1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2015-2023 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 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