71d104536b
The ice(4) driver is the driver for the Intel E8xx series Ethernet controllers; currently with codenames Columbiaville and Columbia Park. These new controllers support 100G speeds, as well as introducing more queues, better virtualization support, and more offload capabilities. Future work will enable virtual functions (like in ixl(4)) and the other functionality outlined above. For full functionality, the kernel should be compiled with "device ice_ddp" like in the amd64 NOTES file, and/or ice_ddp_load="YES" should be added to /boot/loader.conf so that the DDP package file included in this commit can be downloaded to the adapter. Otherwise, the adapter will fall back to a single queue mode with limited functionality. A man page for this driver will be forthcoming. MFC after: 1 month Relnotes: yes Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D21959
118 lines
4.6 KiB
C
118 lines
4.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/* Copyright (c) 2020, Intel Corporation
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* 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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* 3. Neither the name of the Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*$FreeBSD$*/
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/**
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* @file ice_rss.h
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* @brief default RSS values if kernel RSS is not enabled
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*
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* This header includes default definitions for RSS functionality if the
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* kernel RSS interface is not enabled. This allows main driver code to avoid
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* having to check the RSS ifdef throughout, but instead just use the RSS
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* definitions, as they will fall back to these defaults when the kernel
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* interface is disabled.
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*/
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#ifndef _ICE_RSS_H_
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#define _ICE_RSS_H_
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#ifdef RSS
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// We have the kernel RSS interface available
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#include <net/rss_config.h>
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/* Make sure our key size buffer has enough space to store the kernel RSS key */
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CTASSERT(ICE_AQC_GET_SET_RSS_KEY_DATA_RSS_KEY_SIZE >= RSS_KEYSIZE);
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#else
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/* The kernel RSS interface is not enabled. Use suitable defaults for the RSS
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* configuration functions.
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*
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* The RSS hash key will be a pre-generated random key.
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* The number of buckets will just match the number of CPUs.
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* The lookup table will be assigned using round-robin with no indirection.
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* The RSS hash configuration will be set to suitable defaults.
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*/
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#define RSS_HASHTYPE_RSS_IPV4 (1 << 1) /* IPv4 2-tuple */
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#define RSS_HASHTYPE_RSS_TCP_IPV4 (1 << 2) /* TCPv4 4-tuple */
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#define RSS_HASHTYPE_RSS_IPV6 (1 << 3) /* IPv6 2-tuple */
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#define RSS_HASHTYPE_RSS_TCP_IPV6 (1 << 4) /* TCPv6 4-tuple */
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#define RSS_HASHTYPE_RSS_IPV6_EX (1 << 5) /* IPv6 2-tuple + ext hdrs */
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#define RSS_HASHTYPE_RSS_TCP_IPV6_EX (1 << 6) /* TCPv6 4-tiple + ext hdrs */
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#define RSS_HASHTYPE_RSS_UDP_IPV4 (1 << 7) /* IPv4 UDP 4-tuple */
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#define RSS_HASHTYPE_RSS_UDP_IPV6 (1 << 9) /* IPv6 UDP 4-tuple */
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#define RSS_HASHTYPE_RSS_UDP_IPV6_EX (1 << 10) /* IPv6 UDP 4-tuple + ext hdrs */
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#define ICE_DEFAULT_RSS_HASH_CONFIG \
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((u_int)(RSS_HASHTYPE_RSS_IPV4 | \
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RSS_HASHTYPE_RSS_TCP_IPV4 | \
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RSS_HASHTYPE_RSS_UDP_IPV4 | \
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RSS_HASHTYPE_RSS_IPV6 | \
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RSS_HASHTYPE_RSS_TCP_IPV6 | \
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RSS_HASHTYPE_RSS_UDP_IPV6))
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#define rss_getkey(key) ice_get_default_rss_key(key)
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#define rss_getnumbuckets() (mp_ncpus)
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#define rss_get_indirection_to_bucket(index) (index)
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#define rss_gethashconfig() (ICE_DEFAULT_RSS_HASH_CONFIG)
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/**
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* rss_hash2bucket - Determine the bucket for a given hash value
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* @hash_val: the hash value to use
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* @hash_type: the type of the hash
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* @bucket_id: on success, updated with the bucket
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*
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* This function simply verifies that the hash type is known. If it is, then
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* we forward the hash value directly as the bucket id. If the hash type is
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* unknown, we return -1.
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*
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* This is the simplest mechanism for converting a hash value into a bucket,
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* and does not support any form of indirection table.
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*/
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static inline int
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rss_hash2bucket(uint32_t hash_val, uint32_t hash_type, uint32_t *bucket_id)
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{
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switch (hash_type) {
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case M_HASHTYPE_RSS_IPV4:
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case M_HASHTYPE_RSS_TCP_IPV4:
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case M_HASHTYPE_RSS_UDP_IPV4:
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case M_HASHTYPE_RSS_IPV6:
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case M_HASHTYPE_RSS_TCP_IPV6:
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case M_HASHTYPE_RSS_UDP_IPV6:
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*bucket_id = hash_val;
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return (0);
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default:
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return (-1);
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}
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}
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#endif /* !RSS */
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#endif /* _ICE_COMMON_COMPAT_H_ */
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