xref: /freebsd/sys/dev/ena/ena_netmap.h (revision 5e3190f700637fcfc1a52daeaa4a031fdd2557c7)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2015-2020 Amazon.com, Inc. or its affiliates.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  *
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  *
30  */
31 
32 #ifndef _ENA_NETMAP_H_
33 #define _ENA_NETMAP_H_
34 
35 /* Undef (un)likely as they are defined in netmap_kern.h */
36 #ifdef likely
37 #undef likely
38 #endif /* likely */
39 #ifdef unlikely
40 #undef unlikely
41 #endif /* unlikely */
42 
43 #include <sys/selinfo.h>
44 
45 #include <net/netmap.h>
46 
47 #include <dev/netmap/netmap_kern.h>
48 
49 int ena_netmap_attach(struct ena_adapter *adapter);
50 int ena_netmap_alloc_rx_slot(struct ena_adapter *adapter,
51     struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info);
52 void ena_netmap_free_rx_slot(struct ena_adapter *adapter,
53     struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info);
54 bool ena_rx_ring_in_netmap(struct ena_adapter *adapter, int qid);
55 bool ena_tx_ring_in_netmap(struct ena_adapter *adapter, int qid);
56 void ena_netmap_reset_rx_ring(struct ena_adapter *adapter, int qid);
57 void ena_netmap_reset_tx_ring(struct ena_adapter *adapter, int qid);
58 void ena_netmap_unload(struct ena_adapter *adapter, bus_dmamap_t map);
59 
60 #endif /* _ENA_NETMAP_H_ */
61