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 923975d86acSSteen Hegelund /* Check if a rule with this id exists */ 924975d86acSSteen Hegelund static bool vcap_rule_exists(struct vcap_control *vctrl, u32 id) 925975d86acSSteen Hegelund { 926975d86acSSteen Hegelund struct vcap_rule_internal *ri; 927975d86acSSteen Hegelund struct vcap_admin *admin; 928975d86acSSteen Hegelund 929975d86acSSteen Hegelund /* Look for the rule id in all vcaps */ 930975d86acSSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 931975d86acSSteen Hegelund list_for_each_entry(ri, &admin->rules, list) 932975d86acSSteen Hegelund if (ri->data.id == id) 933975d86acSSteen Hegelund return true; 934975d86acSSteen Hegelund return false; 935975d86acSSteen Hegelund } 936975d86acSSteen Hegelund 937*1972b6d9SSteen Hegelund /* Find a rule with a provided rule id return a locked vcap */ 938*1972b6d9SSteen Hegelund static struct vcap_rule_internal * 939*1972b6d9SSteen Hegelund vcap_get_locked_rule(struct vcap_control *vctrl, u32 id) 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 */ 945*1972b6d9SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 946*1972b6d9SSteen Hegelund mutex_lock(&admin->lock); 947c9da1ac1SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) 948c9da1ac1SSteen Hegelund if (ri->data.id == id) 949c9da1ac1SSteen Hegelund return ri; 950*1972b6d9SSteen Hegelund mutex_unlock(&admin->lock); 951*1972b6d9SSteen Hegelund } 952c9da1ac1SSteen Hegelund return NULL; 953c9da1ac1SSteen Hegelund } 954c9da1ac1SSteen Hegelund 955c9da1ac1SSteen Hegelund /* Find a rule id with a provided cookie */ 956c9da1ac1SSteen Hegelund int vcap_lookup_rule_by_cookie(struct vcap_control *vctrl, u64 cookie) 957c9da1ac1SSteen Hegelund { 958c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri; 959c9da1ac1SSteen Hegelund struct vcap_admin *admin; 960*1972b6d9SSteen Hegelund int id = 0; 961c9da1ac1SSteen Hegelund 962c9da1ac1SSteen Hegelund /* Look for the rule id in all vcaps */ 963*1972b6d9SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 964*1972b6d9SSteen Hegelund mutex_lock(&admin->lock); 965*1972b6d9SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) { 966*1972b6d9SSteen Hegelund if (ri->data.cookie == cookie) { 967*1972b6d9SSteen Hegelund id = ri->data.id; 968*1972b6d9SSteen Hegelund break; 969*1972b6d9SSteen Hegelund } 970*1972b6d9SSteen Hegelund } 971*1972b6d9SSteen Hegelund mutex_unlock(&admin->lock); 972*1972b6d9SSteen Hegelund if (id) 973*1972b6d9SSteen Hegelund return id; 974*1972b6d9SSteen Hegelund } 975c9da1ac1SSteen Hegelund return -ENOENT; 976c9da1ac1SSteen Hegelund } 977c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_lookup_rule_by_cookie); 978c9da1ac1SSteen Hegelund 979814e7693SSteen Hegelund /* Make a copy of the rule, shallow or full */ 980814e7693SSteen Hegelund static struct vcap_rule_internal *vcap_dup_rule(struct vcap_rule_internal *ri, 981814e7693SSteen Hegelund bool full) 9828e10490bSSteen Hegelund { 983814e7693SSteen Hegelund struct vcap_client_actionfield *caf, *newcaf; 984814e7693SSteen Hegelund struct vcap_client_keyfield *ckf, *newckf; 9858e10490bSSteen Hegelund struct vcap_rule_internal *duprule; 9868e10490bSSteen Hegelund 9878e10490bSSteen Hegelund /* Allocate the client part */ 9888e10490bSSteen Hegelund duprule = kzalloc(sizeof(*duprule), GFP_KERNEL); 9898e10490bSSteen Hegelund if (!duprule) 9908e10490bSSteen Hegelund return ERR_PTR(-ENOMEM); 9918e10490bSSteen Hegelund *duprule = *ri; 9928e10490bSSteen Hegelund /* Not inserted in the VCAP */ 9938e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->list); 9948e10490bSSteen Hegelund /* No elements in these lists */ 9958e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->data.keyfields); 9968e10490bSSteen Hegelund INIT_LIST_HEAD(&duprule->data.actionfields); 997814e7693SSteen Hegelund 998814e7693SSteen Hegelund /* A full rule copy includes keys and actions */ 999814e7693SSteen Hegelund if (!full) 1000814e7693SSteen Hegelund return duprule; 1001814e7693SSteen Hegelund 1002814e7693SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) { 1003814e7693SSteen Hegelund newckf = kzalloc(sizeof(*newckf), GFP_KERNEL); 1004814e7693SSteen Hegelund if (!newckf) 1005814e7693SSteen Hegelund return ERR_PTR(-ENOMEM); 1006814e7693SSteen Hegelund memcpy(newckf, ckf, sizeof(*newckf)); 1007814e7693SSteen Hegelund list_add_tail(&newckf->ctrl.list, &duprule->data.keyfields); 1008814e7693SSteen Hegelund } 1009814e7693SSteen Hegelund 1010814e7693SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) { 1011814e7693SSteen Hegelund newcaf = kzalloc(sizeof(*newcaf), GFP_KERNEL); 1012814e7693SSteen Hegelund if (!newcaf) 1013814e7693SSteen Hegelund return ERR_PTR(-ENOMEM); 1014814e7693SSteen Hegelund memcpy(newcaf, caf, sizeof(*newcaf)); 1015814e7693SSteen Hegelund list_add_tail(&newcaf->ctrl.list, &duprule->data.actionfields); 1016814e7693SSteen Hegelund } 1017814e7693SSteen Hegelund 10188e10490bSSteen Hegelund return duprule; 10198e10490bSSteen Hegelund } 10208e10490bSSteen Hegelund 1021610c32b2SHoratiu Vultur static void vcap_apply_width(u8 *dst, int width, int bytes) 1022610c32b2SHoratiu Vultur { 1023610c32b2SHoratiu Vultur u8 bmask; 1024610c32b2SHoratiu Vultur int idx; 1025610c32b2SHoratiu Vultur 1026610c32b2SHoratiu Vultur for (idx = 0; idx < bytes; idx++) { 1027610c32b2SHoratiu Vultur if (width > 0) 1028610c32b2SHoratiu Vultur if (width < 8) 1029610c32b2SHoratiu Vultur bmask = (1 << width) - 1; 1030610c32b2SHoratiu Vultur else 1031610c32b2SHoratiu Vultur bmask = ~0; 1032610c32b2SHoratiu Vultur else 1033610c32b2SHoratiu Vultur bmask = 0; 1034610c32b2SHoratiu Vultur dst[idx] &= bmask; 1035610c32b2SHoratiu Vultur width -= 8; 1036610c32b2SHoratiu Vultur } 1037610c32b2SHoratiu Vultur } 1038610c32b2SHoratiu Vultur 1039610c32b2SHoratiu Vultur static void vcap_copy_from_w32be(u8 *dst, u8 *src, int size, int width) 1040610c32b2SHoratiu Vultur { 1041610c32b2SHoratiu Vultur int idx, ridx, wstart, nidx; 1042610c32b2SHoratiu Vultur int tail_bytes = (((size + 4) >> 2) << 2) - size; 1043610c32b2SHoratiu Vultur 1044610c32b2SHoratiu Vultur for (idx = 0, ridx = size - 1; idx < size; ++idx, --ridx) { 1045610c32b2SHoratiu Vultur wstart = (idx >> 2) << 2; 1046610c32b2SHoratiu Vultur nidx = wstart + 3 - (idx & 0x3); 1047610c32b2SHoratiu Vultur if (nidx >= size) 1048610c32b2SHoratiu Vultur nidx -= tail_bytes; 1049610c32b2SHoratiu Vultur dst[nidx] = src[ridx]; 1050610c32b2SHoratiu Vultur } 1051610c32b2SHoratiu Vultur 1052610c32b2SHoratiu Vultur vcap_apply_width(dst, width, size); 1053610c32b2SHoratiu Vultur } 1054610c32b2SHoratiu Vultur 1055610c32b2SHoratiu Vultur static void vcap_copy_action_bit_field(struct vcap_u1_action *field, u8 *value) 1056610c32b2SHoratiu Vultur { 1057610c32b2SHoratiu Vultur field->value = (*value) & 0x1; 1058610c32b2SHoratiu Vultur } 1059610c32b2SHoratiu Vultur 1060610c32b2SHoratiu Vultur static void vcap_copy_limited_actionfield(u8 *dstvalue, u8 *srcvalue, 1061610c32b2SHoratiu Vultur int width, int bytes) 1062610c32b2SHoratiu Vultur { 1063610c32b2SHoratiu Vultur memcpy(dstvalue, srcvalue, bytes); 1064610c32b2SHoratiu Vultur vcap_apply_width(dstvalue, width, bytes); 1065610c32b2SHoratiu Vultur } 1066610c32b2SHoratiu Vultur 1067610c32b2SHoratiu Vultur static void vcap_copy_to_client_actionfield(struct vcap_rule_internal *ri, 1068610c32b2SHoratiu Vultur struct vcap_client_actionfield *field, 1069610c32b2SHoratiu Vultur u8 *value, u16 width) 1070610c32b2SHoratiu Vultur { 1071610c32b2SHoratiu Vultur int field_size = actionfield_size_table[field->ctrl.type]; 1072610c32b2SHoratiu Vultur 1073610c32b2SHoratiu Vultur if (ri->admin->w32be) { 1074610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1075610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1076610c32b2SHoratiu Vultur vcap_copy_action_bit_field(&field->data.u1, value); 1077610c32b2SHoratiu Vultur break; 1078610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1079610c32b2SHoratiu Vultur vcap_copy_limited_actionfield((u8 *)&field->data.u32.value, 1080610c32b2SHoratiu Vultur value, 1081610c32b2SHoratiu Vultur width, field_size); 1082610c32b2SHoratiu Vultur break; 1083610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1084610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.value, value, 1085610c32b2SHoratiu Vultur field_size, width); 1086610c32b2SHoratiu Vultur break; 1087610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1088610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.value, value, 1089610c32b2SHoratiu Vultur field_size, width); 1090610c32b2SHoratiu Vultur break; 1091610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1092610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.value, value, 1093610c32b2SHoratiu Vultur field_size, width); 1094610c32b2SHoratiu Vultur break; 1095610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1096610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.value, value, 1097610c32b2SHoratiu Vultur field_size, width); 1098610c32b2SHoratiu Vultur break; 1099610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1100610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.value, value, 1101610c32b2SHoratiu Vultur field_size, width); 1102610c32b2SHoratiu Vultur break; 1103610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1104610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.value, value, 1105610c32b2SHoratiu Vultur field_size, width); 1106610c32b2SHoratiu Vultur break; 1107610c32b2SHoratiu Vultur }; 1108610c32b2SHoratiu Vultur } else { 1109610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1110610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1111610c32b2SHoratiu Vultur vcap_copy_action_bit_field(&field->data.u1, value); 1112610c32b2SHoratiu Vultur break; 1113610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1114610c32b2SHoratiu Vultur vcap_copy_limited_actionfield((u8 *)&field->data.u32.value, 1115610c32b2SHoratiu Vultur value, 1116610c32b2SHoratiu Vultur width, field_size); 1117610c32b2SHoratiu Vultur break; 1118610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1119610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u48.value, 1120610c32b2SHoratiu Vultur value, 1121610c32b2SHoratiu Vultur width, field_size); 1122610c32b2SHoratiu Vultur break; 1123610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1124610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u56.value, 1125610c32b2SHoratiu Vultur value, 1126610c32b2SHoratiu Vultur width, field_size); 1127610c32b2SHoratiu Vultur break; 1128610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1129610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u64.value, 1130610c32b2SHoratiu Vultur value, 1131610c32b2SHoratiu Vultur width, field_size); 1132610c32b2SHoratiu Vultur break; 1133610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1134610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u72.value, 1135610c32b2SHoratiu Vultur value, 1136610c32b2SHoratiu Vultur width, field_size); 1137610c32b2SHoratiu Vultur break; 1138610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1139610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u112.value, 1140610c32b2SHoratiu Vultur value, 1141610c32b2SHoratiu Vultur width, field_size); 1142610c32b2SHoratiu Vultur break; 1143610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1144610c32b2SHoratiu Vultur vcap_copy_limited_actionfield(field->data.u128.value, 1145610c32b2SHoratiu Vultur value, 1146610c32b2SHoratiu Vultur width, field_size); 1147610c32b2SHoratiu Vultur break; 1148610c32b2SHoratiu Vultur }; 1149610c32b2SHoratiu Vultur } 1150610c32b2SHoratiu Vultur } 1151610c32b2SHoratiu Vultur 1152610c32b2SHoratiu Vultur static void vcap_copy_key_bit_field(struct vcap_u1_key *field, 1153610c32b2SHoratiu Vultur u8 *value, u8 *mask) 1154610c32b2SHoratiu Vultur { 1155610c32b2SHoratiu Vultur field->value = (*value) & 0x1; 1156610c32b2SHoratiu Vultur field->mask = (*mask) & 0x1; 1157610c32b2SHoratiu Vultur } 1158610c32b2SHoratiu Vultur 1159610c32b2SHoratiu Vultur static void vcap_copy_limited_keyfield(u8 *dstvalue, u8 *dstmask, 1160610c32b2SHoratiu Vultur u8 *srcvalue, u8 *srcmask, 1161610c32b2SHoratiu Vultur int width, int bytes) 1162610c32b2SHoratiu Vultur { 1163610c32b2SHoratiu Vultur memcpy(dstvalue, srcvalue, bytes); 1164610c32b2SHoratiu Vultur vcap_apply_width(dstvalue, width, bytes); 1165610c32b2SHoratiu Vultur memcpy(dstmask, srcmask, bytes); 1166610c32b2SHoratiu Vultur vcap_apply_width(dstmask, width, bytes); 1167610c32b2SHoratiu Vultur } 1168610c32b2SHoratiu Vultur 1169610c32b2SHoratiu Vultur static void vcap_copy_to_client_keyfield(struct vcap_rule_internal *ri, 1170610c32b2SHoratiu Vultur struct vcap_client_keyfield *field, 1171610c32b2SHoratiu Vultur u8 *value, u8 *mask, u16 width) 1172610c32b2SHoratiu Vultur { 1173610c32b2SHoratiu Vultur int field_size = keyfield_size_table[field->ctrl.type] / 2; 1174610c32b2SHoratiu Vultur 1175610c32b2SHoratiu Vultur if (ri->admin->w32be) { 1176610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1177610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1178610c32b2SHoratiu Vultur vcap_copy_key_bit_field(&field->data.u1, value, mask); 1179610c32b2SHoratiu Vultur break; 1180610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1181610c32b2SHoratiu Vultur vcap_copy_limited_keyfield((u8 *)&field->data.u32.value, 1182610c32b2SHoratiu Vultur (u8 *)&field->data.u32.mask, 1183610c32b2SHoratiu Vultur value, mask, 1184610c32b2SHoratiu Vultur width, field_size); 1185610c32b2SHoratiu Vultur break; 1186610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1187610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.value, value, 1188610c32b2SHoratiu Vultur field_size, width); 1189610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u48.mask, mask, 1190610c32b2SHoratiu Vultur field_size, width); 1191610c32b2SHoratiu Vultur break; 1192610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1193610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.value, value, 1194610c32b2SHoratiu Vultur field_size, width); 1195610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u56.mask, mask, 1196610c32b2SHoratiu Vultur field_size, width); 1197610c32b2SHoratiu Vultur break; 1198610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1199610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.value, value, 1200610c32b2SHoratiu Vultur field_size, width); 1201610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u64.mask, mask, 1202610c32b2SHoratiu Vultur field_size, width); 1203610c32b2SHoratiu Vultur break; 1204610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1205610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.value, value, 1206610c32b2SHoratiu Vultur field_size, width); 1207610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u72.mask, mask, 1208610c32b2SHoratiu Vultur field_size, width); 1209610c32b2SHoratiu Vultur break; 1210610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1211610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.value, value, 1212610c32b2SHoratiu Vultur field_size, width); 1213610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u112.mask, mask, 1214610c32b2SHoratiu Vultur field_size, width); 1215610c32b2SHoratiu Vultur break; 1216610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1217610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.value, value, 1218610c32b2SHoratiu Vultur field_size, width); 1219610c32b2SHoratiu Vultur vcap_copy_from_w32be(field->data.u128.mask, mask, 1220610c32b2SHoratiu Vultur field_size, width); 1221610c32b2SHoratiu Vultur break; 1222610c32b2SHoratiu Vultur }; 1223610c32b2SHoratiu Vultur } else { 1224610c32b2SHoratiu Vultur switch (field->ctrl.type) { 1225610c32b2SHoratiu Vultur case VCAP_FIELD_BIT: 1226610c32b2SHoratiu Vultur vcap_copy_key_bit_field(&field->data.u1, value, mask); 1227610c32b2SHoratiu Vultur break; 1228610c32b2SHoratiu Vultur case VCAP_FIELD_U32: 1229610c32b2SHoratiu Vultur vcap_copy_limited_keyfield((u8 *)&field->data.u32.value, 1230610c32b2SHoratiu Vultur (u8 *)&field->data.u32.mask, 1231610c32b2SHoratiu Vultur value, mask, 1232610c32b2SHoratiu Vultur width, field_size); 1233610c32b2SHoratiu Vultur break; 1234610c32b2SHoratiu Vultur case VCAP_FIELD_U48: 1235610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u48.value, 1236610c32b2SHoratiu Vultur field->data.u48.mask, 1237610c32b2SHoratiu Vultur value, mask, 1238610c32b2SHoratiu Vultur width, field_size); 1239610c32b2SHoratiu Vultur break; 1240610c32b2SHoratiu Vultur case VCAP_FIELD_U56: 1241610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u56.value, 1242610c32b2SHoratiu Vultur field->data.u56.mask, 1243610c32b2SHoratiu Vultur value, mask, 1244610c32b2SHoratiu Vultur width, field_size); 1245610c32b2SHoratiu Vultur break; 1246610c32b2SHoratiu Vultur case VCAP_FIELD_U64: 1247610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u64.value, 1248610c32b2SHoratiu Vultur field->data.u64.mask, 1249610c32b2SHoratiu Vultur value, mask, 1250610c32b2SHoratiu Vultur width, field_size); 1251610c32b2SHoratiu Vultur break; 1252610c32b2SHoratiu Vultur case VCAP_FIELD_U72: 1253610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u72.value, 1254610c32b2SHoratiu Vultur field->data.u72.mask, 1255610c32b2SHoratiu Vultur value, mask, 1256610c32b2SHoratiu Vultur width, field_size); 1257610c32b2SHoratiu Vultur break; 1258610c32b2SHoratiu Vultur case VCAP_FIELD_U112: 1259610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u112.value, 1260610c32b2SHoratiu Vultur field->data.u112.mask, 1261610c32b2SHoratiu Vultur value, mask, 1262610c32b2SHoratiu Vultur width, field_size); 1263610c32b2SHoratiu Vultur break; 1264610c32b2SHoratiu Vultur case VCAP_FIELD_U128: 1265610c32b2SHoratiu Vultur vcap_copy_limited_keyfield(field->data.u128.value, 1266610c32b2SHoratiu Vultur field->data.u128.mask, 1267610c32b2SHoratiu Vultur value, mask, 1268610c32b2SHoratiu Vultur width, field_size); 1269610c32b2SHoratiu Vultur break; 1270610c32b2SHoratiu Vultur }; 1271610c32b2SHoratiu Vultur } 1272610c32b2SHoratiu Vultur } 1273610c32b2SHoratiu Vultur 1274610c32b2SHoratiu Vultur static void vcap_rule_alloc_keyfield(struct vcap_rule_internal *ri, 1275610c32b2SHoratiu Vultur const struct vcap_field *keyfield, 1276610c32b2SHoratiu Vultur enum vcap_key_field key, 1277610c32b2SHoratiu Vultur u8 *value, u8 *mask) 1278610c32b2SHoratiu Vultur { 1279610c32b2SHoratiu Vultur struct vcap_client_keyfield *field; 1280610c32b2SHoratiu Vultur 1281610c32b2SHoratiu Vultur field = kzalloc(sizeof(*field), GFP_KERNEL); 1282610c32b2SHoratiu Vultur if (!field) 1283610c32b2SHoratiu Vultur return; 1284610c32b2SHoratiu Vultur INIT_LIST_HEAD(&field->ctrl.list); 1285610c32b2SHoratiu Vultur field->ctrl.key = key; 1286610c32b2SHoratiu Vultur field->ctrl.type = keyfield->type; 1287610c32b2SHoratiu Vultur vcap_copy_to_client_keyfield(ri, field, value, mask, keyfield->width); 1288610c32b2SHoratiu Vultur list_add_tail(&field->ctrl.list, &ri->data.keyfields); 1289610c32b2SHoratiu Vultur } 1290610c32b2SHoratiu Vultur 1291610c32b2SHoratiu Vultur /* Read key data from a VCAP address and discover if there is a rule keyset 1292610c32b2SHoratiu Vultur * here 1293610c32b2SHoratiu Vultur */ 1294610c32b2SHoratiu Vultur static bool 1295610c32b2SHoratiu Vultur vcap_verify_actionstream_actionset(struct vcap_control *vctrl, 1296610c32b2SHoratiu Vultur enum vcap_type vt, 1297610c32b2SHoratiu Vultur u32 *actionstream, 1298610c32b2SHoratiu Vultur enum vcap_actionfield_set actionset) 1299610c32b2SHoratiu Vultur { 1300610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1301610c32b2SHoratiu Vultur const struct vcap_field *fields; 1302610c32b2SHoratiu Vultur const struct vcap_set *info; 1303610c32b2SHoratiu Vultur 1304610c32b2SHoratiu Vultur if (vcap_actionfield_count(vctrl, vt, actionset) == 0) 1305610c32b2SHoratiu Vultur return false; 1306610c32b2SHoratiu Vultur 1307610c32b2SHoratiu Vultur info = vcap_actionfieldset(vctrl, vt, actionset); 1308610c32b2SHoratiu Vultur /* Check that the actionset is valid */ 1309610c32b2SHoratiu Vultur if (!info) 1310610c32b2SHoratiu Vultur return false; 1311610c32b2SHoratiu Vultur 1312610c32b2SHoratiu Vultur /* a type_id of value -1 means that there is no type field */ 1313610c32b2SHoratiu Vultur if (info->type_id == (u8)-1) 1314610c32b2SHoratiu Vultur return true; 1315610c32b2SHoratiu Vultur 1316610c32b2SHoratiu Vultur /* Get a valid typegroup for the specific actionset */ 1317610c32b2SHoratiu Vultur tgt = vcap_actionfield_typegroup(vctrl, vt, actionset); 1318610c32b2SHoratiu Vultur if (!tgt) 1319610c32b2SHoratiu Vultur return false; 1320610c32b2SHoratiu Vultur 1321610c32b2SHoratiu Vultur fields = vcap_actionfields(vctrl, vt, actionset); 1322610c32b2SHoratiu Vultur if (!fields) 1323610c32b2SHoratiu Vultur return false; 1324610c32b2SHoratiu Vultur 1325610c32b2SHoratiu Vultur /* Later this will be expanded with a check of the type id */ 1326610c32b2SHoratiu Vultur return true; 1327610c32b2SHoratiu Vultur } 1328610c32b2SHoratiu Vultur 1329610c32b2SHoratiu Vultur /* Find the subword width of the action typegroup that matches the stream data 1330610c32b2SHoratiu Vultur */ 1331610c32b2SHoratiu Vultur static int vcap_find_actionstream_typegroup_sw(struct vcap_control *vctrl, 1332610c32b2SHoratiu Vultur enum vcap_type vt, u32 *stream, 1333610c32b2SHoratiu Vultur int sw_max) 1334610c32b2SHoratiu Vultur { 1335610c32b2SHoratiu Vultur const struct vcap_typegroup **tgt; 1336610c32b2SHoratiu Vultur int sw_idx, res; 1337610c32b2SHoratiu Vultur 1338610c32b2SHoratiu Vultur tgt = vctrl->vcaps[vt].actionfield_set_typegroups; 1339610c32b2SHoratiu Vultur /* Try the longest subword match first */ 1340610c32b2SHoratiu Vultur for (sw_idx = vctrl->vcaps[vt].sw_count; sw_idx >= 0; sw_idx--) { 1341610c32b2SHoratiu Vultur if (!tgt[sw_idx]) 1342610c32b2SHoratiu Vultur continue; 1343610c32b2SHoratiu Vultur res = vcap_verify_typegroups(stream, vctrl->vcaps[vt].act_width, 1344610c32b2SHoratiu Vultur tgt[sw_idx], false, sw_max); 1345610c32b2SHoratiu Vultur if (res == 0) 1346610c32b2SHoratiu Vultur return sw_idx; 1347610c32b2SHoratiu Vultur } 1348610c32b2SHoratiu Vultur return -EINVAL; 1349610c32b2SHoratiu Vultur } 1350610c32b2SHoratiu Vultur 1351610c32b2SHoratiu Vultur /* Verify that the typegroup information, subword count, actionset and type id 1352610c32b2SHoratiu Vultur * are in sync and correct, return the actionset 1353610c32b2SHoratiu Vultur */ 1354610c32b2SHoratiu Vultur static enum vcap_actionfield_set 1355610c32b2SHoratiu Vultur vcap_find_actionstream_actionset(struct vcap_control *vctrl, 1356610c32b2SHoratiu Vultur enum vcap_type vt, 1357610c32b2SHoratiu Vultur u32 *stream, 1358610c32b2SHoratiu Vultur int sw_max) 1359610c32b2SHoratiu Vultur { 1360610c32b2SHoratiu Vultur const struct vcap_set *actionfield_set; 1361610c32b2SHoratiu Vultur int sw_count, idx; 1362610c32b2SHoratiu Vultur bool res; 1363610c32b2SHoratiu Vultur 1364610c32b2SHoratiu Vultur sw_count = vcap_find_actionstream_typegroup_sw(vctrl, vt, stream, 1365610c32b2SHoratiu Vultur sw_max); 1366610c32b2SHoratiu Vultur if (sw_count < 0) 1367610c32b2SHoratiu Vultur return sw_count; 1368610c32b2SHoratiu Vultur 1369610c32b2SHoratiu Vultur actionfield_set = vctrl->vcaps[vt].actionfield_set; 1370610c32b2SHoratiu Vultur for (idx = 0; idx < vctrl->vcaps[vt].actionfield_set_size; ++idx) { 1371610c32b2SHoratiu Vultur if (actionfield_set[idx].sw_per_item != sw_count) 1372610c32b2SHoratiu Vultur continue; 1373610c32b2SHoratiu Vultur 1374610c32b2SHoratiu Vultur res = vcap_verify_actionstream_actionset(vctrl, vt, 1375610c32b2SHoratiu Vultur stream, idx); 1376610c32b2SHoratiu Vultur if (res) 1377610c32b2SHoratiu Vultur return idx; 1378610c32b2SHoratiu Vultur } 1379610c32b2SHoratiu Vultur return -EINVAL; 1380610c32b2SHoratiu Vultur } 1381610c32b2SHoratiu Vultur 1382610c32b2SHoratiu Vultur /* Store action value in an element in a list for the client */ 1383610c32b2SHoratiu Vultur static void vcap_rule_alloc_actionfield(struct vcap_rule_internal *ri, 1384610c32b2SHoratiu Vultur const struct vcap_field *actionfield, 1385610c32b2SHoratiu Vultur enum vcap_action_field action, 1386610c32b2SHoratiu Vultur u8 *value) 1387610c32b2SHoratiu Vultur { 1388610c32b2SHoratiu Vultur struct vcap_client_actionfield *field; 1389610c32b2SHoratiu Vultur 1390610c32b2SHoratiu Vultur field = kzalloc(sizeof(*field), GFP_KERNEL); 1391610c32b2SHoratiu Vultur if (!field) 1392610c32b2SHoratiu Vultur return; 1393610c32b2SHoratiu Vultur INIT_LIST_HEAD(&field->ctrl.list); 1394610c32b2SHoratiu Vultur field->ctrl.action = action; 1395610c32b2SHoratiu Vultur field->ctrl.type = actionfield->type; 1396610c32b2SHoratiu Vultur vcap_copy_to_client_actionfield(ri, field, value, actionfield->width); 1397610c32b2SHoratiu Vultur list_add_tail(&field->ctrl.list, &ri->data.actionfields); 1398610c32b2SHoratiu Vultur } 1399610c32b2SHoratiu Vultur 1400610c32b2SHoratiu Vultur static int vcap_decode_actionset(struct vcap_rule_internal *ri) 1401610c32b2SHoratiu Vultur { 1402610c32b2SHoratiu Vultur struct vcap_control *vctrl = ri->vctrl; 1403610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1404610c32b2SHoratiu Vultur const struct vcap_field *actionfield; 1405610c32b2SHoratiu Vultur enum vcap_actionfield_set actionset; 1406610c32b2SHoratiu Vultur enum vcap_type vt = admin->vtype; 1407610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1408610c32b2SHoratiu Vultur struct vcap_stream_iter iter; 1409610c32b2SHoratiu Vultur int idx, res, actfield_count; 1410610c32b2SHoratiu Vultur u32 *actstream; 1411610c32b2SHoratiu Vultur u8 value[16]; 1412610c32b2SHoratiu Vultur 1413610c32b2SHoratiu Vultur actstream = admin->cache.actionstream; 1414610c32b2SHoratiu Vultur res = vcap_find_actionstream_actionset(vctrl, vt, actstream, 0); 1415610c32b2SHoratiu Vultur if (res < 0) { 1416610c32b2SHoratiu Vultur pr_err("%s:%d: could not find valid actionset: %d\n", 1417610c32b2SHoratiu Vultur __func__, __LINE__, res); 1418610c32b2SHoratiu Vultur return -EINVAL; 1419610c32b2SHoratiu Vultur } 1420610c32b2SHoratiu Vultur actionset = res; 1421610c32b2SHoratiu Vultur actfield_count = vcap_actionfield_count(vctrl, vt, actionset); 1422610c32b2SHoratiu Vultur actionfield = vcap_actionfields(vctrl, vt, actionset); 1423610c32b2SHoratiu Vultur tgt = vcap_actionfield_typegroup(vctrl, vt, actionset); 1424610c32b2SHoratiu Vultur /* Start decoding the stream */ 1425610c32b2SHoratiu Vultur for (idx = 0; idx < actfield_count; ++idx) { 1426610c32b2SHoratiu Vultur if (actionfield[idx].width <= 0) 1427610c32b2SHoratiu Vultur continue; 1428610c32b2SHoratiu Vultur /* Get the action */ 1429610c32b2SHoratiu Vultur memset(value, 0, DIV_ROUND_UP(actionfield[idx].width, 8)); 1430610c32b2SHoratiu Vultur vcap_iter_init(&iter, vctrl->vcaps[vt].act_width, tgt, 1431610c32b2SHoratiu Vultur actionfield[idx].offset); 1432610c32b2SHoratiu Vultur vcap_decode_field(actstream, &iter, actionfield[idx].width, 1433610c32b2SHoratiu Vultur value); 1434610c32b2SHoratiu Vultur /* Skip if no bits are set */ 1435610c32b2SHoratiu Vultur if (vcap_bitarray_zero(actionfield[idx].width, value)) 1436610c32b2SHoratiu Vultur continue; 1437610c32b2SHoratiu Vultur vcap_rule_alloc_actionfield(ri, &actionfield[idx], idx, value); 1438610c32b2SHoratiu Vultur /* Later the action id will also be checked */ 1439610c32b2SHoratiu Vultur } 1440610c32b2SHoratiu Vultur return vcap_set_rule_set_actionset((struct vcap_rule *)ri, actionset); 1441610c32b2SHoratiu Vultur } 1442610c32b2SHoratiu Vultur 1443610c32b2SHoratiu Vultur static int vcap_decode_keyset(struct vcap_rule_internal *ri) 1444610c32b2SHoratiu Vultur { 1445610c32b2SHoratiu Vultur struct vcap_control *vctrl = ri->vctrl; 1446610c32b2SHoratiu Vultur struct vcap_stream_iter kiter, miter; 1447610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1448610c32b2SHoratiu Vultur enum vcap_keyfield_set keysets[10]; 1449610c32b2SHoratiu Vultur const struct vcap_field *keyfield; 1450610c32b2SHoratiu Vultur enum vcap_type vt = admin->vtype; 1451610c32b2SHoratiu Vultur const struct vcap_typegroup *tgt; 1452610c32b2SHoratiu Vultur struct vcap_keyset_list matches; 1453610c32b2SHoratiu Vultur enum vcap_keyfield_set keyset; 1454610c32b2SHoratiu Vultur int idx, res, keyfield_count; 1455610c32b2SHoratiu Vultur u32 *maskstream; 1456610c32b2SHoratiu Vultur u32 *keystream; 1457610c32b2SHoratiu Vultur u8 value[16]; 1458610c32b2SHoratiu Vultur u8 mask[16]; 1459610c32b2SHoratiu Vultur 1460610c32b2SHoratiu Vultur keystream = admin->cache.keystream; 1461610c32b2SHoratiu Vultur maskstream = admin->cache.maskstream; 1462610c32b2SHoratiu Vultur matches.keysets = keysets; 1463610c32b2SHoratiu Vultur matches.cnt = 0; 1464610c32b2SHoratiu Vultur matches.max = ARRAY_SIZE(keysets); 1465610c32b2SHoratiu Vultur res = vcap_find_keystream_keysets(vctrl, vt, keystream, maskstream, 1466610c32b2SHoratiu Vultur false, 0, &matches); 1467610c32b2SHoratiu Vultur if (res < 0) { 1468610c32b2SHoratiu Vultur pr_err("%s:%d: could not find valid keysets: %d\n", 1469610c32b2SHoratiu Vultur __func__, __LINE__, res); 1470610c32b2SHoratiu Vultur return -EINVAL; 1471610c32b2SHoratiu Vultur } 1472610c32b2SHoratiu Vultur keyset = matches.keysets[0]; 1473610c32b2SHoratiu Vultur keyfield_count = vcap_keyfield_count(vctrl, vt, keyset); 1474610c32b2SHoratiu Vultur keyfield = vcap_keyfields(vctrl, vt, keyset); 1475610c32b2SHoratiu Vultur tgt = vcap_keyfield_typegroup(vctrl, vt, keyset); 1476610c32b2SHoratiu Vultur /* Start decoding the streams */ 1477610c32b2SHoratiu Vultur for (idx = 0; idx < keyfield_count; ++idx) { 1478610c32b2SHoratiu Vultur if (keyfield[idx].width <= 0) 1479610c32b2SHoratiu Vultur continue; 1480610c32b2SHoratiu Vultur /* First get the mask */ 1481610c32b2SHoratiu Vultur memset(mask, 0, DIV_ROUND_UP(keyfield[idx].width, 8)); 1482610c32b2SHoratiu Vultur vcap_iter_init(&miter, vctrl->vcaps[vt].sw_width, tgt, 1483610c32b2SHoratiu Vultur keyfield[idx].offset); 1484610c32b2SHoratiu Vultur vcap_decode_field(maskstream, &miter, keyfield[idx].width, 1485610c32b2SHoratiu Vultur mask); 1486610c32b2SHoratiu Vultur /* Skip if no mask bits are set */ 1487610c32b2SHoratiu Vultur if (vcap_bitarray_zero(keyfield[idx].width, mask)) 1488610c32b2SHoratiu Vultur continue; 1489610c32b2SHoratiu Vultur /* Get the key */ 1490610c32b2SHoratiu Vultur memset(value, 0, DIV_ROUND_UP(keyfield[idx].width, 8)); 1491610c32b2SHoratiu Vultur vcap_iter_init(&kiter, vctrl->vcaps[vt].sw_width, tgt, 1492610c32b2SHoratiu Vultur keyfield[idx].offset); 1493610c32b2SHoratiu Vultur vcap_decode_field(keystream, &kiter, keyfield[idx].width, 1494610c32b2SHoratiu Vultur value); 1495610c32b2SHoratiu Vultur vcap_rule_alloc_keyfield(ri, &keyfield[idx], idx, value, mask); 1496610c32b2SHoratiu Vultur } 1497610c32b2SHoratiu Vultur return vcap_set_rule_set_keyset((struct vcap_rule *)ri, keyset); 1498610c32b2SHoratiu Vultur } 1499610c32b2SHoratiu Vultur 1500610c32b2SHoratiu Vultur /* Read VCAP content into the VCAP cache */ 1501610c32b2SHoratiu Vultur static int vcap_read_rule(struct vcap_rule_internal *ri) 1502610c32b2SHoratiu Vultur { 1503610c32b2SHoratiu Vultur struct vcap_admin *admin = ri->admin; 1504610c32b2SHoratiu Vultur int sw_idx, ent_idx = 0, act_idx = 0; 1505610c32b2SHoratiu Vultur u32 addr = ri->addr; 1506610c32b2SHoratiu Vultur 1507610c32b2SHoratiu Vultur if (!ri->size || !ri->keyset_sw_regs || !ri->actionset_sw_regs) { 1508610c32b2SHoratiu Vultur pr_err("%s:%d: rule is empty\n", __func__, __LINE__); 1509610c32b2SHoratiu Vultur return -EINVAL; 1510610c32b2SHoratiu Vultur } 1511610c32b2SHoratiu Vultur vcap_erase_cache(ri); 1512610c32b2SHoratiu Vultur /* Use the values in the streams to read the VCAP cache */ 1513610c32b2SHoratiu Vultur for (sw_idx = 0; sw_idx < ri->size; sw_idx++, addr++) { 1514610c32b2SHoratiu Vultur ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_READ, 1515610c32b2SHoratiu Vultur VCAP_SEL_ALL, addr); 1516610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1517610c32b2SHoratiu Vultur VCAP_SEL_ENTRY, ent_idx, 1518610c32b2SHoratiu Vultur ri->keyset_sw_regs); 1519610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1520610c32b2SHoratiu Vultur VCAP_SEL_ACTION, act_idx, 1521610c32b2SHoratiu Vultur ri->actionset_sw_regs); 1522610c32b2SHoratiu Vultur if (sw_idx == 0) 1523610c32b2SHoratiu Vultur ri->vctrl->ops->cache_read(ri->ndev, admin, 1524610c32b2SHoratiu Vultur VCAP_SEL_COUNTER, 1525610c32b2SHoratiu Vultur ri->counter_id, 0); 1526610c32b2SHoratiu Vultur ent_idx += ri->keyset_sw_regs; 1527610c32b2SHoratiu Vultur act_idx += ri->actionset_sw_regs; 1528610c32b2SHoratiu Vultur } 1529610c32b2SHoratiu Vultur return 0; 1530610c32b2SHoratiu Vultur } 1531610c32b2SHoratiu Vultur 15328e10490bSSteen Hegelund /* Write VCAP cache content to the VCAP HW instance */ 15338e10490bSSteen Hegelund static int vcap_write_rule(struct vcap_rule_internal *ri) 15348e10490bSSteen Hegelund { 15358e10490bSSteen Hegelund struct vcap_admin *admin = ri->admin; 15368e10490bSSteen Hegelund int sw_idx, ent_idx = 0, act_idx = 0; 15378e10490bSSteen Hegelund u32 addr = ri->addr; 15388e10490bSSteen Hegelund 15398e10490bSSteen Hegelund if (!ri->size || !ri->keyset_sw_regs || !ri->actionset_sw_regs) { 15408e10490bSSteen Hegelund pr_err("%s:%d: rule is empty\n", __func__, __LINE__); 15418e10490bSSteen Hegelund return -EINVAL; 15428e10490bSSteen Hegelund } 15438e10490bSSteen Hegelund /* Use the values in the streams to write the VCAP cache */ 15448e10490bSSteen Hegelund for (sw_idx = 0; sw_idx < ri->size; sw_idx++, addr++) { 15458e10490bSSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, 15468e10490bSSteen Hegelund VCAP_SEL_ENTRY, ent_idx, 15478e10490bSSteen Hegelund ri->keyset_sw_regs); 15488e10490bSSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, 15498e10490bSSteen Hegelund VCAP_SEL_ACTION, act_idx, 15508e10490bSSteen Hegelund ri->actionset_sw_regs); 15518e10490bSSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_WRITE, 15528e10490bSSteen Hegelund VCAP_SEL_ALL, addr); 15538e10490bSSteen Hegelund ent_idx += ri->keyset_sw_regs; 15548e10490bSSteen Hegelund act_idx += ri->actionset_sw_regs; 15558e10490bSSteen Hegelund } 15568e10490bSSteen Hegelund return 0; 15578e10490bSSteen Hegelund } 15588e10490bSSteen Hegelund 1559f13230a4SSteen Hegelund static int vcap_write_counter(struct vcap_rule_internal *ri, 1560f13230a4SSteen Hegelund struct vcap_counter *ctr) 1561f13230a4SSteen Hegelund { 1562f13230a4SSteen Hegelund struct vcap_admin *admin = ri->admin; 1563f13230a4SSteen Hegelund 1564f13230a4SSteen Hegelund admin->cache.counter = ctr->value; 1565f13230a4SSteen Hegelund admin->cache.sticky = ctr->sticky; 1566f13230a4SSteen Hegelund ri->vctrl->ops->cache_write(ri->ndev, admin, VCAP_SEL_COUNTER, 1567f13230a4SSteen Hegelund ri->counter_id, 0); 1568f13230a4SSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_WRITE, 1569f13230a4SSteen Hegelund VCAP_SEL_COUNTER, ri->addr); 1570f13230a4SSteen Hegelund return 0; 1571f13230a4SSteen Hegelund } 1572f13230a4SSteen Hegelund 15737de1dcadSSteen Hegelund /* Convert a chain id to a VCAP lookup index */ 15747de1dcadSSteen Hegelund int vcap_chain_id_to_lookup(struct vcap_admin *admin, int cur_cid) 15757de1dcadSSteen Hegelund { 15767de1dcadSSteen Hegelund int lookup_first = admin->vinst * admin->lookups_per_instance; 15777de1dcadSSteen Hegelund int lookup_last = lookup_first + admin->lookups_per_instance; 15787de1dcadSSteen Hegelund int cid_next = admin->first_cid + VCAP_CID_LOOKUP_SIZE; 15797de1dcadSSteen Hegelund int cid = admin->first_cid; 15807de1dcadSSteen Hegelund int lookup; 15817de1dcadSSteen Hegelund 15827de1dcadSSteen Hegelund for (lookup = lookup_first; lookup < lookup_last; ++lookup, 15837de1dcadSSteen Hegelund cid += VCAP_CID_LOOKUP_SIZE, cid_next += VCAP_CID_LOOKUP_SIZE) 15847de1dcadSSteen Hegelund if (cur_cid >= cid && cur_cid < cid_next) 15857de1dcadSSteen Hegelund return lookup; 15867de1dcadSSteen Hegelund return 0; 15877de1dcadSSteen Hegelund } 15887de1dcadSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_chain_id_to_lookup); 15897de1dcadSSteen Hegelund 1590c9da1ac1SSteen Hegelund /* Lookup a vcap instance using chain id */ 1591c9da1ac1SSteen Hegelund struct vcap_admin *vcap_find_admin(struct vcap_control *vctrl, int cid) 1592c9da1ac1SSteen Hegelund { 1593c9da1ac1SSteen Hegelund struct vcap_admin *admin; 1594c9da1ac1SSteen Hegelund 15958e10490bSSteen Hegelund if (vcap_api_check(vctrl)) 15968e10490bSSteen Hegelund return NULL; 15978e10490bSSteen Hegelund 1598c9da1ac1SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 1599c9da1ac1SSteen Hegelund if (cid >= admin->first_cid && cid <= admin->last_cid) 1600c9da1ac1SSteen Hegelund return admin; 1601c9da1ac1SSteen Hegelund } 1602c9da1ac1SSteen Hegelund return NULL; 1603c9da1ac1SSteen Hegelund } 1604c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_find_admin); 1605c9da1ac1SSteen Hegelund 1606784c3067SSteen Hegelund /* Is the next chain id in one of the following lookups 1607784c3067SSteen Hegelund * For now this does not support filters linked to other filters using 1608784c3067SSteen Hegelund * keys and actions. That will be added later. 1609784c3067SSteen Hegelund */ 1610784c3067SSteen Hegelund bool vcap_is_next_lookup(struct vcap_control *vctrl, int src_cid, int dst_cid) 1611392d0ab0SSteen Hegelund { 1612784c3067SSteen Hegelund struct vcap_admin *admin; 1613784c3067SSteen Hegelund int next_cid; 1614392d0ab0SSteen Hegelund 1615392d0ab0SSteen Hegelund if (vcap_api_check(vctrl)) 1616392d0ab0SSteen Hegelund return false; 1617392d0ab0SSteen Hegelund 1618784c3067SSteen Hegelund /* The offset must be at least one lookup, round up */ 1619784c3067SSteen Hegelund next_cid = src_cid + VCAP_CID_LOOKUP_SIZE; 1620784c3067SSteen Hegelund next_cid /= VCAP_CID_LOOKUP_SIZE; 1621784c3067SSteen Hegelund next_cid *= VCAP_CID_LOOKUP_SIZE; 1622784c3067SSteen Hegelund 1623784c3067SSteen Hegelund if (dst_cid < next_cid) 1624784c3067SSteen Hegelund return false; 1625784c3067SSteen Hegelund 1626784c3067SSteen Hegelund admin = vcap_find_admin(vctrl, dst_cid); 1627392d0ab0SSteen Hegelund if (!admin) 1628392d0ab0SSteen Hegelund return false; 1629392d0ab0SSteen Hegelund 1630784c3067SSteen Hegelund return true; 1631392d0ab0SSteen Hegelund } 1632392d0ab0SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_is_next_lookup); 1633392d0ab0SSteen Hegelund 16348e10490bSSteen Hegelund /* Check if there is room for a new rule */ 16358e10490bSSteen Hegelund static int vcap_rule_space(struct vcap_admin *admin, int size) 16368e10490bSSteen Hegelund { 16378e10490bSSteen Hegelund if (admin->last_used_addr - size < admin->first_valid_addr) { 16388e10490bSSteen Hegelund pr_err("%s:%d: No room for rule size: %u, %u\n", 16398e10490bSSteen Hegelund __func__, __LINE__, size, admin->first_valid_addr); 16408e10490bSSteen Hegelund return -ENOSPC; 16418e10490bSSteen Hegelund } 16428e10490bSSteen Hegelund return 0; 16438e10490bSSteen Hegelund } 16448e10490bSSteen Hegelund 16458e10490bSSteen Hegelund /* Add the keyset typefield to the list of rule keyfields */ 16468e10490bSSteen Hegelund static int vcap_add_type_keyfield(struct vcap_rule *rule) 16478e10490bSSteen Hegelund { 16488e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 16498e10490bSSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 16508e10490bSSteen Hegelund enum vcap_type vt = ri->admin->vtype; 16518e10490bSSteen Hegelund const struct vcap_field *fields; 16528e10490bSSteen Hegelund const struct vcap_set *kset; 16538e10490bSSteen Hegelund int ret = -EINVAL; 16548e10490bSSteen Hegelund 16558e10490bSSteen Hegelund kset = vcap_keyfieldset(ri->vctrl, vt, keyset); 16568e10490bSSteen Hegelund if (!kset) 16578e10490bSSteen Hegelund return ret; 16588e10490bSSteen Hegelund if (kset->type_id == (u8)-1) /* No type field is needed */ 16598e10490bSSteen Hegelund return 0; 16608e10490bSSteen Hegelund 16618e10490bSSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 16628e10490bSSteen Hegelund if (!fields) 16638e10490bSSteen Hegelund return -EINVAL; 16648e10490bSSteen Hegelund if (fields[VCAP_KF_TYPE].width > 1) { 16658e10490bSSteen Hegelund ret = vcap_rule_add_key_u32(rule, VCAP_KF_TYPE, 16668e10490bSSteen Hegelund kset->type_id, 0xff); 16678e10490bSSteen Hegelund } else { 16688e10490bSSteen Hegelund if (kset->type_id) 16698e10490bSSteen Hegelund ret = vcap_rule_add_key_bit(rule, VCAP_KF_TYPE, 16708e10490bSSteen Hegelund VCAP_BIT_1); 16718e10490bSSteen Hegelund else 16728e10490bSSteen Hegelund ret = vcap_rule_add_key_bit(rule, VCAP_KF_TYPE, 16738e10490bSSteen Hegelund VCAP_BIT_0); 16748e10490bSSteen Hegelund } 16758e10490bSSteen Hegelund return 0; 16768e10490bSSteen Hegelund } 16778e10490bSSteen Hegelund 1678abc4010dSSteen Hegelund /* Add a keyset to a keyset list */ 1679abc4010dSSteen Hegelund bool vcap_keyset_list_add(struct vcap_keyset_list *keysetlist, 1680abc4010dSSteen Hegelund enum vcap_keyfield_set keyset) 1681abc4010dSSteen Hegelund { 1682abc4010dSSteen Hegelund int idx; 1683abc4010dSSteen Hegelund 1684abc4010dSSteen Hegelund if (keysetlist->cnt < keysetlist->max) { 1685abc4010dSSteen Hegelund /* Avoid duplicates */ 1686abc4010dSSteen Hegelund for (idx = 0; idx < keysetlist->cnt; ++idx) 1687abc4010dSSteen Hegelund if (keysetlist->keysets[idx] == keyset) 1688abc4010dSSteen Hegelund return keysetlist->cnt < keysetlist->max; 1689abc4010dSSteen Hegelund keysetlist->keysets[keysetlist->cnt++] = keyset; 1690abc4010dSSteen Hegelund } 1691abc4010dSSteen Hegelund return keysetlist->cnt < keysetlist->max; 1692abc4010dSSteen Hegelund } 1693abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyset_list_add); 1694abc4010dSSteen Hegelund 1695abc4010dSSteen Hegelund /* map keyset id to a string with the keyset name */ 1696abc4010dSSteen Hegelund const char *vcap_keyset_name(struct vcap_control *vctrl, 1697abc4010dSSteen Hegelund enum vcap_keyfield_set keyset) 1698abc4010dSSteen Hegelund { 1699abc4010dSSteen Hegelund return vctrl->stats->keyfield_set_names[keyset]; 1700abc4010dSSteen Hegelund } 1701abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyset_name); 1702abc4010dSSteen Hegelund 1703abc4010dSSteen Hegelund /* map key field id to a string with the key name */ 1704abc4010dSSteen Hegelund const char *vcap_keyfield_name(struct vcap_control *vctrl, 1705abc4010dSSteen Hegelund enum vcap_key_field key) 1706abc4010dSSteen Hegelund { 1707abc4010dSSteen Hegelund return vctrl->stats->keyfield_names[key]; 1708abc4010dSSteen Hegelund } 1709abc4010dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_keyfield_name); 1710abc4010dSSteen Hegelund 17113a792156SSteen Hegelund /* map actionset id to a string with the actionset name */ 17123a792156SSteen Hegelund const char *vcap_actionset_name(struct vcap_control *vctrl, 17133a792156SSteen Hegelund enum vcap_actionfield_set actionset) 17143a792156SSteen Hegelund { 17153a792156SSteen Hegelund return vctrl->stats->actionfield_set_names[actionset]; 17163a792156SSteen Hegelund } 17173a792156SSteen Hegelund 1718242df4f7SSteen Hegelund /* map action field id to a string with the action name */ 17193a792156SSteen Hegelund const char *vcap_actionfield_name(struct vcap_control *vctrl, 1720242df4f7SSteen Hegelund enum vcap_action_field action) 1721242df4f7SSteen Hegelund { 1722242df4f7SSteen Hegelund return vctrl->stats->actionfield_names[action]; 1723242df4f7SSteen Hegelund } 1724242df4f7SSteen Hegelund 1725abc4010dSSteen Hegelund /* Return the keyfield that matches a key in a keyset */ 1726abc4010dSSteen Hegelund static const struct vcap_field * 1727abc4010dSSteen Hegelund vcap_find_keyset_keyfield(struct vcap_control *vctrl, 1728abc4010dSSteen Hegelund enum vcap_type vtype, 1729abc4010dSSteen Hegelund enum vcap_keyfield_set keyset, 1730abc4010dSSteen Hegelund enum vcap_key_field key) 1731abc4010dSSteen Hegelund { 1732abc4010dSSteen Hegelund const struct vcap_field *fields; 1733abc4010dSSteen Hegelund int idx, count; 1734abc4010dSSteen Hegelund 1735abc4010dSSteen Hegelund fields = vcap_keyfields(vctrl, vtype, keyset); 1736abc4010dSSteen Hegelund if (!fields) 1737abc4010dSSteen Hegelund return NULL; 1738abc4010dSSteen Hegelund 1739abc4010dSSteen Hegelund /* Iterate the keyfields of the keyset */ 1740abc4010dSSteen Hegelund count = vcap_keyfield_count(vctrl, vtype, keyset); 1741abc4010dSSteen Hegelund for (idx = 0; idx < count; ++idx) { 1742abc4010dSSteen Hegelund if (fields[idx].width == 0) 1743abc4010dSSteen Hegelund continue; 1744abc4010dSSteen Hegelund 1745abc4010dSSteen Hegelund if (key == idx) 1746abc4010dSSteen Hegelund return &fields[idx]; 1747abc4010dSSteen Hegelund } 1748abc4010dSSteen Hegelund 1749abc4010dSSteen Hegelund return NULL; 1750abc4010dSSteen Hegelund } 1751abc4010dSSteen Hegelund 1752abc4010dSSteen Hegelund /* Match a list of keys against the keysets available in a vcap type */ 1753465a38a2SSteen Hegelund static bool _vcap_rule_find_keysets(struct vcap_rule_internal *ri, 1754abc4010dSSteen Hegelund struct vcap_keyset_list *matches) 1755abc4010dSSteen Hegelund { 1756abc4010dSSteen Hegelund const struct vcap_client_keyfield *ckf; 1757abc4010dSSteen Hegelund int keyset, found, keycount, map_size; 1758abc4010dSSteen Hegelund const struct vcap_field **map; 1759abc4010dSSteen Hegelund enum vcap_type vtype; 1760abc4010dSSteen Hegelund 1761abc4010dSSteen Hegelund vtype = ri->admin->vtype; 1762abc4010dSSteen Hegelund map = ri->vctrl->vcaps[vtype].keyfield_set_map; 1763abc4010dSSteen Hegelund map_size = ri->vctrl->vcaps[vtype].keyfield_set_size; 1764abc4010dSSteen Hegelund 1765abc4010dSSteen Hegelund /* Get a count of the keyfields we want to match */ 1766abc4010dSSteen Hegelund keycount = 0; 1767abc4010dSSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 1768abc4010dSSteen Hegelund ++keycount; 1769abc4010dSSteen Hegelund 1770abc4010dSSteen Hegelund matches->cnt = 0; 1771abc4010dSSteen Hegelund /* Iterate the keysets of the VCAP */ 1772abc4010dSSteen Hegelund for (keyset = 0; keyset < map_size; ++keyset) { 1773abc4010dSSteen Hegelund if (!map[keyset]) 1774abc4010dSSteen Hegelund continue; 1775abc4010dSSteen Hegelund 1776abc4010dSSteen Hegelund /* Iterate the keys in the rule */ 1777abc4010dSSteen Hegelund found = 0; 1778abc4010dSSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 1779abc4010dSSteen Hegelund if (vcap_find_keyset_keyfield(ri->vctrl, vtype, 1780abc4010dSSteen Hegelund keyset, ckf->ctrl.key)) 1781abc4010dSSteen Hegelund ++found; 1782abc4010dSSteen Hegelund 1783abc4010dSSteen Hegelund /* Save the keyset if all keyfields were found */ 1784abc4010dSSteen Hegelund if (found == keycount) 1785abc4010dSSteen Hegelund if (!vcap_keyset_list_add(matches, keyset)) 1786abc4010dSSteen Hegelund /* bail out when the quota is filled */ 1787abc4010dSSteen Hegelund break; 1788abc4010dSSteen Hegelund } 1789abc4010dSSteen Hegelund 1790abc4010dSSteen Hegelund return matches->cnt > 0; 1791abc4010dSSteen Hegelund } 1792abc4010dSSteen Hegelund 1793465a38a2SSteen Hegelund /* Match a list of keys against the keysets available in a vcap type */ 1794465a38a2SSteen Hegelund bool vcap_rule_find_keysets(struct vcap_rule *rule, 1795465a38a2SSteen Hegelund struct vcap_keyset_list *matches) 1796465a38a2SSteen Hegelund { 1797465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 1798465a38a2SSteen Hegelund 1799465a38a2SSteen Hegelund return _vcap_rule_find_keysets(ri, matches); 1800465a38a2SSteen Hegelund } 1801465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_find_keysets); 1802465a38a2SSteen Hegelund 1803c9da1ac1SSteen Hegelund /* Validate a rule with respect to available port keys */ 1804c9da1ac1SSteen Hegelund int vcap_val_rule(struct vcap_rule *rule, u16 l3_proto) 1805c9da1ac1SSteen Hegelund { 1806c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 1807abc4010dSSteen Hegelund struct vcap_keyset_list matches = {}; 18088e10490bSSteen Hegelund enum vcap_keyfield_set keysets[10]; 18098e10490bSSteen Hegelund int ret; 1810c9da1ac1SSteen Hegelund 18118e10490bSSteen Hegelund ret = vcap_api_check(ri->vctrl); 18128e10490bSSteen Hegelund if (ret) 18138e10490bSSteen Hegelund return ret; 1814c9da1ac1SSteen Hegelund if (!ri->admin) { 1815c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_ADMIN; 1816c9da1ac1SSteen Hegelund return -EINVAL; 1817c9da1ac1SSteen Hegelund } 1818c9da1ac1SSteen Hegelund if (!ri->ndev) { 1819c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_NETDEV; 1820c9da1ac1SSteen Hegelund return -EINVAL; 1821c9da1ac1SSteen Hegelund } 1822abc4010dSSteen Hegelund 1823abc4010dSSteen Hegelund matches.keysets = keysets; 1824abc4010dSSteen Hegelund matches.max = ARRAY_SIZE(keysets); 1825c9da1ac1SSteen Hegelund if (ri->data.keyset == VCAP_KFS_NO_VALUE) { 1826abc4010dSSteen Hegelund /* Iterate over rule keyfields and select keysets that fits */ 1827465a38a2SSteen Hegelund if (!_vcap_rule_find_keysets(ri, &matches)) { 1828c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_KEYSET_MATCH; 1829c9da1ac1SSteen Hegelund return -EINVAL; 1830c9da1ac1SSteen Hegelund } 1831abc4010dSSteen Hegelund } else { 18328e10490bSSteen Hegelund /* prepare for keyset validation */ 18338e10490bSSteen Hegelund keysets[0] = ri->data.keyset; 1834abc4010dSSteen Hegelund matches.cnt = 1; 1835abc4010dSSteen Hegelund } 1836abc4010dSSteen Hegelund 18378e10490bSSteen Hegelund /* Pick a keyset that is supported in the port lookups */ 1838abc4010dSSteen Hegelund ret = ri->vctrl->ops->validate_keyset(ri->ndev, ri->admin, rule, 1839abc4010dSSteen Hegelund &matches, l3_proto); 18408e10490bSSteen Hegelund if (ret < 0) { 18418e10490bSSteen Hegelund pr_err("%s:%d: keyset validation failed: %d\n", 18428e10490bSSteen Hegelund __func__, __LINE__, ret); 18438e10490bSSteen Hegelund ri->data.exterr = VCAP_ERR_NO_PORT_KEYSET_MATCH; 18448e10490bSSteen Hegelund return ret; 18458e10490bSSteen Hegelund } 1846abc4010dSSteen Hegelund /* use the keyset that is supported in the port lookups */ 1847abc4010dSSteen Hegelund ret = vcap_set_rule_set_keyset(rule, ret); 1848abc4010dSSteen Hegelund if (ret < 0) { 1849abc4010dSSteen Hegelund pr_err("%s:%d: keyset was not updated: %d\n", 1850abc4010dSSteen Hegelund __func__, __LINE__, ret); 1851abc4010dSSteen Hegelund return ret; 1852abc4010dSSteen Hegelund } 1853c9da1ac1SSteen Hegelund if (ri->data.actionset == VCAP_AFS_NO_VALUE) { 1854abc4010dSSteen Hegelund /* Later also actionsets will be matched against actions in 1855abc4010dSSteen Hegelund * the rule, and the type will be set accordingly 1856abc4010dSSteen Hegelund */ 1857c9da1ac1SSteen Hegelund ri->data.exterr = VCAP_ERR_NO_ACTIONSET_MATCH; 1858c9da1ac1SSteen Hegelund return -EINVAL; 1859c9da1ac1SSteen Hegelund } 18608e10490bSSteen Hegelund vcap_add_type_keyfield(rule); 18618e10490bSSteen Hegelund /* Add default fields to this rule */ 18628e10490bSSteen Hegelund ri->vctrl->ops->add_default_fields(ri->ndev, ri->admin, rule); 18638e10490bSSteen Hegelund 18648e10490bSSteen Hegelund /* Rule size is the maximum of the entry and action subword count */ 18658e10490bSSteen Hegelund ri->size = max(ri->keyset_sw, ri->actionset_sw); 18668e10490bSSteen Hegelund 18678e10490bSSteen Hegelund /* Finally check if there is room for the rule in the VCAP */ 18688e10490bSSteen Hegelund return vcap_rule_space(ri->admin, ri->size); 1869c9da1ac1SSteen Hegelund } 1870c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_val_rule); 1871c9da1ac1SSteen Hegelund 1872990e4839SSteen Hegelund /* Entries are sorted with increasing values of sort_key. 1873990e4839SSteen Hegelund * I.e. Lowest numerical sort_key is first in list. 1874990e4839SSteen Hegelund * In order to locate largest keys first in list we negate the key size with 1875990e4839SSteen Hegelund * (max_size - size). 1876990e4839SSteen Hegelund */ 1877990e4839SSteen Hegelund static u32 vcap_sort_key(u32 max_size, u32 size, u8 user, u16 prio) 1878990e4839SSteen Hegelund { 1879990e4839SSteen Hegelund return ((max_size - size) << 24) | (user << 16) | prio; 1880990e4839SSteen Hegelund } 1881990e4839SSteen Hegelund 18828e10490bSSteen Hegelund /* calculate the address of the next rule after this (lower address and prio) */ 18838e10490bSSteen Hegelund static u32 vcap_next_rule_addr(u32 addr, struct vcap_rule_internal *ri) 18848e10490bSSteen Hegelund { 18858e10490bSSteen Hegelund return ((addr - ri->size) / ri->size) * ri->size; 18868e10490bSSteen Hegelund } 18878e10490bSSteen Hegelund 1888c9da1ac1SSteen Hegelund /* Assign a unique rule id and autogenerate one if id == 0 */ 1889c9da1ac1SSteen Hegelund static u32 vcap_set_rule_id(struct vcap_rule_internal *ri) 1890c9da1ac1SSteen Hegelund { 1891c9da1ac1SSteen Hegelund if (ri->data.id != 0) 1892c9da1ac1SSteen Hegelund return ri->data.id; 1893c9da1ac1SSteen Hegelund 1894c1d8e3fbSHoratiu Vultur for (u32 next_id = 1; next_id < ~0; ++next_id) { 1895975d86acSSteen Hegelund if (!vcap_rule_exists(ri->vctrl, next_id)) { 1896c9da1ac1SSteen Hegelund ri->data.id = next_id; 1897c9da1ac1SSteen Hegelund break; 1898c9da1ac1SSteen Hegelund } 1899c9da1ac1SSteen Hegelund } 1900c9da1ac1SSteen Hegelund return ri->data.id; 1901c9da1ac1SSteen Hegelund } 1902c9da1ac1SSteen Hegelund 19038e10490bSSteen Hegelund static int vcap_insert_rule(struct vcap_rule_internal *ri, 19048e10490bSSteen Hegelund struct vcap_rule_move *move) 19058e10490bSSteen Hegelund { 1906990e4839SSteen Hegelund int sw_count = ri->vctrl->vcaps[ri->admin->vtype].sw_count; 1907990e4839SSteen Hegelund struct vcap_rule_internal *duprule, *iter, *elem = NULL; 19088e10490bSSteen Hegelund struct vcap_admin *admin = ri->admin; 1909990e4839SSteen Hegelund u32 addr; 19108e10490bSSteen Hegelund 1911990e4839SSteen Hegelund ri->sort_key = vcap_sort_key(sw_count, ri->size, ri->data.user, 1912990e4839SSteen Hegelund ri->data.priority); 1913990e4839SSteen Hegelund 1914990e4839SSteen Hegelund /* Insert the new rule in the list of rule based on the sort key 1915990e4839SSteen Hegelund * If the rule needs to be inserted between existing rules then move 1916990e4839SSteen Hegelund * these rules to make room for the new rule and update their start 1917990e4839SSteen Hegelund * address. 1918990e4839SSteen Hegelund */ 1919990e4839SSteen Hegelund list_for_each_entry(iter, &admin->rules, list) { 1920990e4839SSteen Hegelund if (ri->sort_key < iter->sort_key) { 1921990e4839SSteen Hegelund elem = iter; 1922990e4839SSteen Hegelund break; 1923990e4839SSteen Hegelund } 1924990e4839SSteen Hegelund } 1925990e4839SSteen Hegelund 1926990e4839SSteen Hegelund if (!elem) { 19278e10490bSSteen Hegelund ri->addr = vcap_next_rule_addr(admin->last_used_addr, ri); 19288e10490bSSteen Hegelund admin->last_used_addr = ri->addr; 1929990e4839SSteen Hegelund 1930814e7693SSteen Hegelund /* Add a copy of the rule to the VCAP list */ 1931814e7693SSteen Hegelund duprule = vcap_dup_rule(ri, ri->state == VCAP_RS_DISABLED); 19328e10490bSSteen Hegelund if (IS_ERR(duprule)) 19338e10490bSSteen Hegelund return PTR_ERR(duprule); 1934990e4839SSteen Hegelund 19358e10490bSSteen Hegelund list_add_tail(&duprule->list, &admin->rules); 19368e10490bSSteen Hegelund return 0; 19378e10490bSSteen Hegelund } 19388e10490bSSteen Hegelund 1939990e4839SSteen Hegelund /* Reuse the space of the current rule */ 1940990e4839SSteen Hegelund addr = elem->addr + elem->size; 1941990e4839SSteen Hegelund ri->addr = vcap_next_rule_addr(addr, ri); 1942990e4839SSteen Hegelund addr = ri->addr; 1943990e4839SSteen Hegelund 1944814e7693SSteen Hegelund /* Add a copy of the rule to the VCAP list */ 1945814e7693SSteen Hegelund duprule = vcap_dup_rule(ri, ri->state == VCAP_RS_DISABLED); 1946990e4839SSteen Hegelund if (IS_ERR(duprule)) 1947990e4839SSteen Hegelund return PTR_ERR(duprule); 1948990e4839SSteen Hegelund 1949990e4839SSteen Hegelund /* Add before the current entry */ 1950990e4839SSteen Hegelund list_add_tail(&duprule->list, &elem->list); 1951990e4839SSteen Hegelund 1952990e4839SSteen Hegelund /* Update the current rule */ 1953990e4839SSteen Hegelund elem->addr = vcap_next_rule_addr(addr, elem); 1954990e4839SSteen Hegelund addr = elem->addr; 1955990e4839SSteen Hegelund 1956990e4839SSteen Hegelund /* Update the address in the remaining rules in the list */ 1957990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) { 1958990e4839SSteen Hegelund elem->addr = vcap_next_rule_addr(addr, elem); 1959990e4839SSteen Hegelund addr = elem->addr; 1960990e4839SSteen Hegelund } 1961990e4839SSteen Hegelund 1962990e4839SSteen Hegelund /* Update the move info */ 1963990e4839SSteen Hegelund move->addr = admin->last_used_addr; 1964990e4839SSteen Hegelund move->count = ri->addr - addr; 1965990e4839SSteen Hegelund move->offset = admin->last_used_addr - addr; 1966990e4839SSteen Hegelund admin->last_used_addr = addr; 1967990e4839SSteen Hegelund return 0; 1968990e4839SSteen Hegelund } 1969990e4839SSteen Hegelund 19708e10490bSSteen Hegelund static void vcap_move_rules(struct vcap_rule_internal *ri, 19718e10490bSSteen Hegelund struct vcap_rule_move *move) 19728e10490bSSteen Hegelund { 19738e10490bSSteen Hegelund ri->vctrl->ops->move(ri->ndev, ri->admin, move->addr, 19748e10490bSSteen Hegelund move->offset, move->count); 19758e10490bSSteen Hegelund } 19768e10490bSSteen Hegelund 1977cfd9e7b7SSteen Hegelund /* Check if the chain is already used to enable a VCAP lookup for this port */ 1978cfd9e7b7SSteen Hegelund static bool vcap_is_chain_used(struct vcap_control *vctrl, 1979cfd9e7b7SSteen Hegelund struct net_device *ndev, int src_cid) 1980cfd9e7b7SSteen Hegelund { 1981cfd9e7b7SSteen Hegelund struct vcap_enabled_port *eport; 1982cfd9e7b7SSteen Hegelund struct vcap_admin *admin; 1983cfd9e7b7SSteen Hegelund 1984cfd9e7b7SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 1985cfd9e7b7SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) 1986cfd9e7b7SSteen Hegelund if (eport->src_cid == src_cid && eport->ndev == ndev) 1987cfd9e7b7SSteen Hegelund return true; 1988cfd9e7b7SSteen Hegelund 1989cfd9e7b7SSteen Hegelund return false; 1990cfd9e7b7SSteen Hegelund } 1991cfd9e7b7SSteen Hegelund 1992814e7693SSteen Hegelund /* Fetch the next chain in the enabled list for the port */ 1993814e7693SSteen Hegelund static int vcap_get_next_chain(struct vcap_control *vctrl, 1994814e7693SSteen Hegelund struct net_device *ndev, 1995814e7693SSteen Hegelund int dst_cid) 1996814e7693SSteen Hegelund { 1997814e7693SSteen Hegelund struct vcap_enabled_port *eport; 1998814e7693SSteen Hegelund struct vcap_admin *admin; 1999814e7693SSteen Hegelund 2000814e7693SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 2001814e7693SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) { 2002814e7693SSteen Hegelund if (eport->ndev != ndev) 2003814e7693SSteen Hegelund continue; 2004814e7693SSteen Hegelund if (eport->src_cid == dst_cid) 2005814e7693SSteen Hegelund return eport->dst_cid; 2006814e7693SSteen Hegelund } 2007814e7693SSteen Hegelund } 2008814e7693SSteen Hegelund 2009814e7693SSteen Hegelund return 0; 2010814e7693SSteen Hegelund } 2011814e7693SSteen Hegelund 2012814e7693SSteen Hegelund static bool vcap_path_exist(struct vcap_control *vctrl, struct net_device *ndev, 2013814e7693SSteen Hegelund int dst_cid) 2014814e7693SSteen Hegelund { 2015814e7693SSteen Hegelund struct vcap_enabled_port *eport, *elem; 2016814e7693SSteen Hegelund struct vcap_admin *admin; 2017814e7693SSteen Hegelund int tmp; 2018814e7693SSteen Hegelund 201918a15c76SSteen Hegelund if (dst_cid == 0) /* Chain zero is always available */ 202018a15c76SSteen Hegelund return true; 202118a15c76SSteen Hegelund 2022814e7693SSteen Hegelund /* Find first entry that starts from chain 0*/ 2023814e7693SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 2024814e7693SSteen Hegelund list_for_each_entry(elem, &admin->enabled, list) { 2025814e7693SSteen Hegelund if (elem->src_cid == 0 && elem->ndev == ndev) { 2026814e7693SSteen Hegelund eport = elem; 2027814e7693SSteen Hegelund break; 2028814e7693SSteen Hegelund } 2029814e7693SSteen Hegelund } 2030814e7693SSteen Hegelund if (eport) 2031814e7693SSteen Hegelund break; 2032814e7693SSteen Hegelund } 2033814e7693SSteen Hegelund 2034814e7693SSteen Hegelund if (!eport) 2035814e7693SSteen Hegelund return false; 2036814e7693SSteen Hegelund 2037814e7693SSteen Hegelund tmp = eport->dst_cid; 2038814e7693SSteen Hegelund while (tmp != dst_cid && tmp != 0) 2039814e7693SSteen Hegelund tmp = vcap_get_next_chain(vctrl, ndev, tmp); 2040814e7693SSteen Hegelund 2041814e7693SSteen Hegelund return !!tmp; 2042814e7693SSteen Hegelund } 2043814e7693SSteen Hegelund 2044814e7693SSteen Hegelund /* Internal clients can always store their rules in HW 2045814e7693SSteen Hegelund * External clients can store their rules if the chain is enabled all 2046814e7693SSteen Hegelund * the way from chain 0, otherwise the rule will be cached until 2047814e7693SSteen Hegelund * the chain is enabled. 2048814e7693SSteen Hegelund */ 2049814e7693SSteen Hegelund static void vcap_rule_set_state(struct vcap_rule_internal *ri) 2050814e7693SSteen Hegelund { 2051814e7693SSteen Hegelund if (ri->data.user <= VCAP_USER_QOS) 2052814e7693SSteen Hegelund ri->state = VCAP_RS_PERMANENT; 2053814e7693SSteen Hegelund else if (vcap_path_exist(ri->vctrl, ri->ndev, ri->data.vcap_chain_id)) 2054814e7693SSteen Hegelund ri->state = VCAP_RS_ENABLED; 2055814e7693SSteen Hegelund else 2056814e7693SSteen Hegelund ri->state = VCAP_RS_DISABLED; 2057814e7693SSteen Hegelund } 2058814e7693SSteen Hegelund 2059c9da1ac1SSteen Hegelund /* Encode and write a validated rule to the VCAP */ 2060c9da1ac1SSteen Hegelund int vcap_add_rule(struct vcap_rule *rule) 2061c9da1ac1SSteen Hegelund { 20628e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 20638e10490bSSteen Hegelund struct vcap_rule_move move = {0}; 206495fa7414SSteen Hegelund struct vcap_counter ctr = {0}; 20658e10490bSSteen Hegelund int ret; 20668e10490bSSteen Hegelund 20678e10490bSSteen Hegelund ret = vcap_api_check(ri->vctrl); 20688e10490bSSteen Hegelund if (ret) 20698e10490bSSteen Hegelund return ret; 20708e10490bSSteen Hegelund /* Insert the new rule in the list of vcap rules */ 207171c9de99SSteen Hegelund mutex_lock(&ri->admin->lock); 2072814e7693SSteen Hegelund 2073814e7693SSteen Hegelund vcap_rule_set_state(ri); 20748e10490bSSteen Hegelund ret = vcap_insert_rule(ri, &move); 20758e10490bSSteen Hegelund if (ret < 0) { 20768e10490bSSteen Hegelund pr_err("%s:%d: could not insert rule in vcap list: %d\n", 20778e10490bSSteen Hegelund __func__, __LINE__, ret); 20788e10490bSSteen Hegelund goto out; 20798e10490bSSteen Hegelund } 20808e10490bSSteen Hegelund if (move.count > 0) 20818e10490bSSteen Hegelund vcap_move_rules(ri, &move); 2082814e7693SSteen Hegelund 2083814e7693SSteen Hegelund if (ri->state == VCAP_RS_DISABLED) { 2084814e7693SSteen Hegelund /* Erase the rule area */ 2085814e7693SSteen Hegelund ri->vctrl->ops->init(ri->ndev, ri->admin, ri->addr, ri->size); 2086814e7693SSteen Hegelund goto out; 2087814e7693SSteen Hegelund } 2088814e7693SSteen Hegelund 20896573f71aSSteen Hegelund vcap_erase_cache(ri); 20908e10490bSSteen Hegelund ret = vcap_encode_rule(ri); 20918e10490bSSteen Hegelund if (ret) { 20928e10490bSSteen Hegelund pr_err("%s:%d: rule encoding error: %d\n", __func__, __LINE__, ret); 20938e10490bSSteen Hegelund goto out; 20948e10490bSSteen Hegelund } 20958e10490bSSteen Hegelund 20968e10490bSSteen Hegelund ret = vcap_write_rule(ri); 209795fa7414SSteen Hegelund if (ret) { 20988e10490bSSteen Hegelund pr_err("%s:%d: rule write error: %d\n", __func__, __LINE__, ret); 209995fa7414SSteen Hegelund goto out; 210095fa7414SSteen Hegelund } 210195fa7414SSteen Hegelund /* Set the counter to zero */ 210295fa7414SSteen Hegelund ret = vcap_write_counter(ri, &ctr); 21038e10490bSSteen Hegelund out: 210471c9de99SSteen Hegelund mutex_unlock(&ri->admin->lock); 21058e10490bSSteen Hegelund return ret; 2106c9da1ac1SSteen Hegelund } 2107c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_add_rule); 2108c9da1ac1SSteen Hegelund 2109c9da1ac1SSteen Hegelund /* Allocate a new rule with the provided arguments */ 2110c9da1ac1SSteen Hegelund struct vcap_rule *vcap_alloc_rule(struct vcap_control *vctrl, 2111c9da1ac1SSteen Hegelund struct net_device *ndev, int vcap_chain_id, 2112c9da1ac1SSteen Hegelund enum vcap_user user, u16 priority, 2113c9da1ac1SSteen Hegelund u32 id) 2114c9da1ac1SSteen Hegelund { 2115c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri; 2116c9da1ac1SSteen Hegelund struct vcap_admin *admin; 2117990e4839SSteen Hegelund int err, maxsize; 2118c9da1ac1SSteen Hegelund 2119990e4839SSteen Hegelund err = vcap_api_check(vctrl); 2120990e4839SSteen Hegelund if (err) 2121990e4839SSteen Hegelund return ERR_PTR(err); 2122c9da1ac1SSteen Hegelund if (!ndev) 2123c9da1ac1SSteen Hegelund return ERR_PTR(-ENODEV); 2124c9da1ac1SSteen Hegelund /* Get the VCAP instance */ 2125c9da1ac1SSteen Hegelund admin = vcap_find_admin(vctrl, vcap_chain_id); 2126c9da1ac1SSteen Hegelund if (!admin) 2127c9da1ac1SSteen Hegelund return ERR_PTR(-ENOENT); 21288e10490bSSteen Hegelund /* Sanity check that this VCAP is supported on this platform */ 21298e10490bSSteen Hegelund if (vctrl->vcaps[admin->vtype].rows == 0) 21308e10490bSSteen Hegelund return ERR_PTR(-EINVAL); 2131*1972b6d9SSteen Hegelund 2132*1972b6d9SSteen Hegelund mutex_lock(&admin->lock); 21338e10490bSSteen Hegelund /* Check if a rule with this id already exists */ 2134*1972b6d9SSteen Hegelund if (vcap_rule_exists(vctrl, id)) { 2135*1972b6d9SSteen Hegelund err = -EINVAL; 2136*1972b6d9SSteen Hegelund goto out_unlock; 2137*1972b6d9SSteen Hegelund } 2138*1972b6d9SSteen Hegelund 21398e10490bSSteen Hegelund /* Check if there is room for the rule in the block(s) of the VCAP */ 21408e10490bSSteen Hegelund maxsize = vctrl->vcaps[admin->vtype].sw_count; /* worst case rule size */ 2141*1972b6d9SSteen Hegelund if (vcap_rule_space(admin, maxsize)) { 2142*1972b6d9SSteen Hegelund err = -ENOSPC; 2143*1972b6d9SSteen Hegelund goto out_unlock; 2144*1972b6d9SSteen Hegelund } 2145*1972b6d9SSteen Hegelund 2146c9da1ac1SSteen Hegelund /* Create a container for the rule and return it */ 2147c9da1ac1SSteen Hegelund ri = kzalloc(sizeof(*ri), GFP_KERNEL); 2148*1972b6d9SSteen Hegelund if (!ri) { 2149*1972b6d9SSteen Hegelund err = -ENOMEM; 2150*1972b6d9SSteen Hegelund goto out_unlock; 2151*1972b6d9SSteen Hegelund } 2152*1972b6d9SSteen Hegelund 2153c9da1ac1SSteen Hegelund ri->data.vcap_chain_id = vcap_chain_id; 2154c9da1ac1SSteen Hegelund ri->data.user = user; 2155c9da1ac1SSteen Hegelund ri->data.priority = priority; 2156c9da1ac1SSteen Hegelund ri->data.id = id; 2157c9da1ac1SSteen Hegelund ri->data.keyset = VCAP_KFS_NO_VALUE; 2158c9da1ac1SSteen Hegelund ri->data.actionset = VCAP_AFS_NO_VALUE; 2159c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->list); 2160c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->data.keyfields); 2161c9da1ac1SSteen Hegelund INIT_LIST_HEAD(&ri->data.actionfields); 2162c9da1ac1SSteen Hegelund ri->ndev = ndev; 2163c9da1ac1SSteen Hegelund ri->admin = admin; /* refer to the vcap instance */ 2164c9da1ac1SSteen Hegelund ri->vctrl = vctrl; /* refer to the client */ 2165*1972b6d9SSteen Hegelund 2166*1972b6d9SSteen Hegelund if (vcap_set_rule_id(ri) == 0) { 2167*1972b6d9SSteen Hegelund err = -EINVAL; 2168c9da1ac1SSteen Hegelund goto out_free; 2169*1972b6d9SSteen Hegelund } 2170*1972b6d9SSteen Hegelund 2171*1972b6d9SSteen Hegelund mutex_unlock(&admin->lock); 2172c9da1ac1SSteen Hegelund return (struct vcap_rule *)ri; 2173c9da1ac1SSteen Hegelund 2174c9da1ac1SSteen Hegelund out_free: 2175c9da1ac1SSteen Hegelund kfree(ri); 2176*1972b6d9SSteen Hegelund out_unlock: 2177*1972b6d9SSteen Hegelund mutex_unlock(&admin->lock); 2178*1972b6d9SSteen Hegelund return ERR_PTR(err); 2179*1972b6d9SSteen Hegelund 2180c9da1ac1SSteen Hegelund } 2181c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_alloc_rule); 2182c9da1ac1SSteen Hegelund 2183c9da1ac1SSteen Hegelund /* Free mem of a rule owned by client after the rule as been added to the VCAP */ 2184c9da1ac1SSteen Hegelund void vcap_free_rule(struct vcap_rule *rule) 2185c9da1ac1SSteen Hegelund { 2186c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2187c9da1ac1SSteen Hegelund struct vcap_client_actionfield *caf, *next_caf; 2188c9da1ac1SSteen Hegelund struct vcap_client_keyfield *ckf, *next_ckf; 2189c9da1ac1SSteen Hegelund 2190c9da1ac1SSteen Hegelund /* Deallocate the list of keys and actions */ 2191c9da1ac1SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, &ri->data.keyfields, ctrl.list) { 2192c9da1ac1SSteen Hegelund list_del(&ckf->ctrl.list); 2193c9da1ac1SSteen Hegelund kfree(ckf); 2194c9da1ac1SSteen Hegelund } 2195c9da1ac1SSteen Hegelund list_for_each_entry_safe(caf, next_caf, &ri->data.actionfields, ctrl.list) { 2196c9da1ac1SSteen Hegelund list_del(&caf->ctrl.list); 2197c9da1ac1SSteen Hegelund kfree(caf); 2198c9da1ac1SSteen Hegelund } 2199c9da1ac1SSteen Hegelund /* Deallocate the rule */ 2200c9da1ac1SSteen Hegelund kfree(rule); 2201c9da1ac1SSteen Hegelund } 2202c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_free_rule); 2203c9da1ac1SSteen Hegelund 22049579e2c2SSteen Hegelund /* Decode a rule from the VCAP cache and return a copy */ 22059579e2c2SSteen Hegelund struct vcap_rule *vcap_decode_rule(struct vcap_rule_internal *elem) 2206610c32b2SHoratiu Vultur { 2207610c32b2SHoratiu Vultur struct vcap_rule_internal *ri; 2208610c32b2SHoratiu Vultur int err; 2209610c32b2SHoratiu Vultur 22109579e2c2SSteen Hegelund ri = vcap_dup_rule(elem, elem->state == VCAP_RS_DISABLED); 22119579e2c2SSteen Hegelund if (IS_ERR(ri)) 22129579e2c2SSteen Hegelund return ERR_PTR(PTR_ERR(ri)); 22139579e2c2SSteen Hegelund 22149579e2c2SSteen Hegelund if (ri->state == VCAP_RS_DISABLED) 22159579e2c2SSteen Hegelund goto out; 22169579e2c2SSteen Hegelund 22179579e2c2SSteen Hegelund err = vcap_read_rule(ri); 22189579e2c2SSteen Hegelund if (err) 22199579e2c2SSteen Hegelund return ERR_PTR(err); 22209579e2c2SSteen Hegelund 22219579e2c2SSteen Hegelund err = vcap_decode_keyset(ri); 22229579e2c2SSteen Hegelund if (err) 22239579e2c2SSteen Hegelund return ERR_PTR(err); 22249579e2c2SSteen Hegelund 22259579e2c2SSteen Hegelund err = vcap_decode_actionset(ri); 22269579e2c2SSteen Hegelund if (err) 22279579e2c2SSteen Hegelund return ERR_PTR(err); 22289579e2c2SSteen Hegelund 22299579e2c2SSteen Hegelund out: 22309579e2c2SSteen Hegelund return &ri->data; 22319579e2c2SSteen Hegelund } 22329579e2c2SSteen Hegelund 22339579e2c2SSteen Hegelund struct vcap_rule *vcap_get_rule(struct vcap_control *vctrl, u32 id) 22349579e2c2SSteen Hegelund { 22359579e2c2SSteen Hegelund struct vcap_rule_internal *elem; 22369579e2c2SSteen Hegelund struct vcap_rule *rule; 22379579e2c2SSteen Hegelund int err; 2238610c32b2SHoratiu Vultur 2239610c32b2SHoratiu Vultur err = vcap_api_check(vctrl); 2240610c32b2SHoratiu Vultur if (err) 2241610c32b2SHoratiu Vultur return ERR_PTR(err); 22429579e2c2SSteen Hegelund 2243*1972b6d9SSteen Hegelund elem = vcap_get_locked_rule(vctrl, id); 2244610c32b2SHoratiu Vultur if (!elem) 2245610c32b2SHoratiu Vultur return NULL; 22469579e2c2SSteen Hegelund 22479579e2c2SSteen Hegelund rule = vcap_decode_rule(elem); 2248610c32b2SHoratiu Vultur mutex_unlock(&elem->admin->lock); 22499579e2c2SSteen Hegelund return rule; 2250610c32b2SHoratiu Vultur } 2251610c32b2SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_get_rule); 2252610c32b2SHoratiu Vultur 22532662b3f9SHoratiu Vultur /* Update existing rule */ 22542662b3f9SHoratiu Vultur int vcap_mod_rule(struct vcap_rule *rule) 22552662b3f9SHoratiu Vultur { 22562662b3f9SHoratiu Vultur struct vcap_rule_internal *ri = to_intrule(rule); 22572662b3f9SHoratiu Vultur struct vcap_counter ctr; 22582662b3f9SHoratiu Vultur int err; 22592662b3f9SHoratiu Vultur 22602662b3f9SHoratiu Vultur err = vcap_api_check(ri->vctrl); 22612662b3f9SHoratiu Vultur if (err) 22622662b3f9SHoratiu Vultur return err; 22632662b3f9SHoratiu Vultur 2264*1972b6d9SSteen Hegelund if (!vcap_get_locked_rule(ri->vctrl, ri->data.id)) 22652662b3f9SHoratiu Vultur return -ENOENT; 22662662b3f9SHoratiu Vultur 2267814e7693SSteen Hegelund vcap_rule_set_state(ri); 2268814e7693SSteen Hegelund if (ri->state == VCAP_RS_DISABLED) 2269814e7693SSteen Hegelund goto out; 2270814e7693SSteen Hegelund 22712662b3f9SHoratiu Vultur /* Encode the bitstreams to the VCAP cache */ 22722662b3f9SHoratiu Vultur vcap_erase_cache(ri); 22732662b3f9SHoratiu Vultur err = vcap_encode_rule(ri); 22742662b3f9SHoratiu Vultur if (err) 22752662b3f9SHoratiu Vultur goto out; 22762662b3f9SHoratiu Vultur 22772662b3f9SHoratiu Vultur err = vcap_write_rule(ri); 22782662b3f9SHoratiu Vultur if (err) 22792662b3f9SHoratiu Vultur goto out; 22802662b3f9SHoratiu Vultur 22812662b3f9SHoratiu Vultur memset(&ctr, 0, sizeof(ctr)); 22822662b3f9SHoratiu Vultur err = vcap_write_counter(ri, &ctr); 22832662b3f9SHoratiu Vultur 22842662b3f9SHoratiu Vultur out: 22852662b3f9SHoratiu Vultur mutex_unlock(&ri->admin->lock); 22862662b3f9SHoratiu Vultur return err; 22872662b3f9SHoratiu Vultur } 22882662b3f9SHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_mod_rule); 22892662b3f9SHoratiu Vultur 2290990e4839SSteen Hegelund /* Return the alignment offset for a new rule address */ 2291990e4839SSteen Hegelund static int vcap_valid_rule_move(struct vcap_rule_internal *el, int offset) 2292990e4839SSteen Hegelund { 2293990e4839SSteen Hegelund return (el->addr + offset) % el->size; 2294990e4839SSteen Hegelund } 2295990e4839SSteen Hegelund 2296990e4839SSteen Hegelund /* Update the rule address with an offset */ 2297990e4839SSteen Hegelund static void vcap_adjust_rule_addr(struct vcap_rule_internal *el, int offset) 2298990e4839SSteen Hegelund { 2299990e4839SSteen Hegelund el->addr += offset; 2300990e4839SSteen Hegelund } 2301990e4839SSteen Hegelund 2302990e4839SSteen Hegelund /* Rules needs to be moved to fill the gap of the deleted rule */ 2303990e4839SSteen Hegelund static int vcap_fill_rule_gap(struct vcap_rule_internal *ri) 2304990e4839SSteen Hegelund { 2305990e4839SSteen Hegelund struct vcap_admin *admin = ri->admin; 2306990e4839SSteen Hegelund struct vcap_rule_internal *elem; 2307990e4839SSteen Hegelund struct vcap_rule_move move; 2308990e4839SSteen Hegelund int gap = 0, offset = 0; 2309990e4839SSteen Hegelund 2310990e4839SSteen Hegelund /* If the first rule is deleted: Move other rules to the top */ 2311990e4839SSteen Hegelund if (list_is_first(&ri->list, &admin->rules)) 2312990e4839SSteen Hegelund offset = admin->last_valid_addr + 1 - ri->addr - ri->size; 2313990e4839SSteen Hegelund 2314990e4839SSteen Hegelund /* Locate gaps between odd size rules and adjust the move */ 2315990e4839SSteen Hegelund elem = ri; 2316990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) 2317990e4839SSteen Hegelund gap += vcap_valid_rule_move(elem, ri->size); 2318990e4839SSteen Hegelund 2319990e4839SSteen Hegelund /* Update the address in the remaining rules in the list */ 2320990e4839SSteen Hegelund elem = ri; 2321990e4839SSteen Hegelund list_for_each_entry_continue(elem, &admin->rules, list) 2322990e4839SSteen Hegelund vcap_adjust_rule_addr(elem, ri->size + gap + offset); 2323990e4839SSteen Hegelund 2324990e4839SSteen Hegelund /* Update the move info */ 2325990e4839SSteen Hegelund move.addr = admin->last_used_addr; 2326990e4839SSteen Hegelund move.count = ri->addr - admin->last_used_addr - gap; 2327990e4839SSteen Hegelund move.offset = -(ri->size + gap + offset); 2328990e4839SSteen Hegelund 2329990e4839SSteen Hegelund /* Do the actual move operation */ 2330990e4839SSteen Hegelund vcap_move_rules(ri, &move); 2331990e4839SSteen Hegelund 2332990e4839SSteen Hegelund return gap + offset; 2333990e4839SSteen Hegelund } 2334990e4839SSteen Hegelund 2335c9da1ac1SSteen Hegelund /* Delete rule in a VCAP instance */ 2336c9da1ac1SSteen Hegelund int vcap_del_rule(struct vcap_control *vctrl, struct net_device *ndev, u32 id) 2337c9da1ac1SSteen Hegelund { 2338c9da1ac1SSteen Hegelund struct vcap_rule_internal *ri, *elem; 2339c9da1ac1SSteen Hegelund struct vcap_admin *admin; 2340990e4839SSteen Hegelund int gap = 0, err; 2341c9da1ac1SSteen Hegelund 2342c9da1ac1SSteen Hegelund /* This will later also handle rule moving */ 2343c9da1ac1SSteen Hegelund if (!ndev) 2344c9da1ac1SSteen Hegelund return -ENODEV; 23458e10490bSSteen Hegelund err = vcap_api_check(vctrl); 23468e10490bSSteen Hegelund if (err) 23478e10490bSSteen Hegelund return err; 2348c9da1ac1SSteen Hegelund /* Look for the rule id in all vcaps */ 2349*1972b6d9SSteen Hegelund ri = vcap_get_locked_rule(vctrl, id); 2350c9da1ac1SSteen Hegelund if (!ri) 2351*1972b6d9SSteen Hegelund return -ENOENT; 2352*1972b6d9SSteen Hegelund 2353c9da1ac1SSteen Hegelund admin = ri->admin; 23548e10490bSSteen Hegelund 2355990e4839SSteen Hegelund if (ri->addr > admin->last_used_addr) 2356990e4839SSteen Hegelund gap = vcap_fill_rule_gap(ri); 2357990e4839SSteen Hegelund 2358990e4839SSteen Hegelund /* Delete the rule from the list of rules and the cache */ 2359990e4839SSteen Hegelund list_del(&ri->list); 2360990e4839SSteen Hegelund vctrl->ops->init(ndev, admin, admin->last_used_addr, ri->size + gap); 2361814e7693SSteen Hegelund vcap_free_rule(&ri->data); 2362990e4839SSteen Hegelund 2363277e9179SSteen Hegelund /* Update the last used address, set to default when no rules */ 2364c9da1ac1SSteen Hegelund if (list_empty(&admin->rules)) { 2365277e9179SSteen Hegelund admin->last_used_addr = admin->last_valid_addr + 1; 2366c9da1ac1SSteen Hegelund } else { 2367990e4839SSteen Hegelund elem = list_last_entry(&admin->rules, struct vcap_rule_internal, 2368990e4839SSteen Hegelund list); 2369c9da1ac1SSteen Hegelund admin->last_used_addr = elem->addr; 2370c9da1ac1SSteen Hegelund } 2371*1972b6d9SSteen Hegelund 2372*1972b6d9SSteen Hegelund mutex_unlock(&admin->lock); 2373*1972b6d9SSteen Hegelund return err; 2374c9da1ac1SSteen Hegelund } 2375c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_del_rule); 2376c9da1ac1SSteen Hegelund 23778e10490bSSteen Hegelund /* Delete all rules in the VCAP instance */ 23788e10490bSSteen Hegelund int vcap_del_rules(struct vcap_control *vctrl, struct vcap_admin *admin) 23798e10490bSSteen Hegelund { 238067456717SSteen Hegelund struct vcap_enabled_port *eport, *next_eport; 23818e10490bSSteen Hegelund struct vcap_rule_internal *ri, *next_ri; 23828e10490bSSteen Hegelund int ret = vcap_api_check(vctrl); 23838e10490bSSteen Hegelund 23848e10490bSSteen Hegelund if (ret) 23858e10490bSSteen Hegelund return ret; 238671c9de99SSteen Hegelund 238771c9de99SSteen Hegelund mutex_lock(&admin->lock); 23888e10490bSSteen Hegelund list_for_each_entry_safe(ri, next_ri, &admin->rules, list) { 23898e10490bSSteen Hegelund vctrl->ops->init(ri->ndev, admin, ri->addr, ri->size); 23908e10490bSSteen Hegelund list_del(&ri->list); 2391814e7693SSteen Hegelund vcap_free_rule(&ri->data); 23928e10490bSSteen Hegelund } 23938e10490bSSteen Hegelund admin->last_used_addr = admin->last_valid_addr; 239467456717SSteen Hegelund 239567456717SSteen Hegelund /* Remove list of enabled ports */ 239667456717SSteen Hegelund list_for_each_entry_safe(eport, next_eport, &admin->enabled, list) { 239767456717SSteen Hegelund list_del(&eport->list); 239867456717SSteen Hegelund kfree(eport); 239967456717SSteen Hegelund } 240071c9de99SSteen Hegelund mutex_unlock(&admin->lock); 240167456717SSteen Hegelund 24028e10490bSSteen Hegelund return 0; 24038e10490bSSteen Hegelund } 24048e10490bSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_del_rules); 24058e10490bSSteen Hegelund 2406465a38a2SSteen Hegelund /* Find a client key field in a rule */ 2407465a38a2SSteen Hegelund static struct vcap_client_keyfield * 2408465a38a2SSteen Hegelund vcap_find_keyfield(struct vcap_rule *rule, enum vcap_key_field key) 2409465a38a2SSteen Hegelund { 2410465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2411465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf; 2412465a38a2SSteen Hegelund 2413465a38a2SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 2414465a38a2SSteen Hegelund if (ckf->ctrl.key == key) 2415465a38a2SSteen Hegelund return ckf; 2416465a38a2SSteen Hegelund return NULL; 2417465a38a2SSteen Hegelund } 2418465a38a2SSteen Hegelund 241946be056eSSteen Hegelund /* Find information on a key field in a rule */ 242046be056eSSteen Hegelund const struct vcap_field *vcap_lookup_keyfield(struct vcap_rule *rule, 242146be056eSSteen Hegelund enum vcap_key_field key) 242246be056eSSteen Hegelund { 24238e10490bSSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 242446be056eSSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 242546be056eSSteen Hegelund enum vcap_type vt = ri->admin->vtype; 242646be056eSSteen Hegelund const struct vcap_field *fields; 242746be056eSSteen Hegelund 242846be056eSSteen Hegelund if (keyset == VCAP_KFS_NO_VALUE) 242946be056eSSteen Hegelund return NULL; 243046be056eSSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 243146be056eSSteen Hegelund if (!fields) 243246be056eSSteen Hegelund return NULL; 243346be056eSSteen Hegelund return &fields[key]; 243446be056eSSteen Hegelund } 243546be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_lookup_keyfield); 243646be056eSSteen Hegelund 2437242df4f7SSteen Hegelund /* Check if the keyfield is already in the rule */ 2438242df4f7SSteen Hegelund static bool vcap_keyfield_unique(struct vcap_rule *rule, 2439242df4f7SSteen Hegelund enum vcap_key_field key) 2440242df4f7SSteen Hegelund { 2441242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2442242df4f7SSteen Hegelund const struct vcap_client_keyfield *ckf; 2443242df4f7SSteen Hegelund 2444242df4f7SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) 2445242df4f7SSteen Hegelund if (ckf->ctrl.key == key) 2446242df4f7SSteen Hegelund return false; 2447242df4f7SSteen Hegelund return true; 2448242df4f7SSteen Hegelund } 2449242df4f7SSteen Hegelund 2450242df4f7SSteen Hegelund /* Check if the keyfield is in the keyset */ 2451242df4f7SSteen Hegelund static bool vcap_keyfield_match_keyset(struct vcap_rule *rule, 2452242df4f7SSteen Hegelund enum vcap_key_field key) 2453242df4f7SSteen Hegelund { 2454242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2455242df4f7SSteen Hegelund enum vcap_keyfield_set keyset = rule->keyset; 2456242df4f7SSteen Hegelund enum vcap_type vt = ri->admin->vtype; 2457242df4f7SSteen Hegelund const struct vcap_field *fields; 2458242df4f7SSteen Hegelund 2459242df4f7SSteen Hegelund /* the field is accepted if the rule has no keyset yet */ 2460242df4f7SSteen Hegelund if (keyset == VCAP_KFS_NO_VALUE) 2461242df4f7SSteen Hegelund return true; 2462242df4f7SSteen Hegelund fields = vcap_keyfields(ri->vctrl, vt, keyset); 2463242df4f7SSteen Hegelund if (!fields) 2464242df4f7SSteen Hegelund return false; 2465242df4f7SSteen Hegelund /* if there is a width there is a way */ 2466242df4f7SSteen Hegelund return fields[key].width > 0; 2467242df4f7SSteen Hegelund } 2468242df4f7SSteen Hegelund 2469c9da1ac1SSteen Hegelund static int vcap_rule_add_key(struct vcap_rule *rule, 2470c9da1ac1SSteen Hegelund enum vcap_key_field key, 2471c9da1ac1SSteen Hegelund enum vcap_field_type ftype, 2472c9da1ac1SSteen Hegelund struct vcap_client_keyfield_data *data) 2473c9da1ac1SSteen Hegelund { 2474242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2475c9da1ac1SSteen Hegelund struct vcap_client_keyfield *field; 2476c9da1ac1SSteen Hegelund 2477242df4f7SSteen Hegelund if (!vcap_keyfield_unique(rule, key)) { 2478242df4f7SSteen Hegelund pr_warn("%s:%d: keyfield %s is already in the rule\n", 2479242df4f7SSteen Hegelund __func__, __LINE__, 2480242df4f7SSteen Hegelund vcap_keyfield_name(ri->vctrl, key)); 2481242df4f7SSteen Hegelund return -EINVAL; 2482242df4f7SSteen Hegelund } 2483242df4f7SSteen Hegelund 2484242df4f7SSteen Hegelund if (!vcap_keyfield_match_keyset(rule, key)) { 2485242df4f7SSteen Hegelund pr_err("%s:%d: keyfield %s does not belong in the rule keyset\n", 2486242df4f7SSteen Hegelund __func__, __LINE__, 2487242df4f7SSteen Hegelund vcap_keyfield_name(ri->vctrl, key)); 2488242df4f7SSteen Hegelund return -EINVAL; 2489242df4f7SSteen Hegelund } 2490242df4f7SSteen Hegelund 2491c9da1ac1SSteen Hegelund field = kzalloc(sizeof(*field), GFP_KERNEL); 2492c9da1ac1SSteen Hegelund if (!field) 2493c9da1ac1SSteen Hegelund return -ENOMEM; 249433e3a273SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 2495c9da1ac1SSteen Hegelund field->ctrl.key = key; 2496c9da1ac1SSteen Hegelund field->ctrl.type = ftype; 2497c9da1ac1SSteen Hegelund list_add_tail(&field->ctrl.list, &rule->keyfields); 2498c9da1ac1SSteen Hegelund return 0; 2499c9da1ac1SSteen Hegelund } 2500c9da1ac1SSteen Hegelund 250146be056eSSteen Hegelund static void vcap_rule_set_key_bitsize(struct vcap_u1_key *u1, enum vcap_bit val) 250246be056eSSteen Hegelund { 250346be056eSSteen Hegelund switch (val) { 250446be056eSSteen Hegelund case VCAP_BIT_0: 250546be056eSSteen Hegelund u1->value = 0; 250646be056eSSteen Hegelund u1->mask = 1; 250746be056eSSteen Hegelund break; 250846be056eSSteen Hegelund case VCAP_BIT_1: 250946be056eSSteen Hegelund u1->value = 1; 251046be056eSSteen Hegelund u1->mask = 1; 251146be056eSSteen Hegelund break; 251246be056eSSteen Hegelund case VCAP_BIT_ANY: 251346be056eSSteen Hegelund u1->value = 0; 251446be056eSSteen Hegelund u1->mask = 0; 251546be056eSSteen Hegelund break; 251646be056eSSteen Hegelund } 251746be056eSSteen Hegelund } 251846be056eSSteen Hegelund 251946be056eSSteen Hegelund /* Add a bit key with value and mask to the rule */ 252046be056eSSteen Hegelund int vcap_rule_add_key_bit(struct vcap_rule *rule, enum vcap_key_field key, 252146be056eSSteen Hegelund enum vcap_bit val) 252246be056eSSteen Hegelund { 252346be056eSSteen Hegelund struct vcap_client_keyfield_data data; 252446be056eSSteen Hegelund 252546be056eSSteen Hegelund vcap_rule_set_key_bitsize(&data.u1, val); 252646be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_BIT, &data); 252746be056eSSteen Hegelund } 252846be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_bit); 252946be056eSSteen Hegelund 253046be056eSSteen Hegelund /* Add a 32 bit key field with value and mask to the rule */ 253146be056eSSteen Hegelund int vcap_rule_add_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 253246be056eSSteen Hegelund u32 value, u32 mask) 253346be056eSSteen Hegelund { 253446be056eSSteen Hegelund struct vcap_client_keyfield_data data; 253546be056eSSteen Hegelund 253646be056eSSteen Hegelund data.u32.value = value; 253746be056eSSteen Hegelund data.u32.mask = mask; 253846be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U32, &data); 253946be056eSSteen Hegelund } 254046be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u32); 254146be056eSSteen Hegelund 2542c9da1ac1SSteen Hegelund /* Add a 48 bit key with value and mask to the rule */ 2543c9da1ac1SSteen Hegelund int vcap_rule_add_key_u48(struct vcap_rule *rule, enum vcap_key_field key, 2544c9da1ac1SSteen Hegelund struct vcap_u48_key *fieldval) 2545c9da1ac1SSteen Hegelund { 2546c9da1ac1SSteen Hegelund struct vcap_client_keyfield_data data; 2547c9da1ac1SSteen Hegelund 2548c9da1ac1SSteen Hegelund memcpy(&data.u48, fieldval, sizeof(data.u48)); 2549c9da1ac1SSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U48, &data); 2550c9da1ac1SSteen Hegelund } 2551c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u48); 2552c9da1ac1SSteen Hegelund 255346be056eSSteen Hegelund /* Add a 72 bit key with value and mask to the rule */ 255446be056eSSteen Hegelund int vcap_rule_add_key_u72(struct vcap_rule *rule, enum vcap_key_field key, 255546be056eSSteen Hegelund struct vcap_u72_key *fieldval) 255646be056eSSteen Hegelund { 255746be056eSSteen Hegelund struct vcap_client_keyfield_data data; 255846be056eSSteen Hegelund 255946be056eSSteen Hegelund memcpy(&data.u72, fieldval, sizeof(data.u72)); 256046be056eSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U72, &data); 256146be056eSSteen Hegelund } 256246be056eSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u72); 256346be056eSSteen Hegelund 2564d6c2964dSSteen Hegelund /* Add a 128 bit key with value and mask to the rule */ 2565d6c2964dSSteen Hegelund int vcap_rule_add_key_u128(struct vcap_rule *rule, enum vcap_key_field key, 2566d6c2964dSSteen Hegelund struct vcap_u128_key *fieldval) 2567d6c2964dSSteen Hegelund { 2568d6c2964dSSteen Hegelund struct vcap_client_keyfield_data data; 2569d6c2964dSSteen Hegelund 2570d6c2964dSSteen Hegelund memcpy(&data.u128, fieldval, sizeof(data.u128)); 2571d6c2964dSSteen Hegelund return vcap_rule_add_key(rule, key, VCAP_FIELD_U128, &data); 2572d6c2964dSSteen Hegelund } 2573d6c2964dSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_key_u128); 2574d6c2964dSSteen Hegelund 25756009b61fSHoratiu Vultur int vcap_rule_get_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 25766009b61fSHoratiu Vultur u32 *value, u32 *mask) 25776009b61fSHoratiu Vultur { 25786009b61fSHoratiu Vultur struct vcap_client_keyfield *ckf; 25796009b61fSHoratiu Vultur 25806009b61fSHoratiu Vultur ckf = vcap_find_keyfield(rule, key); 25816009b61fSHoratiu Vultur if (!ckf) 25826009b61fSHoratiu Vultur return -ENOENT; 25836009b61fSHoratiu Vultur 25846009b61fSHoratiu Vultur *value = ckf->data.u32.value; 25856009b61fSHoratiu Vultur *mask = ckf->data.u32.mask; 25866009b61fSHoratiu Vultur 25876009b61fSHoratiu Vultur return 0; 25886009b61fSHoratiu Vultur } 25896009b61fSHoratiu Vultur EXPORT_SYMBOL_GPL(vcap_rule_get_key_u32); 25906009b61fSHoratiu Vultur 2591465a38a2SSteen Hegelund /* Find a client action field in a rule */ 2592465a38a2SSteen Hegelund static struct vcap_client_actionfield * 2593465a38a2SSteen Hegelund vcap_find_actionfield(struct vcap_rule *rule, enum vcap_action_field act) 2594465a38a2SSteen Hegelund { 2595465a38a2SSteen Hegelund struct vcap_rule_internal *ri = (struct vcap_rule_internal *)rule; 2596465a38a2SSteen Hegelund struct vcap_client_actionfield *caf; 2597465a38a2SSteen Hegelund 2598465a38a2SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) 2599465a38a2SSteen Hegelund if (caf->ctrl.action == act) 2600465a38a2SSteen Hegelund return caf; 2601465a38a2SSteen Hegelund return NULL; 2602465a38a2SSteen Hegelund } 2603465a38a2SSteen Hegelund 2604242df4f7SSteen Hegelund /* Check if the actionfield is already in the rule */ 2605242df4f7SSteen Hegelund static bool vcap_actionfield_unique(struct vcap_rule *rule, 2606242df4f7SSteen Hegelund enum vcap_action_field act) 2607242df4f7SSteen Hegelund { 2608242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2609242df4f7SSteen Hegelund const struct vcap_client_actionfield *caf; 2610242df4f7SSteen Hegelund 2611242df4f7SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) 2612242df4f7SSteen Hegelund if (caf->ctrl.action == act) 2613242df4f7SSteen Hegelund return false; 2614242df4f7SSteen Hegelund return true; 2615242df4f7SSteen Hegelund } 2616242df4f7SSteen Hegelund 2617242df4f7SSteen Hegelund /* Check if the actionfield is in the actionset */ 2618242df4f7SSteen Hegelund static bool vcap_actionfield_match_actionset(struct vcap_rule *rule, 2619242df4f7SSteen Hegelund enum vcap_action_field action) 2620242df4f7SSteen Hegelund { 2621242df4f7SSteen Hegelund enum vcap_actionfield_set actionset = rule->actionset; 2622242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2623242df4f7SSteen Hegelund enum vcap_type vt = ri->admin->vtype; 2624242df4f7SSteen Hegelund const struct vcap_field *fields; 2625242df4f7SSteen Hegelund 2626242df4f7SSteen Hegelund /* the field is accepted if the rule has no actionset yet */ 2627242df4f7SSteen Hegelund if (actionset == VCAP_AFS_NO_VALUE) 2628242df4f7SSteen Hegelund return true; 2629242df4f7SSteen Hegelund fields = vcap_actionfields(ri->vctrl, vt, actionset); 2630242df4f7SSteen Hegelund if (!fields) 2631242df4f7SSteen Hegelund return false; 2632242df4f7SSteen Hegelund /* if there is a width there is a way */ 2633242df4f7SSteen Hegelund return fields[action].width > 0; 2634242df4f7SSteen Hegelund } 2635242df4f7SSteen Hegelund 2636c9da1ac1SSteen Hegelund static int vcap_rule_add_action(struct vcap_rule *rule, 2637c9da1ac1SSteen Hegelund enum vcap_action_field action, 2638c9da1ac1SSteen Hegelund enum vcap_field_type ftype, 2639c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data *data) 2640c9da1ac1SSteen Hegelund { 2641242df4f7SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 2642c9da1ac1SSteen Hegelund struct vcap_client_actionfield *field; 2643c9da1ac1SSteen Hegelund 2644242df4f7SSteen Hegelund if (!vcap_actionfield_unique(rule, action)) { 2645242df4f7SSteen Hegelund pr_warn("%s:%d: actionfield %s is already in the rule\n", 2646242df4f7SSteen Hegelund __func__, __LINE__, 2647242df4f7SSteen Hegelund vcap_actionfield_name(ri->vctrl, action)); 2648242df4f7SSteen Hegelund return -EINVAL; 2649242df4f7SSteen Hegelund } 2650242df4f7SSteen Hegelund 2651242df4f7SSteen Hegelund if (!vcap_actionfield_match_actionset(rule, action)) { 2652242df4f7SSteen Hegelund pr_err("%s:%d: actionfield %s does not belong in the rule actionset\n", 2653242df4f7SSteen Hegelund __func__, __LINE__, 2654242df4f7SSteen Hegelund vcap_actionfield_name(ri->vctrl, action)); 2655242df4f7SSteen Hegelund return -EINVAL; 2656242df4f7SSteen Hegelund } 2657242df4f7SSteen Hegelund 2658c9da1ac1SSteen Hegelund field = kzalloc(sizeof(*field), GFP_KERNEL); 2659c9da1ac1SSteen Hegelund if (!field) 2660c9da1ac1SSteen Hegelund return -ENOMEM; 266133e3a273SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 2662c9da1ac1SSteen Hegelund field->ctrl.action = action; 2663c9da1ac1SSteen Hegelund field->ctrl.type = ftype; 2664c9da1ac1SSteen Hegelund list_add_tail(&field->ctrl.list, &rule->actionfields); 2665c9da1ac1SSteen Hegelund return 0; 2666c9da1ac1SSteen Hegelund } 2667c9da1ac1SSteen Hegelund 2668c9da1ac1SSteen Hegelund static void vcap_rule_set_action_bitsize(struct vcap_u1_action *u1, 2669c9da1ac1SSteen Hegelund enum vcap_bit val) 2670c9da1ac1SSteen Hegelund { 2671c9da1ac1SSteen Hegelund switch (val) { 2672c9da1ac1SSteen Hegelund case VCAP_BIT_0: 2673c9da1ac1SSteen Hegelund u1->value = 0; 2674c9da1ac1SSteen Hegelund break; 2675c9da1ac1SSteen Hegelund case VCAP_BIT_1: 2676c9da1ac1SSteen Hegelund u1->value = 1; 2677c9da1ac1SSteen Hegelund break; 2678c9da1ac1SSteen Hegelund case VCAP_BIT_ANY: 2679c9da1ac1SSteen Hegelund u1->value = 0; 2680c9da1ac1SSteen Hegelund break; 2681c9da1ac1SSteen Hegelund } 2682c9da1ac1SSteen Hegelund } 2683c9da1ac1SSteen Hegelund 2684c9da1ac1SSteen Hegelund /* Add a bit action with value to the rule */ 2685c9da1ac1SSteen Hegelund int vcap_rule_add_action_bit(struct vcap_rule *rule, 2686c9da1ac1SSteen Hegelund enum vcap_action_field action, 2687c9da1ac1SSteen Hegelund enum vcap_bit val) 2688c9da1ac1SSteen Hegelund { 2689c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data data; 2690c9da1ac1SSteen Hegelund 2691c9da1ac1SSteen Hegelund vcap_rule_set_action_bitsize(&data.u1, val); 2692c9da1ac1SSteen Hegelund return vcap_rule_add_action(rule, action, VCAP_FIELD_BIT, &data); 2693c9da1ac1SSteen Hegelund } 2694c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_action_bit); 2695c9da1ac1SSteen Hegelund 2696c9da1ac1SSteen Hegelund /* Add a 32 bit action field with value to the rule */ 2697c9da1ac1SSteen Hegelund int vcap_rule_add_action_u32(struct vcap_rule *rule, 2698c9da1ac1SSteen Hegelund enum vcap_action_field action, 2699c9da1ac1SSteen Hegelund u32 value) 2700c9da1ac1SSteen Hegelund { 2701c9da1ac1SSteen Hegelund struct vcap_client_actionfield_data data; 2702c9da1ac1SSteen Hegelund 2703c9da1ac1SSteen Hegelund data.u32.value = value; 2704c9da1ac1SSteen Hegelund return vcap_rule_add_action(rule, action, VCAP_FIELD_U32, &data); 2705c9da1ac1SSteen Hegelund } 2706c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_add_action_u32); 2707c9da1ac1SSteen Hegelund 2708f13230a4SSteen Hegelund static int vcap_read_counter(struct vcap_rule_internal *ri, 2709f13230a4SSteen Hegelund struct vcap_counter *ctr) 2710f13230a4SSteen Hegelund { 2711f13230a4SSteen Hegelund struct vcap_admin *admin = ri->admin; 2712f13230a4SSteen Hegelund 2713f13230a4SSteen Hegelund ri->vctrl->ops->update(ri->ndev, admin, VCAP_CMD_READ, VCAP_SEL_COUNTER, 2714f13230a4SSteen Hegelund ri->addr); 2715f13230a4SSteen Hegelund ri->vctrl->ops->cache_read(ri->ndev, admin, VCAP_SEL_COUNTER, 2716f13230a4SSteen Hegelund ri->counter_id, 0); 2717f13230a4SSteen Hegelund ctr->value = admin->cache.counter; 2718f13230a4SSteen Hegelund ctr->sticky = admin->cache.sticky; 2719f13230a4SSteen Hegelund return 0; 2720f13230a4SSteen Hegelund } 2721f13230a4SSteen Hegelund 2722c9da1ac1SSteen Hegelund /* Copy to host byte order */ 2723c9da1ac1SSteen Hegelund void vcap_netbytes_copy(u8 *dst, u8 *src, int count) 2724c9da1ac1SSteen Hegelund { 2725c9da1ac1SSteen Hegelund int idx; 2726c9da1ac1SSteen Hegelund 2727c9da1ac1SSteen Hegelund for (idx = 0; idx < count; ++idx, ++dst) 2728c9da1ac1SSteen Hegelund *dst = src[count - idx - 1]; 2729c9da1ac1SSteen Hegelund } 2730c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_netbytes_copy); 2731c9da1ac1SSteen Hegelund 2732c9da1ac1SSteen Hegelund /* Convert validation error code into tc extact error message */ 2733c9da1ac1SSteen Hegelund void vcap_set_tc_exterr(struct flow_cls_offload *fco, struct vcap_rule *vrule) 2734c9da1ac1SSteen Hegelund { 2735c9da1ac1SSteen Hegelund switch (vrule->exterr) { 2736c9da1ac1SSteen Hegelund case VCAP_ERR_NONE: 2737c9da1ac1SSteen Hegelund break; 2738c9da1ac1SSteen Hegelund case VCAP_ERR_NO_ADMIN: 2739c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2740c9da1ac1SSteen Hegelund "Missing VCAP instance"); 2741c9da1ac1SSteen Hegelund break; 2742c9da1ac1SSteen Hegelund case VCAP_ERR_NO_NETDEV: 2743c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2744c9da1ac1SSteen Hegelund "Missing network interface"); 2745c9da1ac1SSteen Hegelund break; 2746c9da1ac1SSteen Hegelund case VCAP_ERR_NO_KEYSET_MATCH: 2747c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2748c9da1ac1SSteen Hegelund "No keyset matched the filter keys"); 2749c9da1ac1SSteen Hegelund break; 2750c9da1ac1SSteen Hegelund case VCAP_ERR_NO_ACTIONSET_MATCH: 2751c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2752c9da1ac1SSteen Hegelund "No actionset matched the filter actions"); 2753c9da1ac1SSteen Hegelund break; 2754c9da1ac1SSteen Hegelund case VCAP_ERR_NO_PORT_KEYSET_MATCH: 2755c9da1ac1SSteen Hegelund NL_SET_ERR_MSG_MOD(fco->common.extack, 2756c9da1ac1SSteen Hegelund "No port keyset matched the filter keys"); 2757c9da1ac1SSteen Hegelund break; 2758c9da1ac1SSteen Hegelund } 2759c9da1ac1SSteen Hegelund } 2760c9da1ac1SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_set_tc_exterr); 276167d63751SSteen Hegelund 276218a15c76SSteen Hegelund /* Write a rule to VCAP HW to enable it */ 276318a15c76SSteen Hegelund static int vcap_enable_rule(struct vcap_rule_internal *ri) 276418a15c76SSteen Hegelund { 276518a15c76SSteen Hegelund struct vcap_client_actionfield *af, *naf; 276618a15c76SSteen Hegelund struct vcap_client_keyfield *kf, *nkf; 276718a15c76SSteen Hegelund int err; 276818a15c76SSteen Hegelund 276918a15c76SSteen Hegelund vcap_erase_cache(ri); 277018a15c76SSteen Hegelund err = vcap_encode_rule(ri); 277118a15c76SSteen Hegelund if (err) 277218a15c76SSteen Hegelund goto out; 277318a15c76SSteen Hegelund err = vcap_write_rule(ri); 277418a15c76SSteen Hegelund if (err) 277518a15c76SSteen Hegelund goto out; 277618a15c76SSteen Hegelund 277718a15c76SSteen Hegelund /* Deallocate the list of keys and actions */ 277818a15c76SSteen Hegelund list_for_each_entry_safe(kf, nkf, &ri->data.keyfields, ctrl.list) { 277918a15c76SSteen Hegelund list_del(&kf->ctrl.list); 278018a15c76SSteen Hegelund kfree(kf); 278118a15c76SSteen Hegelund } 278218a15c76SSteen Hegelund list_for_each_entry_safe(af, naf, &ri->data.actionfields, ctrl.list) { 278318a15c76SSteen Hegelund list_del(&af->ctrl.list); 278418a15c76SSteen Hegelund kfree(af); 278518a15c76SSteen Hegelund } 278618a15c76SSteen Hegelund ri->state = VCAP_RS_ENABLED; 278718a15c76SSteen Hegelund out: 278818a15c76SSteen Hegelund return err; 278918a15c76SSteen Hegelund } 279018a15c76SSteen Hegelund 279118a15c76SSteen Hegelund /* Enable all disabled rules for a specific chain/port in the VCAP HW */ 279218a15c76SSteen Hegelund static int vcap_enable_rules(struct vcap_control *vctrl, 279318a15c76SSteen Hegelund struct net_device *ndev, int chain) 279418a15c76SSteen Hegelund { 279518a15c76SSteen Hegelund struct vcap_rule_internal *ri; 279618a15c76SSteen Hegelund struct vcap_admin *admin; 279718a15c76SSteen Hegelund int err = 0; 279818a15c76SSteen Hegelund 279918a15c76SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 280018a15c76SSteen Hegelund if (!(chain >= admin->first_cid && chain <= admin->last_cid)) 280118a15c76SSteen Hegelund continue; 280218a15c76SSteen Hegelund 280318a15c76SSteen Hegelund /* Found the admin, now find the offloadable rules */ 280418a15c76SSteen Hegelund mutex_lock(&admin->lock); 280518a15c76SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) { 280618a15c76SSteen Hegelund if (ri->data.vcap_chain_id != chain) 280718a15c76SSteen Hegelund continue; 280818a15c76SSteen Hegelund 280918a15c76SSteen Hegelund if (ri->ndev != ndev) 281018a15c76SSteen Hegelund continue; 281118a15c76SSteen Hegelund 281218a15c76SSteen Hegelund if (ri->state != VCAP_RS_DISABLED) 281318a15c76SSteen Hegelund continue; 281418a15c76SSteen Hegelund 281518a15c76SSteen Hegelund err = vcap_enable_rule(ri); 281618a15c76SSteen Hegelund if (err) 281718a15c76SSteen Hegelund break; 281818a15c76SSteen Hegelund } 281918a15c76SSteen Hegelund mutex_unlock(&admin->lock); 282018a15c76SSteen Hegelund if (err) 282118a15c76SSteen Hegelund break; 282218a15c76SSteen Hegelund } 282318a15c76SSteen Hegelund return err; 282418a15c76SSteen Hegelund } 282518a15c76SSteen Hegelund 282618a15c76SSteen Hegelund /* Read and erase a rule from VCAP HW to disable it */ 282718a15c76SSteen Hegelund static int vcap_disable_rule(struct vcap_rule_internal *ri) 282818a15c76SSteen Hegelund { 282918a15c76SSteen Hegelund int err; 283018a15c76SSteen Hegelund 283118a15c76SSteen Hegelund err = vcap_read_rule(ri); 283218a15c76SSteen Hegelund if (err) 283318a15c76SSteen Hegelund return err; 283418a15c76SSteen Hegelund err = vcap_decode_keyset(ri); 283518a15c76SSteen Hegelund if (err) 283618a15c76SSteen Hegelund return err; 283718a15c76SSteen Hegelund err = vcap_decode_actionset(ri); 283818a15c76SSteen Hegelund if (err) 283918a15c76SSteen Hegelund return err; 284018a15c76SSteen Hegelund 284118a15c76SSteen Hegelund ri->state = VCAP_RS_DISABLED; 284218a15c76SSteen Hegelund ri->vctrl->ops->init(ri->ndev, ri->admin, ri->addr, ri->size); 284318a15c76SSteen Hegelund return 0; 284418a15c76SSteen Hegelund } 284518a15c76SSteen Hegelund 284618a15c76SSteen Hegelund /* Disable all enabled rules for a specific chain/port in the VCAP HW */ 284718a15c76SSteen Hegelund static int vcap_disable_rules(struct vcap_control *vctrl, 284818a15c76SSteen Hegelund struct net_device *ndev, int chain) 284918a15c76SSteen Hegelund { 285018a15c76SSteen Hegelund struct vcap_rule_internal *ri; 285118a15c76SSteen Hegelund struct vcap_admin *admin; 285218a15c76SSteen Hegelund int err = 0; 285318a15c76SSteen Hegelund 285418a15c76SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 285518a15c76SSteen Hegelund if (!(chain >= admin->first_cid && chain <= admin->last_cid)) 285618a15c76SSteen Hegelund continue; 285718a15c76SSteen Hegelund 285818a15c76SSteen Hegelund /* Found the admin, now find the rules on the chain */ 285918a15c76SSteen Hegelund mutex_lock(&admin->lock); 286018a15c76SSteen Hegelund list_for_each_entry(ri, &admin->rules, list) { 286118a15c76SSteen Hegelund if (ri->data.vcap_chain_id != chain) 286218a15c76SSteen Hegelund continue; 286318a15c76SSteen Hegelund 286418a15c76SSteen Hegelund if (ri->ndev != ndev) 286518a15c76SSteen Hegelund continue; 286618a15c76SSteen Hegelund 286718a15c76SSteen Hegelund if (ri->state != VCAP_RS_ENABLED) 286818a15c76SSteen Hegelund continue; 286918a15c76SSteen Hegelund 287018a15c76SSteen Hegelund err = vcap_disable_rule(ri); 287118a15c76SSteen Hegelund if (err) 287218a15c76SSteen Hegelund break; 287318a15c76SSteen Hegelund } 287418a15c76SSteen Hegelund mutex_unlock(&admin->lock); 287518a15c76SSteen Hegelund if (err) 287618a15c76SSteen Hegelund break; 287718a15c76SSteen Hegelund } 287818a15c76SSteen Hegelund return err; 287918a15c76SSteen Hegelund } 288018a15c76SSteen Hegelund 288167456717SSteen Hegelund /* Check if this port is already enabled for this VCAP instance */ 2882cfd9e7b7SSteen Hegelund static bool vcap_is_enabled(struct vcap_control *vctrl, struct net_device *ndev, 2883cfd9e7b7SSteen Hegelund int dst_cid) 288467456717SSteen Hegelund { 288567456717SSteen Hegelund struct vcap_enabled_port *eport; 2886cfd9e7b7SSteen Hegelund struct vcap_admin *admin; 288767456717SSteen Hegelund 2888cfd9e7b7SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) 288967456717SSteen Hegelund list_for_each_entry(eport, &admin->enabled, list) 2890cfd9e7b7SSteen Hegelund if (eport->dst_cid == dst_cid && eport->ndev == ndev) 289167456717SSteen Hegelund return true; 289267456717SSteen Hegelund 289367456717SSteen Hegelund return false; 289467456717SSteen Hegelund } 289567456717SSteen Hegelund 2896cfd9e7b7SSteen Hegelund /* Enable this port and chain id in a VCAP instance */ 2897cfd9e7b7SSteen Hegelund static int vcap_enable(struct vcap_control *vctrl, struct net_device *ndev, 2898cfd9e7b7SSteen Hegelund unsigned long cookie, int src_cid, int dst_cid) 289967456717SSteen Hegelund { 290067456717SSteen Hegelund struct vcap_enabled_port *eport; 2901cfd9e7b7SSteen Hegelund struct vcap_admin *admin; 2902cfd9e7b7SSteen Hegelund 2903cfd9e7b7SSteen Hegelund if (src_cid >= dst_cid) 2904cfd9e7b7SSteen Hegelund return -EFAULT; 2905cfd9e7b7SSteen Hegelund 2906cfd9e7b7SSteen Hegelund admin = vcap_find_admin(vctrl, dst_cid); 2907cfd9e7b7SSteen Hegelund if (!admin) 2908cfd9e7b7SSteen Hegelund return -ENOENT; 290967456717SSteen Hegelund 291067456717SSteen Hegelund eport = kzalloc(sizeof(*eport), GFP_KERNEL); 291167456717SSteen Hegelund if (!eport) 291267456717SSteen Hegelund return -ENOMEM; 291367456717SSteen Hegelund 291467456717SSteen Hegelund eport->ndev = ndev; 291567456717SSteen Hegelund eport->cookie = cookie; 2916cfd9e7b7SSteen Hegelund eport->src_cid = src_cid; 2917cfd9e7b7SSteen Hegelund eport->dst_cid = dst_cid; 2918cfd9e7b7SSteen Hegelund mutex_lock(&admin->lock); 291967456717SSteen Hegelund list_add_tail(&eport->list, &admin->enabled); 2920cfd9e7b7SSteen Hegelund mutex_unlock(&admin->lock); 292167456717SSteen Hegelund 292218a15c76SSteen Hegelund if (vcap_path_exist(vctrl, ndev, src_cid)) { 292318a15c76SSteen Hegelund /* Enable chained lookups */ 292418a15c76SSteen Hegelund while (dst_cid) { 292518a15c76SSteen Hegelund admin = vcap_find_admin(vctrl, dst_cid); 292618a15c76SSteen Hegelund if (!admin) 292718a15c76SSteen Hegelund return -ENOENT; 292818a15c76SSteen Hegelund 292918a15c76SSteen Hegelund vcap_enable_rules(vctrl, ndev, dst_cid); 293018a15c76SSteen Hegelund dst_cid = vcap_get_next_chain(vctrl, ndev, dst_cid); 293118a15c76SSteen Hegelund } 293218a15c76SSteen Hegelund } 293367456717SSteen Hegelund return 0; 293467456717SSteen Hegelund } 293567456717SSteen Hegelund 2936cfd9e7b7SSteen Hegelund /* Disable this port and chain id for a VCAP instance */ 2937cfd9e7b7SSteen Hegelund static int vcap_disable(struct vcap_control *vctrl, struct net_device *ndev, 293867456717SSteen Hegelund unsigned long cookie) 293967456717SSteen Hegelund { 2940cfd9e7b7SSteen Hegelund struct vcap_enabled_port *elem, *eport = NULL; 2941cfd9e7b7SSteen Hegelund struct vcap_admin *found = NULL, *admin; 294218a15c76SSteen Hegelund int dst_cid; 294367456717SSteen Hegelund 2944cfd9e7b7SSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 2945cfd9e7b7SSteen Hegelund list_for_each_entry(elem, &admin->enabled, list) { 2946cfd9e7b7SSteen Hegelund if (elem->cookie == cookie && elem->ndev == ndev) { 2947cfd9e7b7SSteen Hegelund eport = elem; 2948cfd9e7b7SSteen Hegelund found = admin; 2949cfd9e7b7SSteen Hegelund break; 2950cfd9e7b7SSteen Hegelund } 2951cfd9e7b7SSteen Hegelund } 2952cfd9e7b7SSteen Hegelund if (eport) 2953cfd9e7b7SSteen Hegelund break; 2954cfd9e7b7SSteen Hegelund } 2955cfd9e7b7SSteen Hegelund 2956cfd9e7b7SSteen Hegelund if (!eport) 2957cfd9e7b7SSteen Hegelund return -ENOENT; 2958cfd9e7b7SSteen Hegelund 295918a15c76SSteen Hegelund /* Disable chained lookups */ 296018a15c76SSteen Hegelund dst_cid = eport->dst_cid; 296118a15c76SSteen Hegelund while (dst_cid) { 296218a15c76SSteen Hegelund admin = vcap_find_admin(vctrl, dst_cid); 296318a15c76SSteen Hegelund if (!admin) 296418a15c76SSteen Hegelund return -ENOENT; 296518a15c76SSteen Hegelund 296618a15c76SSteen Hegelund vcap_disable_rules(vctrl, ndev, dst_cid); 296718a15c76SSteen Hegelund dst_cid = vcap_get_next_chain(vctrl, ndev, dst_cid); 296818a15c76SSteen Hegelund } 296918a15c76SSteen Hegelund 2970cfd9e7b7SSteen Hegelund mutex_lock(&found->lock); 297167456717SSteen Hegelund list_del(&eport->list); 2972cfd9e7b7SSteen Hegelund mutex_unlock(&found->lock); 297367456717SSteen Hegelund kfree(eport); 297467456717SSteen Hegelund return 0; 297567456717SSteen Hegelund } 297667456717SSteen Hegelund 2977cfd9e7b7SSteen Hegelund /* Enable/Disable the VCAP instance lookups */ 297867456717SSteen Hegelund int vcap_enable_lookups(struct vcap_control *vctrl, struct net_device *ndev, 2979cfd9e7b7SSteen Hegelund int src_cid, int dst_cid, unsigned long cookie, 2980cfd9e7b7SSteen Hegelund bool enable) 298167456717SSteen Hegelund { 298267456717SSteen Hegelund int err; 298367456717SSteen Hegelund 298467456717SSteen Hegelund err = vcap_api_check(vctrl); 298567456717SSteen Hegelund if (err) 298667456717SSteen Hegelund return err; 298767456717SSteen Hegelund 298867456717SSteen Hegelund if (!ndev) 298967456717SSteen Hegelund return -ENODEV; 299067456717SSteen Hegelund 2991cfd9e7b7SSteen Hegelund /* Source and destination must be the first chain in a lookup */ 2992cfd9e7b7SSteen Hegelund if (src_cid % VCAP_CID_LOOKUP_SIZE) 2993cfd9e7b7SSteen Hegelund return -EFAULT; 2994cfd9e7b7SSteen Hegelund if (dst_cid % VCAP_CID_LOOKUP_SIZE) 299567456717SSteen Hegelund return -EFAULT; 299667456717SSteen Hegelund 2997cfd9e7b7SSteen Hegelund if (enable) { 2998cfd9e7b7SSteen Hegelund if (vcap_is_enabled(vctrl, ndev, dst_cid)) 299967456717SSteen Hegelund return -EADDRINUSE; 3000cfd9e7b7SSteen Hegelund if (vcap_is_chain_used(vctrl, ndev, src_cid)) 3001cfd9e7b7SSteen Hegelund return -EADDRNOTAVAIL; 3002cfd9e7b7SSteen Hegelund err = vcap_enable(vctrl, ndev, cookie, src_cid, dst_cid); 300367456717SSteen Hegelund } else { 3004cfd9e7b7SSteen Hegelund err = vcap_disable(vctrl, ndev, cookie); 300567456717SSteen Hegelund } 300667456717SSteen Hegelund 3007cfd9e7b7SSteen Hegelund return err; 300867456717SSteen Hegelund } 300967456717SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_enable_lookups); 301067456717SSteen Hegelund 3011784c3067SSteen Hegelund /* Is this chain id the last lookup of all VCAPs */ 3012784c3067SSteen Hegelund bool vcap_is_last_chain(struct vcap_control *vctrl, int cid) 3013784c3067SSteen Hegelund { 3014784c3067SSteen Hegelund struct vcap_admin *admin; 3015784c3067SSteen Hegelund int lookup; 3016784c3067SSteen Hegelund 3017784c3067SSteen Hegelund if (vcap_api_check(vctrl)) 3018784c3067SSteen Hegelund return false; 3019784c3067SSteen Hegelund 3020784c3067SSteen Hegelund admin = vcap_find_admin(vctrl, cid); 3021784c3067SSteen Hegelund if (!admin) 3022784c3067SSteen Hegelund return false; 3023784c3067SSteen Hegelund 3024784c3067SSteen Hegelund /* This must be the last lookup in this VCAP type */ 3025784c3067SSteen Hegelund lookup = vcap_chain_id_to_lookup(admin, cid); 3026784c3067SSteen Hegelund return lookup == admin->lookups - 1; 3027784c3067SSteen Hegelund } 3028784c3067SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_is_last_chain); 3029784c3067SSteen Hegelund 3030f13230a4SSteen Hegelund /* Set a rule counter id (for certain vcaps only) */ 3031f13230a4SSteen Hegelund void vcap_rule_set_counter_id(struct vcap_rule *rule, u32 counter_id) 3032f13230a4SSteen Hegelund { 3033f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 3034f13230a4SSteen Hegelund 3035f13230a4SSteen Hegelund ri->counter_id = counter_id; 3036f13230a4SSteen Hegelund } 3037f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_set_counter_id); 3038f13230a4SSteen Hegelund 3039f13230a4SSteen Hegelund int vcap_rule_set_counter(struct vcap_rule *rule, struct vcap_counter *ctr) 3040f13230a4SSteen Hegelund { 3041f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 3042f13230a4SSteen Hegelund int err; 3043f13230a4SSteen Hegelund 3044f13230a4SSteen Hegelund err = vcap_api_check(ri->vctrl); 3045f13230a4SSteen Hegelund if (err) 3046f13230a4SSteen Hegelund return err; 3047f13230a4SSteen Hegelund if (!ctr) { 3048f13230a4SSteen Hegelund pr_err("%s:%d: counter is missing\n", __func__, __LINE__); 3049f13230a4SSteen Hegelund return -EINVAL; 3050f13230a4SSteen Hegelund } 3051*1972b6d9SSteen Hegelund 3052*1972b6d9SSteen Hegelund mutex_lock(&ri->admin->lock); 3053*1972b6d9SSteen Hegelund err = vcap_write_counter(ri, ctr); 3054*1972b6d9SSteen Hegelund mutex_unlock(&ri->admin->lock); 3055*1972b6d9SSteen Hegelund 3056*1972b6d9SSteen Hegelund return err; 3057f13230a4SSteen Hegelund } 3058f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_set_counter); 3059f13230a4SSteen Hegelund 3060f13230a4SSteen Hegelund int vcap_rule_get_counter(struct vcap_rule *rule, struct vcap_counter *ctr) 3061f13230a4SSteen Hegelund { 3062f13230a4SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 3063f13230a4SSteen Hegelund int err; 3064f13230a4SSteen Hegelund 3065f13230a4SSteen Hegelund err = vcap_api_check(ri->vctrl); 3066f13230a4SSteen Hegelund if (err) 3067f13230a4SSteen Hegelund return err; 3068f13230a4SSteen Hegelund if (!ctr) { 3069f13230a4SSteen Hegelund pr_err("%s:%d: counter is missing\n", __func__, __LINE__); 3070f13230a4SSteen Hegelund return -EINVAL; 3071f13230a4SSteen Hegelund } 3072*1972b6d9SSteen Hegelund 3073*1972b6d9SSteen Hegelund mutex_lock(&ri->admin->lock); 3074*1972b6d9SSteen Hegelund err = vcap_read_counter(ri, ctr); 3075*1972b6d9SSteen Hegelund mutex_unlock(&ri->admin->lock); 3076*1972b6d9SSteen Hegelund 3077*1972b6d9SSteen Hegelund return err; 3078f13230a4SSteen Hegelund } 3079f13230a4SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_get_counter); 3080f13230a4SSteen Hegelund 308118a15c76SSteen Hegelund /* Get a copy of a client key field */ 308218a15c76SSteen Hegelund static int vcap_rule_get_key(struct vcap_rule *rule, 308318a15c76SSteen Hegelund enum vcap_key_field key, 308418a15c76SSteen Hegelund struct vcap_client_keyfield *ckf) 308518a15c76SSteen Hegelund { 308618a15c76SSteen Hegelund struct vcap_client_keyfield *field; 308718a15c76SSteen Hegelund 308818a15c76SSteen Hegelund field = vcap_find_keyfield(rule, key); 308918a15c76SSteen Hegelund if (!field) 309018a15c76SSteen Hegelund return -EINVAL; 309118a15c76SSteen Hegelund memcpy(ckf, field, sizeof(*ckf)); 309218a15c76SSteen Hegelund INIT_LIST_HEAD(&ckf->ctrl.list); 309318a15c76SSteen Hegelund return 0; 309418a15c76SSteen Hegelund } 309518a15c76SSteen Hegelund 309618a15c76SSteen Hegelund /* Get the keysets that matches the rule key type/mask */ 309718a15c76SSteen Hegelund int vcap_rule_get_keysets(struct vcap_rule_internal *ri, 309818a15c76SSteen Hegelund struct vcap_keyset_list *matches) 309918a15c76SSteen Hegelund { 310018a15c76SSteen Hegelund struct vcap_control *vctrl = ri->vctrl; 310118a15c76SSteen Hegelund enum vcap_type vt = ri->admin->vtype; 310218a15c76SSteen Hegelund const struct vcap_set *keyfield_set; 310318a15c76SSteen Hegelund struct vcap_client_keyfield kf = {}; 310418a15c76SSteen Hegelund u32 value, mask; 310518a15c76SSteen Hegelund int err, idx; 310618a15c76SSteen Hegelund 310718a15c76SSteen Hegelund err = vcap_rule_get_key(&ri->data, VCAP_KF_TYPE, &kf); 310818a15c76SSteen Hegelund if (err) 310918a15c76SSteen Hegelund return err; 311018a15c76SSteen Hegelund 311118a15c76SSteen Hegelund if (kf.ctrl.type == VCAP_FIELD_BIT) { 311218a15c76SSteen Hegelund value = kf.data.u1.value; 311318a15c76SSteen Hegelund mask = kf.data.u1.mask; 311418a15c76SSteen Hegelund } else if (kf.ctrl.type == VCAP_FIELD_U32) { 311518a15c76SSteen Hegelund value = kf.data.u32.value; 311618a15c76SSteen Hegelund mask = kf.data.u32.mask; 311718a15c76SSteen Hegelund } else { 311818a15c76SSteen Hegelund return -EINVAL; 311918a15c76SSteen Hegelund } 312018a15c76SSteen Hegelund 312118a15c76SSteen Hegelund keyfield_set = vctrl->vcaps[vt].keyfield_set; 312218a15c76SSteen Hegelund for (idx = 0; idx < vctrl->vcaps[vt].keyfield_set_size; ++idx) { 312318a15c76SSteen Hegelund if (keyfield_set[idx].sw_per_item != ri->keyset_sw) 312418a15c76SSteen Hegelund continue; 312518a15c76SSteen Hegelund 312618a15c76SSteen Hegelund if (keyfield_set[idx].type_id == (u8)-1) { 312718a15c76SSteen Hegelund vcap_keyset_list_add(matches, idx); 312818a15c76SSteen Hegelund continue; 312918a15c76SSteen Hegelund } 313018a15c76SSteen Hegelund 313118a15c76SSteen Hegelund if ((keyfield_set[idx].type_id & mask) == value) 313218a15c76SSteen Hegelund vcap_keyset_list_add(matches, idx); 313318a15c76SSteen Hegelund } 313418a15c76SSteen Hegelund if (matches->cnt > 0) 313518a15c76SSteen Hegelund return 0; 313618a15c76SSteen Hegelund 313718a15c76SSteen Hegelund return -EINVAL; 313818a15c76SSteen Hegelund } 313918a15c76SSteen Hegelund 314027d293ccSSteen Hegelund /* Collect packet counts from all rules with the same cookie */ 314127d293ccSSteen Hegelund int vcap_get_rule_count_by_cookie(struct vcap_control *vctrl, 314227d293ccSSteen Hegelund struct vcap_counter *ctr, u64 cookie) 314327d293ccSSteen Hegelund { 314427d293ccSSteen Hegelund struct vcap_rule_internal *ri; 314527d293ccSSteen Hegelund struct vcap_counter temp = {}; 314627d293ccSSteen Hegelund struct vcap_admin *admin; 314727d293ccSSteen Hegelund int err; 314827d293ccSSteen Hegelund 314927d293ccSSteen Hegelund err = vcap_api_check(vctrl); 315027d293ccSSteen Hegelund if (err) 315127d293ccSSteen Hegelund return err; 315227d293ccSSteen Hegelund 315327d293ccSSteen Hegelund /* Iterate all rules in each VCAP instance */ 315427d293ccSSteen Hegelund list_for_each_entry(admin, &vctrl->list, list) { 315527d293ccSSteen Hegelund mutex_lock(&admin->lock); 315627d293ccSSteen Hegelund list_for_each_entry(ri, &admin->rules, list) { 315727d293ccSSteen Hegelund if (ri->data.cookie != cookie) 315827d293ccSSteen Hegelund continue; 315927d293ccSSteen Hegelund 316027d293ccSSteen Hegelund err = vcap_read_counter(ri, &temp); 316127d293ccSSteen Hegelund if (err) 316227d293ccSSteen Hegelund goto unlock; 316327d293ccSSteen Hegelund ctr->value += temp.value; 316427d293ccSSteen Hegelund 316527d293ccSSteen Hegelund /* Reset the rule counter */ 316627d293ccSSteen Hegelund temp.value = 0; 316727d293ccSSteen Hegelund temp.sticky = 0; 316827d293ccSSteen Hegelund err = vcap_write_counter(ri, &temp); 316927d293ccSSteen Hegelund if (err) 317027d293ccSSteen Hegelund goto unlock; 317127d293ccSSteen Hegelund } 317227d293ccSSteen Hegelund mutex_unlock(&admin->lock); 317327d293ccSSteen Hegelund } 317427d293ccSSteen Hegelund return err; 317527d293ccSSteen Hegelund 317627d293ccSSteen Hegelund unlock: 317727d293ccSSteen Hegelund mutex_unlock(&admin->lock); 317827d293ccSSteen Hegelund return err; 317927d293ccSSteen Hegelund } 318027d293ccSSteen Hegelund EXPORT_SYMBOL_GPL(vcap_get_rule_count_by_cookie); 318127d293ccSSteen Hegelund 3182465a38a2SSteen Hegelund static int vcap_rule_mod_key(struct vcap_rule *rule, 3183465a38a2SSteen Hegelund enum vcap_key_field key, 3184465a38a2SSteen Hegelund enum vcap_field_type ftype, 3185465a38a2SSteen Hegelund struct vcap_client_keyfield_data *data) 3186465a38a2SSteen Hegelund { 3187465a38a2SSteen Hegelund struct vcap_client_keyfield *field; 3188465a38a2SSteen Hegelund 3189465a38a2SSteen Hegelund field = vcap_find_keyfield(rule, key); 3190465a38a2SSteen Hegelund if (!field) 3191465a38a2SSteen Hegelund return vcap_rule_add_key(rule, key, ftype, data); 319233e3a273SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 3193465a38a2SSteen Hegelund return 0; 3194465a38a2SSteen Hegelund } 3195465a38a2SSteen Hegelund 3196465a38a2SSteen Hegelund /* Modify a 32 bit key field with value and mask in the rule */ 3197465a38a2SSteen Hegelund int vcap_rule_mod_key_u32(struct vcap_rule *rule, enum vcap_key_field key, 3198465a38a2SSteen Hegelund u32 value, u32 mask) 3199465a38a2SSteen Hegelund { 3200465a38a2SSteen Hegelund struct vcap_client_keyfield_data data; 3201465a38a2SSteen Hegelund 3202465a38a2SSteen Hegelund data.u32.value = value; 3203465a38a2SSteen Hegelund data.u32.mask = mask; 3204465a38a2SSteen Hegelund return vcap_rule_mod_key(rule, key, VCAP_FIELD_U32, &data); 3205465a38a2SSteen Hegelund } 3206465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_mod_key_u32); 3207465a38a2SSteen Hegelund 3208465a38a2SSteen Hegelund static int vcap_rule_mod_action(struct vcap_rule *rule, 3209465a38a2SSteen Hegelund enum vcap_action_field action, 3210465a38a2SSteen Hegelund enum vcap_field_type ftype, 3211465a38a2SSteen Hegelund struct vcap_client_actionfield_data *data) 3212465a38a2SSteen Hegelund { 3213465a38a2SSteen Hegelund struct vcap_client_actionfield *field; 3214465a38a2SSteen Hegelund 3215465a38a2SSteen Hegelund field = vcap_find_actionfield(rule, action); 3216465a38a2SSteen Hegelund if (!field) 3217465a38a2SSteen Hegelund return vcap_rule_add_action(rule, action, ftype, data); 321833e3a273SSteen Hegelund memcpy(&field->data, data, sizeof(field->data)); 3219465a38a2SSteen Hegelund return 0; 3220465a38a2SSteen Hegelund } 3221465a38a2SSteen Hegelund 3222465a38a2SSteen Hegelund /* Modify a 32 bit action field with value in the rule */ 3223465a38a2SSteen Hegelund int vcap_rule_mod_action_u32(struct vcap_rule *rule, 3224465a38a2SSteen Hegelund enum vcap_action_field action, 3225465a38a2SSteen Hegelund u32 value) 3226465a38a2SSteen Hegelund { 3227465a38a2SSteen Hegelund struct vcap_client_actionfield_data data; 3228465a38a2SSteen Hegelund 3229465a38a2SSteen Hegelund data.u32.value = value; 3230465a38a2SSteen Hegelund return vcap_rule_mod_action(rule, action, VCAP_FIELD_U32, &data); 3231465a38a2SSteen Hegelund } 3232465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_rule_mod_action_u32); 3233465a38a2SSteen Hegelund 3234465a38a2SSteen Hegelund /* Drop keys in a keylist and any keys that are not supported by the keyset */ 3235465a38a2SSteen Hegelund int vcap_filter_rule_keys(struct vcap_rule *rule, 3236465a38a2SSteen Hegelund enum vcap_key_field keylist[], int length, 3237465a38a2SSteen Hegelund bool drop_unsupported) 3238465a38a2SSteen Hegelund { 3239465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(rule); 3240465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf, *next_ckf; 3241465a38a2SSteen Hegelund const struct vcap_field *fields; 3242465a38a2SSteen Hegelund enum vcap_key_field key; 3243465a38a2SSteen Hegelund int err = 0; 3244465a38a2SSteen Hegelund int idx; 3245465a38a2SSteen Hegelund 3246465a38a2SSteen Hegelund if (length > 0) { 3247465a38a2SSteen Hegelund err = -EEXIST; 3248465a38a2SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, 3249465a38a2SSteen Hegelund &ri->data.keyfields, ctrl.list) { 3250465a38a2SSteen Hegelund key = ckf->ctrl.key; 3251465a38a2SSteen Hegelund for (idx = 0; idx < length; ++idx) 3252465a38a2SSteen Hegelund if (key == keylist[idx]) { 3253465a38a2SSteen Hegelund list_del(&ckf->ctrl.list); 3254465a38a2SSteen Hegelund kfree(ckf); 3255465a38a2SSteen Hegelund idx++; 3256465a38a2SSteen Hegelund err = 0; 3257465a38a2SSteen Hegelund } 3258465a38a2SSteen Hegelund } 3259465a38a2SSteen Hegelund } 3260465a38a2SSteen Hegelund if (drop_unsupported) { 3261465a38a2SSteen Hegelund err = -EEXIST; 3262465a38a2SSteen Hegelund fields = vcap_keyfields(ri->vctrl, ri->admin->vtype, 3263465a38a2SSteen Hegelund rule->keyset); 3264465a38a2SSteen Hegelund if (!fields) 3265465a38a2SSteen Hegelund return err; 3266465a38a2SSteen Hegelund list_for_each_entry_safe(ckf, next_ckf, 3267465a38a2SSteen Hegelund &ri->data.keyfields, ctrl.list) { 3268465a38a2SSteen Hegelund key = ckf->ctrl.key; 3269465a38a2SSteen Hegelund if (fields[key].width == 0) { 3270465a38a2SSteen Hegelund list_del(&ckf->ctrl.list); 3271465a38a2SSteen Hegelund kfree(ckf); 3272465a38a2SSteen Hegelund err = 0; 3273465a38a2SSteen Hegelund } 3274465a38a2SSteen Hegelund } 3275465a38a2SSteen Hegelund } 3276465a38a2SSteen Hegelund return err; 3277465a38a2SSteen Hegelund } 3278465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_filter_rule_keys); 3279465a38a2SSteen Hegelund 3280465a38a2SSteen Hegelund /* Make a full copy of an existing rule with a new rule id */ 3281465a38a2SSteen Hegelund struct vcap_rule *vcap_copy_rule(struct vcap_rule *erule) 3282465a38a2SSteen Hegelund { 3283465a38a2SSteen Hegelund struct vcap_rule_internal *ri = to_intrule(erule); 3284465a38a2SSteen Hegelund struct vcap_client_actionfield *caf; 3285465a38a2SSteen Hegelund struct vcap_client_keyfield *ckf; 3286465a38a2SSteen Hegelund struct vcap_rule *rule; 3287465a38a2SSteen Hegelund int err; 3288465a38a2SSteen Hegelund 3289465a38a2SSteen Hegelund err = vcap_api_check(ri->vctrl); 3290465a38a2SSteen Hegelund if (err) 3291465a38a2SSteen Hegelund return ERR_PTR(err); 3292465a38a2SSteen Hegelund 3293465a38a2SSteen Hegelund rule = vcap_alloc_rule(ri->vctrl, ri->ndev, ri->data.vcap_chain_id, 3294465a38a2SSteen Hegelund ri->data.user, ri->data.priority, 0); 3295465a38a2SSteen Hegelund if (IS_ERR(rule)) 3296465a38a2SSteen Hegelund return rule; 3297465a38a2SSteen Hegelund 3298465a38a2SSteen Hegelund list_for_each_entry(ckf, &ri->data.keyfields, ctrl.list) { 3299465a38a2SSteen Hegelund /* Add a key duplicate in the new rule */ 3300465a38a2SSteen Hegelund err = vcap_rule_add_key(rule, 3301465a38a2SSteen Hegelund ckf->ctrl.key, 3302465a38a2SSteen Hegelund ckf->ctrl.type, 3303465a38a2SSteen Hegelund &ckf->data); 3304465a38a2SSteen Hegelund if (err) 3305465a38a2SSteen Hegelund goto err; 3306465a38a2SSteen Hegelund } 3307465a38a2SSteen Hegelund 3308465a38a2SSteen Hegelund list_for_each_entry(caf, &ri->data.actionfields, ctrl.list) { 3309465a38a2SSteen Hegelund /* Add a action duplicate in the new rule */ 3310465a38a2SSteen Hegelund err = vcap_rule_add_action(rule, 3311465a38a2SSteen Hegelund caf->ctrl.action, 3312465a38a2SSteen Hegelund caf->ctrl.type, 3313465a38a2SSteen Hegelund &caf->data); 3314465a38a2SSteen Hegelund if (err) 3315465a38a2SSteen Hegelund goto err; 3316465a38a2SSteen Hegelund } 3317465a38a2SSteen Hegelund return rule; 3318465a38a2SSteen Hegelund err: 3319465a38a2SSteen Hegelund vcap_free_rule(rule); 3320465a38a2SSteen Hegelund return ERR_PTR(err); 3321465a38a2SSteen Hegelund } 3322465a38a2SSteen Hegelund EXPORT_SYMBOL_GPL(vcap_copy_rule); 3323465a38a2SSteen Hegelund 332467d63751SSteen Hegelund #ifdef CONFIG_VCAP_KUNIT_TEST 332567d63751SSteen Hegelund #include "vcap_api_kunit.c" 332667d63751SSteen Hegelund #endif 3327