Add RDMA ibverb driver plugin

RDMA ibverb is a userspace API to efficiently rx/tx packets. This is an
initial, unoptimized driver targeting Mellanox cards.
Next steps should include batching, multiqueue and additional cards.

Change-Id: I0309c7a543f75f2f9317eaf63ca502ac7a093ef9
Signed-off-by: Benoît Ganne <bganne@cisco.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/src/plugins/rdma/CMakeLists.txt b/src/plugins/rdma/CMakeLists.txt
new file mode 100644
index 00000000000..35d43db28a1
--- /dev/null
+++ b/src/plugins/rdma/CMakeLists.txt
@@ -0,0 +1,61 @@
+# Copyright (c) 2018 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+message(STATUS "RDMA plugins - looking for ibverbs")
+
+find_path(IBVERBS_INCLUDE_DIR NAMES infiniband/verbs.h)
+find_library(IBVERBS_LIB NAMES libibverbs.a)
+find_library(MLX5_LIB NAMES libmlx5.a)
+
+if (NOT IBVERBS_LIB OR NOT MLX5_LIB)
+  message(WARNING "RDMA plugins - ibverbs not found - rdma_plugin disabled")
+  return()
+endif()
+
+if (MLX5_LIB)
+  string_append(RDMA_LINK_FLAGS "-Wl,--whole-archive,${MLX5_LIB},--no-whole-archive")
+endif()
+
+set(CMAKE_REQUIRED_FLAGS "-fPIC -shared ${IBVERBS_LIB} ${RDMA_LINK_FLAGS}")
+CHECK_C_SOURCE_COMPILES("" IBVERBS_COMPILES_CHECK)
+
+if (NOT IBVERBS_COMPILES_CHECK)
+  message(WARNING "RDMA plugins - no working ibverbs found - rdma_plugin disabled")
+  return()
+endif()
+
+message(STATUS "RDMA plugins - found ${IBVERBS_INCLUDE_DIR}")
+message(STATUS "RDMA plugins - found ${IBVERBS_LIB}")
+message(STATUS "RDMA plugins - found ${MLX5_LIB}")
+
+include_directories(${IBVERBS_INCLUDE_DIR})
+
+add_vpp_plugin(rdma
+  SOURCES
+  cli.c
+  device.c
+  format.c
+  plugin.c
+  input.c
+  output.c
+
+  MULTIARCH_SOURCES
+  input.c
+  output.c
+
+  LINK_FLAGS
+  "${RDMA_LINK_FLAGS}"
+
+  LINK_LIBRARIES
+  ${IBVERBS_LIB}
+)