freebsd-nq/sys/dev/ice/ice_rss.h
Eric Joyner d08b8680e1 ice(4): Update to version 0.28.1-k
This updates the driver to align with the version included in
the "Intel Ethernet Adapter Complete Driver Pack", version 25.6.

There are no major functional changes; this mostly contains
bug fixes and changes to prepare for new features. This version
of the driver uses the previously committed ice_ddp package
1.3.19.0.

Signed-off-by: Eric Joyner <erj@FreeBSD.org>

Tested by:	jeffrey.e.pieper@intel.com
Sponsored by:	Intel Corporation
Differential Revision:	https://reviews.freebsd.org/D28640
2021-03-05 17:33:39 -08:00

118 lines
4.6 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause */
/* Copyright (c) 2021, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*$FreeBSD$*/
/**
* @file ice_rss.h
* @brief default RSS values if kernel RSS is not enabled
*
* This header includes default definitions for RSS functionality if the
* kernel RSS interface is not enabled. This allows main driver code to avoid
* having to check the RSS ifdef throughout, but instead just use the RSS
* definitions, as they will fall back to these defaults when the kernel
* interface is disabled.
*/
#ifndef _ICE_RSS_H_
#define _ICE_RSS_H_
#ifdef RSS
// We have the kernel RSS interface available
#include <net/rss_config.h>
/* Make sure our key size buffer has enough space to store the kernel RSS key */
CTASSERT(ICE_AQC_GET_SET_RSS_KEY_DATA_RSS_KEY_SIZE >= RSS_KEYSIZE);
#else
/* The kernel RSS interface is not enabled. Use suitable defaults for the RSS
* configuration functions.
*
* The RSS hash key will be a pre-generated random key.
* The number of buckets will just match the number of CPUs.
* The lookup table will be assigned using round-robin with no indirection.
* The RSS hash configuration will be set to suitable defaults.
*/
#define RSS_HASHTYPE_RSS_IPV4 (1 << 1) /* IPv4 2-tuple */
#define RSS_HASHTYPE_RSS_TCP_IPV4 (1 << 2) /* TCPv4 4-tuple */
#define RSS_HASHTYPE_RSS_IPV6 (1 << 3) /* IPv6 2-tuple */
#define RSS_HASHTYPE_RSS_TCP_IPV6 (1 << 4) /* TCPv6 4-tuple */
#define RSS_HASHTYPE_RSS_IPV6_EX (1 << 5) /* IPv6 2-tuple + ext hdrs */
#define RSS_HASHTYPE_RSS_TCP_IPV6_EX (1 << 6) /* TCPv6 4-tiple + ext hdrs */
#define RSS_HASHTYPE_RSS_UDP_IPV4 (1 << 7) /* IPv4 UDP 4-tuple */
#define RSS_HASHTYPE_RSS_UDP_IPV6 (1 << 9) /* IPv6 UDP 4-tuple */
#define RSS_HASHTYPE_RSS_UDP_IPV6_EX (1 << 10) /* IPv6 UDP 4-tuple + ext hdrs */
#define ICE_DEFAULT_RSS_HASH_CONFIG \
((u_int)(RSS_HASHTYPE_RSS_IPV4 | \
RSS_HASHTYPE_RSS_TCP_IPV4 | \
RSS_HASHTYPE_RSS_UDP_IPV4 | \
RSS_HASHTYPE_RSS_IPV6 | \
RSS_HASHTYPE_RSS_TCP_IPV6 | \
RSS_HASHTYPE_RSS_UDP_IPV6))
#define rss_getkey(key) ice_get_default_rss_key(key)
#define rss_getnumbuckets() (mp_ncpus)
#define rss_get_indirection_to_bucket(index) (index)
#define rss_gethashconfig() (ICE_DEFAULT_RSS_HASH_CONFIG)
/**
* rss_hash2bucket - Determine the bucket for a given hash value
* @hash_val: the hash value to use
* @hash_type: the type of the hash
* @bucket_id: on success, updated with the bucket
*
* This function simply verifies that the hash type is known. If it is, then
* we forward the hash value directly as the bucket id. If the hash type is
* unknown, we return -1.
*
* This is the simplest mechanism for converting a hash value into a bucket,
* and does not support any form of indirection table.
*/
static inline int
rss_hash2bucket(uint32_t hash_val, uint32_t hash_type, uint32_t *bucket_id)
{
switch (hash_type) {
case M_HASHTYPE_RSS_IPV4:
case M_HASHTYPE_RSS_TCP_IPV4:
case M_HASHTYPE_RSS_UDP_IPV4:
case M_HASHTYPE_RSS_IPV6:
case M_HASHTYPE_RSS_TCP_IPV6:
case M_HASHTYPE_RSS_UDP_IPV6:
*bucket_id = hash_val;
return (0);
default:
return (-1);
}
}
#endif /* !RSS */
#endif /* _ICE_COMMON_COMPAT_H_ */