netdev - [net-next v1 03/16] queue

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Date: Thu,  7 Dec 2023 16:52:34 -0800
From: Mina Almasry <almasrymina@...gle.com>
To: Shailend Chand <shailend@...gle.com>, netdev@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, 
	linux-arch@...r.kernel.org, linux-kselftest@...r.kernel.org, 
	bpf@...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>, Jeroen de Borst <jeroendb@...gle.com>, 
	Praveen Kaligineedi <pkaligineedi@...gle.com>, Jesper Dangaard Brouer <hawk@...nel.org>, 
	Ilias Apalodimas <ilias.apalodimas@...aro.org>, Arnd Bergmann <arnd@...db.de>, 
	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>, Yunsheng Lin <linyunsheng@...wei.com>, 
	Harshitha Ramamurthy <hramamurthy@...gle.com>, Shakeel Butt <shakeelb@...gle.com>
Subject: [net-next v1 03/16] queue_api: define queue api

This API enables the net stack to reset the queues used for devmem.

Signed-off-by: Mina Almasry <almasrymina@...gle.com>

---
 include/linux/netdevice.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 1b935ee341b4..316f7dee86ce 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1432,6 +1432,20 @@ struct netdev_net_notifier {
  *			   struct kernel_hwtstamp_config *kernel_config,
  *			   struct netlink_ext_ack *extack);
  *	Change the hardware timestamping parameters for NIC device.
+ *
+ * void *(*ndo_queue_mem_alloc)(struct net_device *dev, int idx);
+ *	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.
+ *
+ * void	(*ndo_queue_mem_free)(struct net_device *dev, void *);
+ *	Free memory from an RX queue.
+ *
+ * int (*ndo_queue_start)(struct net_device *dev, int idx, void *);
+ *	Start an RX queue at the specified index.
+ *
+ * int (*ndo_queue_stop)(struct net_device *dev, int idx, void **);
+ *	Stop the RX queue at the specified index.
  */
 struct net_device_ops {
 	int			(*ndo_init)(struct net_device *dev);
@@ -1673,6 +1687,16 @@ struct net_device_ops {
 	int			(*ndo_hwtstamp_set)(struct net_device *dev,
 						    struct kernel_hwtstamp_config *kernel_config,
 						    struct netlink_ext_ack *extack);
+	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);
 };
 
 /**
-- 
2.43.0.472.g3155946c3a-goog