sys/dev/ice/ice_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2 /*  Copyright (c) 2020, Intel Corporation
   3  *  All rights reserved.
   4  *
   5  *  Redistribution and use in source and binary forms, with or without
   6  *  modification, are permitted provided that the following conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above copyright notice,
   9  *      this list of conditions and the following disclaimer.
  10  *
  11  *   2. Redistributions in binary form must reproduce the above copyright
  12  *      notice, this list of conditions and the following disclaimer in the
  13  *      documentation and/or other materials provided with the distribution.
  14  *
  15  *   3. Neither the name of the Intel Corporation nor the names of its
  16  *      contributors may be used to endorse or promote products derived from
  17  *      this software without specific prior written permission.
  18  *
  19  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  *  POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 /*$FreeBSD$*/
  32
  33 #include "ice_common.h"
  34 #include "ice_flow.h"
  35
  36 /* Size of known protocol header fields */
  37 #define ICE_FLOW_FLD_SZ_ETH_TYPE        2
  38 #define ICE_FLOW_FLD_SZ_VLAN            2
  39 #define ICE_FLOW_FLD_SZ_IPV4_ADDR       4
  40 #define ICE_FLOW_FLD_SZ_IPV6_ADDR       16
  41 #define ICE_FLOW_FLD_SZ_IP_DSCP         1
  42 #define ICE_FLOW_FLD_SZ_IP_TTL          1
  43 #define ICE_FLOW_FLD_SZ_IP_PROT         1
  44 #define ICE_FLOW_FLD_SZ_PORT            2
  45 #define ICE_FLOW_FLD_SZ_TCP_FLAGS       1
  46 #define ICE_FLOW_FLD_SZ_ICMP_TYPE       1
  47 #define ICE_FLOW_FLD_SZ_ICMP_CODE       1
  48 #define ICE_FLOW_FLD_SZ_ARP_OPER        2
  49 #define ICE_FLOW_FLD_SZ_GRE_KEYID       4
  50
  51 /* Describe properties of a protocol header field */
  52 struct ice_flow_field_info {
  53         enum ice_flow_seg_hdr hdr;
  54         s16 off;        /* Offset from start of a protocol header, in bits */
  55         u16 size;       /* Size of fields in bits */
  56 };
  57
  58 #define ICE_FLOW_FLD_INFO(_hdr, _offset_bytes, _size_bytes) { \
  59         .hdr = _hdr, \
  60         .off = (_offset_bytes) * BITS_PER_BYTE, \
  61         .size = (_size_bytes) * BITS_PER_BYTE, \
  62 }
  63
  64 /* Table containing properties of supported protocol header fields */
  65 static const
  66 struct ice_flow_field_info ice_flds_info[ICE_FLOW_FIELD_IDX_MAX] = {
  67         /* Ether */
  68         /* ICE_FLOW_FIELD_IDX_ETH_DA */
  69         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ETH, 0, ETH_ALEN),
  70         /* ICE_FLOW_FIELD_IDX_ETH_SA */
  71         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ETH, ETH_ALEN, ETH_ALEN),
  72         /* ICE_FLOW_FIELD_IDX_S_VLAN */
  73         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_VLAN, 12, ICE_FLOW_FLD_SZ_VLAN),
  74         /* ICE_FLOW_FIELD_IDX_C_VLAN */
  75         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_VLAN, 14, ICE_FLOW_FLD_SZ_VLAN),
  76         /* ICE_FLOW_FIELD_IDX_ETH_TYPE */
  77         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ETH, 0, ICE_FLOW_FLD_SZ_ETH_TYPE),
  78         /* IPv4 / IPv6 */
  79         /* ICE_FLOW_FIELD_IDX_IPV4_DSCP */
  80         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV4, 1, ICE_FLOW_FLD_SZ_IP_DSCP),
  81         /* ICE_FLOW_FIELD_IDX_IPV6_DSCP */
  82         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV6, 0, ICE_FLOW_FLD_SZ_IP_DSCP),
  83         /* ICE_FLOW_FIELD_IDX_IPV4_TTL */
  84         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_NONE, 8, ICE_FLOW_FLD_SZ_IP_TTL),
  85         /* ICE_FLOW_FIELD_IDX_IPV4_PROT */
  86         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_NONE, 9, ICE_FLOW_FLD_SZ_IP_PROT),
  87         /* ICE_FLOW_FIELD_IDX_IPV6_TTL */
  88         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_NONE, 7, ICE_FLOW_FLD_SZ_IP_TTL),
  89         /* ICE_FLOW_FIELD_IDX_IPV4_PROT */
  90         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_NONE, 6, ICE_FLOW_FLD_SZ_IP_PROT),
  91         /* ICE_FLOW_FIELD_IDX_IPV4_SA */
  92         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV4, 12, ICE_FLOW_FLD_SZ_IPV4_ADDR),
  93         /* ICE_FLOW_FIELD_IDX_IPV4_DA */
  94         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV4, 16, ICE_FLOW_FLD_SZ_IPV4_ADDR),
  95         /* ICE_FLOW_FIELD_IDX_IPV6_SA */
  96         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV6, 8, ICE_FLOW_FLD_SZ_IPV6_ADDR),
  97         /* ICE_FLOW_FIELD_IDX_IPV6_DA */
  98         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_IPV6, 24, ICE_FLOW_FLD_SZ_IPV6_ADDR),
  99         /* Transport */
 100         /* ICE_FLOW_FIELD_IDX_TCP_SRC_PORT */
 101         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_TCP, 0, ICE_FLOW_FLD_SZ_PORT),
 102         /* ICE_FLOW_FIELD_IDX_TCP_DST_PORT */
 103         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_TCP, 2, ICE_FLOW_FLD_SZ_PORT),
 104         /* ICE_FLOW_FIELD_IDX_UDP_SRC_PORT */
 105         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_UDP, 0, ICE_FLOW_FLD_SZ_PORT),
 106         /* ICE_FLOW_FIELD_IDX_UDP_DST_PORT */
 107         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_UDP, 2, ICE_FLOW_FLD_SZ_PORT),
 108         /* ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT */
 109         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_SCTP, 0, ICE_FLOW_FLD_SZ_PORT),
 110         /* ICE_FLOW_FIELD_IDX_SCTP_DST_PORT */
 111         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_SCTP, 2, ICE_FLOW_FLD_SZ_PORT),
 112         /* ICE_FLOW_FIELD_IDX_TCP_FLAGS */
 113         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_TCP, 13, ICE_FLOW_FLD_SZ_TCP_FLAGS),
 114         /* ARP */
 115         /* ICE_FLOW_FIELD_IDX_ARP_SIP */
 116         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ARP, 14, ICE_FLOW_FLD_SZ_IPV4_ADDR),
 117         /* ICE_FLOW_FIELD_IDX_ARP_DIP */
 118         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ARP, 24, ICE_FLOW_FLD_SZ_IPV4_ADDR),
 119         /* ICE_FLOW_FIELD_IDX_ARP_SHA */
 120         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ARP, 8, ETH_ALEN),
 121         /* ICE_FLOW_FIELD_IDX_ARP_DHA */
 122         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ARP, 18, ETH_ALEN),
 123         /* ICE_FLOW_FIELD_IDX_ARP_OP */
 124         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ARP, 6, ICE_FLOW_FLD_SZ_ARP_OPER),
 125         /* ICMP */
 126         /* ICE_FLOW_FIELD_IDX_ICMP_TYPE */
 127         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ICMP, 0, ICE_FLOW_FLD_SZ_ICMP_TYPE),
 128         /* ICE_FLOW_FIELD_IDX_ICMP_CODE */
 129         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_ICMP, 1, ICE_FLOW_FLD_SZ_ICMP_CODE),
 130         /* GRE */
 131         /* ICE_FLOW_FIELD_IDX_GRE_KEYID */
 132         ICE_FLOW_FLD_INFO(ICE_FLOW_SEG_HDR_GRE, 12, ICE_FLOW_FLD_SZ_GRE_KEYID),
 133 };
 134
 135 /* Bitmaps indicating relevant packet types for a particular protocol header
 136  *
 137  * Packet types for packets with an Outer/First/Single MAC header
 138  */
 139 static const u32 ice_ptypes_mac_ofos[] = {
 140         0xFDC00846, 0xBFBF7F7E, 0xF70001DF, 0xFEFDFDFB,
 141         0x0000077E, 0x00000000, 0x00000000, 0x00000000,
 142         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 143         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 144         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 145         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 146         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 147         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 148 };
 149
 150 /* Packet types for packets with an Innermost/Last MAC VLAN header */
 151 static const u32 ice_ptypes_macvlan_il[] = {
 152         0x00000000, 0xBC000000, 0x000001DF, 0xF0000000,
 153         0x0000077E, 0x00000000, 0x00000000, 0x00000000,
 154         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 155         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 156         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 157         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 158         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 159         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 160 };
 161
 162 /* Packet types for packets with an Outer/First/Single IPv4 header, does NOT
 163  * include IPV4 other PTYPEs
 164  */
 165 static const u32 ice_ptypes_ipv4_ofos[] = {
 166         0x1DC00000, 0x04000800, 0x00000000, 0x00000000,
 167         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 168         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 169         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 170         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 171         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 172         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 173         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 174 };
 175
 176 /* Packet types for packets with an Outer/First/Single IPv4 header, includes
 177  * IPV4 other PTYPEs
 178  */
 179 static const u32 ice_ptypes_ipv4_ofos_all[] = {
 180         0x1DC00000, 0x04000800, 0x00000000, 0x00000000,
 181         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 182         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 183         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 184         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 185         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 186         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 187         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 188 };
 189
 190 /* Packet types for packets with an Innermost/Last IPv4 header */
 191 static const u32 ice_ptypes_ipv4_il[] = {
 192         0xE0000000, 0xB807700E, 0x80000003, 0xE01DC03B,
 193         0x0000000E, 0x00000000, 0x00000000, 0x00000000,
 194         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 195         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 196         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 197         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 198         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 199         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 200 };
 201
 202 /* Packet types for packets with an Outer/First/Single IPv6 header, does NOT
 203  * include IVP6 other PTYPEs
 204  */
 205 static const u32 ice_ptypes_ipv6_ofos[] = {
 206         0x00000000, 0x00000000, 0x77000000, 0x10002000,
 207         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 208         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 209         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 210         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 211         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 212         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 213         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 214 };
 215
 216 /* Packet types for packets with an Outer/First/Single IPv6 header, includes
 217  * IPV6 other PTYPEs
 218  */
 219 static const u32 ice_ptypes_ipv6_ofos_all[] = {
 220         0x00000000, 0x00000000, 0x77000000, 0x10002000,
 221         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 222         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 223         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 224         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 225         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 226         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 227         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 228 };
 229
 230 /* Packet types for packets with an Innermost/Last IPv6 header */
 231 static const u32 ice_ptypes_ipv6_il[] = {
 232         0x00000000, 0x03B80770, 0x000001DC, 0x0EE00000,
 233         0x00000770, 0x00000000, 0x00000000, 0x00000000,
 234         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 235         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 236         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 237         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 238         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 239         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 240 };
 241
 242 /* Packet types for packets with an Outer/First/Single IPv4 header - no L4 */
 243 static const u32 ice_ipv4_ofos_no_l4[] = {
 244         0x10C00000, 0x04000800, 0x00000000, 0x00000000,
 245         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 246         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 247         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 248         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 249         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 250         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 251         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 252 };
 253
 254 /* Packet types for packets with an Innermost/Last IPv4 header - no L4 */
 255 static const u32 ice_ipv4_il_no_l4[] = {
 256         0x60000000, 0x18043008, 0x80000002, 0x6010c021,
 257         0x00000008, 0x00000000, 0x00000000, 0x00000000,
 258         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 259         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 260         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 261         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 262         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 263         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 264 };
 265
 266 /* Packet types for packets with an Outer/First/Single IPv6 header - no L4 */
 267 static const u32 ice_ipv6_ofos_no_l4[] = {
 268         0x00000000, 0x00000000, 0x43000000, 0x10002000,
 269         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 270         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 271         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 272         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 273         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 274         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 275         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 276 };
 277
 278 /* Packet types for packets with an Innermost/Last IPv6 header - no L4 */
 279 static const u32 ice_ipv6_il_no_l4[] = {
 280         0x00000000, 0x02180430, 0x0000010c, 0x086010c0,
 281         0x00000430, 0x00000000, 0x00000000, 0x00000000,
 282         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 283         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 284         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 285         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 286         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 287         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 288 };
 289
 290 /* Packet types for packets with an Outermost/First ARP header */
 291 static const u32 ice_ptypes_arp_of[] = {
 292         0x00000800, 0x00000000, 0x00000000, 0x00000000,
 293         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 294         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 295         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 296         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 297         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 298         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 299         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 300 };
 301
 302 /* UDP Packet types for non-tunneled packets or tunneled
 303  * packets with inner UDP.
 304  */
 305 static const u32 ice_ptypes_udp_il[] = {
 306         0x81000000, 0x20204040, 0x04000010, 0x80810102,
 307         0x00000040, 0x00000000, 0x00000000, 0x00000000,
 308         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 309         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 310         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 311         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 312         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 313         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 314 };
 315
 316 /* Packet types for packets with an Innermost/Last TCP header */
 317 static const u32 ice_ptypes_tcp_il[] = {
 318         0x04000000, 0x80810102, 0x10000040, 0x02040408,
 319         0x00000102, 0x00000000, 0x00000000, 0x00000000,
 320         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 321         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 322         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 323         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 324         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 325         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 326 };
 327
 328 /* Packet types for packets with an Innermost/Last SCTP header */
 329 static const u32 ice_ptypes_sctp_il[] = {
 330         0x08000000, 0x01020204, 0x20000081, 0x04080810,
 331         0x00000204, 0x00000000, 0x00000000, 0x00000000,
 332         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 333         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 334         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 335         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 336         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 337         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 338 };
 339
 340 /* Packet types for packets with an Outermost/First ICMP header */
 341 static const u32 ice_ptypes_icmp_of[] = {
 342         0x10000000, 0x00000000, 0x00000000, 0x00000000,
 343         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 344         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 345         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 346         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 347         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 348         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 349         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 350 };
 351
 352 /* Packet types for packets with an Innermost/Last ICMP header */
 353 static const u32 ice_ptypes_icmp_il[] = {
 354         0x00000000, 0x02040408, 0x40000102, 0x08101020,
 355         0x00000408, 0x00000000, 0x00000000, 0x00000000,
 356         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 357         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 358         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 359         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 360         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 361         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 362 };
 363
 364 /* Packet types for packets with an Outermost/First GRE header */
 365 static const u32 ice_ptypes_gre_of[] = {
 366         0x00000000, 0xBFBF7800, 0x000001DF, 0xFEFDE000,
 367         0x0000017E, 0x00000000, 0x00000000, 0x00000000,
 368         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 369         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 370         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 371         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 372         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 373         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 374 };
 375
 376 /* Packet types for packets with an Innermost/Last MAC header */
 377 static const u32 ice_ptypes_mac_il[] = {
 378         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 379         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 380         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 381         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 382         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 383         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 384         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 385         0x00000000, 0x00000000, 0x00000000, 0x00000000,
 386 };
 387
 388 /* Manage parameters and info. used during the creation of a flow profile */
 389 struct ice_flow_prof_params {
 390         enum ice_block blk;
 391         u16 entry_length; /* # of bytes formatted entry will require */
 392         u8 es_cnt;
 393         struct ice_flow_prof *prof;
 394
 395         /* For ACL, the es[0] will have the data of ICE_RX_MDID_PKT_FLAGS_15_0
 396          * This will give us the direction flags.
 397          */
 398         struct ice_fv_word es[ICE_MAX_FV_WORDS];
 399         ice_declare_bitmap(ptypes, ICE_FLOW_PTYPE_MAX);
 400 };
 401
 402 #define ICE_FLOW_SEG_HDRS_L3_MASK       \
 403         (ICE_FLOW_SEG_HDR_IPV4 | ICE_FLOW_SEG_HDR_IPV6 | \
 404          ICE_FLOW_SEG_HDR_ARP)
 405 #define ICE_FLOW_SEG_HDRS_L4_MASK       \
 406         (ICE_FLOW_SEG_HDR_ICMP | ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_UDP | \
 407          ICE_FLOW_SEG_HDR_SCTP)
 408 /* mask for L4 protocols that are NOT part of IPV4/6 OTHER PTYPE groups */
 409 #define ICE_FLOW_SEG_HDRS_L4_MASK_NO_OTHER      \
 410         (ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_SCTP)
 411
 412 /**
 413  * ice_flow_val_hdrs - validates packet segments for valid protocol headers
 414  * @segs: array of one or more packet segments that describe the flow
 415  * @segs_cnt: number of packet segments provided
 416  */
 417 static enum ice_status
 418 ice_flow_val_hdrs(struct ice_flow_seg_info *segs, u8 segs_cnt)
 419 {
 420         u8 i;
 421
 422         for (i = 0; i < segs_cnt; i++) {
 423                 /* Multiple L3 headers */
 424                 if (segs[i].hdrs & ICE_FLOW_SEG_HDRS_L3_MASK &&
 425                     !ice_is_pow2(segs[i].hdrs & ICE_FLOW_SEG_HDRS_L3_MASK))
 426                         return ICE_ERR_PARAM;
 427
 428                 /* Multiple L4 headers */
 429                 if (segs[i].hdrs & ICE_FLOW_SEG_HDRS_L4_MASK &&
 430                     !ice_is_pow2(segs[i].hdrs & ICE_FLOW_SEG_HDRS_L4_MASK))
 431                         return ICE_ERR_PARAM;
 432         }
 433
 434         return ICE_SUCCESS;
 435 }
 436
 437 /**
 438  * ice_flow_proc_seg_hdrs - process protocol headers present in pkt segments
 439  * @params: information about the flow to be processed
 440  *
 441  * This function identifies the packet types associated with the protocol
 442  * headers being present in packet segments of the specified flow profile.
 443  */
 444 static enum ice_status
 445 ice_flow_proc_seg_hdrs(struct ice_flow_prof_params *params)
 446 {
 447         struct ice_flow_prof *prof;
 448         u8 i;
 449
 450         ice_memset(params->ptypes, 0xff, sizeof(params->ptypes),
 451                    ICE_NONDMA_MEM);
 452
 453         prof = params->prof;
 454
 455         for (i = 0; i < params->prof->segs_cnt; i++) {
 456                 const ice_bitmap_t *src;
 457                 u32 hdrs;
 458
 459                 hdrs = prof->segs[i].hdrs;
 460
 461                 if (hdrs & ICE_FLOW_SEG_HDR_ETH) {
 462                         src = !i ? (const ice_bitmap_t *)ice_ptypes_mac_ofos :
 463                                 (const ice_bitmap_t *)ice_ptypes_mac_il;
 464                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 465                                        ICE_FLOW_PTYPE_MAX);
 466                 }
 467
 468                 if (i && hdrs & ICE_FLOW_SEG_HDR_VLAN) {
 469                         src = (const ice_bitmap_t *)ice_ptypes_macvlan_il;
 470                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 471                                        ICE_FLOW_PTYPE_MAX);
 472                 }
 473
 474                 if (!i && hdrs & ICE_FLOW_SEG_HDR_ARP) {
 475                         ice_and_bitmap(params->ptypes, params->ptypes,
 476                                        (const ice_bitmap_t *)ice_ptypes_arp_of,
 477                                        ICE_FLOW_PTYPE_MAX);
 478                 }
 479
 480                 if ((hdrs & ICE_FLOW_SEG_HDR_IPV4) &&
 481                     (hdrs & ICE_FLOW_SEG_HDR_IPV_OTHER)) {
 482                         src = i ?
 483                                 (const ice_bitmap_t *)ice_ptypes_ipv4_il :
 484                                 (const ice_bitmap_t *)ice_ptypes_ipv4_ofos_all;
 485                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 486                                        ICE_FLOW_PTYPE_MAX);
 487                 } else if ((hdrs & ICE_FLOW_SEG_HDR_IPV6) &&
 488                            (hdrs & ICE_FLOW_SEG_HDR_IPV_OTHER)) {
 489                         src = i ?
 490                                 (const ice_bitmap_t *)ice_ptypes_ipv6_il :
 491                                 (const ice_bitmap_t *)ice_ptypes_ipv6_ofos_all;
 492                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 493                                        ICE_FLOW_PTYPE_MAX);
 494                 } else if ((hdrs & ICE_FLOW_SEG_HDR_IPV4) &&
 495                            !(hdrs & ICE_FLOW_SEG_HDRS_L4_MASK_NO_OTHER)) {
 496                         src = !i ? (const ice_bitmap_t *)ice_ipv4_ofos_no_l4 :
 497                                 (const ice_bitmap_t *)ice_ipv4_il_no_l4;
 498                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 499                                        ICE_FLOW_PTYPE_MAX);
 500                 } else if (hdrs & ICE_FLOW_SEG_HDR_IPV4) {
 501                         src = !i ? (const ice_bitmap_t *)ice_ptypes_ipv4_ofos :
 502                                 (const ice_bitmap_t *)ice_ptypes_ipv4_il;
 503                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 504                                        ICE_FLOW_PTYPE_MAX);
 505                 } else if ((hdrs & ICE_FLOW_SEG_HDR_IPV6) &&
 506                            !(hdrs & ICE_FLOW_SEG_HDRS_L4_MASK_NO_OTHER)) {
 507                         src = !i ? (const ice_bitmap_t *)ice_ipv6_ofos_no_l4 :
 508                                 (const ice_bitmap_t *)ice_ipv6_il_no_l4;
 509                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 510                                        ICE_FLOW_PTYPE_MAX);
 511                 } else if (hdrs & ICE_FLOW_SEG_HDR_IPV6) {
 512                         src = !i ? (const ice_bitmap_t *)ice_ptypes_ipv6_ofos :
 513                                 (const ice_bitmap_t *)ice_ptypes_ipv6_il;
 514                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 515                                        ICE_FLOW_PTYPE_MAX);
 516                 }
 517
 518                 if (hdrs & ICE_FLOW_SEG_HDR_UDP) {
 519                         src = (const ice_bitmap_t *)ice_ptypes_udp_il;
 520                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 521                                        ICE_FLOW_PTYPE_MAX);
 522                 } else if (hdrs & ICE_FLOW_SEG_HDR_TCP) {
 523                         ice_and_bitmap(params->ptypes, params->ptypes,
 524                                        (const ice_bitmap_t *)ice_ptypes_tcp_il,
 525                                        ICE_FLOW_PTYPE_MAX);
 526                 } else if (hdrs & ICE_FLOW_SEG_HDR_SCTP) {
 527                         src = (const ice_bitmap_t *)ice_ptypes_sctp_il;
 528                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 529                                        ICE_FLOW_PTYPE_MAX);
 530                 }
 531
 532                 if (hdrs & ICE_FLOW_SEG_HDR_ICMP) {
 533                         src = !i ? (const ice_bitmap_t *)ice_ptypes_icmp_of :
 534                                 (const ice_bitmap_t *)ice_ptypes_icmp_il;
 535                         ice_and_bitmap(params->ptypes, params->ptypes, src,
 536                                        ICE_FLOW_PTYPE_MAX);
 537                 } else if (hdrs & ICE_FLOW_SEG_HDR_GRE) {
 538                         if (!i) {
 539                                 src = (const ice_bitmap_t *)ice_ptypes_gre_of;
 540                                 ice_and_bitmap(params->ptypes, params->ptypes,
 541                                                src, ICE_FLOW_PTYPE_MAX);
 542                         }
 543                 }
 544         }
 545
 546         return ICE_SUCCESS;
 547 }
 548
 549 /**
 550  * ice_flow_xtract_fld - Create an extraction sequence entry for the given field
 551  * @hw: pointer to the HW struct
 552  * @params: information about the flow to be processed
 553  * @seg: packet segment index of the field to be extracted
 554  * @fld: ID of field to be extracted
 555  *
 556  * This function determines the protocol ID, offset, and size of the given
 557  * field. It then allocates one or more extraction sequence entries for the
 558  * given field, and fill the entries with protocol ID and offset information.
 559  */
 560 static enum ice_status
 561 ice_flow_xtract_fld(struct ice_hw *hw, struct ice_flow_prof_params *params,
 562                     u8 seg, enum ice_flow_field fld)
 563 {
 564         enum ice_flow_field sib = ICE_FLOW_FIELD_IDX_MAX;
 565         enum ice_prot_id prot_id = ICE_PROT_ID_INVAL;
 566         u8 fv_words = hw->blk[params->blk].es.fvw;
 567         struct ice_flow_fld_info *flds;
 568         u16 cnt, ese_bits, i;
 569         u16 off;
 570
 571         flds = params->prof->segs[seg].fields;
 572
 573         switch (fld) {
 574         case ICE_FLOW_FIELD_IDX_ETH_DA:
 575         case ICE_FLOW_FIELD_IDX_ETH_SA:
 576         case ICE_FLOW_FIELD_IDX_S_VLAN:
 577         case ICE_FLOW_FIELD_IDX_C_VLAN:
 578                 prot_id = seg == 0 ? ICE_PROT_MAC_OF_OR_S : ICE_PROT_MAC_IL;
 579                 break;
 580         case ICE_FLOW_FIELD_IDX_ETH_TYPE:
 581                 prot_id = seg == 0 ? ICE_PROT_ETYPE_OL : ICE_PROT_ETYPE_IL;
 582                 break;
 583         case ICE_FLOW_FIELD_IDX_IPV4_DSCP:
 584                 prot_id = seg == 0 ? ICE_PROT_IPV4_OF_OR_S : ICE_PROT_IPV4_IL;
 585                 break;
 586         case ICE_FLOW_FIELD_IDX_IPV6_DSCP:
 587                 prot_id = seg == 0 ? ICE_PROT_IPV6_OF_OR_S : ICE_PROT_IPV6_IL;
 588                 break;
 589         case ICE_FLOW_FIELD_IDX_IPV4_TTL:
 590         case ICE_FLOW_FIELD_IDX_IPV4_PROT:
 591                 prot_id = seg == 0 ? ICE_PROT_IPV4_OF_OR_S : ICE_PROT_IPV4_IL;
 592
 593                 /* TTL and PROT share the same extraction seq. entry.
 594                  * Each is considered a sibling to the other in terms of sharing
 595                  * the same extraction sequence entry.
 596                  */
 597                 if (fld == ICE_FLOW_FIELD_IDX_IPV4_TTL)
 598                         sib = ICE_FLOW_FIELD_IDX_IPV4_PROT;
 599                 else if (fld == ICE_FLOW_FIELD_IDX_IPV4_PROT)
 600                         sib = ICE_FLOW_FIELD_IDX_IPV4_TTL;
 601                 break;
 602         case ICE_FLOW_FIELD_IDX_IPV6_TTL:
 603         case ICE_FLOW_FIELD_IDX_IPV6_PROT:
 604                 prot_id = seg == 0 ? ICE_PROT_IPV6_OF_OR_S : ICE_PROT_IPV6_IL;
 605
 606                 /* TTL and PROT share the same extraction seq. entry.
 607                  * Each is considered a sibling to the other in terms of sharing
 608                  * the same extraction sequence entry.
 609                  */
 610                 if (fld == ICE_FLOW_FIELD_IDX_IPV6_TTL)
 611                         sib = ICE_FLOW_FIELD_IDX_IPV6_PROT;
 612                 else if (fld == ICE_FLOW_FIELD_IDX_IPV6_PROT)
 613                         sib = ICE_FLOW_FIELD_IDX_IPV6_TTL;
 614                 break;
 615         case ICE_FLOW_FIELD_IDX_IPV4_SA:
 616         case ICE_FLOW_FIELD_IDX_IPV4_DA:
 617                 prot_id = seg == 0 ? ICE_PROT_IPV4_OF_OR_S : ICE_PROT_IPV4_IL;
 618                 break;
 619         case ICE_FLOW_FIELD_IDX_IPV6_SA:
 620         case ICE_FLOW_FIELD_IDX_IPV6_DA:
 621                 prot_id = seg == 0 ? ICE_PROT_IPV6_OF_OR_S : ICE_PROT_IPV6_IL;
 622                 break;
 623         case ICE_FLOW_FIELD_IDX_TCP_SRC_PORT:
 624         case ICE_FLOW_FIELD_IDX_TCP_DST_PORT:
 625         case ICE_FLOW_FIELD_IDX_TCP_FLAGS:
 626                 prot_id = ICE_PROT_TCP_IL;
 627                 break;
 628         case ICE_FLOW_FIELD_IDX_UDP_SRC_PORT:
 629         case ICE_FLOW_FIELD_IDX_UDP_DST_PORT:
 630                 prot_id = ICE_PROT_UDP_IL_OR_S;
 631                 break;
 632         case ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT:
 633         case ICE_FLOW_FIELD_IDX_SCTP_DST_PORT:
 634                 prot_id = ICE_PROT_SCTP_IL;
 635                 break;
 636         case ICE_FLOW_FIELD_IDX_ARP_SIP:
 637         case ICE_FLOW_FIELD_IDX_ARP_DIP:
 638         case ICE_FLOW_FIELD_IDX_ARP_SHA:
 639         case ICE_FLOW_FIELD_IDX_ARP_DHA:
 640         case ICE_FLOW_FIELD_IDX_ARP_OP:
 641                 prot_id = ICE_PROT_ARP_OF;
 642                 break;
 643         case ICE_FLOW_FIELD_IDX_ICMP_TYPE:
 644         case ICE_FLOW_FIELD_IDX_ICMP_CODE:
 645                 /* ICMP type and code share the same extraction seq. entry */
 646                 prot_id = (params->prof->segs[seg].hdrs &
 647                            ICE_FLOW_SEG_HDR_IPV4) ?
 648                         ICE_PROT_ICMP_IL : ICE_PROT_ICMPV6_IL;
 649                 sib = fld == ICE_FLOW_FIELD_IDX_ICMP_TYPE ?
 650                         ICE_FLOW_FIELD_IDX_ICMP_CODE :
 651                         ICE_FLOW_FIELD_IDX_ICMP_TYPE;
 652                 break;
 653         case ICE_FLOW_FIELD_IDX_GRE_KEYID:
 654                 prot_id = ICE_PROT_GRE_OF;
 655                 break;
 656         default:
 657                 return ICE_ERR_NOT_IMPL;
 658         }
 659
 660         /* Each extraction sequence entry is a word in size, and extracts a
 661          * word-aligned offset from a protocol header.
 662          */
 663         ese_bits = ICE_FLOW_FV_EXTRACT_SZ * BITS_PER_BYTE;
 664
 665         flds[fld].xtrct.prot_id = prot_id;
 666         flds[fld].xtrct.off = (ice_flds_info[fld].off / ese_bits) *
 667                 ICE_FLOW_FV_EXTRACT_SZ;
 668         flds[fld].xtrct.disp = (u8)(ice_flds_info[fld].off % ese_bits);
 669         flds[fld].xtrct.idx = params->es_cnt;
 670
 671         /* Adjust the next field-entry index after accommodating the number of
 672          * entries this field consumes
 673          */
 674         cnt = DIVIDE_AND_ROUND_UP(flds[fld].xtrct.disp +
 675                                   ice_flds_info[fld].size, ese_bits);
 676
 677         /* Fill in the extraction sequence entries needed for this field */
 678         off = flds[fld].xtrct.off;
 679         for (i = 0; i < cnt; i++) {
 680                 /* Only consume an extraction sequence entry if there is no
 681                  * sibling field associated with this field or the sibling entry
 682                  * already extracts the word shared with this field.
 683                  */
 684                 if (sib == ICE_FLOW_FIELD_IDX_MAX ||
 685                     flds[sib].xtrct.prot_id == ICE_PROT_ID_INVAL ||
 686                     flds[sib].xtrct.off != off) {
 687                         u8 idx;
 688
 689                         /* Make sure the number of extraction sequence required
 690                          * does not exceed the block's capability
 691                          */
 692                         if (params->es_cnt >= fv_words)
 693                                 return ICE_ERR_MAX_LIMIT;
 694
 695                         /* some blocks require a reversed field vector layout */
 696                         if (hw->blk[params->blk].es.reverse)
 697                                 idx = fv_words - params->es_cnt - 1;
 698                         else
 699                                 idx = params->es_cnt;
 700
 701                         params->es[idx].prot_id = prot_id;
 702                         params->es[idx].off = off;
 703                         params->es_cnt++;
 704                 }
 705
 706                 off += ICE_FLOW_FV_EXTRACT_SZ;
 707         }
 708
 709         return ICE_SUCCESS;
 710 }
 711
 712 /**
 713  * ice_flow_create_xtrct_seq - Create an extraction sequence for given segments
 714  * @hw: pointer to the HW struct
 715  * @params: information about the flow to be processed
 716  *
 717  * This function iterates through all matched fields in the given segments, and
 718  * creates an extraction sequence for the fields.
 719  */
 720 static enum ice_status
 721 ice_flow_create_xtrct_seq(struct ice_hw *hw,
 722                           struct ice_flow_prof_params *params)
 723 {
 724         enum ice_status status = ICE_SUCCESS;
 725         u8 i;
 726
 727         for (i = 0; i < params->prof->segs_cnt; i++) {
 728                 u64 match = params->prof->segs[i].match;
 729                 enum ice_flow_field j;
 730
 731                 ice_for_each_set_bit(j, (ice_bitmap_t *)&match,
 732                                      ICE_FLOW_FIELD_IDX_MAX) {
 733                         status = ice_flow_xtract_fld(hw, params, i, j);
 734                         if (status)
 735                                 return status;
 736                         ice_clear_bit(j, (ice_bitmap_t *)&match);
 737                 }
 738         }
 739
 740         return status;
 741 }
 742
 743 /**
 744  * ice_flow_proc_segs - process all packet segments associated with a profile
 745  * @hw: pointer to the HW struct
 746  * @params: information about the flow to be processed
 747  */
 748 static enum ice_status
 749 ice_flow_proc_segs(struct ice_hw *hw, struct ice_flow_prof_params *params)
 750 {
 751         enum ice_status status;
 752
 753         status = ice_flow_proc_seg_hdrs(params);
 754         if (status)
 755                 return status;
 756
 757         status = ice_flow_create_xtrct_seq(hw, params);
 758         if (status)
 759                 return status;
 760
 761         switch (params->blk) {
 762         case ICE_BLK_RSS:
 763                 status = ICE_SUCCESS;
 764                 break;
 765         default:
 766                 return ICE_ERR_NOT_IMPL;
 767         }
 768
 769         return status;
 770 }
 771
 772 #define ICE_FLOW_FIND_PROF_CHK_FLDS     0x00000001
 773 #define ICE_FLOW_FIND_PROF_CHK_VSI      0x00000002
 774 #define ICE_FLOW_FIND_PROF_NOT_CHK_DIR  0x00000004
 775
 776 /**
 777  * ice_flow_find_prof_conds - Find a profile matching headers and conditions
 778  * @hw: pointer to the HW struct
 779  * @blk: classification stage
 780  * @dir: flow direction
 781  * @segs: array of one or more packet segments that describe the flow
 782  * @segs_cnt: number of packet segments provided
 783  * @vsi_handle: software VSI handle to check VSI (ICE_FLOW_FIND_PROF_CHK_VSI)
 784  * @conds: additional conditions to be checked (ICE_FLOW_FIND_PROF_CHK_*)
 785  */
 786 static struct ice_flow_prof *
 787 ice_flow_find_prof_conds(struct ice_hw *hw, enum ice_block blk,
 788                          enum ice_flow_dir dir, struct ice_flow_seg_info *segs,
 789                          u8 segs_cnt, u16 vsi_handle, u32 conds)
 790 {
 791         struct ice_flow_prof *p, *prof = NULL;
 792
 793         ice_acquire_lock(&hw->fl_profs_locks[blk]);
 794         LIST_FOR_EACH_ENTRY(p, &hw->fl_profs[blk], ice_flow_prof, l_entry)
 795                 if ((p->dir == dir || conds & ICE_FLOW_FIND_PROF_NOT_CHK_DIR) &&
 796                     segs_cnt && segs_cnt == p->segs_cnt) {
 797                         u8 i;
 798
 799                         /* Check for profile-VSI association if specified */
 800                         if ((conds & ICE_FLOW_FIND_PROF_CHK_VSI) &&
 801                             ice_is_vsi_valid(hw, vsi_handle) &&
 802                             !ice_is_bit_set(p->vsis, vsi_handle))
 803                                 continue;
 804
 805                         /* Protocol headers must be checked. Matched fields are
 806                          * checked if specified.
 807                          */
 808                         for (i = 0; i < segs_cnt; i++)
 809                                 if (segs[i].hdrs != p->segs[i].hdrs ||
 810                                     ((conds & ICE_FLOW_FIND_PROF_CHK_FLDS) &&
 811                                      segs[i].match != p->segs[i].match))
 812                                         break;
 813
 814                         /* A match is found if all segments are matched */
 815                         if (i == segs_cnt) {
 816                                 prof = p;
 817                                 break;
 818                         }
 819                 }
 820         ice_release_lock(&hw->fl_profs_locks[blk]);
 821
 822         return prof;
 823 }
 824
 825 /**
 826  * ice_flow_find_prof - Look up a profile matching headers and matched fields
 827  * @hw: pointer to the HW struct
 828  * @blk: classification stage
 829  * @dir: flow direction
 830  * @segs: array of one or more packet segments that describe the flow
 831  * @segs_cnt: number of packet segments provided
 832  */
 833 u64
 834 ice_flow_find_prof(struct ice_hw *hw, enum ice_block blk, enum ice_flow_dir dir,
 835                    struct ice_flow_seg_info *segs, u8 segs_cnt)
 836 {
 837         struct ice_flow_prof *p;
 838
 839         p = ice_flow_find_prof_conds(hw, blk, dir, segs, segs_cnt,
 840                                      ICE_MAX_VSI, ICE_FLOW_FIND_PROF_CHK_FLDS);
 841
 842         return p ? p->id : ICE_FLOW_PROF_ID_INVAL;
 843 }
 844
 845 /**
 846  * ice_flow_find_prof_id - Look up a profile with given profile ID
 847  * @hw: pointer to the HW struct
 848  * @blk: classification stage
 849  * @prof_id: unique ID to identify this flow profile
 850  */
 851 static struct ice_flow_prof *
 852 ice_flow_find_prof_id(struct ice_hw *hw, enum ice_block blk, u64 prof_id)
 853 {
 854         struct ice_flow_prof *p;
 855
 856         LIST_FOR_EACH_ENTRY(p, &hw->fl_profs[blk], ice_flow_prof, l_entry)
 857                 if (p->id == prof_id)
 858                         return p;
 859
 860         return NULL;
 861 }
 862
 863 /**
 864  * ice_flow_get_hw_prof - return the HW profile for a specific profile ID handle
 865  * @hw: pointer to the HW struct
 866  * @blk: classification stage
 867  * @prof_id: the profile ID handle
 868  * @hw_prof_id: pointer to variable to receive the HW profile ID
 869  */
 870 enum ice_status
 871 ice_flow_get_hw_prof(struct ice_hw *hw, enum ice_block blk, u64 prof_id,
 872                      u8 *hw_prof_id)
 873 {
 874         enum ice_status status = ICE_ERR_DOES_NOT_EXIST;
 875         struct ice_prof_map *map;
 876
 877         ice_acquire_lock(&hw->blk[blk].es.prof_map_lock);
 878         map = ice_search_prof_id(hw, blk, prof_id);
 879         if (map) {
 880                 *hw_prof_id = map->prof_id;
 881                 status = ICE_SUCCESS;
 882         }
 883         ice_release_lock(&hw->blk[blk].es.prof_map_lock);
 884         return status;
 885 }
 886
 887 /**
 888  * ice_flow_add_prof_sync - Add a flow profile for packet segments and fields
 889  * @hw: pointer to the HW struct
 890  * @blk: classification stage
 891  * @dir: flow direction
 892  * @prof_id: unique ID to identify this flow profile
 893  * @segs: array of one or more packet segments that describe the flow
 894  * @segs_cnt: number of packet segments provided
 895  * @acts: array of default actions
 896  * @acts_cnt: number of default actions
 897  * @prof: stores the returned flow profile added
 898  *
 899  * Assumption: the caller has acquired the lock to the profile list
 900  */
 901 static enum ice_status
 902 ice_flow_add_prof_sync(struct ice_hw *hw, enum ice_block blk,
 903                        enum ice_flow_dir dir, u64 prof_id,
 904                        struct ice_flow_seg_info *segs, u8 segs_cnt,
 905                        struct ice_flow_action *acts, u8 acts_cnt,
 906                        struct ice_flow_prof **prof)
 907 {
 908         struct ice_flow_prof_params *params;
 909         enum ice_status status;
 910         u8 i;
 911
 912         if (!prof || (acts_cnt && !acts))
 913                 return ICE_ERR_BAD_PTR;
 914
 915         params = (struct ice_flow_prof_params *)ice_malloc(hw, sizeof(*params));
 916         if (!params)
 917                 return ICE_ERR_NO_MEMORY;
 918
 919         params->prof = (struct ice_flow_prof *)
 920                 ice_malloc(hw, sizeof(*params->prof));
 921         if (!params->prof) {
 922                 status = ICE_ERR_NO_MEMORY;
 923                 goto free_params;
 924         }
 925
 926         /* initialize extraction sequence to all invalid (0xff) */
 927         for (i = 0; i < ICE_MAX_FV_WORDS; i++) {
 928                 params->es[i].prot_id = ICE_PROT_INVALID;
 929                 params->es[i].off = ICE_FV_OFFSET_INVAL;
 930         }
 931
 932         params->blk = blk;
 933         params->prof->id = prof_id;
 934         params->prof->dir = dir;
 935         params->prof->segs_cnt = segs_cnt;
 936
 937         /* Make a copy of the segments that need to be persistent in the flow
 938          * profile instance
 939          */
 940         for (i = 0; i < segs_cnt; i++)
 941                 ice_memcpy(&params->prof->segs[i], &segs[i], sizeof(*segs),
 942                            ICE_NONDMA_TO_NONDMA);
 943
 944         status = ice_flow_proc_segs(hw, params);
 945         if (status) {
 946                 ice_debug(hw, ICE_DBG_FLOW, "Error processing a flow's packet segments\n");
 947                 goto out;
 948         }
 949
 950         /* Add a HW profile for this flow profile */
 951         status = ice_add_prof(hw, blk, prof_id, (u8 *)params->ptypes,
 952                               params->es);
 953         if (status) {
 954                 ice_debug(hw, ICE_DBG_FLOW, "Error adding a HW flow profile\n");
 955                 goto out;
 956         }
 957
 958         *prof = params->prof;
 959
 960 out:
 961         if (status) {
 962                 ice_free(hw, params->prof);
 963         }
 964 free_params:
 965         ice_free(hw, params);
 966
 967         return status;
 968 }
 969
 970 /**
 971  * ice_flow_rem_prof_sync - remove a flow profile
 972  * @hw: pointer to the hardware structure
 973  * @blk: classification stage
 974  * @prof: pointer to flow profile to remove
 975  *
 976  * Assumption: the caller has acquired the lock to the profile list
 977  */
 978 static enum ice_status
 979 ice_flow_rem_prof_sync(struct ice_hw *hw, enum ice_block blk,
 980                        struct ice_flow_prof *prof)
 981 {
 982         enum ice_status status;
 983
 984         /* Remove all hardware profiles associated with this flow profile */
 985         status = ice_rem_prof(hw, blk, prof->id);
 986         if (!status) {
 987                 LIST_DEL(&prof->l_entry);
 988                 ice_free(hw, prof);
 989         }
 990
 991         return status;
 992 }
 993
 994 /**
 995  * ice_flow_assoc_vsig_vsi - associate a VSI with VSIG
 996  * @hw: pointer to the hardware structure
 997  * @blk: classification stage
 998  * @vsi_handle: software VSI handle
 999  * @vsig: target VSI group
1000  *
1001  * Assumption: the caller has already verified that the VSI to
1002  * be added has the same characteristics as the VSIG and will
1003  * thereby have access to all resources added to that VSIG.
1004  */
1005 enum ice_status
1006 ice_flow_assoc_vsig_vsi(struct ice_hw *hw, enum ice_block blk, u16 vsi_handle,
1007                         u16 vsig)
1008 {
1009         enum ice_status status;
1010
1011         if (!ice_is_vsi_valid(hw, vsi_handle) || blk >= ICE_BLK_COUNT)
1012                 return ICE_ERR_PARAM;
1013
1014         ice_acquire_lock(&hw->fl_profs_locks[blk]);
1015         status = ice_add_vsi_flow(hw, blk, ice_get_hw_vsi_num(hw, vsi_handle),
1016                                   vsig);
1017         ice_release_lock(&hw->fl_profs_locks[blk]);
1018
1019         return status;
1020 }
1021
1022 /**
1023  * ice_flow_assoc_prof - associate a VSI with a flow profile
1024  * @hw: pointer to the hardware structure
1025  * @blk: classification stage
1026  * @prof: pointer to flow profile
1027  * @vsi_handle: software VSI handle
1028  *
1029  * Assumption: the caller has acquired the lock to the profile list
1030  * and the software VSI handle has been validated
1031  */
1032 static enum ice_status
1033 ice_flow_assoc_prof(struct ice_hw *hw, enum ice_block blk,
1034                     struct ice_flow_prof *prof, u16 vsi_handle)
1035 {
1036         enum ice_status status = ICE_SUCCESS;
1037
1038         if (!ice_is_bit_set(prof->vsis, vsi_handle)) {
1039                 status = ice_add_prof_id_flow(hw, blk,
1040                                               ice_get_hw_vsi_num(hw,
1041                                                                  vsi_handle),
1042                                               prof->id);
1043                 if (!status)
1044                         ice_set_bit(vsi_handle, prof->vsis);
1045                 else
1046                         ice_debug(hw, ICE_DBG_FLOW, "HW profile add failed, %d\n",
1047                                   status);
1048         }
1049
1050         return status;
1051 }
1052
1053 /**
1054  * ice_flow_disassoc_prof - disassociate a VSI from a flow profile
1055  * @hw: pointer to the hardware structure
1056  * @blk: classification stage
1057  * @prof: pointer to flow profile
1058  * @vsi_handle: software VSI handle
1059  *
1060  * Assumption: the caller has acquired the lock to the profile list
1061  * and the software VSI handle has been validated
1062  */
1063 static enum ice_status
1064 ice_flow_disassoc_prof(struct ice_hw *hw, enum ice_block blk,
1065                        struct ice_flow_prof *prof, u16 vsi_handle)
1066 {
1067         enum ice_status status = ICE_SUCCESS;
1068
1069         if (ice_is_bit_set(prof->vsis, vsi_handle)) {
1070                 status = ice_rem_prof_id_flow(hw, blk,
1071                                               ice_get_hw_vsi_num(hw,
1072                                                                  vsi_handle),
1073                                               prof->id);
1074                 if (!status)
1075                         ice_clear_bit(vsi_handle, prof->vsis);
1076                 else
1077                         ice_debug(hw, ICE_DBG_FLOW, "HW profile remove failed, %d\n",
1078                                   status);
1079         }
1080
1081         return status;
1082 }
1083
1084 /**
1085  * ice_flow_add_prof - Add a flow profile for packet segments and matched fields
1086  * @hw: pointer to the HW struct
1087  * @blk: classification stage
1088  * @dir: flow direction
1089  * @prof_id: unique ID to identify this flow profile
1090  * @segs: array of one or more packet segments that describe the flow
1091  * @segs_cnt: number of packet segments provided
1092  * @acts: array of default actions
1093  * @acts_cnt: number of default actions
1094  * @prof: stores the returned flow profile added
1095  */
1096 static enum ice_status
1097 ice_flow_add_prof(struct ice_hw *hw, enum ice_block blk, enum ice_flow_dir dir,
1098                   u64 prof_id, struct ice_flow_seg_info *segs, u8 segs_cnt,
1099                   struct ice_flow_action *acts, u8 acts_cnt,
1100                   struct ice_flow_prof **prof)
1101 {
1102         enum ice_status status;
1103
1104         if (segs_cnt > ICE_FLOW_SEG_MAX)
1105                 return ICE_ERR_MAX_LIMIT;
1106
1107         if (!segs_cnt)
1108                 return ICE_ERR_PARAM;
1109
1110         if (!segs)
1111                 return ICE_ERR_BAD_PTR;
1112
1113         status = ice_flow_val_hdrs(segs, segs_cnt);
1114         if (status)
1115                 return status;
1116
1117         ice_acquire_lock(&hw->fl_profs_locks[blk]);
1118
1119         status = ice_flow_add_prof_sync(hw, blk, dir, prof_id, segs, segs_cnt,
1120                                         acts, acts_cnt, prof);
1121         if (!status)
1122                 LIST_ADD(&(*prof)->l_entry, &hw->fl_profs[blk]);
1123
1124         ice_release_lock(&hw->fl_profs_locks[blk]);
1125
1126         return status;
1127 }
1128
1129 /**
1130  * ice_flow_rem_prof - Remove a flow profile and all entries associated with it
1131  * @hw: pointer to the HW struct
1132  * @blk: the block for which the flow profile is to be removed
1133  * @prof_id: unique ID of the flow profile to be removed
1134  */
1135 static enum ice_status
1136 ice_flow_rem_prof(struct ice_hw *hw, enum ice_block blk, u64 prof_id)
1137 {
1138         struct ice_flow_prof *prof;
1139         enum ice_status status;
1140
1141         ice_acquire_lock(&hw->fl_profs_locks[blk]);
1142
1143         prof = ice_flow_find_prof_id(hw, blk, prof_id);
1144         if (!prof) {
1145                 status = ICE_ERR_DOES_NOT_EXIST;
1146                 goto out;
1147         }
1148
1149         /* prof becomes invalid after the call */
1150         status = ice_flow_rem_prof_sync(hw, blk, prof);
1151
1152 out:
1153         ice_release_lock(&hw->fl_profs_locks[blk]);
1154
1155         return status;
1156 }
1157
1158 /**
1159  * ice_flow_set_fld_ext - specifies locations of field from entry's input buffer
1160  * @seg: packet segment the field being set belongs to
1161  * @fld: field to be set
1162  * @field_type: type of the field
1163  * @val_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of the value to match from
1164  *           entry's input buffer
1165  * @mask_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of mask value from entry's
1166  *            input buffer
1167  * @last_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of last/upper value from
1168  *            entry's input buffer
1169  *
1170  * This helper function stores information of a field being matched, including
1171  * the type of the field and the locations of the value to match, the mask, and
1172  * the upper-bound value in the start of the input buffer for a flow entry.
1173  * This function should only be used for fixed-size data structures.
1174  *
1175  * This function also opportunistically determines the protocol headers to be
1176  * present based on the fields being set. Some fields cannot be used alone to
1177  * determine the protocol headers present. Sometimes, fields for particular
1178  * protocol headers are not matched. In those cases, the protocol headers
1179  * must be explicitly set.
1180  */
1181 static void
1182 ice_flow_set_fld_ext(struct ice_flow_seg_info *seg, enum ice_flow_field fld,
1183                      enum ice_flow_fld_match_type field_type, u16 val_loc,
1184                      u16 mask_loc, u16 last_loc)
1185 {
1186         u64 bit = BIT_ULL(fld);
1187
1188         seg->match |= bit;
1189         if (field_type == ICE_FLOW_FLD_TYPE_RANGE)
1190                 seg->range |= bit;
1191
1192         seg->fields[fld].type = field_type;
1193         seg->fields[fld].src.val = val_loc;
1194         seg->fields[fld].src.mask = mask_loc;
1195         seg->fields[fld].src.last = last_loc;
1196
1197         ICE_FLOW_SET_HDRS(seg, ice_flds_info[fld].hdr);
1198 }
1199
1200 /**
1201  * ice_flow_set_fld - specifies locations of field from entry's input buffer
1202  * @seg: packet segment the field being set belongs to
1203  * @fld: field to be set
1204  * @val_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of the value to match from
1205  *           entry's input buffer
1206  * @mask_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of mask value from entry's
1207  *            input buffer
1208  * @last_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of last/upper value from
1209  *            entry's input buffer
1210  * @range: indicate if field being matched is to be in a range
1211  *
1212  * This function specifies the locations, in the form of byte offsets from the
1213  * start of the input buffer for a flow entry, from where the value to match,
1214  * the mask value, and upper value can be extracted. These locations are then
1215  * stored in the flow profile. When adding a flow entry associated with the
1216  * flow profile, these locations will be used to quickly extract the values and
1217  * create the content of a match entry. This function should only be used for
1218  * fixed-size data structures.
1219  */
1220 static void
1221 ice_flow_set_fld(struct ice_flow_seg_info *seg, enum ice_flow_field fld,
1222                  u16 val_loc, u16 mask_loc, u16 last_loc, bool range)
1223 {
1224         enum ice_flow_fld_match_type t = range ?
1225                 ICE_FLOW_FLD_TYPE_RANGE : ICE_FLOW_FLD_TYPE_REG;
1226
1227         ice_flow_set_fld_ext(seg, fld, t, val_loc, mask_loc, last_loc);
1228 }
1229
1230 /**
1231  * ice_flow_set_fld_prefix - sets locations of prefix field from entry's buf
1232  * @seg: packet segment the field being set belongs to
1233  * @fld: field to be set
1234  * @val_loc: if not ICE_FLOW_FLD_OFF_INVAL, location of the value to match from
1235  *           entry's input buffer
1236  * @pref_loc: location of prefix value from entry's input buffer
1237  * @pref_sz: size of the location holding the prefix value
1238  *
1239  * This function specifies the locations, in the form of byte offsets from the
1240  * start of the input buffer for a flow entry, from where the value to match
1241  * and the IPv4 prefix value can be extracted. These locations are then stored
1242  * in the flow profile. When adding flow entries to the associated flow profile,
1243  * these locations can be used to quickly extract the values to create the
1244  * content of a match entry. This function should only be used for fixed-size
1245  * data structures.
1246  */
1247 void
1248 ice_flow_set_fld_prefix(struct ice_flow_seg_info *seg, enum ice_flow_field fld,
1249                         u16 val_loc, u16 pref_loc, u8 pref_sz)
1250 {
1251         /* For this type of field, the "mask" location is for the prefix value's
1252          * location and the "last" location is for the size of the location of
1253          * the prefix value.
1254          */
1255         ice_flow_set_fld_ext(seg, fld, ICE_FLOW_FLD_TYPE_PREFIX, val_loc,
1256                              pref_loc, (u16)pref_sz);
1257 }
1258
1259 #define ICE_FLOW_RSS_SEG_HDR_L3_MASKS \
1260         (ICE_FLOW_SEG_HDR_IPV4 | ICE_FLOW_SEG_HDR_IPV6)
1261
1262 #define ICE_FLOW_RSS_SEG_HDR_L4_MASKS \
1263         (ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_UDP | ICE_FLOW_SEG_HDR_SCTP)
1264
1265 #define ICE_FLOW_RSS_SEG_HDR_VAL_MASKS \
1266         (ICE_FLOW_RSS_SEG_HDR_L3_MASKS | \
1267          ICE_FLOW_RSS_SEG_HDR_L4_MASKS)
1268
1269 /**
1270  * ice_flow_set_rss_seg_info - setup packet segments for RSS
1271  * @segs: pointer to the flow field segment(s)
1272  * @hash_fields: fields to be hashed on for the segment(s)
1273  * @flow_hdr: protocol header fields within a packet segment
1274  *
1275  * Helper function to extract fields from hash bitmap and use flow
1276  * header value to set flow field segment for further use in flow
1277  * profile entry or removal.
1278  */
1279 static enum ice_status
1280 ice_flow_set_rss_seg_info(struct ice_flow_seg_info *segs, u64 hash_fields,
1281                           u32 flow_hdr)
1282 {
1283         u64 val;
1284         u8 i;
1285
1286         ice_for_each_set_bit(i, (ice_bitmap_t *)&hash_fields,
1287                              ICE_FLOW_FIELD_IDX_MAX)
1288                 ice_flow_set_fld(segs, (enum ice_flow_field)i,
1289                                  ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1290                                  ICE_FLOW_FLD_OFF_INVAL, false);
1291
1292         ICE_FLOW_SET_HDRS(segs, flow_hdr);
1293
1294         if (segs->hdrs & ~ICE_FLOW_RSS_SEG_HDR_VAL_MASKS)
1295                 return ICE_ERR_PARAM;
1296
1297         val = (u64)(segs->hdrs & ICE_FLOW_RSS_SEG_HDR_L3_MASKS);
1298         if (val && !ice_is_pow2(val))
1299                 return ICE_ERR_CFG;
1300
1301         val = (u64)(segs->hdrs & ICE_FLOW_RSS_SEG_HDR_L4_MASKS);
1302         if (val && !ice_is_pow2(val))
1303                 return ICE_ERR_CFG;
1304
1305         return ICE_SUCCESS;
1306 }
1307
1308 /**
1309  * ice_rem_vsi_rss_list - remove VSI from RSS list
1310  * @hw: pointer to the hardware structure
1311  * @vsi_handle: software VSI handle
1312  *
1313  * Remove the VSI from all RSS configurations in the list.
1314  */
1315 void ice_rem_vsi_rss_list(struct ice_hw *hw, u16 vsi_handle)
1316 {
1317         struct ice_rss_cfg *r, *tmp;
1318
1319         if (LIST_EMPTY(&hw->rss_list_head))
1320                 return;
1321
1322         ice_acquire_lock(&hw->rss_locks);
1323         LIST_FOR_EACH_ENTRY_SAFE(r, tmp, &hw->rss_list_head,
1324                                  ice_rss_cfg, l_entry)
1325                 if (ice_test_and_clear_bit(vsi_handle, r->vsis))
1326                         if (!ice_is_any_bit_set(r->vsis, ICE_MAX_VSI)) {
1327                                 LIST_DEL(&r->l_entry);
1328                                 ice_free(hw, r);
1329                         }
1330         ice_release_lock(&hw->rss_locks);
1331 }
1332
1333 /**
1334  * ice_rem_vsi_rss_cfg - remove RSS configurations associated with VSI
1335  * @hw: pointer to the hardware structure
1336  * @vsi_handle: software VSI handle
1337  *
1338  * This function will iterate through all flow profiles and disassociate
1339  * the VSI from that profile. If the flow profile has no VSIs it will
1340  * be removed.
1341  */
1342 enum ice_status ice_rem_vsi_rss_cfg(struct ice_hw *hw, u16 vsi_handle)
1343 {
1344         const enum ice_block blk = ICE_BLK_RSS;
1345         struct ice_flow_prof *p, *t;
1346         enum ice_status status = ICE_SUCCESS;
1347
1348         if (!ice_is_vsi_valid(hw, vsi_handle))
1349                 return ICE_ERR_PARAM;
1350
1351         if (LIST_EMPTY(&hw->fl_profs[blk]))
1352                 return ICE_SUCCESS;
1353
1354         ice_acquire_lock(&hw->rss_locks);
1355         LIST_FOR_EACH_ENTRY_SAFE(p, t, &hw->fl_profs[blk], ice_flow_prof,
1356                                  l_entry)
1357                 if (ice_is_bit_set(p->vsis, vsi_handle)) {
1358                         status = ice_flow_disassoc_prof(hw, blk, p, vsi_handle);
1359                         if (status)
1360                                 break;
1361
1362                         if (!ice_is_any_bit_set(p->vsis, ICE_MAX_VSI)) {
1363                                 status = ice_flow_rem_prof(hw, blk, p->id);
1364                                 if (status)
1365                                         break;
1366                         }
1367                 }
1368         ice_release_lock(&hw->rss_locks);
1369
1370         return status;
1371 }
1372
1373 /**
1374  * ice_rem_rss_list - remove RSS configuration from list
1375  * @hw: pointer to the hardware structure
1376  * @vsi_handle: software VSI handle
1377  * @prof: pointer to flow profile
1378  *
1379  * Assumption: lock has already been acquired for RSS list
1380  */
1381 static void
1382 ice_rem_rss_list(struct ice_hw *hw, u16 vsi_handle, struct ice_flow_prof *prof)
1383 {
1384         struct ice_rss_cfg *r, *tmp;
1385
1386         /* Search for RSS hash fields associated to the VSI that match the
1387          * hash configurations associated to the flow profile. If found
1388          * remove from the RSS entry list of the VSI context and delete entry.
1389          */
1390         LIST_FOR_EACH_ENTRY_SAFE(r, tmp, &hw->rss_list_head,
1391                                  ice_rss_cfg, l_entry)
1392                 if (r->hashed_flds == prof->segs[prof->segs_cnt - 1].match &&
1393                     r->packet_hdr == prof->segs[prof->segs_cnt - 1].hdrs) {
1394                         ice_clear_bit(vsi_handle, r->vsis);
1395                         if (!ice_is_any_bit_set(r->vsis, ICE_MAX_VSI)) {
1396                                 LIST_DEL(&r->l_entry);
1397                                 ice_free(hw, r);
1398                         }
1399                         return;
1400                 }
1401 }
1402
1403 /**
1404  * ice_add_rss_list - add RSS configuration to list
1405  * @hw: pointer to the hardware structure
1406  * @vsi_handle: software VSI handle
1407  * @prof: pointer to flow profile
1408  *
1409  * Assumption: lock has already been acquired for RSS list
1410  */
1411 static enum ice_status
1412 ice_add_rss_list(struct ice_hw *hw, u16 vsi_handle, struct ice_flow_prof *prof)
1413 {
1414         struct ice_rss_cfg *r, *rss_cfg;
1415
1416         LIST_FOR_EACH_ENTRY(r, &hw->rss_list_head,
1417                             ice_rss_cfg, l_entry)
1418                 if (r->hashed_flds == prof->segs[prof->segs_cnt - 1].match &&
1419                     r->packet_hdr == prof->segs[prof->segs_cnt - 1].hdrs) {
1420                         ice_set_bit(vsi_handle, r->vsis);
1421                         return ICE_SUCCESS;
1422                 }
1423
1424         rss_cfg = (struct ice_rss_cfg *)ice_malloc(hw, sizeof(*rss_cfg));
1425         if (!rss_cfg)
1426                 return ICE_ERR_NO_MEMORY;
1427
1428         rss_cfg->hashed_flds = prof->segs[prof->segs_cnt - 1].match;
1429         rss_cfg->packet_hdr = prof->segs[prof->segs_cnt - 1].hdrs;
1430         ice_set_bit(vsi_handle, rss_cfg->vsis);
1431
1432         LIST_ADD_TAIL(&rss_cfg->l_entry, &hw->rss_list_head);
1433
1434         return ICE_SUCCESS;
1435 }
1436
1437 #define ICE_FLOW_PROF_HASH_S    0
1438 #define ICE_FLOW_PROF_HASH_M    (0xFFFFFFFFULL << ICE_FLOW_PROF_HASH_S)
1439 #define ICE_FLOW_PROF_HDR_S     32
1440 #define ICE_FLOW_PROF_HDR_M     (0x3FFFFFFFULL << ICE_FLOW_PROF_HDR_S)
1441 #define ICE_FLOW_PROF_ENCAP_S   63
1442 #define ICE_FLOW_PROF_ENCAP_M   (BIT_ULL(ICE_FLOW_PROF_ENCAP_S))
1443
1444 #define ICE_RSS_OUTER_HEADERS   1
1445 #define ICE_RSS_INNER_HEADERS   2
1446
1447 /* Flow profile ID format:
1448  * [0:31] - Packet match fields
1449  * [32:62] - Protocol header
1450  * [63] - Encapsulation flag, 0 if non-tunneled, 1 if tunneled
1451  */
1452 #define ICE_FLOW_GEN_PROFID(hash, hdr, segs_cnt) \
1453         (u64)(((u64)(hash) & ICE_FLOW_PROF_HASH_M) | \
1454               (((u64)(hdr) << ICE_FLOW_PROF_HDR_S) & ICE_FLOW_PROF_HDR_M) | \
1455               ((u8)((segs_cnt) - 1) ? ICE_FLOW_PROF_ENCAP_M : 0))
1456
1457 /**
1458  * ice_add_rss_cfg_sync - add an RSS configuration
1459  * @hw: pointer to the hardware structure
1460  * @vsi_handle: software VSI handle
1461  * @hashed_flds: hash bit fields (ICE_FLOW_HASH_*) to configure
1462  * @addl_hdrs: protocol header fields
1463  * @segs_cnt: packet segment count
1464  *
1465  * Assumption: lock has already been acquired for RSS list
1466  */
1467 static enum ice_status
1468 ice_add_rss_cfg_sync(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds,
1469                      u32 addl_hdrs, u8 segs_cnt)
1470 {
1471         const enum ice_block blk = ICE_BLK_RSS;
1472         struct ice_flow_prof *prof = NULL;
1473         struct ice_flow_seg_info *segs;
1474         enum ice_status status;
1475
1476         if (!segs_cnt || segs_cnt > ICE_FLOW_SEG_MAX)
1477                 return ICE_ERR_PARAM;
1478
1479         segs = (struct ice_flow_seg_info *)ice_calloc(hw, segs_cnt,
1480                                                       sizeof(*segs));
1481         if (!segs)
1482                 return ICE_ERR_NO_MEMORY;
1483
1484         /* Construct the packet segment info from the hashed fields */
1485         status = ice_flow_set_rss_seg_info(&segs[segs_cnt - 1], hashed_flds,
1486                                            addl_hdrs);
1487         if (status)
1488                 goto exit;
1489
1490         /* Search for a flow profile that has matching headers, hash fields
1491          * and has the input VSI associated to it. If found, no further
1492          * operations required and exit.
1493          */
1494         prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt,
1495                                         vsi_handle,
1496                                         ICE_FLOW_FIND_PROF_CHK_FLDS |
1497                                         ICE_FLOW_FIND_PROF_CHK_VSI);
1498         if (prof)
1499                 goto exit;
1500
1501         /* Check if a flow profile exists with the same protocol headers and
1502          * associated with the input VSI. If so disassociate the VSI from
1503          * this profile. The VSI will be added to a new profile created with
1504          * the protocol header and new hash field configuration.
1505          */
1506         prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt,
1507                                         vsi_handle, ICE_FLOW_FIND_PROF_CHK_VSI);
1508         if (prof) {
1509                 status = ice_flow_disassoc_prof(hw, blk, prof, vsi_handle);
1510                 if (!status)
1511                         ice_rem_rss_list(hw, vsi_handle, prof);
1512                 else
1513                         goto exit;
1514
1515                 /* Remove profile if it has no VSIs associated */
1516                 if (!ice_is_any_bit_set(prof->vsis, ICE_MAX_VSI)) {
1517                         status = ice_flow_rem_prof(hw, blk, prof->id);
1518                         if (status)
1519                                 goto exit;
1520                 }
1521         }
1522
1523         /* Search for a profile that has same match fields only. If this
1524          * exists then associate the VSI to this profile.
1525          */
1526         prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt,
1527                                         vsi_handle,
1528                                         ICE_FLOW_FIND_PROF_CHK_FLDS);
1529         if (prof) {
1530                 status = ice_flow_assoc_prof(hw, blk, prof, vsi_handle);
1531                 if (!status)
1532                         status = ice_add_rss_list(hw, vsi_handle, prof);
1533                 goto exit;
1534         }
1535
1536         /* Create a new flow profile with generated profile and packet
1537          * segment information.
1538          */
1539         status = ice_flow_add_prof(hw, blk, ICE_FLOW_RX,
1540                                    ICE_FLOW_GEN_PROFID(hashed_flds,
1541                                                        segs[segs_cnt - 1].hdrs,
1542                                                        segs_cnt),
1543                                    segs, segs_cnt, NULL, 0, &prof);
1544         if (status)
1545                 goto exit;
1546
1547         status = ice_flow_assoc_prof(hw, blk, prof, vsi_handle);
1548         /* If association to a new flow profile failed then this profile can
1549          * be removed.
1550          */
1551         if (status) {
1552                 ice_flow_rem_prof(hw, blk, prof->id);
1553                 goto exit;
1554         }
1555
1556         status = ice_add_rss_list(hw, vsi_handle, prof);
1557
1558 exit:
1559         ice_free(hw, segs);
1560         return status;
1561 }
1562
1563 /**
1564  * ice_add_rss_cfg - add an RSS configuration with specified hashed fields
1565  * @hw: pointer to the hardware structure
1566  * @vsi_handle: software VSI handle
1567  * @hashed_flds: hash bit fields (ICE_FLOW_HASH_*) to configure
1568  * @addl_hdrs: protocol header fields
1569  *
1570  * This function will generate a flow profile based on fields associated with
1571  * the input fields to hash on, the flow type and use the VSI number to add
1572  * a flow entry to the profile.
1573  */
1574 enum ice_status
1575 ice_add_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds,
1576                 u32 addl_hdrs)
1577 {
1578         enum ice_status status;
1579
1580         if (hashed_flds == ICE_HASH_INVALID ||
1581             !ice_is_vsi_valid(hw, vsi_handle))
1582                 return ICE_ERR_PARAM;
1583
1584         ice_acquire_lock(&hw->rss_locks);
1585         status = ice_add_rss_cfg_sync(hw, vsi_handle, hashed_flds, addl_hdrs,
1586                                       ICE_RSS_OUTER_HEADERS);
1587         if (!status)
1588                 status = ice_add_rss_cfg_sync(hw, vsi_handle, hashed_flds,
1589                                               addl_hdrs, ICE_RSS_INNER_HEADERS);
1590         ice_release_lock(&hw->rss_locks);
1591
1592         return status;
1593 }
1594
1595 /**
1596  * ice_rem_rss_cfg_sync - remove an existing RSS configuration
1597  * @hw: pointer to the hardware structure
1598  * @vsi_handle: software VSI handle
1599  * @hashed_flds: Packet hash types (ICE_FLOW_HASH_*) to remove
1600  * @addl_hdrs: Protocol header fields within a packet segment
1601  * @segs_cnt: packet segment count
1602  *
1603  * Assumption: lock has already been acquired for RSS list
1604  */
1605 static enum ice_status
1606 ice_rem_rss_cfg_sync(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds,
1607                      u32 addl_hdrs, u8 segs_cnt)
1608 {
1609         const enum ice_block blk = ICE_BLK_RSS;
1610         struct ice_flow_seg_info *segs;
1611         struct ice_flow_prof *prof;
1612         enum ice_status status;
1613
1614         segs = (struct ice_flow_seg_info *)ice_calloc(hw, segs_cnt,
1615                                                       sizeof(*segs));
1616         if (!segs)
1617                 return ICE_ERR_NO_MEMORY;
1618
1619         /* Construct the packet segment info from the hashed fields */
1620         status = ice_flow_set_rss_seg_info(&segs[segs_cnt - 1], hashed_flds,
1621                                            addl_hdrs);
1622         if (status)
1623                 goto out;
1624
1625         prof = ice_flow_find_prof_conds(hw, blk, ICE_FLOW_RX, segs, segs_cnt,
1626                                         vsi_handle,
1627                                         ICE_FLOW_FIND_PROF_CHK_FLDS);
1628         if (!prof) {
1629                 status = ICE_ERR_DOES_NOT_EXIST;
1630                 goto out;
1631         }
1632
1633         status = ice_flow_disassoc_prof(hw, blk, prof, vsi_handle);
1634         if (status)
1635                 goto out;
1636
1637         /* Remove RSS configuration from VSI context before deleting
1638          * the flow profile.
1639          */
1640         ice_rem_rss_list(hw, vsi_handle, prof);
1641
1642         if (!ice_is_any_bit_set(prof->vsis, ICE_MAX_VSI))
1643                 status = ice_flow_rem_prof(hw, blk, prof->id);
1644
1645 out:
1646         ice_free(hw, segs);
1647         return status;
1648 }
1649
1650 /**
1651  * ice_rem_rss_cfg - remove an existing RSS config with matching hashed fields
1652  * @hw: pointer to the hardware structure
1653  * @vsi_handle: software VSI handle
1654  * @hashed_flds: Packet hash types (ICE_FLOW_HASH_*) to remove
1655  * @addl_hdrs: Protocol header fields within a packet segment
1656  *
1657  * This function will lookup the flow profile based on the input
1658  * hash field bitmap, iterate through the profile entry list of
1659  * that profile and find entry associated with input VSI to be
1660  * removed. Calls are made to underlying flow apis which will in
1661  * turn build or update buffers for RSS XLT1 section.
1662  */
1663 enum ice_status
1664 ice_rem_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u64 hashed_flds,
1665                 u32 addl_hdrs)
1666 {
1667         enum ice_status status;
1668
1669         if (hashed_flds == ICE_HASH_INVALID ||
1670             !ice_is_vsi_valid(hw, vsi_handle))
1671                 return ICE_ERR_PARAM;
1672
1673         ice_acquire_lock(&hw->rss_locks);
1674         status = ice_rem_rss_cfg_sync(hw, vsi_handle, hashed_flds, addl_hdrs,
1675                                       ICE_RSS_OUTER_HEADERS);
1676         if (!status)
1677                 status = ice_rem_rss_cfg_sync(hw, vsi_handle, hashed_flds,
1678                                               addl_hdrs, ICE_RSS_INNER_HEADERS);
1679         ice_release_lock(&hw->rss_locks);
1680
1681         return status;
1682 }
1683
1684 /* Mapping of AVF hash bit fields to an L3-L4 hash combination.
1685  * As the ice_flow_avf_hdr_field represent individual bit shifts in a hash,
1686  * convert its values to their appropriate flow L3, L4 values.
1687  */
1688 #define ICE_FLOW_AVF_RSS_IPV4_MASKS \
1689         (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_OTHER) | \
1690          BIT_ULL(ICE_AVF_FLOW_FIELD_FRAG_IPV4))
1691 #define ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS \
1692         (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_TCP_SYN_NO_ACK) | \
1693          BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_TCP))
1694 #define ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS \
1695         (BIT_ULL(ICE_AVF_FLOW_FIELD_UNICAST_IPV4_UDP) | \
1696          BIT_ULL(ICE_AVF_FLOW_FIELD_MULTICAST_IPV4_UDP) | \
1697          BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_UDP))
1698 #define ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS \
1699         (ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS | ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS | \
1700          ICE_FLOW_AVF_RSS_IPV4_MASKS | BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP))
1701
1702 #define ICE_FLOW_AVF_RSS_IPV6_MASKS \
1703         (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_OTHER) | \
1704          BIT_ULL(ICE_AVF_FLOW_FIELD_FRAG_IPV6))
1705 #define ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS \
1706         (BIT_ULL(ICE_AVF_FLOW_FIELD_UNICAST_IPV6_UDP) | \
1707          BIT_ULL(ICE_AVF_FLOW_FIELD_MULTICAST_IPV6_UDP) | \
1708          BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_UDP))
1709 #define ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS \
1710         (BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_TCP_SYN_NO_ACK) | \
1711          BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_TCP))
1712 #define ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS \
1713         (ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS | ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS | \
1714          ICE_FLOW_AVF_RSS_IPV6_MASKS | BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP))
1715
1716 /**
1717  * ice_add_avf_rss_cfg - add an RSS configuration for AVF driver
1718  * @hw: pointer to the hardware structure
1719  * @vsi_handle: software VSI handle
1720  * @avf_hash: hash bit fields (ICE_AVF_FLOW_FIELD_*) to configure
1721  *
1722  * This function will take the hash bitmap provided by the AVF driver via a
1723  * message, convert it to ICE-compatible values, and configure RSS flow
1724  * profiles.
1725  */
1726 enum ice_status
1727 ice_add_avf_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u64 avf_hash)
1728 {
1729         enum ice_status status = ICE_SUCCESS;
1730         u64 hash_flds;
1731
1732         if (avf_hash == ICE_AVF_FLOW_FIELD_INVALID ||
1733             !ice_is_vsi_valid(hw, vsi_handle))
1734                 return ICE_ERR_PARAM;
1735
1736         /* Make sure no unsupported bits are specified */
1737         if (avf_hash & ~(ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS |
1738                          ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS))
1739                 return ICE_ERR_CFG;
1740
1741         hash_flds = avf_hash;
1742
1743         /* Always create an L3 RSS configuration for any L4 RSS configuration */
1744         if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS)
1745                 hash_flds |= ICE_FLOW_AVF_RSS_IPV4_MASKS;
1746
1747         if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS)
1748                 hash_flds |= ICE_FLOW_AVF_RSS_IPV6_MASKS;
1749
1750         /* Create the corresponding RSS configuration for each valid hash bit */
1751         while (hash_flds) {
1752                 u64 rss_hash = ICE_HASH_INVALID;
1753
1754                 if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV4_MASKS) {
1755                         if (hash_flds & ICE_FLOW_AVF_RSS_IPV4_MASKS) {
1756                                 rss_hash = ICE_FLOW_HASH_IPV4;
1757                                 hash_flds &= ~ICE_FLOW_AVF_RSS_IPV4_MASKS;
1758                         } else if (hash_flds &
1759                                    ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS) {
1760                                 rss_hash = ICE_FLOW_HASH_IPV4 |
1761                                         ICE_FLOW_HASH_TCP_PORT;
1762                                 hash_flds &= ~ICE_FLOW_AVF_RSS_TCP_IPV4_MASKS;
1763                         } else if (hash_flds &
1764                                    ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS) {
1765                                 rss_hash = ICE_FLOW_HASH_IPV4 |
1766                                         ICE_FLOW_HASH_UDP_PORT;
1767                                 hash_flds &= ~ICE_FLOW_AVF_RSS_UDP_IPV4_MASKS;
1768                         } else if (hash_flds &
1769                                    BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP)) {
1770                                 rss_hash = ICE_FLOW_HASH_IPV4 |
1771                                         ICE_FLOW_HASH_SCTP_PORT;
1772                                 hash_flds &=
1773                                         ~BIT_ULL(ICE_AVF_FLOW_FIELD_IPV4_SCTP);
1774                         }
1775                 } else if (hash_flds & ICE_FLOW_AVF_RSS_ALL_IPV6_MASKS) {
1776                         if (hash_flds & ICE_FLOW_AVF_RSS_IPV6_MASKS) {
1777                                 rss_hash = ICE_FLOW_HASH_IPV6;
1778                                 hash_flds &= ~ICE_FLOW_AVF_RSS_IPV6_MASKS;
1779                         } else if (hash_flds &
1780                                    ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS) {
1781                                 rss_hash = ICE_FLOW_HASH_IPV6 |
1782                                         ICE_FLOW_HASH_TCP_PORT;
1783                                 hash_flds &= ~ICE_FLOW_AVF_RSS_TCP_IPV6_MASKS;
1784                         } else if (hash_flds &
1785                                    ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS) {
1786                                 rss_hash = ICE_FLOW_HASH_IPV6 |
1787                                         ICE_FLOW_HASH_UDP_PORT;
1788                                 hash_flds &= ~ICE_FLOW_AVF_RSS_UDP_IPV6_MASKS;
1789                         } else if (hash_flds &
1790                                    BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP)) {
1791                                 rss_hash = ICE_FLOW_HASH_IPV6 |
1792                                         ICE_FLOW_HASH_SCTP_PORT;
1793                                 hash_flds &=
1794                                         ~BIT_ULL(ICE_AVF_FLOW_FIELD_IPV6_SCTP);
1795                         }
1796                 }
1797
1798                 if (rss_hash == ICE_HASH_INVALID)
1799                         return ICE_ERR_OUT_OF_RANGE;
1800
1801                 status = ice_add_rss_cfg(hw, vsi_handle, rss_hash,
1802                                          ICE_FLOW_SEG_HDR_NONE);
1803                 if (status)
1804                         break;
1805         }
1806
1807         return status;
1808 }
1809
1810 /**
1811  * ice_replay_rss_cfg - replay RSS configurations associated with VSI
1812  * @hw: pointer to the hardware structure
1813  * @vsi_handle: software VSI handle
1814  */
1815 enum ice_status ice_replay_rss_cfg(struct ice_hw *hw, u16 vsi_handle)
1816 {
1817         enum ice_status status = ICE_SUCCESS;
1818         struct ice_rss_cfg *r;
1819
1820         if (!ice_is_vsi_valid(hw, vsi_handle))
1821                 return ICE_ERR_PARAM;
1822
1823         ice_acquire_lock(&hw->rss_locks);
1824         LIST_FOR_EACH_ENTRY(r, &hw->rss_list_head,
1825                             ice_rss_cfg, l_entry) {
1826                 if (ice_is_bit_set(r->vsis, vsi_handle)) {
1827                         status = ice_add_rss_cfg_sync(hw, vsi_handle,
1828                                                       r->hashed_flds,
1829                                                       r->packet_hdr,
1830                                                       ICE_RSS_OUTER_HEADERS);
1831                         if (status)
1832                                 break;
1833                         status = ice_add_rss_cfg_sync(hw, vsi_handle,
1834                                                       r->hashed_flds,
1835                                                       r->packet_hdr,
1836                                                       ICE_RSS_INNER_HEADERS);
1837                         if (status)
1838                                 break;
1839                 }
1840         }
1841         ice_release_lock(&hw->rss_locks);
1842
1843         return status;
1844 }
1845
1846 /**
1847  * ice_get_rss_cfg - returns hashed fields for the given header types
1848  * @hw: pointer to the hardware structure
1849  * @vsi_handle: software VSI handle
1850  * @hdrs: protocol header type
1851  *
1852  * This function will return the match fields of the first instance of flow
1853  * profile having the given header types and containing input VSI
1854  */
1855 u64 ice_get_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u32 hdrs)
1856 {
1857         u64 rss_hash = ICE_HASH_INVALID;
1858         struct ice_rss_cfg *r;
1859
1860         /* verify if the protocol header is non zero and VSI is valid */
1861         if (hdrs == ICE_FLOW_SEG_HDR_NONE || !ice_is_vsi_valid(hw, vsi_handle))
1862                 return ICE_HASH_INVALID;
1863
1864         ice_acquire_lock(&hw->rss_locks);
1865         LIST_FOR_EACH_ENTRY(r, &hw->rss_list_head,
1866                             ice_rss_cfg, l_entry)
1867                 if (ice_is_bit_set(r->vsis, vsi_handle) &&
1868                     r->packet_hdr == hdrs) {
1869                         rss_hash = r->hashed_flds;
1870                         break;
1871                 }
1872         ice_release_lock(&hw->rss_locks);
1873
1874         return rss_hash;
1875 }