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iwlwifi: op-mode API: add rx_rss method

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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: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg 2015-05-22 10:52:26 +02:00 committed by Luca Coelho
parent 1939089300
commit a190430c5e
1 changed files with 18 additions and 1 deletions
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19
drivers/net/wireless/iwlwifi/iwl-op-mode.h
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@ -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)
{