netdev - add an API to check if a streamming mapping needs sync calls

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 29 Jun 2020 15:03:55 +0200
From:   Christoph Hellwig <hch@....de>
To:     Björn Töpel <bjorn.topel@...el.com>
Cc:     Magnus Karlsson <magnus.karlsson@...el.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        iommu@...ts.linux-foundation.org, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: add an API to check if a streamming mapping needs sync calls

Hi all,

this series lifts the somewhat hacky checks in the XSK code if a DMA
streaming mapping needs dma_sync_single_for_{device,cpu} calls to the
DMA API.


Diffstat:
 Documentation/core-api/dma-api.rst |    8 +++++
 include/linux/dma-direct.h         |    1 
 include/linux/dma-mapping.h        |    5 +++
 include/net/xsk_buff_pool.h        |    6 ++--
 kernel/dma/direct.c                |    6 ++++
 kernel/dma/mapping.c               |   10 ++++++
 net/xdp/xsk_buff_pool.c            |   54 ++-----------------------------------
 7 files changed, 37 insertions(+), 53 deletions(-)