[dpdk-dev] [PATCH v2 0/4] net/mlx: make rdma-core optional at run-time
Nélio Laranjeiro
nelio.laranjeiro at 6wind.com
Fri Jan 26 16:58:57 CET 2018
On Fri, Jan 26, 2018 at 03:18:55PM +0100, Adrien Mazarguil wrote:
> 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
>
> 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 | 42 +++++
> drivers/net/mlx4/mlx4.c | 115 +++++++++++--
> 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 | 42 +++++
> drivers/net/mlx5/mlx5.c | 123 +++++++++++---
> 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, 1265 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
Acked-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
--
Nélio Laranjeiro
6WIND
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