1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2015-2024 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_RSS_H
33 #define ENA_RSS_H
34
35 #include "opt_rss.h"
36
37 #include <sys/types.h>
38
39 #ifdef RSS
40 #include <net/rss_config.h>
41 #endif
42
43 #include "ena.h"
44
45 #define ENA_RX_RSS_MSG_RECORD_SZ 8
46
47 struct ena_indir {
48 uint32_t table[ENA_RX_RSS_TABLE_SIZE];
49 /* This is the buffer wired to `rss.indir_table` sysctl. */
50 char sysctl_buf[ENA_RX_RSS_TABLE_SIZE * ENA_RX_RSS_MSG_RECORD_SZ];
51 };
52
53 int ena_rss_set_hash(struct ena_com_dev *ena_dev, const u8 *key);
54 int ena_rss_get_hash_key(struct ena_com_dev *ena_dev, u8 *key);
55 int ena_rss_configure(struct ena_adapter *);
56 int ena_rss_indir_get(struct ena_adapter *adapter, uint32_t *table);
57 int ena_rss_indir_set(struct ena_adapter *adapter, uint32_t *table);
58 int ena_rss_indir_init(struct ena_adapter *adapter);
59
60 static inline void
ena_rss_copy_indir_buf(char * buf,uint32_t * table)61 ena_rss_copy_indir_buf(char *buf, uint32_t *table)
62 {
63 int i;
64
65 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; ++i) {
66 buf += snprintf(buf, ENA_RX_RSS_MSG_RECORD_SZ + 1, "%s%d:%d",
67 i == 0 ? "" : " ", i, table[i]);
68 }
69 }
70
71 #endif /* !(ENA_RSS_H) */
72