diff mbox series

[RFC,net-next,v8,01/14] queue_api: define queue api

Message ID 20240403002053.2376017-2-almasrymina@google.com (mailing list archive)
State RFC
Delegated to: Netdev Maintainers
Headers show
Series Device Memory TCP | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; GEN HAS DIFF 2 files changed, 185 insertions(+);
netdev/fixes_present success Fixes tag not required for -next series
netdev/apply fail Patch patch 6 does not apply to net-next-1
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 4885 this patch: 4885
netdev/build_tools success Errors and warnings before: 0 this patch: 0

Commit Message

Mina Almasry April 3, 2024, 12:20 a.m. UTC 
This API enables the net stack to reset the queues used for devmem TCP.

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

---
 include/linux/netdevice.h   |  3 +++
 include/net/netdev_queues.h | 27 +++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
diff mbox series

Patch

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.
  *