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93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause */
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/* Copyright (c) 2021, 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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/**
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* @file iavf_txrx_common.h
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* @brief Tx/Rx hotpath functions common to legacy and iflib
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*
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* Contains implementations for functions used in the hotpath for both the
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* legacy and iflib driver implementations.
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*/
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#ifndef _IAVF_TXRX_COMMON_H_
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#define _IAVF_TXRX_COMMON_H_
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#include "iavf_iflib.h"
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static inline int iavf_ptype_to_hash(u8 ptype);
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/**
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* iavf_ptype_to_hash - parse the packet type
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* @ptype: packet type
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*
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* Determine the appropriate hash for a given packet type
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*
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* @returns the M_HASHTYPE_* value for the given packet type.
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*/
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static inline int
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iavf_ptype_to_hash(u8 ptype)
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{
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struct iavf_rx_ptype_decoded decoded;
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decoded = decode_rx_desc_ptype(ptype);
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if (!decoded.known)
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return M_HASHTYPE_OPAQUE;
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if (decoded.outer_ip == IAVF_RX_PTYPE_OUTER_L2)
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return M_HASHTYPE_OPAQUE;
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/* Note: anything that gets to this point is IP */
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if (decoded.outer_ip_ver == IAVF_RX_PTYPE_OUTER_IPV6) {
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switch (decoded.inner_prot) {
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case IAVF_RX_PTYPE_INNER_PROT_TCP:
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return M_HASHTYPE_RSS_TCP_IPV6;
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case IAVF_RX_PTYPE_INNER_PROT_UDP:
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return M_HASHTYPE_RSS_UDP_IPV6;
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default:
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return M_HASHTYPE_RSS_IPV6;
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}
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}
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if (decoded.outer_ip_ver == IAVF_RX_PTYPE_OUTER_IPV4) {
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switch (decoded.inner_prot) {
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case IAVF_RX_PTYPE_INNER_PROT_TCP:
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return M_HASHTYPE_RSS_TCP_IPV4;
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case IAVF_RX_PTYPE_INNER_PROT_UDP:
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return M_HASHTYPE_RSS_UDP_IPV4;
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default:
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return M_HASHTYPE_RSS_IPV4;
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}
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}
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/* We should never get here! */
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return M_HASHTYPE_OPAQUE;
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}
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#endif /* _IAVF_TXRX_COMMON_H_ */
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