6d1ef2abd3
Bind RX/TX queues and MSI-X vectors to matching CPUs based on the RSS bucket entries. Introduce sysctls for the following RSS functionality: - rss.indir_table: indirection table mapping - rss.indir_table_size: indirection table size - rss.key: RSS hash key (if Toeplitz used) Said sysctls are only available when compiled without `option RSS`, as kernel-side RSS support currently doesn't offer RSS reconfiguration. Migrate the hash algorithm from CRC32 to Toeplitz and change the initial hash value to 0x0 in order to match the standard Toeplitz implementation. Provide helpers for hash key inversion required for HW operations. Obtained from: Semihalf MFC after: 2 weeks Sponsored by: Amazon, Inc.
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2015-2021 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_RSS_H
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#define ENA_RSS_H
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#include "opt_rss.h"
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#include <sys/types.h>
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#ifdef RSS
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#include <net/rss_config.h>
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#endif
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#include "ena.h"
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#define ENA_RX_RSS_MSG_RECORD_SZ 8
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struct ena_indir {
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uint32_t table[ENA_RX_RSS_TABLE_SIZE];
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/* This is the buffer wired to `rss.indir_table` sysctl. */
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char sysctl_buf[ENA_RX_RSS_TABLE_SIZE * ENA_RX_RSS_MSG_RECORD_SZ];
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};
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int ena_rss_set_hash(struct ena_com_dev *ena_dev, const u8 *key);
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int ena_rss_get_hash_key(struct ena_com_dev *ena_dev, u8 *key);
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int ena_rss_configure(struct ena_adapter *);
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int ena_rss_indir_get(struct ena_adapter *adapter, uint32_t *table);
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int ena_rss_indir_set(struct ena_adapter *adapter, uint32_t *table);
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int ena_rss_indir_init(struct ena_adapter *adapter);
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static inline void
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ena_rss_copy_indir_buf(char *buf, uint32_t *table)
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{
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int i;
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for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; ++i) {
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buf += snprintf(buf, ENA_RX_RSS_MSG_RECORD_SZ + 1,
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"%s%d:%d", i == 0 ? "" : " ", i, table[i]);
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}
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}
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#endif /* !(ENA_RSS_H) */
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