A problem encountered with Mellanox PMDs and frequently reported by DPDK application developers and Linux distribution package maintainers is their dependency on rdma-core components, namely libibverbs, libmlx4, and libmlx5.
For best performance in applications, DPDK is normally built as a collection of library archives (.a files), whose external dependencies are inherited through rte.app.mk during link. When these PMDs are built-in, any binary DPDK package, whether DPDK itself or derived applications, always have to pull rdma-core. This dependency is not obvious and may be missed during the packaging of any intermediate layer between DPDK itself and the end application. While still required during compilation, this series trades this hard dependency for an optional one, dynamically loaded at run-time through dlopen(). It supersedes Shachar's previous work on the same topic [1] using a different approach in order to preserve symbol versioning and address the remaining issues. [1] http://dpdk.org/ml/archives/dev/2017-December/085090.html v3 changes: - Rebased on dpdk-next-net-mlx. - Modified patches to generate mlx4/mlx5 glue objects as independent libraries to install on the target system (they are not generated at run time anymore) in order to address security concerns. - As a consequence, glue libraries generation is now disabled by default and binary distributions must take care of properly packaging them if enabled. v2 changes: - Rebased on dpdk-next-net-mlx. - Rely on CONFIG_RTE_LIBRTE_MLX[45]_DLOPEN_DEPS instead of CONFIG_RTE_BUILD_SHARED_LIB to enable this mode, so it can be overridden if necessary. - Fixed -lmlx5 -libibverbs leftovers in rte.app.mk. - Minor fixes for indentation and unnecessary includes in mlx5. Adrien Mazarguil (3): net/mlx4: move rdma-core calls to separate file net/mlx4: spawn rdma-core dependency plug-in net/mlx5: spawn rdma-core dependency plug-in Nelio Laranjeiro (1): net/mlx5: move rdma-core calls to separate file config/common_base | 2 + doc/guides/nics/mlx4.rst | 13 ++ doc/guides/nics/mlx5.rst | 13 ++ drivers/net/mlx4/Makefile | 30 ++++ drivers/net/mlx4/mlx4.c | 84 ++++++++-- drivers/net/mlx4/mlx4_ethdev.c | 3 +- drivers/net/mlx4/mlx4_flow.c | 32 ++-- drivers/net/mlx4/mlx4_glue.c | 275 ++++++++++++++++++++++++++++++ drivers/net/mlx4/mlx4_glue.h | 80 +++++++++ drivers/net/mlx4/mlx4_intr.c | 10 +- drivers/net/mlx4/mlx4_mr.c | 7 +- drivers/net/mlx4/mlx4_rxq.c | 53 +++--- drivers/net/mlx4/mlx4_txq.c | 17 +- drivers/net/mlx5/Makefile | 30 ++++ drivers/net/mlx5/mlx5.c | 92 ++++++++--- drivers/net/mlx5/mlx5_ethdev.c | 7 +- drivers/net/mlx5/mlx5_flow.c | 92 +++++------ drivers/net/mlx5/mlx5_glue.c | 321 ++++++++++++++++++++++++++++++++++++ drivers/net/mlx5/mlx5_glue.h | 99 +++++++++++ drivers/net/mlx5/mlx5_mr.c | 7 +- drivers/net/mlx5/mlx5_rxq.c | 54 +++--- drivers/net/mlx5/mlx5_txq.c | 22 +-- drivers/net/mlx5/mlx5_vlan.c | 13 +- mk/rte.app.mk | 8 + 24 files changed, 1179 insertions(+), 185 deletions(-) create mode 100644 drivers/net/mlx4/mlx4_glue.c create mode 100644 drivers/net/mlx4/mlx4_glue.h create mode 100644 drivers/net/mlx5/mlx5_glue.c create mode 100644 drivers/net/mlx5/mlx5_glue.h -- 2.11.0
