d1344405f3
In NETMAP mode not all queues need to be allocated to NETMAP. Some of them could be left to the kernel. Configuration is managed by the flags nr_mode and nr_pending_mode provided per each NETMAP kring. ENA driver checks those flags and perform proper rings initialization. Differential Revision: https://reviews.freebsd.org/D21937 Submitted by: Rafal Kozik <rk@semihalf.com> Michal Krawczyk <mk@semihalf.com> Obtained from: Semihalf Sponsored by: Amazon, Inc.
61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) 2015-2019 Amazon.com, Inc. or its affiliates.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef _ENA_NETMAP_H_
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#define _ENA_NETMAP_H_
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/* Undef (un)likely as they are defined in netmap_kern.h */
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#ifdef likely
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#undef likely
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#endif /* likely */
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#ifdef unlikely
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#undef unlikely
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#endif /* unlikely */
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#include <net/netmap.h>
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#include <sys/selinfo.h>
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#include <dev/netmap/netmap_kern.h>
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int ena_netmap_attach(struct ena_adapter *);
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int ena_netmap_alloc_rx_slot(struct ena_adapter *, struct ena_ring *,
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struct ena_rx_buffer *);
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void ena_netmap_free_rx_slot(struct ena_adapter *, struct ena_ring *,
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struct ena_rx_buffer *);
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bool ena_rx_ring_in_netmap(struct ena_adapter *, int);
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bool ena_tx_ring_in_netmap(struct ena_adapter *, int);
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void ena_netmap_reset_rx_ring(struct ena_adapter *, int);
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void ena_netmap_reset_tx_ring(struct ena_adapter *, int);
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void ena_netmap_unload(struct ena_adapter *, bus_dmamap_t);
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#endif /* _ENA_NETMAP_H_ */
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