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