From patchwork Wed Apr 3 00:20:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mina Almasry X-Patchwork-Id: 785674 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5BEB963C8 for ; Wed, 3 Apr 2024 00:21:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712103664; cv=none; b=Img7R61TVXZLsP1Vkmh8hBxmqgXosHGAN6MxhPtnyFbFetmqGeDmlohlV97tfRiBSzjkGNAVNCuyZ/A9Y/beXVMW5N1gEmBOQ2MSTXIkQL9xp1AVY5aVx3yMELhthQ4O/OYacZVJOjTxVAmrYf53g26JPeBRK4Jv3VZffmjdQpc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712103664; c=relaxed/simple; bh=gWRcyKODjkpOwskuiMoFPxRJnFLhBJ+2aQ4yyFxaS+w=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=j2k/UjmJNzITzquDdnsTn3BCPpuBoSSO90ca23sDK9bVcxc3QrGDyCEH+eg4L9jy/ic/mTCeklLzG65pXIpNLmt8m3rUZNNDKKAZheTpoUvoBbKsIpi2cD/12S+auw0eI966SKrQdR02YTh4qYYhlppJp4G78fD0m4KX4kfyq2w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--almasrymina.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=qnACVtKh; arc=none smtp.client-ip=209.85.128.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--almasrymina.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="qnACVtKh" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-615365a5ee0so4779887b3.1 for ; Tue, 02 Apr 2024 17:21:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1712103661; x=1712708461; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=i9/eCQL3Z814esAM4yERlEsKsNnrs1jkfV4Puiw4Jo8=; b=qnACVtKhLQTyisTNSFx4mrXyqFeMM0XeeWn0K0IjaNuJg32stlpeFmxHQgQdb5vIg1 EaAtDqZNVDPFMiw/+vy/sc84YcIc0PU1U9w1vcRTT19QmRcym8m2JTAiu5KduzTmoyCP agW7h7hBvAAR2pORQcd8o8fZoBZID6DMJpmtFBW05TWyfQmsPyX7V07n0/mTCXWq4ui3 ufSWs1Rc72Eshz5r97+t9k+qpn7qimmLH+8iRZjFfx7UW2lWqH0luj4oKrcTzPZlnxG3 0fTWXnrGLmbpHCzDYp1bS0BxHr/7XjG1UEJ1HbfuEzdKNF80Rd60kPHlWZ3CoUfeOmiT m99g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712103661; x=1712708461; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=i9/eCQL3Z814esAM4yERlEsKsNnrs1jkfV4Puiw4Jo8=; b=e4onoR+BgiqZWyODbPqw6ZR6i3v/EpqrGMp12A23jxPuT4KLUrBHXGVlUEFT6t2LN9 G9U/cmlwppDxveZVinzex2SNorkMmOveuKnohe+NcvrW70arWkLWIca7BwDkQlMgDFSA hDm++93BSmFHkhB775DgSJshEfz1TSxnG8r/bpYlHfhfdbvLL3ORggdZWuVQQ8NBME5S EnYubO+SvbRDkRuG/djtYDqIkC+EhgJ6Wr4Vywu1nKqRvZbRCKF8ogjaCVl0GW/8vAi+ yZR6Xh8+l2UTOZF3PDNUvV4DWJOFXNy/CDTpVYh8ze4hRz5c+8Dwqt/INb3HovDwVxrq Zurw== X-Forwarded-Encrypted: i=1; AJvYcCUwA427fXuZt1kbUmFm8VHxw8K00J3N4wHE2cABTlGymk5kPd26Xc6NnMVs8dqMQJw/45GeDdkob5EG4Aul5GaeJYf2H0UgFJwFt1E= X-Gm-Message-State: AOJu0YwLLm5BuhGRbcQPXZ+B7CqpbWv27rWepQvw1J2UeiuUJKU4nefv l0FikXvt8M4GyZbt5A19xpaRFe78l/fGFf7SWbYPl6IXeYwES4sZSdIWnnkwQ7A3UFwgQ7giBYy n6yZiafv8jVeEasTp70CmxA== X-Google-Smtp-Source: AGHT+IEZw1b9YZ8Zp4JXJHyLl5eFcaHCSQtcR+nvQGLDuxNqnIQQLwTQ0GAhyCF5Qg5vadT+0s6oURJ/cEWaFMIVxQ== X-Received: from almasrymina.svl.corp.google.com ([2620:15c:2c4:200:1726:7620:90a1:78b9]) (user=almasrymina job=sendgmr) by 2002:a81:b703:0:b0:615:f67:53e2 with SMTP id v3-20020a81b703000000b006150f6753e2mr206828ywh.2.1712103661503; Tue, 02 Apr 2024 17:21:01 -0700 (PDT) Date: Tue, 2 Apr 2024 17:20:38 -0700 In-Reply-To: <20240403002053.2376017-1-almasrymina@google.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240403002053.2376017-1-almasrymina@google.com> X-Mailer: git-send-email 2.44.0.478.gd926399ef9-goog Message-ID: <20240403002053.2376017-2-almasrymina@google.com> Subject: [RFC PATCH net-next v8 01/14] queue_api: define queue api From: Mina Almasry To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-alpha@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, sparclinux@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-arch@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: Mina Almasry , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jonathan Corbet , Richard Henderson , Ivan Kokshaysky , Matt Turner , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Andreas Larsson , Jesper Dangaard Brouer , Ilias Apalodimas , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Arnd Bergmann , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Steffen Klassert , Herbert Xu , David Ahern , Willem de Bruijn , Shuah Khan , Sumit Semwal , " =?utf-8?q?Christian_K=C3=B6nig?= " , Amritha Nambiar , Maciej Fijalkowski , Alexander Mikhalitsyn , Kaiyuan Zhang , Christian Brauner , Simon Horman , David Howells , Florian Westphal , Yunsheng Lin , Kuniyuki Iwashima , Jens Axboe , Arseniy Krasnov , Aleksander Lobakin , Michael Lass , Jiri Pirko , Sebastian Andrzej Siewior , Lorenzo Bianconi , Richard Gobert , Sridhar Samudrala , Xuan Zhuo , Johannes Berg , Abel Wu , Breno Leitao , Pavel Begunkov , David Wei , Jason Gunthorpe , Shailend Chand , Harshitha Ramamurthy , Shakeel Butt , Jeroen de Borst , Praveen Kaligineedi This API enables the net stack to reset the queues used for devmem TCP. Signed-off-by: Mina Almasry --- include/linux/netdevice.h | 3 +++ include/net/netdev_queues.h | 27 +++++++++++++++++++++++++++ 2 files changed, 30 insertions(+) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 7d12b5a9380f..a0bd542d143a 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1957,6 +1957,7 @@ enum netdev_reg_state { * @sysfs_rx_queue_group: Space for optional per-rx queue attributes * @rtnl_link_ops: Rtnl_link_ops * @stat_ops: Optional ops for queue-aware statistics + * @queue_mgmt_ops: Optional ops for queue management * * @gso_max_size: Maximum size of generic segmentation offload * @tso_max_size: Device (as in HW) limit on the max TSO request size @@ -2339,6 +2340,8 @@ struct net_device { const struct netdev_stat_ops *stat_ops; + const struct netdev_queue_mgmt_ops *queue_mgmt_ops; + /* for setting kernel sock attribute on TCP connection setup */ #define GSO_MAX_SEGS 65535u #define GSO_LEGACY_MAX_SIZE 65536u diff --git a/include/net/netdev_queues.h b/include/net/netdev_queues.h index 1ec408585373..337df0860ae6 100644 --- a/include/net/netdev_queues.h +++ b/include/net/netdev_queues.h @@ -60,6 +60,33 @@ struct netdev_stat_ops { struct netdev_queue_stats_tx *tx); }; +/** + * struct netdev_queue_mgmt_ops - netdev ops for queue management + * + * @ndo_queue_mem_alloc: Allocate memory for an RX queue. The memory returned + * in the form of a void* can be passed to + * ndo_queue_mem_free() for freeing or to ndo_queue_start + * to create an RX queue with this memory. + * + * @ndo_queue_mem_free: Free memory from an RX queue. + * + * @ndo_queue_start: Start an RX queue at the specified index. + * + * @ndo_queue_stop: Stop the RX queue at the specified index. + */ +struct netdev_queue_mgmt_ops { + void * (*ndo_queue_mem_alloc)(struct net_device *dev, + int idx); + void (*ndo_queue_mem_free)(struct net_device *dev, + void *queue_mem); + int (*ndo_queue_start)(struct net_device *dev, + int idx, + void *queue_mem); + int (*ndo_queue_stop)(struct net_device *dev, + int idx, + void **out_queue_mem); +}; + /** * DOC: Lockless queue stopping / waking helpers. *