Commit a190430c authored by Johannes Berg's avatar Johannes Berg Committed by Luca Coelho
Browse files

iwlwifi: op-mode API: add rx_rss method 



Upcoming hardware will have the ability to do L3 hashing for RSS,
directing data packets (and perhaps some associated metadata and
management notifications) to different MSI-X vectors.

In this case, it makes no sense to go through the full RX dispatch
since it's already known that only a subset of the possibilities
can come in, requiring a new receive method. In addition this must
know which queue the packet was received on.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent 19390893

drivers/net/wireless/iwlwifi/iwl-op-mode.h

+18 −1
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
 *

 * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.

 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH

 * Copyright(c) 2015        Intel Deutschland GmbH

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of version 2 of the GNU General Public License as
@@ -33,6 +34,7 @@ 
 *

 * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.

 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH

 * Copyright(c) 2015        Intel Deutschland GmbH

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without
@@ -108,7 +110,8 @@ struct iwl_cfg; 
 * interact with it. The driver layer typically calls the start and stop

 * handlers, the transport layer calls the others.

 *

 * All the handlers MUST be implemented

 * All the handlers MUST be implemented, except @rx_rss which can be left

 * out *iff* the opmode will never run on hardware with multi-queue capability.

 *

 * @start: start the op_mode. The transport layer is already allocated.

 *	May sleep
@@ -116,6 +119,10 @@ struct iwl_cfg; 
 *	May sleep

 * @rx: Rx notification to the op_mode. rxb is the Rx buffer itself. Cmd is the

 *	HCMD this Rx responds to. Can't sleep.

 * @rx_rss: data queue RX notification to the op_mode, for (data) notifications

 *	received on the RSS queue(s). The queue parameter indicates which of the

 *	RSS queues received this frame; it will always be non-zero.

 *	This method must not sleep.

 * @queue_full: notifies that a HW queue is full.

 *	Must be atomic and called with BH disabled.

 * @queue_not_full: notifies that a HW queue is not full any more.
@@ -146,6 +153,8 @@ struct iwl_op_mode_ops { 
	void (*stop)(struct iwl_op_mode *op_mode);

	void (*rx)(struct iwl_op_mode *op_mode, struct napi_struct *napi,

		   struct iwl_rx_cmd_buffer *rxb);

	void (*rx_rss)(struct iwl_op_mode *op_mode, struct napi_struct *napi,

		       struct iwl_rx_cmd_buffer *rxb, unsigned int queue);

	void (*queue_full)(struct iwl_op_mode *op_mode, int queue);

	void (*queue_not_full)(struct iwl_op_mode *op_mode, int queue);

	bool (*hw_rf_kill)(struct iwl_op_mode *op_mode, bool state);
@@ -186,6 +195,14 @@ static inline void iwl_op_mode_rx(struct iwl_op_mode *op_mode, 
	return op_mode->ops->rx(op_mode, napi, rxb);

}



static inline void iwl_op_mode_rx_rss(struct iwl_op_mode *op_mode,

				      struct napi_struct *napi,

				      struct iwl_rx_cmd_buffer *rxb,

				      unsigned int queue)

{

	op_mode->ops->rx_rss(op_mode, napi, rxb, queue);

}



static inline void iwl_op_mode_queue_full(struct iwl_op_mode *op_mode,

					  int queue)

{

CRA Git | Maintained and supported by SUSTech CRA and CCSE