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freebsd-nq/sys/dev/ena/ena_netmap.h

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Introduce NETMAP support in ENA Mock implementation of NETMAP routines is located in ena_netmap.c/.h files. All code is protected under the DEV_NETMAP macro. Makefile was updated with files and flag. As ENA driver provide own implementations of (un)likely it must be undefined before including NETMAP headers. ena_netmap_attach function is called on the end of NIC attach. It fills structure with NIC configuration and callbacks. Then provides it to netmap_attach. Similarly netmap_detach is called during ena_detach. Three callbacks are used. nm_register is implemented by ena_netmap_reg. It is called when user space application open or close NIC in NETMAP mode. Current action is recognized based on onoff parameter: true means on and false off. As NICs rings need to be reconfigured ena_down and ena_up are reused. When user space application wants to receive new packets from NIC nm_rxsync is called, and when there are new packets ready for Tx nm_txsync is called. Differential Revision: https://reviews.freebsd.org/D21934 Submitted by: Rafal Kozik <rk@semihalf.com> Michal Krawczyk <mk@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.
2019-10-31 15:51:18 +00:00
/*-
* BSD LICENSE
*
Update ENA driver version to v2.2.0 Driver version upgrade is connected with support for the new device fetures, like Tx drops reporting or disabling meta caching. Moreover, the driver configuration from the sysctl was reworked to provide safer and better flow for configuring: * number of IO queues (new feature), * drbr size on Tx, * Rx queue size. Moreover, a lot of minor bug fixes and improvements were added. Copyright date in the license of the modified files in this release was updated to 2020. Submitted by: Michal Krawczyk <mk@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.
2020-05-26 16:11:46 +00:00
* Copyright (c) 2015-2020 Amazon.com, Inc. or its affiliates.
Introduce NETMAP support in ENA Mock implementation of NETMAP routines is located in ena_netmap.c/.h files. All code is protected under the DEV_NETMAP macro. Makefile was updated with files and flag. As ENA driver provide own implementations of (un)likely it must be undefined before including NETMAP headers. ena_netmap_attach function is called on the end of NIC attach. It fills structure with NIC configuration and callbacks. Then provides it to netmap_attach. Similarly netmap_detach is called during ena_detach. Three callbacks are used. nm_register is implemented by ena_netmap_reg. It is called when user space application open or close NIC in NETMAP mode. Current action is recognized based on onoff parameter: true means on and false off. As NICs rings need to be reconfigured ena_down and ena_up are reused. When user space application wants to receive new packets from NIC nm_rxsync is called, and when there are new packets ready for Tx nm_txsync is called. Differential Revision: https://reviews.freebsd.org/D21934 Submitted by: Rafal Kozik <rk@semihalf.com> Michal Krawczyk <mk@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.
2019-10-31 15:51:18 +00:00
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef _ENA_NETMAP_H_
#define _ENA_NETMAP_H_
/* Undef (un)likely as they are defined in netmap_kern.h */
#ifdef likely
#undef likely
#endif /* likely */
#ifdef unlikely
#undef unlikely
#endif /* unlikely */
#include <net/netmap.h>
#include <sys/selinfo.h>
#include <dev/netmap/netmap_kern.h>
Expose argument names for non static ENA driver functions As functions which are declared in the header files are intended to be the interface and are going to be used by other files, it's better to include argument names in the definition, so the caller won't have to check the .c file in order to check their meaning and order. Submitted by: Michal Krawczyk <mk@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.
2020-05-26 15:41:53 +00:00
int ena_netmap_attach(struct ena_adapter *adapter);
int ena_netmap_alloc_rx_slot(struct ena_adapter *adapter,
struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info);
void ena_netmap_free_rx_slot(struct ena_adapter *adapter,
struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info);
bool ena_rx_ring_in_netmap(struct ena_adapter *adapter, int qid);
bool ena_tx_ring_in_netmap(struct ena_adapter *adapter, int qid);
void ena_netmap_reset_rx_ring(struct ena_adapter *adapter, int qid);
void ena_netmap_reset_tx_ring(struct ena_adapter *adapter, int qid);
void ena_netmap_unload(struct ena_adapter *adapter, bus_dmamap_t map);
Introduce NETMAP support in ENA Mock implementation of NETMAP routines is located in ena_netmap.c/.h files. All code is protected under the DEV_NETMAP macro. Makefile was updated with files and flag. As ENA driver provide own implementations of (un)likely it must be undefined before including NETMAP headers. ena_netmap_attach function is called on the end of NIC attach. It fills structure with NIC configuration and callbacks. Then provides it to netmap_attach. Similarly netmap_detach is called during ena_detach. Three callbacks are used. nm_register is implemented by ena_netmap_reg. It is called when user space application open or close NIC in NETMAP mode. Current action is recognized based on onoff parameter: true means on and false off. As NICs rings need to be reconfigured ena_down and ena_up are reused. When user space application wants to receive new packets from NIC nm_rxsync is called, and when there are new packets ready for Tx nm_txsync is called. Differential Revision: https://reviews.freebsd.org/D21934 Submitted by: Rafal Kozik <rk@semihalf.com> Michal Krawczyk <mk@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.
2019-10-31 15:51:18 +00:00
#endif /* _ENA_NETMAP_H_ */
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