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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?= " , Pavel Begunkov , David Wei , Jason Gunthorpe , Yunsheng Lin , 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 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. *