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 40cfd9e7b7SSteen Hegelund /* Stores the filter cookie and chain id 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 */ 45cfd9e7b7SSteen Hegelund int src_cid; /* source chain id */ 46cfd9e7b7SSteen Hegelund int dst_cid; /* destination chain id */ 4767456717SSteen Hegelund }; 4867456717SSteen Hegelund 49d4134d41SSteen Hegelund void vcap_iter_set(struct vcap_stream_iter *itr, int sw_width, 50683e05c0SSteen Hegelund const struct vcap_typegroup *tg, u32 offset) 51683e05c0SSteen Hegelund { 52683e05c0SSteen Hegelund memset(itr, 0, sizeof(*itr)); 53683e05c0SSteen Hegelund itr->offset = offset; 54683e05c0SSteen Hegelund itr->sw_width = sw_width; 55683e05c0SSteen Hegelund itr->regs_per_sw = DIV_ROUND_UP(sw_width, 32); 56683e05c0SSteen Hegelund itr->tg = tg; 57683e05c0SSteen Hegelund } 58683e05c0SSteen Hegelund 59683e05c0SSteen Hegelund static void vcap_iter_skip_tg(struct vcap_stream_iter *itr) 60683e05c0SSteen Hegelund { 61683e05c0SSteen Hegelund /* Compensate the field offset for preceding typegroups. 62683e05c0SSteen Hegelund * A typegroup table ends with an all-zero terminator. 63683e05c0SSteen Hegelund */ 64683e05c0SSteen Hegelund while (itr->tg->width && itr->offset >= itr->tg->offset) { 65683e05c0SSteen Hegelund itr->offset += itr->tg->width; 66683e05c0SSteen Hegelund itr->tg++; /* next typegroup */ 67683e05c0SSteen Hegelund } 68683e05c0SSteen Hegelund } 69683e05c0SSteen Hegelund 70d4134d41SSteen Hegelund void vcap_iter_update(struct vcap_stream_iter *itr) 71683e05c0SSteen Hegelund { 72683e05c0SSteen Hegelund int sw_idx, sw_bitpos; 73683e05c0SSteen Hegelund 74683e05c0SSteen Hegelund /* Calculate the subword index and bitposition for current bit */ 75683e05c0SSteen Hegelund sw_idx = itr->offset / itr->sw_width; 76683e05c0SSteen Hegelund sw_bitpos = itr->offset % itr->sw_width; 77683e05c0SSteen Hegelund /* Calculate the register index and bitposition for current bit */ 78683e05c0SSteen Hegelund itr->reg_idx = (sw_idx * itr->regs_per_sw) + (sw_bitpos / 32); 79683e05c0SSteen Hegelund itr->reg_bitpos = sw_bitpos % 32; 80683e05c0SSteen Hegelund } 81683e05c0SSteen Hegelund 82d4134d41SSteen Hegelund void vcap_iter_init(struct vcap_stream_iter *itr, int sw_width, 83683e05c0SSteen Hegelund const struct vcap_typegroup *tg, u32 offset) 84683e05c0SSteen Hegelund { 85683e05c0SSteen Hegelund vcap_iter_set(itr, sw_width, tg, offset); 86683e05c0SSteen Hegelund vcap_iter_skip_tg(itr); 87683e05c0SSteen Hegelund vcap_iter_update(itr); 88683e05c0SSteen Hegelund } 89683e05c0SSteen Hegelund 90d4134d41SSteen Hegelund void vcap_iter_next(struct vcap_stream_iter *itr) 91683e05c0SSteen Hegelund { 92683e05c0SSteen Hegelund itr->offset++; 93683e05c0SSteen Hegelund vcap_iter_skip_tg(itr); 94683e05c0SSteen Hegelund vcap_iter_update(itr); 95683e05c0SSteen Hegelund } 96683e05c0SSteen Hegelund 97683e05c0SSteen Hegelund static void vcap_set_bit(u32 *stream, struct vcap_stream_iter *itr, bool value) 98683e05c0SSteen Hegelund { 99683e05c0SSteen Hegelund u32 mask = BIT(itr->reg_bitpos); 100683e05c0SSteen Hegelund u32 *p = &stream[itr->reg_idx]; 101683e05c0SSteen Hegelund 102683e05c0SSteen Hegelund if (value) 103683e05c0SSteen Hegelund *p |= mask; 104683e05c0SSteen Hegelund else 105683e05c0SSteen Hegelund *p &= ~mask; 106683e05c0SSteen Hegelund } 107683e05c0SSteen Hegelund 108683e05c0SSteen Hegelund static void vcap_encode_bit(u32 *stream, struct vcap_stream_iter *itr, bool val) 109683e05c0SSteen Hegelund { 110683e05c0SSteen Hegelund /* When intersected by a type group field, stream the type group bits 111683e05c0SSteen Hegelund * before continuing with the value bit 112683e05c0SSteen Hegelund */ 113683e05c0SSteen Hegelund while (itr->tg->width && 114683e05c0SSteen Hegelund itr->offset >= itr->tg->offset && 115683e05c0SSteen Hegelund itr->offset < itr->tg->offset + itr->tg->width) { 116683e05c0SSteen Hegelund int tg_bitpos = itr->tg->offset - itr->offset; 117683e05c0SSteen Hegelund 118683e05c0SSteen Hegelund vcap_set_bit(stream, itr, (itr->tg->value >> tg_bitpos) & 0x1); 119683e05c0SSteen Hegelund itr->offset++; 120683e05c0SSteen Hegelund vcap_iter_update(itr); 121683e05c0SSteen Hegelund } 122683e05c0SSteen Hegelund vcap_set_bit(stream, itr, val); 123683e05c0SSteen Hegelund } 124683e05c0SSteen Hegelund 125683e05c0SSteen Hegelund static void vcap_encode_field(u32 *stream, struct vcap_stream_iter *itr, 126683e05c0SSteen Hegelund int width, const u8 *value) 127683e05c0SSteen Hegelund { 128683e05c0SSteen Hegelund int idx; 129683e05c0SSteen Hegelund 130683e05c0SSteen Hegelund /* Loop over the field value bits and add the value bits one by one to 131683e05c0SSteen Hegelund * the output stream. 132683e05c0SSteen Hegelund */ 133683e05c0SSteen Hegelund for (idx = 0; idx < width; idx++) { 134683e05c0SSteen Hegelund u8 bidx = idx & GENMASK(2, 0); 135683e05c0SSteen Hegelund 136683e05c0SSteen Hegelund /* Encode one field value bit */ 137683e05c0SSteen Hegelund vcap_encode_bit(stream, itr, (value[idx / 8] >> bidx) & 0x1); 138683e05c0SSteen Hegelund vcap_iter_next(itr); 139683e05c0SSteen Hegelund } 140683e05c0SSteen Hegelund } 141683e05c0SSteen Hegelund 142683e05c0SSteen Hegelund static void vcap_encode_typegroups(u32 *stream, int sw_width, 143683e05c0SSteen Hegelund const struct vcap_typegroup *tg, 144683e05c0SSteen Hegelund bool mask) 145683e05c0SSteen Hegelund { 146683e05c0SSteen Hegelund struct vcap_stream_iter iter; 147683e05c0SSteen Hegelund int idx; 148683e05c0SSteen Hegelund 149683e05c0SSteen Hegelund /* Mask bits must be set to zeros (inverted later when writing to the 150683e05c0SSteen Hegelund * mask cache register), so that the mask typegroup bits consist of 151683e05c0SSteen Hegelund * match-1 or match-0, or both 152683e05c0SSteen Hegelund */ 153683e05c0SSteen Hegelund vcap_iter_set(&iter, sw_width, tg, 0); 154683e05c0SSteen Hegelund while (iter.tg->width) { 155683e05c0SSteen Hegelund /* Set position to current typegroup bit */ 156683e05c0SSteen Hegelund iter.offset = iter.tg->offset; 157683e05c0SSteen Hegelund vcap_iter_update(&iter); 158683e05c0SSteen Hegelund for (idx = 0; idx < iter.tg->width; idx++) { 159683e05c0SSteen Hegelund /* Iterate over current typegroup bits. Mask typegroup 160683e05c0SSteen Hegelund * bits are always set 161683e05c0SSteen Hegelund */ 162683e05c0SSteen Hegelund if (mask) 163683e05c0SSteen Hegelund vcap_set_bit(stream, &iter, 0x1); 164683e05c0SSteen Hegelund else 165683e05c0SSteen Hegelund vcap_set_bit(stream, &iter, 166683e05c0SSteen Hegelund (iter.tg->value >> idx) & 0x1); 167683e05c0SSteen Hegelund iter.offset++; 168683e05c0SSteen Hegelund vcap_iter_update(&iter); 169683e05c0SSteen Hegelund } 170683e05c0SSteen Hegelund iter.tg++; /* next typegroup */ 171683e05c0SSteen Hegelund } 172683e05c0SSteen Hegelund } 173683e05c0SSteen Hegelund 174610c32b2SHoratiu Vultur static bool vcap_bitarray_zero(int width, u8 *value) 175610c32b2SHoratiu Vultur { 176610c32b2SHoratiu Vultur int bytes = DIV_ROUND_UP(width, BITS_PER_BYTE); 177610c32b2SHoratiu Vultur u8 total = 0, bmask = 0xff; 178610c32b2SHoratiu Vultur int rwidth = width; 179610c32b2SHoratiu Vultur int idx; 180610c32b2SHoratiu Vultur 181610c32b2SHoratiu Vultur for (idx = 0; idx < bytes; ++idx, rwidth -= BITS_PER_BYTE) { 182610c32b2SHoratiu Vultur if (rwidth && rwidth < BITS_PER_BYTE) 183610c32b2SHoratiu Vultur bmask = (1 << rwidth) - 1; 184610c32b2SHoratiu Vultur total += value[idx] & bmask; 185610c32b2SHoratiu Vultur } 186610c32b2SHoratiu Vultur return total == 0; 187610c32b2SHoratiu Vultur } 188610c32b2SHoratiu Vultur 189610c32b2SHoratiu Vultur static bool vcap_get_bit(u32 *stream, struct vcap_stream_iter *itr) 190610c32b2SHoratiu Vultur { 191610c32b2SHoratiu Vultur u32 mask = BIT(itr->reg_bitpos); 192610c32b2SHoratiu Vultur u32 *p = &stream[itr->reg_idx]; 193610c32b2SHoratiu Vultur 194610c32b2SHoratiu Vultur return !!(*p & mask); 195610c32b2SHoratiu Vultur } 196610c32b2SHoratiu Vultur 197610c32b2SHoratiu Vultur static void vcap_decode_field(u32 *stream, struct vcap_stream_iter *itr, 198610c32b2SHoratiu Vultur int width, u8 *value) 199610c32b2SHoratiu Vultur { 200610c32b2SHoratiu Vultur int idx; 201610c32b2SHoratiu Vultur 202610c32b2SHoratiu Vultur /* Loop over the field value bits and get the field bits and 203610c32b2SHoratiu Vultur * set them in the output value byte array 204610c32b2SHoratiu Vultur */ 205610c32b2SHoratiu Vultur for (idx = 0; idx < width; idx++) { 206610c32b2SHoratiu Vultur u8 bidx = idx & 0x7; 207610c32b2SHoratiu Vultur 208610c32b2SHoratiu Vultur /* Decode one field value bit */ 209610c32b2SHoratiu Vultur if (vcap_get_bit(stream, itr)) 210610c32b2SHoratiu Vultur *value |= 1 << bidx; 211610c32b2SHoratiu Vultur vcap_iter_next(itr); 212610c32b2SHoratiu Vultur if (bidx == 7) 213610c32b2SHoratiu Vultur value++; 214610c32b2SHoratiu Vultur } 215610c32b2SHoratiu Vultur } 216610c32b2SHoratiu Vultur 217610c32b2SHoratiu Vultur /* Verify that the type id in the stream matches the type id of the keyset */ 218610c32b2SHoratiu Vultur static bool vcap_verify_keystream_keyset(struct vcap_control *vctrl, 219610c32b2SHoratiu Vultur enum vcap_type vt, 220610c32b2SHoratiu Vultur u32 *keystream, 221610c32b2SHoratiu Vultur u32 *mskstream, 222610c32b2SHoratiu Vultur enum vcap_keyfield_set keyset) 223610c32b2SHoratiu Vultur { 224610c32b2SHoratiu Vultur const struct vcap_info *vcap = &vctrl->vcaps[vt]; 225610c32b2SHoratiu Vultur const struct vcap_field *typefld; 226610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 227610c32b2SHoratiu Vultur const struct vcap_field *fields; 228610c32b2SHoratiu Vultur struct vcap_stream_iter iter; 229610c32b2SHoratiu Vultur const struct vcap_set *info; 230610c32b2SHoratiu Vultur u32 value = 0; 231610c32b2SHoratiu Vultur u32 mask = 0; 232610c32b2SHoratiu Vultur 233610c32b2SHoratiu Vultur if (vcap_keyfield_count(vctrl, vt, keyset) == 0) 234610c32b2SHoratiu Vultur return false; 235610c32b2SHoratiu Vultur 236610c32b2SHoratiu Vultur info = vcap_keyfieldset(vctrl, vt, keyset); 237610c32b2SHoratiu Vultur /* Check that the keyset is valid */ 238610c32b2SHoratiu Vultur if (!info) 239610c32b2SHoratiu Vultur return false; 240610c32b2SHoratiu Vultur 241610c32b2SHoratiu Vultur /* a type_id of value -1 means that there is no type field */ 242610c32b2SHoratiu Vultur if (info->type_id == (u8)-1) 243610c32b2SHoratiu Vultur return true; 244610c32b2SHoratiu Vultur 245610c32b2SHoratiu Vultur /* Get a valid typegroup for the specific keyset */ 246610c32b2SHoratiu Vultur tgt = vcap_keyfield_typegroup(vctrl, vt, keyset); 247610c32b2SHoratiu Vultur if (!tgt) 248610c32b2SHoratiu Vultur return false; 249610c32b2SHoratiu Vultur 250610c32b2SHoratiu Vultur fields = vcap_keyfields(vctrl, vt, keyset); 251610c32b2SHoratiu Vultur if (!fields) 252610c32b2SHoratiu Vultur return false; 253610c32b2SHoratiu Vultur 254610c32b2SHoratiu Vultur typefld = &fields[VCAP_KF_TYPE]; 255610c32b2SHoratiu Vultur vcap_iter_init(&iter, vcap->sw_width, tgt, typefld->offset); 256610c32b2SHoratiu Vultur vcap_decode_field(mskstream, &iter, typefld->width, (u8 *)&mask); 257610c32b2SHoratiu Vultur /* no type info if there are no mask bits */ 258610c32b2SHoratiu Vultur if (vcap_bitarray_zero(typefld->width, (u8 *)&mask)) 259610c32b2SHoratiu Vultur return false; 260610c32b2SHoratiu Vultur 261610c32b2SHoratiu Vultur /* Get the value of the type field in the stream and compare to the 262610c32b2SHoratiu Vultur * one define in the vcap keyset 263610c32b2SHoratiu Vultur */ 264610c32b2SHoratiu Vultur vcap_iter_init(&iter, vcap->sw_width, tgt, typefld->offset); 265610c32b2SHoratiu Vultur vcap_decode_field(keystream, &iter, typefld->width, (u8 *)&value); 266610c32b2SHoratiu Vultur 267610c32b2SHoratiu Vultur return (value & mask) == (info->type_id & mask); 268610c32b2SHoratiu Vultur } 269610c32b2SHoratiu Vultur 270610c32b2SHoratiu Vultur /* Verify that the typegroup bits have the correct values */ 271610c32b2SHoratiu Vultur static int vcap_verify_typegroups(u32 *stream, int sw_width, 272610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt, bool mask, 273610c32b2SHoratiu Vultur int sw_max) 274610c32b2SHoratiu Vultur { 275610c32b2SHoratiu Vultur struct vcap_stream_iter iter; 276610c32b2SHoratiu Vultur int sw_cnt, idx; 277610c32b2SHoratiu Vultur 278610c32b2SHoratiu Vultur vcap_iter_set(&iter, sw_width, tgt, 0); 279610c32b2SHoratiu Vultur sw_cnt = 0; 280610c32b2SHoratiu Vultur while (iter.tg->width) { 281610c32b2SHoratiu Vultur u32 value = 0; 282610c32b2SHoratiu Vultur u32 tg_value = iter.tg->value; 283610c32b2SHoratiu Vultur 284610c32b2SHoratiu Vultur if (mask) 285610c32b2SHoratiu Vultur tg_value = (1 << iter.tg->width) - 1; 286610c32b2SHoratiu Vultur /* Set position to current typegroup bit */ 287610c32b2SHoratiu Vultur iter.offset = iter.tg->offset; 288610c32b2SHoratiu Vultur vcap_iter_update(&iter); 289610c32b2SHoratiu Vultur for (idx = 0; idx < iter.tg->width; idx++) { 290610c32b2SHoratiu Vultur /* Decode one typegroup bit */ 291610c32b2SHoratiu Vultur if (vcap_get_bit(stream, &iter)) 292610c32b2SHoratiu Vultur value |= 1 << idx; 293610c32b2SHoratiu Vultur iter.offset++; 294610c32b2SHoratiu Vultur vcap_iter_update(&iter); 295610c32b2SHoratiu Vultur } 296610c32b2SHoratiu Vultur if (value != tg_value) 297610c32b2SHoratiu Vultur return -EINVAL; 298610c32b2SHoratiu Vultur iter.tg++; /* next typegroup */ 299610c32b2SHoratiu Vultur sw_cnt++; 300610c32b2SHoratiu Vultur /* Stop checking more typegroups */ 301610c32b2SHoratiu Vultur if (sw_max && sw_cnt >= sw_max) 302610c32b2SHoratiu Vultur break; 303610c32b2SHoratiu Vultur } 304610c32b2SHoratiu Vultur return 0; 305610c32b2SHoratiu Vultur } 306610c32b2SHoratiu Vultur 307610c32b2SHoratiu Vultur /* Find the subword width of the key typegroup that matches the stream data */ 308610c32b2SHoratiu Vultur static int vcap_find_keystream_typegroup_sw(struct vcap_control *vctrl, 309610c32b2SHoratiu Vultur enum vcap_type vt, u32 *stream, 310610c32b2SHoratiu Vultur bool mask, int sw_max) 311610c32b2SHoratiu Vultur { 312610c32b2SHoratiu Vultur const struct vcap_typegroup **tgt; 313610c32b2SHoratiu Vultur int sw_idx, res; 314610c32b2SHoratiu Vultur 315610c32b2SHoratiu Vultur tgt = vctrl->vcaps[vt].keyfield_set_typegroups; 316610c32b2SHoratiu Vultur /* Try the longest subword match first */ 317610c32b2SHoratiu Vultur for (sw_idx = vctrl->vcaps[vt].sw_count; sw_idx >= 0; sw_idx--) { 318610c32b2SHoratiu Vultur if (!tgt[sw_idx]) 319610c32b2SHoratiu Vultur continue; 320610c32b2SHoratiu Vultur 321610c32b2SHoratiu Vultur res = vcap_verify_typegroups(stream, vctrl->vcaps[vt].sw_width, 322610c32b2SHoratiu Vultur tgt[sw_idx], mask, sw_max); 323610c32b2SHoratiu Vultur if (res == 0) 324610c32b2SHoratiu Vultur return sw_idx; 325610c32b2SHoratiu Vultur } 326610c32b2SHoratiu Vultur return -EINVAL; 327610c32b2SHoratiu Vultur } 328610c32b2SHoratiu Vultur 329610c32b2SHoratiu Vultur /* Verify that the typegroup information, subword count, keyset and type id 330610c32b2SHoratiu Vultur * are in sync and correct, return the list of matchin keysets 331610c32b2SHoratiu Vultur */ 332610c32b2SHoratiu Vultur int 333610c32b2SHoratiu Vultur vcap_find_keystream_keysets(struct vcap_control *vctrl, 334610c32b2SHoratiu Vultur enum vcap_type vt, 335610c32b2SHoratiu Vultur u32 *keystream, 336610c32b2SHoratiu Vultur u32 *mskstream, 337610c32b2SHoratiu Vultur bool mask, int sw_max, 338610c32b2SHoratiu Vultur struct vcap_keyset_list *kslist) 339610c32b2SHoratiu Vultur { 340610c32b2SHoratiu Vultur const struct vcap_set *keyfield_set; 341610c32b2SHoratiu Vultur int sw_count, idx; 342610c32b2SHoratiu Vultur 343610c32b2SHoratiu Vultur sw_count = vcap_find_keystream_typegroup_sw(vctrl, vt, keystream, mask, 344610c32b2SHoratiu Vultur sw_max); 345610c32b2SHoratiu Vultur if (sw_count < 0) 346610c32b2SHoratiu Vultur return sw_count; 347610c32b2SHoratiu Vultur 348610c32b2SHoratiu Vultur keyfield_set = vctrl->vcaps[vt].keyfield_set; 349610c32b2SHoratiu Vultur for (idx = 0; idx < vctrl->vcaps[vt].keyfield_set_size; ++idx) { 350610c32b2SHoratiu Vultur if (keyfield_set[idx].sw_per_item != sw_count) 351610c32b2SHoratiu Vultur continue; 352610c32b2SHoratiu Vultur 353610c32b2SHoratiu Vultur if (vcap_verify_keystream_keyset(vctrl, vt, keystream, 354610c32b2SHoratiu Vultur mskstream, idx)) 355610c32b2SHoratiu Vultur vcap_keyset_list_add(kslist, idx); 356610c32b2SHoratiu Vultur } 357610c32b2SHoratiu Vultur if (kslist->cnt > 0) 358610c32b2SHoratiu Vultur return 0; 359610c32b2SHoratiu Vultur return -EINVAL; 360610c32b2SHoratiu Vultur } 361610c32b2SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_find_keystream_keysets); 362610c32b2SHoratiu Vultur 363610c32b2SHoratiu Vultur /* Read key data from a VCAP address and discover if there are any rule keysets 364610c32b2SHoratiu Vultur * here 365610c32b2SHoratiu Vultur */ 366610c32b2SHoratiu Vultur int vcap_addr_keysets(struct vcap_control *vctrl, 367610c32b2SHoratiu Vultur struct net_device *ndev, 368610c32b2SHoratiu Vultur struct vcap_admin *admin, 369610c32b2SHoratiu Vultur int addr, 370610c32b2SHoratiu Vultur struct vcap_keyset_list *kslist) 371610c32b2SHoratiu Vultur { 372610c32b2SHoratiu Vultur enum vcap_type vt = admin->vtype; 373610c32b2SHoratiu Vultur int keyset_sw_regs, idx; 374610c32b2SHoratiu Vultur u32 key = 0, mask = 0; 375610c32b2SHoratiu Vultur 376610c32b2SHoratiu Vultur /* Read the cache at the specified address */ 377610c32b2SHoratiu Vultur keyset_sw_regs = DIV_ROUND_UP(vctrl->vcaps[vt].sw_width, 32); 378610c32b2SHoratiu Vultur vctrl->ops->update(ndev, admin, VCAP_CMD_READ, VCAP_SEL_ALL, addr); 379610c32b2SHoratiu Vultur vctrl->ops->cache_read(ndev, admin, VCAP_SEL_ENTRY, 0, 380610c32b2SHoratiu Vultur keyset_sw_regs); 381610c32b2SHoratiu Vultur /* Skip uninitialized key/mask entries */ 382610c32b2SHoratiu Vultur for (idx = 0; idx < keyset_sw_regs; ++idx) { 383610c32b2SHoratiu Vultur key |= ~admin->cache.keystream[idx]; 384610c32b2SHoratiu Vultur mask |= admin->cache.maskstream[idx]; 385610c32b2SHoratiu Vultur } 386610c32b2SHoratiu Vultur if (key == 0 && mask == 0) 387610c32b2SHoratiu Vultur return -EINVAL; 388610c32b2SHoratiu Vultur /* Decode and locate the keysets */ 389610c32b2SHoratiu Vultur return vcap_find_keystream_keysets(vctrl, vt, admin->cache.keystream, 390610c32b2SHoratiu Vultur admin->cache.maskstream, false, 0, 391610c32b2SHoratiu Vultur kslist); 392610c32b2SHoratiu Vultur } 393610c32b2SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_addr_keysets); 394610c32b2SHoratiu Vultur 39546be056eSSteen Hegelund /* Return the list of keyfields for the keyset */ 396d4134d41SSteen Hegelund const struct vcap_field *vcap_keyfields(struct vcap_control *vctrl, 39746be056eSSteen Hegelund enum vcap_type vt, 39846be056eSSteen Hegelund enum vcap_keyfield_set keyset) 39946be056eSSteen Hegelund { 40046be056eSSteen Hegelund /* Check that the keyset exists in the vcap keyset list */ 40146be056eSSteen Hegelund if (keyset >= vctrl->vcaps[vt].keyfield_set_size) 40246be056eSSteen Hegelund return NULL; 40346be056eSSteen Hegelund return vctrl->vcaps[vt].keyfield_set_map[keyset]; 40446be056eSSteen Hegelund } 40546be056eSSteen Hegelund 4068e10490bSSteen Hegelund /* Return the keyset information for the keyset */ 407d4134d41SSteen Hegelund const struct vcap_set *vcap_keyfieldset(struct vcap_control *vctrl, 4088e10490bSSteen Hegelund enum vcap_type vt, 4098e10490bSSteen Hegelund enum vcap_keyfield_set keyset) 4108e10490bSSteen Hegelund { 4118e10490bSSteen Hegelund const struct vcap_set *kset; 4128e10490bSSteen Hegelund 4138e10490bSSteen Hegelund /* Check that the keyset exists in the vcap keyset list */ 4148e10490bSSteen Hegelund if (keyset >= vctrl->vcaps[vt].keyfield_set_size) 4158e10490bSSteen Hegelund return NULL; 4168e10490bSSteen Hegelund kset = &vctrl->vcaps[vt].keyfield_set[keyset]; 4178e10490bSSteen Hegelund if (kset->sw_per_item == 0 || kset->sw_per_item > vctrl->vcaps[vt].sw_count) 4188e10490bSSteen Hegelund return NULL; 4198e10490bSSteen Hegelund return kset; 4208e10490bSSteen Hegelund } 421465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyfieldset); 4228e10490bSSteen Hegelund 423683e05c0SSteen Hegelund /* Return the typegroup table for the matching keyset (using subword size) */ 424d4134d41SSteen Hegelund const struct vcap_typegroup * 425683e05c0SSteen Hegelund vcap_keyfield_typegroup(struct vcap_control *vctrl, 426683e05c0SSteen Hegelund enum vcap_type vt, enum vcap_keyfield_set keyset) 427683e05c0SSteen Hegelund { 428683e05c0SSteen Hegelund const struct vcap_set *kset = vcap_keyfieldset(vctrl, vt, keyset); 429683e05c0SSteen Hegelund 430683e05c0SSteen Hegelund /* Check that the keyset is valid */ 431683e05c0SSteen Hegelund if (!kset) 432683e05c0SSteen Hegelund return NULL; 433683e05c0SSteen Hegelund return vctrl->vcaps[vt].keyfield_set_typegroups[kset->sw_per_item]; 434683e05c0SSteen Hegelund } 435683e05c0SSteen Hegelund 436683e05c0SSteen Hegelund /* Return the number of keyfields in the keyset */ 437d4134d41SSteen Hegelund int vcap_keyfield_count(struct vcap_control *vctrl, 438683e05c0SSteen Hegelund enum vcap_type vt, enum vcap_keyfield_set keyset) 439683e05c0SSteen Hegelund { 440683e05c0SSteen Hegelund /* Check that the keyset exists in the vcap keyset list */ 441683e05c0SSteen Hegelund if (keyset >= vctrl->vcaps[vt].keyfield_set_size) 442683e05c0SSteen Hegelund return 0; 443683e05c0SSteen Hegelund return vctrl->vcaps[vt].keyfield_set_map_size[keyset]; 444683e05c0SSteen Hegelund } 445683e05c0SSteen Hegelund 446683e05c0SSteen Hegelund static void vcap_encode_keyfield(struct vcap_rule_internal *ri, 447683e05c0SSteen Hegelund const struct vcap_client_keyfield *kf, 448683e05c0SSteen Hegelund const struct vcap_field *rf, 449683e05c0SSteen Hegelund const struct vcap_typegroup *tgt) 450683e05c0SSteen Hegelund { 451683e05c0SSteen Hegelund int sw_width = ri->vctrl->vcaps[ri->admin->vtype].sw_width; 452683e05c0SSteen Hegelund struct vcap_cache_data *cache = &ri->admin->cache; 453683e05c0SSteen Hegelund struct vcap_stream_iter iter; 454683e05c0SSteen Hegelund const u8 *value, *mask; 455683e05c0SSteen Hegelund 456683e05c0SSteen Hegelund /* Encode the fields for the key and the mask in their respective 457683e05c0SSteen Hegelund * streams, respecting the subword width. 458683e05c0SSteen Hegelund */ 459683e05c0SSteen Hegelund switch (kf->ctrl.type) { 460683e05c0SSteen Hegelund case VCAP_FIELD_BIT: 461683e05c0SSteen Hegelund value = &kf->data.u1.value; 462683e05c0SSteen Hegelund mask = &kf->data.u1.mask; 463683e05c0SSteen Hegelund break; 464683e05c0SSteen Hegelund case VCAP_FIELD_U32: 465683e05c0SSteen Hegelund value = (const u8 *)&kf->data.u32.value; 466683e05c0SSteen Hegelund mask = (const u8 *)&kf->data.u32.mask; 467683e05c0SSteen Hegelund break; 468683e05c0SSteen Hegelund case VCAP_FIELD_U48: 469683e05c0SSteen Hegelund value = kf->data.u48.value; 470683e05c0SSteen Hegelund mask = kf->data.u48.mask; 471683e05c0SSteen Hegelund break; 472683e05c0SSteen Hegelund case VCAP_FIELD_U56: 473683e05c0SSteen Hegelund value = kf->data.u56.value; 474683e05c0SSteen Hegelund mask = kf->data.u56.mask; 475683e05c0SSteen Hegelund break; 476683e05c0SSteen Hegelund case VCAP_FIELD_U64: 477683e05c0SSteen Hegelund value = kf->data.u64.value; 478683e05c0SSteen Hegelund mask = kf->data.u64.mask; 479683e05c0SSteen Hegelund break; 480683e05c0SSteen Hegelund case VCAP_FIELD_U72: 481683e05c0SSteen Hegelund value = kf->data.u72.value; 482683e05c0SSteen Hegelund mask = kf->data.u72.mask; 483683e05c0SSteen Hegelund break; 484683e05c0SSteen Hegelund case VCAP_FIELD_U112: 485683e05c0SSteen Hegelund value = kf->data.u112.value; 486683e05c0SSteen Hegelund mask = kf->data.u112.mask; 487683e05c0SSteen Hegelund break; 488683e05c0SSteen Hegelund case VCAP_FIELD_U128: 489683e05c0SSteen Hegelund value = kf->data.u128.value; 490683e05c0SSteen Hegelund mask = kf->data.u128.mask; 491683e05c0SSteen Hegelund break; 492683e05c0SSteen Hegelund } 493683e05c0SSteen Hegelund vcap_iter_init(&iter, sw_width, tgt, rf->offset); 494683e05c0SSteen Hegelund vcap_encode_field(cache->keystream, &iter, rf->width, value); 495683e05c0SSteen Hegelund vcap_iter_init(&iter, sw_width, tgt, rf->offset); 496683e05c0SSteen Hegelund vcap_encode_field(cache->maskstream, &iter, rf->width, mask); 497683e05c0SSteen Hegelund } 498683e05c0SSteen Hegelund 499683e05c0SSteen Hegelund static void vcap_encode_keyfield_typegroups(struct vcap_control *vctrl, 500683e05c0SSteen Hegelund struct vcap_rule_internal *ri, 501683e05c0SSteen Hegelund const struct vcap_typegroup *tgt) 502683e05c0SSteen Hegelund { 503683e05c0SSteen Hegelund int sw_width = vctrl->vcaps[ri->admin->vtype].sw_width; 504683e05c0SSteen Hegelund struct vcap_cache_data *cache = &ri->admin->cache; 505683e05c0SSteen Hegelund 506683e05c0SSteen Hegelund /* Encode the typegroup bits for the key and the mask in their streams, 507683e05c0SSteen Hegelund * respecting the subword width. 508683e05c0SSteen Hegelund */ 509683e05c0SSteen Hegelund vcap_encode_typegroups(cache->keystream, sw_width, tgt, false); 510683e05c0SSteen Hegelund vcap_encode_typegroups(cache->maskstream, sw_width, tgt, true); 511683e05c0SSteen Hegelund } 512683e05c0SSteen Hegelund 51333e3a273SSteen Hegelund /* Copy data from src to dst but reverse the data in chunks of 32bits. 51433e3a273SSteen Hegelund * For example if src is 00:11:22:33:44:55 where 55 is LSB the dst will 51533e3a273SSteen Hegelund * have the value 22:33:44:55:00:11. 51633e3a273SSteen Hegelund */ 51733e3a273SSteen Hegelund static void vcap_copy_to_w32be(u8 *dst, const u8 *src, int size) 51833e3a273SSteen Hegelund { 51933e3a273SSteen Hegelund for (int idx = 0; idx < size; ++idx) { 52033e3a273SSteen Hegelund int first_byte_index = 0; 52133e3a273SSteen Hegelund int nidx; 52233e3a273SSteen Hegelund 52333e3a273SSteen Hegelund first_byte_index = size - (((idx >> 2) + 1) << 2); 52433e3a273SSteen Hegelund if (first_byte_index < 0) 52533e3a273SSteen Hegelund first_byte_index = 0; 52633e3a273SSteen Hegelund nidx = idx + first_byte_index - (idx & ~0x3); 52733e3a273SSteen Hegelund dst[nidx] = src[idx]; 52833e3a273SSteen Hegelund } 52933e3a273SSteen Hegelund } 53033e3a273SSteen Hegelund 53133e3a273SSteen Hegelund static void 53233e3a273SSteen Hegelund vcap_copy_from_client_keyfield(struct vcap_rule *rule, 53333e3a273SSteen Hegelund struct vcap_client_keyfield *dst, 53433e3a273SSteen Hegelund const struct vcap_client_keyfield *src) 53533e3a273SSteen Hegelund { 53633e3a273SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 53733e3a273SSteen Hegelund const struct vcap_client_keyfield_data *sdata; 53833e3a273SSteen Hegelund struct vcap_client_keyfield_data *ddata; 53933e3a273SSteen Hegelund int size; 54033e3a273SSteen Hegelund 54133e3a273SSteen Hegelund dst->ctrl.type = src->ctrl.type; 54233e3a273SSteen Hegelund dst->ctrl.key = src->ctrl.key; 54333e3a273SSteen Hegelund INIT_LIST_HEAD(&dst->ctrl.list); 54433e3a273SSteen Hegelund sdata = &src->data; 54533e3a273SSteen Hegelund ddata = &dst->data; 54633e3a273SSteen Hegelund 54733e3a273SSteen Hegelund if (!ri->admin->w32be) { 54833e3a273SSteen Hegelund memcpy(ddata, sdata, sizeof(dst->data)); 54933e3a273SSteen Hegelund return; 55033e3a273SSteen Hegelund } 55133e3a273SSteen Hegelund 55233e3a273SSteen Hegelund size = keyfield_size_table[dst->ctrl.type] / 2; 55333e3a273SSteen Hegelund 55433e3a273SSteen Hegelund switch (dst->ctrl.type) { 55533e3a273SSteen Hegelund case VCAP_FIELD_BIT: 55633e3a273SSteen Hegelund case VCAP_FIELD_U32: 55733e3a273SSteen Hegelund memcpy(ddata, sdata, sizeof(dst->data)); 55833e3a273SSteen Hegelund break; 55933e3a273SSteen Hegelund case VCAP_FIELD_U48: 56033e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u48.value, src->data.u48.value, size); 56133e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u48.mask, src->data.u48.mask, size); 56233e3a273SSteen Hegelund break; 56333e3a273SSteen Hegelund case VCAP_FIELD_U56: 56433e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u56.value, sdata->u56.value, size); 56533e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u56.mask, sdata->u56.mask, size); 56633e3a273SSteen Hegelund break; 56733e3a273SSteen Hegelund case VCAP_FIELD_U64: 56833e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u64.value, sdata->u64.value, size); 56933e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u64.mask, sdata->u64.mask, size); 57033e3a273SSteen Hegelund break; 57133e3a273SSteen Hegelund case VCAP_FIELD_U72: 57233e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u72.value, sdata->u72.value, size); 57333e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u72.mask, sdata->u72.mask, size); 57433e3a273SSteen Hegelund break; 57533e3a273SSteen Hegelund case VCAP_FIELD_U112: 57633e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u112.value, sdata->u112.value, size); 57733e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u112.mask, sdata->u112.mask, size); 57833e3a273SSteen Hegelund break; 57933e3a273SSteen Hegelund case VCAP_FIELD_U128: 58033e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u128.value, sdata->u128.value, size); 58133e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u128.mask, sdata->u128.mask, size); 58233e3a273SSteen Hegelund break; 58333e3a273SSteen Hegelund } 58433e3a273SSteen Hegelund } 58533e3a273SSteen Hegelund 58633e3a273SSteen Hegelund static void 58733e3a273SSteen Hegelund vcap_copy_from_client_actionfield(struct vcap_rule *rule, 58833e3a273SSteen Hegelund struct vcap_client_actionfield *dst, 58933e3a273SSteen Hegelund const struct vcap_client_actionfield *src) 59033e3a273SSteen Hegelund { 59133e3a273SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 59233e3a273SSteen Hegelund const struct vcap_client_actionfield_data *sdata; 59333e3a273SSteen Hegelund struct vcap_client_actionfield_data *ddata; 59433e3a273SSteen Hegelund int size; 59533e3a273SSteen Hegelund 59633e3a273SSteen Hegelund dst->ctrl.type = src->ctrl.type; 59733e3a273SSteen Hegelund dst->ctrl.action = src->ctrl.action; 59833e3a273SSteen Hegelund INIT_LIST_HEAD(&dst->ctrl.list); 59933e3a273SSteen Hegelund sdata = &src->data; 60033e3a273SSteen Hegelund ddata = &dst->data; 60133e3a273SSteen Hegelund 60233e3a273SSteen Hegelund if (!ri->admin->w32be) { 60333e3a273SSteen Hegelund memcpy(ddata, sdata, sizeof(dst->data)); 60433e3a273SSteen Hegelund return; 60533e3a273SSteen Hegelund } 60633e3a273SSteen Hegelund 60733e3a273SSteen Hegelund size = actionfield_size_table[dst->ctrl.type]; 60833e3a273SSteen Hegelund 60933e3a273SSteen Hegelund switch (dst->ctrl.type) { 61033e3a273SSteen Hegelund case VCAP_FIELD_BIT: 61133e3a273SSteen Hegelund case VCAP_FIELD_U32: 61233e3a273SSteen Hegelund memcpy(ddata, sdata, sizeof(dst->data)); 61333e3a273SSteen Hegelund break; 61433e3a273SSteen Hegelund case VCAP_FIELD_U48: 61533e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u48.value, sdata->u48.value, size); 61633e3a273SSteen Hegelund break; 61733e3a273SSteen Hegelund case VCAP_FIELD_U56: 61833e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u56.value, sdata->u56.value, size); 61933e3a273SSteen Hegelund break; 62033e3a273SSteen Hegelund case VCAP_FIELD_U64: 62133e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u64.value, sdata->u64.value, size); 62233e3a273SSteen Hegelund break; 62333e3a273SSteen Hegelund case VCAP_FIELD_U72: 62433e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u72.value, sdata->u72.value, size); 62533e3a273SSteen Hegelund break; 62633e3a273SSteen Hegelund case VCAP_FIELD_U112: 62733e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u112.value, sdata->u112.value, size); 62833e3a273SSteen Hegelund break; 62933e3a273SSteen Hegelund case VCAP_FIELD_U128: 63033e3a273SSteen Hegelund vcap_copy_to_w32be(ddata->u128.value, sdata->u128.value, size); 63133e3a273SSteen Hegelund break; 63233e3a273SSteen Hegelund } 63333e3a273SSteen Hegelund } 63433e3a273SSteen Hegelund 635683e05c0SSteen Hegelund static int vcap_encode_rule_keyset(struct vcap_rule_internal *ri) 636683e05c0SSteen Hegelund { 637683e05c0SSteen Hegelund const struct vcap_client_keyfield *ckf; 638683e05c0SSteen Hegelund const struct vcap_typegroup *tg_table; 63933e3a273SSteen Hegelund struct vcap_client_keyfield tempkf; 640683e05c0SSteen Hegelund const struct vcap_field *kf_table; 641683e05c0SSteen Hegelund int keyset_size; 642683e05c0SSteen Hegelund 643683e05c0SSteen Hegelund /* Get a valid set of fields for the specific keyset */ 644683e05c0SSteen Hegelund kf_table = vcap_keyfields(ri->vctrl, ri->admin->vtype, ri->data.keyset); 645683e05c0SSteen Hegelund if (!kf_table) { 646683e05c0SSteen Hegelund pr_err("%s:%d: no fields available for this keyset: %d\n", 647683e05c0SSteen Hegelund __func__, __LINE__, ri->data.keyset); 648683e05c0SSteen Hegelund return -EINVAL; 649683e05c0SSteen Hegelund } 650683e05c0SSteen Hegelund /* Get a valid typegroup for the specific keyset */ 651683e05c0SSteen Hegelund tg_table = vcap_keyfield_typegroup(ri->vctrl, ri->admin->vtype, 652683e05c0SSteen Hegelund ri->data.keyset); 653683e05c0SSteen Hegelund if (!tg_table) { 654683e05c0SSteen Hegelund pr_err("%s:%d: no typegroups available for this keyset: %d\n", 655683e05c0SSteen Hegelund __func__, __LINE__, ri->data.keyset); 656683e05c0SSteen Hegelund return -EINVAL; 657683e05c0SSteen Hegelund } 658683e05c0SSteen Hegelund /* Get a valid size for the specific keyset */ 659683e05c0SSteen Hegelund keyset_size = vcap_keyfield_count(ri->vctrl, ri->admin->vtype, 660683e05c0SSteen Hegelund ri->data.keyset); 661683e05c0SSteen Hegelund if (keyset_size == 0) { 662683e05c0SSteen Hegelund pr_err("%s:%d: zero field count for this keyset: %d\n", 663683e05c0SSteen Hegelund __func__, __LINE__, ri->data.keyset); 664683e05c0SSteen Hegelund return -EINVAL; 665683e05c0SSteen Hegelund } 666683e05c0SSteen Hegelund /* Iterate over the keyfields (key, mask) in the rule 667683e05c0SSteen Hegelund * and encode these bits 668683e05c0SSteen Hegelund */ 669683e05c0SSteen Hegelund if (list_empty(&ri->data.keyfields)) { 670683e05c0SSteen Hegelund pr_err("%s:%d: no keyfields in the rule\n", __func__, __LINE__); 671683e05c0SSteen Hegelund return -EINVAL; 672683e05c0SSteen Hegelund } 673683e05c0SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) { 674683e05c0SSteen Hegelund /* Check that the client entry exists in the keyset */ 675683e05c0SSteen Hegelund if (ckf->ctrl.key >= keyset_size) { 676683e05c0SSteen Hegelund pr_err("%s:%d: key %d is not in vcap\n", 677683e05c0SSteen Hegelund __func__, __LINE__, ckf->ctrl.key); 678683e05c0SSteen Hegelund return -EINVAL; 679683e05c0SSteen Hegelund } 68033e3a273SSteen Hegelund vcap_copy_from_client_keyfield(&ri->data, &tempkf, ckf); 68133e3a273SSteen Hegelund vcap_encode_keyfield(ri, &tempkf, &kf_table[ckf->ctrl.key], 68233e3a273SSteen Hegelund tg_table); 683683e05c0SSteen Hegelund } 684683e05c0SSteen Hegelund /* Add typegroup bits to the key/mask bitstreams */ 685683e05c0SSteen Hegelund vcap_encode_keyfield_typegroups(ri->vctrl, ri, tg_table); 686683e05c0SSteen Hegelund return 0; 687683e05c0SSteen Hegelund } 688683e05c0SSteen Hegelund 689683e05c0SSteen Hegelund /* Return the list of actionfields for the actionset */ 69072d84dd6SSteen Hegelund const struct vcap_field * 691683e05c0SSteen Hegelund vcap_actionfields(struct vcap_control *vctrl, 692683e05c0SSteen Hegelund enum vcap_type vt, enum vcap_actionfield_set actionset) 693683e05c0SSteen Hegelund { 694683e05c0SSteen Hegelund /* Check that the actionset exists in the vcap actionset list */ 695683e05c0SSteen Hegelund if (actionset >= vctrl->vcaps[vt].actionfield_set_size) 696683e05c0SSteen Hegelund return NULL; 697683e05c0SSteen Hegelund return vctrl->vcaps[vt].actionfield_set_map[actionset]; 698683e05c0SSteen Hegelund } 699683e05c0SSteen Hegelund 70072d84dd6SSteen Hegelund const struct vcap_set * 7018e10490bSSteen Hegelund vcap_actionfieldset(struct vcap_control *vctrl, 7028e10490bSSteen Hegelund enum vcap_type vt, enum vcap_actionfield_set actionset) 7038e10490bSSteen Hegelund { 7048e10490bSSteen Hegelund const struct vcap_set *aset; 7058e10490bSSteen Hegelund 7068e10490bSSteen Hegelund /* Check that the actionset exists in the vcap actionset list */ 7078e10490bSSteen Hegelund if (actionset >= vctrl->vcaps[vt].actionfield_set_size) 7088e10490bSSteen Hegelund return NULL; 7098e10490bSSteen Hegelund aset = &vctrl->vcaps[vt].actionfield_set[actionset]; 7108e10490bSSteen Hegelund if (aset->sw_per_item == 0 || aset->sw_per_item > vctrl->vcaps[vt].sw_count) 7118e10490bSSteen Hegelund return NULL; 7128e10490bSSteen Hegelund return aset; 7138e10490bSSteen Hegelund } 7148e10490bSSteen Hegelund 715683e05c0SSteen Hegelund /* Return the typegroup table for the matching actionset (using subword size) */ 71672d84dd6SSteen Hegelund const struct vcap_typegroup * 717683e05c0SSteen Hegelund vcap_actionfield_typegroup(struct vcap_control *vctrl, 718683e05c0SSteen Hegelund enum vcap_type vt, enum vcap_actionfield_set actionset) 719683e05c0SSteen Hegelund { 720683e05c0SSteen Hegelund const struct vcap_set *aset = vcap_actionfieldset(vctrl, vt, actionset); 721683e05c0SSteen Hegelund 722683e05c0SSteen Hegelund /* Check that the actionset is valid */ 723683e05c0SSteen Hegelund if (!aset) 724683e05c0SSteen Hegelund return NULL; 725683e05c0SSteen Hegelund return vctrl->vcaps[vt].actionfield_set_typegroups[aset->sw_per_item]; 726683e05c0SSteen Hegelund } 727683e05c0SSteen Hegelund 728683e05c0SSteen Hegelund /* Return the number of actionfields in the actionset */ 72972d84dd6SSteen Hegelund int vcap_actionfield_count(struct vcap_control *vctrl, 730683e05c0SSteen Hegelund enum vcap_type vt, 731683e05c0SSteen Hegelund enum vcap_actionfield_set actionset) 732683e05c0SSteen Hegelund { 733683e05c0SSteen Hegelund /* Check that the actionset exists in the vcap actionset list */ 734683e05c0SSteen Hegelund if (actionset >= vctrl->vcaps[vt].actionfield_set_size) 735683e05c0SSteen Hegelund return 0; 736683e05c0SSteen Hegelund return vctrl->vcaps[vt].actionfield_set_map_size[actionset]; 737683e05c0SSteen Hegelund } 738683e05c0SSteen Hegelund 739683e05c0SSteen Hegelund static void vcap_encode_actionfield(struct vcap_rule_internal *ri, 740683e05c0SSteen Hegelund const struct vcap_client_actionfield *af, 741683e05c0SSteen Hegelund const struct vcap_field *rf, 742683e05c0SSteen Hegelund const struct vcap_typegroup *tgt) 743683e05c0SSteen Hegelund { 744683e05c0SSteen Hegelund int act_width = ri->vctrl->vcaps[ri->admin->vtype].act_width; 745683e05c0SSteen Hegelund 746683e05c0SSteen Hegelund struct vcap_cache_data *cache = &ri->admin->cache; 747683e05c0SSteen Hegelund struct vcap_stream_iter iter; 748683e05c0SSteen Hegelund const u8 *value; 749683e05c0SSteen Hegelund 750683e05c0SSteen Hegelund /* Encode the action field in the stream, respecting the subword width */ 751683e05c0SSteen Hegelund switch (af->ctrl.type) { 752683e05c0SSteen Hegelund case VCAP_FIELD_BIT: 753683e05c0SSteen Hegelund value = &af->data.u1.value; 754683e05c0SSteen Hegelund break; 755683e05c0SSteen Hegelund case VCAP_FIELD_U32: 756683e05c0SSteen Hegelund value = (const u8 *)&af->data.u32.value; 757683e05c0SSteen Hegelund break; 758683e05c0SSteen Hegelund case VCAP_FIELD_U48: 759683e05c0SSteen Hegelund value = af->data.u48.value; 760683e05c0SSteen Hegelund break; 761683e05c0SSteen Hegelund case VCAP_FIELD_U56: 762683e05c0SSteen Hegelund value = af->data.u56.value; 763683e05c0SSteen Hegelund break; 764683e05c0SSteen Hegelund case VCAP_FIELD_U64: 765683e05c0SSteen Hegelund value = af->data.u64.value; 766683e05c0SSteen Hegelund break; 767683e05c0SSteen Hegelund case VCAP_FIELD_U72: 768683e05c0SSteen Hegelund value = af->data.u72.value; 769683e05c0SSteen Hegelund break; 770683e05c0SSteen Hegelund case VCAP_FIELD_U112: 771683e05c0SSteen Hegelund value = af->data.u112.value; 772683e05c0SSteen Hegelund break; 773683e05c0SSteen Hegelund case VCAP_FIELD_U128: 774683e05c0SSteen Hegelund value = af->data.u128.value; 775683e05c0SSteen Hegelund break; 776683e05c0SSteen Hegelund } 777683e05c0SSteen Hegelund vcap_iter_init(&iter, act_width, tgt, rf->offset); 778683e05c0SSteen Hegelund vcap_encode_field(cache->actionstream, &iter, rf->width, value); 779683e05c0SSteen Hegelund } 780683e05c0SSteen Hegelund 781683e05c0SSteen Hegelund static void vcap_encode_actionfield_typegroups(struct vcap_rule_internal *ri, 782683e05c0SSteen Hegelund const struct vcap_typegroup *tgt) 783683e05c0SSteen Hegelund { 784683e05c0SSteen Hegelund int sw_width = ri->vctrl->vcaps[ri->admin->vtype].act_width; 785683e05c0SSteen Hegelund struct vcap_cache_data *cache = &ri->admin->cache; 786683e05c0SSteen Hegelund 787683e05c0SSteen Hegelund /* Encode the typegroup bits for the actionstream respecting the subword 788683e05c0SSteen Hegelund * width. 789683e05c0SSteen Hegelund */ 790683e05c0SSteen Hegelund vcap_encode_typegroups(cache->actionstream, sw_width, tgt, false); 791683e05c0SSteen Hegelund } 792683e05c0SSteen Hegelund 793683e05c0SSteen Hegelund static int vcap_encode_rule_actionset(struct vcap_rule_internal *ri) 794683e05c0SSteen Hegelund { 795683e05c0SSteen Hegelund const struct vcap_client_actionfield *caf; 796683e05c0SSteen Hegelund const struct vcap_typegroup *tg_table; 79733e3a273SSteen Hegelund struct vcap_client_actionfield tempaf; 798683e05c0SSteen Hegelund const struct vcap_field *af_table; 799683e05c0SSteen Hegelund int actionset_size; 800683e05c0SSteen Hegelund 801683e05c0SSteen Hegelund /* Get a valid set of actionset fields for the specific actionset */ 802683e05c0SSteen Hegelund af_table = vcap_actionfields(ri->vctrl, ri->admin->vtype, 803683e05c0SSteen Hegelund ri->data.actionset); 804683e05c0SSteen Hegelund if (!af_table) { 805683e05c0SSteen Hegelund pr_err("%s:%d: no fields available for this actionset: %d\n", 806683e05c0SSteen Hegelund __func__, __LINE__, ri->data.actionset); 807683e05c0SSteen Hegelund return -EINVAL; 808683e05c0SSteen Hegelund } 809683e05c0SSteen Hegelund /* Get a valid typegroup for the specific actionset */ 810683e05c0SSteen Hegelund tg_table = vcap_actionfield_typegroup(ri->vctrl, ri->admin->vtype, 811683e05c0SSteen Hegelund ri->data.actionset); 812683e05c0SSteen Hegelund if (!tg_table) { 813683e05c0SSteen Hegelund pr_err("%s:%d: no typegroups available for this actionset: %d\n", 814683e05c0SSteen Hegelund __func__, __LINE__, ri->data.actionset); 815683e05c0SSteen Hegelund return -EINVAL; 816683e05c0SSteen Hegelund } 817683e05c0SSteen Hegelund /* Get a valid actionset size for the specific actionset */ 818683e05c0SSteen Hegelund actionset_size = vcap_actionfield_count(ri->vctrl, ri->admin->vtype, 819683e05c0SSteen Hegelund ri->data.actionset); 820683e05c0SSteen Hegelund if (actionset_size == 0) { 821683e05c0SSteen Hegelund pr_err("%s:%d: zero field count for this actionset: %d\n", 822683e05c0SSteen Hegelund __func__, __LINE__, ri->data.actionset); 823683e05c0SSteen Hegelund return -EINVAL; 824683e05c0SSteen Hegelund } 825683e05c0SSteen Hegelund /* Iterate over the actionfields in the rule 826683e05c0SSteen Hegelund * and encode these bits 827683e05c0SSteen Hegelund */ 828683e05c0SSteen Hegelund if (list_empty(&ri->data.actionfields)) 829683e05c0SSteen Hegelund pr_warn("%s:%d: no actionfields in the rule\n", 830683e05c0SSteen Hegelund __func__, __LINE__); 831683e05c0SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) { 832683e05c0SSteen Hegelund /* Check that the client action exists in the actionset */ 833683e05c0SSteen Hegelund if (caf->ctrl.action >= actionset_size) { 834683e05c0SSteen Hegelund pr_err("%s:%d: action %d is not in vcap\n", 835683e05c0SSteen Hegelund __func__, __LINE__, caf->ctrl.action); 836683e05c0SSteen Hegelund return -EINVAL; 837683e05c0SSteen Hegelund } 83833e3a273SSteen Hegelund vcap_copy_from_client_actionfield(&ri->data, &tempaf, caf); 83933e3a273SSteen Hegelund vcap_encode_actionfield(ri, &tempaf, 84033e3a273SSteen Hegelund &af_table[caf->ctrl.action], tg_table); 841683e05c0SSteen Hegelund } 842683e05c0SSteen Hegelund /* Add typegroup bits to the entry bitstreams */ 843683e05c0SSteen Hegelund vcap_encode_actionfield_typegroups(ri, tg_table); 844683e05c0SSteen Hegelund return 0; 845683e05c0SSteen Hegelund } 846683e05c0SSteen Hegelund 8478e10490bSSteen Hegelund static int vcap_encode_rule(struct vcap_rule_internal *ri) 8488e10490bSSteen Hegelund { 849683e05c0SSteen Hegelund int err; 850683e05c0SSteen Hegelund 851683e05c0SSteen Hegelund err = vcap_encode_rule_keyset(ri); 852683e05c0SSteen Hegelund if (err) 853683e05c0SSteen Hegelund return err; 854683e05c0SSteen Hegelund err = vcap_encode_rule_actionset(ri); 855683e05c0SSteen Hegelund if (err) 856683e05c0SSteen Hegelund return err; 8578e10490bSSteen Hegelund return 0; 8588e10490bSSteen Hegelund } 8598e10490bSSteen Hegelund 860d4134d41SSteen Hegelund int vcap_api_check(struct vcap_control *ctrl) 8618e10490bSSteen Hegelund { 8628e10490bSSteen Hegelund if (!ctrl) { 8638e10490bSSteen Hegelund pr_err("%s:%d: vcap control is missing\n", __func__, __LINE__); 8648e10490bSSteen Hegelund return -EINVAL; 8658e10490bSSteen Hegelund } 8668e10490bSSteen Hegelund if (!ctrl->ops || !ctrl->ops->validate_keyset || 8678e10490bSSteen Hegelund !ctrl->ops->add_default_fields || !ctrl->ops->cache_erase || 8688e10490bSSteen Hegelund !ctrl->ops->cache_write || !ctrl->ops->cache_read || 8698e10490bSSteen Hegelund !ctrl->ops->init || !ctrl->ops->update || !ctrl->ops->move || 87001ef75a2SSteen Hegelund !ctrl->ops->port_info) { 8718e10490bSSteen Hegelund pr_err("%s:%d: client operations are missing\n", 8728e10490bSSteen Hegelund __func__, __LINE__); 8738e10490bSSteen Hegelund return -ENOENT; 8748e10490bSSteen Hegelund } 8758e10490bSSteen Hegelund return 0; 8768e10490bSSteen Hegelund } 8778e10490bSSteen Hegelund 8783a792156SSteen Hegelund void vcap_erase_cache(struct vcap_rule_internal *ri) 8798e10490bSSteen Hegelund { 8808e10490bSSteen Hegelund ri->vctrl->ops->cache_erase(ri->admin); 8818e10490bSSteen Hegelund } 8828e10490bSSteen Hegelund 883c9da1ac1SSteen Hegelund /* Update the keyset for the rule */ 884c9da1ac1SSteen Hegelund int vcap_set_rule_set_keyset(struct vcap_rule *rule, 885c9da1ac1SSteen Hegelund enum vcap_keyfield_set keyset) 886c9da1ac1SSteen Hegelund { 8878e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 8888e10490bSSteen Hegelund const struct vcap_set *kset; 8898e10490bSSteen Hegelund int sw_width; 8908e10490bSSteen Hegelund 8918e10490bSSteen Hegelund kset = vcap_keyfieldset(ri->vctrl, ri->admin->vtype, keyset); 8928e10490bSSteen Hegelund /* Check that the keyset is valid */ 8938e10490bSSteen Hegelund if (!kset) 8948e10490bSSteen Hegelund return -EINVAL; 8958e10490bSSteen Hegelund ri->keyset_sw = kset->sw_per_item; 8968e10490bSSteen Hegelund sw_width = ri->vctrl->vcaps[ri->admin->vtype].sw_width; 8978e10490bSSteen Hegelund ri->keyset_sw_regs = DIV_ROUND_UP(sw_width, 32); 8988e10490bSSteen Hegelund ri->data.keyset = keyset; 899c9da1ac1SSteen Hegelund return 0; 900c9da1ac1SSteen Hegelund } 901c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_set_rule_set_keyset); 902c9da1ac1SSteen Hegelund 903c9da1ac1SSteen Hegelund /* Update the actionset for the rule */ 904c9da1ac1SSteen Hegelund int vcap_set_rule_set_actionset(struct vcap_rule *rule, 905c9da1ac1SSteen Hegelund enum vcap_actionfield_set actionset) 906c9da1ac1SSteen Hegelund { 9078e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 9088e10490bSSteen Hegelund const struct vcap_set *aset; 9098e10490bSSteen Hegelund int act_width; 9108e10490bSSteen Hegelund 9118e10490bSSteen Hegelund aset = vcap_actionfieldset(ri->vctrl, ri->admin->vtype, actionset); 9128e10490bSSteen Hegelund /* Check that the actionset is valid */ 9138e10490bSSteen Hegelund if (!aset) 9148e10490bSSteen Hegelund return -EINVAL; 9158e10490bSSteen Hegelund ri->actionset_sw = aset->sw_per_item; 9168e10490bSSteen Hegelund act_width = ri->vctrl->vcaps[ri->admin->vtype].act_width; 9178e10490bSSteen Hegelund ri->actionset_sw_regs = DIV_ROUND_UP(act_width, 32); 9188e10490bSSteen Hegelund ri->data.actionset = actionset; 919c9da1ac1SSteen Hegelund return 0; 920c9da1ac1SSteen Hegelund } 921c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_set_rule_set_actionset); 922c9da1ac1SSteen Hegelund 923c9da1ac1SSteen Hegelund /* Find a rule with a provided rule id */ 924c9da1ac1SSteen Hegelund static struct vcap_rule_internal *vcap_lookup_rule(struct vcap_control *vctrl, 925c9da1ac1SSteen Hegelund u32 id) 926c9da1ac1SSteen Hegelund { 927c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri; 928c9da1ac1SSteen Hegelund struct vcap_admin *admin; 929c9da1ac1SSteen Hegelund 930c9da1ac1SSteen Hegelund /* Look for the rule id in all vcaps */ 931c9da1ac1SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 932c9da1ac1SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) 933c9da1ac1SSteen Hegelund if (ri->data.id == id) 934c9da1ac1SSteen Hegelund return ri; 935c9da1ac1SSteen Hegelund return NULL; 936c9da1ac1SSteen Hegelund } 937c9da1ac1SSteen Hegelund 938c9da1ac1SSteen Hegelund /* Find a rule id with a provided cookie */ 939c9da1ac1SSteen Hegelund int vcap_lookup_rule_by_cookie(struct vcap_control *vctrl, u64 cookie) 940c9da1ac1SSteen Hegelund { 941c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri; 942c9da1ac1SSteen Hegelund struct vcap_admin *admin; 943c9da1ac1SSteen Hegelund 944c9da1ac1SSteen Hegelund /* Look for the rule id in all vcaps */ 945c9da1ac1SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 946c9da1ac1SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) 947c9da1ac1SSteen Hegelund if (ri->data.cookie == cookie) 948c9da1ac1SSteen Hegelund return ri->data.id; 949c9da1ac1SSteen Hegelund return -ENOENT; 950c9da1ac1SSteen Hegelund } 951c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_lookup_rule_by_cookie); 952c9da1ac1SSteen Hegelund 953814e7693SSteen Hegelund /* Make a copy of the rule, shallow or full */ 954814e7693SSteen Hegelund static struct vcap_rule_internal *vcap_dup_rule(struct vcap_rule_internal *ri, 955814e7693SSteen Hegelund bool full) 9568e10490bSSteen Hegelund { 957814e7693SSteen Hegelund struct vcap_client_actionfield *caf, *newcaf; 958814e7693SSteen Hegelund struct vcap_client_keyfield *ckf, *newckf; 9598e10490bSSteen Hegelund struct vcap_rule_internal *duprule; 9608e10490bSSteen Hegelund 9618e10490bSSteen Hegelund /* Allocate the client part */ 9628e10490bSSteen Hegelund duprule = kzalloc(sizeof(*duprule), GFP_KERNEL); 9638e10490bSSteen Hegelund if (!duprule) 9648e10490bSSteen Hegelund return ERR_PTR(-ENOMEM); 9658e10490bSSteen Hegelund *duprule = *ri; 9668e10490bSSteen Hegelund /* Not inserted in the VCAP */ 9678e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->list); 9688e10490bSSteen Hegelund /* No elements in these lists */ 9698e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->data.keyfields); 9708e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->data.actionfields); 971814e7693SSteen Hegelund 972814e7693SSteen Hegelund /* A full rule copy includes keys and actions */ 973814e7693SSteen Hegelund if (!full) 974814e7693SSteen Hegelund return duprule; 975814e7693SSteen Hegelund 976814e7693SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) { 977814e7693SSteen Hegelund newckf = kzalloc(sizeof(*newckf), GFP_KERNEL); 978814e7693SSteen Hegelund if (!newckf) 979814e7693SSteen Hegelund return ERR_PTR(-ENOMEM); 980814e7693SSteen Hegelund memcpy(newckf, ckf, sizeof(*newckf)); 981814e7693SSteen Hegelund list_add_tail(&newckf->ctrl.list, &duprule->data.keyfields); 982814e7693SSteen Hegelund } 983814e7693SSteen Hegelund 984814e7693SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) { 985814e7693SSteen Hegelund newcaf = kzalloc(sizeof(*newcaf), GFP_KERNEL); 986814e7693SSteen Hegelund if (!newcaf) 987814e7693SSteen Hegelund return ERR_PTR(-ENOMEM); 988814e7693SSteen Hegelund memcpy(newcaf, caf, sizeof(*newcaf)); 989814e7693SSteen Hegelund list_add_tail(&newcaf->ctrl.list, &duprule->data.actionfields); 990814e7693SSteen Hegelund } 991814e7693SSteen Hegelund 9928e10490bSSteen Hegelund return duprule; 9938e10490bSSteen Hegelund } 9948e10490bSSteen Hegelund 995610c32b2SHoratiu Vultur static void vcap_apply_width(u8 *dst, int width, int bytes) 996610c32b2SHoratiu Vultur { 997610c32b2SHoratiu Vultur u8 bmask; 998610c32b2SHoratiu Vultur int idx; 999610c32b2SHoratiu Vultur 1000610c32b2SHoratiu Vultur for (idx = 0; idx < bytes; idx++) { 1001610c32b2SHoratiu Vultur if (width > 0) 1002610c32b2SHoratiu Vultur if (width < 8) 1003610c32b2SHoratiu Vultur bmask = (1 << width) - 1; 1004610c32b2SHoratiu Vultur else 1005610c32b2SHoratiu Vultur bmask = ~0; 1006610c32b2SHoratiu Vultur else 1007610c32b2SHoratiu Vultur bmask = 0; 1008610c32b2SHoratiu Vultur dst[idx] &= bmask; 1009610c32b2SHoratiu Vultur width -= 8; 1010610c32b2SHoratiu Vultur } 1011610c32b2SHoratiu Vultur } 1012610c32b2SHoratiu Vultur 1013610c32b2SHoratiu Vultur static void vcap_copy_from_w32be(u8 *dst, u8 *src, int size, int width) 1014610c32b2SHoratiu Vultur { 1015610c32b2SHoratiu Vultur int idx, ridx, wstart, nidx; 1016610c32b2SHoratiu Vultur int tail_bytes = (((size + 4) >> 2) << 2) - size; 1017610c32b2SHoratiu Vultur 1018610c32b2SHoratiu Vultur for (idx = 0, ridx = size - 1; idx < size; ++idx, --ridx) { 1019610c32b2SHoratiu Vultur wstart = (idx >> 2) << 2; 1020610c32b2SHoratiu Vultur nidx = wstart + 3 - (idx & 0x3); 1021610c32b2SHoratiu Vultur if (nidx >= size) 1022610c32b2SHoratiu Vultur nidx -= tail_bytes; 1023610c32b2SHoratiu Vultur dst[nidx] = src[ridx]; 1024610c32b2SHoratiu Vultur } 1025610c32b2SHoratiu Vultur 1026610c32b2SHoratiu Vultur vcap_apply_width(dst, width, size); 1027610c32b2SHoratiu Vultur } 1028610c32b2SHoratiu Vultur 1029610c32b2SHoratiu Vultur static void vcap_copy_action_bit_field(struct vcap_u1_action *field, u8 *value) 1030610c32b2SHoratiu Vultur { 1031610c32b2SHoratiu Vultur field->value = (*value) & 0x1; 1032610c32b2SHoratiu Vultur } 1033610c32b2SHoratiu Vultur 1034610c32b2SHoratiu Vultur static void vcap_copy_limited_actionfield(u8 *dstvalue, u8 *srcvalue, 1035610c32b2SHoratiu Vultur int width, int bytes) 1036610c32b2SHoratiu Vultur { 1037610c32b2SHoratiu Vultur memcpy(dstvalue, srcvalue, bytes); 1038610c32b2SHoratiu Vultur vcap_apply_width(dstvalue, width, bytes); 1039610c32b2SHoratiu Vultur } 1040610c32b2SHoratiu Vultur 1041610c32b2SHoratiu Vultur static void vcap_copy_to_client_actionfield(struct vcap_rule_internal *ri, 1042610c32b2SHoratiu Vultur struct vcap_client_actionfield *field, 1043610c32b2SHoratiu Vultur u8 *value, u16 width) 1044610c32b2SHoratiu Vultur { 1045610c32b2SHoratiu Vultur int field_size = actionfield_size_table[field->ctrl.type]; 1046610c32b2SHoratiu Vultur 1047610c32b2SHoratiu Vultur if (ri->admin->w32be) { 1048610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1049610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1050610c32b2SHoratiu Vultur vcap_copy_action_bit_field(&field->data.u1, value); 1051610c32b2SHoratiu Vultur break; 1052610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1053610c32b2SHoratiu Vultur vcap_copy_limited_actionfield((u8 *)&field->data.u32.value, 1054610c32b2SHoratiu Vultur value, 1055610c32b2SHoratiu Vultur width, field_size); 1056610c32b2SHoratiu Vultur break; 1057610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1058610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.value, value, 1059610c32b2SHoratiu Vultur field_size, width); 1060610c32b2SHoratiu Vultur break; 1061610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1062610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.value, value, 1063610c32b2SHoratiu Vultur field_size, width); 1064610c32b2SHoratiu Vultur break; 1065610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1066610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.value, value, 1067610c32b2SHoratiu Vultur field_size, width); 1068610c32b2SHoratiu Vultur break; 1069610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1070610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.value, value, 1071610c32b2SHoratiu Vultur field_size, width); 1072610c32b2SHoratiu Vultur break; 1073610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1074610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.value, value, 1075610c32b2SHoratiu Vultur field_size, width); 1076610c32b2SHoratiu Vultur break; 1077610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1078610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.value, value, 1079610c32b2SHoratiu Vultur field_size, width); 1080610c32b2SHoratiu Vultur break; 1081610c32b2SHoratiu Vultur }; 1082610c32b2SHoratiu Vultur } else { 1083610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1084610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1085610c32b2SHoratiu Vultur vcap_copy_action_bit_field(&field->data.u1, value); 1086610c32b2SHoratiu Vultur break; 1087610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1088610c32b2SHoratiu Vultur vcap_copy_limited_actionfield((u8 *)&field->data.u32.value, 1089610c32b2SHoratiu Vultur value, 1090610c32b2SHoratiu Vultur width, field_size); 1091610c32b2SHoratiu Vultur break; 1092610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1093610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u48.value, 1094610c32b2SHoratiu Vultur value, 1095610c32b2SHoratiu Vultur width, field_size); 1096610c32b2SHoratiu Vultur break; 1097610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1098610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u56.value, 1099610c32b2SHoratiu Vultur value, 1100610c32b2SHoratiu Vultur width, field_size); 1101610c32b2SHoratiu Vultur break; 1102610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1103610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u64.value, 1104610c32b2SHoratiu Vultur value, 1105610c32b2SHoratiu Vultur width, field_size); 1106610c32b2SHoratiu Vultur break; 1107610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1108610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u72.value, 1109610c32b2SHoratiu Vultur value, 1110610c32b2SHoratiu Vultur width, field_size); 1111610c32b2SHoratiu Vultur break; 1112610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1113610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u112.value, 1114610c32b2SHoratiu Vultur value, 1115610c32b2SHoratiu Vultur width, field_size); 1116610c32b2SHoratiu Vultur break; 1117610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1118610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u128.value, 1119610c32b2SHoratiu Vultur value, 1120610c32b2SHoratiu Vultur width, field_size); 1121610c32b2SHoratiu Vultur break; 1122610c32b2SHoratiu Vultur }; 1123610c32b2SHoratiu Vultur } 1124610c32b2SHoratiu Vultur } 1125610c32b2SHoratiu Vultur 1126610c32b2SHoratiu Vultur static void vcap_copy_key_bit_field(struct vcap_u1_key *field, 1127610c32b2SHoratiu Vultur u8 *value, u8 *mask) 1128610c32b2SHoratiu Vultur { 1129610c32b2SHoratiu Vultur field->value = (*value) & 0x1; 1130610c32b2SHoratiu Vultur field->mask = (*mask) & 0x1; 1131610c32b2SHoratiu Vultur } 1132610c32b2SHoratiu Vultur 1133610c32b2SHoratiu Vultur static void vcap_copy_limited_keyfield(u8 *dstvalue, u8 *dstmask, 1134610c32b2SHoratiu Vultur u8 *srcvalue, u8 *srcmask, 1135610c32b2SHoratiu Vultur int width, int bytes) 1136610c32b2SHoratiu Vultur { 1137610c32b2SHoratiu Vultur memcpy(dstvalue, srcvalue, bytes); 1138610c32b2SHoratiu Vultur vcap_apply_width(dstvalue, width, bytes); 1139610c32b2SHoratiu Vultur memcpy(dstmask, srcmask, bytes); 1140610c32b2SHoratiu Vultur vcap_apply_width(dstmask, width, bytes); 1141610c32b2SHoratiu Vultur } 1142610c32b2SHoratiu Vultur 1143610c32b2SHoratiu Vultur static void vcap_copy_to_client_keyfield(struct vcap_rule_internal *ri, 1144610c32b2SHoratiu Vultur struct vcap_client_keyfield *field, 1145610c32b2SHoratiu Vultur u8 *value, u8 *mask, u16 width) 1146610c32b2SHoratiu Vultur { 1147610c32b2SHoratiu Vultur int field_size = keyfield_size_table[field->ctrl.type] / 2; 1148610c32b2SHoratiu Vultur 1149610c32b2SHoratiu Vultur if (ri->admin->w32be) { 1150610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1151610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1152610c32b2SHoratiu Vultur vcap_copy_key_bit_field(&field->data.u1, value, mask); 1153610c32b2SHoratiu Vultur break; 1154610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1155610c32b2SHoratiu Vultur vcap_copy_limited_keyfield((u8 *)&field->data.u32.value, 1156610c32b2SHoratiu Vultur (u8 *)&field->data.u32.mask, 1157610c32b2SHoratiu Vultur value, mask, 1158610c32b2SHoratiu Vultur width, field_size); 1159610c32b2SHoratiu Vultur break; 1160610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1161610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.value, value, 1162610c32b2SHoratiu Vultur field_size, width); 1163610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.mask, mask, 1164610c32b2SHoratiu Vultur field_size, width); 1165610c32b2SHoratiu Vultur break; 1166610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1167610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.value, value, 1168610c32b2SHoratiu Vultur field_size, width); 1169610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.mask, mask, 1170610c32b2SHoratiu Vultur field_size, width); 1171610c32b2SHoratiu Vultur break; 1172610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1173610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.value, value, 1174610c32b2SHoratiu Vultur field_size, width); 1175610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.mask, mask, 1176610c32b2SHoratiu Vultur field_size, width); 1177610c32b2SHoratiu Vultur break; 1178610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1179610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.value, value, 1180610c32b2SHoratiu Vultur field_size, width); 1181610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.mask, mask, 1182610c32b2SHoratiu Vultur field_size, width); 1183610c32b2SHoratiu Vultur break; 1184610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1185610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.value, value, 1186610c32b2SHoratiu Vultur field_size, width); 1187610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.mask, mask, 1188610c32b2SHoratiu Vultur field_size, width); 1189610c32b2SHoratiu Vultur break; 1190610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1191610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.value, value, 1192610c32b2SHoratiu Vultur field_size, width); 1193610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.mask, mask, 1194610c32b2SHoratiu Vultur field_size, width); 1195610c32b2SHoratiu Vultur break; 1196610c32b2SHoratiu Vultur }; 1197610c32b2SHoratiu Vultur } else { 1198610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1199610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1200610c32b2SHoratiu Vultur vcap_copy_key_bit_field(&field->data.u1, value, mask); 1201610c32b2SHoratiu Vultur break; 1202610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1203610c32b2SHoratiu Vultur vcap_copy_limited_keyfield((u8 *)&field->data.u32.value, 1204610c32b2SHoratiu Vultur (u8 *)&field->data.u32.mask, 1205610c32b2SHoratiu Vultur value, mask, 1206610c32b2SHoratiu Vultur width, field_size); 1207610c32b2SHoratiu Vultur break; 1208610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1209610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u48.value, 1210610c32b2SHoratiu Vultur field->data.u48.mask, 1211610c32b2SHoratiu Vultur value, mask, 1212610c32b2SHoratiu Vultur width, field_size); 1213610c32b2SHoratiu Vultur break; 1214610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1215610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u56.value, 1216610c32b2SHoratiu Vultur field->data.u56.mask, 1217610c32b2SHoratiu Vultur value, mask, 1218610c32b2SHoratiu Vultur width, field_size); 1219610c32b2SHoratiu Vultur break; 1220610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1221610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u64.value, 1222610c32b2SHoratiu Vultur field->data.u64.mask, 1223610c32b2SHoratiu Vultur value, mask, 1224610c32b2SHoratiu Vultur width, field_size); 1225610c32b2SHoratiu Vultur break; 1226610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1227610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u72.value, 1228610c32b2SHoratiu Vultur field->data.u72.mask, 1229610c32b2SHoratiu Vultur value, mask, 1230610c32b2SHoratiu Vultur width, field_size); 1231610c32b2SHoratiu Vultur break; 1232610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1233610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u112.value, 1234610c32b2SHoratiu Vultur field->data.u112.mask, 1235610c32b2SHoratiu Vultur value, mask, 1236610c32b2SHoratiu Vultur width, field_size); 1237610c32b2SHoratiu Vultur break; 1238610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1239610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u128.value, 1240610c32b2SHoratiu Vultur field->data.u128.mask, 1241610c32b2SHoratiu Vultur value, mask, 1242610c32b2SHoratiu Vultur width, field_size); 1243610c32b2SHoratiu Vultur break; 1244610c32b2SHoratiu Vultur }; 1245610c32b2SHoratiu Vultur } 1246610c32b2SHoratiu Vultur } 1247610c32b2SHoratiu Vultur 1248610c32b2SHoratiu Vultur static void vcap_rule_alloc_keyfield(struct vcap_rule_internal *ri, 1249610c32b2SHoratiu Vultur const struct vcap_field *keyfield, 1250610c32b2SHoratiu Vultur enum vcap_key_field key, 1251610c32b2SHoratiu Vultur u8 *value, u8 *mask) 1252610c32b2SHoratiu Vultur { 1253610c32b2SHoratiu Vultur struct vcap_client_keyfield *field; 1254610c32b2SHoratiu Vultur 1255610c32b2SHoratiu Vultur field = kzalloc(sizeof(*field), GFP_KERNEL); 1256610c32b2SHoratiu Vultur if (!field) 1257610c32b2SHoratiu Vultur return; 1258610c32b2SHoratiu Vultur INIT_LIST_HEAD(&field->ctrl.list); 1259610c32b2SHoratiu Vultur field->ctrl.key = key; 1260610c32b2SHoratiu Vultur field->ctrl.type = keyfield->type; 1261610c32b2SHoratiu Vultur vcap_copy_to_client_keyfield(ri, field, value, mask, keyfield->width); 1262610c32b2SHoratiu Vultur list_add_tail(&field->ctrl.list, &ri->data.keyfields); 1263610c32b2SHoratiu Vultur } 1264610c32b2SHoratiu Vultur 1265610c32b2SHoratiu Vultur /* Read key data from a VCAP address and discover if there is a rule keyset 1266610c32b2SHoratiu Vultur * here 1267610c32b2SHoratiu Vultur */ 1268610c32b2SHoratiu Vultur static bool 1269610c32b2SHoratiu Vultur vcap_verify_actionstream_actionset(struct vcap_control *vctrl, 1270610c32b2SHoratiu Vultur enum vcap_type vt, 1271610c32b2SHoratiu Vultur u32 *actionstream, 1272610c32b2SHoratiu Vultur enum vcap_actionfield_set actionset) 1273610c32b2SHoratiu Vultur { 1274610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1275610c32b2SHoratiu Vultur const struct vcap_field *fields; 1276610c32b2SHoratiu Vultur const struct vcap_set *info; 1277610c32b2SHoratiu Vultur 1278610c32b2SHoratiu Vultur if (vcap_actionfield_count(vctrl, vt, actionset) == 0) 1279610c32b2SHoratiu Vultur return false; 1280610c32b2SHoratiu Vultur 1281610c32b2SHoratiu Vultur info = vcap_actionfieldset(vctrl, vt, actionset); 1282610c32b2SHoratiu Vultur /* Check that the actionset is valid */ 1283610c32b2SHoratiu Vultur if (!info) 1284610c32b2SHoratiu Vultur return false; 1285610c32b2SHoratiu Vultur 1286610c32b2SHoratiu Vultur /* a type_id of value -1 means that there is no type field */ 1287610c32b2SHoratiu Vultur if (info->type_id == (u8)-1) 1288610c32b2SHoratiu Vultur return true; 1289610c32b2SHoratiu Vultur 1290610c32b2SHoratiu Vultur /* Get a valid typegroup for the specific actionset */ 1291610c32b2SHoratiu Vultur tgt = vcap_actionfield_typegroup(vctrl, vt, actionset); 1292610c32b2SHoratiu Vultur if (!tgt) 1293610c32b2SHoratiu Vultur return false; 1294610c32b2SHoratiu Vultur 1295610c32b2SHoratiu Vultur fields = vcap_actionfields(vctrl, vt, actionset); 1296610c32b2SHoratiu Vultur if (!fields) 1297610c32b2SHoratiu Vultur return false; 1298610c32b2SHoratiu Vultur 1299610c32b2SHoratiu Vultur /* Later this will be expanded with a check of the type id */ 1300610c32b2SHoratiu Vultur return true; 1301610c32b2SHoratiu Vultur } 1302610c32b2SHoratiu Vultur 1303610c32b2SHoratiu Vultur /* Find the subword width of the action typegroup that matches the stream data 1304610c32b2SHoratiu Vultur */ 1305610c32b2SHoratiu Vultur static int vcap_find_actionstream_typegroup_sw(struct vcap_control *vctrl, 1306610c32b2SHoratiu Vultur enum vcap_type vt, u32 *stream, 1307610c32b2SHoratiu Vultur int sw_max) 1308610c32b2SHoratiu Vultur { 1309610c32b2SHoratiu Vultur const struct vcap_typegroup **tgt; 1310610c32b2SHoratiu Vultur int sw_idx, res; 1311610c32b2SHoratiu Vultur 1312610c32b2SHoratiu Vultur tgt = vctrl->vcaps[vt].actionfield_set_typegroups; 1313610c32b2SHoratiu Vultur /* Try the longest subword match first */ 1314610c32b2SHoratiu Vultur for (sw_idx = vctrl->vcaps[vt].sw_count; sw_idx >= 0; sw_idx--) { 1315610c32b2SHoratiu Vultur if (!tgt[sw_idx]) 1316610c32b2SHoratiu Vultur continue; 1317610c32b2SHoratiu Vultur res = vcap_verify_typegroups(stream, vctrl->vcaps[vt].act_width, 1318610c32b2SHoratiu Vultur tgt[sw_idx], false, sw_max); 1319610c32b2SHoratiu Vultur if (res == 0) 1320610c32b2SHoratiu Vultur return sw_idx; 1321610c32b2SHoratiu Vultur } 1322610c32b2SHoratiu Vultur return -EINVAL; 1323610c32b2SHoratiu Vultur } 1324610c32b2SHoratiu Vultur 1325610c32b2SHoratiu Vultur /* Verify that the typegroup information, subword count, actionset and type id 1326610c32b2SHoratiu Vultur * are in sync and correct, return the actionset 1327610c32b2SHoratiu Vultur */ 1328610c32b2SHoratiu Vultur static enum vcap_actionfield_set 1329610c32b2SHoratiu Vultur vcap_find_actionstream_actionset(struct vcap_control *vctrl, 1330610c32b2SHoratiu Vultur enum vcap_type vt, 1331610c32b2SHoratiu Vultur u32 *stream, 1332610c32b2SHoratiu Vultur int sw_max) 1333610c32b2SHoratiu Vultur { 1334610c32b2SHoratiu Vultur const struct vcap_set *actionfield_set; 1335610c32b2SHoratiu Vultur int sw_count, idx; 1336610c32b2SHoratiu Vultur bool res; 1337610c32b2SHoratiu Vultur 1338610c32b2SHoratiu Vultur sw_count = vcap_find_actionstream_typegroup_sw(vctrl, vt, stream, 1339610c32b2SHoratiu Vultur sw_max); 1340610c32b2SHoratiu Vultur if (sw_count < 0) 1341610c32b2SHoratiu Vultur return sw_count; 1342610c32b2SHoratiu Vultur 1343610c32b2SHoratiu Vultur actionfield_set = vctrl->vcaps[vt].actionfield_set; 1344610c32b2SHoratiu Vultur for (idx = 0; idx < vctrl->vcaps[vt].actionfield_set_size; ++idx) { 1345610c32b2SHoratiu Vultur if (actionfield_set[idx].sw_per_item != sw_count) 1346610c32b2SHoratiu Vultur continue; 1347610c32b2SHoratiu Vultur 1348610c32b2SHoratiu Vultur res = vcap_verify_actionstream_actionset(vctrl, vt, 1349610c32b2SHoratiu Vultur stream, idx); 1350610c32b2SHoratiu Vultur if (res) 1351610c32b2SHoratiu Vultur return idx; 1352610c32b2SHoratiu Vultur } 1353610c32b2SHoratiu Vultur return -EINVAL; 1354610c32b2SHoratiu Vultur } 1355610c32b2SHoratiu Vultur 1356610c32b2SHoratiu Vultur /* Store action value in an element in a list for the client */ 1357610c32b2SHoratiu Vultur static void vcap_rule_alloc_actionfield(struct vcap_rule_internal *ri, 1358610c32b2SHoratiu Vultur const struct vcap_field *actionfield, 1359610c32b2SHoratiu Vultur enum vcap_action_field action, 1360610c32b2SHoratiu Vultur u8 *value) 1361610c32b2SHoratiu Vultur { 1362610c32b2SHoratiu Vultur struct vcap_client_actionfield *field; 1363610c32b2SHoratiu Vultur 1364610c32b2SHoratiu Vultur field = kzalloc(sizeof(*field), GFP_KERNEL); 1365610c32b2SHoratiu Vultur if (!field) 1366610c32b2SHoratiu Vultur return; 1367610c32b2SHoratiu Vultur INIT_LIST_HEAD(&field->ctrl.list); 1368610c32b2SHoratiu Vultur field->ctrl.action = action; 1369610c32b2SHoratiu Vultur field->ctrl.type = actionfield->type; 1370610c32b2SHoratiu Vultur vcap_copy_to_client_actionfield(ri, field, value, actionfield->width); 1371610c32b2SHoratiu Vultur list_add_tail(&field->ctrl.list, &ri->data.actionfields); 1372610c32b2SHoratiu Vultur } 1373610c32b2SHoratiu Vultur 1374610c32b2SHoratiu Vultur static int vcap_decode_actionset(struct vcap_rule_internal *ri) 1375610c32b2SHoratiu Vultur { 1376610c32b2SHoratiu Vultur struct vcap_control *vctrl = ri->vctrl; 1377610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1378610c32b2SHoratiu Vultur const struct vcap_field *actionfield; 1379610c32b2SHoratiu Vultur enum vcap_actionfield_set actionset; 1380610c32b2SHoratiu Vultur enum vcap_type vt = admin->vtype; 1381610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1382610c32b2SHoratiu Vultur struct vcap_stream_iter iter; 1383610c32b2SHoratiu Vultur int idx, res, actfield_count; 1384610c32b2SHoratiu Vultur u32 *actstream; 1385610c32b2SHoratiu Vultur u8 value[16]; 1386610c32b2SHoratiu Vultur 1387610c32b2SHoratiu Vultur actstream = admin->cache.actionstream; 1388610c32b2SHoratiu Vultur res = vcap_find_actionstream_actionset(vctrl, vt, actstream, 0); 1389610c32b2SHoratiu Vultur if (res < 0) { 1390610c32b2SHoratiu Vultur pr_err("%s:%d: could not find valid actionset: %d\n", 1391610c32b2SHoratiu Vultur __func__, __LINE__, res); 1392610c32b2SHoratiu Vultur return -EINVAL; 1393610c32b2SHoratiu Vultur } 1394610c32b2SHoratiu Vultur actionset = res; 1395610c32b2SHoratiu Vultur actfield_count = vcap_actionfield_count(vctrl, vt, actionset); 1396610c32b2SHoratiu Vultur actionfield = vcap_actionfields(vctrl, vt, actionset); 1397610c32b2SHoratiu Vultur tgt = vcap_actionfield_typegroup(vctrl, vt, actionset); 1398610c32b2SHoratiu Vultur /* Start decoding the stream */ 1399610c32b2SHoratiu Vultur for (idx = 0; idx < actfield_count; ++idx) { 1400610c32b2SHoratiu Vultur if (actionfield[idx].width <= 0) 1401610c32b2SHoratiu Vultur continue; 1402610c32b2SHoratiu Vultur /* Get the action */ 1403610c32b2SHoratiu Vultur memset(value, 0, DIV_ROUND_UP(actionfield[idx].width, 8)); 1404610c32b2SHoratiu Vultur vcap_iter_init(&iter, vctrl->vcaps[vt].act_width, tgt, 1405610c32b2SHoratiu Vultur actionfield[idx].offset); 1406610c32b2SHoratiu Vultur vcap_decode_field(actstream, &iter, actionfield[idx].width, 1407610c32b2SHoratiu Vultur value); 1408610c32b2SHoratiu Vultur /* Skip if no bits are set */ 1409610c32b2SHoratiu Vultur if (vcap_bitarray_zero(actionfield[idx].width, value)) 1410610c32b2SHoratiu Vultur continue; 1411610c32b2SHoratiu Vultur vcap_rule_alloc_actionfield(ri, &actionfield[idx], idx, value); 1412610c32b2SHoratiu Vultur /* Later the action id will also be checked */ 1413610c32b2SHoratiu Vultur } 1414610c32b2SHoratiu Vultur return vcap_set_rule_set_actionset((struct vcap_rule *)ri, actionset); 1415610c32b2SHoratiu Vultur } 1416610c32b2SHoratiu Vultur 1417610c32b2SHoratiu Vultur static int vcap_decode_keyset(struct vcap_rule_internal *ri) 1418610c32b2SHoratiu Vultur { 1419610c32b2SHoratiu Vultur struct vcap_control *vctrl = ri->vctrl; 1420610c32b2SHoratiu Vultur struct vcap_stream_iter kiter, miter; 1421610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1422610c32b2SHoratiu Vultur enum vcap_keyfield_set keysets[10]; 1423610c32b2SHoratiu Vultur const struct vcap_field *keyfield; 1424610c32b2SHoratiu Vultur enum vcap_type vt = admin->vtype; 1425610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1426610c32b2SHoratiu Vultur struct vcap_keyset_list matches; 1427610c32b2SHoratiu Vultur enum vcap_keyfield_set keyset; 1428610c32b2SHoratiu Vultur int idx, res, keyfield_count; 1429610c32b2SHoratiu Vultur u32 *maskstream; 1430610c32b2SHoratiu Vultur u32 *keystream; 1431610c32b2SHoratiu Vultur u8 value[16]; 1432610c32b2SHoratiu Vultur u8 mask[16]; 1433610c32b2SHoratiu Vultur 1434610c32b2SHoratiu Vultur keystream = admin->cache.keystream; 1435610c32b2SHoratiu Vultur maskstream = admin->cache.maskstream; 1436610c32b2SHoratiu Vultur matches.keysets = keysets; 1437610c32b2SHoratiu Vultur matches.cnt = 0; 1438610c32b2SHoratiu Vultur matches.max = ARRAY_SIZE(keysets); 1439610c32b2SHoratiu Vultur res = vcap_find_keystream_keysets(vctrl, vt, keystream, maskstream, 1440610c32b2SHoratiu Vultur false, 0, &matches); 1441610c32b2SHoratiu Vultur if (res < 0) { 1442610c32b2SHoratiu Vultur pr_err("%s:%d: could not find valid keysets: %d\n", 1443610c32b2SHoratiu Vultur __func__, __LINE__, res); 1444610c32b2SHoratiu Vultur return -EINVAL; 1445610c32b2SHoratiu Vultur } 1446610c32b2SHoratiu Vultur keyset = matches.keysets[0]; 1447610c32b2SHoratiu Vultur keyfield_count = vcap_keyfield_count(vctrl, vt, keyset); 1448610c32b2SHoratiu Vultur keyfield = vcap_keyfields(vctrl, vt, keyset); 1449610c32b2SHoratiu Vultur tgt = vcap_keyfield_typegroup(vctrl, vt, keyset); 1450610c32b2SHoratiu Vultur /* Start decoding the streams */ 1451610c32b2SHoratiu Vultur for (idx = 0; idx < keyfield_count; ++idx) { 1452610c32b2SHoratiu Vultur if (keyfield[idx].width <= 0) 1453610c32b2SHoratiu Vultur continue; 1454610c32b2SHoratiu Vultur /* First get the mask */ 1455610c32b2SHoratiu Vultur memset(mask, 0, DIV_ROUND_UP(keyfield[idx].width, 8)); 1456610c32b2SHoratiu Vultur vcap_iter_init(&miter, vctrl->vcaps[vt].sw_width, tgt, 1457610c32b2SHoratiu Vultur keyfield[idx].offset); 1458610c32b2SHoratiu Vultur vcap_decode_field(maskstream, &miter, keyfield[idx].width, 1459610c32b2SHoratiu Vultur mask); 1460610c32b2SHoratiu Vultur /* Skip if no mask bits are set */ 1461610c32b2SHoratiu Vultur if (vcap_bitarray_zero(keyfield[idx].width, mask)) 1462610c32b2SHoratiu Vultur continue; 1463610c32b2SHoratiu Vultur /* Get the key */ 1464610c32b2SHoratiu Vultur memset(value, 0, DIV_ROUND_UP(keyfield[idx].width, 8)); 1465610c32b2SHoratiu Vultur vcap_iter_init(&kiter, vctrl->vcaps[vt].sw_width, tgt, 1466610c32b2SHoratiu Vultur keyfield[idx].offset); 1467610c32b2SHoratiu Vultur vcap_decode_field(keystream, &kiter, keyfield[idx].width, 1468610c32b2SHoratiu Vultur value); 1469610c32b2SHoratiu Vultur vcap_rule_alloc_keyfield(ri, &keyfield[idx], idx, value, mask); 1470610c32b2SHoratiu Vultur } 1471610c32b2SHoratiu Vultur return vcap_set_rule_set_keyset((struct vcap_rule *)ri, keyset); 1472610c32b2SHoratiu Vultur } 1473610c32b2SHoratiu Vultur 1474610c32b2SHoratiu Vultur /* Read VCAP content into the VCAP cache */ 1475610c32b2SHoratiu Vultur static int vcap_read_rule(struct vcap_rule_internal *ri) 1476610c32b2SHoratiu Vultur { 1477610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1478610c32b2SHoratiu Vultur int sw_idx, ent_idx = 0, act_idx = 0; 1479610c32b2SHoratiu Vultur u32 addr = ri->addr; 1480610c32b2SHoratiu Vultur 1481610c32b2SHoratiu Vultur if (!ri->size || !ri->keyset_sw_regs || !ri->actionset_sw_regs) { 1482610c32b2SHoratiu Vultur pr_err("%s:%d: rule is empty\n", __func__, __LINE__); 1483610c32b2SHoratiu Vultur return -EINVAL; 1484610c32b2SHoratiu Vultur } 1485610c32b2SHoratiu Vultur vcap_erase_cache(ri); 1486610c32b2SHoratiu Vultur /* Use the values in the streams to read the VCAP cache */ 1487610c32b2SHoratiu Vultur for (sw_idx = 0; sw_idx < ri->size; sw_idx++, addr++) { 1488610c32b2SHoratiu Vultur ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_READ, 1489610c32b2SHoratiu Vultur VCAP_SEL_ALL, addr); 1490610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1491610c32b2SHoratiu Vultur VCAP_SEL_ENTRY, ent_idx, 1492610c32b2SHoratiu Vultur ri->keyset_sw_regs); 1493610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1494610c32b2SHoratiu Vultur VCAP_SEL_ACTION, act_idx, 1495610c32b2SHoratiu Vultur ri->actionset_sw_regs); 1496610c32b2SHoratiu Vultur if (sw_idx == 0) 1497610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1498610c32b2SHoratiu Vultur VCAP_SEL_COUNTER, 1499610c32b2SHoratiu Vultur ri->counter_id, 0); 1500610c32b2SHoratiu Vultur ent_idx += ri->keyset_sw_regs; 1501610c32b2SHoratiu Vultur act_idx += ri->actionset_sw_regs; 1502610c32b2SHoratiu Vultur } 1503610c32b2SHoratiu Vultur return 0; 1504610c32b2SHoratiu Vultur } 1505610c32b2SHoratiu Vultur 15068e10490bSSteen Hegelund /* Write VCAP cache content to the VCAP HW instance */ 15078e10490bSSteen Hegelund static int vcap_write_rule(struct vcap_rule_internal *ri) 15088e10490bSSteen Hegelund { 15098e10490bSSteen Hegelund struct vcap_admin *admin = ri->admin; 15108e10490bSSteen Hegelund int sw_idx, ent_idx = 0, act_idx = 0; 15118e10490bSSteen Hegelund u32 addr = ri->addr; 15128e10490bSSteen Hegelund 15138e10490bSSteen Hegelund if (!ri->size || !ri->keyset_sw_regs || !ri->actionset_sw_regs) { 15148e10490bSSteen Hegelund pr_err("%s:%d: rule is empty\n", __func__, __LINE__); 15158e10490bSSteen Hegelund return -EINVAL; 15168e10490bSSteen Hegelund } 15178e10490bSSteen Hegelund /* Use the values in the streams to write the VCAP cache */ 15188e10490bSSteen Hegelund for (sw_idx = 0; sw_idx < ri->size; sw_idx++, addr++) { 15198e10490bSSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, 15208e10490bSSteen Hegelund VCAP_SEL_ENTRY, ent_idx, 15218e10490bSSteen Hegelund ri->keyset_sw_regs); 15228e10490bSSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, 15238e10490bSSteen Hegelund VCAP_SEL_ACTION, act_idx, 15248e10490bSSteen Hegelund ri->actionset_sw_regs); 15258e10490bSSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_WRITE, 15268e10490bSSteen Hegelund VCAP_SEL_ALL, addr); 15278e10490bSSteen Hegelund ent_idx += ri->keyset_sw_regs; 15288e10490bSSteen Hegelund act_idx += ri->actionset_sw_regs; 15298e10490bSSteen Hegelund } 15308e10490bSSteen Hegelund return 0; 15318e10490bSSteen Hegelund } 15328e10490bSSteen Hegelund 1533f13230a4SSteen Hegelund static int vcap_write_counter(struct vcap_rule_internal *ri, 1534f13230a4SSteen Hegelund struct vcap_counter *ctr) 1535f13230a4SSteen Hegelund { 1536f13230a4SSteen Hegelund struct vcap_admin *admin = ri->admin; 1537f13230a4SSteen Hegelund 1538f13230a4SSteen Hegelund admin->cache.counter = ctr->value; 1539f13230a4SSteen Hegelund admin->cache.sticky = ctr->sticky; 1540f13230a4SSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, VCAP_SEL_COUNTER, 1541f13230a4SSteen Hegelund ri->counter_id, 0); 1542f13230a4SSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_WRITE, 1543f13230a4SSteen Hegelund VCAP_SEL_COUNTER, ri->addr); 1544f13230a4SSteen Hegelund return 0; 1545f13230a4SSteen Hegelund } 1546f13230a4SSteen Hegelund 15477de1dcadSSteen Hegelund /* Convert a chain id to a VCAP lookup index */ 15487de1dcadSSteen Hegelund int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid) 15497de1dcadSSteen Hegelund { 15507de1dcadSSteen Hegelund int lookup_first = admin->vinst * admin->lookups_per_instance; 15517de1dcadSSteen Hegelund int lookup_last = lookup_first + admin->lookups_per_instance; 15527de1dcadSSteen Hegelund int cid_next = admin->first_cid + VCAP_CID_LOOKUP_SIZE; 15537de1dcadSSteen Hegelund int cid = admin->first_cid; 15547de1dcadSSteen Hegelund int lookup; 15557de1dcadSSteen Hegelund 15567de1dcadSSteen Hegelund for (lookup = lookup_first; lookup < lookup_last; ++lookup, 15577de1dcadSSteen Hegelund cid += VCAP_CID_LOOKUP_SIZE, cid_next += VCAP_CID_LOOKUP_SIZE) 15587de1dcadSSteen Hegelund if (cur_cid >= cid && cur_cid < cid_next) 15597de1dcadSSteen Hegelund return lookup; 15607de1dcadSSteen Hegelund return 0; 15617de1dcadSSteen Hegelund } 15627de1dcadSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_chain_id_to_lookup); 15637de1dcadSSteen Hegelund 1564c9da1ac1SSteen Hegelund /* Lookup a vcap instance using chain id */ 1565c9da1ac1SSteen Hegelund struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid) 1566c9da1ac1SSteen Hegelund { 1567c9da1ac1SSteen Hegelund struct vcap_admin *admin; 1568c9da1ac1SSteen Hegelund 15698e10490bSSteen Hegelund if (vcap_api_check(vctrl)) 15708e10490bSSteen Hegelund return NULL; 15718e10490bSSteen Hegelund 1572c9da1ac1SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 1573c9da1ac1SSteen Hegelund if (cid >= admin->first_cid && cid <= admin->last_cid) 1574c9da1ac1SSteen Hegelund return admin; 1575c9da1ac1SSteen Hegelund } 1576c9da1ac1SSteen Hegelund return NULL; 1577c9da1ac1SSteen Hegelund } 1578c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_find_admin); 1579c9da1ac1SSteen Hegelund 1580784c3067SSteen Hegelund /* Is the next chain id in one of the following lookups 1581784c3067SSteen Hegelund * For now this does not support filters linked to other filters using 1582784c3067SSteen Hegelund * keys and actions. That will be added later. 1583784c3067SSteen Hegelund */ 1584784c3067SSteen Hegelund bool vcap_is_next_lookup(struct vcap_control *vctrl, int src_cid, int dst_cid) 1585392d0ab0SSteen Hegelund { 1586784c3067SSteen Hegelund struct vcap_admin *admin; 1587784c3067SSteen Hegelund int next_cid; 1588392d0ab0SSteen Hegelund 1589392d0ab0SSteen Hegelund if (vcap_api_check(vctrl)) 1590392d0ab0SSteen Hegelund return false; 1591392d0ab0SSteen Hegelund 1592784c3067SSteen Hegelund /* The offset must be at least one lookup, round up */ 1593784c3067SSteen Hegelund next_cid = src_cid + VCAP_CID_LOOKUP_SIZE; 1594784c3067SSteen Hegelund next_cid /= VCAP_CID_LOOKUP_SIZE; 1595784c3067SSteen Hegelund next_cid *= VCAP_CID_LOOKUP_SIZE; 1596784c3067SSteen Hegelund 1597784c3067SSteen Hegelund if (dst_cid < next_cid) 1598784c3067SSteen Hegelund return false; 1599784c3067SSteen Hegelund 1600784c3067SSteen Hegelund admin = vcap_find_admin(vctrl, dst_cid); 1601392d0ab0SSteen Hegelund if (!admin) 1602392d0ab0SSteen Hegelund return false; 1603392d0ab0SSteen Hegelund 1604784c3067SSteen Hegelund return true; 1605392d0ab0SSteen Hegelund } 1606392d0ab0SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_is_next_lookup); 1607392d0ab0SSteen Hegelund 16088e10490bSSteen Hegelund /* Check if there is room for a new rule */ 16098e10490bSSteen Hegelund static int vcap_rule_space(struct vcap_admin *admin, int size) 16108e10490bSSteen Hegelund { 16118e10490bSSteen Hegelund if (admin->last_used_addr - size < admin->first_valid_addr) { 16128e10490bSSteen Hegelund pr_err("%s:%d: No room for rule size: %u, %u\n", 16138e10490bSSteen Hegelund __func__, __LINE__, size, admin->first_valid_addr); 16148e10490bSSteen Hegelund return -ENOSPC; 16158e10490bSSteen Hegelund } 16168e10490bSSteen Hegelund return 0; 16178e10490bSSteen Hegelund } 16188e10490bSSteen Hegelund 16198e10490bSSteen Hegelund /* Add the keyset typefield to the list of rule keyfields */ 16208e10490bSSteen Hegelund static int vcap_add_type_keyfield(struct vcap_rule *rule) 16218e10490bSSteen Hegelund { 16228e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 16238e10490bSSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 16248e10490bSSteen Hegelund enum vcap_type vt = ri->admin->vtype; 16258e10490bSSteen Hegelund const struct vcap_field *fields; 16268e10490bSSteen Hegelund const struct vcap_set *kset; 16278e10490bSSteen Hegelund int ret = -EINVAL; 16288e10490bSSteen Hegelund 16298e10490bSSteen Hegelund kset = vcap_keyfieldset(ri->vctrl, vt, keyset); 16308e10490bSSteen Hegelund if (!kset) 16318e10490bSSteen Hegelund return ret; 16328e10490bSSteen Hegelund if (kset->type_id == (u8)-1) /* No type field is needed */ 16338e10490bSSteen Hegelund return 0; 16348e10490bSSteen Hegelund 16358e10490bSSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 16368e10490bSSteen Hegelund if (!fields) 16378e10490bSSteen Hegelund return -EINVAL; 16388e10490bSSteen Hegelund if (fields[VCAP_KF_TYPE].width > 1) { 16398e10490bSSteen Hegelund ret = vcap_rule_add_key_u32(rule, VCAP_KF_TYPE, 16408e10490bSSteen Hegelund kset->type_id, 0xff); 16418e10490bSSteen Hegelund } else { 16428e10490bSSteen Hegelund if (kset->type_id) 16438e10490bSSteen Hegelund ret = vcap_rule_add_key_bit(rule, VCAP_KF_TYPE, 16448e10490bSSteen Hegelund VCAP_BIT_1); 16458e10490bSSteen Hegelund else 16468e10490bSSteen Hegelund ret = vcap_rule_add_key_bit(rule, VCAP_KF_TYPE, 16478e10490bSSteen Hegelund VCAP_BIT_0); 16488e10490bSSteen Hegelund } 16498e10490bSSteen Hegelund return 0; 16508e10490bSSteen Hegelund } 16518e10490bSSteen Hegelund 1652abc4010dSSteen Hegelund /* Add a keyset to a keyset list */ 1653abc4010dSSteen Hegelund bool vcap_keyset_list_add(struct vcap_keyset_list *keysetlist, 1654abc4010dSSteen Hegelund enum vcap_keyfield_set keyset) 1655abc4010dSSteen Hegelund { 1656abc4010dSSteen Hegelund int idx; 1657abc4010dSSteen Hegelund 1658abc4010dSSteen Hegelund if (keysetlist->cnt < keysetlist->max) { 1659abc4010dSSteen Hegelund /* Avoid duplicates */ 1660abc4010dSSteen Hegelund for (idx = 0; idx < keysetlist->cnt; ++idx) 1661abc4010dSSteen Hegelund if (keysetlist->keysets[idx] == keyset) 1662abc4010dSSteen Hegelund return keysetlist->cnt < keysetlist->max; 1663abc4010dSSteen Hegelund keysetlist->keysets[keysetlist->cnt++] = keyset; 1664abc4010dSSteen Hegelund } 1665abc4010dSSteen Hegelund return keysetlist->cnt < keysetlist->max; 1666abc4010dSSteen Hegelund } 1667abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyset_list_add); 1668abc4010dSSteen Hegelund 1669abc4010dSSteen Hegelund /* map keyset id to a string with the keyset name */ 1670abc4010dSSteen Hegelund const char *vcap_keyset_name(struct vcap_control *vctrl, 1671abc4010dSSteen Hegelund enum vcap_keyfield_set keyset) 1672abc4010dSSteen Hegelund { 1673abc4010dSSteen Hegelund return vctrl->stats->keyfield_set_names[keyset]; 1674abc4010dSSteen Hegelund } 1675abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyset_name); 1676abc4010dSSteen Hegelund 1677abc4010dSSteen Hegelund /* map key field id to a string with the key name */ 1678abc4010dSSteen Hegelund const char *vcap_keyfield_name(struct vcap_control *vctrl, 1679abc4010dSSteen Hegelund enum vcap_key_field key) 1680abc4010dSSteen Hegelund { 1681abc4010dSSteen Hegelund return vctrl->stats->keyfield_names[key]; 1682abc4010dSSteen Hegelund } 1683abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyfield_name); 1684abc4010dSSteen Hegelund 16853a792156SSteen Hegelund /* map actionset id to a string with the actionset name */ 16863a792156SSteen Hegelund const char *vcap_actionset_name(struct vcap_control *vctrl, 16873a792156SSteen Hegelund enum vcap_actionfield_set actionset) 16883a792156SSteen Hegelund { 16893a792156SSteen Hegelund return vctrl->stats->actionfield_set_names[actionset]; 16903a792156SSteen Hegelund } 16913a792156SSteen Hegelund 1692242df4f7SSteen Hegelund /* map action field id to a string with the action name */ 16933a792156SSteen Hegelund const char *vcap_actionfield_name(struct vcap_control *vctrl, 1694242df4f7SSteen Hegelund enum vcap_action_field action) 1695242df4f7SSteen Hegelund { 1696242df4f7SSteen Hegelund return vctrl->stats->actionfield_names[action]; 1697242df4f7SSteen Hegelund } 1698242df4f7SSteen Hegelund 1699abc4010dSSteen Hegelund /* Return the keyfield that matches a key in a keyset */ 1700abc4010dSSteen Hegelund static const struct vcap_field * 1701abc4010dSSteen Hegelund vcap_find_keyset_keyfield(struct vcap_control *vctrl, 1702abc4010dSSteen Hegelund enum vcap_type vtype, 1703abc4010dSSteen Hegelund enum vcap_keyfield_set keyset, 1704abc4010dSSteen Hegelund enum vcap_key_field key) 1705abc4010dSSteen Hegelund { 1706abc4010dSSteen Hegelund const struct vcap_field *fields; 1707abc4010dSSteen Hegelund int idx, count; 1708abc4010dSSteen Hegelund 1709abc4010dSSteen Hegelund fields = vcap_keyfields(vctrl, vtype, keyset); 1710abc4010dSSteen Hegelund if (!fields) 1711abc4010dSSteen Hegelund return NULL; 1712abc4010dSSteen Hegelund 1713abc4010dSSteen Hegelund /* Iterate the keyfields of the keyset */ 1714abc4010dSSteen Hegelund count = vcap_keyfield_count(vctrl, vtype, keyset); 1715abc4010dSSteen Hegelund for (idx = 0; idx < count; ++idx) { 1716abc4010dSSteen Hegelund if (fields[idx].width == 0) 1717abc4010dSSteen Hegelund continue; 1718abc4010dSSteen Hegelund 1719abc4010dSSteen Hegelund if (key == idx) 1720abc4010dSSteen Hegelund return &fields[idx]; 1721abc4010dSSteen Hegelund } 1722abc4010dSSteen Hegelund 1723abc4010dSSteen Hegelund return NULL; 1724abc4010dSSteen Hegelund } 1725abc4010dSSteen Hegelund 1726abc4010dSSteen Hegelund /* Match a list of keys against the keysets available in a vcap type */ 1727465a38a2SSteen Hegelund static bool _vcap_rule_find_keysets(struct vcap_rule_internal *ri, 1728abc4010dSSteen Hegelund struct vcap_keyset_list *matches) 1729abc4010dSSteen Hegelund { 1730abc4010dSSteen Hegelund const struct vcap_client_keyfield *ckf; 1731abc4010dSSteen Hegelund int keyset, found, keycount, map_size; 1732abc4010dSSteen Hegelund const struct vcap_field **map; 1733abc4010dSSteen Hegelund enum vcap_type vtype; 1734abc4010dSSteen Hegelund 1735abc4010dSSteen Hegelund vtype = ri->admin->vtype; 1736abc4010dSSteen Hegelund map = ri->vctrl->vcaps[vtype].keyfield_set_map; 1737abc4010dSSteen Hegelund map_size = ri->vctrl->vcaps[vtype].keyfield_set_size; 1738abc4010dSSteen Hegelund 1739abc4010dSSteen Hegelund /* Get a count of the keyfields we want to match */ 1740abc4010dSSteen Hegelund keycount = 0; 1741abc4010dSSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 1742abc4010dSSteen Hegelund ++keycount; 1743abc4010dSSteen Hegelund 1744abc4010dSSteen Hegelund matches->cnt = 0; 1745abc4010dSSteen Hegelund /* Iterate the keysets of the VCAP */ 1746abc4010dSSteen Hegelund for (keyset = 0; keyset < map_size; ++keyset) { 1747abc4010dSSteen Hegelund if (!map[keyset]) 1748abc4010dSSteen Hegelund continue; 1749abc4010dSSteen Hegelund 1750abc4010dSSteen Hegelund /* Iterate the keys in the rule */ 1751abc4010dSSteen Hegelund found = 0; 1752abc4010dSSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 1753abc4010dSSteen Hegelund if (vcap_find_keyset_keyfield(ri->vctrl, vtype, 1754abc4010dSSteen Hegelund keyset, ckf->ctrl.key)) 1755abc4010dSSteen Hegelund ++found; 1756abc4010dSSteen Hegelund 1757abc4010dSSteen Hegelund /* Save the keyset if all keyfields were found */ 1758abc4010dSSteen Hegelund if (found == keycount) 1759abc4010dSSteen Hegelund if (!vcap_keyset_list_add(matches, keyset)) 1760abc4010dSSteen Hegelund /* bail out when the quota is filled */ 1761abc4010dSSteen Hegelund break; 1762abc4010dSSteen Hegelund } 1763abc4010dSSteen Hegelund 1764abc4010dSSteen Hegelund return matches->cnt > 0; 1765abc4010dSSteen Hegelund } 1766abc4010dSSteen Hegelund 1767465a38a2SSteen Hegelund /* Match a list of keys against the keysets available in a vcap type */ 1768465a38a2SSteen Hegelund bool vcap_rule_find_keysets(struct vcap_rule *rule, 1769465a38a2SSteen Hegelund struct vcap_keyset_list *matches) 1770465a38a2SSteen Hegelund { 1771465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 1772465a38a2SSteen Hegelund 1773465a38a2SSteen Hegelund return _vcap_rule_find_keysets(ri, matches); 1774465a38a2SSteen Hegelund } 1775465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_find_keysets); 1776465a38a2SSteen Hegelund 1777c9da1ac1SSteen Hegelund /* Validate a rule with respect to available port keys */ 1778c9da1ac1SSteen Hegelund int vcap_val_rule(struct vcap_rule *rule, u16 l3_proto) 1779c9da1ac1SSteen Hegelund { 1780c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 1781abc4010dSSteen Hegelund struct vcap_keyset_list matches = {}; 17828e10490bSSteen Hegelund enum vcap_keyfield_set keysets[10]; 17838e10490bSSteen Hegelund int ret; 1784c9da1ac1SSteen Hegelund 17858e10490bSSteen Hegelund ret = vcap_api_check(ri->vctrl); 17868e10490bSSteen Hegelund if (ret) 17878e10490bSSteen Hegelund return ret; 1788c9da1ac1SSteen Hegelund if (!ri->admin) { 1789c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_ADMIN; 1790c9da1ac1SSteen Hegelund return -EINVAL; 1791c9da1ac1SSteen Hegelund } 1792c9da1ac1SSteen Hegelund if (!ri->ndev) { 1793c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_NETDEV; 1794c9da1ac1SSteen Hegelund return -EINVAL; 1795c9da1ac1SSteen Hegelund } 1796abc4010dSSteen Hegelund 1797abc4010dSSteen Hegelund matches.keysets = keysets; 1798abc4010dSSteen Hegelund matches.max = ARRAY_SIZE(keysets); 1799c9da1ac1SSteen Hegelund if (ri->data.keyset == VCAP_KFS_NO_VALUE) { 1800abc4010dSSteen Hegelund /* Iterate over rule keyfields and select keysets that fits */ 1801465a38a2SSteen Hegelund if (!_vcap_rule_find_keysets(ri, &matches)) { 1802c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_KEYSET_MATCH; 1803c9da1ac1SSteen Hegelund return -EINVAL; 1804c9da1ac1SSteen Hegelund } 1805abc4010dSSteen Hegelund } else { 18068e10490bSSteen Hegelund /* prepare for keyset validation */ 18078e10490bSSteen Hegelund keysets[0] = ri->data.keyset; 1808abc4010dSSteen Hegelund matches.cnt = 1; 1809abc4010dSSteen Hegelund } 1810abc4010dSSteen Hegelund 18118e10490bSSteen Hegelund /* Pick a keyset that is supported in the port lookups */ 1812abc4010dSSteen Hegelund ret = ri->vctrl->ops->validate_keyset(ri->ndev, ri->admin, rule, 1813abc4010dSSteen Hegelund &matches, l3_proto); 18148e10490bSSteen Hegelund if (ret < 0) { 18158e10490bSSteen Hegelund pr_err("%s:%d: keyset validation failed: %d\n", 18168e10490bSSteen Hegelund __func__, __LINE__, ret); 18178e10490bSSteen Hegelund ri->data.exterr = VCAP_ERR_NO_PORT_KEYSET_MATCH; 18188e10490bSSteen Hegelund return ret; 18198e10490bSSteen Hegelund } 1820abc4010dSSteen Hegelund /* use the keyset that is supported in the port lookups */ 1821abc4010dSSteen Hegelund ret = vcap_set_rule_set_keyset(rule, ret); 1822abc4010dSSteen Hegelund if (ret < 0) { 1823abc4010dSSteen Hegelund pr_err("%s:%d: keyset was not updated: %d\n", 1824abc4010dSSteen Hegelund __func__, __LINE__, ret); 1825abc4010dSSteen Hegelund return ret; 1826abc4010dSSteen Hegelund } 1827c9da1ac1SSteen Hegelund if (ri->data.actionset == VCAP_AFS_NO_VALUE) { 1828abc4010dSSteen Hegelund /* Later also actionsets will be matched against actions in 1829abc4010dSSteen Hegelund * the rule, and the type will be set accordingly 1830abc4010dSSteen Hegelund */ 1831c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_ACTIONSET_MATCH; 1832c9da1ac1SSteen Hegelund return -EINVAL; 1833c9da1ac1SSteen Hegelund } 18348e10490bSSteen Hegelund vcap_add_type_keyfield(rule); 18358e10490bSSteen Hegelund /* Add default fields to this rule */ 18368e10490bSSteen Hegelund ri->vctrl->ops->add_default_fields(ri->ndev, ri->admin, rule); 18378e10490bSSteen Hegelund 18388e10490bSSteen Hegelund /* Rule size is the maximum of the entry and action subword count */ 18398e10490bSSteen Hegelund ri->size = max(ri->keyset_sw, ri->actionset_sw); 18408e10490bSSteen Hegelund 18418e10490bSSteen Hegelund /* Finally check if there is room for the rule in the VCAP */ 18428e10490bSSteen Hegelund return vcap_rule_space(ri->admin, ri->size); 1843c9da1ac1SSteen Hegelund } 1844c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_val_rule); 1845c9da1ac1SSteen Hegelund 1846990e4839SSteen Hegelund /* Entries are sorted with increasing values of sort_key. 1847990e4839SSteen Hegelund * I.e. Lowest numerical sort_key is first in list. 1848990e4839SSteen Hegelund * In order to locate largest keys first in list we negate the key size with 1849990e4839SSteen Hegelund * (max_size - size). 1850990e4839SSteen Hegelund */ 1851990e4839SSteen Hegelund static u32 vcap_sort_key(u32 max_size, u32 size, u8 user, u16 prio) 1852990e4839SSteen Hegelund { 1853990e4839SSteen Hegelund return ((max_size - size) << 24) | (user << 16) | prio; 1854990e4839SSteen Hegelund } 1855990e4839SSteen Hegelund 18568e10490bSSteen Hegelund /* calculate the address of the next rule after this (lower address and prio) */ 18578e10490bSSteen Hegelund static u32 vcap_next_rule_addr(u32 addr, struct vcap_rule_internal *ri) 18588e10490bSSteen Hegelund { 18598e10490bSSteen Hegelund return ((addr - ri->size) / ri->size) * ri->size; 18608e10490bSSteen Hegelund } 18618e10490bSSteen Hegelund 1862c9da1ac1SSteen Hegelund /* Assign a unique rule id and autogenerate one if id == 0 */ 1863c9da1ac1SSteen Hegelund static u32 vcap_set_rule_id(struct vcap_rule_internal *ri) 1864c9da1ac1SSteen Hegelund { 1865c9da1ac1SSteen Hegelund if (ri->data.id != 0) 1866c9da1ac1SSteen Hegelund return ri->data.id; 1867c9da1ac1SSteen Hegelund 1868c1d8e3fbSHoratiu Vultur for (u32 next_id = 1; next_id < ~0; ++next_id) { 1869c9da1ac1SSteen Hegelund if (!vcap_lookup_rule(ri->vctrl, next_id)) { 1870c9da1ac1SSteen Hegelund ri->data.id = next_id; 1871c9da1ac1SSteen Hegelund break; 1872c9da1ac1SSteen Hegelund } 1873c9da1ac1SSteen Hegelund } 1874c9da1ac1SSteen Hegelund return ri->data.id; 1875c9da1ac1SSteen Hegelund } 1876c9da1ac1SSteen Hegelund 18778e10490bSSteen Hegelund static int vcap_insert_rule(struct vcap_rule_internal *ri, 18788e10490bSSteen Hegelund struct vcap_rule_move *move) 18798e10490bSSteen Hegelund { 1880990e4839SSteen Hegelund int sw_count = ri->vctrl->vcaps[ri->admin->vtype].sw_count; 1881990e4839SSteen Hegelund struct vcap_rule_internal *duprule, *iter, *elem = NULL; 18828e10490bSSteen Hegelund struct vcap_admin *admin = ri->admin; 1883990e4839SSteen Hegelund u32 addr; 18848e10490bSSteen Hegelund 1885990e4839SSteen Hegelund ri->sort_key = vcap_sort_key(sw_count, ri->size, ri->data.user, 1886990e4839SSteen Hegelund ri->data.priority); 1887990e4839SSteen Hegelund 1888990e4839SSteen Hegelund /* Insert the new rule in the list of rule based on the sort key 1889990e4839SSteen Hegelund * If the rule needs to be inserted between existing rules then move 1890990e4839SSteen Hegelund * these rules to make room for the new rule and update their start 1891990e4839SSteen Hegelund * address. 1892990e4839SSteen Hegelund */ 1893990e4839SSteen Hegelund list_for_each_entry(iter, &admin->rules, list) { 1894990e4839SSteen Hegelund if (ri->sort_key < iter->sort_key) { 1895990e4839SSteen Hegelund elem = iter; 1896990e4839SSteen Hegelund break; 1897990e4839SSteen Hegelund } 1898990e4839SSteen Hegelund } 1899990e4839SSteen Hegelund 1900990e4839SSteen Hegelund if (!elem) { 19018e10490bSSteen Hegelund ri->addr = vcap_next_rule_addr(admin->last_used_addr, ri); 19028e10490bSSteen Hegelund admin->last_used_addr = ri->addr; 1903990e4839SSteen Hegelund 1904814e7693SSteen Hegelund /* Add a copy of the rule to the VCAP list */ 1905814e7693SSteen Hegelund duprule = vcap_dup_rule(ri, ri->state == VCAP_RS_DISABLED); 19068e10490bSSteen Hegelund if (IS_ERR(duprule)) 19078e10490bSSteen Hegelund return PTR_ERR(duprule); 1908990e4839SSteen Hegelund 19098e10490bSSteen Hegelund list_add_tail(&duprule->list, &admin->rules); 19108e10490bSSteen Hegelund return 0; 19118e10490bSSteen Hegelund } 19128e10490bSSteen Hegelund 1913990e4839SSteen Hegelund /* Reuse the space of the current rule */ 1914990e4839SSteen Hegelund addr = elem->addr + elem->size; 1915990e4839SSteen Hegelund ri->addr = vcap_next_rule_addr(addr, ri); 1916990e4839SSteen Hegelund addr = ri->addr; 1917990e4839SSteen Hegelund 1918814e7693SSteen Hegelund /* Add a copy of the rule to the VCAP list */ 1919814e7693SSteen Hegelund duprule = vcap_dup_rule(ri, ri->state == VCAP_RS_DISABLED); 1920990e4839SSteen Hegelund if (IS_ERR(duprule)) 1921990e4839SSteen Hegelund return PTR_ERR(duprule); 1922990e4839SSteen Hegelund 1923990e4839SSteen Hegelund /* Add before the current entry */ 1924990e4839SSteen Hegelund list_add_tail(&duprule->list, &elem->list); 1925990e4839SSteen Hegelund 1926990e4839SSteen Hegelund /* Update the current rule */ 1927990e4839SSteen Hegelund elem->addr = vcap_next_rule_addr(addr, elem); 1928990e4839SSteen Hegelund addr = elem->addr; 1929990e4839SSteen Hegelund 1930990e4839SSteen Hegelund /* Update the address in the remaining rules in the list */ 1931990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) { 1932990e4839SSteen Hegelund elem->addr = vcap_next_rule_addr(addr, elem); 1933990e4839SSteen Hegelund addr = elem->addr; 1934990e4839SSteen Hegelund } 1935990e4839SSteen Hegelund 1936990e4839SSteen Hegelund /* Update the move info */ 1937990e4839SSteen Hegelund move->addr = admin->last_used_addr; 1938990e4839SSteen Hegelund move->count = ri->addr - addr; 1939990e4839SSteen Hegelund move->offset = admin->last_used_addr - addr; 1940990e4839SSteen Hegelund admin->last_used_addr = addr; 1941990e4839SSteen Hegelund return 0; 1942990e4839SSteen Hegelund } 1943990e4839SSteen Hegelund 19448e10490bSSteen Hegelund static void vcap_move_rules(struct vcap_rule_internal *ri, 19458e10490bSSteen Hegelund struct vcap_rule_move *move) 19468e10490bSSteen Hegelund { 19478e10490bSSteen Hegelund ri->vctrl->ops->move(ri->ndev, ri->admin, move->addr, 19488e10490bSSteen Hegelund move->offset, move->count); 19498e10490bSSteen Hegelund } 19508e10490bSSteen Hegelund 1951cfd9e7b7SSteen Hegelund /* Check if the chain is already used to enable a VCAP lookup for this port */ 1952cfd9e7b7SSteen Hegelund static bool vcap_is_chain_used(struct vcap_control *vctrl, 1953cfd9e7b7SSteen Hegelund struct net_device *ndev, int src_cid) 1954cfd9e7b7SSteen Hegelund { 1955cfd9e7b7SSteen Hegelund struct vcap_enabled_port *eport; 1956cfd9e7b7SSteen Hegelund struct vcap_admin *admin; 1957cfd9e7b7SSteen Hegelund 1958cfd9e7b7SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 1959cfd9e7b7SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) 1960cfd9e7b7SSteen Hegelund if (eport->src_cid == src_cid && eport->ndev == ndev) 1961cfd9e7b7SSteen Hegelund return true; 1962cfd9e7b7SSteen Hegelund 1963cfd9e7b7SSteen Hegelund return false; 1964cfd9e7b7SSteen Hegelund } 1965cfd9e7b7SSteen Hegelund 1966814e7693SSteen Hegelund /* Fetch the next chain in the enabled list for the port */ 1967814e7693SSteen Hegelund static int vcap_get_next_chain(struct vcap_control *vctrl, 1968814e7693SSteen Hegelund struct net_device *ndev, 1969814e7693SSteen Hegelund int dst_cid) 1970814e7693SSteen Hegelund { 1971814e7693SSteen Hegelund struct vcap_enabled_port *eport; 1972814e7693SSteen Hegelund struct vcap_admin *admin; 1973814e7693SSteen Hegelund 1974814e7693SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 1975814e7693SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) { 1976814e7693SSteen Hegelund if (eport->ndev != ndev) 1977814e7693SSteen Hegelund continue; 1978814e7693SSteen Hegelund if (eport->src_cid == dst_cid) 1979814e7693SSteen Hegelund return eport->dst_cid; 1980814e7693SSteen Hegelund } 1981814e7693SSteen Hegelund } 1982814e7693SSteen Hegelund 1983814e7693SSteen Hegelund return 0; 1984814e7693SSteen Hegelund } 1985814e7693SSteen Hegelund 1986814e7693SSteen Hegelund static bool vcap_path_exist(struct vcap_control *vctrl, struct net_device *ndev, 1987814e7693SSteen Hegelund int dst_cid) 1988814e7693SSteen Hegelund { 1989814e7693SSteen Hegelund struct vcap_enabled_port *eport, *elem; 1990814e7693SSteen Hegelund struct vcap_admin *admin; 1991814e7693SSteen Hegelund int tmp; 1992814e7693SSteen Hegelund 1993*18a15c76SSteen Hegelund if (dst_cid == 0) /* Chain zero is always available */ 1994*18a15c76SSteen Hegelund return true; 1995*18a15c76SSteen Hegelund 1996814e7693SSteen Hegelund /* Find first entry that starts from chain 0*/ 1997814e7693SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 1998814e7693SSteen Hegelund list_for_each_entry(elem, &admin->enabled, list) { 1999814e7693SSteen Hegelund if (elem->src_cid == 0 && elem->ndev == ndev) { 2000814e7693SSteen Hegelund eport = elem; 2001814e7693SSteen Hegelund break; 2002814e7693SSteen Hegelund } 2003814e7693SSteen Hegelund } 2004814e7693SSteen Hegelund if (eport) 2005814e7693SSteen Hegelund break; 2006814e7693SSteen Hegelund } 2007814e7693SSteen Hegelund 2008814e7693SSteen Hegelund if (!eport) 2009814e7693SSteen Hegelund return false; 2010814e7693SSteen Hegelund 2011814e7693SSteen Hegelund tmp = eport->dst_cid; 2012814e7693SSteen Hegelund while (tmp != dst_cid && tmp != 0) 2013814e7693SSteen Hegelund tmp = vcap_get_next_chain(vctrl, ndev, tmp); 2014814e7693SSteen Hegelund 2015814e7693SSteen Hegelund return !!tmp; 2016814e7693SSteen Hegelund } 2017814e7693SSteen Hegelund 2018814e7693SSteen Hegelund /* Internal clients can always store their rules in HW 2019814e7693SSteen Hegelund * External clients can store their rules if the chain is enabled all 2020814e7693SSteen Hegelund * the way from chain 0, otherwise the rule will be cached until 2021814e7693SSteen Hegelund * the chain is enabled. 2022814e7693SSteen Hegelund */ 2023814e7693SSteen Hegelund static void vcap_rule_set_state(struct vcap_rule_internal *ri) 2024814e7693SSteen Hegelund { 2025814e7693SSteen Hegelund if (ri->data.user <= VCAP_USER_QOS) 2026814e7693SSteen Hegelund ri->state = VCAP_RS_PERMANENT; 2027814e7693SSteen Hegelund else if (vcap_path_exist(ri->vctrl, ri->ndev, ri->data.vcap_chain_id)) 2028814e7693SSteen Hegelund ri->state = VCAP_RS_ENABLED; 2029814e7693SSteen Hegelund else 2030814e7693SSteen Hegelund ri->state = VCAP_RS_DISABLED; 2031814e7693SSteen Hegelund } 2032814e7693SSteen Hegelund 2033c9da1ac1SSteen Hegelund /* Encode and write a validated rule to the VCAP */ 2034c9da1ac1SSteen Hegelund int vcap_add_rule(struct vcap_rule *rule) 2035c9da1ac1SSteen Hegelund { 20368e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 20378e10490bSSteen Hegelund struct vcap_rule_move move = {0}; 203895fa7414SSteen Hegelund struct vcap_counter ctr = {0}; 20398e10490bSSteen Hegelund int ret; 20408e10490bSSteen Hegelund 20418e10490bSSteen Hegelund ret = vcap_api_check(ri->vctrl); 20428e10490bSSteen Hegelund if (ret) 20438e10490bSSteen Hegelund return ret; 20448e10490bSSteen Hegelund /* Insert the new rule in the list of vcap rules */ 204571c9de99SSteen Hegelund mutex_lock(&ri->admin->lock); 2046814e7693SSteen Hegelund 2047814e7693SSteen Hegelund vcap_rule_set_state(ri); 20488e10490bSSteen Hegelund ret = vcap_insert_rule(ri, &move); 20498e10490bSSteen Hegelund if (ret < 0) { 20508e10490bSSteen Hegelund pr_err("%s:%d: could not insert rule in vcap list: %d\n", 20518e10490bSSteen Hegelund __func__, __LINE__, ret); 20528e10490bSSteen Hegelund goto out; 20538e10490bSSteen Hegelund } 20548e10490bSSteen Hegelund if (move.count > 0) 20558e10490bSSteen Hegelund vcap_move_rules(ri, &move); 2056814e7693SSteen Hegelund 2057814e7693SSteen Hegelund if (ri->state == VCAP_RS_DISABLED) { 2058814e7693SSteen Hegelund /* Erase the rule area */ 2059814e7693SSteen Hegelund ri->vctrl->ops->init(ri->ndev, ri->admin, ri->addr, ri->size); 2060814e7693SSteen Hegelund goto out; 2061814e7693SSteen Hegelund } 2062814e7693SSteen Hegelund 20636573f71aSSteen Hegelund vcap_erase_cache(ri); 20648e10490bSSteen Hegelund ret = vcap_encode_rule(ri); 20658e10490bSSteen Hegelund if (ret) { 20668e10490bSSteen Hegelund pr_err("%s:%d: rule encoding error: %d\n", __func__, __LINE__, ret); 20678e10490bSSteen Hegelund goto out; 20688e10490bSSteen Hegelund } 20698e10490bSSteen Hegelund 20708e10490bSSteen Hegelund ret = vcap_write_rule(ri); 207195fa7414SSteen Hegelund if (ret) { 20728e10490bSSteen Hegelund pr_err("%s:%d: rule write error: %d\n", __func__, __LINE__, ret); 207395fa7414SSteen Hegelund goto out; 207495fa7414SSteen Hegelund } 207595fa7414SSteen Hegelund /* Set the counter to zero */ 207695fa7414SSteen Hegelund ret = vcap_write_counter(ri, &ctr); 20778e10490bSSteen Hegelund out: 207871c9de99SSteen Hegelund mutex_unlock(&ri->admin->lock); 20798e10490bSSteen Hegelund return ret; 2080c9da1ac1SSteen Hegelund } 2081c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_add_rule); 2082c9da1ac1SSteen Hegelund 2083c9da1ac1SSteen Hegelund /* Allocate a new rule with the provided arguments */ 2084c9da1ac1SSteen Hegelund struct vcap_rule *vcap_alloc_rule(struct vcap_control *vctrl, 2085c9da1ac1SSteen Hegelund struct net_device *ndev, int vcap_chain_id, 2086c9da1ac1SSteen Hegelund enum vcap_user user, u16 priority, 2087c9da1ac1SSteen Hegelund u32 id) 2088c9da1ac1SSteen Hegelund { 2089c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri; 2090c9da1ac1SSteen Hegelund struct vcap_admin *admin; 2091990e4839SSteen Hegelund int err, maxsize; 2092c9da1ac1SSteen Hegelund 2093990e4839SSteen Hegelund err = vcap_api_check(vctrl); 2094990e4839SSteen Hegelund if (err) 2095990e4839SSteen Hegelund return ERR_PTR(err); 2096c9da1ac1SSteen Hegelund if (!ndev) 2097c9da1ac1SSteen Hegelund return ERR_PTR(-ENODEV); 2098c9da1ac1SSteen Hegelund /* Get the VCAP instance */ 2099c9da1ac1SSteen Hegelund admin = vcap_find_admin(vctrl, vcap_chain_id); 2100c9da1ac1SSteen Hegelund if (!admin) 2101c9da1ac1SSteen Hegelund return ERR_PTR(-ENOENT); 21028e10490bSSteen Hegelund /* Sanity check that this VCAP is supported on this platform */ 21038e10490bSSteen Hegelund if (vctrl->vcaps[admin->vtype].rows == 0) 21048e10490bSSteen Hegelund return ERR_PTR(-EINVAL); 21058e10490bSSteen Hegelund /* Check if a rule with this id already exists */ 21068e10490bSSteen Hegelund if (vcap_lookup_rule(vctrl, id)) 21078e10490bSSteen Hegelund return ERR_PTR(-EEXIST); 21088e10490bSSteen Hegelund /* Check if there is room for the rule in the block(s) of the VCAP */ 21098e10490bSSteen Hegelund maxsize = vctrl->vcaps[admin->vtype].sw_count; /* worst case rule size */ 21108e10490bSSteen Hegelund if (vcap_rule_space(admin, maxsize)) 21118e10490bSSteen Hegelund return ERR_PTR(-ENOSPC); 2112c9da1ac1SSteen Hegelund /* Create a container for the rule and return it */ 2113c9da1ac1SSteen Hegelund ri = kzalloc(sizeof(*ri), GFP_KERNEL); 2114c9da1ac1SSteen Hegelund if (!ri) 2115c9da1ac1SSteen Hegelund return ERR_PTR(-ENOMEM); 2116c9da1ac1SSteen Hegelund ri->data.vcap_chain_id = vcap_chain_id; 2117c9da1ac1SSteen Hegelund ri->data.user = user; 2118c9da1ac1SSteen Hegelund ri->data.priority = priority; 2119c9da1ac1SSteen Hegelund ri->data.id = id; 2120c9da1ac1SSteen Hegelund ri->data.keyset = VCAP_KFS_NO_VALUE; 2121c9da1ac1SSteen Hegelund ri->data.actionset = VCAP_AFS_NO_VALUE; 2122c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->list); 2123c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->data.keyfields); 2124c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->data.actionfields); 2125c9da1ac1SSteen Hegelund ri->ndev = ndev; 2126c9da1ac1SSteen Hegelund ri->admin = admin; /* refer to the vcap instance */ 2127c9da1ac1SSteen Hegelund ri->vctrl = vctrl; /* refer to the client */ 2128c9da1ac1SSteen Hegelund if (vcap_set_rule_id(ri) == 0) 2129c9da1ac1SSteen Hegelund goto out_free; 2130c9da1ac1SSteen Hegelund return (struct vcap_rule *)ri; 2131c9da1ac1SSteen Hegelund 2132c9da1ac1SSteen Hegelund out_free: 2133c9da1ac1SSteen Hegelund kfree(ri); 2134c9da1ac1SSteen Hegelund return ERR_PTR(-EINVAL); 2135c9da1ac1SSteen Hegelund } 2136c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_alloc_rule); 2137c9da1ac1SSteen Hegelund 2138c9da1ac1SSteen Hegelund /* Free mem of a rule owned by client after the rule as been added to the VCAP */ 2139c9da1ac1SSteen Hegelund void vcap_free_rule(struct vcap_rule *rule) 2140c9da1ac1SSteen Hegelund { 2141c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2142c9da1ac1SSteen Hegelund struct vcap_client_actionfield *caf, *next_caf; 2143c9da1ac1SSteen Hegelund struct vcap_client_keyfield *ckf, *next_ckf; 2144c9da1ac1SSteen Hegelund 2145c9da1ac1SSteen Hegelund /* Deallocate the list of keys and actions */ 2146c9da1ac1SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, &ri->data.keyfields, ctrl.list) { 2147c9da1ac1SSteen Hegelund list_del(&ckf->ctrl.list); 2148c9da1ac1SSteen Hegelund kfree(ckf); 2149c9da1ac1SSteen Hegelund } 2150c9da1ac1SSteen Hegelund list_for_each_entry_safe(caf, next_caf, &ri->data.actionfields, ctrl.list) { 2151c9da1ac1SSteen Hegelund list_del(&caf->ctrl.list); 2152c9da1ac1SSteen Hegelund kfree(caf); 2153c9da1ac1SSteen Hegelund } 2154c9da1ac1SSteen Hegelund /* Deallocate the rule */ 2155c9da1ac1SSteen Hegelund kfree(rule); 2156c9da1ac1SSteen Hegelund } 2157c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_free_rule); 2158c9da1ac1SSteen Hegelund 2159610c32b2SHoratiu Vultur struct vcap_rule *vcap_get_rule(struct vcap_control *vctrl, u32 id) 2160610c32b2SHoratiu Vultur { 2161610c32b2SHoratiu Vultur struct vcap_rule_internal *elem; 2162610c32b2SHoratiu Vultur struct vcap_rule_internal *ri; 2163610c32b2SHoratiu Vultur int err; 2164610c32b2SHoratiu Vultur 2165610c32b2SHoratiu Vultur ri = NULL; 2166610c32b2SHoratiu Vultur 2167610c32b2SHoratiu Vultur err = vcap_api_check(vctrl); 2168610c32b2SHoratiu Vultur if (err) 2169610c32b2SHoratiu Vultur return ERR_PTR(err); 2170610c32b2SHoratiu Vultur elem = vcap_lookup_rule(vctrl, id); 2171610c32b2SHoratiu Vultur if (!elem) 2172610c32b2SHoratiu Vultur return NULL; 2173610c32b2SHoratiu Vultur mutex_lock(&elem->admin->lock); 2174814e7693SSteen Hegelund ri = vcap_dup_rule(elem, elem->state == VCAP_RS_DISABLED); 2175610c32b2SHoratiu Vultur if (IS_ERR(ri)) 2176610c32b2SHoratiu Vultur goto unlock; 2177814e7693SSteen Hegelund 2178814e7693SSteen Hegelund if (ri->state == VCAP_RS_DISABLED) 2179814e7693SSteen Hegelund goto unlock; 2180814e7693SSteen Hegelund 2181610c32b2SHoratiu Vultur err = vcap_read_rule(ri); 2182610c32b2SHoratiu Vultur if (err) { 2183610c32b2SHoratiu Vultur ri = ERR_PTR(err); 2184610c32b2SHoratiu Vultur goto unlock; 2185610c32b2SHoratiu Vultur } 2186610c32b2SHoratiu Vultur err = vcap_decode_keyset(ri); 2187610c32b2SHoratiu Vultur if (err) { 2188610c32b2SHoratiu Vultur ri = ERR_PTR(err); 2189610c32b2SHoratiu Vultur goto unlock; 2190610c32b2SHoratiu Vultur } 2191610c32b2SHoratiu Vultur err = vcap_decode_actionset(ri); 2192610c32b2SHoratiu Vultur if (err) { 2193610c32b2SHoratiu Vultur ri = ERR_PTR(err); 2194610c32b2SHoratiu Vultur goto unlock; 2195610c32b2SHoratiu Vultur } 2196610c32b2SHoratiu Vultur 2197610c32b2SHoratiu Vultur unlock: 2198610c32b2SHoratiu Vultur mutex_unlock(&elem->admin->lock); 2199610c32b2SHoratiu Vultur return (struct vcap_rule *)ri; 2200610c32b2SHoratiu Vultur } 2201610c32b2SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_get_rule); 2202610c32b2SHoratiu Vultur 22032662b3f9SHoratiu Vultur /* Update existing rule */ 22042662b3f9SHoratiu Vultur int vcap_mod_rule(struct vcap_rule *rule) 22052662b3f9SHoratiu Vultur { 22062662b3f9SHoratiu Vultur struct vcap_rule_internal *ri = to_intrule(rule); 22072662b3f9SHoratiu Vultur struct vcap_counter ctr; 22082662b3f9SHoratiu Vultur int err; 22092662b3f9SHoratiu Vultur 22102662b3f9SHoratiu Vultur err = vcap_api_check(ri->vctrl); 22112662b3f9SHoratiu Vultur if (err) 22122662b3f9SHoratiu Vultur return err; 22132662b3f9SHoratiu Vultur 22142662b3f9SHoratiu Vultur if (!vcap_lookup_rule(ri->vctrl, ri->data.id)) 22152662b3f9SHoratiu Vultur return -ENOENT; 22162662b3f9SHoratiu Vultur 22172662b3f9SHoratiu Vultur mutex_lock(&ri->admin->lock); 2218814e7693SSteen Hegelund 2219814e7693SSteen Hegelund vcap_rule_set_state(ri); 2220814e7693SSteen Hegelund if (ri->state == VCAP_RS_DISABLED) 2221814e7693SSteen Hegelund goto out; 2222814e7693SSteen Hegelund 22232662b3f9SHoratiu Vultur /* Encode the bitstreams to the VCAP cache */ 22242662b3f9SHoratiu Vultur vcap_erase_cache(ri); 22252662b3f9SHoratiu Vultur err = vcap_encode_rule(ri); 22262662b3f9SHoratiu Vultur if (err) 22272662b3f9SHoratiu Vultur goto out; 22282662b3f9SHoratiu Vultur 22292662b3f9SHoratiu Vultur err = vcap_write_rule(ri); 22302662b3f9SHoratiu Vultur if (err) 22312662b3f9SHoratiu Vultur goto out; 22322662b3f9SHoratiu Vultur 22332662b3f9SHoratiu Vultur memset(&ctr, 0, sizeof(ctr)); 22342662b3f9SHoratiu Vultur err = vcap_write_counter(ri, &ctr); 22352662b3f9SHoratiu Vultur if (err) 22362662b3f9SHoratiu Vultur goto out; 22372662b3f9SHoratiu Vultur 22382662b3f9SHoratiu Vultur out: 22392662b3f9SHoratiu Vultur mutex_unlock(&ri->admin->lock); 22402662b3f9SHoratiu Vultur return err; 22412662b3f9SHoratiu Vultur } 22422662b3f9SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_mod_rule); 22432662b3f9SHoratiu Vultur 2244990e4839SSteen Hegelund /* Return the alignment offset for a new rule address */ 2245990e4839SSteen Hegelund static int vcap_valid_rule_move(struct vcap_rule_internal *el, int offset) 2246990e4839SSteen Hegelund { 2247990e4839SSteen Hegelund return (el->addr + offset) % el->size; 2248990e4839SSteen Hegelund } 2249990e4839SSteen Hegelund 2250990e4839SSteen Hegelund /* Update the rule address with an offset */ 2251990e4839SSteen Hegelund static void vcap_adjust_rule_addr(struct vcap_rule_internal *el, int offset) 2252990e4839SSteen Hegelund { 2253990e4839SSteen Hegelund el->addr += offset; 2254990e4839SSteen Hegelund } 2255990e4839SSteen Hegelund 2256990e4839SSteen Hegelund /* Rules needs to be moved to fill the gap of the deleted rule */ 2257990e4839SSteen Hegelund static int vcap_fill_rule_gap(struct vcap_rule_internal *ri) 2258990e4839SSteen Hegelund { 2259990e4839SSteen Hegelund struct vcap_admin *admin = ri->admin; 2260990e4839SSteen Hegelund struct vcap_rule_internal *elem; 2261990e4839SSteen Hegelund struct vcap_rule_move move; 2262990e4839SSteen Hegelund int gap = 0, offset = 0; 2263990e4839SSteen Hegelund 2264990e4839SSteen Hegelund /* If the first rule is deleted: Move other rules to the top */ 2265990e4839SSteen Hegelund if (list_is_first(&ri->list, &admin->rules)) 2266990e4839SSteen Hegelund offset = admin->last_valid_addr + 1 - ri->addr - ri->size; 2267990e4839SSteen Hegelund 2268990e4839SSteen Hegelund /* Locate gaps between odd size rules and adjust the move */ 2269990e4839SSteen Hegelund elem = ri; 2270990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) 2271990e4839SSteen Hegelund gap += vcap_valid_rule_move(elem, ri->size); 2272990e4839SSteen Hegelund 2273990e4839SSteen Hegelund /* Update the address in the remaining rules in the list */ 2274990e4839SSteen Hegelund elem = ri; 2275990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) 2276990e4839SSteen Hegelund vcap_adjust_rule_addr(elem, ri->size + gap + offset); 2277990e4839SSteen Hegelund 2278990e4839SSteen Hegelund /* Update the move info */ 2279990e4839SSteen Hegelund move.addr = admin->last_used_addr; 2280990e4839SSteen Hegelund move.count = ri->addr - admin->last_used_addr - gap; 2281990e4839SSteen Hegelund move.offset = -(ri->size + gap + offset); 2282990e4839SSteen Hegelund 2283990e4839SSteen Hegelund /* Do the actual move operation */ 2284990e4839SSteen Hegelund vcap_move_rules(ri, &move); 2285990e4839SSteen Hegelund 2286990e4839SSteen Hegelund return gap + offset; 2287990e4839SSteen Hegelund } 2288990e4839SSteen Hegelund 2289c9da1ac1SSteen Hegelund /* Delete rule in a VCAP instance */ 2290c9da1ac1SSteen Hegelund int vcap_del_rule(struct vcap_control *vctrl, struct net_device *ndev, u32 id) 2291c9da1ac1SSteen Hegelund { 2292c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri, *elem; 2293c9da1ac1SSteen Hegelund struct vcap_admin *admin; 2294990e4839SSteen Hegelund int gap = 0, err; 2295c9da1ac1SSteen Hegelund 2296c9da1ac1SSteen Hegelund /* This will later also handle rule moving */ 2297c9da1ac1SSteen Hegelund if (!ndev) 2298c9da1ac1SSteen Hegelund return -ENODEV; 22998e10490bSSteen Hegelund err = vcap_api_check(vctrl); 23008e10490bSSteen Hegelund if (err) 23018e10490bSSteen Hegelund return err; 2302c9da1ac1SSteen Hegelund /* Look for the rule id in all vcaps */ 2303c9da1ac1SSteen Hegelund ri = vcap_lookup_rule(vctrl, id); 2304c9da1ac1SSteen Hegelund if (!ri) 2305c9da1ac1SSteen Hegelund return -EINVAL; 2306c9da1ac1SSteen Hegelund admin = ri->admin; 23078e10490bSSteen Hegelund 2308990e4839SSteen Hegelund if (ri->addr > admin->last_used_addr) 2309990e4839SSteen Hegelund gap = vcap_fill_rule_gap(ri); 2310990e4839SSteen Hegelund 2311990e4839SSteen Hegelund /* Delete the rule from the list of rules and the cache */ 231271c9de99SSteen Hegelund mutex_lock(&admin->lock); 2313990e4839SSteen Hegelund list_del(&ri->list); 2314990e4839SSteen Hegelund vctrl->ops->init(ndev, admin, admin->last_used_addr, ri->size + gap); 2315814e7693SSteen Hegelund vcap_free_rule(&ri->data); 231671c9de99SSteen Hegelund mutex_unlock(&admin->lock); 2317990e4839SSteen Hegelund 2318277e9179SSteen Hegelund /* Update the last used address, set to default when no rules */ 2319c9da1ac1SSteen Hegelund if (list_empty(&admin->rules)) { 2320277e9179SSteen Hegelund admin->last_used_addr = admin->last_valid_addr + 1; 2321c9da1ac1SSteen Hegelund } else { 2322990e4839SSteen Hegelund elem = list_last_entry(&admin->rules, struct vcap_rule_internal, 2323990e4839SSteen Hegelund list); 2324c9da1ac1SSteen Hegelund admin->last_used_addr = elem->addr; 2325c9da1ac1SSteen Hegelund } 2326c9da1ac1SSteen Hegelund return 0; 2327c9da1ac1SSteen Hegelund } 2328c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_del_rule); 2329c9da1ac1SSteen Hegelund 23308e10490bSSteen Hegelund /* Delete all rules in the VCAP instance */ 23318e10490bSSteen Hegelund int vcap_del_rules(struct vcap_control *vctrl, struct vcap_admin *admin) 23328e10490bSSteen Hegelund { 233367456717SSteen Hegelund struct vcap_enabled_port *eport, *next_eport; 23348e10490bSSteen Hegelund struct vcap_rule_internal *ri, *next_ri; 23358e10490bSSteen Hegelund int ret = vcap_api_check(vctrl); 23368e10490bSSteen Hegelund 23378e10490bSSteen Hegelund if (ret) 23388e10490bSSteen Hegelund return ret; 233971c9de99SSteen Hegelund 234071c9de99SSteen Hegelund mutex_lock(&admin->lock); 23418e10490bSSteen Hegelund list_for_each_entry_safe(ri, next_ri, &admin->rules, list) { 23428e10490bSSteen Hegelund vctrl->ops->init(ri->ndev, admin, ri->addr, ri->size); 23438e10490bSSteen Hegelund list_del(&ri->list); 2344814e7693SSteen Hegelund vcap_free_rule(&ri->data); 23458e10490bSSteen Hegelund } 23468e10490bSSteen Hegelund admin->last_used_addr = admin->last_valid_addr; 234767456717SSteen Hegelund 234867456717SSteen Hegelund /* Remove list of enabled ports */ 234967456717SSteen Hegelund list_for_each_entry_safe(eport, next_eport, &admin->enabled, list) { 235067456717SSteen Hegelund list_del(&eport->list); 235167456717SSteen Hegelund kfree(eport); 235267456717SSteen Hegelund } 235371c9de99SSteen Hegelund mutex_unlock(&admin->lock); 235467456717SSteen Hegelund 23558e10490bSSteen Hegelund return 0; 23568e10490bSSteen Hegelund } 23578e10490bSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_del_rules); 23588e10490bSSteen Hegelund 2359465a38a2SSteen Hegelund /* Find a client key field in a rule */ 2360465a38a2SSteen Hegelund static struct vcap_client_keyfield * 2361465a38a2SSteen Hegelund vcap_find_keyfield(struct vcap_rule *rule, enum vcap_key_field key) 2362465a38a2SSteen Hegelund { 2363465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2364465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf; 2365465a38a2SSteen Hegelund 2366465a38a2SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 2367465a38a2SSteen Hegelund if (ckf->ctrl.key == key) 2368465a38a2SSteen Hegelund return ckf; 2369465a38a2SSteen Hegelund return NULL; 2370465a38a2SSteen Hegelund } 2371465a38a2SSteen Hegelund 237246be056eSSteen Hegelund /* Find information on a key field in a rule */ 237346be056eSSteen Hegelund const struct vcap_field *vcap_lookup_keyfield(struct vcap_rule *rule, 237446be056eSSteen Hegelund enum vcap_key_field key) 237546be056eSSteen Hegelund { 23768e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 237746be056eSSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 237846be056eSSteen Hegelund enum vcap_type vt = ri->admin->vtype; 237946be056eSSteen Hegelund const struct vcap_field *fields; 238046be056eSSteen Hegelund 238146be056eSSteen Hegelund if (keyset == VCAP_KFS_NO_VALUE) 238246be056eSSteen Hegelund return NULL; 238346be056eSSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 238446be056eSSteen Hegelund if (!fields) 238546be056eSSteen Hegelund return NULL; 238646be056eSSteen Hegelund return &fields[key]; 238746be056eSSteen Hegelund } 238846be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_lookup_keyfield); 238946be056eSSteen Hegelund 2390242df4f7SSteen Hegelund /* Check if the keyfield is already in the rule */ 2391242df4f7SSteen Hegelund static bool vcap_keyfield_unique(struct vcap_rule *rule, 2392242df4f7SSteen Hegelund enum vcap_key_field key) 2393242df4f7SSteen Hegelund { 2394242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2395242df4f7SSteen Hegelund const struct vcap_client_keyfield *ckf; 2396242df4f7SSteen Hegelund 2397242df4f7SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 2398242df4f7SSteen Hegelund if (ckf->ctrl.key == key) 2399242df4f7SSteen Hegelund return false; 2400242df4f7SSteen Hegelund return true; 2401242df4f7SSteen Hegelund } 2402242df4f7SSteen Hegelund 2403242df4f7SSteen Hegelund /* Check if the keyfield is in the keyset */ 2404242df4f7SSteen Hegelund static bool vcap_keyfield_match_keyset(struct vcap_rule *rule, 2405242df4f7SSteen Hegelund enum vcap_key_field key) 2406242df4f7SSteen Hegelund { 2407242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2408242df4f7SSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 2409242df4f7SSteen Hegelund enum vcap_type vt = ri->admin->vtype; 2410242df4f7SSteen Hegelund const struct vcap_field *fields; 2411242df4f7SSteen Hegelund 2412242df4f7SSteen Hegelund /* the field is accepted if the rule has no keyset yet */ 2413242df4f7SSteen Hegelund if (keyset == VCAP_KFS_NO_VALUE) 2414242df4f7SSteen Hegelund return true; 2415242df4f7SSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 2416242df4f7SSteen Hegelund if (!fields) 2417242df4f7SSteen Hegelund return false; 2418242df4f7SSteen Hegelund /* if there is a width there is a way */ 2419242df4f7SSteen Hegelund return fields[key].width > 0; 2420242df4f7SSteen Hegelund } 2421242df4f7SSteen Hegelund 2422c9da1ac1SSteen Hegelund static int vcap_rule_add_key(struct vcap_rule *rule, 2423c9da1ac1SSteen Hegelund enum vcap_key_field key, 2424c9da1ac1SSteen Hegelund enum vcap_field_type ftype, 2425c9da1ac1SSteen Hegelund struct vcap_client_keyfield_data *data) 2426c9da1ac1SSteen Hegelund { 2427242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2428c9da1ac1SSteen Hegelund struct vcap_client_keyfield *field; 2429c9da1ac1SSteen Hegelund 2430242df4f7SSteen Hegelund if (!vcap_keyfield_unique(rule, key)) { 2431242df4f7SSteen Hegelund pr_warn("%s:%d: keyfield %s is already in the rule\n", 2432242df4f7SSteen Hegelund __func__, __LINE__, 2433242df4f7SSteen Hegelund vcap_keyfield_name(ri->vctrl, key)); 2434242df4f7SSteen Hegelund return -EINVAL; 2435242df4f7SSteen Hegelund } 2436242df4f7SSteen Hegelund 2437242df4f7SSteen Hegelund if (!vcap_keyfield_match_keyset(rule, key)) { 2438242df4f7SSteen Hegelund pr_err("%s:%d: keyfield %s does not belong in the rule keyset\n", 2439242df4f7SSteen Hegelund __func__, __LINE__, 2440242df4f7SSteen Hegelund vcap_keyfield_name(ri->vctrl, key)); 2441242df4f7SSteen Hegelund return -EINVAL; 2442242df4f7SSteen Hegelund } 2443242df4f7SSteen Hegelund 2444c9da1ac1SSteen Hegelund field = kzalloc(sizeof(*field), GFP_KERNEL); 2445c9da1ac1SSteen Hegelund if (!field) 2446c9da1ac1SSteen Hegelund return -ENOMEM; 244733e3a273SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 2448c9da1ac1SSteen Hegelund field->ctrl.key = key; 2449c9da1ac1SSteen Hegelund field->ctrl.type = ftype; 2450c9da1ac1SSteen Hegelund list_add_tail(&field->ctrl.list, &rule->keyfields); 2451c9da1ac1SSteen Hegelund return 0; 2452c9da1ac1SSteen Hegelund } 2453c9da1ac1SSteen Hegelund 245446be056eSSteen Hegelund static void vcap_rule_set_key_bitsize(struct vcap_u1_key *u1, enum vcap_bit val) 245546be056eSSteen Hegelund { 245646be056eSSteen Hegelund switch (val) { 245746be056eSSteen Hegelund case VCAP_BIT_0: 245846be056eSSteen Hegelund u1->value = 0; 245946be056eSSteen Hegelund u1->mask = 1; 246046be056eSSteen Hegelund break; 246146be056eSSteen Hegelund case VCAP_BIT_1: 246246be056eSSteen Hegelund u1->value = 1; 246346be056eSSteen Hegelund u1->mask = 1; 246446be056eSSteen Hegelund break; 246546be056eSSteen Hegelund case VCAP_BIT_ANY: 246646be056eSSteen Hegelund u1->value = 0; 246746be056eSSteen Hegelund u1->mask = 0; 246846be056eSSteen Hegelund break; 246946be056eSSteen Hegelund } 247046be056eSSteen Hegelund } 247146be056eSSteen Hegelund 247246be056eSSteen Hegelund /* Add a bit key with value and mask to the rule */ 247346be056eSSteen Hegelund int vcap_rule_add_key_bit(struct vcap_rule *rule, enum vcap_key_field key, 247446be056eSSteen Hegelund enum vcap_bit val) 247546be056eSSteen Hegelund { 247646be056eSSteen Hegelund struct vcap_client_keyfield_data data; 247746be056eSSteen Hegelund 247846be056eSSteen Hegelund vcap_rule_set_key_bitsize(&data.u1, val); 247946be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_BIT, &data); 248046be056eSSteen Hegelund } 248146be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_bit); 248246be056eSSteen Hegelund 248346be056eSSteen Hegelund /* Add a 32 bit key field with value and mask to the rule */ 248446be056eSSteen Hegelund int vcap_rule_add_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 248546be056eSSteen Hegelund u32 value, u32 mask) 248646be056eSSteen Hegelund { 248746be056eSSteen Hegelund struct vcap_client_keyfield_data data; 248846be056eSSteen Hegelund 248946be056eSSteen Hegelund data.u32.value = value; 249046be056eSSteen Hegelund data.u32.mask = mask; 249146be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U32, &data); 249246be056eSSteen Hegelund } 249346be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u32); 249446be056eSSteen Hegelund 2495c9da1ac1SSteen Hegelund /* Add a 48 bit key with value and mask to the rule */ 2496c9da1ac1SSteen Hegelund int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key, 2497c9da1ac1SSteen Hegelund struct vcap_u48_key *fieldval) 2498c9da1ac1SSteen Hegelund { 2499c9da1ac1SSteen Hegelund struct vcap_client_keyfield_data data; 2500c9da1ac1SSteen Hegelund 2501c9da1ac1SSteen Hegelund memcpy(&data.u48, fieldval, sizeof(data.u48)); 2502c9da1ac1SSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U48, &data); 2503c9da1ac1SSteen Hegelund } 2504c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u48); 2505c9da1ac1SSteen Hegelund 250646be056eSSteen Hegelund /* Add a 72 bit key with value and mask to the rule */ 250746be056eSSteen Hegelund int vcap_rule_add_key_u72(struct vcap_rule *rule, enum vcap_key_field key, 250846be056eSSteen Hegelund struct vcap_u72_key *fieldval) 250946be056eSSteen Hegelund { 251046be056eSSteen Hegelund struct vcap_client_keyfield_data data; 251146be056eSSteen Hegelund 251246be056eSSteen Hegelund memcpy(&data.u72, fieldval, sizeof(data.u72)); 251346be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U72, &data); 251446be056eSSteen Hegelund } 251546be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u72); 251646be056eSSteen Hegelund 2517d6c2964dSSteen Hegelund /* Add a 128 bit key with value and mask to the rule */ 2518d6c2964dSSteen Hegelund int vcap_rule_add_key_u128(struct vcap_rule *rule, enum vcap_key_field key, 2519d6c2964dSSteen Hegelund struct vcap_u128_key *fieldval) 2520d6c2964dSSteen Hegelund { 2521d6c2964dSSteen Hegelund struct vcap_client_keyfield_data data; 2522d6c2964dSSteen Hegelund 2523d6c2964dSSteen Hegelund memcpy(&data.u128, fieldval, sizeof(data.u128)); 2524d6c2964dSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U128, &data); 2525d6c2964dSSteen Hegelund } 2526d6c2964dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u128); 2527d6c2964dSSteen Hegelund 25286009b61fSHoratiu Vultur int vcap_rule_get_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 25296009b61fSHoratiu Vultur u32 *value, u32 *mask) 25306009b61fSHoratiu Vultur { 25316009b61fSHoratiu Vultur struct vcap_client_keyfield *ckf; 25326009b61fSHoratiu Vultur 25336009b61fSHoratiu Vultur ckf = vcap_find_keyfield(rule, key); 25346009b61fSHoratiu Vultur if (!ckf) 25356009b61fSHoratiu Vultur return -ENOENT; 25366009b61fSHoratiu Vultur 25376009b61fSHoratiu Vultur *value = ckf->data.u32.value; 25386009b61fSHoratiu Vultur *mask = ckf->data.u32.mask; 25396009b61fSHoratiu Vultur 25406009b61fSHoratiu Vultur return 0; 25416009b61fSHoratiu Vultur } 25426009b61fSHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_rule_get_key_u32); 25436009b61fSHoratiu Vultur 2544465a38a2SSteen Hegelund /* Find a client action field in a rule */ 2545465a38a2SSteen Hegelund static struct vcap_client_actionfield * 2546465a38a2SSteen Hegelund vcap_find_actionfield(struct vcap_rule *rule, enum vcap_action_field act) 2547465a38a2SSteen Hegelund { 2548465a38a2SSteen Hegelund struct vcap_rule_internal *ri = (struct vcap_rule_internal *)rule; 2549465a38a2SSteen Hegelund struct vcap_client_actionfield *caf; 2550465a38a2SSteen Hegelund 2551465a38a2SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) 2552465a38a2SSteen Hegelund if (caf->ctrl.action == act) 2553465a38a2SSteen Hegelund return caf; 2554465a38a2SSteen Hegelund return NULL; 2555465a38a2SSteen Hegelund } 2556465a38a2SSteen Hegelund 2557242df4f7SSteen Hegelund /* Check if the actionfield is already in the rule */ 2558242df4f7SSteen Hegelund static bool vcap_actionfield_unique(struct vcap_rule *rule, 2559242df4f7SSteen Hegelund enum vcap_action_field act) 2560242df4f7SSteen Hegelund { 2561242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2562242df4f7SSteen Hegelund const struct vcap_client_actionfield *caf; 2563242df4f7SSteen Hegelund 2564242df4f7SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) 2565242df4f7SSteen Hegelund if (caf->ctrl.action == act) 2566242df4f7SSteen Hegelund return false; 2567242df4f7SSteen Hegelund return true; 2568242df4f7SSteen Hegelund } 2569242df4f7SSteen Hegelund 2570242df4f7SSteen Hegelund /* Check if the actionfield is in the actionset */ 2571242df4f7SSteen Hegelund static bool vcap_actionfield_match_actionset(struct vcap_rule *rule, 2572242df4f7SSteen Hegelund enum vcap_action_field action) 2573242df4f7SSteen Hegelund { 2574242df4f7SSteen Hegelund enum vcap_actionfield_set actionset = rule->actionset; 2575242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2576242df4f7SSteen Hegelund enum vcap_type vt = ri->admin->vtype; 2577242df4f7SSteen Hegelund const struct vcap_field *fields; 2578242df4f7SSteen Hegelund 2579242df4f7SSteen Hegelund /* the field is accepted if the rule has no actionset yet */ 2580242df4f7SSteen Hegelund if (actionset == VCAP_AFS_NO_VALUE) 2581242df4f7SSteen Hegelund return true; 2582242df4f7SSteen Hegelund fields = vcap_actionfields(ri->vctrl, vt, actionset); 2583242df4f7SSteen Hegelund if (!fields) 2584242df4f7SSteen Hegelund return false; 2585242df4f7SSteen Hegelund /* if there is a width there is a way */ 2586242df4f7SSteen Hegelund return fields[action].width > 0; 2587242df4f7SSteen Hegelund } 2588242df4f7SSteen Hegelund 2589c9da1ac1SSteen Hegelund static int vcap_rule_add_action(struct vcap_rule *rule, 2590c9da1ac1SSteen Hegelund enum vcap_action_field action, 2591c9da1ac1SSteen Hegelund enum vcap_field_type ftype, 2592c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data *data) 2593c9da1ac1SSteen Hegelund { 2594242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2595c9da1ac1SSteen Hegelund struct vcap_client_actionfield *field; 2596c9da1ac1SSteen Hegelund 2597242df4f7SSteen Hegelund if (!vcap_actionfield_unique(rule, action)) { 2598242df4f7SSteen Hegelund pr_warn("%s:%d: actionfield %s is already in the rule\n", 2599242df4f7SSteen Hegelund __func__, __LINE__, 2600242df4f7SSteen Hegelund vcap_actionfield_name(ri->vctrl, action)); 2601242df4f7SSteen Hegelund return -EINVAL; 2602242df4f7SSteen Hegelund } 2603242df4f7SSteen Hegelund 2604242df4f7SSteen Hegelund if (!vcap_actionfield_match_actionset(rule, action)) { 2605242df4f7SSteen Hegelund pr_err("%s:%d: actionfield %s does not belong in the rule actionset\n", 2606242df4f7SSteen Hegelund __func__, __LINE__, 2607242df4f7SSteen Hegelund vcap_actionfield_name(ri->vctrl, action)); 2608242df4f7SSteen Hegelund return -EINVAL; 2609242df4f7SSteen Hegelund } 2610242df4f7SSteen Hegelund 2611c9da1ac1SSteen Hegelund field = kzalloc(sizeof(*field), GFP_KERNEL); 2612c9da1ac1SSteen Hegelund if (!field) 2613c9da1ac1SSteen Hegelund return -ENOMEM; 261433e3a273SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 2615c9da1ac1SSteen Hegelund field->ctrl.action = action; 2616c9da1ac1SSteen Hegelund field->ctrl.type = ftype; 2617c9da1ac1SSteen Hegelund list_add_tail(&field->ctrl.list, &rule->actionfields); 2618c9da1ac1SSteen Hegelund return 0; 2619c9da1ac1SSteen Hegelund } 2620c9da1ac1SSteen Hegelund 2621c9da1ac1SSteen Hegelund static void vcap_rule_set_action_bitsize(struct vcap_u1_action *u1, 2622c9da1ac1SSteen Hegelund enum vcap_bit val) 2623c9da1ac1SSteen Hegelund { 2624c9da1ac1SSteen Hegelund switch (val) { 2625c9da1ac1SSteen Hegelund case VCAP_BIT_0: 2626c9da1ac1SSteen Hegelund u1->value = 0; 2627c9da1ac1SSteen Hegelund break; 2628c9da1ac1SSteen Hegelund case VCAP_BIT_1: 2629c9da1ac1SSteen Hegelund u1->value = 1; 2630c9da1ac1SSteen Hegelund break; 2631c9da1ac1SSteen Hegelund case VCAP_BIT_ANY: 2632c9da1ac1SSteen Hegelund u1->value = 0; 2633c9da1ac1SSteen Hegelund break; 2634c9da1ac1SSteen Hegelund } 2635c9da1ac1SSteen Hegelund } 2636c9da1ac1SSteen Hegelund 2637c9da1ac1SSteen Hegelund /* Add a bit action with value to the rule */ 2638c9da1ac1SSteen Hegelund int vcap_rule_add_action_bit(struct vcap_rule *rule, 2639c9da1ac1SSteen Hegelund enum vcap_action_field action, 2640c9da1ac1SSteen Hegelund enum vcap_bit val) 2641c9da1ac1SSteen Hegelund { 2642c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data data; 2643c9da1ac1SSteen Hegelund 2644c9da1ac1SSteen Hegelund vcap_rule_set_action_bitsize(&data.u1, val); 2645c9da1ac1SSteen Hegelund return vcap_rule_add_action(rule, action, VCAP_FIELD_BIT, &data); 2646c9da1ac1SSteen Hegelund } 2647c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_action_bit); 2648c9da1ac1SSteen Hegelund 2649c9da1ac1SSteen Hegelund /* Add a 32 bit action field with value to the rule */ 2650c9da1ac1SSteen Hegelund int vcap_rule_add_action_u32(struct vcap_rule *rule, 2651c9da1ac1SSteen Hegelund enum vcap_action_field action, 2652c9da1ac1SSteen Hegelund u32 value) 2653c9da1ac1SSteen Hegelund { 2654c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data data; 2655c9da1ac1SSteen Hegelund 2656c9da1ac1SSteen Hegelund data.u32.value = value; 2657c9da1ac1SSteen Hegelund return vcap_rule_add_action(rule, action, VCAP_FIELD_U32, &data); 2658c9da1ac1SSteen Hegelund } 2659c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_action_u32); 2660c9da1ac1SSteen Hegelund 2661f13230a4SSteen Hegelund static int vcap_read_counter(struct vcap_rule_internal *ri, 2662f13230a4SSteen Hegelund struct vcap_counter *ctr) 2663f13230a4SSteen Hegelund { 2664f13230a4SSteen Hegelund struct vcap_admin *admin = ri->admin; 2665f13230a4SSteen Hegelund 2666f13230a4SSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_READ, VCAP_SEL_COUNTER, 2667f13230a4SSteen Hegelund ri->addr); 2668f13230a4SSteen Hegelund ri->vctrl->ops->cache_read(ri->ndev, admin, VCAP_SEL_COUNTER, 2669f13230a4SSteen Hegelund ri->counter_id, 0); 2670f13230a4SSteen Hegelund ctr->value = admin->cache.counter; 2671f13230a4SSteen Hegelund ctr->sticky = admin->cache.sticky; 2672f13230a4SSteen Hegelund return 0; 2673f13230a4SSteen Hegelund } 2674f13230a4SSteen Hegelund 2675c9da1ac1SSteen Hegelund /* Copy to host byte order */ 2676c9da1ac1SSteen Hegelund void vcap_netbytes_copy(u8 *dst, u8 *src, int count) 2677c9da1ac1SSteen Hegelund { 2678c9da1ac1SSteen Hegelund int idx; 2679c9da1ac1SSteen Hegelund 2680c9da1ac1SSteen Hegelund for (idx = 0; idx < count; ++idx, ++dst) 2681c9da1ac1SSteen Hegelund *dst = src[count - idx - 1]; 2682c9da1ac1SSteen Hegelund } 2683c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_netbytes_copy); 2684c9da1ac1SSteen Hegelund 2685c9da1ac1SSteen Hegelund /* Convert validation error code into tc extact error message */ 2686c9da1ac1SSteen Hegelund void vcap_set_tc_exterr(struct flow_cls_offload *fco, struct vcap_rule *vrule) 2687c9da1ac1SSteen Hegelund { 2688c9da1ac1SSteen Hegelund switch (vrule->exterr) { 2689c9da1ac1SSteen Hegelund case VCAP_ERR_NONE: 2690c9da1ac1SSteen Hegelund break; 2691c9da1ac1SSteen Hegelund case VCAP_ERR_NO_ADMIN: 2692c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2693c9da1ac1SSteen Hegelund "Missing VCAP instance"); 2694c9da1ac1SSteen Hegelund break; 2695c9da1ac1SSteen Hegelund case VCAP_ERR_NO_NETDEV: 2696c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2697c9da1ac1SSteen Hegelund "Missing network interface"); 2698c9da1ac1SSteen Hegelund break; 2699c9da1ac1SSteen Hegelund case VCAP_ERR_NO_KEYSET_MATCH: 2700c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2701c9da1ac1SSteen Hegelund "No keyset matched the filter keys"); 2702c9da1ac1SSteen Hegelund break; 2703c9da1ac1SSteen Hegelund case VCAP_ERR_NO_ACTIONSET_MATCH: 2704c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2705c9da1ac1SSteen Hegelund "No actionset matched the filter actions"); 2706c9da1ac1SSteen Hegelund break; 2707c9da1ac1SSteen Hegelund case VCAP_ERR_NO_PORT_KEYSET_MATCH: 2708c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2709c9da1ac1SSteen Hegelund "No port keyset matched the filter keys"); 2710c9da1ac1SSteen Hegelund break; 2711c9da1ac1SSteen Hegelund } 2712c9da1ac1SSteen Hegelund } 2713c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_set_tc_exterr); 271467d63751SSteen Hegelund 2715*18a15c76SSteen Hegelund /* Write a rule to VCAP HW to enable it */ 2716*18a15c76SSteen Hegelund static int vcap_enable_rule(struct vcap_rule_internal *ri) 2717*18a15c76SSteen Hegelund { 2718*18a15c76SSteen Hegelund struct vcap_client_actionfield *af, *naf; 2719*18a15c76SSteen Hegelund struct vcap_client_keyfield *kf, *nkf; 2720*18a15c76SSteen Hegelund int err; 2721*18a15c76SSteen Hegelund 2722*18a15c76SSteen Hegelund vcap_erase_cache(ri); 2723*18a15c76SSteen Hegelund err = vcap_encode_rule(ri); 2724*18a15c76SSteen Hegelund if (err) 2725*18a15c76SSteen Hegelund goto out; 2726*18a15c76SSteen Hegelund err = vcap_write_rule(ri); 2727*18a15c76SSteen Hegelund if (err) 2728*18a15c76SSteen Hegelund goto out; 2729*18a15c76SSteen Hegelund 2730*18a15c76SSteen Hegelund /* Deallocate the list of keys and actions */ 2731*18a15c76SSteen Hegelund list_for_each_entry_safe(kf, nkf, &ri->data.keyfields, ctrl.list) { 2732*18a15c76SSteen Hegelund list_del(&kf->ctrl.list); 2733*18a15c76SSteen Hegelund kfree(kf); 2734*18a15c76SSteen Hegelund } 2735*18a15c76SSteen Hegelund list_for_each_entry_safe(af, naf, &ri->data.actionfields, ctrl.list) { 2736*18a15c76SSteen Hegelund list_del(&af->ctrl.list); 2737*18a15c76SSteen Hegelund kfree(af); 2738*18a15c76SSteen Hegelund } 2739*18a15c76SSteen Hegelund ri->state = VCAP_RS_ENABLED; 2740*18a15c76SSteen Hegelund out: 2741*18a15c76SSteen Hegelund return err; 2742*18a15c76SSteen Hegelund } 2743*18a15c76SSteen Hegelund 2744*18a15c76SSteen Hegelund /* Enable all disabled rules for a specific chain/port in the VCAP HW */ 2745*18a15c76SSteen Hegelund static int vcap_enable_rules(struct vcap_control *vctrl, 2746*18a15c76SSteen Hegelund struct net_device *ndev, int chain) 2747*18a15c76SSteen Hegelund { 2748*18a15c76SSteen Hegelund struct vcap_rule_internal *ri; 2749*18a15c76SSteen Hegelund struct vcap_admin *admin; 2750*18a15c76SSteen Hegelund int err = 0; 2751*18a15c76SSteen Hegelund 2752*18a15c76SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 2753*18a15c76SSteen Hegelund if (!(chain >= admin->first_cid && chain <= admin->last_cid)) 2754*18a15c76SSteen Hegelund continue; 2755*18a15c76SSteen Hegelund 2756*18a15c76SSteen Hegelund /* Found the admin, now find the offloadable rules */ 2757*18a15c76SSteen Hegelund mutex_lock(&admin->lock); 2758*18a15c76SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) { 2759*18a15c76SSteen Hegelund if (ri->data.vcap_chain_id != chain) 2760*18a15c76SSteen Hegelund continue; 2761*18a15c76SSteen Hegelund 2762*18a15c76SSteen Hegelund if (ri->ndev != ndev) 2763*18a15c76SSteen Hegelund continue; 2764*18a15c76SSteen Hegelund 2765*18a15c76SSteen Hegelund if (ri->state != VCAP_RS_DISABLED) 2766*18a15c76SSteen Hegelund continue; 2767*18a15c76SSteen Hegelund 2768*18a15c76SSteen Hegelund err = vcap_enable_rule(ri); 2769*18a15c76SSteen Hegelund if (err) 2770*18a15c76SSteen Hegelund break; 2771*18a15c76SSteen Hegelund } 2772*18a15c76SSteen Hegelund mutex_unlock(&admin->lock); 2773*18a15c76SSteen Hegelund if (err) 2774*18a15c76SSteen Hegelund break; 2775*18a15c76SSteen Hegelund } 2776*18a15c76SSteen Hegelund return err; 2777*18a15c76SSteen Hegelund } 2778*18a15c76SSteen Hegelund 2779*18a15c76SSteen Hegelund /* Read and erase a rule from VCAP HW to disable it */ 2780*18a15c76SSteen Hegelund static int vcap_disable_rule(struct vcap_rule_internal *ri) 2781*18a15c76SSteen Hegelund { 2782*18a15c76SSteen Hegelund int err; 2783*18a15c76SSteen Hegelund 2784*18a15c76SSteen Hegelund err = vcap_read_rule(ri); 2785*18a15c76SSteen Hegelund if (err) 2786*18a15c76SSteen Hegelund return err; 2787*18a15c76SSteen Hegelund err = vcap_decode_keyset(ri); 2788*18a15c76SSteen Hegelund if (err) 2789*18a15c76SSteen Hegelund return err; 2790*18a15c76SSteen Hegelund err = vcap_decode_actionset(ri); 2791*18a15c76SSteen Hegelund if (err) 2792*18a15c76SSteen Hegelund return err; 2793*18a15c76SSteen Hegelund 2794*18a15c76SSteen Hegelund ri->state = VCAP_RS_DISABLED; 2795*18a15c76SSteen Hegelund ri->vctrl->ops->init(ri->ndev, ri->admin, ri->addr, ri->size); 2796*18a15c76SSteen Hegelund return 0; 2797*18a15c76SSteen Hegelund } 2798*18a15c76SSteen Hegelund 2799*18a15c76SSteen Hegelund /* Disable all enabled rules for a specific chain/port in the VCAP HW */ 2800*18a15c76SSteen Hegelund static int vcap_disable_rules(struct vcap_control *vctrl, 2801*18a15c76SSteen Hegelund struct net_device *ndev, int chain) 2802*18a15c76SSteen Hegelund { 2803*18a15c76SSteen Hegelund struct vcap_rule_internal *ri; 2804*18a15c76SSteen Hegelund struct vcap_admin *admin; 2805*18a15c76SSteen Hegelund int err = 0; 2806*18a15c76SSteen Hegelund 2807*18a15c76SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 2808*18a15c76SSteen Hegelund if (!(chain >= admin->first_cid && chain <= admin->last_cid)) 2809*18a15c76SSteen Hegelund continue; 2810*18a15c76SSteen Hegelund 2811*18a15c76SSteen Hegelund /* Found the admin, now find the rules on the chain */ 2812*18a15c76SSteen Hegelund mutex_lock(&admin->lock); 2813*18a15c76SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) { 2814*18a15c76SSteen Hegelund if (ri->data.vcap_chain_id != chain) 2815*18a15c76SSteen Hegelund continue; 2816*18a15c76SSteen Hegelund 2817*18a15c76SSteen Hegelund if (ri->ndev != ndev) 2818*18a15c76SSteen Hegelund continue; 2819*18a15c76SSteen Hegelund 2820*18a15c76SSteen Hegelund if (ri->state != VCAP_RS_ENABLED) 2821*18a15c76SSteen Hegelund continue; 2822*18a15c76SSteen Hegelund 2823*18a15c76SSteen Hegelund err = vcap_disable_rule(ri); 2824*18a15c76SSteen Hegelund if (err) 2825*18a15c76SSteen Hegelund break; 2826*18a15c76SSteen Hegelund } 2827*18a15c76SSteen Hegelund mutex_unlock(&admin->lock); 2828*18a15c76SSteen Hegelund if (err) 2829*18a15c76SSteen Hegelund break; 2830*18a15c76SSteen Hegelund } 2831*18a15c76SSteen Hegelund return err; 2832*18a15c76SSteen Hegelund } 2833*18a15c76SSteen Hegelund 283467456717SSteen Hegelund /* Check if this port is already enabled for this VCAP instance */ 2835cfd9e7b7SSteen Hegelund static bool vcap_is_enabled(struct vcap_control *vctrl, struct net_device *ndev, 2836cfd9e7b7SSteen Hegelund int dst_cid) 283767456717SSteen Hegelund { 283867456717SSteen Hegelund struct vcap_enabled_port *eport; 2839cfd9e7b7SSteen Hegelund struct vcap_admin *admin; 284067456717SSteen Hegelund 2841cfd9e7b7SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 284267456717SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) 2843cfd9e7b7SSteen Hegelund if (eport->dst_cid == dst_cid && eport->ndev == ndev) 284467456717SSteen Hegelund return true; 284567456717SSteen Hegelund 284667456717SSteen Hegelund return false; 284767456717SSteen Hegelund } 284867456717SSteen Hegelund 2849cfd9e7b7SSteen Hegelund /* Enable this port and chain id in a VCAP instance */ 2850cfd9e7b7SSteen Hegelund static int vcap_enable(struct vcap_control *vctrl, struct net_device *ndev, 2851cfd9e7b7SSteen Hegelund unsigned long cookie, int src_cid, int dst_cid) 285267456717SSteen Hegelund { 285367456717SSteen Hegelund struct vcap_enabled_port *eport; 2854cfd9e7b7SSteen Hegelund struct vcap_admin *admin; 2855cfd9e7b7SSteen Hegelund 2856cfd9e7b7SSteen Hegelund if (src_cid >= dst_cid) 2857cfd9e7b7SSteen Hegelund return -EFAULT; 2858cfd9e7b7SSteen Hegelund 2859cfd9e7b7SSteen Hegelund admin = vcap_find_admin(vctrl, dst_cid); 2860cfd9e7b7SSteen Hegelund if (!admin) 2861cfd9e7b7SSteen Hegelund return -ENOENT; 286267456717SSteen Hegelund 286367456717SSteen Hegelund eport = kzalloc(sizeof(*eport), GFP_KERNEL); 286467456717SSteen Hegelund if (!eport) 286567456717SSteen Hegelund return -ENOMEM; 286667456717SSteen Hegelund 286767456717SSteen Hegelund eport->ndev = ndev; 286867456717SSteen Hegelund eport->cookie = cookie; 2869cfd9e7b7SSteen Hegelund eport->src_cid = src_cid; 2870cfd9e7b7SSteen Hegelund eport->dst_cid = dst_cid; 2871cfd9e7b7SSteen Hegelund mutex_lock(&admin->lock); 287267456717SSteen Hegelund list_add_tail(&eport->list, &admin->enabled); 2873cfd9e7b7SSteen Hegelund mutex_unlock(&admin->lock); 287467456717SSteen Hegelund 2875*18a15c76SSteen Hegelund if (vcap_path_exist(vctrl, ndev, src_cid)) { 2876*18a15c76SSteen Hegelund /* Enable chained lookups */ 2877*18a15c76SSteen Hegelund while (dst_cid) { 2878*18a15c76SSteen Hegelund admin = vcap_find_admin(vctrl, dst_cid); 2879*18a15c76SSteen Hegelund if (!admin) 2880*18a15c76SSteen Hegelund return -ENOENT; 2881*18a15c76SSteen Hegelund 2882*18a15c76SSteen Hegelund vcap_enable_rules(vctrl, ndev, dst_cid); 2883*18a15c76SSteen Hegelund dst_cid = vcap_get_next_chain(vctrl, ndev, dst_cid); 2884*18a15c76SSteen Hegelund } 2885*18a15c76SSteen Hegelund } 288667456717SSteen Hegelund return 0; 288767456717SSteen Hegelund } 288867456717SSteen Hegelund 2889cfd9e7b7SSteen Hegelund /* Disable this port and chain id for a VCAP instance */ 2890cfd9e7b7SSteen Hegelund static int vcap_disable(struct vcap_control *vctrl, struct net_device *ndev, 289167456717SSteen Hegelund unsigned long cookie) 289267456717SSteen Hegelund { 2893cfd9e7b7SSteen Hegelund struct vcap_enabled_port *elem, *eport = NULL; 2894cfd9e7b7SSteen Hegelund struct vcap_admin *found = NULL, *admin; 2895*18a15c76SSteen Hegelund int dst_cid; 289667456717SSteen Hegelund 2897cfd9e7b7SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 2898cfd9e7b7SSteen Hegelund list_for_each_entry(elem, &admin->enabled, list) { 2899cfd9e7b7SSteen Hegelund if (elem->cookie == cookie && elem->ndev == ndev) { 2900cfd9e7b7SSteen Hegelund eport = elem; 2901cfd9e7b7SSteen Hegelund found = admin; 2902cfd9e7b7SSteen Hegelund break; 2903cfd9e7b7SSteen Hegelund } 2904cfd9e7b7SSteen Hegelund } 2905cfd9e7b7SSteen Hegelund if (eport) 2906cfd9e7b7SSteen Hegelund break; 2907cfd9e7b7SSteen Hegelund } 2908cfd9e7b7SSteen Hegelund 2909cfd9e7b7SSteen Hegelund if (!eport) 2910cfd9e7b7SSteen Hegelund return -ENOENT; 2911cfd9e7b7SSteen Hegelund 2912*18a15c76SSteen Hegelund /* Disable chained lookups */ 2913*18a15c76SSteen Hegelund dst_cid = eport->dst_cid; 2914*18a15c76SSteen Hegelund while (dst_cid) { 2915*18a15c76SSteen Hegelund admin = vcap_find_admin(vctrl, dst_cid); 2916*18a15c76SSteen Hegelund if (!admin) 2917*18a15c76SSteen Hegelund return -ENOENT; 2918*18a15c76SSteen Hegelund 2919*18a15c76SSteen Hegelund vcap_disable_rules(vctrl, ndev, dst_cid); 2920*18a15c76SSteen Hegelund dst_cid = vcap_get_next_chain(vctrl, ndev, dst_cid); 2921*18a15c76SSteen Hegelund } 2922*18a15c76SSteen Hegelund 2923cfd9e7b7SSteen Hegelund mutex_lock(&found->lock); 292467456717SSteen Hegelund list_del(&eport->list); 2925cfd9e7b7SSteen Hegelund mutex_unlock(&found->lock); 292667456717SSteen Hegelund kfree(eport); 292767456717SSteen Hegelund return 0; 292867456717SSteen Hegelund } 292967456717SSteen Hegelund 2930cfd9e7b7SSteen Hegelund /* Enable/Disable the VCAP instance lookups */ 293167456717SSteen Hegelund int vcap_enable_lookups(struct vcap_control *vctrl, struct net_device *ndev, 2932cfd9e7b7SSteen Hegelund int src_cid, int dst_cid, unsigned long cookie, 2933cfd9e7b7SSteen Hegelund bool enable) 293467456717SSteen Hegelund { 293567456717SSteen Hegelund int err; 293667456717SSteen Hegelund 293767456717SSteen Hegelund err = vcap_api_check(vctrl); 293867456717SSteen Hegelund if (err) 293967456717SSteen Hegelund return err; 294067456717SSteen Hegelund 294167456717SSteen Hegelund if (!ndev) 294267456717SSteen Hegelund return -ENODEV; 294367456717SSteen Hegelund 2944cfd9e7b7SSteen Hegelund /* Source and destination must be the first chain in a lookup */ 2945cfd9e7b7SSteen Hegelund if (src_cid % VCAP_CID_LOOKUP_SIZE) 2946cfd9e7b7SSteen Hegelund return -EFAULT; 2947cfd9e7b7SSteen Hegelund if (dst_cid % VCAP_CID_LOOKUP_SIZE) 294867456717SSteen Hegelund return -EFAULT; 294967456717SSteen Hegelund 2950cfd9e7b7SSteen Hegelund if (enable) { 2951cfd9e7b7SSteen Hegelund if (vcap_is_enabled(vctrl, ndev, dst_cid)) 295267456717SSteen Hegelund return -EADDRINUSE; 2953cfd9e7b7SSteen Hegelund if (vcap_is_chain_used(vctrl, ndev, src_cid)) 2954cfd9e7b7SSteen Hegelund return -EADDRNOTAVAIL; 2955cfd9e7b7SSteen Hegelund err = vcap_enable(vctrl, ndev, cookie, src_cid, dst_cid); 295667456717SSteen Hegelund } else { 2957cfd9e7b7SSteen Hegelund err = vcap_disable(vctrl, ndev, cookie); 295867456717SSteen Hegelund } 295967456717SSteen Hegelund 2960cfd9e7b7SSteen Hegelund return err; 296167456717SSteen Hegelund } 296267456717SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_enable_lookups); 296367456717SSteen Hegelund 2964784c3067SSteen Hegelund /* Is this chain id the last lookup of all VCAPs */ 2965784c3067SSteen Hegelund bool vcap_is_last_chain(struct vcap_control *vctrl, int cid) 2966784c3067SSteen Hegelund { 2967784c3067SSteen Hegelund struct vcap_admin *admin; 2968784c3067SSteen Hegelund int lookup; 2969784c3067SSteen Hegelund 2970784c3067SSteen Hegelund if (vcap_api_check(vctrl)) 2971784c3067SSteen Hegelund return false; 2972784c3067SSteen Hegelund 2973784c3067SSteen Hegelund admin = vcap_find_admin(vctrl, cid); 2974784c3067SSteen Hegelund if (!admin) 2975784c3067SSteen Hegelund return false; 2976784c3067SSteen Hegelund 2977784c3067SSteen Hegelund /* This must be the last lookup in this VCAP type */ 2978784c3067SSteen Hegelund lookup = vcap_chain_id_to_lookup(admin, cid); 2979784c3067SSteen Hegelund return lookup == admin->lookups - 1; 2980784c3067SSteen Hegelund } 2981784c3067SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_is_last_chain); 2982784c3067SSteen Hegelund 2983f13230a4SSteen Hegelund /* Set a rule counter id (for certain vcaps only) */ 2984f13230a4SSteen Hegelund void vcap_rule_set_counter_id(struct vcap_rule *rule, u32 counter_id) 2985f13230a4SSteen Hegelund { 2986f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2987f13230a4SSteen Hegelund 2988f13230a4SSteen Hegelund ri->counter_id = counter_id; 2989f13230a4SSteen Hegelund } 2990f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_set_counter_id); 2991f13230a4SSteen Hegelund 299240e7fe18SSteen Hegelund /* Provide all rules via a callback interface */ 299340e7fe18SSteen Hegelund int vcap_rule_iter(struct vcap_control *vctrl, 299440e7fe18SSteen Hegelund int (*callback)(void *, struct vcap_rule *), void *arg) 299540e7fe18SSteen Hegelund { 299640e7fe18SSteen Hegelund struct vcap_rule_internal *ri; 299740e7fe18SSteen Hegelund struct vcap_admin *admin; 299840e7fe18SSteen Hegelund int ret; 299940e7fe18SSteen Hegelund 300040e7fe18SSteen Hegelund ret = vcap_api_check(vctrl); 300140e7fe18SSteen Hegelund if (ret) 300240e7fe18SSteen Hegelund return ret; 300340e7fe18SSteen Hegelund 300440e7fe18SSteen Hegelund /* Iterate all rules in each VCAP instance */ 300540e7fe18SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 300640e7fe18SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) { 300740e7fe18SSteen Hegelund ret = callback(arg, &ri->data); 300840e7fe18SSteen Hegelund if (ret) 300940e7fe18SSteen Hegelund return ret; 301040e7fe18SSteen Hegelund } 301140e7fe18SSteen Hegelund } 301240e7fe18SSteen Hegelund 301340e7fe18SSteen Hegelund return 0; 301440e7fe18SSteen Hegelund } 301540e7fe18SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_iter); 301640e7fe18SSteen Hegelund 3017f13230a4SSteen Hegelund int vcap_rule_set_counter(struct vcap_rule *rule, struct vcap_counter *ctr) 3018f13230a4SSteen Hegelund { 3019f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 3020f13230a4SSteen Hegelund int err; 3021f13230a4SSteen Hegelund 3022f13230a4SSteen Hegelund err = vcap_api_check(ri->vctrl); 3023f13230a4SSteen Hegelund if (err) 3024f13230a4SSteen Hegelund return err; 3025f13230a4SSteen Hegelund if (!ctr) { 3026f13230a4SSteen Hegelund pr_err("%s:%d: counter is missing\n", __func__, __LINE__); 3027f13230a4SSteen Hegelund return -EINVAL; 3028f13230a4SSteen Hegelund } 3029f13230a4SSteen Hegelund return vcap_write_counter(ri, ctr); 3030f13230a4SSteen Hegelund } 3031f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_set_counter); 3032f13230a4SSteen Hegelund 3033f13230a4SSteen Hegelund int vcap_rule_get_counter(struct vcap_rule *rule, struct vcap_counter *ctr) 3034f13230a4SSteen Hegelund { 3035f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 3036f13230a4SSteen Hegelund int err; 3037f13230a4SSteen Hegelund 3038f13230a4SSteen Hegelund err = vcap_api_check(ri->vctrl); 3039f13230a4SSteen Hegelund if (err) 3040f13230a4SSteen Hegelund return err; 3041f13230a4SSteen Hegelund if (!ctr) { 3042f13230a4SSteen Hegelund pr_err("%s:%d: counter is missing\n", __func__, __LINE__); 3043f13230a4SSteen Hegelund return -EINVAL; 3044f13230a4SSteen Hegelund } 3045f13230a4SSteen Hegelund return vcap_read_counter(ri, ctr); 3046f13230a4SSteen Hegelund } 3047f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_get_counter); 3048f13230a4SSteen Hegelund 3049*18a15c76SSteen Hegelund /* Get a copy of a client key field */ 3050*18a15c76SSteen Hegelund static int vcap_rule_get_key(struct vcap_rule *rule, 3051*18a15c76SSteen Hegelund enum vcap_key_field key, 3052*18a15c76SSteen Hegelund struct vcap_client_keyfield *ckf) 3053*18a15c76SSteen Hegelund { 3054*18a15c76SSteen Hegelund struct vcap_client_keyfield *field; 3055*18a15c76SSteen Hegelund 3056*18a15c76SSteen Hegelund field = vcap_find_keyfield(rule, key); 3057*18a15c76SSteen Hegelund if (!field) 3058*18a15c76SSteen Hegelund return -EINVAL; 3059*18a15c76SSteen Hegelund memcpy(ckf, field, sizeof(*ckf)); 3060*18a15c76SSteen Hegelund INIT_LIST_HEAD(&ckf->ctrl.list); 3061*18a15c76SSteen Hegelund return 0; 3062*18a15c76SSteen Hegelund } 3063*18a15c76SSteen Hegelund 3064*18a15c76SSteen Hegelund /* Get the keysets that matches the rule key type/mask */ 3065*18a15c76SSteen Hegelund int vcap_rule_get_keysets(struct vcap_rule_internal *ri, 3066*18a15c76SSteen Hegelund struct vcap_keyset_list *matches) 3067*18a15c76SSteen Hegelund { 3068*18a15c76SSteen Hegelund struct vcap_control *vctrl = ri->vctrl; 3069*18a15c76SSteen Hegelund enum vcap_type vt = ri->admin->vtype; 3070*18a15c76SSteen Hegelund const struct vcap_set *keyfield_set; 3071*18a15c76SSteen Hegelund struct vcap_client_keyfield kf = {}; 3072*18a15c76SSteen Hegelund u32 value, mask; 3073*18a15c76SSteen Hegelund int err, idx; 3074*18a15c76SSteen Hegelund 3075*18a15c76SSteen Hegelund err = vcap_rule_get_key(&ri->data, VCAP_KF_TYPE, &kf); 3076*18a15c76SSteen Hegelund if (err) 3077*18a15c76SSteen Hegelund return err; 3078*18a15c76SSteen Hegelund 3079*18a15c76SSteen Hegelund if (kf.ctrl.type == VCAP_FIELD_BIT) { 3080*18a15c76SSteen Hegelund value = kf.data.u1.value; 3081*18a15c76SSteen Hegelund mask = kf.data.u1.mask; 3082*18a15c76SSteen Hegelund } else if (kf.ctrl.type == VCAP_FIELD_U32) { 3083*18a15c76SSteen Hegelund value = kf.data.u32.value; 3084*18a15c76SSteen Hegelund mask = kf.data.u32.mask; 3085*18a15c76SSteen Hegelund } else { 3086*18a15c76SSteen Hegelund return -EINVAL; 3087*18a15c76SSteen Hegelund } 3088*18a15c76SSteen Hegelund 3089*18a15c76SSteen Hegelund keyfield_set = vctrl->vcaps[vt].keyfield_set; 3090*18a15c76SSteen Hegelund for (idx = 0; idx < vctrl->vcaps[vt].keyfield_set_size; ++idx) { 3091*18a15c76SSteen Hegelund if (keyfield_set[idx].sw_per_item != ri->keyset_sw) 3092*18a15c76SSteen Hegelund continue; 3093*18a15c76SSteen Hegelund 3094*18a15c76SSteen Hegelund if (keyfield_set[idx].type_id == (u8)-1) { 3095*18a15c76SSteen Hegelund vcap_keyset_list_add(matches, idx); 3096*18a15c76SSteen Hegelund continue; 3097*18a15c76SSteen Hegelund } 3098*18a15c76SSteen Hegelund 3099*18a15c76SSteen Hegelund if ((keyfield_set[idx].type_id & mask) == value) 3100*18a15c76SSteen Hegelund vcap_keyset_list_add(matches, idx); 3101*18a15c76SSteen Hegelund } 3102*18a15c76SSteen Hegelund if (matches->cnt > 0) 3103*18a15c76SSteen Hegelund return 0; 3104*18a15c76SSteen Hegelund 3105*18a15c76SSteen Hegelund return -EINVAL; 3106*18a15c76SSteen Hegelund } 3107*18a15c76SSteen Hegelund 3108465a38a2SSteen Hegelund static int vcap_rule_mod_key(struct vcap_rule *rule, 3109465a38a2SSteen Hegelund enum vcap_key_field key, 3110465a38a2SSteen Hegelund enum vcap_field_type ftype, 3111465a38a2SSteen Hegelund struct vcap_client_keyfield_data *data) 3112465a38a2SSteen Hegelund { 3113465a38a2SSteen Hegelund struct vcap_client_keyfield *field; 3114465a38a2SSteen Hegelund 3115465a38a2SSteen Hegelund field = vcap_find_keyfield(rule, key); 3116465a38a2SSteen Hegelund if (!field) 3117465a38a2SSteen Hegelund return vcap_rule_add_key(rule, key, ftype, data); 311833e3a273SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 3119465a38a2SSteen Hegelund return 0; 3120465a38a2SSteen Hegelund } 3121465a38a2SSteen Hegelund 3122465a38a2SSteen Hegelund /* Modify a 32 bit key field with value and mask in the rule */ 3123465a38a2SSteen Hegelund int vcap_rule_mod_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 3124465a38a2SSteen Hegelund u32 value, u32 mask) 3125465a38a2SSteen Hegelund { 3126465a38a2SSteen Hegelund struct vcap_client_keyfield_data data; 3127465a38a2SSteen Hegelund 3128465a38a2SSteen Hegelund data.u32.value = value; 3129465a38a2SSteen Hegelund data.u32.mask = mask; 3130465a38a2SSteen Hegelund return vcap_rule_mod_key(rule, key, VCAP_FIELD_U32, &data); 3131465a38a2SSteen Hegelund } 3132465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_mod_key_u32); 3133465a38a2SSteen Hegelund 3134465a38a2SSteen Hegelund static int vcap_rule_mod_action(struct vcap_rule *rule, 3135465a38a2SSteen Hegelund enum vcap_action_field action, 3136465a38a2SSteen Hegelund enum vcap_field_type ftype, 3137465a38a2SSteen Hegelund struct vcap_client_actionfield_data *data) 3138465a38a2SSteen Hegelund { 3139465a38a2SSteen Hegelund struct vcap_client_actionfield *field; 3140465a38a2SSteen Hegelund 3141465a38a2SSteen Hegelund field = vcap_find_actionfield(rule, action); 3142465a38a2SSteen Hegelund if (!field) 3143465a38a2SSteen Hegelund return vcap_rule_add_action(rule, action, ftype, data); 314433e3a273SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 3145465a38a2SSteen Hegelund return 0; 3146465a38a2SSteen Hegelund } 3147465a38a2SSteen Hegelund 3148465a38a2SSteen Hegelund /* Modify a 32 bit action field with value in the rule */ 3149465a38a2SSteen Hegelund int vcap_rule_mod_action_u32(struct vcap_rule *rule, 3150465a38a2SSteen Hegelund enum vcap_action_field action, 3151465a38a2SSteen Hegelund u32 value) 3152465a38a2SSteen Hegelund { 3153465a38a2SSteen Hegelund struct vcap_client_actionfield_data data; 3154465a38a2SSteen Hegelund 3155465a38a2SSteen Hegelund data.u32.value = value; 3156465a38a2SSteen Hegelund return vcap_rule_mod_action(rule, action, VCAP_FIELD_U32, &data); 3157465a38a2SSteen Hegelund } 3158465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_mod_action_u32); 3159465a38a2SSteen Hegelund 3160465a38a2SSteen Hegelund /* Drop keys in a keylist and any keys that are not supported by the keyset */ 3161465a38a2SSteen Hegelund int vcap_filter_rule_keys(struct vcap_rule *rule, 3162465a38a2SSteen Hegelund enum vcap_key_field keylist[], int length, 3163465a38a2SSteen Hegelund bool drop_unsupported) 3164465a38a2SSteen Hegelund { 3165465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 3166465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf, *next_ckf; 3167465a38a2SSteen Hegelund const struct vcap_field *fields; 3168465a38a2SSteen Hegelund enum vcap_key_field key; 3169465a38a2SSteen Hegelund int err = 0; 3170465a38a2SSteen Hegelund int idx; 3171465a38a2SSteen Hegelund 3172465a38a2SSteen Hegelund if (length > 0) { 3173465a38a2SSteen Hegelund err = -EEXIST; 3174465a38a2SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, 3175465a38a2SSteen Hegelund &ri->data.keyfields, ctrl.list) { 3176465a38a2SSteen Hegelund key = ckf->ctrl.key; 3177465a38a2SSteen Hegelund for (idx = 0; idx < length; ++idx) 3178465a38a2SSteen Hegelund if (key == keylist[idx]) { 3179465a38a2SSteen Hegelund list_del(&ckf->ctrl.list); 3180465a38a2SSteen Hegelund kfree(ckf); 3181465a38a2SSteen Hegelund idx++; 3182465a38a2SSteen Hegelund err = 0; 3183465a38a2SSteen Hegelund } 3184465a38a2SSteen Hegelund } 3185465a38a2SSteen Hegelund } 3186465a38a2SSteen Hegelund if (drop_unsupported) { 3187465a38a2SSteen Hegelund err = -EEXIST; 3188465a38a2SSteen Hegelund fields = vcap_keyfields(ri->vctrl, ri->admin->vtype, 3189465a38a2SSteen Hegelund rule->keyset); 3190465a38a2SSteen Hegelund if (!fields) 3191465a38a2SSteen Hegelund return err; 3192465a38a2SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, 3193465a38a2SSteen Hegelund &ri->data.keyfields, ctrl.list) { 3194465a38a2SSteen Hegelund key = ckf->ctrl.key; 3195465a38a2SSteen Hegelund if (fields[key].width == 0) { 3196465a38a2SSteen Hegelund list_del(&ckf->ctrl.list); 3197465a38a2SSteen Hegelund kfree(ckf); 3198465a38a2SSteen Hegelund err = 0; 3199465a38a2SSteen Hegelund } 3200465a38a2SSteen Hegelund } 3201465a38a2SSteen Hegelund } 3202465a38a2SSteen Hegelund return err; 3203465a38a2SSteen Hegelund } 3204465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_filter_rule_keys); 3205465a38a2SSteen Hegelund 3206465a38a2SSteen Hegelund /* Make a full copy of an existing rule with a new rule id */ 3207465a38a2SSteen Hegelund struct vcap_rule *vcap_copy_rule(struct vcap_rule *erule) 3208465a38a2SSteen Hegelund { 3209465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(erule); 3210465a38a2SSteen Hegelund struct vcap_client_actionfield *caf; 3211465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf; 3212465a38a2SSteen Hegelund struct vcap_rule *rule; 3213465a38a2SSteen Hegelund int err; 3214465a38a2SSteen Hegelund 3215465a38a2SSteen Hegelund err = vcap_api_check(ri->vctrl); 3216465a38a2SSteen Hegelund if (err) 3217465a38a2SSteen Hegelund return ERR_PTR(err); 3218465a38a2SSteen Hegelund 3219465a38a2SSteen Hegelund rule = vcap_alloc_rule(ri->vctrl, ri->ndev, ri->data.vcap_chain_id, 3220465a38a2SSteen Hegelund ri->data.user, ri->data.priority, 0); 3221465a38a2SSteen Hegelund if (IS_ERR(rule)) 3222465a38a2SSteen Hegelund return rule; 3223465a38a2SSteen Hegelund 3224465a38a2SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) { 3225465a38a2SSteen Hegelund /* Add a key duplicate in the new rule */ 3226465a38a2SSteen Hegelund err = vcap_rule_add_key(rule, 3227465a38a2SSteen Hegelund ckf->ctrl.key, 3228465a38a2SSteen Hegelund ckf->ctrl.type, 3229465a38a2SSteen Hegelund &ckf->data); 3230465a38a2SSteen Hegelund if (err) 3231465a38a2SSteen Hegelund goto err; 3232465a38a2SSteen Hegelund } 3233465a38a2SSteen Hegelund 3234465a38a2SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) { 3235465a38a2SSteen Hegelund /* Add a action duplicate in the new rule */ 3236465a38a2SSteen Hegelund err = vcap_rule_add_action(rule, 3237465a38a2SSteen Hegelund caf->ctrl.action, 3238465a38a2SSteen Hegelund caf->ctrl.type, 3239465a38a2SSteen Hegelund &caf->data); 3240465a38a2SSteen Hegelund if (err) 3241465a38a2SSteen Hegelund goto err; 3242465a38a2SSteen Hegelund } 3243465a38a2SSteen Hegelund return rule; 3244465a38a2SSteen Hegelund err: 3245465a38a2SSteen Hegelund vcap_free_rule(rule); 3246465a38a2SSteen Hegelund return ERR_PTR(err); 3247465a38a2SSteen Hegelund } 3248465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_copy_rule); 3249465a38a2SSteen Hegelund 325067d63751SSteen Hegelund #ifdef CONFIG_VCAP_KUNIT_TEST 325167d63751SSteen Hegelund #include "vcap_api_kunit.c" 325267d63751SSteen Hegelund #endif 3253