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 --git a/include/linux/netdevice.h b/include/linux/netdevice.h index e41d30ebaca6..3d3af8f7f9c9 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1956,6 +1956,7 @@ 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 @@ -2338,6 +2339,8 @@ 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. *