From: Viacheslav Ovsiienko Date: Mon, 26 Oct 2020 11:55:05 +0000 (+0000) Subject: doc: add Rx buffer split limitation to mlx5 guide X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=eaf691f95053c58d44b85a66f9a904e17772e413;p=dpdk.git doc: add Rx buffer split limitation to mlx5 guide The buffer split feature is mentioned in the mlx5 PMD documentation, the limitation is description is added as well. Signed-off-by: Viacheslav Ovsiienko Acked-by: Matan Azrad --- diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst index 7f0bfedefd..9469331884 100644 --- a/doc/guides/nics/mlx5.rst +++ b/doc/guides/nics/mlx5.rst @@ -59,7 +59,8 @@ Features - Multi arch support: x86_64, POWER8, ARMv8, i686. - Multiple TX and RX queues. -- Support for scattered TX and RX frames. +- Support for scattered TX frames. +- Advanced support for scattered Rx frames with tunable buffer attributes. - IPv4, IPv6, TCPv4, TCPv6, UDPv4 and UDPv6 RSS on any number of queues. - RSS using different combinations of fields: L3 only, L4 only or both, and source only, destination only or both. @@ -187,6 +188,9 @@ Limitations the device. In case of ungraceful program termination, some entries may remain present and should be removed manually by other means. +- Buffer split offload is supported with regular Rx burst routine only, + no MPRQ feature or vectorized code can be engaged. + - When Multi-Packet Rx queue is configured (``mprq_en``), a Rx packet can be externally attached to a user-provided mbuf with having EXT_ATTACHED_MBUF in ol_flags. As the mempool for the external buffer is managed by PMD, all the