From: Nikolay Aleksandrov <razor@blackwall.org>
To: Bobby Eshleman <bobbyeshleman@gmail.com>
Cc: "Donald Hunter" <donald.hunter@gmail.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
"Eric Dumazet" <edumazet@google.com>,
"Paolo Abeni" <pabeni@redhat.com>,
"Simon Horman" <horms@kernel.org>,
"Andrew Lunn" <andrew+netdev@lunn.ch>,
"Gerd Hoffmann" <kraxel@redhat.com>,
"Vivek Kasireddy" <vivek.kasireddy@intel.com>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Christian König" <christian.koenig@amd.com>,
"Shuah Khan" <shuah@kernel.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org,
linaro-mm-sig@lists.linaro.org, linux-kselftest@vger.kernel.org,
sdf@fomichev.me, daniel@iogearbox.net, almasrymina@google.com,
matttbe@kernel.org, skhawaja@google.com, dw@davidwei.uk,
"Joe Damato" <joe@dama.to>,
"Bobby Eshleman" <bobbyeshleman@meta.com>
Subject: Re: [PATCH net-next v6 2/3] selftests/net: ncdevmem: add -b option to set rx-page-size on bind
Date: Mon, 27 Jul 2026 12:03:06 +0300 [thread overview]
Message-ID: <amceyvCsHb_B1-Of@penguin> (raw)
In-Reply-To: <20260724-tcpdm-large-niovs-v6-2-7975f62cdfbb@meta.com>
On Fri, Jul 24, 2026 at 02:21:16PM -0700, Bobby Eshleman wrote:
> From: Bobby Eshleman <bobbyeshleman@meta.com>
>
> Add -b <bytes> to request a non-default niov size via
> NETDEV_A_DMABUF_RX_PAGE_SIZE. When the value exceeds PAGE_SIZE,
> udmabuf_alloc() switches to an MFD_HUGETLB-backed memfd so each 2 MB
> hugepage produces one naturally-aligned sg entry.
>
> Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>
> Acked-by: Stanislav Fomichev <sdf@fomichev.me>
> ---
> tools/testing/selftests/drivers/net/hw/ncdevmem.c | 36 +++++++++++++++++++++--
> 1 file changed, 33 insertions(+), 3 deletions(-)
>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
next prev parent reply other threads:[~2026-07-27 9:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-24 21:21 [PATCH net-next v6 0/3] net: devmem: allow rx-buf-size > PAGE_SIZE per binding Bobby Eshleman
2026-07-24 21:21 ` [PATCH net-next v6 1/3] net: devmem: allow rx-page-size > PAGE_SIZE per dmabuf binding Bobby Eshleman
2026-07-27 8:59 ` Nikolay Aleksandrov
2026-07-24 21:21 ` [PATCH net-next v6 2/3] selftests/net: ncdevmem: add -b option to set rx-page-size on bind Bobby Eshleman
2026-07-27 9:03 ` Nikolay Aleksandrov [this message]
2026-07-24 21:21 ` [PATCH net-next v6 3/3] selftests/net: devmem.py: add check_rx_large_niov Bobby Eshleman
2026-07-27 9:14 ` Nikolay Aleksandrov
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