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Date: Tue, 2 Apr 2024 17:20:38 -0700
From: Mina Almasry <almasrymina@...gle.com>
To: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-doc@...r.kernel.org, linux-alpha@...r.kernel.org,
linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
sparclinux@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
linux-arch@...r.kernel.org, bpf@...r.kernel.org,
linux-kselftest@...r.kernel.org, linux-media@...r.kernel.org,
dri-devel@...ts.freedesktop.org
Cc: Mina Almasry <almasrymina@...gle.com>, "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Jonathan Corbet <corbet@....net>, Richard Henderson <richard.henderson@...aro.org>,
Ivan Kokshaysky <ink@...assic.park.msu.ru>, Matt Turner <mattst88@...il.com>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, Helge Deller <deller@....de>,
Andreas Larsson <andreas@...sler.com>, Jesper Dangaard Brouer <hawk@...nel.org>,
Ilias Apalodimas <ilias.apalodimas@...aro.org>, Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Arnd Bergmann <arnd@...db.de>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <martin.lau@...ux.dev>,
Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>,
Yonghong Song <yonghong.song@...ux.dev>, John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>,
Jiri Olsa <jolsa@...nel.org>, Steffen Klassert <steffen.klassert@...unet.com>,
Herbert Xu <herbert@...dor.apana.org.au>, David Ahern <dsahern@...nel.org>,
Willem de Bruijn <willemdebruijn.kernel@...il.com>, Shuah Khan <shuah@...nel.org>,
Sumit Semwal <sumit.semwal@...aro.org>,
"Christian König" <christian.koenig@....com>, Amritha Nambiar <amritha.nambiar@...el.com>,
Maciej Fijalkowski <maciej.fijalkowski@...el.com>,
Alexander Mikhalitsyn <alexander@...alicyn.com>, Kaiyuan Zhang <kaiyuanz@...gle.com>,
Christian Brauner <brauner@...nel.org>, Simon Horman <horms@...nel.org>,
David Howells <dhowells@...hat.com>, Florian Westphal <fw@...len.de>,
Yunsheng Lin <linyunsheng@...wei.com>, Kuniyuki Iwashima <kuniyu@...zon.com>, Jens Axboe <axboe@...nel.dk>,
Arseniy Krasnov <avkrasnov@...utedevices.com>,
Aleksander Lobakin <aleksander.lobakin@...el.com>, Michael Lass <bevan@...co.net>,
Jiri Pirko <jiri@...nulli.us>, Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Lorenzo Bianconi <lorenzo@...nel.org>, Richard Gobert <richardbgobert@...il.com>,
Sridhar Samudrala <sridhar.samudrala@...el.com>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
Johannes Berg <johannes.berg@...el.com>, Abel Wu <wuyun.abel@...edance.com>,
Breno Leitao <leitao@...ian.org>, Pavel Begunkov <asml.silence@...il.com>, David Wei <dw@...idwei.uk>,
Jason Gunthorpe <jgg@...pe.ca>, Shailend Chand <shailend@...gle.com>,
Harshitha Ramamurthy <hramamurthy@...gle.com>, Shakeel Butt <shakeel.butt@...ux.dev>,
Jeroen de Borst <jeroendb@...gle.com>, Praveen Kaligineedi <pkaligineedi@...gle.com>
Subject: [RFC PATCH net-next v8 01/14] queue_api: define queue api
This API enables the net stack to reset the queues used for devmem TCP.
Signed-off-by: Mina Almasry <almasrymina@...gle.com>
---
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.
*
--
2.44.0.478.gd926399ef9-goog
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