Hi, > -----Original Message----- > From: dev <dev-boun...@dpdk.org> On Behalf Of Matan Azrad > Sent: Monday, July 22, 2019 12:13 PM > To: Shahaf Shuler <shah...@mellanox.com>; Yongseok Koh > <ys...@mellanox.com>; Slava Ovsiienko <viachesl...@mellanox.com> > Cc: dev@dpdk.org; Dekel Peled <dek...@mellanox.com> > Subject: [dpdk-dev] [PATCH 00/28] net/mlx5: support LRO > > Introduction: > LRO (Large Receive Offload) is intended to reduce host CPU overhead when > processing Rx TCP packets. > LRO works by aggregating multiple incoming packets from a single stream > into a larger buffer, before they are passed higher up the networking stack. > Thus reducing the number of packets that have to be processed. > > Use: > MLX5 PMD will query the HCA capabilities on initialization to check if LRO is > supported and can be used. > LRO in MLX5 PMD is intended for use by applications using a relatively small > number of flows. > LRO support can be enabled only per port. > In each LRO session, packets of the same flow will be coalesced until one of > the following occur: > * Buffer size limit is exceeded. > * Session timeout is exceeded. > * Packet from a different flow is received on the same queue. > > When LRO session ends the coalesced packet is passed to the PMD, which > will update the header fields before passing the packet to the application. > For efficient memory utilization, the MPRQ mechanism is used. > Support of Non-LRO flows will not be impacted. > > Existing API: > Offload capability DEV_RX_OFFLOAD_TCP_LRO will be used to indicate > device supports LRO. > testpmd command-line option "-enable-lro" will be used to request LRO > feature enable on application start. > testpmd rx_offload "tcp_lro" on or off will be used to request LRO feature > enable or disable during application runtime. > Offload flag PKT_RX_LRO will be used. This flag can be set in Rx mbuf to > indicate this is a LRO coalesced packet. > > New API: > PMD configuration parameter lro_timeout_usec will be added. > This parameter can be used by application to select LRO session timeout (in > microseconds). > If this value is not specified, the minimal value supported by device will be > used. > > Known limitations: > mbuf head-room is zero for any packet if LRO is configured in the port. > Keep CRC offload cannot be supported with LRO. > CQE compression is not supported with LRO. > > Dekel Peled (23): > net/mlx5: remove redundant item from union > net/mlx5: add LRO APIs and initial settings > net/mlx5: support LRO caps query using devx API > net/mlx5: glue func for queue query using new API > net/mlx5: glue function for action using new API > net/mlx5: check conditions to enable LRO > net/mlx5: support Tx interface query using new API > net/mlx5: update Tx queue create for LRO > net/mlx5: create advanced RxQ object using new API > net/mlx5: modify advanced RxQ object using new API > net/mlx5: create advanced Rx object using new API > net/mlx5: create advanced RxQ table using new API > net/mlx5: allocate door-bells using new API > net/mlx5: rename RxQ verbs to general RxQ object > net/mlx5: rename verbs indirection table to obj > net/mlx5: rename hash RxQ verbs to general > net/mlx5: update queue state modify function > net/mlx5: store protection domain number on create > net/mlx5: func to create Rx verbs completion queue > net/mlx5: function to create Rx verbs work queue > net/mlx5: create advanced RxQ using new API > net/mlx5: support LRO with single RxQ object > doc: update MLX5 doc and release notes with LRO > > Matan Azrad (5): > net/mlx5: replace the external mbuf shared memory > net/mlx5: update LRO fields in completion entry > net/mlx5: handle LRO packets in Rx queue > net/mlx5: zero the LRO mbuf headroom > net/mlx5: adjust the maximum LRO message size > > doc/guides/nics/features/mlx5.ini | 1 + > doc/guides/nics/mlx5.rst | 14 + > doc/guides/rel_notes/release_19_08.rst | 2 +- > drivers/net/mlx5/Makefile | 5 + > drivers/net/mlx5/meson.build | 2 + > drivers/net/mlx5/mlx5.c | 223 ++++++- > drivers/net/mlx5/mlx5.h | 160 ++++- > drivers/net/mlx5/mlx5_devx_cmds.c | 326 +++++++++ > drivers/net/mlx5/mlx5_ethdev.c | 14 +- > drivers/net/mlx5/mlx5_flow.h | 6 + > drivers/net/mlx5/mlx5_flow_dv.c | 28 +- > drivers/net/mlx5/mlx5_flow_verbs.c | 3 +- > drivers/net/mlx5/mlx5_glue.c | 33 + > drivers/net/mlx5/mlx5_glue.h | 6 +- > drivers/net/mlx5/mlx5_prm.h | 379 ++++++++++- > drivers/net/mlx5/mlx5_rxq.c | 1135 ++++++++++++++++++++++------- > --- > drivers/net/mlx5/mlx5_rxtx.c | 167 ++++- > drivers/net/mlx5/mlx5_rxtx.h | 80 ++- > drivers/net/mlx5/mlx5_rxtx_vec.h | 6 +- > drivers/net/mlx5/mlx5_rxtx_vec_sse.h | 16 +- > drivers/net/mlx5/mlx5_trigger.c | 12 +- > drivers/net/mlx5/mlx5_txq.c | 27 +- > drivers/net/mlx5/mlx5_vlan.c | 32 +- > 23 files changed, 2197 insertions(+), 480 deletions(-) > > -- > 1.8.3.1
Series applied to next-net-mlx, Kindest regards, Raslan Darawsheh
