP_PROT_RAW_PACKET 0x01000000
#define RDMA_CORE_CAP_PROT_USNIC 0x02000000
+#define RDMA_CORE_CAP_PROT_EFA 0x04000000
#define RDMA_CORE_PORT_IB_GRH_REQUIRED (RDMA_CORE_CAP_IB_GRH_REQUIRED \
| RDMA_CORE_CAP_PROT_ROCE \
@@ -1095,6 +1099,7 @@ enum ib_qp_type {
IB_QPT_RAW_PACKET = 8,
IB_QPT_XRC_INI = 9,
IB_QPT_XRC_TGT,
+ IB_QPT_SRD,
IB_QPT_MAX,
IB_QPT_DRIVER = 0xFF,
/* Reserve a range for qp types internal to the low level driver.
--
2.7.4
