1c9da1ac1SSteen Hegelund // SPDX-License-Identifier: GPL-2.0+ 2c9da1ac1SSteen Hegelund /* Microchip VCAP API 3c9da1ac1SSteen Hegelund * 4c9da1ac1SSteen Hegelund * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries. 5c9da1ac1SSteen Hegelund */ 6c9da1ac1SSteen Hegelund 7c9da1ac1SSteen Hegelund #include <linux/types.h> 8c9da1ac1SSteen Hegelund 9d4134d41SSteen Hegelund #include "vcap_api_private.h" 10c9da1ac1SSteen Hegelund 114f141e36SHoratiu Vultur static int keyfield_size_table[] = { 124f141e36SHoratiu Vultur [VCAP_FIELD_BIT] = sizeof(struct vcap_u1_key), 134f141e36SHoratiu Vultur [VCAP_FIELD_U32] = sizeof(struct vcap_u32_key), 144f141e36SHoratiu Vultur [VCAP_FIELD_U48] = sizeof(struct vcap_u48_key), 154f141e36SHoratiu Vultur [VCAP_FIELD_U56] = sizeof(struct vcap_u56_key), 164f141e36SHoratiu Vultur [VCAP_FIELD_U64] = sizeof(struct vcap_u64_key), 174f141e36SHoratiu Vultur [VCAP_FIELD_U72] = sizeof(struct vcap_u72_key), 184f141e36SHoratiu Vultur [VCAP_FIELD_U112] = sizeof(struct vcap_u112_key), 194f141e36SHoratiu Vultur [VCAP_FIELD_U128] = sizeof(struct vcap_u128_key), 204f141e36SHoratiu Vultur }; 214f141e36SHoratiu Vultur 224f141e36SHoratiu Vultur static int actionfield_size_table[] = { 234f141e36SHoratiu Vultur [VCAP_FIELD_BIT] = sizeof(struct vcap_u1_action), 244f141e36SHoratiu Vultur [VCAP_FIELD_U32] = sizeof(struct vcap_u32_action), 254f141e36SHoratiu Vultur [VCAP_FIELD_U48] = sizeof(struct vcap_u48_action), 264f141e36SHoratiu Vultur [VCAP_FIELD_U56] = sizeof(struct vcap_u56_action), 274f141e36SHoratiu Vultur [VCAP_FIELD_U64] = sizeof(struct vcap_u64_action), 284f141e36SHoratiu Vultur [VCAP_FIELD_U72] = sizeof(struct vcap_u72_action), 294f141e36SHoratiu Vultur [VCAP_FIELD_U112] = sizeof(struct vcap_u112_action), 304f141e36SHoratiu Vultur [VCAP_FIELD_U128] = sizeof(struct vcap_u128_action), 314f141e36SHoratiu Vultur }; 324f141e36SHoratiu Vultur 338e10490bSSteen Hegelund /* Moving a rule in the VCAP address space */ 348e10490bSSteen Hegelund struct vcap_rule_move { 358e10490bSSteen Hegelund int addr; /* address to move */ 368e10490bSSteen Hegelund int offset; /* change in address */ 378e10490bSSteen Hegelund int count; /* blocksize of addresses to move */ 388e10490bSSteen Hegelund }; 398e10490bSSteen Hegelund 4067456717SSteen Hegelund /* Stores the filter cookie that enabled the port */ 4167456717SSteen Hegelund struct vcap_enabled_port { 4267456717SSteen Hegelund struct list_head list; /* for insertion in enabled ports list */ 4367456717SSteen Hegelund struct net_device *ndev; /* the enabled port */ 4467456717SSteen Hegelund unsigned long cookie; /* filter that enabled the port */ 4567456717SSteen Hegelund }; 4667456717SSteen Hegelund 47d4134d41SSteen Hegelund void vcap_iter_set(struct vcap_stream_iter *itr, int sw_width, 48683e05c0SSteen Hegelund const struct vcap_typegroup *tg, u32 offset) 49683e05c0SSteen Hegelund { 50683e05c0SSteen Hegelund memset(itr, 0, sizeof(*itr)); 51683e05c0SSteen Hegelund itr->offset = offset; 52683e05c0SSteen Hegelund itr->sw_width = sw_width; 53683e05c0SSteen Hegelund itr->regs_per_sw = DIV_ROUND_UP(sw_width, 32); 54683e05c0SSteen Hegelund itr->tg = tg; 55683e05c0SSteen Hegelund } 56683e05c0SSteen Hegelund 57683e05c0SSteen Hegelund static void vcap_iter_skip_tg(struct vcap_stream_iter *itr) 58683e05c0SSteen Hegelund { 59683e05c0SSteen Hegelund /* Compensate the field offset for preceding typegroups. 60683e05c0SSteen Hegelund * A typegroup table ends with an all-zero terminator. 61683e05c0SSteen Hegelund */ 62683e05c0SSteen Hegelund while (itr->tg->width && itr->offset >= itr->tg->offset) { 63683e05c0SSteen Hegelund itr->offset += itr->tg->width; 64683e05c0SSteen Hegelund itr->tg++; /* next typegroup */ 65683e05c0SSteen Hegelund } 66683e05c0SSteen Hegelund } 67683e05c0SSteen Hegelund 68d4134d41SSteen Hegelund void vcap_iter_update(struct vcap_stream_iter *itr) 69683e05c0SSteen Hegelund { 70683e05c0SSteen Hegelund int sw_idx, sw_bitpos; 71683e05c0SSteen Hegelund 72683e05c0SSteen Hegelund /* Calculate the subword index and bitposition for current bit */ 73683e05c0SSteen Hegelund sw_idx = itr->offset / itr->sw_width; 74683e05c0SSteen Hegelund sw_bitpos = itr->offset % itr->sw_width; 75683e05c0SSteen Hegelund /* Calculate the register index and bitposition for current bit */ 76683e05c0SSteen Hegelund itr->reg_idx = (sw_idx * itr->regs_per_sw) + (sw_bitpos / 32); 77683e05c0SSteen Hegelund itr->reg_bitpos = sw_bitpos % 32; 78683e05c0SSteen Hegelund } 79683e05c0SSteen Hegelund 80d4134d41SSteen Hegelund void vcap_iter_init(struct vcap_stream_iter *itr, int sw_width, 81683e05c0SSteen Hegelund const struct vcap_typegroup *tg, u32 offset) 82683e05c0SSteen Hegelund { 83683e05c0SSteen Hegelund vcap_iter_set(itr, sw_width, tg, offset); 84683e05c0SSteen Hegelund vcap_iter_skip_tg(itr); 85683e05c0SSteen Hegelund vcap_iter_update(itr); 86683e05c0SSteen Hegelund } 87683e05c0SSteen Hegelund 88d4134d41SSteen Hegelund void vcap_iter_next(struct vcap_stream_iter *itr) 89683e05c0SSteen Hegelund { 90683e05c0SSteen Hegelund itr->offset++; 91683e05c0SSteen Hegelund vcap_iter_skip_tg(itr); 92683e05c0SSteen Hegelund vcap_iter_update(itr); 93683e05c0SSteen Hegelund } 94683e05c0SSteen Hegelund 95683e05c0SSteen Hegelund static void vcap_set_bit(u32 *stream, struct vcap_stream_iter *itr, bool value) 96683e05c0SSteen Hegelund { 97683e05c0SSteen Hegelund u32 mask = BIT(itr->reg_bitpos); 98683e05c0SSteen Hegelund u32 *p = &stream[itr->reg_idx]; 99683e05c0SSteen Hegelund 100683e05c0SSteen Hegelund if (value) 101683e05c0SSteen Hegelund *p |= mask; 102683e05c0SSteen Hegelund else 103683e05c0SSteen Hegelund *p &= ~mask; 104683e05c0SSteen Hegelund } 105683e05c0SSteen Hegelund 106683e05c0SSteen Hegelund static void vcap_encode_bit(u32 *stream, struct vcap_stream_iter *itr, bool val) 107683e05c0SSteen Hegelund { 108683e05c0SSteen Hegelund /* When intersected by a type group field, stream the type group bits 109683e05c0SSteen Hegelund * before continuing with the value bit 110683e05c0SSteen Hegelund */ 111683e05c0SSteen Hegelund while (itr->tg->width && 112683e05c0SSteen Hegelund itr->offset >= itr->tg->offset && 113683e05c0SSteen Hegelund itr->offset < itr->tg->offset + itr->tg->width) { 114683e05c0SSteen Hegelund int tg_bitpos = itr->tg->offset - itr->offset; 115683e05c0SSteen Hegelund 116683e05c0SSteen Hegelund vcap_set_bit(stream, itr, (itr->tg->value >> tg_bitpos) & 0x1); 117683e05c0SSteen Hegelund itr->offset++; 118683e05c0SSteen Hegelund vcap_iter_update(itr); 119683e05c0SSteen Hegelund } 120683e05c0SSteen Hegelund vcap_set_bit(stream, itr, val); 121683e05c0SSteen Hegelund } 122683e05c0SSteen Hegelund 123683e05c0SSteen Hegelund static void vcap_encode_field(u32 *stream, struct vcap_stream_iter *itr, 124683e05c0SSteen Hegelund int width, const u8 *value) 125683e05c0SSteen Hegelund { 126683e05c0SSteen Hegelund int idx; 127683e05c0SSteen Hegelund 128683e05c0SSteen Hegelund /* Loop over the field value bits and add the value bits one by one to 129683e05c0SSteen Hegelund * the output stream. 130683e05c0SSteen Hegelund */ 131683e05c0SSteen Hegelund for (idx = 0; idx < width; idx++) { 132683e05c0SSteen Hegelund u8 bidx = idx & GENMASK(2, 0); 133683e05c0SSteen Hegelund 134683e05c0SSteen Hegelund /* Encode one field value bit */ 135683e05c0SSteen Hegelund vcap_encode_bit(stream, itr, (value[idx / 8] >> bidx) & 0x1); 136683e05c0SSteen Hegelund vcap_iter_next(itr); 137683e05c0SSteen Hegelund } 138683e05c0SSteen Hegelund } 139683e05c0SSteen Hegelund 140683e05c0SSteen Hegelund static void vcap_encode_typegroups(u32 *stream, int sw_width, 141683e05c0SSteen Hegelund const struct vcap_typegroup *tg, 142683e05c0SSteen Hegelund bool mask) 143683e05c0SSteen Hegelund { 144683e05c0SSteen Hegelund struct vcap_stream_iter iter; 145683e05c0SSteen Hegelund int idx; 146683e05c0SSteen Hegelund 147683e05c0SSteen Hegelund /* Mask bits must be set to zeros (inverted later when writing to the 148683e05c0SSteen Hegelund * mask cache register), so that the mask typegroup bits consist of 149683e05c0SSteen Hegelund * match-1 or match-0, or both 150683e05c0SSteen Hegelund */ 151683e05c0SSteen Hegelund vcap_iter_set(&iter, sw_width, tg, 0); 152683e05c0SSteen Hegelund while (iter.tg->width) { 153683e05c0SSteen Hegelund /* Set position to current typegroup bit */ 154683e05c0SSteen Hegelund iter.offset = iter.tg->offset; 155683e05c0SSteen Hegelund vcap_iter_update(&iter); 156683e05c0SSteen Hegelund for (idx = 0; idx < iter.tg->width; idx++) { 157683e05c0SSteen Hegelund /* Iterate over current typegroup bits. Mask typegroup 158683e05c0SSteen Hegelund * bits are always set 159683e05c0SSteen Hegelund */ 160683e05c0SSteen Hegelund if (mask) 161683e05c0SSteen Hegelund vcap_set_bit(stream, &iter, 0x1); 162683e05c0SSteen Hegelund else 163683e05c0SSteen Hegelund vcap_set_bit(stream, &iter, 164683e05c0SSteen Hegelund (iter.tg->value >> idx) & 0x1); 165683e05c0SSteen Hegelund iter.offset++; 166683e05c0SSteen Hegelund vcap_iter_update(&iter); 167683e05c0SSteen Hegelund } 168683e05c0SSteen Hegelund iter.tg++; /* next typegroup */ 169683e05c0SSteen Hegelund } 170683e05c0SSteen Hegelund } 171683e05c0SSteen Hegelund 172610c32b2SHoratiu Vultur static bool vcap_bitarray_zero(int width, u8 *value) 173610c32b2SHoratiu Vultur { 174610c32b2SHoratiu Vultur int bytes = DIV_ROUND_UP(width, BITS_PER_BYTE); 175610c32b2SHoratiu Vultur u8 total = 0, bmask = 0xff; 176610c32b2SHoratiu Vultur int rwidth = width; 177610c32b2SHoratiu Vultur int idx; 178610c32b2SHoratiu Vultur 179610c32b2SHoratiu Vultur for (idx = 0; idx < bytes; ++idx, rwidth -= BITS_PER_BYTE) { 180610c32b2SHoratiu Vultur if (rwidth && rwidth < BITS_PER_BYTE) 181610c32b2SHoratiu Vultur bmask = (1 << rwidth) - 1; 182610c32b2SHoratiu Vultur total += value[idx] & bmask; 183610c32b2SHoratiu Vultur } 184610c32b2SHoratiu Vultur return total == 0; 185610c32b2SHoratiu Vultur } 186610c32b2SHoratiu Vultur 187610c32b2SHoratiu Vultur static bool vcap_get_bit(u32 *stream, struct vcap_stream_iter *itr) 188610c32b2SHoratiu Vultur { 189610c32b2SHoratiu Vultur u32 mask = BIT(itr->reg_bitpos); 190610c32b2SHoratiu Vultur u32 *p = &stream[itr->reg_idx]; 191610c32b2SHoratiu Vultur 192610c32b2SHoratiu Vultur return !!(*p & mask); 193610c32b2SHoratiu Vultur } 194610c32b2SHoratiu Vultur 195610c32b2SHoratiu Vultur static void vcap_decode_field(u32 *stream, struct vcap_stream_iter *itr, 196610c32b2SHoratiu Vultur int width, u8 *value) 197610c32b2SHoratiu Vultur { 198610c32b2SHoratiu Vultur int idx; 199610c32b2SHoratiu Vultur 200610c32b2SHoratiu Vultur /* Loop over the field value bits and get the field bits and 201610c32b2SHoratiu Vultur * set them in the output value byte array 202610c32b2SHoratiu Vultur */ 203610c32b2SHoratiu Vultur for (idx = 0; idx < width; idx++) { 204610c32b2SHoratiu Vultur u8 bidx = idx & 0x7; 205610c32b2SHoratiu Vultur 206610c32b2SHoratiu Vultur /* Decode one field value bit */ 207610c32b2SHoratiu Vultur if (vcap_get_bit(stream, itr)) 208610c32b2SHoratiu Vultur *value |= 1 << bidx; 209610c32b2SHoratiu Vultur vcap_iter_next(itr); 210610c32b2SHoratiu Vultur if (bidx == 7) 211610c32b2SHoratiu Vultur value++; 212610c32b2SHoratiu Vultur } 213610c32b2SHoratiu Vultur } 214610c32b2SHoratiu Vultur 215610c32b2SHoratiu Vultur /* Verify that the type id in the stream matches the type id of the keyset */ 216610c32b2SHoratiu Vultur static bool vcap_verify_keystream_keyset(struct vcap_control *vctrl, 217610c32b2SHoratiu Vultur enum vcap_type vt, 218610c32b2SHoratiu Vultur u32 *keystream, 219610c32b2SHoratiu Vultur u32 *mskstream, 220610c32b2SHoratiu Vultur enum vcap_keyfield_set keyset) 221610c32b2SHoratiu Vultur { 222610c32b2SHoratiu Vultur const struct vcap_info *vcap = &vctrl->vcaps[vt]; 223610c32b2SHoratiu Vultur const struct vcap_field *typefld; 224610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 225610c32b2SHoratiu Vultur const struct vcap_field *fields; 226610c32b2SHoratiu Vultur struct vcap_stream_iter iter; 227610c32b2SHoratiu Vultur const struct vcap_set *info; 228610c32b2SHoratiu Vultur u32 value = 0; 229610c32b2SHoratiu Vultur u32 mask = 0; 230610c32b2SHoratiu Vultur 231610c32b2SHoratiu Vultur if (vcap_keyfield_count(vctrl, vt, keyset) == 0) 232610c32b2SHoratiu Vultur return false; 233610c32b2SHoratiu Vultur 234610c32b2SHoratiu Vultur info = vcap_keyfieldset(vctrl, vt, keyset); 235610c32b2SHoratiu Vultur /* Check that the keyset is valid */ 236610c32b2SHoratiu Vultur if (!info) 237610c32b2SHoratiu Vultur return false; 238610c32b2SHoratiu Vultur 239610c32b2SHoratiu Vultur /* a type_id of value -1 means that there is no type field */ 240610c32b2SHoratiu Vultur if (info->type_id == (u8)-1) 241610c32b2SHoratiu Vultur return true; 242610c32b2SHoratiu Vultur 243610c32b2SHoratiu Vultur /* Get a valid typegroup for the specific keyset */ 244610c32b2SHoratiu Vultur tgt = vcap_keyfield_typegroup(vctrl, vt, keyset); 245610c32b2SHoratiu Vultur if (!tgt) 246610c32b2SHoratiu Vultur return false; 247610c32b2SHoratiu Vultur 248610c32b2SHoratiu Vultur fields = vcap_keyfields(vctrl, vt, keyset); 249610c32b2SHoratiu Vultur if (!fields) 250610c32b2SHoratiu Vultur return false; 251610c32b2SHoratiu Vultur 252610c32b2SHoratiu Vultur typefld = &fields[VCAP_KF_TYPE]; 253610c32b2SHoratiu Vultur vcap_iter_init(&iter, vcap->sw_width, tgt, typefld->offset); 254610c32b2SHoratiu Vultur vcap_decode_field(mskstream, &iter, typefld->width, (u8 *)&mask); 255610c32b2SHoratiu Vultur /* no type info if there are no mask bits */ 256610c32b2SHoratiu Vultur if (vcap_bitarray_zero(typefld->width, (u8 *)&mask)) 257610c32b2SHoratiu Vultur return false; 258610c32b2SHoratiu Vultur 259610c32b2SHoratiu Vultur /* Get the value of the type field in the stream and compare to the 260610c32b2SHoratiu Vultur * one define in the vcap keyset 261610c32b2SHoratiu Vultur */ 262610c32b2SHoratiu Vultur vcap_iter_init(&iter, vcap->sw_width, tgt, typefld->offset); 263610c32b2SHoratiu Vultur vcap_decode_field(keystream, &iter, typefld->width, (u8 *)&value); 264610c32b2SHoratiu Vultur 265610c32b2SHoratiu Vultur return (value & mask) == (info->type_id & mask); 266610c32b2SHoratiu Vultur } 267610c32b2SHoratiu Vultur 268610c32b2SHoratiu Vultur /* Verify that the typegroup bits have the correct values */ 269610c32b2SHoratiu Vultur static int vcap_verify_typegroups(u32 *stream, int sw_width, 270610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt, bool mask, 271610c32b2SHoratiu Vultur int sw_max) 272610c32b2SHoratiu Vultur { 273610c32b2SHoratiu Vultur struct vcap_stream_iter iter; 274610c32b2SHoratiu Vultur int sw_cnt, idx; 275610c32b2SHoratiu Vultur 276610c32b2SHoratiu Vultur vcap_iter_set(&iter, sw_width, tgt, 0); 277610c32b2SHoratiu Vultur sw_cnt = 0; 278610c32b2SHoratiu Vultur while (iter.tg->width) { 279610c32b2SHoratiu Vultur u32 value = 0; 280610c32b2SHoratiu Vultur u32 tg_value = iter.tg->value; 281610c32b2SHoratiu Vultur 282610c32b2SHoratiu Vultur if (mask) 283610c32b2SHoratiu Vultur tg_value = (1 << iter.tg->width) - 1; 284610c32b2SHoratiu Vultur /* Set position to current typegroup bit */ 285610c32b2SHoratiu Vultur iter.offset = iter.tg->offset; 286610c32b2SHoratiu Vultur vcap_iter_update(&iter); 287610c32b2SHoratiu Vultur for (idx = 0; idx < iter.tg->width; idx++) { 288610c32b2SHoratiu Vultur /* Decode one typegroup bit */ 289610c32b2SHoratiu Vultur if (vcap_get_bit(stream, &iter)) 290610c32b2SHoratiu Vultur value |= 1 << idx; 291610c32b2SHoratiu Vultur iter.offset++; 292610c32b2SHoratiu Vultur vcap_iter_update(&iter); 293610c32b2SHoratiu Vultur } 294610c32b2SHoratiu Vultur if (value != tg_value) 295610c32b2SHoratiu Vultur return -EINVAL; 296610c32b2SHoratiu Vultur iter.tg++; /* next typegroup */ 297610c32b2SHoratiu Vultur sw_cnt++; 298610c32b2SHoratiu Vultur /* Stop checking more typegroups */ 299610c32b2SHoratiu Vultur if (sw_max && sw_cnt >= sw_max) 300610c32b2SHoratiu Vultur break; 301610c32b2SHoratiu Vultur } 302610c32b2SHoratiu Vultur return 0; 303610c32b2SHoratiu Vultur } 304610c32b2SHoratiu Vultur 305610c32b2SHoratiu Vultur /* Find the subword width of the key typegroup that matches the stream data */ 306610c32b2SHoratiu Vultur static int vcap_find_keystream_typegroup_sw(struct vcap_control *vctrl, 307610c32b2SHoratiu Vultur enum vcap_type vt, u32 *stream, 308610c32b2SHoratiu Vultur bool mask, int sw_max) 309610c32b2SHoratiu Vultur { 310610c32b2SHoratiu Vultur const struct vcap_typegroup **tgt; 311610c32b2SHoratiu Vultur int sw_idx, res; 312610c32b2SHoratiu Vultur 313610c32b2SHoratiu Vultur tgt = vctrl->vcaps[vt].keyfield_set_typegroups; 314610c32b2SHoratiu Vultur /* Try the longest subword match first */ 315610c32b2SHoratiu Vultur for (sw_idx = vctrl->vcaps[vt].sw_count; sw_idx >= 0; sw_idx--) { 316610c32b2SHoratiu Vultur if (!tgt[sw_idx]) 317610c32b2SHoratiu Vultur continue; 318610c32b2SHoratiu Vultur 319610c32b2SHoratiu Vultur res = vcap_verify_typegroups(stream, vctrl->vcaps[vt].sw_width, 320610c32b2SHoratiu Vultur tgt[sw_idx], mask, sw_max); 321610c32b2SHoratiu Vultur if (res == 0) 322610c32b2SHoratiu Vultur return sw_idx; 323610c32b2SHoratiu Vultur } 324610c32b2SHoratiu Vultur return -EINVAL; 325610c32b2SHoratiu Vultur } 326610c32b2SHoratiu Vultur 327610c32b2SHoratiu Vultur /* Verify that the typegroup information, subword count, keyset and type id 328610c32b2SHoratiu Vultur * are in sync and correct, return the list of matchin keysets 329610c32b2SHoratiu Vultur */ 330610c32b2SHoratiu Vultur int 331610c32b2SHoratiu Vultur vcap_find_keystream_keysets(struct vcap_control *vctrl, 332610c32b2SHoratiu Vultur enum vcap_type vt, 333610c32b2SHoratiu Vultur u32 *keystream, 334610c32b2SHoratiu Vultur u32 *mskstream, 335610c32b2SHoratiu Vultur bool mask, int sw_max, 336610c32b2SHoratiu Vultur struct vcap_keyset_list *kslist) 337610c32b2SHoratiu Vultur { 338610c32b2SHoratiu Vultur const struct vcap_set *keyfield_set; 339610c32b2SHoratiu Vultur int sw_count, idx; 340610c32b2SHoratiu Vultur 341610c32b2SHoratiu Vultur sw_count = vcap_find_keystream_typegroup_sw(vctrl, vt, keystream, mask, 342610c32b2SHoratiu Vultur sw_max); 343610c32b2SHoratiu Vultur if (sw_count < 0) 344610c32b2SHoratiu Vultur return sw_count; 345610c32b2SHoratiu Vultur 346610c32b2SHoratiu Vultur keyfield_set = vctrl->vcaps[vt].keyfield_set; 347610c32b2SHoratiu Vultur for (idx = 0; idx < vctrl->vcaps[vt].keyfield_set_size; ++idx) { 348610c32b2SHoratiu Vultur if (keyfield_set[idx].sw_per_item != sw_count) 349610c32b2SHoratiu Vultur continue; 350610c32b2SHoratiu Vultur 351610c32b2SHoratiu Vultur if (vcap_verify_keystream_keyset(vctrl, vt, keystream, 352610c32b2SHoratiu Vultur mskstream, idx)) 353610c32b2SHoratiu Vultur vcap_keyset_list_add(kslist, idx); 354610c32b2SHoratiu Vultur } 355610c32b2SHoratiu Vultur if (kslist->cnt > 0) 356610c32b2SHoratiu Vultur return 0; 357610c32b2SHoratiu Vultur return -EINVAL; 358610c32b2SHoratiu Vultur } 359610c32b2SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_find_keystream_keysets); 360610c32b2SHoratiu Vultur 361610c32b2SHoratiu Vultur /* Read key data from a VCAP address and discover if there are any rule keysets 362610c32b2SHoratiu Vultur * here 363610c32b2SHoratiu Vultur */ 364610c32b2SHoratiu Vultur int vcap_addr_keysets(struct vcap_control *vctrl, 365610c32b2SHoratiu Vultur struct net_device *ndev, 366610c32b2SHoratiu Vultur struct vcap_admin *admin, 367610c32b2SHoratiu Vultur int addr, 368610c32b2SHoratiu Vultur struct vcap_keyset_list *kslist) 369610c32b2SHoratiu Vultur { 370610c32b2SHoratiu Vultur enum vcap_type vt = admin->vtype; 371610c32b2SHoratiu Vultur int keyset_sw_regs, idx; 372610c32b2SHoratiu Vultur u32 key = 0, mask = 0; 373610c32b2SHoratiu Vultur 374610c32b2SHoratiu Vultur /* Read the cache at the specified address */ 375610c32b2SHoratiu Vultur keyset_sw_regs = DIV_ROUND_UP(vctrl->vcaps[vt].sw_width, 32); 376610c32b2SHoratiu Vultur vctrl->ops->update(ndev, admin, VCAP_CMD_READ, VCAP_SEL_ALL, addr); 377610c32b2SHoratiu Vultur vctrl->ops->cache_read(ndev, admin, VCAP_SEL_ENTRY, 0, 378610c32b2SHoratiu Vultur keyset_sw_regs); 379610c32b2SHoratiu Vultur /* Skip uninitialized key/mask entries */ 380610c32b2SHoratiu Vultur for (idx = 0; idx < keyset_sw_regs; ++idx) { 381610c32b2SHoratiu Vultur key |= ~admin->cache.keystream[idx]; 382610c32b2SHoratiu Vultur mask |= admin->cache.maskstream[idx]; 383610c32b2SHoratiu Vultur } 384610c32b2SHoratiu Vultur if (key == 0 && mask == 0) 385610c32b2SHoratiu Vultur return -EINVAL; 386610c32b2SHoratiu Vultur /* Decode and locate the keysets */ 387610c32b2SHoratiu Vultur return vcap_find_keystream_keysets(vctrl, vt, admin->cache.keystream, 388610c32b2SHoratiu Vultur admin->cache.maskstream, false, 0, 389610c32b2SHoratiu Vultur kslist); 390610c32b2SHoratiu Vultur } 391610c32b2SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_addr_keysets); 392610c32b2SHoratiu Vultur 39346be056eSSteen Hegelund /* Return the list of keyfields for the keyset */ 394d4134d41SSteen Hegelund const struct vcap_field *vcap_keyfields(struct vcap_control *vctrl, 39546be056eSSteen Hegelund enum vcap_type vt, 39646be056eSSteen Hegelund enum vcap_keyfield_set keyset) 39746be056eSSteen Hegelund { 39846be056eSSteen Hegelund /* Check that the keyset exists in the vcap keyset list */ 39946be056eSSteen Hegelund if (keyset >= vctrl->vcaps[vt].keyfield_set_size) 40046be056eSSteen Hegelund return NULL; 40146be056eSSteen Hegelund return vctrl->vcaps[vt].keyfield_set_map[keyset]; 40246be056eSSteen Hegelund } 40346be056eSSteen Hegelund 4048e10490bSSteen Hegelund /* Return the keyset information for the keyset */ 405d4134d41SSteen Hegelund const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl, 4068e10490bSSteen Hegelund enum vcap_type vt, 4078e10490bSSteen Hegelund enum vcap_keyfield_set keyset) 4088e10490bSSteen Hegelund { 4098e10490bSSteen Hegelund const struct vcap_set *kset; 4108e10490bSSteen Hegelund 4118e10490bSSteen Hegelund /* Check that the keyset exists in the vcap keyset list */ 4128e10490bSSteen Hegelund if (keyset >= vctrl->vcaps[vt].keyfield_set_size) 4138e10490bSSteen Hegelund return NULL; 4148e10490bSSteen Hegelund kset = &vctrl->vcaps[vt].keyfield_set[keyset]; 4158e10490bSSteen Hegelund if (kset->sw_per_item == 0 || kset->sw_per_item > vctrl->vcaps[vt].sw_count) 4168e10490bSSteen Hegelund return NULL; 4178e10490bSSteen Hegelund return kset; 4188e10490bSSteen Hegelund } 419465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyfieldset); 4208e10490bSSteen Hegelund 421683e05c0SSteen Hegelund /* Return the typegroup table for the matching keyset (using subword size) */ 422d4134d41SSteen Hegelund const struct vcap_typegroup * 423683e05c0SSteen Hegelund vcap_keyfield_typegroup(struct vcap_control *vctrl, 424683e05c0SSteen Hegelund enum vcap_type vt, enum vcap_keyfield_set keyset) 425683e05c0SSteen Hegelund { 426683e05c0SSteen Hegelund const struct vcap_set *kset = vcap_keyfieldset(vctrl, vt, keyset); 427683e05c0SSteen Hegelund 428683e05c0SSteen Hegelund /* Check that the keyset is valid */ 429683e05c0SSteen Hegelund if (!kset) 430683e05c0SSteen Hegelund return NULL; 431683e05c0SSteen Hegelund return vctrl->vcaps[vt].keyfield_set_typegroups[kset->sw_per_item]; 432683e05c0SSteen Hegelund } 433683e05c0SSteen Hegelund 434683e05c0SSteen Hegelund /* Return the number of keyfields in the keyset */ 435d4134d41SSteen Hegelund int vcap_keyfield_count(struct vcap_control *vctrl, 436683e05c0SSteen Hegelund enum vcap_type vt, enum vcap_keyfield_set keyset) 437683e05c0SSteen Hegelund { 438683e05c0SSteen Hegelund /* Check that the keyset exists in the vcap keyset list */ 439683e05c0SSteen Hegelund if (keyset >= vctrl->vcaps[vt].keyfield_set_size) 440683e05c0SSteen Hegelund return 0; 441683e05c0SSteen Hegelund return vctrl->vcaps[vt].keyfield_set_map_size[keyset]; 442683e05c0SSteen Hegelund } 443683e05c0SSteen Hegelund 444683e05c0SSteen Hegelund static void vcap_encode_keyfield(struct vcap_rule_internal *ri, 445683e05c0SSteen Hegelund const struct vcap_client_keyfield *kf, 446683e05c0SSteen Hegelund const struct vcap_field *rf, 447683e05c0SSteen Hegelund const struct vcap_typegroup *tgt) 448683e05c0SSteen Hegelund { 449683e05c0SSteen Hegelund int sw_width = ri->vctrl->vcaps[ri->admin->vtype].sw_width; 450683e05c0SSteen Hegelund struct vcap_cache_data *cache = &ri->admin->cache; 451683e05c0SSteen Hegelund struct vcap_stream_iter iter; 452683e05c0SSteen Hegelund const u8 *value, *mask; 453683e05c0SSteen Hegelund 454683e05c0SSteen Hegelund /* Encode the fields for the key and the mask in their respective 455683e05c0SSteen Hegelund * streams, respecting the subword width. 456683e05c0SSteen Hegelund */ 457683e05c0SSteen Hegelund switch (kf->ctrl.type) { 458683e05c0SSteen Hegelund case VCAP_FIELD_BIT: 459683e05c0SSteen Hegelund value = &kf->data.u1.value; 460683e05c0SSteen Hegelund mask = &kf->data.u1.mask; 461683e05c0SSteen Hegelund break; 462683e05c0SSteen Hegelund case VCAP_FIELD_U32: 463683e05c0SSteen Hegelund value = (const u8 *)&kf->data.u32.value; 464683e05c0SSteen Hegelund mask = (const u8 *)&kf->data.u32.mask; 465683e05c0SSteen Hegelund break; 466683e05c0SSteen Hegelund case VCAP_FIELD_U48: 467683e05c0SSteen Hegelund value = kf->data.u48.value; 468683e05c0SSteen Hegelund mask = kf->data.u48.mask; 469683e05c0SSteen Hegelund break; 470683e05c0SSteen Hegelund case VCAP_FIELD_U56: 471683e05c0SSteen Hegelund value = kf->data.u56.value; 472683e05c0SSteen Hegelund mask = kf->data.u56.mask; 473683e05c0SSteen Hegelund break; 474683e05c0SSteen Hegelund case VCAP_FIELD_U64: 475683e05c0SSteen Hegelund value = kf->data.u64.value; 476683e05c0SSteen Hegelund mask = kf->data.u64.mask; 477683e05c0SSteen Hegelund break; 478683e05c0SSteen Hegelund case VCAP_FIELD_U72: 479683e05c0SSteen Hegelund value = kf->data.u72.value; 480683e05c0SSteen Hegelund mask = kf->data.u72.mask; 481683e05c0SSteen Hegelund break; 482683e05c0SSteen Hegelund case VCAP_FIELD_U112: 483683e05c0SSteen Hegelund value = kf->data.u112.value; 484683e05c0SSteen Hegelund mask = kf->data.u112.mask; 485683e05c0SSteen Hegelund break; 486683e05c0SSteen Hegelund case VCAP_FIELD_U128: 487683e05c0SSteen Hegelund value = kf->data.u128.value; 488683e05c0SSteen Hegelund mask = kf->data.u128.mask; 489683e05c0SSteen Hegelund break; 490683e05c0SSteen Hegelund } 491683e05c0SSteen Hegelund vcap_iter_init(&iter, sw_width, tgt, rf->offset); 492683e05c0SSteen Hegelund vcap_encode_field(cache->keystream, &iter, rf->width, value); 493683e05c0SSteen Hegelund vcap_iter_init(&iter, sw_width, tgt, rf->offset); 494683e05c0SSteen Hegelund vcap_encode_field(cache->maskstream, &iter, rf->width, mask); 495683e05c0SSteen Hegelund } 496683e05c0SSteen Hegelund 497683e05c0SSteen Hegelund static void vcap_encode_keyfield_typegroups(struct vcap_control *vctrl, 498683e05c0SSteen Hegelund struct vcap_rule_internal *ri, 499683e05c0SSteen Hegelund const struct vcap_typegroup *tgt) 500683e05c0SSteen Hegelund { 501683e05c0SSteen Hegelund int sw_width = vctrl->vcaps[ri->admin->vtype].sw_width; 502683e05c0SSteen Hegelund struct vcap_cache_data *cache = &ri->admin->cache; 503683e05c0SSteen Hegelund 504683e05c0SSteen Hegelund /* Encode the typegroup bits for the key and the mask in their streams, 505683e05c0SSteen Hegelund * respecting the subword width. 506683e05c0SSteen Hegelund */ 507683e05c0SSteen Hegelund vcap_encode_typegroups(cache->keystream, sw_width, tgt, false); 508683e05c0SSteen Hegelund vcap_encode_typegroups(cache->maskstream, sw_width, tgt, true); 509683e05c0SSteen Hegelund } 510683e05c0SSteen Hegelund 511683e05c0SSteen Hegelund static int vcap_encode_rule_keyset(struct vcap_rule_internal *ri) 512683e05c0SSteen Hegelund { 513683e05c0SSteen Hegelund const struct vcap_client_keyfield *ckf; 514683e05c0SSteen Hegelund const struct vcap_typegroup *tg_table; 515683e05c0SSteen Hegelund const struct vcap_field *kf_table; 516683e05c0SSteen Hegelund int keyset_size; 517683e05c0SSteen Hegelund 518683e05c0SSteen Hegelund /* Get a valid set of fields for the specific keyset */ 519683e05c0SSteen Hegelund kf_table = vcap_keyfields(ri->vctrl, ri->admin->vtype, ri->data.keyset); 520683e05c0SSteen Hegelund if (!kf_table) { 521683e05c0SSteen Hegelund pr_err("%s:%d: no fields available for this keyset: %d\n", 522683e05c0SSteen Hegelund __func__, __LINE__, ri->data.keyset); 523683e05c0SSteen Hegelund return -EINVAL; 524683e05c0SSteen Hegelund } 525683e05c0SSteen Hegelund /* Get a valid typegroup for the specific keyset */ 526683e05c0SSteen Hegelund tg_table = vcap_keyfield_typegroup(ri->vctrl, ri->admin->vtype, 527683e05c0SSteen Hegelund ri->data.keyset); 528683e05c0SSteen Hegelund if (!tg_table) { 529683e05c0SSteen Hegelund pr_err("%s:%d: no typegroups available for this keyset: %d\n", 530683e05c0SSteen Hegelund __func__, __LINE__, ri->data.keyset); 531683e05c0SSteen Hegelund return -EINVAL; 532683e05c0SSteen Hegelund } 533683e05c0SSteen Hegelund /* Get a valid size for the specific keyset */ 534683e05c0SSteen Hegelund keyset_size = vcap_keyfield_count(ri->vctrl, ri->admin->vtype, 535683e05c0SSteen Hegelund ri->data.keyset); 536683e05c0SSteen Hegelund if (keyset_size == 0) { 537683e05c0SSteen Hegelund pr_err("%s:%d: zero field count for this keyset: %d\n", 538683e05c0SSteen Hegelund __func__, __LINE__, ri->data.keyset); 539683e05c0SSteen Hegelund return -EINVAL; 540683e05c0SSteen Hegelund } 541683e05c0SSteen Hegelund /* Iterate over the keyfields (key, mask) in the rule 542683e05c0SSteen Hegelund * and encode these bits 543683e05c0SSteen Hegelund */ 544683e05c0SSteen Hegelund if (list_empty(&ri->data.keyfields)) { 545683e05c0SSteen Hegelund pr_err("%s:%d: no keyfields in the rule\n", __func__, __LINE__); 546683e05c0SSteen Hegelund return -EINVAL; 547683e05c0SSteen Hegelund } 548683e05c0SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) { 549683e05c0SSteen Hegelund /* Check that the client entry exists in the keyset */ 550683e05c0SSteen Hegelund if (ckf->ctrl.key >= keyset_size) { 551683e05c0SSteen Hegelund pr_err("%s:%d: key %d is not in vcap\n", 552683e05c0SSteen Hegelund __func__, __LINE__, ckf->ctrl.key); 553683e05c0SSteen Hegelund return -EINVAL; 554683e05c0SSteen Hegelund } 555683e05c0SSteen Hegelund vcap_encode_keyfield(ri, ckf, &kf_table[ckf->ctrl.key], tg_table); 556683e05c0SSteen Hegelund } 557683e05c0SSteen Hegelund /* Add typegroup bits to the key/mask bitstreams */ 558683e05c0SSteen Hegelund vcap_encode_keyfield_typegroups(ri->vctrl, ri, tg_table); 559683e05c0SSteen Hegelund return 0; 560683e05c0SSteen Hegelund } 561683e05c0SSteen Hegelund 562683e05c0SSteen Hegelund /* Return the list of actionfields for the actionset */ 56372d84dd6SSteen Hegelund const struct vcap_field * 564683e05c0SSteen Hegelund vcap_actionfields(struct vcap_control *vctrl, 565683e05c0SSteen Hegelund enum vcap_type vt, enum vcap_actionfield_set actionset) 566683e05c0SSteen Hegelund { 567683e05c0SSteen Hegelund /* Check that the actionset exists in the vcap actionset list */ 568683e05c0SSteen Hegelund if (actionset >= vctrl->vcaps[vt].actionfield_set_size) 569683e05c0SSteen Hegelund return NULL; 570683e05c0SSteen Hegelund return vctrl->vcaps[vt].actionfield_set_map[actionset]; 571683e05c0SSteen Hegelund } 572683e05c0SSteen Hegelund 57372d84dd6SSteen Hegelund const struct vcap_set * 5748e10490bSSteen Hegelund vcap_actionfieldset(struct vcap_control *vctrl, 5758e10490bSSteen Hegelund enum vcap_type vt, enum vcap_actionfield_set actionset) 5768e10490bSSteen Hegelund { 5778e10490bSSteen Hegelund const struct vcap_set *aset; 5788e10490bSSteen Hegelund 5798e10490bSSteen Hegelund /* Check that the actionset exists in the vcap actionset list */ 5808e10490bSSteen Hegelund if (actionset >= vctrl->vcaps[vt].actionfield_set_size) 5818e10490bSSteen Hegelund return NULL; 5828e10490bSSteen Hegelund aset = &vctrl->vcaps[vt].actionfield_set[actionset]; 5838e10490bSSteen Hegelund if (aset->sw_per_item == 0 || aset->sw_per_item > vctrl->vcaps[vt].sw_count) 5848e10490bSSteen Hegelund return NULL; 5858e10490bSSteen Hegelund return aset; 5868e10490bSSteen Hegelund } 5878e10490bSSteen Hegelund 588683e05c0SSteen Hegelund /* Return the typegroup table for the matching actionset (using subword size) */ 58972d84dd6SSteen Hegelund const struct vcap_typegroup * 590683e05c0SSteen Hegelund vcap_actionfield_typegroup(struct vcap_control *vctrl, 591683e05c0SSteen Hegelund enum vcap_type vt, enum vcap_actionfield_set actionset) 592683e05c0SSteen Hegelund { 593683e05c0SSteen Hegelund const struct vcap_set *aset = vcap_actionfieldset(vctrl, vt, actionset); 594683e05c0SSteen Hegelund 595683e05c0SSteen Hegelund /* Check that the actionset is valid */ 596683e05c0SSteen Hegelund if (!aset) 597683e05c0SSteen Hegelund return NULL; 598683e05c0SSteen Hegelund return vctrl->vcaps[vt].actionfield_set_typegroups[aset->sw_per_item]; 599683e05c0SSteen Hegelund } 600683e05c0SSteen Hegelund 601683e05c0SSteen Hegelund /* Return the number of actionfields in the actionset */ 60272d84dd6SSteen Hegelund int vcap_actionfield_count(struct vcap_control *vctrl, 603683e05c0SSteen Hegelund enum vcap_type vt, 604683e05c0SSteen Hegelund enum vcap_actionfield_set actionset) 605683e05c0SSteen Hegelund { 606683e05c0SSteen Hegelund /* Check that the actionset exists in the vcap actionset list */ 607683e05c0SSteen Hegelund if (actionset >= vctrl->vcaps[vt].actionfield_set_size) 608683e05c0SSteen Hegelund return 0; 609683e05c0SSteen Hegelund return vctrl->vcaps[vt].actionfield_set_map_size[actionset]; 610683e05c0SSteen Hegelund } 611683e05c0SSteen Hegelund 612683e05c0SSteen Hegelund static void vcap_encode_actionfield(struct vcap_rule_internal *ri, 613683e05c0SSteen Hegelund const struct vcap_client_actionfield *af, 614683e05c0SSteen Hegelund const struct vcap_field *rf, 615683e05c0SSteen Hegelund const struct vcap_typegroup *tgt) 616683e05c0SSteen Hegelund { 617683e05c0SSteen Hegelund int act_width = ri->vctrl->vcaps[ri->admin->vtype].act_width; 618683e05c0SSteen Hegelund 619683e05c0SSteen Hegelund struct vcap_cache_data *cache = &ri->admin->cache; 620683e05c0SSteen Hegelund struct vcap_stream_iter iter; 621683e05c0SSteen Hegelund const u8 *value; 622683e05c0SSteen Hegelund 623683e05c0SSteen Hegelund /* Encode the action field in the stream, respecting the subword width */ 624683e05c0SSteen Hegelund switch (af->ctrl.type) { 625683e05c0SSteen Hegelund case VCAP_FIELD_BIT: 626683e05c0SSteen Hegelund value = &af->data.u1.value; 627683e05c0SSteen Hegelund break; 628683e05c0SSteen Hegelund case VCAP_FIELD_U32: 629683e05c0SSteen Hegelund value = (const u8 *)&af->data.u32.value; 630683e05c0SSteen Hegelund break; 631683e05c0SSteen Hegelund case VCAP_FIELD_U48: 632683e05c0SSteen Hegelund value = af->data.u48.value; 633683e05c0SSteen Hegelund break; 634683e05c0SSteen Hegelund case VCAP_FIELD_U56: 635683e05c0SSteen Hegelund value = af->data.u56.value; 636683e05c0SSteen Hegelund break; 637683e05c0SSteen Hegelund case VCAP_FIELD_U64: 638683e05c0SSteen Hegelund value = af->data.u64.value; 639683e05c0SSteen Hegelund break; 640683e05c0SSteen Hegelund case VCAP_FIELD_U72: 641683e05c0SSteen Hegelund value = af->data.u72.value; 642683e05c0SSteen Hegelund break; 643683e05c0SSteen Hegelund case VCAP_FIELD_U112: 644683e05c0SSteen Hegelund value = af->data.u112.value; 645683e05c0SSteen Hegelund break; 646683e05c0SSteen Hegelund case VCAP_FIELD_U128: 647683e05c0SSteen Hegelund value = af->data.u128.value; 648683e05c0SSteen Hegelund break; 649683e05c0SSteen Hegelund } 650683e05c0SSteen Hegelund vcap_iter_init(&iter, act_width, tgt, rf->offset); 651683e05c0SSteen Hegelund vcap_encode_field(cache->actionstream, &iter, rf->width, value); 652683e05c0SSteen Hegelund } 653683e05c0SSteen Hegelund 654683e05c0SSteen Hegelund static void vcap_encode_actionfield_typegroups(struct vcap_rule_internal *ri, 655683e05c0SSteen Hegelund const struct vcap_typegroup *tgt) 656683e05c0SSteen Hegelund { 657683e05c0SSteen Hegelund int sw_width = ri->vctrl->vcaps[ri->admin->vtype].act_width; 658683e05c0SSteen Hegelund struct vcap_cache_data *cache = &ri->admin->cache; 659683e05c0SSteen Hegelund 660683e05c0SSteen Hegelund /* Encode the typegroup bits for the actionstream respecting the subword 661683e05c0SSteen Hegelund * width. 662683e05c0SSteen Hegelund */ 663683e05c0SSteen Hegelund vcap_encode_typegroups(cache->actionstream, sw_width, tgt, false); 664683e05c0SSteen Hegelund } 665683e05c0SSteen Hegelund 666683e05c0SSteen Hegelund static int vcap_encode_rule_actionset(struct vcap_rule_internal *ri) 667683e05c0SSteen Hegelund { 668683e05c0SSteen Hegelund const struct vcap_client_actionfield *caf; 669683e05c0SSteen Hegelund const struct vcap_typegroup *tg_table; 670683e05c0SSteen Hegelund const struct vcap_field *af_table; 671683e05c0SSteen Hegelund int actionset_size; 672683e05c0SSteen Hegelund 673683e05c0SSteen Hegelund /* Get a valid set of actionset fields for the specific actionset */ 674683e05c0SSteen Hegelund af_table = vcap_actionfields(ri->vctrl, ri->admin->vtype, 675683e05c0SSteen Hegelund ri->data.actionset); 676683e05c0SSteen Hegelund if (!af_table) { 677683e05c0SSteen Hegelund pr_err("%s:%d: no fields available for this actionset: %d\n", 678683e05c0SSteen Hegelund __func__, __LINE__, ri->data.actionset); 679683e05c0SSteen Hegelund return -EINVAL; 680683e05c0SSteen Hegelund } 681683e05c0SSteen Hegelund /* Get a valid typegroup for the specific actionset */ 682683e05c0SSteen Hegelund tg_table = vcap_actionfield_typegroup(ri->vctrl, ri->admin->vtype, 683683e05c0SSteen Hegelund ri->data.actionset); 684683e05c0SSteen Hegelund if (!tg_table) { 685683e05c0SSteen Hegelund pr_err("%s:%d: no typegroups available for this actionset: %d\n", 686683e05c0SSteen Hegelund __func__, __LINE__, ri->data.actionset); 687683e05c0SSteen Hegelund return -EINVAL; 688683e05c0SSteen Hegelund } 689683e05c0SSteen Hegelund /* Get a valid actionset size for the specific actionset */ 690683e05c0SSteen Hegelund actionset_size = vcap_actionfield_count(ri->vctrl, ri->admin->vtype, 691683e05c0SSteen Hegelund ri->data.actionset); 692683e05c0SSteen Hegelund if (actionset_size == 0) { 693683e05c0SSteen Hegelund pr_err("%s:%d: zero field count for this actionset: %d\n", 694683e05c0SSteen Hegelund __func__, __LINE__, ri->data.actionset); 695683e05c0SSteen Hegelund return -EINVAL; 696683e05c0SSteen Hegelund } 697683e05c0SSteen Hegelund /* Iterate over the actionfields in the rule 698683e05c0SSteen Hegelund * and encode these bits 699683e05c0SSteen Hegelund */ 700683e05c0SSteen Hegelund if (list_empty(&ri->data.actionfields)) 701683e05c0SSteen Hegelund pr_warn("%s:%d: no actionfields in the rule\n", 702683e05c0SSteen Hegelund __func__, __LINE__); 703683e05c0SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) { 704683e05c0SSteen Hegelund /* Check that the client action exists in the actionset */ 705683e05c0SSteen Hegelund if (caf->ctrl.action >= actionset_size) { 706683e05c0SSteen Hegelund pr_err("%s:%d: action %d is not in vcap\n", 707683e05c0SSteen Hegelund __func__, __LINE__, caf->ctrl.action); 708683e05c0SSteen Hegelund return -EINVAL; 709683e05c0SSteen Hegelund } 710683e05c0SSteen Hegelund vcap_encode_actionfield(ri, caf, &af_table[caf->ctrl.action], 711683e05c0SSteen Hegelund tg_table); 712683e05c0SSteen Hegelund } 713683e05c0SSteen Hegelund /* Add typegroup bits to the entry bitstreams */ 714683e05c0SSteen Hegelund vcap_encode_actionfield_typegroups(ri, tg_table); 715683e05c0SSteen Hegelund return 0; 716683e05c0SSteen Hegelund } 717683e05c0SSteen Hegelund 7188e10490bSSteen Hegelund static int vcap_encode_rule(struct vcap_rule_internal *ri) 7198e10490bSSteen Hegelund { 720683e05c0SSteen Hegelund int err; 721683e05c0SSteen Hegelund 722683e05c0SSteen Hegelund err = vcap_encode_rule_keyset(ri); 723683e05c0SSteen Hegelund if (err) 724683e05c0SSteen Hegelund return err; 725683e05c0SSteen Hegelund err = vcap_encode_rule_actionset(ri); 726683e05c0SSteen Hegelund if (err) 727683e05c0SSteen Hegelund return err; 7288e10490bSSteen Hegelund return 0; 7298e10490bSSteen Hegelund } 7308e10490bSSteen Hegelund 731d4134d41SSteen Hegelund int vcap_api_check(struct vcap_control *ctrl) 7328e10490bSSteen Hegelund { 7338e10490bSSteen Hegelund if (!ctrl) { 7348e10490bSSteen Hegelund pr_err("%s:%d: vcap control is missing\n", __func__, __LINE__); 7358e10490bSSteen Hegelund return -EINVAL; 7368e10490bSSteen Hegelund } 7378e10490bSSteen Hegelund if (!ctrl->ops || !ctrl->ops->validate_keyset || 7388e10490bSSteen Hegelund !ctrl->ops->add_default_fields || !ctrl->ops->cache_erase || 7398e10490bSSteen Hegelund !ctrl->ops->cache_write || !ctrl->ops->cache_read || 7408e10490bSSteen Hegelund !ctrl->ops->init || !ctrl->ops->update || !ctrl->ops->move || 74167456717SSteen Hegelund !ctrl->ops->port_info || !ctrl->ops->enable) { 7428e10490bSSteen Hegelund pr_err("%s:%d: client operations are missing\n", 7438e10490bSSteen Hegelund __func__, __LINE__); 7448e10490bSSteen Hegelund return -ENOENT; 7458e10490bSSteen Hegelund } 7468e10490bSSteen Hegelund return 0; 7478e10490bSSteen Hegelund } 7488e10490bSSteen Hegelund 7493a792156SSteen Hegelund void vcap_erase_cache(struct vcap_rule_internal *ri) 7508e10490bSSteen Hegelund { 7518e10490bSSteen Hegelund ri->vctrl->ops->cache_erase(ri->admin); 7528e10490bSSteen Hegelund } 7538e10490bSSteen Hegelund 754c9da1ac1SSteen Hegelund /* Update the keyset for the rule */ 755c9da1ac1SSteen Hegelund int vcap_set_rule_set_keyset(struct vcap_rule *rule, 756c9da1ac1SSteen Hegelund enum vcap_keyfield_set keyset) 757c9da1ac1SSteen Hegelund { 7588e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 7598e10490bSSteen Hegelund const struct vcap_set *kset; 7608e10490bSSteen Hegelund int sw_width; 7618e10490bSSteen Hegelund 7628e10490bSSteen Hegelund kset = vcap_keyfieldset(ri->vctrl, ri->admin->vtype, keyset); 7638e10490bSSteen Hegelund /* Check that the keyset is valid */ 7648e10490bSSteen Hegelund if (!kset) 7658e10490bSSteen Hegelund return -EINVAL; 7668e10490bSSteen Hegelund ri->keyset_sw = kset->sw_per_item; 7678e10490bSSteen Hegelund sw_width = ri->vctrl->vcaps[ri->admin->vtype].sw_width; 7688e10490bSSteen Hegelund ri->keyset_sw_regs = DIV_ROUND_UP(sw_width, 32); 7698e10490bSSteen Hegelund ri->data.keyset = keyset; 770c9da1ac1SSteen Hegelund return 0; 771c9da1ac1SSteen Hegelund } 772c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_set_rule_set_keyset); 773c9da1ac1SSteen Hegelund 774c9da1ac1SSteen Hegelund /* Update the actionset for the rule */ 775c9da1ac1SSteen Hegelund int vcap_set_rule_set_actionset(struct vcap_rule *rule, 776c9da1ac1SSteen Hegelund enum vcap_actionfield_set actionset) 777c9da1ac1SSteen Hegelund { 7788e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 7798e10490bSSteen Hegelund const struct vcap_set *aset; 7808e10490bSSteen Hegelund int act_width; 7818e10490bSSteen Hegelund 7828e10490bSSteen Hegelund aset = vcap_actionfieldset(ri->vctrl, ri->admin->vtype, actionset); 7838e10490bSSteen Hegelund /* Check that the actionset is valid */ 7848e10490bSSteen Hegelund if (!aset) 7858e10490bSSteen Hegelund return -EINVAL; 7868e10490bSSteen Hegelund ri->actionset_sw = aset->sw_per_item; 7878e10490bSSteen Hegelund act_width = ri->vctrl->vcaps[ri->admin->vtype].act_width; 7888e10490bSSteen Hegelund ri->actionset_sw_regs = DIV_ROUND_UP(act_width, 32); 7898e10490bSSteen Hegelund ri->data.actionset = actionset; 790c9da1ac1SSteen Hegelund return 0; 791c9da1ac1SSteen Hegelund } 792c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_set_rule_set_actionset); 793c9da1ac1SSteen Hegelund 794c9da1ac1SSteen Hegelund /* Find a rule with a provided rule id */ 795c9da1ac1SSteen Hegelund static struct vcap_rule_internal *vcap_lookup_rule(struct vcap_control *vctrl, 796c9da1ac1SSteen Hegelund u32 id) 797c9da1ac1SSteen Hegelund { 798c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri; 799c9da1ac1SSteen Hegelund struct vcap_admin *admin; 800c9da1ac1SSteen Hegelund 801c9da1ac1SSteen Hegelund /* Look for the rule id in all vcaps */ 802c9da1ac1SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 803c9da1ac1SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) 804c9da1ac1SSteen Hegelund if (ri->data.id == id) 805c9da1ac1SSteen Hegelund return ri; 806c9da1ac1SSteen Hegelund return NULL; 807c9da1ac1SSteen Hegelund } 808c9da1ac1SSteen Hegelund 809c9da1ac1SSteen Hegelund /* Find a rule id with a provided cookie */ 810c9da1ac1SSteen Hegelund int vcap_lookup_rule_by_cookie(struct vcap_control *vctrl, u64 cookie) 811c9da1ac1SSteen Hegelund { 812c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri; 813c9da1ac1SSteen Hegelund struct vcap_admin *admin; 814c9da1ac1SSteen Hegelund 815c9da1ac1SSteen Hegelund /* Look for the rule id in all vcaps */ 816c9da1ac1SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 817c9da1ac1SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) 818c9da1ac1SSteen Hegelund if (ri->data.cookie == cookie) 819c9da1ac1SSteen Hegelund return ri->data.id; 820c9da1ac1SSteen Hegelund return -ENOENT; 821c9da1ac1SSteen Hegelund } 822c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_lookup_rule_by_cookie); 823c9da1ac1SSteen Hegelund 8248e10490bSSteen Hegelund /* Make a shallow copy of the rule without the fields */ 8253a792156SSteen Hegelund struct vcap_rule_internal *vcap_dup_rule(struct vcap_rule_internal *ri) 8268e10490bSSteen Hegelund { 8278e10490bSSteen Hegelund struct vcap_rule_internal *duprule; 8288e10490bSSteen Hegelund 8298e10490bSSteen Hegelund /* Allocate the client part */ 8308e10490bSSteen Hegelund duprule = kzalloc(sizeof(*duprule), GFP_KERNEL); 8318e10490bSSteen Hegelund if (!duprule) 8328e10490bSSteen Hegelund return ERR_PTR(-ENOMEM); 8338e10490bSSteen Hegelund *duprule = *ri; 8348e10490bSSteen Hegelund /* Not inserted in the VCAP */ 8358e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->list); 8368e10490bSSteen Hegelund /* No elements in these lists */ 8378e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->data.keyfields); 8388e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->data.actionfields); 8398e10490bSSteen Hegelund return duprule; 8408e10490bSSteen Hegelund } 8418e10490bSSteen Hegelund 842610c32b2SHoratiu Vultur static void vcap_apply_width(u8 *dst, int width, int bytes) 843610c32b2SHoratiu Vultur { 844610c32b2SHoratiu Vultur u8 bmask; 845610c32b2SHoratiu Vultur int idx; 846610c32b2SHoratiu Vultur 847610c32b2SHoratiu Vultur for (idx = 0; idx < bytes; idx++) { 848610c32b2SHoratiu Vultur if (width > 0) 849610c32b2SHoratiu Vultur if (width < 8) 850610c32b2SHoratiu Vultur bmask = (1 << width) - 1; 851610c32b2SHoratiu Vultur else 852610c32b2SHoratiu Vultur bmask = ~0; 853610c32b2SHoratiu Vultur else 854610c32b2SHoratiu Vultur bmask = 0; 855610c32b2SHoratiu Vultur dst[idx] &= bmask; 856610c32b2SHoratiu Vultur width -= 8; 857610c32b2SHoratiu Vultur } 858610c32b2SHoratiu Vultur } 859610c32b2SHoratiu Vultur 860610c32b2SHoratiu Vultur static void vcap_copy_from_w32be(u8 *dst, u8 *src, int size, int width) 861610c32b2SHoratiu Vultur { 862610c32b2SHoratiu Vultur int idx, ridx, wstart, nidx; 863610c32b2SHoratiu Vultur int tail_bytes = (((size + 4) >> 2) << 2) - size; 864610c32b2SHoratiu Vultur 865610c32b2SHoratiu Vultur for (idx = 0, ridx = size - 1; idx < size; ++idx, --ridx) { 866610c32b2SHoratiu Vultur wstart = (idx >> 2) << 2; 867610c32b2SHoratiu Vultur nidx = wstart + 3 - (idx & 0x3); 868610c32b2SHoratiu Vultur if (nidx >= size) 869610c32b2SHoratiu Vultur nidx -= tail_bytes; 870610c32b2SHoratiu Vultur dst[nidx] = src[ridx]; 871610c32b2SHoratiu Vultur } 872610c32b2SHoratiu Vultur 873610c32b2SHoratiu Vultur vcap_apply_width(dst, width, size); 874610c32b2SHoratiu Vultur } 875610c32b2SHoratiu Vultur 876610c32b2SHoratiu Vultur static void vcap_copy_action_bit_field(struct vcap_u1_action *field, u8 *value) 877610c32b2SHoratiu Vultur { 878610c32b2SHoratiu Vultur field->value = (*value) & 0x1; 879610c32b2SHoratiu Vultur } 880610c32b2SHoratiu Vultur 881610c32b2SHoratiu Vultur static void vcap_copy_limited_actionfield(u8 *dstvalue, u8 *srcvalue, 882610c32b2SHoratiu Vultur int width, int bytes) 883610c32b2SHoratiu Vultur { 884610c32b2SHoratiu Vultur memcpy(dstvalue, srcvalue, bytes); 885610c32b2SHoratiu Vultur vcap_apply_width(dstvalue, width, bytes); 886610c32b2SHoratiu Vultur } 887610c32b2SHoratiu Vultur 888610c32b2SHoratiu Vultur static void vcap_copy_to_client_actionfield(struct vcap_rule_internal *ri, 889610c32b2SHoratiu Vultur struct vcap_client_actionfield *field, 890610c32b2SHoratiu Vultur u8 *value, u16 width) 891610c32b2SHoratiu Vultur { 892610c32b2SHoratiu Vultur int field_size = actionfield_size_table[field->ctrl.type]; 893610c32b2SHoratiu Vultur 894610c32b2SHoratiu Vultur if (ri->admin->w32be) { 895610c32b2SHoratiu Vultur switch (field->ctrl.type) { 896610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 897610c32b2SHoratiu Vultur vcap_copy_action_bit_field(&field->data.u1, value); 898610c32b2SHoratiu Vultur break; 899610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 900610c32b2SHoratiu Vultur vcap_copy_limited_actionfield((u8 *)&field->data.u32.value, 901610c32b2SHoratiu Vultur value, 902610c32b2SHoratiu Vultur width, field_size); 903610c32b2SHoratiu Vultur break; 904610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 905610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.value, value, 906610c32b2SHoratiu Vultur field_size, width); 907610c32b2SHoratiu Vultur break; 908610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 909610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.value, value, 910610c32b2SHoratiu Vultur field_size, width); 911610c32b2SHoratiu Vultur break; 912610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 913610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.value, value, 914610c32b2SHoratiu Vultur field_size, width); 915610c32b2SHoratiu Vultur break; 916610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 917610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.value, value, 918610c32b2SHoratiu Vultur field_size, width); 919610c32b2SHoratiu Vultur break; 920610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 921610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.value, value, 922610c32b2SHoratiu Vultur field_size, width); 923610c32b2SHoratiu Vultur break; 924610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 925610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.value, value, 926610c32b2SHoratiu Vultur field_size, width); 927610c32b2SHoratiu Vultur break; 928610c32b2SHoratiu Vultur }; 929610c32b2SHoratiu Vultur } else { 930610c32b2SHoratiu Vultur switch (field->ctrl.type) { 931610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 932610c32b2SHoratiu Vultur vcap_copy_action_bit_field(&field->data.u1, value); 933610c32b2SHoratiu Vultur break; 934610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 935610c32b2SHoratiu Vultur vcap_copy_limited_actionfield((u8 *)&field->data.u32.value, 936610c32b2SHoratiu Vultur value, 937610c32b2SHoratiu Vultur width, field_size); 938610c32b2SHoratiu Vultur break; 939610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 940610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u48.value, 941610c32b2SHoratiu Vultur value, 942610c32b2SHoratiu Vultur width, field_size); 943610c32b2SHoratiu Vultur break; 944610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 945610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u56.value, 946610c32b2SHoratiu Vultur value, 947610c32b2SHoratiu Vultur width, field_size); 948610c32b2SHoratiu Vultur break; 949610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 950610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u64.value, 951610c32b2SHoratiu Vultur value, 952610c32b2SHoratiu Vultur width, field_size); 953610c32b2SHoratiu Vultur break; 954610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 955610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u72.value, 956610c32b2SHoratiu Vultur value, 957610c32b2SHoratiu Vultur width, field_size); 958610c32b2SHoratiu Vultur break; 959610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 960610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u112.value, 961610c32b2SHoratiu Vultur value, 962610c32b2SHoratiu Vultur width, field_size); 963610c32b2SHoratiu Vultur break; 964610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 965610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u128.value, 966610c32b2SHoratiu Vultur value, 967610c32b2SHoratiu Vultur width, field_size); 968610c32b2SHoratiu Vultur break; 969610c32b2SHoratiu Vultur }; 970610c32b2SHoratiu Vultur } 971610c32b2SHoratiu Vultur } 972610c32b2SHoratiu Vultur 973610c32b2SHoratiu Vultur static void vcap_copy_key_bit_field(struct vcap_u1_key *field, 974610c32b2SHoratiu Vultur u8 *value, u8 *mask) 975610c32b2SHoratiu Vultur { 976610c32b2SHoratiu Vultur field->value = (*value) & 0x1; 977610c32b2SHoratiu Vultur field->mask = (*mask) & 0x1; 978610c32b2SHoratiu Vultur } 979610c32b2SHoratiu Vultur 980610c32b2SHoratiu Vultur static void vcap_copy_limited_keyfield(u8 *dstvalue, u8 *dstmask, 981610c32b2SHoratiu Vultur u8 *srcvalue, u8 *srcmask, 982610c32b2SHoratiu Vultur int width, int bytes) 983610c32b2SHoratiu Vultur { 984610c32b2SHoratiu Vultur memcpy(dstvalue, srcvalue, bytes); 985610c32b2SHoratiu Vultur vcap_apply_width(dstvalue, width, bytes); 986610c32b2SHoratiu Vultur memcpy(dstmask, srcmask, bytes); 987610c32b2SHoratiu Vultur vcap_apply_width(dstmask, width, bytes); 988610c32b2SHoratiu Vultur } 989610c32b2SHoratiu Vultur 990610c32b2SHoratiu Vultur static void vcap_copy_to_client_keyfield(struct vcap_rule_internal *ri, 991610c32b2SHoratiu Vultur struct vcap_client_keyfield *field, 992610c32b2SHoratiu Vultur u8 *value, u8 *mask, u16 width) 993610c32b2SHoratiu Vultur { 994610c32b2SHoratiu Vultur int field_size = keyfield_size_table[field->ctrl.type] / 2; 995610c32b2SHoratiu Vultur 996610c32b2SHoratiu Vultur if (ri->admin->w32be) { 997610c32b2SHoratiu Vultur switch (field->ctrl.type) { 998610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 999610c32b2SHoratiu Vultur vcap_copy_key_bit_field(&field->data.u1, value, mask); 1000610c32b2SHoratiu Vultur break; 1001610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1002610c32b2SHoratiu Vultur vcap_copy_limited_keyfield((u8 *)&field->data.u32.value, 1003610c32b2SHoratiu Vultur (u8 *)&field->data.u32.mask, 1004610c32b2SHoratiu Vultur value, mask, 1005610c32b2SHoratiu Vultur width, field_size); 1006610c32b2SHoratiu Vultur break; 1007610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1008610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.value, value, 1009610c32b2SHoratiu Vultur field_size, width); 1010610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.mask, mask, 1011610c32b2SHoratiu Vultur field_size, width); 1012610c32b2SHoratiu Vultur break; 1013610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1014610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.value, value, 1015610c32b2SHoratiu Vultur field_size, width); 1016610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.mask, mask, 1017610c32b2SHoratiu Vultur field_size, width); 1018610c32b2SHoratiu Vultur break; 1019610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1020610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.value, value, 1021610c32b2SHoratiu Vultur field_size, width); 1022610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.mask, mask, 1023610c32b2SHoratiu Vultur field_size, width); 1024610c32b2SHoratiu Vultur break; 1025610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1026610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.value, value, 1027610c32b2SHoratiu Vultur field_size, width); 1028610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.mask, mask, 1029610c32b2SHoratiu Vultur field_size, width); 1030610c32b2SHoratiu Vultur break; 1031610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1032610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.value, value, 1033610c32b2SHoratiu Vultur field_size, width); 1034610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.mask, mask, 1035610c32b2SHoratiu Vultur field_size, width); 1036610c32b2SHoratiu Vultur break; 1037610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1038610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.value, value, 1039610c32b2SHoratiu Vultur field_size, width); 1040610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.mask, mask, 1041610c32b2SHoratiu Vultur field_size, width); 1042610c32b2SHoratiu Vultur break; 1043610c32b2SHoratiu Vultur }; 1044610c32b2SHoratiu Vultur } else { 1045610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1046610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1047610c32b2SHoratiu Vultur vcap_copy_key_bit_field(&field->data.u1, value, mask); 1048610c32b2SHoratiu Vultur break; 1049610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1050610c32b2SHoratiu Vultur vcap_copy_limited_keyfield((u8 *)&field->data.u32.value, 1051610c32b2SHoratiu Vultur (u8 *)&field->data.u32.mask, 1052610c32b2SHoratiu Vultur value, mask, 1053610c32b2SHoratiu Vultur width, field_size); 1054610c32b2SHoratiu Vultur break; 1055610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1056610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u48.value, 1057610c32b2SHoratiu Vultur field->data.u48.mask, 1058610c32b2SHoratiu Vultur value, mask, 1059610c32b2SHoratiu Vultur width, field_size); 1060610c32b2SHoratiu Vultur break; 1061610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1062610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u56.value, 1063610c32b2SHoratiu Vultur field->data.u56.mask, 1064610c32b2SHoratiu Vultur value, mask, 1065610c32b2SHoratiu Vultur width, field_size); 1066610c32b2SHoratiu Vultur break; 1067610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1068610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u64.value, 1069610c32b2SHoratiu Vultur field->data.u64.mask, 1070610c32b2SHoratiu Vultur value, mask, 1071610c32b2SHoratiu Vultur width, field_size); 1072610c32b2SHoratiu Vultur break; 1073610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1074610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u72.value, 1075610c32b2SHoratiu Vultur field->data.u72.mask, 1076610c32b2SHoratiu Vultur value, mask, 1077610c32b2SHoratiu Vultur width, field_size); 1078610c32b2SHoratiu Vultur break; 1079610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1080610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u112.value, 1081610c32b2SHoratiu Vultur field->data.u112.mask, 1082610c32b2SHoratiu Vultur value, mask, 1083610c32b2SHoratiu Vultur width, field_size); 1084610c32b2SHoratiu Vultur break; 1085610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1086610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u128.value, 1087610c32b2SHoratiu Vultur field->data.u128.mask, 1088610c32b2SHoratiu Vultur value, mask, 1089610c32b2SHoratiu Vultur width, field_size); 1090610c32b2SHoratiu Vultur break; 1091610c32b2SHoratiu Vultur }; 1092610c32b2SHoratiu Vultur } 1093610c32b2SHoratiu Vultur } 1094610c32b2SHoratiu Vultur 1095610c32b2SHoratiu Vultur static void vcap_rule_alloc_keyfield(struct vcap_rule_internal *ri, 1096610c32b2SHoratiu Vultur const struct vcap_field *keyfield, 1097610c32b2SHoratiu Vultur enum vcap_key_field key, 1098610c32b2SHoratiu Vultur u8 *value, u8 *mask) 1099610c32b2SHoratiu Vultur { 1100610c32b2SHoratiu Vultur struct vcap_client_keyfield *field; 1101610c32b2SHoratiu Vultur 1102610c32b2SHoratiu Vultur field = kzalloc(sizeof(*field), GFP_KERNEL); 1103610c32b2SHoratiu Vultur if (!field) 1104610c32b2SHoratiu Vultur return; 1105610c32b2SHoratiu Vultur INIT_LIST_HEAD(&field->ctrl.list); 1106610c32b2SHoratiu Vultur field->ctrl.key = key; 1107610c32b2SHoratiu Vultur field->ctrl.type = keyfield->type; 1108610c32b2SHoratiu Vultur vcap_copy_to_client_keyfield(ri, field, value, mask, keyfield->width); 1109610c32b2SHoratiu Vultur list_add_tail(&field->ctrl.list, &ri->data.keyfields); 1110610c32b2SHoratiu Vultur } 1111610c32b2SHoratiu Vultur 1112610c32b2SHoratiu Vultur /* Read key data from a VCAP address and discover if there is a rule keyset 1113610c32b2SHoratiu Vultur * here 1114610c32b2SHoratiu Vultur */ 1115610c32b2SHoratiu Vultur static bool 1116610c32b2SHoratiu Vultur vcap_verify_actionstream_actionset(struct vcap_control *vctrl, 1117610c32b2SHoratiu Vultur enum vcap_type vt, 1118610c32b2SHoratiu Vultur u32 *actionstream, 1119610c32b2SHoratiu Vultur enum vcap_actionfield_set actionset) 1120610c32b2SHoratiu Vultur { 1121610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1122610c32b2SHoratiu Vultur const struct vcap_field *fields; 1123610c32b2SHoratiu Vultur const struct vcap_set *info; 1124610c32b2SHoratiu Vultur 1125610c32b2SHoratiu Vultur if (vcap_actionfield_count(vctrl, vt, actionset) == 0) 1126610c32b2SHoratiu Vultur return false; 1127610c32b2SHoratiu Vultur 1128610c32b2SHoratiu Vultur info = vcap_actionfieldset(vctrl, vt, actionset); 1129610c32b2SHoratiu Vultur /* Check that the actionset is valid */ 1130610c32b2SHoratiu Vultur if (!info) 1131610c32b2SHoratiu Vultur return false; 1132610c32b2SHoratiu Vultur 1133610c32b2SHoratiu Vultur /* a type_id of value -1 means that there is no type field */ 1134610c32b2SHoratiu Vultur if (info->type_id == (u8)-1) 1135610c32b2SHoratiu Vultur return true; 1136610c32b2SHoratiu Vultur 1137610c32b2SHoratiu Vultur /* Get a valid typegroup for the specific actionset */ 1138610c32b2SHoratiu Vultur tgt = vcap_actionfield_typegroup(vctrl, vt, actionset); 1139610c32b2SHoratiu Vultur if (!tgt) 1140610c32b2SHoratiu Vultur return false; 1141610c32b2SHoratiu Vultur 1142610c32b2SHoratiu Vultur fields = vcap_actionfields(vctrl, vt, actionset); 1143610c32b2SHoratiu Vultur if (!fields) 1144610c32b2SHoratiu Vultur return false; 1145610c32b2SHoratiu Vultur 1146610c32b2SHoratiu Vultur /* Later this will be expanded with a check of the type id */ 1147610c32b2SHoratiu Vultur return true; 1148610c32b2SHoratiu Vultur } 1149610c32b2SHoratiu Vultur 1150610c32b2SHoratiu Vultur /* Find the subword width of the action typegroup that matches the stream data 1151610c32b2SHoratiu Vultur */ 1152610c32b2SHoratiu Vultur static int vcap_find_actionstream_typegroup_sw(struct vcap_control *vctrl, 1153610c32b2SHoratiu Vultur enum vcap_type vt, u32 *stream, 1154610c32b2SHoratiu Vultur int sw_max) 1155610c32b2SHoratiu Vultur { 1156610c32b2SHoratiu Vultur const struct vcap_typegroup **tgt; 1157610c32b2SHoratiu Vultur int sw_idx, res; 1158610c32b2SHoratiu Vultur 1159610c32b2SHoratiu Vultur tgt = vctrl->vcaps[vt].actionfield_set_typegroups; 1160610c32b2SHoratiu Vultur /* Try the longest subword match first */ 1161610c32b2SHoratiu Vultur for (sw_idx = vctrl->vcaps[vt].sw_count; sw_idx >= 0; sw_idx--) { 1162610c32b2SHoratiu Vultur if (!tgt[sw_idx]) 1163610c32b2SHoratiu Vultur continue; 1164610c32b2SHoratiu Vultur res = vcap_verify_typegroups(stream, vctrl->vcaps[vt].act_width, 1165610c32b2SHoratiu Vultur tgt[sw_idx], false, sw_max); 1166610c32b2SHoratiu Vultur if (res == 0) 1167610c32b2SHoratiu Vultur return sw_idx; 1168610c32b2SHoratiu Vultur } 1169610c32b2SHoratiu Vultur return -EINVAL; 1170610c32b2SHoratiu Vultur } 1171610c32b2SHoratiu Vultur 1172610c32b2SHoratiu Vultur /* Verify that the typegroup information, subword count, actionset and type id 1173610c32b2SHoratiu Vultur * are in sync and correct, return the actionset 1174610c32b2SHoratiu Vultur */ 1175610c32b2SHoratiu Vultur static enum vcap_actionfield_set 1176610c32b2SHoratiu Vultur vcap_find_actionstream_actionset(struct vcap_control *vctrl, 1177610c32b2SHoratiu Vultur enum vcap_type vt, 1178610c32b2SHoratiu Vultur u32 *stream, 1179610c32b2SHoratiu Vultur int sw_max) 1180610c32b2SHoratiu Vultur { 1181610c32b2SHoratiu Vultur const struct vcap_set *actionfield_set; 1182610c32b2SHoratiu Vultur int sw_count, idx; 1183610c32b2SHoratiu Vultur bool res; 1184610c32b2SHoratiu Vultur 1185610c32b2SHoratiu Vultur sw_count = vcap_find_actionstream_typegroup_sw(vctrl, vt, stream, 1186610c32b2SHoratiu Vultur sw_max); 1187610c32b2SHoratiu Vultur if (sw_count < 0) 1188610c32b2SHoratiu Vultur return sw_count; 1189610c32b2SHoratiu Vultur 1190610c32b2SHoratiu Vultur actionfield_set = vctrl->vcaps[vt].actionfield_set; 1191610c32b2SHoratiu Vultur for (idx = 0; idx < vctrl->vcaps[vt].actionfield_set_size; ++idx) { 1192610c32b2SHoratiu Vultur if (actionfield_set[idx].sw_per_item != sw_count) 1193610c32b2SHoratiu Vultur continue; 1194610c32b2SHoratiu Vultur 1195610c32b2SHoratiu Vultur res = vcap_verify_actionstream_actionset(vctrl, vt, 1196610c32b2SHoratiu Vultur stream, idx); 1197610c32b2SHoratiu Vultur if (res) 1198610c32b2SHoratiu Vultur return idx; 1199610c32b2SHoratiu Vultur } 1200610c32b2SHoratiu Vultur return -EINVAL; 1201610c32b2SHoratiu Vultur } 1202610c32b2SHoratiu Vultur 1203610c32b2SHoratiu Vultur /* Store action value in an element in a list for the client */ 1204610c32b2SHoratiu Vultur static void vcap_rule_alloc_actionfield(struct vcap_rule_internal *ri, 1205610c32b2SHoratiu Vultur const struct vcap_field *actionfield, 1206610c32b2SHoratiu Vultur enum vcap_action_field action, 1207610c32b2SHoratiu Vultur u8 *value) 1208610c32b2SHoratiu Vultur { 1209610c32b2SHoratiu Vultur struct vcap_client_actionfield *field; 1210610c32b2SHoratiu Vultur 1211610c32b2SHoratiu Vultur field = kzalloc(sizeof(*field), GFP_KERNEL); 1212610c32b2SHoratiu Vultur if (!field) 1213610c32b2SHoratiu Vultur return; 1214610c32b2SHoratiu Vultur INIT_LIST_HEAD(&field->ctrl.list); 1215610c32b2SHoratiu Vultur field->ctrl.action = action; 1216610c32b2SHoratiu Vultur field->ctrl.type = actionfield->type; 1217610c32b2SHoratiu Vultur vcap_copy_to_client_actionfield(ri, field, value, actionfield->width); 1218610c32b2SHoratiu Vultur list_add_tail(&field->ctrl.list, &ri->data.actionfields); 1219610c32b2SHoratiu Vultur } 1220610c32b2SHoratiu Vultur 1221610c32b2SHoratiu Vultur static int vcap_decode_actionset(struct vcap_rule_internal *ri) 1222610c32b2SHoratiu Vultur { 1223610c32b2SHoratiu Vultur struct vcap_control *vctrl = ri->vctrl; 1224610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1225610c32b2SHoratiu Vultur const struct vcap_field *actionfield; 1226610c32b2SHoratiu Vultur enum vcap_actionfield_set actionset; 1227610c32b2SHoratiu Vultur enum vcap_type vt = admin->vtype; 1228610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1229610c32b2SHoratiu Vultur struct vcap_stream_iter iter; 1230610c32b2SHoratiu Vultur int idx, res, actfield_count; 1231610c32b2SHoratiu Vultur u32 *actstream; 1232610c32b2SHoratiu Vultur u8 value[16]; 1233610c32b2SHoratiu Vultur 1234610c32b2SHoratiu Vultur actstream = admin->cache.actionstream; 1235610c32b2SHoratiu Vultur res = vcap_find_actionstream_actionset(vctrl, vt, actstream, 0); 1236610c32b2SHoratiu Vultur if (res < 0) { 1237610c32b2SHoratiu Vultur pr_err("%s:%d: could not find valid actionset: %d\n", 1238610c32b2SHoratiu Vultur __func__, __LINE__, res); 1239610c32b2SHoratiu Vultur return -EINVAL; 1240610c32b2SHoratiu Vultur } 1241610c32b2SHoratiu Vultur actionset = res; 1242610c32b2SHoratiu Vultur actfield_count = vcap_actionfield_count(vctrl, vt, actionset); 1243610c32b2SHoratiu Vultur actionfield = vcap_actionfields(vctrl, vt, actionset); 1244610c32b2SHoratiu Vultur tgt = vcap_actionfield_typegroup(vctrl, vt, actionset); 1245610c32b2SHoratiu Vultur /* Start decoding the stream */ 1246610c32b2SHoratiu Vultur for (idx = 0; idx < actfield_count; ++idx) { 1247610c32b2SHoratiu Vultur if (actionfield[idx].width <= 0) 1248610c32b2SHoratiu Vultur continue; 1249610c32b2SHoratiu Vultur /* Get the action */ 1250610c32b2SHoratiu Vultur memset(value, 0, DIV_ROUND_UP(actionfield[idx].width, 8)); 1251610c32b2SHoratiu Vultur vcap_iter_init(&iter, vctrl->vcaps[vt].act_width, tgt, 1252610c32b2SHoratiu Vultur actionfield[idx].offset); 1253610c32b2SHoratiu Vultur vcap_decode_field(actstream, &iter, actionfield[idx].width, 1254610c32b2SHoratiu Vultur value); 1255610c32b2SHoratiu Vultur /* Skip if no bits are set */ 1256610c32b2SHoratiu Vultur if (vcap_bitarray_zero(actionfield[idx].width, value)) 1257610c32b2SHoratiu Vultur continue; 1258610c32b2SHoratiu Vultur vcap_rule_alloc_actionfield(ri, &actionfield[idx], idx, value); 1259610c32b2SHoratiu Vultur /* Later the action id will also be checked */ 1260610c32b2SHoratiu Vultur } 1261610c32b2SHoratiu Vultur return vcap_set_rule_set_actionset((struct vcap_rule *)ri, actionset); 1262610c32b2SHoratiu Vultur } 1263610c32b2SHoratiu Vultur 1264610c32b2SHoratiu Vultur static int vcap_decode_keyset(struct vcap_rule_internal *ri) 1265610c32b2SHoratiu Vultur { 1266610c32b2SHoratiu Vultur struct vcap_control *vctrl = ri->vctrl; 1267610c32b2SHoratiu Vultur struct vcap_stream_iter kiter, miter; 1268610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1269610c32b2SHoratiu Vultur enum vcap_keyfield_set keysets[10]; 1270610c32b2SHoratiu Vultur const struct vcap_field *keyfield; 1271610c32b2SHoratiu Vultur enum vcap_type vt = admin->vtype; 1272610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1273610c32b2SHoratiu Vultur struct vcap_keyset_list matches; 1274610c32b2SHoratiu Vultur enum vcap_keyfield_set keyset; 1275610c32b2SHoratiu Vultur int idx, res, keyfield_count; 1276610c32b2SHoratiu Vultur u32 *maskstream; 1277610c32b2SHoratiu Vultur u32 *keystream; 1278610c32b2SHoratiu Vultur u8 value[16]; 1279610c32b2SHoratiu Vultur u8 mask[16]; 1280610c32b2SHoratiu Vultur 1281610c32b2SHoratiu Vultur keystream = admin->cache.keystream; 1282610c32b2SHoratiu Vultur maskstream = admin->cache.maskstream; 1283610c32b2SHoratiu Vultur matches.keysets = keysets; 1284610c32b2SHoratiu Vultur matches.cnt = 0; 1285610c32b2SHoratiu Vultur matches.max = ARRAY_SIZE(keysets); 1286610c32b2SHoratiu Vultur res = vcap_find_keystream_keysets(vctrl, vt, keystream, maskstream, 1287610c32b2SHoratiu Vultur false, 0, &matches); 1288610c32b2SHoratiu Vultur if (res < 0) { 1289610c32b2SHoratiu Vultur pr_err("%s:%d: could not find valid keysets: %d\n", 1290610c32b2SHoratiu Vultur __func__, __LINE__, res); 1291610c32b2SHoratiu Vultur return -EINVAL; 1292610c32b2SHoratiu Vultur } 1293610c32b2SHoratiu Vultur keyset = matches.keysets[0]; 1294610c32b2SHoratiu Vultur keyfield_count = vcap_keyfield_count(vctrl, vt, keyset); 1295610c32b2SHoratiu Vultur keyfield = vcap_keyfields(vctrl, vt, keyset); 1296610c32b2SHoratiu Vultur tgt = vcap_keyfield_typegroup(vctrl, vt, keyset); 1297610c32b2SHoratiu Vultur /* Start decoding the streams */ 1298610c32b2SHoratiu Vultur for (idx = 0; idx < keyfield_count; ++idx) { 1299610c32b2SHoratiu Vultur if (keyfield[idx].width <= 0) 1300610c32b2SHoratiu Vultur continue; 1301610c32b2SHoratiu Vultur /* First get the mask */ 1302610c32b2SHoratiu Vultur memset(mask, 0, DIV_ROUND_UP(keyfield[idx].width, 8)); 1303610c32b2SHoratiu Vultur vcap_iter_init(&miter, vctrl->vcaps[vt].sw_width, tgt, 1304610c32b2SHoratiu Vultur keyfield[idx].offset); 1305610c32b2SHoratiu Vultur vcap_decode_field(maskstream, &miter, keyfield[idx].width, 1306610c32b2SHoratiu Vultur mask); 1307610c32b2SHoratiu Vultur /* Skip if no mask bits are set */ 1308610c32b2SHoratiu Vultur if (vcap_bitarray_zero(keyfield[idx].width, mask)) 1309610c32b2SHoratiu Vultur continue; 1310610c32b2SHoratiu Vultur /* Get the key */ 1311610c32b2SHoratiu Vultur memset(value, 0, DIV_ROUND_UP(keyfield[idx].width, 8)); 1312610c32b2SHoratiu Vultur vcap_iter_init(&kiter, vctrl->vcaps[vt].sw_width, tgt, 1313610c32b2SHoratiu Vultur keyfield[idx].offset); 1314610c32b2SHoratiu Vultur vcap_decode_field(keystream, &kiter, keyfield[idx].width, 1315610c32b2SHoratiu Vultur value); 1316610c32b2SHoratiu Vultur vcap_rule_alloc_keyfield(ri, &keyfield[idx], idx, value, mask); 1317610c32b2SHoratiu Vultur } 1318610c32b2SHoratiu Vultur return vcap_set_rule_set_keyset((struct vcap_rule *)ri, keyset); 1319610c32b2SHoratiu Vultur } 1320610c32b2SHoratiu Vultur 1321610c32b2SHoratiu Vultur /* Read VCAP content into the VCAP cache */ 1322610c32b2SHoratiu Vultur static int vcap_read_rule(struct vcap_rule_internal *ri) 1323610c32b2SHoratiu Vultur { 1324610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1325610c32b2SHoratiu Vultur int sw_idx, ent_idx = 0, act_idx = 0; 1326610c32b2SHoratiu Vultur u32 addr = ri->addr; 1327610c32b2SHoratiu Vultur 1328610c32b2SHoratiu Vultur if (!ri->size || !ri->keyset_sw_regs || !ri->actionset_sw_regs) { 1329610c32b2SHoratiu Vultur pr_err("%s:%d: rule is empty\n", __func__, __LINE__); 1330610c32b2SHoratiu Vultur return -EINVAL; 1331610c32b2SHoratiu Vultur } 1332610c32b2SHoratiu Vultur vcap_erase_cache(ri); 1333610c32b2SHoratiu Vultur /* Use the values in the streams to read the VCAP cache */ 1334610c32b2SHoratiu Vultur for (sw_idx = 0; sw_idx < ri->size; sw_idx++, addr++) { 1335610c32b2SHoratiu Vultur ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_READ, 1336610c32b2SHoratiu Vultur VCAP_SEL_ALL, addr); 1337610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1338610c32b2SHoratiu Vultur VCAP_SEL_ENTRY, ent_idx, 1339610c32b2SHoratiu Vultur ri->keyset_sw_regs); 1340610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1341610c32b2SHoratiu Vultur VCAP_SEL_ACTION, act_idx, 1342610c32b2SHoratiu Vultur ri->actionset_sw_regs); 1343610c32b2SHoratiu Vultur if (sw_idx == 0) 1344610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1345610c32b2SHoratiu Vultur VCAP_SEL_COUNTER, 1346610c32b2SHoratiu Vultur ri->counter_id, 0); 1347610c32b2SHoratiu Vultur ent_idx += ri->keyset_sw_regs; 1348610c32b2SHoratiu Vultur act_idx += ri->actionset_sw_regs; 1349610c32b2SHoratiu Vultur } 1350610c32b2SHoratiu Vultur return 0; 1351610c32b2SHoratiu Vultur } 1352610c32b2SHoratiu Vultur 13538e10490bSSteen Hegelund /* Write VCAP cache content to the VCAP HW instance */ 13548e10490bSSteen Hegelund static int vcap_write_rule(struct vcap_rule_internal *ri) 13558e10490bSSteen Hegelund { 13568e10490bSSteen Hegelund struct vcap_admin *admin = ri->admin; 13578e10490bSSteen Hegelund int sw_idx, ent_idx = 0, act_idx = 0; 13588e10490bSSteen Hegelund u32 addr = ri->addr; 13598e10490bSSteen Hegelund 13608e10490bSSteen Hegelund if (!ri->size || !ri->keyset_sw_regs || !ri->actionset_sw_regs) { 13618e10490bSSteen Hegelund pr_err("%s:%d: rule is empty\n", __func__, __LINE__); 13628e10490bSSteen Hegelund return -EINVAL; 13638e10490bSSteen Hegelund } 13648e10490bSSteen Hegelund /* Use the values in the streams to write the VCAP cache */ 13658e10490bSSteen Hegelund for (sw_idx = 0; sw_idx < ri->size; sw_idx++, addr++) { 13668e10490bSSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, 13678e10490bSSteen Hegelund VCAP_SEL_ENTRY, ent_idx, 13688e10490bSSteen Hegelund ri->keyset_sw_regs); 13698e10490bSSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, 13708e10490bSSteen Hegelund VCAP_SEL_ACTION, act_idx, 13718e10490bSSteen Hegelund ri->actionset_sw_regs); 13728e10490bSSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_WRITE, 13738e10490bSSteen Hegelund VCAP_SEL_ALL, addr); 13748e10490bSSteen Hegelund ent_idx += ri->keyset_sw_regs; 13758e10490bSSteen Hegelund act_idx += ri->actionset_sw_regs; 13768e10490bSSteen Hegelund } 13778e10490bSSteen Hegelund return 0; 13788e10490bSSteen Hegelund } 13798e10490bSSteen Hegelund 1380f13230a4SSteen Hegelund static int vcap_write_counter(struct vcap_rule_internal *ri, 1381f13230a4SSteen Hegelund struct vcap_counter *ctr) 1382f13230a4SSteen Hegelund { 1383f13230a4SSteen Hegelund struct vcap_admin *admin = ri->admin; 1384f13230a4SSteen Hegelund 1385f13230a4SSteen Hegelund admin->cache.counter = ctr->value; 1386f13230a4SSteen Hegelund admin->cache.sticky = ctr->sticky; 1387f13230a4SSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, VCAP_SEL_COUNTER, 1388f13230a4SSteen Hegelund ri->counter_id, 0); 1389f13230a4SSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_WRITE, 1390f13230a4SSteen Hegelund VCAP_SEL_COUNTER, ri->addr); 1391f13230a4SSteen Hegelund return 0; 1392f13230a4SSteen Hegelund } 1393f13230a4SSteen Hegelund 13947de1dcadSSteen Hegelund /* Convert a chain id to a VCAP lookup index */ 13957de1dcadSSteen Hegelund int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid) 13967de1dcadSSteen Hegelund { 13977de1dcadSSteen Hegelund int lookup_first = admin->vinst * admin->lookups_per_instance; 13987de1dcadSSteen Hegelund int lookup_last = lookup_first + admin->lookups_per_instance; 13997de1dcadSSteen Hegelund int cid_next = admin->first_cid + VCAP_CID_LOOKUP_SIZE; 14007de1dcadSSteen Hegelund int cid = admin->first_cid; 14017de1dcadSSteen Hegelund int lookup; 14027de1dcadSSteen Hegelund 14037de1dcadSSteen Hegelund for (lookup = lookup_first; lookup < lookup_last; ++lookup, 14047de1dcadSSteen Hegelund cid += VCAP_CID_LOOKUP_SIZE, cid_next += VCAP_CID_LOOKUP_SIZE) 14057de1dcadSSteen Hegelund if (cur_cid >= cid && cur_cid < cid_next) 14067de1dcadSSteen Hegelund return lookup; 14077de1dcadSSteen Hegelund return 0; 14087de1dcadSSteen Hegelund } 14097de1dcadSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_chain_id_to_lookup); 14107de1dcadSSteen Hegelund 1411c9da1ac1SSteen Hegelund /* Lookup a vcap instance using chain id */ 1412c9da1ac1SSteen Hegelund struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid) 1413c9da1ac1SSteen Hegelund { 1414c9da1ac1SSteen Hegelund struct vcap_admin *admin; 1415c9da1ac1SSteen Hegelund 14168e10490bSSteen Hegelund if (vcap_api_check(vctrl)) 14178e10490bSSteen Hegelund return NULL; 14188e10490bSSteen Hegelund 1419c9da1ac1SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 1420c9da1ac1SSteen Hegelund if (cid >= admin->first_cid && cid <= admin->last_cid) 1421c9da1ac1SSteen Hegelund return admin; 1422c9da1ac1SSteen Hegelund } 1423c9da1ac1SSteen Hegelund return NULL; 1424c9da1ac1SSteen Hegelund } 1425c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_find_admin); 1426c9da1ac1SSteen Hegelund 1427392d0ab0SSteen Hegelund /* Is the next chain id in the following lookup, possible in another VCAP */ 1428392d0ab0SSteen Hegelund bool vcap_is_next_lookup(struct vcap_control *vctrl, int cur_cid, int next_cid) 1429392d0ab0SSteen Hegelund { 1430392d0ab0SSteen Hegelund struct vcap_admin *admin, *next_admin; 1431392d0ab0SSteen Hegelund int lookup, next_lookup; 1432392d0ab0SSteen Hegelund 1433392d0ab0SSteen Hegelund /* The offset must be at least one lookup */ 1434392d0ab0SSteen Hegelund if (next_cid < cur_cid + VCAP_CID_LOOKUP_SIZE) 1435392d0ab0SSteen Hegelund return false; 1436392d0ab0SSteen Hegelund 1437392d0ab0SSteen Hegelund if (vcap_api_check(vctrl)) 1438392d0ab0SSteen Hegelund return false; 1439392d0ab0SSteen Hegelund 1440392d0ab0SSteen Hegelund admin = vcap_find_admin(vctrl, cur_cid); 1441392d0ab0SSteen Hegelund if (!admin) 1442392d0ab0SSteen Hegelund return false; 1443392d0ab0SSteen Hegelund 1444392d0ab0SSteen Hegelund /* If no VCAP contains the next chain, the next chain must be beyond 1445392d0ab0SSteen Hegelund * the last chain in the current VCAP 1446392d0ab0SSteen Hegelund */ 1447392d0ab0SSteen Hegelund next_admin = vcap_find_admin(vctrl, next_cid); 1448392d0ab0SSteen Hegelund if (!next_admin) 1449392d0ab0SSteen Hegelund return next_cid > admin->last_cid; 1450392d0ab0SSteen Hegelund 1451392d0ab0SSteen Hegelund lookup = vcap_chain_id_to_lookup(admin, cur_cid); 1452392d0ab0SSteen Hegelund next_lookup = vcap_chain_id_to_lookup(next_admin, next_cid); 1453392d0ab0SSteen Hegelund 1454392d0ab0SSteen Hegelund /* Next lookup must be the following lookup */ 1455392d0ab0SSteen Hegelund if (admin == next_admin || admin->vtype == next_admin->vtype) 1456392d0ab0SSteen Hegelund return next_lookup == lookup + 1; 1457392d0ab0SSteen Hegelund 1458392d0ab0SSteen Hegelund /* Must be the first lookup in the next VCAP instance */ 1459392d0ab0SSteen Hegelund return next_lookup == 0; 1460392d0ab0SSteen Hegelund } 1461392d0ab0SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_is_next_lookup); 1462392d0ab0SSteen Hegelund 14638e10490bSSteen Hegelund /* Check if there is room for a new rule */ 14648e10490bSSteen Hegelund static int vcap_rule_space(struct vcap_admin *admin, int size) 14658e10490bSSteen Hegelund { 14668e10490bSSteen Hegelund if (admin->last_used_addr - size < admin->first_valid_addr) { 14678e10490bSSteen Hegelund pr_err("%s:%d: No room for rule size: %u, %u\n", 14688e10490bSSteen Hegelund __func__, __LINE__, size, admin->first_valid_addr); 14698e10490bSSteen Hegelund return -ENOSPC; 14708e10490bSSteen Hegelund } 14718e10490bSSteen Hegelund return 0; 14728e10490bSSteen Hegelund } 14738e10490bSSteen Hegelund 14748e10490bSSteen Hegelund /* Add the keyset typefield to the list of rule keyfields */ 14758e10490bSSteen Hegelund static int vcap_add_type_keyfield(struct vcap_rule *rule) 14768e10490bSSteen Hegelund { 14778e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 14788e10490bSSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 14798e10490bSSteen Hegelund enum vcap_type vt = ri->admin->vtype; 14808e10490bSSteen Hegelund const struct vcap_field *fields; 14818e10490bSSteen Hegelund const struct vcap_set *kset; 14828e10490bSSteen Hegelund int ret = -EINVAL; 14838e10490bSSteen Hegelund 14848e10490bSSteen Hegelund kset = vcap_keyfieldset(ri->vctrl, vt, keyset); 14858e10490bSSteen Hegelund if (!kset) 14868e10490bSSteen Hegelund return ret; 14878e10490bSSteen Hegelund if (kset->type_id == (u8)-1) /* No type field is needed */ 14888e10490bSSteen Hegelund return 0; 14898e10490bSSteen Hegelund 14908e10490bSSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 14918e10490bSSteen Hegelund if (!fields) 14928e10490bSSteen Hegelund return -EINVAL; 14938e10490bSSteen Hegelund if (fields[VCAP_KF_TYPE].width > 1) { 14948e10490bSSteen Hegelund ret = vcap_rule_add_key_u32(rule, VCAP_KF_TYPE, 14958e10490bSSteen Hegelund kset->type_id, 0xff); 14968e10490bSSteen Hegelund } else { 14978e10490bSSteen Hegelund if (kset->type_id) 14988e10490bSSteen Hegelund ret = vcap_rule_add_key_bit(rule, VCAP_KF_TYPE, 14998e10490bSSteen Hegelund VCAP_BIT_1); 15008e10490bSSteen Hegelund else 15018e10490bSSteen Hegelund ret = vcap_rule_add_key_bit(rule, VCAP_KF_TYPE, 15028e10490bSSteen Hegelund VCAP_BIT_0); 15038e10490bSSteen Hegelund } 15048e10490bSSteen Hegelund return 0; 15058e10490bSSteen Hegelund } 15068e10490bSSteen Hegelund 1507abc4010dSSteen Hegelund /* Add a keyset to a keyset list */ 1508abc4010dSSteen Hegelund bool vcap_keyset_list_add(struct vcap_keyset_list *keysetlist, 1509abc4010dSSteen Hegelund enum vcap_keyfield_set keyset) 1510abc4010dSSteen Hegelund { 1511abc4010dSSteen Hegelund int idx; 1512abc4010dSSteen Hegelund 1513abc4010dSSteen Hegelund if (keysetlist->cnt < keysetlist->max) { 1514abc4010dSSteen Hegelund /* Avoid duplicates */ 1515abc4010dSSteen Hegelund for (idx = 0; idx < keysetlist->cnt; ++idx) 1516abc4010dSSteen Hegelund if (keysetlist->keysets[idx] == keyset) 1517abc4010dSSteen Hegelund return keysetlist->cnt < keysetlist->max; 1518abc4010dSSteen Hegelund keysetlist->keysets[keysetlist->cnt++] = keyset; 1519abc4010dSSteen Hegelund } 1520abc4010dSSteen Hegelund return keysetlist->cnt < keysetlist->max; 1521abc4010dSSteen Hegelund } 1522abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyset_list_add); 1523abc4010dSSteen Hegelund 1524abc4010dSSteen Hegelund /* map keyset id to a string with the keyset name */ 1525abc4010dSSteen Hegelund const char *vcap_keyset_name(struct vcap_control *vctrl, 1526abc4010dSSteen Hegelund enum vcap_keyfield_set keyset) 1527abc4010dSSteen Hegelund { 1528abc4010dSSteen Hegelund return vctrl->stats->keyfield_set_names[keyset]; 1529abc4010dSSteen Hegelund } 1530abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyset_name); 1531abc4010dSSteen Hegelund 1532abc4010dSSteen Hegelund /* map key field id to a string with the key name */ 1533abc4010dSSteen Hegelund const char *vcap_keyfield_name(struct vcap_control *vctrl, 1534abc4010dSSteen Hegelund enum vcap_key_field key) 1535abc4010dSSteen Hegelund { 1536abc4010dSSteen Hegelund return vctrl->stats->keyfield_names[key]; 1537abc4010dSSteen Hegelund } 1538abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyfield_name); 1539abc4010dSSteen Hegelund 15403a792156SSteen Hegelund /* map actionset id to a string with the actionset name */ 15413a792156SSteen Hegelund const char *vcap_actionset_name(struct vcap_control *vctrl, 15423a792156SSteen Hegelund enum vcap_actionfield_set actionset) 15433a792156SSteen Hegelund { 15443a792156SSteen Hegelund return vctrl->stats->actionfield_set_names[actionset]; 15453a792156SSteen Hegelund } 15463a792156SSteen Hegelund 1547242df4f7SSteen Hegelund /* map action field id to a string with the action name */ 15483a792156SSteen Hegelund const char *vcap_actionfield_name(struct vcap_control *vctrl, 1549242df4f7SSteen Hegelund enum vcap_action_field action) 1550242df4f7SSteen Hegelund { 1551242df4f7SSteen Hegelund return vctrl->stats->actionfield_names[action]; 1552242df4f7SSteen Hegelund } 1553242df4f7SSteen Hegelund 1554abc4010dSSteen Hegelund /* Return the keyfield that matches a key in a keyset */ 1555abc4010dSSteen Hegelund static const struct vcap_field * 1556abc4010dSSteen Hegelund vcap_find_keyset_keyfield(struct vcap_control *vctrl, 1557abc4010dSSteen Hegelund enum vcap_type vtype, 1558abc4010dSSteen Hegelund enum vcap_keyfield_set keyset, 1559abc4010dSSteen Hegelund enum vcap_key_field key) 1560abc4010dSSteen Hegelund { 1561abc4010dSSteen Hegelund const struct vcap_field *fields; 1562abc4010dSSteen Hegelund int idx, count; 1563abc4010dSSteen Hegelund 1564abc4010dSSteen Hegelund fields = vcap_keyfields(vctrl, vtype, keyset); 1565abc4010dSSteen Hegelund if (!fields) 1566abc4010dSSteen Hegelund return NULL; 1567abc4010dSSteen Hegelund 1568abc4010dSSteen Hegelund /* Iterate the keyfields of the keyset */ 1569abc4010dSSteen Hegelund count = vcap_keyfield_count(vctrl, vtype, keyset); 1570abc4010dSSteen Hegelund for (idx = 0; idx < count; ++idx) { 1571abc4010dSSteen Hegelund if (fields[idx].width == 0) 1572abc4010dSSteen Hegelund continue; 1573abc4010dSSteen Hegelund 1574abc4010dSSteen Hegelund if (key == idx) 1575abc4010dSSteen Hegelund return &fields[idx]; 1576abc4010dSSteen Hegelund } 1577abc4010dSSteen Hegelund 1578abc4010dSSteen Hegelund return NULL; 1579abc4010dSSteen Hegelund } 1580abc4010dSSteen Hegelund 1581abc4010dSSteen Hegelund /* Match a list of keys against the keysets available in a vcap type */ 1582465a38a2SSteen Hegelund static bool _vcap_rule_find_keysets(struct vcap_rule_internal *ri, 1583abc4010dSSteen Hegelund struct vcap_keyset_list *matches) 1584abc4010dSSteen Hegelund { 1585abc4010dSSteen Hegelund const struct vcap_client_keyfield *ckf; 1586abc4010dSSteen Hegelund int keyset, found, keycount, map_size; 1587abc4010dSSteen Hegelund const struct vcap_field **map; 1588abc4010dSSteen Hegelund enum vcap_type vtype; 1589abc4010dSSteen Hegelund 1590abc4010dSSteen Hegelund vtype = ri->admin->vtype; 1591abc4010dSSteen Hegelund map = ri->vctrl->vcaps[vtype].keyfield_set_map; 1592abc4010dSSteen Hegelund map_size = ri->vctrl->vcaps[vtype].keyfield_set_size; 1593abc4010dSSteen Hegelund 1594abc4010dSSteen Hegelund /* Get a count of the keyfields we want to match */ 1595abc4010dSSteen Hegelund keycount = 0; 1596abc4010dSSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 1597abc4010dSSteen Hegelund ++keycount; 1598abc4010dSSteen Hegelund 1599abc4010dSSteen Hegelund matches->cnt = 0; 1600abc4010dSSteen Hegelund /* Iterate the keysets of the VCAP */ 1601abc4010dSSteen Hegelund for (keyset = 0; keyset < map_size; ++keyset) { 1602abc4010dSSteen Hegelund if (!map[keyset]) 1603abc4010dSSteen Hegelund continue; 1604abc4010dSSteen Hegelund 1605abc4010dSSteen Hegelund /* Iterate the keys in the rule */ 1606abc4010dSSteen Hegelund found = 0; 1607abc4010dSSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 1608abc4010dSSteen Hegelund if (vcap_find_keyset_keyfield(ri->vctrl, vtype, 1609abc4010dSSteen Hegelund keyset, ckf->ctrl.key)) 1610abc4010dSSteen Hegelund ++found; 1611abc4010dSSteen Hegelund 1612abc4010dSSteen Hegelund /* Save the keyset if all keyfields were found */ 1613abc4010dSSteen Hegelund if (found == keycount) 1614abc4010dSSteen Hegelund if (!vcap_keyset_list_add(matches, keyset)) 1615abc4010dSSteen Hegelund /* bail out when the quota is filled */ 1616abc4010dSSteen Hegelund break; 1617abc4010dSSteen Hegelund } 1618abc4010dSSteen Hegelund 1619abc4010dSSteen Hegelund return matches->cnt > 0; 1620abc4010dSSteen Hegelund } 1621abc4010dSSteen Hegelund 1622465a38a2SSteen Hegelund /* Match a list of keys against the keysets available in a vcap type */ 1623465a38a2SSteen Hegelund bool vcap_rule_find_keysets(struct vcap_rule *rule, 1624465a38a2SSteen Hegelund struct vcap_keyset_list *matches) 1625465a38a2SSteen Hegelund { 1626465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 1627465a38a2SSteen Hegelund 1628465a38a2SSteen Hegelund return _vcap_rule_find_keysets(ri, matches); 1629465a38a2SSteen Hegelund } 1630465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_find_keysets); 1631465a38a2SSteen Hegelund 1632c9da1ac1SSteen Hegelund /* Validate a rule with respect to available port keys */ 1633c9da1ac1SSteen Hegelund int vcap_val_rule(struct vcap_rule *rule, u16 l3_proto) 1634c9da1ac1SSteen Hegelund { 1635c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 1636abc4010dSSteen Hegelund struct vcap_keyset_list matches = {}; 16378e10490bSSteen Hegelund enum vcap_keyfield_set keysets[10]; 16388e10490bSSteen Hegelund int ret; 1639c9da1ac1SSteen Hegelund 16408e10490bSSteen Hegelund ret = vcap_api_check(ri->vctrl); 16418e10490bSSteen Hegelund if (ret) 16428e10490bSSteen Hegelund return ret; 1643c9da1ac1SSteen Hegelund if (!ri->admin) { 1644c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_ADMIN; 1645c9da1ac1SSteen Hegelund return -EINVAL; 1646c9da1ac1SSteen Hegelund } 1647c9da1ac1SSteen Hegelund if (!ri->ndev) { 1648c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_NETDEV; 1649c9da1ac1SSteen Hegelund return -EINVAL; 1650c9da1ac1SSteen Hegelund } 1651abc4010dSSteen Hegelund 1652abc4010dSSteen Hegelund matches.keysets = keysets; 1653abc4010dSSteen Hegelund matches.max = ARRAY_SIZE(keysets); 1654c9da1ac1SSteen Hegelund if (ri->data.keyset == VCAP_KFS_NO_VALUE) { 1655abc4010dSSteen Hegelund /* Iterate over rule keyfields and select keysets that fits */ 1656465a38a2SSteen Hegelund if (!_vcap_rule_find_keysets(ri, &matches)) { 1657c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_KEYSET_MATCH; 1658c9da1ac1SSteen Hegelund return -EINVAL; 1659c9da1ac1SSteen Hegelund } 1660abc4010dSSteen Hegelund } else { 16618e10490bSSteen Hegelund /* prepare for keyset validation */ 16628e10490bSSteen Hegelund keysets[0] = ri->data.keyset; 1663abc4010dSSteen Hegelund matches.cnt = 1; 1664abc4010dSSteen Hegelund } 1665abc4010dSSteen Hegelund 16668e10490bSSteen Hegelund /* Pick a keyset that is supported in the port lookups */ 1667abc4010dSSteen Hegelund ret = ri->vctrl->ops->validate_keyset(ri->ndev, ri->admin, rule, 1668abc4010dSSteen Hegelund &matches, l3_proto); 16698e10490bSSteen Hegelund if (ret < 0) { 16708e10490bSSteen Hegelund pr_err("%s:%d: keyset validation failed: %d\n", 16718e10490bSSteen Hegelund __func__, __LINE__, ret); 16728e10490bSSteen Hegelund ri->data.exterr = VCAP_ERR_NO_PORT_KEYSET_MATCH; 16738e10490bSSteen Hegelund return ret; 16748e10490bSSteen Hegelund } 1675abc4010dSSteen Hegelund /* use the keyset that is supported in the port lookups */ 1676abc4010dSSteen Hegelund ret = vcap_set_rule_set_keyset(rule, ret); 1677abc4010dSSteen Hegelund if (ret < 0) { 1678abc4010dSSteen Hegelund pr_err("%s:%d: keyset was not updated: %d\n", 1679abc4010dSSteen Hegelund __func__, __LINE__, ret); 1680abc4010dSSteen Hegelund return ret; 1681abc4010dSSteen Hegelund } 1682c9da1ac1SSteen Hegelund if (ri->data.actionset == VCAP_AFS_NO_VALUE) { 1683abc4010dSSteen Hegelund /* Later also actionsets will be matched against actions in 1684abc4010dSSteen Hegelund * the rule, and the type will be set accordingly 1685abc4010dSSteen Hegelund */ 1686c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_ACTIONSET_MATCH; 1687c9da1ac1SSteen Hegelund return -EINVAL; 1688c9da1ac1SSteen Hegelund } 16898e10490bSSteen Hegelund vcap_add_type_keyfield(rule); 16908e10490bSSteen Hegelund /* Add default fields to this rule */ 16918e10490bSSteen Hegelund ri->vctrl->ops->add_default_fields(ri->ndev, ri->admin, rule); 16928e10490bSSteen Hegelund 16938e10490bSSteen Hegelund /* Rule size is the maximum of the entry and action subword count */ 16948e10490bSSteen Hegelund ri->size = max(ri->keyset_sw, ri->actionset_sw); 16958e10490bSSteen Hegelund 16968e10490bSSteen Hegelund /* Finally check if there is room for the rule in the VCAP */ 16978e10490bSSteen Hegelund return vcap_rule_space(ri->admin, ri->size); 1698c9da1ac1SSteen Hegelund } 1699c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_val_rule); 1700c9da1ac1SSteen Hegelund 1701990e4839SSteen Hegelund /* Entries are sorted with increasing values of sort_key. 1702990e4839SSteen Hegelund * I.e. Lowest numerical sort_key is first in list. 1703990e4839SSteen Hegelund * In order to locate largest keys first in list we negate the key size with 1704990e4839SSteen Hegelund * (max_size - size). 1705990e4839SSteen Hegelund */ 1706990e4839SSteen Hegelund static u32 vcap_sort_key(u32 max_size, u32 size, u8 user, u16 prio) 1707990e4839SSteen Hegelund { 1708990e4839SSteen Hegelund return ((max_size - size) << 24) | (user << 16) | prio; 1709990e4839SSteen Hegelund } 1710990e4839SSteen Hegelund 17118e10490bSSteen Hegelund /* calculate the address of the next rule after this (lower address and prio) */ 17128e10490bSSteen Hegelund static u32 vcap_next_rule_addr(u32 addr, struct vcap_rule_internal *ri) 17138e10490bSSteen Hegelund { 17148e10490bSSteen Hegelund return ((addr - ri->size) / ri->size) * ri->size; 17158e10490bSSteen Hegelund } 17168e10490bSSteen Hegelund 1717c9da1ac1SSteen Hegelund /* Assign a unique rule id and autogenerate one if id == 0 */ 1718c9da1ac1SSteen Hegelund static u32 vcap_set_rule_id(struct vcap_rule_internal *ri) 1719c9da1ac1SSteen Hegelund { 1720c9da1ac1SSteen Hegelund if (ri->data.id != 0) 1721c9da1ac1SSteen Hegelund return ri->data.id; 1722c9da1ac1SSteen Hegelund 1723c1d8e3fbSHoratiu Vultur for (u32 next_id = 1; next_id < ~0; ++next_id) { 1724c9da1ac1SSteen Hegelund if (!vcap_lookup_rule(ri->vctrl, next_id)) { 1725c9da1ac1SSteen Hegelund ri->data.id = next_id; 1726c9da1ac1SSteen Hegelund break; 1727c9da1ac1SSteen Hegelund } 1728c9da1ac1SSteen Hegelund } 1729c9da1ac1SSteen Hegelund return ri->data.id; 1730c9da1ac1SSteen Hegelund } 1731c9da1ac1SSteen Hegelund 17328e10490bSSteen Hegelund static int vcap_insert_rule(struct vcap_rule_internal *ri, 17338e10490bSSteen Hegelund struct vcap_rule_move *move) 17348e10490bSSteen Hegelund { 1735990e4839SSteen Hegelund int sw_count = ri->vctrl->vcaps[ri->admin->vtype].sw_count; 1736990e4839SSteen Hegelund struct vcap_rule_internal *duprule, *iter, *elem = NULL; 17378e10490bSSteen Hegelund struct vcap_admin *admin = ri->admin; 1738990e4839SSteen Hegelund u32 addr; 17398e10490bSSteen Hegelund 1740990e4839SSteen Hegelund ri->sort_key = vcap_sort_key(sw_count, ri->size, ri->data.user, 1741990e4839SSteen Hegelund ri->data.priority); 1742990e4839SSteen Hegelund 1743990e4839SSteen Hegelund /* Insert the new rule in the list of rule based on the sort key 1744990e4839SSteen Hegelund * If the rule needs to be inserted between existing rules then move 1745990e4839SSteen Hegelund * these rules to make room for the new rule and update their start 1746990e4839SSteen Hegelund * address. 1747990e4839SSteen Hegelund */ 1748990e4839SSteen Hegelund list_for_each_entry(iter, &admin->rules, list) { 1749990e4839SSteen Hegelund if (ri->sort_key < iter->sort_key) { 1750990e4839SSteen Hegelund elem = iter; 1751990e4839SSteen Hegelund break; 1752990e4839SSteen Hegelund } 1753990e4839SSteen Hegelund } 1754990e4839SSteen Hegelund 1755990e4839SSteen Hegelund if (!elem) { 17568e10490bSSteen Hegelund ri->addr = vcap_next_rule_addr(admin->last_used_addr, ri); 17578e10490bSSteen Hegelund admin->last_used_addr = ri->addr; 1758990e4839SSteen Hegelund 17598e10490bSSteen Hegelund /* Add a shallow copy of the rule to the VCAP list */ 17608e10490bSSteen Hegelund duprule = vcap_dup_rule(ri); 17618e10490bSSteen Hegelund if (IS_ERR(duprule)) 17628e10490bSSteen Hegelund return PTR_ERR(duprule); 1763990e4839SSteen Hegelund 17648e10490bSSteen Hegelund list_add_tail(&duprule->list, &admin->rules); 17658e10490bSSteen Hegelund return 0; 17668e10490bSSteen Hegelund } 17678e10490bSSteen Hegelund 1768990e4839SSteen Hegelund /* Reuse the space of the current rule */ 1769990e4839SSteen Hegelund addr = elem->addr + elem->size; 1770990e4839SSteen Hegelund ri->addr = vcap_next_rule_addr(addr, ri); 1771990e4839SSteen Hegelund addr = ri->addr; 1772990e4839SSteen Hegelund 1773990e4839SSteen Hegelund /* Add a shallow copy of the rule to the VCAP list */ 1774990e4839SSteen Hegelund duprule = vcap_dup_rule(ri); 1775990e4839SSteen Hegelund if (IS_ERR(duprule)) 1776990e4839SSteen Hegelund return PTR_ERR(duprule); 1777990e4839SSteen Hegelund 1778990e4839SSteen Hegelund /* Add before the current entry */ 1779990e4839SSteen Hegelund list_add_tail(&duprule->list, &elem->list); 1780990e4839SSteen Hegelund 1781990e4839SSteen Hegelund /* Update the current rule */ 1782990e4839SSteen Hegelund elem->addr = vcap_next_rule_addr(addr, elem); 1783990e4839SSteen Hegelund addr = elem->addr; 1784990e4839SSteen Hegelund 1785990e4839SSteen Hegelund /* Update the address in the remaining rules in the list */ 1786990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) { 1787990e4839SSteen Hegelund elem->addr = vcap_next_rule_addr(addr, elem); 1788990e4839SSteen Hegelund addr = elem->addr; 1789990e4839SSteen Hegelund } 1790990e4839SSteen Hegelund 1791990e4839SSteen Hegelund /* Update the move info */ 1792990e4839SSteen Hegelund move->addr = admin->last_used_addr; 1793990e4839SSteen Hegelund move->count = ri->addr - addr; 1794990e4839SSteen Hegelund move->offset = admin->last_used_addr - addr; 1795990e4839SSteen Hegelund admin->last_used_addr = addr; 1796990e4839SSteen Hegelund return 0; 1797990e4839SSteen Hegelund } 1798990e4839SSteen Hegelund 17998e10490bSSteen Hegelund static void vcap_move_rules(struct vcap_rule_internal *ri, 18008e10490bSSteen Hegelund struct vcap_rule_move *move) 18018e10490bSSteen Hegelund { 18028e10490bSSteen Hegelund ri->vctrl->ops->move(ri->ndev, ri->admin, move->addr, 18038e10490bSSteen Hegelund move->offset, move->count); 18048e10490bSSteen Hegelund } 18058e10490bSSteen Hegelund 1806c9da1ac1SSteen Hegelund /* Encode and write a validated rule to the VCAP */ 1807c9da1ac1SSteen Hegelund int vcap_add_rule(struct vcap_rule *rule) 1808c9da1ac1SSteen Hegelund { 18098e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 18108e10490bSSteen Hegelund struct vcap_rule_move move = {0}; 1811*95fa7414SSteen Hegelund struct vcap_counter ctr = {0}; 18128e10490bSSteen Hegelund int ret; 18138e10490bSSteen Hegelund 18148e10490bSSteen Hegelund ret = vcap_api_check(ri->vctrl); 18158e10490bSSteen Hegelund if (ret) 18168e10490bSSteen Hegelund return ret; 18178e10490bSSteen Hegelund /* Insert the new rule in the list of vcap rules */ 181871c9de99SSteen Hegelund mutex_lock(&ri->admin->lock); 18198e10490bSSteen Hegelund ret = vcap_insert_rule(ri, &move); 18208e10490bSSteen Hegelund if (ret < 0) { 18218e10490bSSteen Hegelund pr_err("%s:%d: could not insert rule in vcap list: %d\n", 18228e10490bSSteen Hegelund __func__, __LINE__, ret); 18238e10490bSSteen Hegelund goto out; 18248e10490bSSteen Hegelund } 18258e10490bSSteen Hegelund if (move.count > 0) 18268e10490bSSteen Hegelund vcap_move_rules(ri, &move); 18276573f71aSSteen Hegelund vcap_erase_cache(ri); 18288e10490bSSteen Hegelund ret = vcap_encode_rule(ri); 18298e10490bSSteen Hegelund if (ret) { 18308e10490bSSteen Hegelund pr_err("%s:%d: rule encoding error: %d\n", __func__, __LINE__, ret); 18318e10490bSSteen Hegelund goto out; 18328e10490bSSteen Hegelund } 18338e10490bSSteen Hegelund 18348e10490bSSteen Hegelund ret = vcap_write_rule(ri); 1835*95fa7414SSteen Hegelund if (ret) { 18368e10490bSSteen Hegelund pr_err("%s:%d: rule write error: %d\n", __func__, __LINE__, ret); 1837*95fa7414SSteen Hegelund goto out; 1838*95fa7414SSteen Hegelund } 1839*95fa7414SSteen Hegelund /* Set the counter to zero */ 1840*95fa7414SSteen Hegelund ret = vcap_write_counter(ri, &ctr); 18418e10490bSSteen Hegelund out: 184271c9de99SSteen Hegelund mutex_unlock(&ri->admin->lock); 18438e10490bSSteen Hegelund return ret; 1844c9da1ac1SSteen Hegelund } 1845c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_add_rule); 1846c9da1ac1SSteen Hegelund 1847c9da1ac1SSteen Hegelund /* Allocate a new rule with the provided arguments */ 1848c9da1ac1SSteen Hegelund struct vcap_rule *vcap_alloc_rule(struct vcap_control *vctrl, 1849c9da1ac1SSteen Hegelund struct net_device *ndev, int vcap_chain_id, 1850c9da1ac1SSteen Hegelund enum vcap_user user, u16 priority, 1851c9da1ac1SSteen Hegelund u32 id) 1852c9da1ac1SSteen Hegelund { 1853c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri; 1854c9da1ac1SSteen Hegelund struct vcap_admin *admin; 1855990e4839SSteen Hegelund int err, maxsize; 1856c9da1ac1SSteen Hegelund 1857990e4839SSteen Hegelund err = vcap_api_check(vctrl); 1858990e4839SSteen Hegelund if (err) 1859990e4839SSteen Hegelund return ERR_PTR(err); 1860c9da1ac1SSteen Hegelund if (!ndev) 1861c9da1ac1SSteen Hegelund return ERR_PTR(-ENODEV); 1862c9da1ac1SSteen Hegelund /* Get the VCAP instance */ 1863c9da1ac1SSteen Hegelund admin = vcap_find_admin(vctrl, vcap_chain_id); 1864c9da1ac1SSteen Hegelund if (!admin) 1865c9da1ac1SSteen Hegelund return ERR_PTR(-ENOENT); 18668e10490bSSteen Hegelund /* Sanity check that this VCAP is supported on this platform */ 18678e10490bSSteen Hegelund if (vctrl->vcaps[admin->vtype].rows == 0) 18688e10490bSSteen Hegelund return ERR_PTR(-EINVAL); 18698e10490bSSteen Hegelund /* Check if a rule with this id already exists */ 18708e10490bSSteen Hegelund if (vcap_lookup_rule(vctrl, id)) 18718e10490bSSteen Hegelund return ERR_PTR(-EEXIST); 18728e10490bSSteen Hegelund /* Check if there is room for the rule in the block(s) of the VCAP */ 18738e10490bSSteen Hegelund maxsize = vctrl->vcaps[admin->vtype].sw_count; /* worst case rule size */ 18748e10490bSSteen Hegelund if (vcap_rule_space(admin, maxsize)) 18758e10490bSSteen Hegelund return ERR_PTR(-ENOSPC); 1876c9da1ac1SSteen Hegelund /* Create a container for the rule and return it */ 1877c9da1ac1SSteen Hegelund ri = kzalloc(sizeof(*ri), GFP_KERNEL); 1878c9da1ac1SSteen Hegelund if (!ri) 1879c9da1ac1SSteen Hegelund return ERR_PTR(-ENOMEM); 1880c9da1ac1SSteen Hegelund ri->data.vcap_chain_id = vcap_chain_id; 1881c9da1ac1SSteen Hegelund ri->data.user = user; 1882c9da1ac1SSteen Hegelund ri->data.priority = priority; 1883c9da1ac1SSteen Hegelund ri->data.id = id; 1884c9da1ac1SSteen Hegelund ri->data.keyset = VCAP_KFS_NO_VALUE; 1885c9da1ac1SSteen Hegelund ri->data.actionset = VCAP_AFS_NO_VALUE; 1886c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->list); 1887c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->data.keyfields); 1888c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->data.actionfields); 1889c9da1ac1SSteen Hegelund ri->ndev = ndev; 1890c9da1ac1SSteen Hegelund ri->admin = admin; /* refer to the vcap instance */ 1891c9da1ac1SSteen Hegelund ri->vctrl = vctrl; /* refer to the client */ 1892c9da1ac1SSteen Hegelund if (vcap_set_rule_id(ri) == 0) 1893c9da1ac1SSteen Hegelund goto out_free; 1894c9da1ac1SSteen Hegelund return (struct vcap_rule *)ri; 1895c9da1ac1SSteen Hegelund 1896c9da1ac1SSteen Hegelund out_free: 1897c9da1ac1SSteen Hegelund kfree(ri); 1898c9da1ac1SSteen Hegelund return ERR_PTR(-EINVAL); 1899c9da1ac1SSteen Hegelund } 1900c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_alloc_rule); 1901c9da1ac1SSteen Hegelund 1902c9da1ac1SSteen Hegelund /* Free mem of a rule owned by client after the rule as been added to the VCAP */ 1903c9da1ac1SSteen Hegelund void vcap_free_rule(struct vcap_rule *rule) 1904c9da1ac1SSteen Hegelund { 1905c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 1906c9da1ac1SSteen Hegelund struct vcap_client_actionfield *caf, *next_caf; 1907c9da1ac1SSteen Hegelund struct vcap_client_keyfield *ckf, *next_ckf; 1908c9da1ac1SSteen Hegelund 1909c9da1ac1SSteen Hegelund /* Deallocate the list of keys and actions */ 1910c9da1ac1SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, &ri->data.keyfields, ctrl.list) { 1911c9da1ac1SSteen Hegelund list_del(&ckf->ctrl.list); 1912c9da1ac1SSteen Hegelund kfree(ckf); 1913c9da1ac1SSteen Hegelund } 1914c9da1ac1SSteen Hegelund list_for_each_entry_safe(caf, next_caf, &ri->data.actionfields, ctrl.list) { 1915c9da1ac1SSteen Hegelund list_del(&caf->ctrl.list); 1916c9da1ac1SSteen Hegelund kfree(caf); 1917c9da1ac1SSteen Hegelund } 1918c9da1ac1SSteen Hegelund /* Deallocate the rule */ 1919c9da1ac1SSteen Hegelund kfree(rule); 1920c9da1ac1SSteen Hegelund } 1921c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_free_rule); 1922c9da1ac1SSteen Hegelund 1923610c32b2SHoratiu Vultur struct vcap_rule *vcap_get_rule(struct vcap_control *vctrl, u32 id) 1924610c32b2SHoratiu Vultur { 1925610c32b2SHoratiu Vultur struct vcap_rule_internal *elem; 1926610c32b2SHoratiu Vultur struct vcap_rule_internal *ri; 1927610c32b2SHoratiu Vultur int err; 1928610c32b2SHoratiu Vultur 1929610c32b2SHoratiu Vultur ri = NULL; 1930610c32b2SHoratiu Vultur 1931610c32b2SHoratiu Vultur err = vcap_api_check(vctrl); 1932610c32b2SHoratiu Vultur if (err) 1933610c32b2SHoratiu Vultur return ERR_PTR(err); 1934610c32b2SHoratiu Vultur elem = vcap_lookup_rule(vctrl, id); 1935610c32b2SHoratiu Vultur if (!elem) 1936610c32b2SHoratiu Vultur return NULL; 1937610c32b2SHoratiu Vultur mutex_lock(&elem->admin->lock); 1938610c32b2SHoratiu Vultur ri = vcap_dup_rule(elem); 1939610c32b2SHoratiu Vultur if (IS_ERR(ri)) 1940610c32b2SHoratiu Vultur goto unlock; 1941610c32b2SHoratiu Vultur err = vcap_read_rule(ri); 1942610c32b2SHoratiu Vultur if (err) { 1943610c32b2SHoratiu Vultur ri = ERR_PTR(err); 1944610c32b2SHoratiu Vultur goto unlock; 1945610c32b2SHoratiu Vultur } 1946610c32b2SHoratiu Vultur err = vcap_decode_keyset(ri); 1947610c32b2SHoratiu Vultur if (err) { 1948610c32b2SHoratiu Vultur ri = ERR_PTR(err); 1949610c32b2SHoratiu Vultur goto unlock; 1950610c32b2SHoratiu Vultur } 1951610c32b2SHoratiu Vultur err = vcap_decode_actionset(ri); 1952610c32b2SHoratiu Vultur if (err) { 1953610c32b2SHoratiu Vultur ri = ERR_PTR(err); 1954610c32b2SHoratiu Vultur goto unlock; 1955610c32b2SHoratiu Vultur } 1956610c32b2SHoratiu Vultur 1957610c32b2SHoratiu Vultur unlock: 1958610c32b2SHoratiu Vultur mutex_unlock(&elem->admin->lock); 1959610c32b2SHoratiu Vultur return (struct vcap_rule *)ri; 1960610c32b2SHoratiu Vultur } 1961610c32b2SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_get_rule); 1962610c32b2SHoratiu Vultur 19632662b3f9SHoratiu Vultur /* Update existing rule */ 19642662b3f9SHoratiu Vultur int vcap_mod_rule(struct vcap_rule *rule) 19652662b3f9SHoratiu Vultur { 19662662b3f9SHoratiu Vultur struct vcap_rule_internal *ri = to_intrule(rule); 19672662b3f9SHoratiu Vultur struct vcap_counter ctr; 19682662b3f9SHoratiu Vultur int err; 19692662b3f9SHoratiu Vultur 19702662b3f9SHoratiu Vultur err = vcap_api_check(ri->vctrl); 19712662b3f9SHoratiu Vultur if (err) 19722662b3f9SHoratiu Vultur return err; 19732662b3f9SHoratiu Vultur 19742662b3f9SHoratiu Vultur if (!vcap_lookup_rule(ri->vctrl, ri->data.id)) 19752662b3f9SHoratiu Vultur return -ENOENT; 19762662b3f9SHoratiu Vultur 19772662b3f9SHoratiu Vultur mutex_lock(&ri->admin->lock); 19782662b3f9SHoratiu Vultur /* Encode the bitstreams to the VCAP cache */ 19792662b3f9SHoratiu Vultur vcap_erase_cache(ri); 19802662b3f9SHoratiu Vultur err = vcap_encode_rule(ri); 19812662b3f9SHoratiu Vultur if (err) 19822662b3f9SHoratiu Vultur goto out; 19832662b3f9SHoratiu Vultur 19842662b3f9SHoratiu Vultur err = vcap_write_rule(ri); 19852662b3f9SHoratiu Vultur if (err) 19862662b3f9SHoratiu Vultur goto out; 19872662b3f9SHoratiu Vultur 19882662b3f9SHoratiu Vultur memset(&ctr, 0, sizeof(ctr)); 19892662b3f9SHoratiu Vultur err = vcap_write_counter(ri, &ctr); 19902662b3f9SHoratiu Vultur if (err) 19912662b3f9SHoratiu Vultur goto out; 19922662b3f9SHoratiu Vultur 19932662b3f9SHoratiu Vultur out: 19942662b3f9SHoratiu Vultur mutex_unlock(&ri->admin->lock); 19952662b3f9SHoratiu Vultur return err; 19962662b3f9SHoratiu Vultur } 19972662b3f9SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_mod_rule); 19982662b3f9SHoratiu Vultur 1999990e4839SSteen Hegelund /* Return the alignment offset for a new rule address */ 2000990e4839SSteen Hegelund static int vcap_valid_rule_move(struct vcap_rule_internal *el, int offset) 2001990e4839SSteen Hegelund { 2002990e4839SSteen Hegelund return (el->addr + offset) % el->size; 2003990e4839SSteen Hegelund } 2004990e4839SSteen Hegelund 2005990e4839SSteen Hegelund /* Update the rule address with an offset */ 2006990e4839SSteen Hegelund static void vcap_adjust_rule_addr(struct vcap_rule_internal *el, int offset) 2007990e4839SSteen Hegelund { 2008990e4839SSteen Hegelund el->addr += offset; 2009990e4839SSteen Hegelund } 2010990e4839SSteen Hegelund 2011990e4839SSteen Hegelund /* Rules needs to be moved to fill the gap of the deleted rule */ 2012990e4839SSteen Hegelund static int vcap_fill_rule_gap(struct vcap_rule_internal *ri) 2013990e4839SSteen Hegelund { 2014990e4839SSteen Hegelund struct vcap_admin *admin = ri->admin; 2015990e4839SSteen Hegelund struct vcap_rule_internal *elem; 2016990e4839SSteen Hegelund struct vcap_rule_move move; 2017990e4839SSteen Hegelund int gap = 0, offset = 0; 2018990e4839SSteen Hegelund 2019990e4839SSteen Hegelund /* If the first rule is deleted: Move other rules to the top */ 2020990e4839SSteen Hegelund if (list_is_first(&ri->list, &admin->rules)) 2021990e4839SSteen Hegelund offset = admin->last_valid_addr + 1 - ri->addr - ri->size; 2022990e4839SSteen Hegelund 2023990e4839SSteen Hegelund /* Locate gaps between odd size rules and adjust the move */ 2024990e4839SSteen Hegelund elem = ri; 2025990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) 2026990e4839SSteen Hegelund gap += vcap_valid_rule_move(elem, ri->size); 2027990e4839SSteen Hegelund 2028990e4839SSteen Hegelund /* Update the address in the remaining rules in the list */ 2029990e4839SSteen Hegelund elem = ri; 2030990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) 2031990e4839SSteen Hegelund vcap_adjust_rule_addr(elem, ri->size + gap + offset); 2032990e4839SSteen Hegelund 2033990e4839SSteen Hegelund /* Update the move info */ 2034990e4839SSteen Hegelund move.addr = admin->last_used_addr; 2035990e4839SSteen Hegelund move.count = ri->addr - admin->last_used_addr - gap; 2036990e4839SSteen Hegelund move.offset = -(ri->size + gap + offset); 2037990e4839SSteen Hegelund 2038990e4839SSteen Hegelund /* Do the actual move operation */ 2039990e4839SSteen Hegelund vcap_move_rules(ri, &move); 2040990e4839SSteen Hegelund 2041990e4839SSteen Hegelund return gap + offset; 2042990e4839SSteen Hegelund } 2043990e4839SSteen Hegelund 2044c9da1ac1SSteen Hegelund /* Delete rule in a VCAP instance */ 2045c9da1ac1SSteen Hegelund int vcap_del_rule(struct vcap_control *vctrl, struct net_device *ndev, u32 id) 2046c9da1ac1SSteen Hegelund { 2047c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri, *elem; 2048c9da1ac1SSteen Hegelund struct vcap_admin *admin; 2049990e4839SSteen Hegelund int gap = 0, err; 2050c9da1ac1SSteen Hegelund 2051c9da1ac1SSteen Hegelund /* This will later also handle rule moving */ 2052c9da1ac1SSteen Hegelund if (!ndev) 2053c9da1ac1SSteen Hegelund return -ENODEV; 20548e10490bSSteen Hegelund err = vcap_api_check(vctrl); 20558e10490bSSteen Hegelund if (err) 20568e10490bSSteen Hegelund return err; 2057c9da1ac1SSteen Hegelund /* Look for the rule id in all vcaps */ 2058c9da1ac1SSteen Hegelund ri = vcap_lookup_rule(vctrl, id); 2059c9da1ac1SSteen Hegelund if (!ri) 2060c9da1ac1SSteen Hegelund return -EINVAL; 2061c9da1ac1SSteen Hegelund admin = ri->admin; 20628e10490bSSteen Hegelund 2063990e4839SSteen Hegelund if (ri->addr > admin->last_used_addr) 2064990e4839SSteen Hegelund gap = vcap_fill_rule_gap(ri); 2065990e4839SSteen Hegelund 2066990e4839SSteen Hegelund /* Delete the rule from the list of rules and the cache */ 206771c9de99SSteen Hegelund mutex_lock(&admin->lock); 2068990e4839SSteen Hegelund list_del(&ri->list); 2069990e4839SSteen Hegelund vctrl->ops->init(ndev, admin, admin->last_used_addr, ri->size + gap); 2070990e4839SSteen Hegelund kfree(ri); 207171c9de99SSteen Hegelund mutex_unlock(&admin->lock); 2072990e4839SSteen Hegelund 2073277e9179SSteen Hegelund /* Update the last used address, set to default when no rules */ 2074c9da1ac1SSteen Hegelund if (list_empty(&admin->rules)) { 2075277e9179SSteen Hegelund admin->last_used_addr = admin->last_valid_addr + 1; 2076c9da1ac1SSteen Hegelund } else { 2077990e4839SSteen Hegelund elem = list_last_entry(&admin->rules, struct vcap_rule_internal, 2078990e4839SSteen Hegelund list); 2079c9da1ac1SSteen Hegelund admin->last_used_addr = elem->addr; 2080c9da1ac1SSteen Hegelund } 2081c9da1ac1SSteen Hegelund return 0; 2082c9da1ac1SSteen Hegelund } 2083c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_del_rule); 2084c9da1ac1SSteen Hegelund 20858e10490bSSteen Hegelund /* Delete all rules in the VCAP instance */ 20868e10490bSSteen Hegelund int vcap_del_rules(struct vcap_control *vctrl, struct vcap_admin *admin) 20878e10490bSSteen Hegelund { 208867456717SSteen Hegelund struct vcap_enabled_port *eport, *next_eport; 20898e10490bSSteen Hegelund struct vcap_rule_internal *ri, *next_ri; 20908e10490bSSteen Hegelund int ret = vcap_api_check(vctrl); 20918e10490bSSteen Hegelund 20928e10490bSSteen Hegelund if (ret) 20938e10490bSSteen Hegelund return ret; 209471c9de99SSteen Hegelund 209571c9de99SSteen Hegelund mutex_lock(&admin->lock); 20968e10490bSSteen Hegelund list_for_each_entry_safe(ri, next_ri, &admin->rules, list) { 20978e10490bSSteen Hegelund vctrl->ops->init(ri->ndev, admin, ri->addr, ri->size); 20988e10490bSSteen Hegelund list_del(&ri->list); 20998e10490bSSteen Hegelund kfree(ri); 21008e10490bSSteen Hegelund } 21018e10490bSSteen Hegelund admin->last_used_addr = admin->last_valid_addr; 210267456717SSteen Hegelund 210367456717SSteen Hegelund /* Remove list of enabled ports */ 210467456717SSteen Hegelund list_for_each_entry_safe(eport, next_eport, &admin->enabled, list) { 210567456717SSteen Hegelund list_del(&eport->list); 210667456717SSteen Hegelund kfree(eport); 210767456717SSteen Hegelund } 210871c9de99SSteen Hegelund mutex_unlock(&admin->lock); 210967456717SSteen Hegelund 21108e10490bSSteen Hegelund return 0; 21118e10490bSSteen Hegelund } 21128e10490bSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_del_rules); 21138e10490bSSteen Hegelund 2114465a38a2SSteen Hegelund /* Find a client key field in a rule */ 2115465a38a2SSteen Hegelund static struct vcap_client_keyfield * 2116465a38a2SSteen Hegelund vcap_find_keyfield(struct vcap_rule *rule, enum vcap_key_field key) 2117465a38a2SSteen Hegelund { 2118465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2119465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf; 2120465a38a2SSteen Hegelund 2121465a38a2SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 2122465a38a2SSteen Hegelund if (ckf->ctrl.key == key) 2123465a38a2SSteen Hegelund return ckf; 2124465a38a2SSteen Hegelund return NULL; 2125465a38a2SSteen Hegelund } 2126465a38a2SSteen Hegelund 212746be056eSSteen Hegelund /* Find information on a key field in a rule */ 212846be056eSSteen Hegelund const struct vcap_field *vcap_lookup_keyfield(struct vcap_rule *rule, 212946be056eSSteen Hegelund enum vcap_key_field key) 213046be056eSSteen Hegelund { 21318e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 213246be056eSSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 213346be056eSSteen Hegelund enum vcap_type vt = ri->admin->vtype; 213446be056eSSteen Hegelund const struct vcap_field *fields; 213546be056eSSteen Hegelund 213646be056eSSteen Hegelund if (keyset == VCAP_KFS_NO_VALUE) 213746be056eSSteen Hegelund return NULL; 213846be056eSSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 213946be056eSSteen Hegelund if (!fields) 214046be056eSSteen Hegelund return NULL; 214146be056eSSteen Hegelund return &fields[key]; 214246be056eSSteen Hegelund } 214346be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_lookup_keyfield); 214446be056eSSteen Hegelund 21454f141e36SHoratiu Vultur /* Copy data from src to dst but reverse the data in chunks of 32bits. 21464f141e36SHoratiu Vultur * For example if src is 00:11:22:33:44:55 where 55 is LSB the dst will 21474f141e36SHoratiu Vultur * have the value 22:33:44:55:00:11. 21484f141e36SHoratiu Vultur */ 21494f141e36SHoratiu Vultur static void vcap_copy_to_w32be(u8 *dst, u8 *src, int size) 21504f141e36SHoratiu Vultur { 21514f141e36SHoratiu Vultur for (int idx = 0; idx < size; ++idx) { 21524f141e36SHoratiu Vultur int first_byte_index = 0; 21534f141e36SHoratiu Vultur int nidx; 21544f141e36SHoratiu Vultur 21554f141e36SHoratiu Vultur first_byte_index = size - (((idx >> 2) + 1) << 2); 21564f141e36SHoratiu Vultur if (first_byte_index < 0) 21574f141e36SHoratiu Vultur first_byte_index = 0; 21584f141e36SHoratiu Vultur nidx = idx + first_byte_index - (idx & ~0x3); 21594f141e36SHoratiu Vultur dst[nidx] = src[idx]; 21604f141e36SHoratiu Vultur } 21614f141e36SHoratiu Vultur } 21624f141e36SHoratiu Vultur 2163c9da1ac1SSteen Hegelund static void vcap_copy_from_client_keyfield(struct vcap_rule *rule, 2164c9da1ac1SSteen Hegelund struct vcap_client_keyfield *field, 2165c9da1ac1SSteen Hegelund struct vcap_client_keyfield_data *data) 2166c9da1ac1SSteen Hegelund { 21674f141e36SHoratiu Vultur struct vcap_rule_internal *ri = to_intrule(rule); 21684f141e36SHoratiu Vultur int size; 21694f141e36SHoratiu Vultur 21704f141e36SHoratiu Vultur if (!ri->admin->w32be) { 2171c9da1ac1SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 21724f141e36SHoratiu Vultur return; 21734f141e36SHoratiu Vultur } 21744f141e36SHoratiu Vultur 21754f141e36SHoratiu Vultur size = keyfield_size_table[field->ctrl.type] / 2; 21764f141e36SHoratiu Vultur switch (field->ctrl.type) { 21774f141e36SHoratiu Vultur case VCAP_FIELD_BIT: 21784f141e36SHoratiu Vultur case VCAP_FIELD_U32: 21794f141e36SHoratiu Vultur memcpy(&field->data, data, sizeof(field->data)); 21804f141e36SHoratiu Vultur break; 21814f141e36SHoratiu Vultur case VCAP_FIELD_U48: 21824f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u48.value, data->u48.value, size); 21834f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u48.mask, data->u48.mask, size); 21844f141e36SHoratiu Vultur break; 21854f141e36SHoratiu Vultur case VCAP_FIELD_U56: 21864f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u56.value, data->u56.value, size); 21874f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u56.mask, data->u56.mask, size); 21884f141e36SHoratiu Vultur break; 21894f141e36SHoratiu Vultur case VCAP_FIELD_U64: 21904f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u64.value, data->u64.value, size); 21914f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u64.mask, data->u64.mask, size); 21924f141e36SHoratiu Vultur break; 21934f141e36SHoratiu Vultur case VCAP_FIELD_U72: 21944f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u72.value, data->u72.value, size); 21954f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u72.mask, data->u72.mask, size); 21964f141e36SHoratiu Vultur break; 21974f141e36SHoratiu Vultur case VCAP_FIELD_U112: 21984f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u112.value, data->u112.value, size); 21994f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u112.mask, data->u112.mask, size); 22004f141e36SHoratiu Vultur break; 22014f141e36SHoratiu Vultur case VCAP_FIELD_U128: 22024f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u128.value, data->u128.value, size); 22034f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u128.mask, data->u128.mask, size); 22044f141e36SHoratiu Vultur break; 2205e3bd74c3Szhang songyi } 2206c9da1ac1SSteen Hegelund } 2207c9da1ac1SSteen Hegelund 2208242df4f7SSteen Hegelund /* Check if the keyfield is already in the rule */ 2209242df4f7SSteen Hegelund static bool vcap_keyfield_unique(struct vcap_rule *rule, 2210242df4f7SSteen Hegelund enum vcap_key_field key) 2211242df4f7SSteen Hegelund { 2212242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2213242df4f7SSteen Hegelund const struct vcap_client_keyfield *ckf; 2214242df4f7SSteen Hegelund 2215242df4f7SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 2216242df4f7SSteen Hegelund if (ckf->ctrl.key == key) 2217242df4f7SSteen Hegelund return false; 2218242df4f7SSteen Hegelund return true; 2219242df4f7SSteen Hegelund } 2220242df4f7SSteen Hegelund 2221242df4f7SSteen Hegelund /* Check if the keyfield is in the keyset */ 2222242df4f7SSteen Hegelund static bool vcap_keyfield_match_keyset(struct vcap_rule *rule, 2223242df4f7SSteen Hegelund enum vcap_key_field key) 2224242df4f7SSteen Hegelund { 2225242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2226242df4f7SSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 2227242df4f7SSteen Hegelund enum vcap_type vt = ri->admin->vtype; 2228242df4f7SSteen Hegelund const struct vcap_field *fields; 2229242df4f7SSteen Hegelund 2230242df4f7SSteen Hegelund /* the field is accepted if the rule has no keyset yet */ 2231242df4f7SSteen Hegelund if (keyset == VCAP_KFS_NO_VALUE) 2232242df4f7SSteen Hegelund return true; 2233242df4f7SSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 2234242df4f7SSteen Hegelund if (!fields) 2235242df4f7SSteen Hegelund return false; 2236242df4f7SSteen Hegelund /* if there is a width there is a way */ 2237242df4f7SSteen Hegelund return fields[key].width > 0; 2238242df4f7SSteen Hegelund } 2239242df4f7SSteen Hegelund 2240c9da1ac1SSteen Hegelund static int vcap_rule_add_key(struct vcap_rule *rule, 2241c9da1ac1SSteen Hegelund enum vcap_key_field key, 2242c9da1ac1SSteen Hegelund enum vcap_field_type ftype, 2243c9da1ac1SSteen Hegelund struct vcap_client_keyfield_data *data) 2244c9da1ac1SSteen Hegelund { 2245242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2246c9da1ac1SSteen Hegelund struct vcap_client_keyfield *field; 2247c9da1ac1SSteen Hegelund 2248242df4f7SSteen Hegelund if (!vcap_keyfield_unique(rule, key)) { 2249242df4f7SSteen Hegelund pr_warn("%s:%d: keyfield %s is already in the rule\n", 2250242df4f7SSteen Hegelund __func__, __LINE__, 2251242df4f7SSteen Hegelund vcap_keyfield_name(ri->vctrl, key)); 2252242df4f7SSteen Hegelund return -EINVAL; 2253242df4f7SSteen Hegelund } 2254242df4f7SSteen Hegelund 2255242df4f7SSteen Hegelund if (!vcap_keyfield_match_keyset(rule, key)) { 2256242df4f7SSteen Hegelund pr_err("%s:%d: keyfield %s does not belong in the rule keyset\n", 2257242df4f7SSteen Hegelund __func__, __LINE__, 2258242df4f7SSteen Hegelund vcap_keyfield_name(ri->vctrl, key)); 2259242df4f7SSteen Hegelund return -EINVAL; 2260242df4f7SSteen Hegelund } 2261242df4f7SSteen Hegelund 2262c9da1ac1SSteen Hegelund field = kzalloc(sizeof(*field), GFP_KERNEL); 2263c9da1ac1SSteen Hegelund if (!field) 2264c9da1ac1SSteen Hegelund return -ENOMEM; 2265c9da1ac1SSteen Hegelund field->ctrl.key = key; 2266c9da1ac1SSteen Hegelund field->ctrl.type = ftype; 2267c9da1ac1SSteen Hegelund vcap_copy_from_client_keyfield(rule, field, data); 2268c9da1ac1SSteen Hegelund list_add_tail(&field->ctrl.list, &rule->keyfields); 2269c9da1ac1SSteen Hegelund return 0; 2270c9da1ac1SSteen Hegelund } 2271c9da1ac1SSteen Hegelund 227246be056eSSteen Hegelund static void vcap_rule_set_key_bitsize(struct vcap_u1_key *u1, enum vcap_bit val) 227346be056eSSteen Hegelund { 227446be056eSSteen Hegelund switch (val) { 227546be056eSSteen Hegelund case VCAP_BIT_0: 227646be056eSSteen Hegelund u1->value = 0; 227746be056eSSteen Hegelund u1->mask = 1; 227846be056eSSteen Hegelund break; 227946be056eSSteen Hegelund case VCAP_BIT_1: 228046be056eSSteen Hegelund u1->value = 1; 228146be056eSSteen Hegelund u1->mask = 1; 228246be056eSSteen Hegelund break; 228346be056eSSteen Hegelund case VCAP_BIT_ANY: 228446be056eSSteen Hegelund u1->value = 0; 228546be056eSSteen Hegelund u1->mask = 0; 228646be056eSSteen Hegelund break; 228746be056eSSteen Hegelund } 228846be056eSSteen Hegelund } 228946be056eSSteen Hegelund 229046be056eSSteen Hegelund /* Add a bit key with value and mask to the rule */ 229146be056eSSteen Hegelund int vcap_rule_add_key_bit(struct vcap_rule *rule, enum vcap_key_field key, 229246be056eSSteen Hegelund enum vcap_bit val) 229346be056eSSteen Hegelund { 229446be056eSSteen Hegelund struct vcap_client_keyfield_data data; 229546be056eSSteen Hegelund 229646be056eSSteen Hegelund vcap_rule_set_key_bitsize(&data.u1, val); 229746be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_BIT, &data); 229846be056eSSteen Hegelund } 229946be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_bit); 230046be056eSSteen Hegelund 230146be056eSSteen Hegelund /* Add a 32 bit key field with value and mask to the rule */ 230246be056eSSteen Hegelund int vcap_rule_add_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 230346be056eSSteen Hegelund u32 value, u32 mask) 230446be056eSSteen Hegelund { 230546be056eSSteen Hegelund struct vcap_client_keyfield_data data; 230646be056eSSteen Hegelund 230746be056eSSteen Hegelund data.u32.value = value; 230846be056eSSteen Hegelund data.u32.mask = mask; 230946be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U32, &data); 231046be056eSSteen Hegelund } 231146be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u32); 231246be056eSSteen Hegelund 2313c9da1ac1SSteen Hegelund /* Add a 48 bit key with value and mask to the rule */ 2314c9da1ac1SSteen Hegelund int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key, 2315c9da1ac1SSteen Hegelund struct vcap_u48_key *fieldval) 2316c9da1ac1SSteen Hegelund { 2317c9da1ac1SSteen Hegelund struct vcap_client_keyfield_data data; 2318c9da1ac1SSteen Hegelund 2319c9da1ac1SSteen Hegelund memcpy(&data.u48, fieldval, sizeof(data.u48)); 2320c9da1ac1SSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U48, &data); 2321c9da1ac1SSteen Hegelund } 2322c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u48); 2323c9da1ac1SSteen Hegelund 232446be056eSSteen Hegelund /* Add a 72 bit key with value and mask to the rule */ 232546be056eSSteen Hegelund int vcap_rule_add_key_u72(struct vcap_rule *rule, enum vcap_key_field key, 232646be056eSSteen Hegelund struct vcap_u72_key *fieldval) 232746be056eSSteen Hegelund { 232846be056eSSteen Hegelund struct vcap_client_keyfield_data data; 232946be056eSSteen Hegelund 233046be056eSSteen Hegelund memcpy(&data.u72, fieldval, sizeof(data.u72)); 233146be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U72, &data); 233246be056eSSteen Hegelund } 233346be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u72); 233446be056eSSteen Hegelund 2335d6c2964dSSteen Hegelund /* Add a 128 bit key with value and mask to the rule */ 2336d6c2964dSSteen Hegelund int vcap_rule_add_key_u128(struct vcap_rule *rule, enum vcap_key_field key, 2337d6c2964dSSteen Hegelund struct vcap_u128_key *fieldval) 2338d6c2964dSSteen Hegelund { 2339d6c2964dSSteen Hegelund struct vcap_client_keyfield_data data; 2340d6c2964dSSteen Hegelund 2341d6c2964dSSteen Hegelund memcpy(&data.u128, fieldval, sizeof(data.u128)); 2342d6c2964dSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U128, &data); 2343d6c2964dSSteen Hegelund } 2344d6c2964dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u128); 2345d6c2964dSSteen Hegelund 23466009b61fSHoratiu Vultur int vcap_rule_get_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 23476009b61fSHoratiu Vultur u32 *value, u32 *mask) 23486009b61fSHoratiu Vultur { 23496009b61fSHoratiu Vultur struct vcap_client_keyfield *ckf; 23506009b61fSHoratiu Vultur 23516009b61fSHoratiu Vultur ckf = vcap_find_keyfield(rule, key); 23526009b61fSHoratiu Vultur if (!ckf) 23536009b61fSHoratiu Vultur return -ENOENT; 23546009b61fSHoratiu Vultur 23556009b61fSHoratiu Vultur *value = ckf->data.u32.value; 23566009b61fSHoratiu Vultur *mask = ckf->data.u32.mask; 23576009b61fSHoratiu Vultur 23586009b61fSHoratiu Vultur return 0; 23596009b61fSHoratiu Vultur } 23606009b61fSHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_rule_get_key_u32); 23616009b61fSHoratiu Vultur 2362465a38a2SSteen Hegelund /* Find a client action field in a rule */ 2363465a38a2SSteen Hegelund static struct vcap_client_actionfield * 2364465a38a2SSteen Hegelund vcap_find_actionfield(struct vcap_rule *rule, enum vcap_action_field act) 2365465a38a2SSteen Hegelund { 2366465a38a2SSteen Hegelund struct vcap_rule_internal *ri = (struct vcap_rule_internal *)rule; 2367465a38a2SSteen Hegelund struct vcap_client_actionfield *caf; 2368465a38a2SSteen Hegelund 2369465a38a2SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) 2370465a38a2SSteen Hegelund if (caf->ctrl.action == act) 2371465a38a2SSteen Hegelund return caf; 2372465a38a2SSteen Hegelund return NULL; 2373465a38a2SSteen Hegelund } 2374465a38a2SSteen Hegelund 2375c9da1ac1SSteen Hegelund static void vcap_copy_from_client_actionfield(struct vcap_rule *rule, 2376c9da1ac1SSteen Hegelund struct vcap_client_actionfield *field, 2377c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data *data) 2378c9da1ac1SSteen Hegelund { 23794f141e36SHoratiu Vultur struct vcap_rule_internal *ri = to_intrule(rule); 23804f141e36SHoratiu Vultur int size; 23814f141e36SHoratiu Vultur 23824f141e36SHoratiu Vultur if (!ri->admin->w32be) { 2383c9da1ac1SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 23844f141e36SHoratiu Vultur return; 23854f141e36SHoratiu Vultur } 23864f141e36SHoratiu Vultur 23874f141e36SHoratiu Vultur size = actionfield_size_table[field->ctrl.type]; 23884f141e36SHoratiu Vultur switch (field->ctrl.type) { 23894f141e36SHoratiu Vultur case VCAP_FIELD_BIT: 23904f141e36SHoratiu Vultur case VCAP_FIELD_U32: 23914f141e36SHoratiu Vultur memcpy(&field->data, data, sizeof(field->data)); 23924f141e36SHoratiu Vultur break; 23934f141e36SHoratiu Vultur case VCAP_FIELD_U48: 23944f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u48.value, data->u48.value, size); 23954f141e36SHoratiu Vultur break; 23964f141e36SHoratiu Vultur case VCAP_FIELD_U56: 23974f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u56.value, data->u56.value, size); 23984f141e36SHoratiu Vultur break; 23994f141e36SHoratiu Vultur case VCAP_FIELD_U64: 24004f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u64.value, data->u64.value, size); 24014f141e36SHoratiu Vultur break; 24024f141e36SHoratiu Vultur case VCAP_FIELD_U72: 24034f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u72.value, data->u72.value, size); 24044f141e36SHoratiu Vultur break; 24054f141e36SHoratiu Vultur case VCAP_FIELD_U112: 24064f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u112.value, data->u112.value, size); 24074f141e36SHoratiu Vultur break; 24084f141e36SHoratiu Vultur case VCAP_FIELD_U128: 24094f141e36SHoratiu Vultur vcap_copy_to_w32be(field->data.u128.value, data->u128.value, size); 24104f141e36SHoratiu Vultur break; 2411e3bd74c3Szhang songyi } 2412c9da1ac1SSteen Hegelund } 2413c9da1ac1SSteen Hegelund 2414242df4f7SSteen Hegelund /* Check if the actionfield is already in the rule */ 2415242df4f7SSteen Hegelund static bool vcap_actionfield_unique(struct vcap_rule *rule, 2416242df4f7SSteen Hegelund enum vcap_action_field act) 2417242df4f7SSteen Hegelund { 2418242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2419242df4f7SSteen Hegelund const struct vcap_client_actionfield *caf; 2420242df4f7SSteen Hegelund 2421242df4f7SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) 2422242df4f7SSteen Hegelund if (caf->ctrl.action == act) 2423242df4f7SSteen Hegelund return false; 2424242df4f7SSteen Hegelund return true; 2425242df4f7SSteen Hegelund } 2426242df4f7SSteen Hegelund 2427242df4f7SSteen Hegelund /* Check if the actionfield is in the actionset */ 2428242df4f7SSteen Hegelund static bool vcap_actionfield_match_actionset(struct vcap_rule *rule, 2429242df4f7SSteen Hegelund enum vcap_action_field action) 2430242df4f7SSteen Hegelund { 2431242df4f7SSteen Hegelund enum vcap_actionfield_set actionset = rule->actionset; 2432242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2433242df4f7SSteen Hegelund enum vcap_type vt = ri->admin->vtype; 2434242df4f7SSteen Hegelund const struct vcap_field *fields; 2435242df4f7SSteen Hegelund 2436242df4f7SSteen Hegelund /* the field is accepted if the rule has no actionset yet */ 2437242df4f7SSteen Hegelund if (actionset == VCAP_AFS_NO_VALUE) 2438242df4f7SSteen Hegelund return true; 2439242df4f7SSteen Hegelund fields = vcap_actionfields(ri->vctrl, vt, actionset); 2440242df4f7SSteen Hegelund if (!fields) 2441242df4f7SSteen Hegelund return false; 2442242df4f7SSteen Hegelund /* if there is a width there is a way */ 2443242df4f7SSteen Hegelund return fields[action].width > 0; 2444242df4f7SSteen Hegelund } 2445242df4f7SSteen Hegelund 2446c9da1ac1SSteen Hegelund static int vcap_rule_add_action(struct vcap_rule *rule, 2447c9da1ac1SSteen Hegelund enum vcap_action_field action, 2448c9da1ac1SSteen Hegelund enum vcap_field_type ftype, 2449c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data *data) 2450c9da1ac1SSteen Hegelund { 2451242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2452c9da1ac1SSteen Hegelund struct vcap_client_actionfield *field; 2453c9da1ac1SSteen Hegelund 2454242df4f7SSteen Hegelund if (!vcap_actionfield_unique(rule, action)) { 2455242df4f7SSteen Hegelund pr_warn("%s:%d: actionfield %s is already in the rule\n", 2456242df4f7SSteen Hegelund __func__, __LINE__, 2457242df4f7SSteen Hegelund vcap_actionfield_name(ri->vctrl, action)); 2458242df4f7SSteen Hegelund return -EINVAL; 2459242df4f7SSteen Hegelund } 2460242df4f7SSteen Hegelund 2461242df4f7SSteen Hegelund if (!vcap_actionfield_match_actionset(rule, action)) { 2462242df4f7SSteen Hegelund pr_err("%s:%d: actionfield %s does not belong in the rule actionset\n", 2463242df4f7SSteen Hegelund __func__, __LINE__, 2464242df4f7SSteen Hegelund vcap_actionfield_name(ri->vctrl, action)); 2465242df4f7SSteen Hegelund return -EINVAL; 2466242df4f7SSteen Hegelund } 2467242df4f7SSteen Hegelund 2468c9da1ac1SSteen Hegelund field = kzalloc(sizeof(*field), GFP_KERNEL); 2469c9da1ac1SSteen Hegelund if (!field) 2470c9da1ac1SSteen Hegelund return -ENOMEM; 2471c9da1ac1SSteen Hegelund field->ctrl.action = action; 2472c9da1ac1SSteen Hegelund field->ctrl.type = ftype; 2473c9da1ac1SSteen Hegelund vcap_copy_from_client_actionfield(rule, field, data); 2474c9da1ac1SSteen Hegelund list_add_tail(&field->ctrl.list, &rule->actionfields); 2475c9da1ac1SSteen Hegelund return 0; 2476c9da1ac1SSteen Hegelund } 2477c9da1ac1SSteen Hegelund 2478c9da1ac1SSteen Hegelund static void vcap_rule_set_action_bitsize(struct vcap_u1_action *u1, 2479c9da1ac1SSteen Hegelund enum vcap_bit val) 2480c9da1ac1SSteen Hegelund { 2481c9da1ac1SSteen Hegelund switch (val) { 2482c9da1ac1SSteen Hegelund case VCAP_BIT_0: 2483c9da1ac1SSteen Hegelund u1->value = 0; 2484c9da1ac1SSteen Hegelund break; 2485c9da1ac1SSteen Hegelund case VCAP_BIT_1: 2486c9da1ac1SSteen Hegelund u1->value = 1; 2487c9da1ac1SSteen Hegelund break; 2488c9da1ac1SSteen Hegelund case VCAP_BIT_ANY: 2489c9da1ac1SSteen Hegelund u1->value = 0; 2490c9da1ac1SSteen Hegelund break; 2491c9da1ac1SSteen Hegelund } 2492c9da1ac1SSteen Hegelund } 2493c9da1ac1SSteen Hegelund 2494c9da1ac1SSteen Hegelund /* Add a bit action with value to the rule */ 2495c9da1ac1SSteen Hegelund int vcap_rule_add_action_bit(struct vcap_rule *rule, 2496c9da1ac1SSteen Hegelund enum vcap_action_field action, 2497c9da1ac1SSteen Hegelund enum vcap_bit val) 2498c9da1ac1SSteen Hegelund { 2499c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data data; 2500c9da1ac1SSteen Hegelund 2501c9da1ac1SSteen Hegelund vcap_rule_set_action_bitsize(&data.u1, val); 2502c9da1ac1SSteen Hegelund return vcap_rule_add_action(rule, action, VCAP_FIELD_BIT, &data); 2503c9da1ac1SSteen Hegelund } 2504c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_action_bit); 2505c9da1ac1SSteen Hegelund 2506c9da1ac1SSteen Hegelund /* Add a 32 bit action field with value to the rule */ 2507c9da1ac1SSteen Hegelund int vcap_rule_add_action_u32(struct vcap_rule *rule, 2508c9da1ac1SSteen Hegelund enum vcap_action_field action, 2509c9da1ac1SSteen Hegelund u32 value) 2510c9da1ac1SSteen Hegelund { 2511c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data data; 2512c9da1ac1SSteen Hegelund 2513c9da1ac1SSteen Hegelund data.u32.value = value; 2514c9da1ac1SSteen Hegelund return vcap_rule_add_action(rule, action, VCAP_FIELD_U32, &data); 2515c9da1ac1SSteen Hegelund } 2516c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_action_u32); 2517c9da1ac1SSteen Hegelund 2518f13230a4SSteen Hegelund static int vcap_read_counter(struct vcap_rule_internal *ri, 2519f13230a4SSteen Hegelund struct vcap_counter *ctr) 2520f13230a4SSteen Hegelund { 2521f13230a4SSteen Hegelund struct vcap_admin *admin = ri->admin; 2522f13230a4SSteen Hegelund 2523f13230a4SSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_READ, VCAP_SEL_COUNTER, 2524f13230a4SSteen Hegelund ri->addr); 2525f13230a4SSteen Hegelund ri->vctrl->ops->cache_read(ri->ndev, admin, VCAP_SEL_COUNTER, 2526f13230a4SSteen Hegelund ri->counter_id, 0); 2527f13230a4SSteen Hegelund ctr->value = admin->cache.counter; 2528f13230a4SSteen Hegelund ctr->sticky = admin->cache.sticky; 2529f13230a4SSteen Hegelund return 0; 2530f13230a4SSteen Hegelund } 2531f13230a4SSteen Hegelund 2532c9da1ac1SSteen Hegelund /* Copy to host byte order */ 2533c9da1ac1SSteen Hegelund void vcap_netbytes_copy(u8 *dst, u8 *src, int count) 2534c9da1ac1SSteen Hegelund { 2535c9da1ac1SSteen Hegelund int idx; 2536c9da1ac1SSteen Hegelund 2537c9da1ac1SSteen Hegelund for (idx = 0; idx < count; ++idx, ++dst) 2538c9da1ac1SSteen Hegelund *dst = src[count - idx - 1]; 2539c9da1ac1SSteen Hegelund } 2540c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_netbytes_copy); 2541c9da1ac1SSteen Hegelund 2542c9da1ac1SSteen Hegelund /* Convert validation error code into tc extact error message */ 2543c9da1ac1SSteen Hegelund void vcap_set_tc_exterr(struct flow_cls_offload *fco, struct vcap_rule *vrule) 2544c9da1ac1SSteen Hegelund { 2545c9da1ac1SSteen Hegelund switch (vrule->exterr) { 2546c9da1ac1SSteen Hegelund case VCAP_ERR_NONE: 2547c9da1ac1SSteen Hegelund break; 2548c9da1ac1SSteen Hegelund case VCAP_ERR_NO_ADMIN: 2549c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2550c9da1ac1SSteen Hegelund "Missing VCAP instance"); 2551c9da1ac1SSteen Hegelund break; 2552c9da1ac1SSteen Hegelund case VCAP_ERR_NO_NETDEV: 2553c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2554c9da1ac1SSteen Hegelund "Missing network interface"); 2555c9da1ac1SSteen Hegelund break; 2556c9da1ac1SSteen Hegelund case VCAP_ERR_NO_KEYSET_MATCH: 2557c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2558c9da1ac1SSteen Hegelund "No keyset matched the filter keys"); 2559c9da1ac1SSteen Hegelund break; 2560c9da1ac1SSteen Hegelund case VCAP_ERR_NO_ACTIONSET_MATCH: 2561c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2562c9da1ac1SSteen Hegelund "No actionset matched the filter actions"); 2563c9da1ac1SSteen Hegelund break; 2564c9da1ac1SSteen Hegelund case VCAP_ERR_NO_PORT_KEYSET_MATCH: 2565c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2566c9da1ac1SSteen Hegelund "No port keyset matched the filter keys"); 2567c9da1ac1SSteen Hegelund break; 2568c9da1ac1SSteen Hegelund } 2569c9da1ac1SSteen Hegelund } 2570c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_set_tc_exterr); 257167d63751SSteen Hegelund 257267456717SSteen Hegelund /* Check if this port is already enabled for this VCAP instance */ 257367456717SSteen Hegelund static bool vcap_is_enabled(struct vcap_admin *admin, struct net_device *ndev, 257467456717SSteen Hegelund unsigned long cookie) 257567456717SSteen Hegelund { 257667456717SSteen Hegelund struct vcap_enabled_port *eport; 257767456717SSteen Hegelund 257867456717SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) 257967456717SSteen Hegelund if (eport->cookie == cookie || eport->ndev == ndev) 258067456717SSteen Hegelund return true; 258167456717SSteen Hegelund 258267456717SSteen Hegelund return false; 258367456717SSteen Hegelund } 258467456717SSteen Hegelund 258567456717SSteen Hegelund /* Enable this port for this VCAP instance */ 258667456717SSteen Hegelund static int vcap_enable(struct vcap_admin *admin, struct net_device *ndev, 258767456717SSteen Hegelund unsigned long cookie) 258867456717SSteen Hegelund { 258967456717SSteen Hegelund struct vcap_enabled_port *eport; 259067456717SSteen Hegelund 259167456717SSteen Hegelund eport = kzalloc(sizeof(*eport), GFP_KERNEL); 259267456717SSteen Hegelund if (!eport) 259367456717SSteen Hegelund return -ENOMEM; 259467456717SSteen Hegelund 259567456717SSteen Hegelund eport->ndev = ndev; 259667456717SSteen Hegelund eport->cookie = cookie; 259767456717SSteen Hegelund list_add_tail(&eport->list, &admin->enabled); 259867456717SSteen Hegelund 259967456717SSteen Hegelund return 0; 260067456717SSteen Hegelund } 260167456717SSteen Hegelund 260267456717SSteen Hegelund /* Disable this port for this VCAP instance */ 260367456717SSteen Hegelund static int vcap_disable(struct vcap_admin *admin, struct net_device *ndev, 260467456717SSteen Hegelund unsigned long cookie) 260567456717SSteen Hegelund { 260667456717SSteen Hegelund struct vcap_enabled_port *eport; 260767456717SSteen Hegelund 260867456717SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) { 260967456717SSteen Hegelund if (eport->cookie == cookie && eport->ndev == ndev) { 261067456717SSteen Hegelund list_del(&eport->list); 261167456717SSteen Hegelund kfree(eport); 261267456717SSteen Hegelund return 0; 261367456717SSteen Hegelund } 261467456717SSteen Hegelund } 261567456717SSteen Hegelund 261667456717SSteen Hegelund return -ENOENT; 261767456717SSteen Hegelund } 261867456717SSteen Hegelund 261967456717SSteen Hegelund /* Find the VCAP instance that enabled the port using a specific filter */ 262067456717SSteen Hegelund static struct vcap_admin *vcap_find_admin_by_cookie(struct vcap_control *vctrl, 262167456717SSteen Hegelund unsigned long cookie) 262267456717SSteen Hegelund { 262367456717SSteen Hegelund struct vcap_enabled_port *eport; 262467456717SSteen Hegelund struct vcap_admin *admin; 262567456717SSteen Hegelund 262667456717SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 262767456717SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) 262867456717SSteen Hegelund if (eport->cookie == cookie) 262967456717SSteen Hegelund return admin; 263067456717SSteen Hegelund 263167456717SSteen Hegelund return NULL; 263267456717SSteen Hegelund } 263367456717SSteen Hegelund 263467456717SSteen Hegelund /* Enable/Disable the VCAP instance lookups. Chain id 0 means disable */ 263567456717SSteen Hegelund int vcap_enable_lookups(struct vcap_control *vctrl, struct net_device *ndev, 263667456717SSteen Hegelund int chain_id, unsigned long cookie, bool enable) 263767456717SSteen Hegelund { 263867456717SSteen Hegelund struct vcap_admin *admin; 263967456717SSteen Hegelund int err; 264067456717SSteen Hegelund 264167456717SSteen Hegelund err = vcap_api_check(vctrl); 264267456717SSteen Hegelund if (err) 264367456717SSteen Hegelund return err; 264467456717SSteen Hegelund 264567456717SSteen Hegelund if (!ndev) 264667456717SSteen Hegelund return -ENODEV; 264767456717SSteen Hegelund 264867456717SSteen Hegelund if (chain_id) 264967456717SSteen Hegelund admin = vcap_find_admin(vctrl, chain_id); 265067456717SSteen Hegelund else 265167456717SSteen Hegelund admin = vcap_find_admin_by_cookie(vctrl, cookie); 265267456717SSteen Hegelund if (!admin) 265367456717SSteen Hegelund return -ENOENT; 265467456717SSteen Hegelund 265567456717SSteen Hegelund /* first instance and first chain */ 265667456717SSteen Hegelund if (admin->vinst || chain_id > admin->first_cid) 265767456717SSteen Hegelund return -EFAULT; 265867456717SSteen Hegelund 265967456717SSteen Hegelund err = vctrl->ops->enable(ndev, admin, enable); 266067456717SSteen Hegelund if (err) 266167456717SSteen Hegelund return err; 266267456717SSteen Hegelund 266367456717SSteen Hegelund if (chain_id) { 266467456717SSteen Hegelund if (vcap_is_enabled(admin, ndev, cookie)) 266567456717SSteen Hegelund return -EADDRINUSE; 266671c9de99SSteen Hegelund mutex_lock(&admin->lock); 266767456717SSteen Hegelund vcap_enable(admin, ndev, cookie); 266867456717SSteen Hegelund } else { 266971c9de99SSteen Hegelund mutex_lock(&admin->lock); 267067456717SSteen Hegelund vcap_disable(admin, ndev, cookie); 267167456717SSteen Hegelund } 267271c9de99SSteen Hegelund mutex_unlock(&admin->lock); 267367456717SSteen Hegelund 267467456717SSteen Hegelund return 0; 267567456717SSteen Hegelund } 267667456717SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_enable_lookups); 267767456717SSteen Hegelund 2678f13230a4SSteen Hegelund /* Set a rule counter id (for certain vcaps only) */ 2679f13230a4SSteen Hegelund void vcap_rule_set_counter_id(struct vcap_rule *rule, u32 counter_id) 2680f13230a4SSteen Hegelund { 2681f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2682f13230a4SSteen Hegelund 2683f13230a4SSteen Hegelund ri->counter_id = counter_id; 2684f13230a4SSteen Hegelund } 2685f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_set_counter_id); 2686f13230a4SSteen Hegelund 268740e7fe18SSteen Hegelund /* Provide all rules via a callback interface */ 268840e7fe18SSteen Hegelund int vcap_rule_iter(struct vcap_control *vctrl, 268940e7fe18SSteen Hegelund int (*callback)(void *, struct vcap_rule *), void *arg) 269040e7fe18SSteen Hegelund { 269140e7fe18SSteen Hegelund struct vcap_rule_internal *ri; 269240e7fe18SSteen Hegelund struct vcap_admin *admin; 269340e7fe18SSteen Hegelund int ret; 269440e7fe18SSteen Hegelund 269540e7fe18SSteen Hegelund ret = vcap_api_check(vctrl); 269640e7fe18SSteen Hegelund if (ret) 269740e7fe18SSteen Hegelund return ret; 269840e7fe18SSteen Hegelund 269940e7fe18SSteen Hegelund /* Iterate all rules in each VCAP instance */ 270040e7fe18SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 270140e7fe18SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) { 270240e7fe18SSteen Hegelund ret = callback(arg, &ri->data); 270340e7fe18SSteen Hegelund if (ret) 270440e7fe18SSteen Hegelund return ret; 270540e7fe18SSteen Hegelund } 270640e7fe18SSteen Hegelund } 270740e7fe18SSteen Hegelund 270840e7fe18SSteen Hegelund return 0; 270940e7fe18SSteen Hegelund } 271040e7fe18SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_iter); 271140e7fe18SSteen Hegelund 2712f13230a4SSteen Hegelund int vcap_rule_set_counter(struct vcap_rule *rule, struct vcap_counter *ctr) 2713f13230a4SSteen Hegelund { 2714f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2715f13230a4SSteen Hegelund int err; 2716f13230a4SSteen Hegelund 2717f13230a4SSteen Hegelund err = vcap_api_check(ri->vctrl); 2718f13230a4SSteen Hegelund if (err) 2719f13230a4SSteen Hegelund return err; 2720f13230a4SSteen Hegelund if (!ctr) { 2721f13230a4SSteen Hegelund pr_err("%s:%d: counter is missing\n", __func__, __LINE__); 2722f13230a4SSteen Hegelund return -EINVAL; 2723f13230a4SSteen Hegelund } 2724f13230a4SSteen Hegelund return vcap_write_counter(ri, ctr); 2725f13230a4SSteen Hegelund } 2726f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_set_counter); 2727f13230a4SSteen Hegelund 2728f13230a4SSteen Hegelund int vcap_rule_get_counter(struct vcap_rule *rule, struct vcap_counter *ctr) 2729f13230a4SSteen Hegelund { 2730f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2731f13230a4SSteen Hegelund int err; 2732f13230a4SSteen Hegelund 2733f13230a4SSteen Hegelund err = vcap_api_check(ri->vctrl); 2734f13230a4SSteen Hegelund if (err) 2735f13230a4SSteen Hegelund return err; 2736f13230a4SSteen Hegelund if (!ctr) { 2737f13230a4SSteen Hegelund pr_err("%s:%d: counter is missing\n", __func__, __LINE__); 2738f13230a4SSteen Hegelund return -EINVAL; 2739f13230a4SSteen Hegelund } 2740f13230a4SSteen Hegelund return vcap_read_counter(ri, ctr); 2741f13230a4SSteen Hegelund } 2742f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_get_counter); 2743f13230a4SSteen Hegelund 2744465a38a2SSteen Hegelund static int vcap_rule_mod_key(struct vcap_rule *rule, 2745465a38a2SSteen Hegelund enum vcap_key_field key, 2746465a38a2SSteen Hegelund enum vcap_field_type ftype, 2747465a38a2SSteen Hegelund struct vcap_client_keyfield_data *data) 2748465a38a2SSteen Hegelund { 2749465a38a2SSteen Hegelund struct vcap_client_keyfield *field; 2750465a38a2SSteen Hegelund 2751465a38a2SSteen Hegelund field = vcap_find_keyfield(rule, key); 2752465a38a2SSteen Hegelund if (!field) 2753465a38a2SSteen Hegelund return vcap_rule_add_key(rule, key, ftype, data); 2754465a38a2SSteen Hegelund vcap_copy_from_client_keyfield(rule, field, data); 2755465a38a2SSteen Hegelund return 0; 2756465a38a2SSteen Hegelund } 2757465a38a2SSteen Hegelund 2758465a38a2SSteen Hegelund /* Modify a 32 bit key field with value and mask in the rule */ 2759465a38a2SSteen Hegelund int vcap_rule_mod_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 2760465a38a2SSteen Hegelund u32 value, u32 mask) 2761465a38a2SSteen Hegelund { 2762465a38a2SSteen Hegelund struct vcap_client_keyfield_data data; 2763465a38a2SSteen Hegelund 2764465a38a2SSteen Hegelund data.u32.value = value; 2765465a38a2SSteen Hegelund data.u32.mask = mask; 2766465a38a2SSteen Hegelund return vcap_rule_mod_key(rule, key, VCAP_FIELD_U32, &data); 2767465a38a2SSteen Hegelund } 2768465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_mod_key_u32); 2769465a38a2SSteen Hegelund 2770465a38a2SSteen Hegelund static int vcap_rule_mod_action(struct vcap_rule *rule, 2771465a38a2SSteen Hegelund enum vcap_action_field action, 2772465a38a2SSteen Hegelund enum vcap_field_type ftype, 2773465a38a2SSteen Hegelund struct vcap_client_actionfield_data *data) 2774465a38a2SSteen Hegelund { 2775465a38a2SSteen Hegelund struct vcap_client_actionfield *field; 2776465a38a2SSteen Hegelund 2777465a38a2SSteen Hegelund field = vcap_find_actionfield(rule, action); 2778465a38a2SSteen Hegelund if (!field) 2779465a38a2SSteen Hegelund return vcap_rule_add_action(rule, action, ftype, data); 2780465a38a2SSteen Hegelund vcap_copy_from_client_actionfield(rule, field, data); 2781465a38a2SSteen Hegelund return 0; 2782465a38a2SSteen Hegelund } 2783465a38a2SSteen Hegelund 2784465a38a2SSteen Hegelund /* Modify a 32 bit action field with value in the rule */ 2785465a38a2SSteen Hegelund int vcap_rule_mod_action_u32(struct vcap_rule *rule, 2786465a38a2SSteen Hegelund enum vcap_action_field action, 2787465a38a2SSteen Hegelund u32 value) 2788465a38a2SSteen Hegelund { 2789465a38a2SSteen Hegelund struct vcap_client_actionfield_data data; 2790465a38a2SSteen Hegelund 2791465a38a2SSteen Hegelund data.u32.value = value; 2792465a38a2SSteen Hegelund return vcap_rule_mod_action(rule, action, VCAP_FIELD_U32, &data); 2793465a38a2SSteen Hegelund } 2794465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_mod_action_u32); 2795465a38a2SSteen Hegelund 2796465a38a2SSteen Hegelund /* Drop keys in a keylist and any keys that are not supported by the keyset */ 2797465a38a2SSteen Hegelund int vcap_filter_rule_keys(struct vcap_rule *rule, 2798465a38a2SSteen Hegelund enum vcap_key_field keylist[], int length, 2799465a38a2SSteen Hegelund bool drop_unsupported) 2800465a38a2SSteen Hegelund { 2801465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2802465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf, *next_ckf; 2803465a38a2SSteen Hegelund const struct vcap_field *fields; 2804465a38a2SSteen Hegelund enum vcap_key_field key; 2805465a38a2SSteen Hegelund int err = 0; 2806465a38a2SSteen Hegelund int idx; 2807465a38a2SSteen Hegelund 2808465a38a2SSteen Hegelund if (length > 0) { 2809465a38a2SSteen Hegelund err = -EEXIST; 2810465a38a2SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, 2811465a38a2SSteen Hegelund &ri->data.keyfields, ctrl.list) { 2812465a38a2SSteen Hegelund key = ckf->ctrl.key; 2813465a38a2SSteen Hegelund for (idx = 0; idx < length; ++idx) 2814465a38a2SSteen Hegelund if (key == keylist[idx]) { 2815465a38a2SSteen Hegelund list_del(&ckf->ctrl.list); 2816465a38a2SSteen Hegelund kfree(ckf); 2817465a38a2SSteen Hegelund idx++; 2818465a38a2SSteen Hegelund err = 0; 2819465a38a2SSteen Hegelund } 2820465a38a2SSteen Hegelund } 2821465a38a2SSteen Hegelund } 2822465a38a2SSteen Hegelund if (drop_unsupported) { 2823465a38a2SSteen Hegelund err = -EEXIST; 2824465a38a2SSteen Hegelund fields = vcap_keyfields(ri->vctrl, ri->admin->vtype, 2825465a38a2SSteen Hegelund rule->keyset); 2826465a38a2SSteen Hegelund if (!fields) 2827465a38a2SSteen Hegelund return err; 2828465a38a2SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, 2829465a38a2SSteen Hegelund &ri->data.keyfields, ctrl.list) { 2830465a38a2SSteen Hegelund key = ckf->ctrl.key; 2831465a38a2SSteen Hegelund if (fields[key].width == 0) { 2832465a38a2SSteen Hegelund list_del(&ckf->ctrl.list); 2833465a38a2SSteen Hegelund kfree(ckf); 2834465a38a2SSteen Hegelund err = 0; 2835465a38a2SSteen Hegelund } 2836465a38a2SSteen Hegelund } 2837465a38a2SSteen Hegelund } 2838465a38a2SSteen Hegelund return err; 2839465a38a2SSteen Hegelund } 2840465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_filter_rule_keys); 2841465a38a2SSteen Hegelund 2842465a38a2SSteen Hegelund /* Make a full copy of an existing rule with a new rule id */ 2843465a38a2SSteen Hegelund struct vcap_rule *vcap_copy_rule(struct vcap_rule *erule) 2844465a38a2SSteen Hegelund { 2845465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(erule); 2846465a38a2SSteen Hegelund struct vcap_client_actionfield *caf; 2847465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf; 2848465a38a2SSteen Hegelund struct vcap_rule *rule; 2849465a38a2SSteen Hegelund int err; 2850465a38a2SSteen Hegelund 2851465a38a2SSteen Hegelund err = vcap_api_check(ri->vctrl); 2852465a38a2SSteen Hegelund if (err) 2853465a38a2SSteen Hegelund return ERR_PTR(err); 2854465a38a2SSteen Hegelund 2855465a38a2SSteen Hegelund rule = vcap_alloc_rule(ri->vctrl, ri->ndev, ri->data.vcap_chain_id, 2856465a38a2SSteen Hegelund ri->data.user, ri->data.priority, 0); 2857465a38a2SSteen Hegelund if (IS_ERR(rule)) 2858465a38a2SSteen Hegelund return rule; 2859465a38a2SSteen Hegelund 2860465a38a2SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) { 2861465a38a2SSteen Hegelund /* Add a key duplicate in the new rule */ 2862465a38a2SSteen Hegelund err = vcap_rule_add_key(rule, 2863465a38a2SSteen Hegelund ckf->ctrl.key, 2864465a38a2SSteen Hegelund ckf->ctrl.type, 2865465a38a2SSteen Hegelund &ckf->data); 2866465a38a2SSteen Hegelund if (err) 2867465a38a2SSteen Hegelund goto err; 2868465a38a2SSteen Hegelund } 2869465a38a2SSteen Hegelund 2870465a38a2SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) { 2871465a38a2SSteen Hegelund /* Add a action duplicate in the new rule */ 2872465a38a2SSteen Hegelund err = vcap_rule_add_action(rule, 2873465a38a2SSteen Hegelund caf->ctrl.action, 2874465a38a2SSteen Hegelund caf->ctrl.type, 2875465a38a2SSteen Hegelund &caf->data); 2876465a38a2SSteen Hegelund if (err) 2877465a38a2SSteen Hegelund goto err; 2878465a38a2SSteen Hegelund } 2879465a38a2SSteen Hegelund return rule; 2880465a38a2SSteen Hegelund err: 2881465a38a2SSteen Hegelund vcap_free_rule(rule); 2882465a38a2SSteen Hegelund return ERR_PTR(err); 2883465a38a2SSteen Hegelund } 2884465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_copy_rule); 2885465a38a2SSteen Hegelund 288667d63751SSteen Hegelund #ifdef CONFIG_VCAP_KUNIT_TEST 288767d63751SSteen Hegelund #include "vcap_api_kunit.c" 288867d63751SSteen Hegelund #endif 2889