1*ca853deeSEric Joyner /* SPDX-License-Identifier: BSD-3-Clause */ 2*ca853deeSEric Joyner /* Copyright (c) 2021, Intel Corporation 3*ca853deeSEric Joyner * All rights reserved. 4*ca853deeSEric Joyner * 5*ca853deeSEric Joyner * Redistribution and use in source and binary forms, with or without 6*ca853deeSEric Joyner * modification, are permitted provided that the following conditions are met: 7*ca853deeSEric Joyner * 8*ca853deeSEric Joyner * 1. Redistributions of source code must retain the above copyright notice, 9*ca853deeSEric Joyner * this list of conditions and the following disclaimer. 10*ca853deeSEric Joyner * 11*ca853deeSEric Joyner * 2. Redistributions in binary form must reproduce the above copyright 12*ca853deeSEric Joyner * notice, this list of conditions and the following disclaimer in the 13*ca853deeSEric Joyner * documentation and/or other materials provided with the distribution. 14*ca853deeSEric Joyner * 15*ca853deeSEric Joyner * 3. Neither the name of the Intel Corporation nor the names of its 16*ca853deeSEric Joyner * contributors may be used to endorse or promote products derived from 17*ca853deeSEric Joyner * this software without specific prior written permission. 18*ca853deeSEric Joyner * 19*ca853deeSEric Joyner * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20*ca853deeSEric Joyner * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21*ca853deeSEric Joyner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22*ca853deeSEric Joyner * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 23*ca853deeSEric Joyner * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*ca853deeSEric Joyner * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*ca853deeSEric Joyner * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*ca853deeSEric Joyner * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*ca853deeSEric Joyner * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*ca853deeSEric Joyner * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*ca853deeSEric Joyner * POSSIBILITY OF SUCH DAMAGE. 30*ca853deeSEric Joyner */ 31*ca853deeSEric Joyner /*$FreeBSD$*/ 32*ca853deeSEric Joyner 33*ca853deeSEric Joyner /** 34*ca853deeSEric Joyner * @file iavf_txrx_common.h 35*ca853deeSEric Joyner * @brief Tx/Rx hotpath functions common to legacy and iflib 36*ca853deeSEric Joyner * 37*ca853deeSEric Joyner * Contains implementations for functions used in the hotpath for both the 38*ca853deeSEric Joyner * legacy and iflib driver implementations. 39*ca853deeSEric Joyner */ 40*ca853deeSEric Joyner #ifndef _IAVF_TXRX_COMMON_H_ 41*ca853deeSEric Joyner #define _IAVF_TXRX_COMMON_H_ 42*ca853deeSEric Joyner 43*ca853deeSEric Joyner #include "iavf_iflib.h" 44*ca853deeSEric Joyner 45*ca853deeSEric Joyner static inline int iavf_ptype_to_hash(u8 ptype); 46*ca853deeSEric Joyner 47*ca853deeSEric Joyner /** 48*ca853deeSEric Joyner * iavf_ptype_to_hash - parse the packet type 49*ca853deeSEric Joyner * @ptype: packet type 50*ca853deeSEric Joyner * 51*ca853deeSEric Joyner * Determine the appropriate hash for a given packet type 52*ca853deeSEric Joyner * 53*ca853deeSEric Joyner * @returns the M_HASHTYPE_* value for the given packet type. 54*ca853deeSEric Joyner */ 55*ca853deeSEric Joyner static inline int 56*ca853deeSEric Joyner iavf_ptype_to_hash(u8 ptype) 57*ca853deeSEric Joyner { 58*ca853deeSEric Joyner struct iavf_rx_ptype_decoded decoded; 59*ca853deeSEric Joyner 60*ca853deeSEric Joyner decoded = decode_rx_desc_ptype(ptype); 61*ca853deeSEric Joyner 62*ca853deeSEric Joyner if (!decoded.known) 63*ca853deeSEric Joyner return M_HASHTYPE_OPAQUE; 64*ca853deeSEric Joyner 65*ca853deeSEric Joyner if (decoded.outer_ip == IAVF_RX_PTYPE_OUTER_L2) 66*ca853deeSEric Joyner return M_HASHTYPE_OPAQUE; 67*ca853deeSEric Joyner 68*ca853deeSEric Joyner /* Note: anything that gets to this point is IP */ 69*ca853deeSEric Joyner if (decoded.outer_ip_ver == IAVF_RX_PTYPE_OUTER_IPV6) { 70*ca853deeSEric Joyner switch (decoded.inner_prot) { 71*ca853deeSEric Joyner case IAVF_RX_PTYPE_INNER_PROT_TCP: 72*ca853deeSEric Joyner return M_HASHTYPE_RSS_TCP_IPV6; 73*ca853deeSEric Joyner case IAVF_RX_PTYPE_INNER_PROT_UDP: 74*ca853deeSEric Joyner return M_HASHTYPE_RSS_UDP_IPV6; 75*ca853deeSEric Joyner default: 76*ca853deeSEric Joyner return M_HASHTYPE_RSS_IPV6; 77*ca853deeSEric Joyner } 78*ca853deeSEric Joyner } 79*ca853deeSEric Joyner if (decoded.outer_ip_ver == IAVF_RX_PTYPE_OUTER_IPV4) { 80*ca853deeSEric Joyner switch (decoded.inner_prot) { 81*ca853deeSEric Joyner case IAVF_RX_PTYPE_INNER_PROT_TCP: 82*ca853deeSEric Joyner return M_HASHTYPE_RSS_TCP_IPV4; 83*ca853deeSEric Joyner case IAVF_RX_PTYPE_INNER_PROT_UDP: 84*ca853deeSEric Joyner return M_HASHTYPE_RSS_UDP_IPV4; 85*ca853deeSEric Joyner default: 86*ca853deeSEric Joyner return M_HASHTYPE_RSS_IPV4; 87*ca853deeSEric Joyner } 88*ca853deeSEric Joyner } 89*ca853deeSEric Joyner /* We should never get here! */ 90*ca853deeSEric Joyner return M_HASHTYPE_OPAQUE; 91*ca853deeSEric Joyner } 92*ca853deeSEric Joyner 93*ca853deeSEric Joyner #endif /* _IAVF_TXRX_COMMON_H_ */ 94