1 /* 2 * This file is part of the Chelsio T4 Ethernet driver for Linux. 3 * 4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. 5 * 6 * This software is available to you under a choice of one of two 7 * licenses. You may choose to be licensed under the terms of the GNU 8 * General Public License (GPL) Version 2, available from the file 9 * COPYING in the main directory of this source tree, or the 10 * OpenIB.org BSD license below: 11 * 12 * Redistribution and use in source and binary forms, with or 13 * without modification, are permitted provided that the following 14 * conditions are met: 15 * 16 * - Redistributions of source code must retain the above 17 * copyright notice, this list of conditions and the following 18 * disclaimer. 19 * 20 * - Redistributions in binary form must reproduce the above 21 * copyright notice, this list of conditions and the following 22 * disclaimer in the documentation and/or other materials 23 * provided with the distribution. 24 * 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 32 * SOFTWARE. 33 */ 34 #include <net/ipv6.h> 35 36 #include "cxgb4.h" 37 #include "t4_regs.h" 38 #include "t4_tcb.h" 39 #include "t4_values.h" 40 #include "clip_tbl.h" 41 #include "l2t.h" 42 #include "smt.h" 43 #include "t4fw_api.h" 44 #include "cxgb4_filter.h" 45 46 static inline bool is_field_set(u32 val, u32 mask) 47 { 48 return val || mask; 49 } 50 51 static inline bool unsupported(u32 conf, u32 conf_mask, u32 val, u32 mask) 52 { 53 return !(conf & conf_mask) && is_field_set(val, mask); 54 } 55 56 static int set_tcb_field(struct adapter *adap, struct filter_entry *f, 57 unsigned int ftid, u16 word, u64 mask, u64 val, 58 int no_reply) 59 { 60 struct cpl_set_tcb_field *req; 61 struct sk_buff *skb; 62 63 skb = alloc_skb(sizeof(struct cpl_set_tcb_field), GFP_ATOMIC); 64 if (!skb) 65 return -ENOMEM; 66 67 req = (struct cpl_set_tcb_field *)__skb_put_zero(skb, sizeof(*req)); 68 INIT_TP_WR_CPL(req, CPL_SET_TCB_FIELD, ftid); 69 req->reply_ctrl = htons(REPLY_CHAN_V(0) | 70 QUEUENO_V(adap->sge.fw_evtq.abs_id) | 71 NO_REPLY_V(no_reply)); 72 req->word_cookie = htons(TCB_WORD_V(word) | TCB_COOKIE_V(ftid)); 73 req->mask = cpu_to_be64(mask); 74 req->val = cpu_to_be64(val); 75 set_wr_txq(skb, CPL_PRIORITY_CONTROL, f->fs.val.iport & 0x3); 76 t4_ofld_send(adap, skb); 77 return 0; 78 } 79 80 /* Set one of the t_flags bits in the TCB. 81 */ 82 static int set_tcb_tflag(struct adapter *adap, struct filter_entry *f, 83 unsigned int ftid, unsigned int bit_pos, 84 unsigned int val, int no_reply) 85 { 86 return set_tcb_field(adap, f, ftid, TCB_T_FLAGS_W, 1ULL << bit_pos, 87 (unsigned long long)val << bit_pos, no_reply); 88 } 89 90 static void mk_abort_req_ulp(struct cpl_abort_req *abort_req, unsigned int tid) 91 { 92 struct ulp_txpkt *txpkt = (struct ulp_txpkt *)abort_req; 93 struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1); 94 95 txpkt->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | ULP_TXPKT_DEST_V(0)); 96 txpkt->len = htonl(DIV_ROUND_UP(sizeof(*abort_req), 16)); 97 sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM)); 98 sc->len = htonl(sizeof(*abort_req) - sizeof(struct work_request_hdr)); 99 OPCODE_TID(abort_req) = htonl(MK_OPCODE_TID(CPL_ABORT_REQ, tid)); 100 abort_req->rsvd0 = htonl(0); 101 abort_req->rsvd1 = 0; 102 abort_req->cmd = CPL_ABORT_NO_RST; 103 } 104 105 static void mk_abort_rpl_ulp(struct cpl_abort_rpl *abort_rpl, unsigned int tid) 106 { 107 struct ulp_txpkt *txpkt = (struct ulp_txpkt *)abort_rpl; 108 struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1); 109 110 txpkt->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | ULP_TXPKT_DEST_V(0)); 111 txpkt->len = htonl(DIV_ROUND_UP(sizeof(*abort_rpl), 16)); 112 sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM)); 113 sc->len = htonl(sizeof(*abort_rpl) - sizeof(struct work_request_hdr)); 114 OPCODE_TID(abort_rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, tid)); 115 abort_rpl->rsvd0 = htonl(0); 116 abort_rpl->rsvd1 = 0; 117 abort_rpl->cmd = CPL_ABORT_NO_RST; 118 } 119 120 static void mk_set_tcb_ulp(struct filter_entry *f, 121 struct cpl_set_tcb_field *req, 122 unsigned int word, u64 mask, u64 val, 123 u8 cookie, int no_reply) 124 { 125 struct ulp_txpkt *txpkt = (struct ulp_txpkt *)req; 126 struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1); 127 128 txpkt->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | ULP_TXPKT_DEST_V(0)); 129 txpkt->len = htonl(DIV_ROUND_UP(sizeof(*req), 16)); 130 sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM)); 131 sc->len = htonl(sizeof(*req) - sizeof(struct work_request_hdr)); 132 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, f->tid)); 133 req->reply_ctrl = htons(NO_REPLY_V(no_reply) | REPLY_CHAN_V(0) | 134 QUEUENO_V(0)); 135 req->word_cookie = htons(TCB_WORD_V(word) | TCB_COOKIE_V(cookie)); 136 req->mask = cpu_to_be64(mask); 137 req->val = cpu_to_be64(val); 138 sc = (struct ulptx_idata *)(req + 1); 139 sc->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_NOOP)); 140 sc->len = htonl(0); 141 } 142 143 static int configure_filter_smac(struct adapter *adap, struct filter_entry *f) 144 { 145 int err; 146 147 /* do a set-tcb for smac-sel and CWR bit.. */ 148 err = set_tcb_tflag(adap, f, f->tid, TF_CCTRL_CWR_S, 1, 1); 149 if (err) 150 goto smac_err; 151 152 err = set_tcb_field(adap, f, f->tid, TCB_SMAC_SEL_W, 153 TCB_SMAC_SEL_V(TCB_SMAC_SEL_M), 154 TCB_SMAC_SEL_V(f->smt->idx), 1); 155 if (!err) 156 return 0; 157 158 smac_err: 159 dev_err(adap->pdev_dev, "filter %u smac config failed with error %u\n", 160 f->tid, err); 161 return err; 162 } 163 164 static void set_nat_params(struct adapter *adap, struct filter_entry *f, 165 unsigned int tid, bool dip, bool sip, bool dp, 166 bool sp) 167 { 168 if (dip) { 169 if (f->fs.type) { 170 set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W, 171 WORD_MASK, f->fs.nat_lip[15] | 172 f->fs.nat_lip[14] << 8 | 173 f->fs.nat_lip[13] << 16 | 174 f->fs.nat_lip[12] << 24, 1); 175 176 set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 1, 177 WORD_MASK, f->fs.nat_lip[11] | 178 f->fs.nat_lip[10] << 8 | 179 f->fs.nat_lip[9] << 16 | 180 f->fs.nat_lip[8] << 24, 1); 181 182 set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 2, 183 WORD_MASK, f->fs.nat_lip[7] | 184 f->fs.nat_lip[6] << 8 | 185 f->fs.nat_lip[5] << 16 | 186 f->fs.nat_lip[4] << 24, 1); 187 188 set_tcb_field(adap, f, tid, TCB_SND_UNA_RAW_W + 3, 189 WORD_MASK, f->fs.nat_lip[3] | 190 f->fs.nat_lip[2] << 8 | 191 f->fs.nat_lip[1] << 16 | 192 f->fs.nat_lip[0] << 24, 1); 193 } else { 194 set_tcb_field(adap, f, tid, TCB_RX_FRAG3_LEN_RAW_W, 195 WORD_MASK, f->fs.nat_lip[3] | 196 f->fs.nat_lip[2] << 8 | 197 f->fs.nat_lip[1] << 16 | 198 f->fs.nat_lip[0] << 24, 1); 199 } 200 } 201 202 if (sip) { 203 if (f->fs.type) { 204 set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W, 205 WORD_MASK, f->fs.nat_fip[15] | 206 f->fs.nat_fip[14] << 8 | 207 f->fs.nat_fip[13] << 16 | 208 f->fs.nat_fip[12] << 24, 1); 209 210 set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 1, 211 WORD_MASK, f->fs.nat_fip[11] | 212 f->fs.nat_fip[10] << 8 | 213 f->fs.nat_fip[9] << 16 | 214 f->fs.nat_fip[8] << 24, 1); 215 216 set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 2, 217 WORD_MASK, f->fs.nat_fip[7] | 218 f->fs.nat_fip[6] << 8 | 219 f->fs.nat_fip[5] << 16 | 220 f->fs.nat_fip[4] << 24, 1); 221 222 set_tcb_field(adap, f, tid, TCB_RX_FRAG2_PTR_RAW_W + 3, 223 WORD_MASK, f->fs.nat_fip[3] | 224 f->fs.nat_fip[2] << 8 | 225 f->fs.nat_fip[1] << 16 | 226 f->fs.nat_fip[0] << 24, 1); 227 228 } else { 229 set_tcb_field(adap, f, tid, 230 TCB_RX_FRAG3_START_IDX_OFFSET_RAW_W, 231 WORD_MASK, f->fs.nat_fip[3] | 232 f->fs.nat_fip[2] << 8 | 233 f->fs.nat_fip[1] << 16 | 234 f->fs.nat_fip[0] << 24, 1); 235 } 236 } 237 238 set_tcb_field(adap, f, tid, TCB_PDU_HDR_LEN_W, WORD_MASK, 239 (dp ? f->fs.nat_lport : 0) | 240 (sp ? f->fs.nat_fport << 16 : 0), 1); 241 } 242 243 /* Validate filter spec against configuration done on the card. */ 244 static int validate_filter(struct net_device *dev, 245 struct ch_filter_specification *fs) 246 { 247 struct adapter *adapter = netdev2adap(dev); 248 u32 fconf, iconf; 249 250 /* Check for unconfigured fields being used. */ 251 fconf = adapter->params.tp.vlan_pri_map; 252 iconf = adapter->params.tp.ingress_config; 253 254 if (unsupported(fconf, FCOE_F, fs->val.fcoe, fs->mask.fcoe) || 255 unsupported(fconf, PORT_F, fs->val.iport, fs->mask.iport) || 256 unsupported(fconf, TOS_F, fs->val.tos, fs->mask.tos) || 257 unsupported(fconf, ETHERTYPE_F, fs->val.ethtype, 258 fs->mask.ethtype) || 259 unsupported(fconf, MACMATCH_F, fs->val.macidx, fs->mask.macidx) || 260 unsupported(fconf, MPSHITTYPE_F, fs->val.matchtype, 261 fs->mask.matchtype) || 262 unsupported(fconf, FRAGMENTATION_F, fs->val.frag, fs->mask.frag) || 263 unsupported(fconf, PROTOCOL_F, fs->val.proto, fs->mask.proto) || 264 unsupported(fconf, VNIC_ID_F, fs->val.pfvf_vld, 265 fs->mask.pfvf_vld) || 266 unsupported(fconf, VNIC_ID_F, fs->val.ovlan_vld, 267 fs->mask.ovlan_vld) || 268 unsupported(fconf, VNIC_ID_F, fs->val.encap_vld, 269 fs->mask.encap_vld) || 270 unsupported(fconf, VLAN_F, fs->val.ivlan_vld, fs->mask.ivlan_vld)) 271 return -EOPNOTSUPP; 272 273 /* T4 inconveniently uses the same FT_VNIC_ID_W bits for both the Outer 274 * VLAN Tag and PF/VF/VFvld fields based on VNIC_F being set 275 * in TP_INGRESS_CONFIG. Hense the somewhat crazy checks 276 * below. Additionally, since the T4 firmware interface also 277 * carries that overlap, we need to translate any PF/VF 278 * specification into that internal format below. 279 */ 280 if ((is_field_set(fs->val.pfvf_vld, fs->mask.pfvf_vld) && 281 is_field_set(fs->val.ovlan_vld, fs->mask.ovlan_vld)) || 282 (is_field_set(fs->val.pfvf_vld, fs->mask.pfvf_vld) && 283 is_field_set(fs->val.encap_vld, fs->mask.encap_vld)) || 284 (is_field_set(fs->val.ovlan_vld, fs->mask.ovlan_vld) && 285 is_field_set(fs->val.encap_vld, fs->mask.encap_vld))) 286 return -EOPNOTSUPP; 287 if (unsupported(iconf, VNIC_F, fs->val.pfvf_vld, fs->mask.pfvf_vld) || 288 (is_field_set(fs->val.ovlan_vld, fs->mask.ovlan_vld) && 289 (iconf & VNIC_F))) 290 return -EOPNOTSUPP; 291 if (fs->val.pf > 0x7 || fs->val.vf > 0x7f) 292 return -ERANGE; 293 fs->mask.pf &= 0x7; 294 fs->mask.vf &= 0x7f; 295 296 /* If the user is requesting that the filter action loop 297 * matching packets back out one of our ports, make sure that 298 * the egress port is in range. 299 */ 300 if (fs->action == FILTER_SWITCH && 301 fs->eport >= adapter->params.nports) 302 return -ERANGE; 303 304 /* Don't allow various trivially obvious bogus out-of-range values... */ 305 if (fs->val.iport >= adapter->params.nports) 306 return -ERANGE; 307 308 /* T4 doesn't support removing VLAN Tags for loop back filters. */ 309 if (is_t4(adapter->params.chip) && 310 fs->action == FILTER_SWITCH && 311 (fs->newvlan == VLAN_REMOVE || 312 fs->newvlan == VLAN_REWRITE)) 313 return -EOPNOTSUPP; 314 315 if (fs->val.encap_vld && 316 CHELSIO_CHIP_VERSION(adapter->params.chip) < CHELSIO_T6) 317 return -EOPNOTSUPP; 318 return 0; 319 } 320 321 static int get_filter_steerq(struct net_device *dev, 322 struct ch_filter_specification *fs) 323 { 324 struct adapter *adapter = netdev2adap(dev); 325 int iq; 326 327 /* If the user has requested steering matching Ingress Packets 328 * to a specific Queue Set, we need to make sure it's in range 329 * for the port and map that into the Absolute Queue ID of the 330 * Queue Set's Response Queue. 331 */ 332 if (!fs->dirsteer) { 333 if (fs->iq) 334 return -EINVAL; 335 iq = 0; 336 } else { 337 struct port_info *pi = netdev_priv(dev); 338 339 /* If the iq id is greater than the number of qsets, 340 * then assume it is an absolute qid. 341 */ 342 if (fs->iq < pi->nqsets) 343 iq = adapter->sge.ethrxq[pi->first_qset + 344 fs->iq].rspq.abs_id; 345 else 346 iq = fs->iq; 347 } 348 349 return iq; 350 } 351 352 static int get_filter_count(struct adapter *adapter, unsigned int fidx, 353 u64 *pkts, u64 *bytes, bool hash) 354 { 355 unsigned int tcb_base, tcbaddr; 356 unsigned int word_offset; 357 struct filter_entry *f; 358 __be64 be64_byte_count; 359 int ret; 360 361 tcb_base = t4_read_reg(adapter, TP_CMM_TCB_BASE_A); 362 if (is_hashfilter(adapter) && hash) { 363 if (fidx < adapter->tids.ntids) { 364 f = adapter->tids.tid_tab[fidx]; 365 if (!f) 366 return -EINVAL; 367 } else { 368 return -E2BIG; 369 } 370 } else { 371 if ((fidx != (adapter->tids.nftids + 372 adapter->tids.nsftids - 1)) && 373 fidx >= adapter->tids.nftids) 374 return -E2BIG; 375 376 f = &adapter->tids.ftid_tab[fidx]; 377 if (!f->valid) 378 return -EINVAL; 379 } 380 tcbaddr = tcb_base + f->tid * TCB_SIZE; 381 382 spin_lock(&adapter->win0_lock); 383 if (is_t4(adapter->params.chip)) { 384 __be64 be64_count; 385 386 /* T4 doesn't maintain byte counts in hw */ 387 *bytes = 0; 388 389 /* Get pkts */ 390 word_offset = 4; 391 ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0, 392 tcbaddr + (word_offset * sizeof(__be32)), 393 sizeof(be64_count), 394 (__be32 *)&be64_count, 395 T4_MEMORY_READ); 396 if (ret < 0) 397 goto out; 398 *pkts = be64_to_cpu(be64_count); 399 } else { 400 __be32 be32_count; 401 402 /* Get bytes */ 403 word_offset = 4; 404 ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0, 405 tcbaddr + (word_offset * sizeof(__be32)), 406 sizeof(be64_byte_count), 407 &be64_byte_count, 408 T4_MEMORY_READ); 409 if (ret < 0) 410 goto out; 411 *bytes = be64_to_cpu(be64_byte_count); 412 413 /* Get pkts */ 414 word_offset = 6; 415 ret = t4_memory_rw(adapter, MEMWIN_NIC, MEM_EDC0, 416 tcbaddr + (word_offset * sizeof(__be32)), 417 sizeof(be32_count), 418 &be32_count, 419 T4_MEMORY_READ); 420 if (ret < 0) 421 goto out; 422 *pkts = (u64)be32_to_cpu(be32_count); 423 } 424 425 out: 426 spin_unlock(&adapter->win0_lock); 427 return ret; 428 } 429 430 int cxgb4_get_filter_counters(struct net_device *dev, unsigned int fidx, 431 u64 *hitcnt, u64 *bytecnt, bool hash) 432 { 433 struct adapter *adapter = netdev2adap(dev); 434 435 return get_filter_count(adapter, fidx, hitcnt, bytecnt, hash); 436 } 437 438 int cxgb4_get_free_ftid(struct net_device *dev, int family) 439 { 440 struct adapter *adap = netdev2adap(dev); 441 struct tid_info *t = &adap->tids; 442 int ftid; 443 444 spin_lock_bh(&t->ftid_lock); 445 if (family == PF_INET) { 446 ftid = find_first_zero_bit(t->ftid_bmap, t->nftids); 447 if (ftid >= t->nftids) 448 ftid = -1; 449 } else { 450 if (is_t6(adap->params.chip)) { 451 ftid = bitmap_find_free_region(t->ftid_bmap, 452 t->nftids, 1); 453 if (ftid < 0) 454 goto out_unlock; 455 456 /* this is only a lookup, keep the found region 457 * unallocated 458 */ 459 bitmap_release_region(t->ftid_bmap, ftid, 1); 460 } else { 461 ftid = bitmap_find_free_region(t->ftid_bmap, 462 t->nftids, 2); 463 if (ftid < 0) 464 goto out_unlock; 465 466 bitmap_release_region(t->ftid_bmap, ftid, 2); 467 } 468 } 469 out_unlock: 470 spin_unlock_bh(&t->ftid_lock); 471 return ftid; 472 } 473 474 static int cxgb4_set_ftid(struct tid_info *t, int fidx, int family, 475 unsigned int chip_ver) 476 { 477 spin_lock_bh(&t->ftid_lock); 478 479 if (test_bit(fidx, t->ftid_bmap)) { 480 spin_unlock_bh(&t->ftid_lock); 481 return -EBUSY; 482 } 483 484 if (family == PF_INET) { 485 __set_bit(fidx, t->ftid_bmap); 486 } else { 487 if (chip_ver < CHELSIO_T6) 488 bitmap_allocate_region(t->ftid_bmap, fidx, 2); 489 else 490 bitmap_allocate_region(t->ftid_bmap, fidx, 1); 491 } 492 493 spin_unlock_bh(&t->ftid_lock); 494 return 0; 495 } 496 497 static void cxgb4_clear_ftid(struct tid_info *t, int fidx, int family, 498 unsigned int chip_ver) 499 { 500 spin_lock_bh(&t->ftid_lock); 501 if (family == PF_INET) { 502 __clear_bit(fidx, t->ftid_bmap); 503 } else { 504 if (chip_ver < CHELSIO_T6) 505 bitmap_release_region(t->ftid_bmap, fidx, 2); 506 else 507 bitmap_release_region(t->ftid_bmap, fidx, 1); 508 } 509 spin_unlock_bh(&t->ftid_lock); 510 } 511 512 /* Delete the filter at a specified index. */ 513 static int del_filter_wr(struct adapter *adapter, int fidx) 514 { 515 struct filter_entry *f = &adapter->tids.ftid_tab[fidx]; 516 struct fw_filter_wr *fwr; 517 struct sk_buff *skb; 518 unsigned int len; 519 520 len = sizeof(*fwr); 521 522 skb = alloc_skb(len, GFP_KERNEL); 523 if (!skb) 524 return -ENOMEM; 525 526 fwr = __skb_put(skb, len); 527 t4_mk_filtdelwr(f->tid, fwr, (adapter->flags & SHUTTING_DOWN) ? -1 528 : adapter->sge.fw_evtq.abs_id); 529 530 /* Mark the filter as "pending" and ship off the Filter Work Request. 531 * When we get the Work Request Reply we'll clear the pending status. 532 */ 533 f->pending = 1; 534 t4_mgmt_tx(adapter, skb); 535 return 0; 536 } 537 538 /* Send a Work Request to write the filter at a specified index. We construct 539 * a Firmware Filter Work Request to have the work done and put the indicated 540 * filter into "pending" mode which will prevent any further actions against 541 * it till we get a reply from the firmware on the completion status of the 542 * request. 543 */ 544 int set_filter_wr(struct adapter *adapter, int fidx) 545 { 546 struct filter_entry *f = &adapter->tids.ftid_tab[fidx]; 547 struct fw_filter2_wr *fwr; 548 struct sk_buff *skb; 549 550 skb = alloc_skb(sizeof(*fwr), GFP_KERNEL); 551 if (!skb) 552 return -ENOMEM; 553 554 /* If the new filter requires loopback Destination MAC and/or VLAN 555 * rewriting then we need to allocate a Layer 2 Table (L2T) entry for 556 * the filter. 557 */ 558 if (f->fs.newdmac || f->fs.newvlan) { 559 /* allocate L2T entry for new filter */ 560 f->l2t = t4_l2t_alloc_switching(adapter, f->fs.vlan, 561 f->fs.eport, f->fs.dmac); 562 if (!f->l2t) { 563 kfree_skb(skb); 564 return -ENOMEM; 565 } 566 } 567 568 /* If the new filter requires loopback Source MAC rewriting then 569 * we need to allocate a SMT entry for the filter. 570 */ 571 if (f->fs.newsmac) { 572 f->smt = cxgb4_smt_alloc_switching(f->dev, f->fs.smac); 573 if (!f->smt) { 574 if (f->l2t) { 575 cxgb4_l2t_release(f->l2t); 576 f->l2t = NULL; 577 } 578 kfree_skb(skb); 579 return -ENOMEM; 580 } 581 } 582 583 fwr = __skb_put_zero(skb, sizeof(*fwr)); 584 585 /* It would be nice to put most of the following in t4_hw.c but most 586 * of the work is translating the cxgbtool ch_filter_specification 587 * into the Work Request and the definition of that structure is 588 * currently in cxgbtool.h which isn't appropriate to pull into the 589 * common code. We may eventually try to come up with a more neutral 590 * filter specification structure but for now it's easiest to simply 591 * put this fairly direct code in line ... 592 */ 593 if (adapter->params.filter2_wr_support) 594 fwr->op_pkd = htonl(FW_WR_OP_V(FW_FILTER2_WR)); 595 else 596 fwr->op_pkd = htonl(FW_WR_OP_V(FW_FILTER_WR)); 597 fwr->len16_pkd = htonl(FW_WR_LEN16_V(sizeof(*fwr) / 16)); 598 fwr->tid_to_iq = 599 htonl(FW_FILTER_WR_TID_V(f->tid) | 600 FW_FILTER_WR_RQTYPE_V(f->fs.type) | 601 FW_FILTER_WR_NOREPLY_V(0) | 602 FW_FILTER_WR_IQ_V(f->fs.iq)); 603 fwr->del_filter_to_l2tix = 604 htonl(FW_FILTER_WR_RPTTID_V(f->fs.rpttid) | 605 FW_FILTER_WR_DROP_V(f->fs.action == FILTER_DROP) | 606 FW_FILTER_WR_DIRSTEER_V(f->fs.dirsteer) | 607 FW_FILTER_WR_MASKHASH_V(f->fs.maskhash) | 608 FW_FILTER_WR_DIRSTEERHASH_V(f->fs.dirsteerhash) | 609 FW_FILTER_WR_LPBK_V(f->fs.action == FILTER_SWITCH) | 610 FW_FILTER_WR_DMAC_V(f->fs.newdmac) | 611 FW_FILTER_WR_INSVLAN_V(f->fs.newvlan == VLAN_INSERT || 612 f->fs.newvlan == VLAN_REWRITE) | 613 FW_FILTER_WR_RMVLAN_V(f->fs.newvlan == VLAN_REMOVE || 614 f->fs.newvlan == VLAN_REWRITE) | 615 FW_FILTER_WR_HITCNTS_V(f->fs.hitcnts) | 616 FW_FILTER_WR_TXCHAN_V(f->fs.eport) | 617 FW_FILTER_WR_PRIO_V(f->fs.prio) | 618 FW_FILTER_WR_L2TIX_V(f->l2t ? f->l2t->idx : 0)); 619 fwr->ethtype = htons(f->fs.val.ethtype); 620 fwr->ethtypem = htons(f->fs.mask.ethtype); 621 fwr->frag_to_ovlan_vldm = 622 (FW_FILTER_WR_FRAG_V(f->fs.val.frag) | 623 FW_FILTER_WR_FRAGM_V(f->fs.mask.frag) | 624 FW_FILTER_WR_IVLAN_VLD_V(f->fs.val.ivlan_vld) | 625 FW_FILTER_WR_OVLAN_VLD_V(f->fs.val.ovlan_vld) | 626 FW_FILTER_WR_IVLAN_VLDM_V(f->fs.mask.ivlan_vld) | 627 FW_FILTER_WR_OVLAN_VLDM_V(f->fs.mask.ovlan_vld)); 628 fwr->smac_sel = 0; 629 fwr->rx_chan_rx_rpl_iq = 630 htons(FW_FILTER_WR_RX_CHAN_V(0) | 631 FW_FILTER_WR_RX_RPL_IQ_V(adapter->sge.fw_evtq.abs_id)); 632 fwr->maci_to_matchtypem = 633 htonl(FW_FILTER_WR_MACI_V(f->fs.val.macidx) | 634 FW_FILTER_WR_MACIM_V(f->fs.mask.macidx) | 635 FW_FILTER_WR_FCOE_V(f->fs.val.fcoe) | 636 FW_FILTER_WR_FCOEM_V(f->fs.mask.fcoe) | 637 FW_FILTER_WR_PORT_V(f->fs.val.iport) | 638 FW_FILTER_WR_PORTM_V(f->fs.mask.iport) | 639 FW_FILTER_WR_MATCHTYPE_V(f->fs.val.matchtype) | 640 FW_FILTER_WR_MATCHTYPEM_V(f->fs.mask.matchtype)); 641 fwr->ptcl = f->fs.val.proto; 642 fwr->ptclm = f->fs.mask.proto; 643 fwr->ttyp = f->fs.val.tos; 644 fwr->ttypm = f->fs.mask.tos; 645 fwr->ivlan = htons(f->fs.val.ivlan); 646 fwr->ivlanm = htons(f->fs.mask.ivlan); 647 fwr->ovlan = htons(f->fs.val.ovlan); 648 fwr->ovlanm = htons(f->fs.mask.ovlan); 649 memcpy(fwr->lip, f->fs.val.lip, sizeof(fwr->lip)); 650 memcpy(fwr->lipm, f->fs.mask.lip, sizeof(fwr->lipm)); 651 memcpy(fwr->fip, f->fs.val.fip, sizeof(fwr->fip)); 652 memcpy(fwr->fipm, f->fs.mask.fip, sizeof(fwr->fipm)); 653 fwr->lp = htons(f->fs.val.lport); 654 fwr->lpm = htons(f->fs.mask.lport); 655 fwr->fp = htons(f->fs.val.fport); 656 fwr->fpm = htons(f->fs.mask.fport); 657 658 if (adapter->params.filter2_wr_support) { 659 fwr->natmode_to_ulp_type = 660 FW_FILTER2_WR_ULP_TYPE_V(f->fs.nat_mode ? 661 ULP_MODE_TCPDDP : 662 ULP_MODE_NONE) | 663 FW_FILTER2_WR_NATMODE_V(f->fs.nat_mode); 664 memcpy(fwr->newlip, f->fs.nat_lip, sizeof(fwr->newlip)); 665 memcpy(fwr->newfip, f->fs.nat_fip, sizeof(fwr->newfip)); 666 fwr->newlport = htons(f->fs.nat_lport); 667 fwr->newfport = htons(f->fs.nat_fport); 668 } 669 670 /* Mark the filter as "pending" and ship off the Filter Work Request. 671 * When we get the Work Request Reply we'll clear the pending status. 672 */ 673 f->pending = 1; 674 set_wr_txq(skb, CPL_PRIORITY_CONTROL, f->fs.val.iport & 0x3); 675 t4_ofld_send(adapter, skb); 676 return 0; 677 } 678 679 /* Return an error number if the indicated filter isn't writable ... */ 680 int writable_filter(struct filter_entry *f) 681 { 682 if (f->locked) 683 return -EPERM; 684 if (f->pending) 685 return -EBUSY; 686 687 return 0; 688 } 689 690 /* Delete the filter at the specified index (if valid). The checks for all 691 * the common problems with doing this like the filter being locked, currently 692 * pending in another operation, etc. 693 */ 694 int delete_filter(struct adapter *adapter, unsigned int fidx) 695 { 696 struct filter_entry *f; 697 int ret; 698 699 if (fidx >= adapter->tids.nftids + adapter->tids.nsftids) 700 return -EINVAL; 701 702 f = &adapter->tids.ftid_tab[fidx]; 703 ret = writable_filter(f); 704 if (ret) 705 return ret; 706 if (f->valid) 707 return del_filter_wr(adapter, fidx); 708 709 return 0; 710 } 711 712 /* Clear a filter and release any of its resources that we own. This also 713 * clears the filter's "pending" status. 714 */ 715 void clear_filter(struct adapter *adap, struct filter_entry *f) 716 { 717 struct port_info *pi = netdev_priv(f->dev); 718 719 /* If the new or old filter have loopback rewriteing rules then we'll 720 * need to free any existing L2T, SMT, CLIP entries of filter 721 * rule. 722 */ 723 if (f->l2t) 724 cxgb4_l2t_release(f->l2t); 725 726 if (f->smt) 727 cxgb4_smt_release(f->smt); 728 729 if (f->fs.val.encap_vld && f->fs.val.ovlan_vld) 730 if (atomic_dec_and_test(&adap->mps_encap[f->fs.val.ovlan & 731 0x1ff].refcnt)) 732 t4_free_encap_mac_filt(adap, pi->viid, 733 f->fs.val.ovlan & 0x1ff, 0); 734 735 if ((f->fs.hash || is_t6(adap->params.chip)) && f->fs.type) 736 cxgb4_clip_release(f->dev, (const u32 *)&f->fs.val.lip, 1); 737 738 /* The zeroing of the filter rule below clears the filter valid, 739 * pending, locked flags, l2t pointer, etc. so it's all we need for 740 * this operation. 741 */ 742 memset(f, 0, sizeof(*f)); 743 } 744 745 void clear_all_filters(struct adapter *adapter) 746 { 747 unsigned int i; 748 749 if (adapter->tids.ftid_tab) { 750 struct filter_entry *f = &adapter->tids.ftid_tab[0]; 751 unsigned int max_ftid = adapter->tids.nftids + 752 adapter->tids.nsftids; 753 754 for (i = 0; i < max_ftid; i++, f++) 755 if (f->valid || f->pending) 756 clear_filter(adapter, f); 757 } 758 } 759 760 /* Fill up default masks for set match fields. */ 761 static void fill_default_mask(struct ch_filter_specification *fs) 762 { 763 unsigned int lip = 0, lip_mask = 0; 764 unsigned int fip = 0, fip_mask = 0; 765 unsigned int i; 766 767 if (fs->val.iport && !fs->mask.iport) 768 fs->mask.iport |= ~0; 769 if (fs->val.fcoe && !fs->mask.fcoe) 770 fs->mask.fcoe |= ~0; 771 if (fs->val.matchtype && !fs->mask.matchtype) 772 fs->mask.matchtype |= ~0; 773 if (fs->val.macidx && !fs->mask.macidx) 774 fs->mask.macidx |= ~0; 775 if (fs->val.ethtype && !fs->mask.ethtype) 776 fs->mask.ethtype |= ~0; 777 if (fs->val.ivlan && !fs->mask.ivlan) 778 fs->mask.ivlan |= ~0; 779 if (fs->val.ovlan && !fs->mask.ovlan) 780 fs->mask.ovlan |= ~0; 781 if (fs->val.frag && !fs->mask.frag) 782 fs->mask.frag |= ~0; 783 if (fs->val.tos && !fs->mask.tos) 784 fs->mask.tos |= ~0; 785 if (fs->val.proto && !fs->mask.proto) 786 fs->mask.proto |= ~0; 787 788 for (i = 0; i < ARRAY_SIZE(fs->val.lip); i++) { 789 lip |= fs->val.lip[i]; 790 lip_mask |= fs->mask.lip[i]; 791 fip |= fs->val.fip[i]; 792 fip_mask |= fs->mask.fip[i]; 793 } 794 795 if (lip && !lip_mask) 796 memset(fs->mask.lip, ~0, sizeof(fs->mask.lip)); 797 798 if (fip && !fip_mask) 799 memset(fs->mask.fip, ~0, sizeof(fs->mask.lip)); 800 801 if (fs->val.lport && !fs->mask.lport) 802 fs->mask.lport = ~0; 803 if (fs->val.fport && !fs->mask.fport) 804 fs->mask.fport = ~0; 805 } 806 807 static bool is_addr_all_mask(u8 *ipmask, int family) 808 { 809 if (family == AF_INET) { 810 struct in_addr *addr; 811 812 addr = (struct in_addr *)ipmask; 813 if (addr->s_addr == 0xffffffff) 814 return true; 815 } else if (family == AF_INET6) { 816 struct in6_addr *addr6; 817 818 addr6 = (struct in6_addr *)ipmask; 819 if (addr6->s6_addr32[0] == 0xffffffff && 820 addr6->s6_addr32[1] == 0xffffffff && 821 addr6->s6_addr32[2] == 0xffffffff && 822 addr6->s6_addr32[3] == 0xffffffff) 823 return true; 824 } 825 return false; 826 } 827 828 static bool is_inaddr_any(u8 *ip, int family) 829 { 830 int addr_type; 831 832 if (family == AF_INET) { 833 struct in_addr *addr; 834 835 addr = (struct in_addr *)ip; 836 if (addr->s_addr == htonl(INADDR_ANY)) 837 return true; 838 } else if (family == AF_INET6) { 839 struct in6_addr *addr6; 840 841 addr6 = (struct in6_addr *)ip; 842 addr_type = ipv6_addr_type((const struct in6_addr *) 843 &addr6); 844 if (addr_type == IPV6_ADDR_ANY) 845 return true; 846 } 847 return false; 848 } 849 850 bool is_filter_exact_match(struct adapter *adap, 851 struct ch_filter_specification *fs) 852 { 853 struct tp_params *tp = &adap->params.tp; 854 u64 hash_filter_mask = tp->hash_filter_mask; 855 u64 ntuple_mask = 0; 856 857 if (!is_hashfilter(adap)) 858 return false; 859 860 /* Keep tunnel VNI match disabled for hash-filters for now */ 861 if (fs->mask.encap_vld) 862 return false; 863 864 if (fs->type) { 865 if (is_inaddr_any(fs->val.fip, AF_INET6) || 866 !is_addr_all_mask(fs->mask.fip, AF_INET6)) 867 return false; 868 869 if (is_inaddr_any(fs->val.lip, AF_INET6) || 870 !is_addr_all_mask(fs->mask.lip, AF_INET6)) 871 return false; 872 } else { 873 if (is_inaddr_any(fs->val.fip, AF_INET) || 874 !is_addr_all_mask(fs->mask.fip, AF_INET)) 875 return false; 876 877 if (is_inaddr_any(fs->val.lip, AF_INET) || 878 !is_addr_all_mask(fs->mask.lip, AF_INET)) 879 return false; 880 } 881 882 if (!fs->val.lport || fs->mask.lport != 0xffff) 883 return false; 884 885 if (!fs->val.fport || fs->mask.fport != 0xffff) 886 return false; 887 888 /* calculate tuple mask and compare with mask configured in hw */ 889 if (tp->fcoe_shift >= 0) 890 ntuple_mask |= (u64)fs->mask.fcoe << tp->fcoe_shift; 891 892 if (tp->port_shift >= 0) 893 ntuple_mask |= (u64)fs->mask.iport << tp->port_shift; 894 895 if (tp->vnic_shift >= 0) { 896 if ((adap->params.tp.ingress_config & VNIC_F)) 897 ntuple_mask |= (u64)fs->mask.pfvf_vld << tp->vnic_shift; 898 else 899 ntuple_mask |= (u64)fs->mask.ovlan_vld << 900 tp->vnic_shift; 901 } 902 903 if (tp->vlan_shift >= 0) 904 ntuple_mask |= (u64)fs->mask.ivlan << tp->vlan_shift; 905 906 if (tp->tos_shift >= 0) 907 ntuple_mask |= (u64)fs->mask.tos << tp->tos_shift; 908 909 if (tp->protocol_shift >= 0) 910 ntuple_mask |= (u64)fs->mask.proto << tp->protocol_shift; 911 912 if (tp->ethertype_shift >= 0) 913 ntuple_mask |= (u64)fs->mask.ethtype << tp->ethertype_shift; 914 915 if (tp->macmatch_shift >= 0) 916 ntuple_mask |= (u64)fs->mask.macidx << tp->macmatch_shift; 917 918 if (tp->matchtype_shift >= 0) 919 ntuple_mask |= (u64)fs->mask.matchtype << tp->matchtype_shift; 920 921 if (tp->frag_shift >= 0) 922 ntuple_mask |= (u64)fs->mask.frag << tp->frag_shift; 923 924 if (ntuple_mask != hash_filter_mask) 925 return false; 926 927 return true; 928 } 929 930 static u64 hash_filter_ntuple(struct ch_filter_specification *fs, 931 struct net_device *dev) 932 { 933 struct adapter *adap = netdev2adap(dev); 934 struct tp_params *tp = &adap->params.tp; 935 u64 ntuple = 0; 936 937 /* Initialize each of the fields which we care about which are present 938 * in the Compressed Filter Tuple. 939 */ 940 if (tp->vlan_shift >= 0 && fs->mask.ivlan) 941 ntuple |= (FT_VLAN_VLD_F | fs->val.ivlan) << tp->vlan_shift; 942 943 if (tp->port_shift >= 0 && fs->mask.iport) 944 ntuple |= (u64)fs->val.iport << tp->port_shift; 945 946 if (tp->protocol_shift >= 0) { 947 if (!fs->val.proto) 948 ntuple |= (u64)IPPROTO_TCP << tp->protocol_shift; 949 else 950 ntuple |= (u64)fs->val.proto << tp->protocol_shift; 951 } 952 953 if (tp->tos_shift >= 0 && fs->mask.tos) 954 ntuple |= (u64)(fs->val.tos) << tp->tos_shift; 955 956 if (tp->vnic_shift >= 0) { 957 if ((adap->params.tp.ingress_config & USE_ENC_IDX_F) && 958 fs->mask.encap_vld) 959 ntuple |= (u64)((fs->val.encap_vld << 16) | 960 (fs->val.ovlan)) << tp->vnic_shift; 961 else if ((adap->params.tp.ingress_config & VNIC_F) && 962 fs->mask.pfvf_vld) 963 ntuple |= (u64)((fs->val.pfvf_vld << 16) | 964 (fs->val.pf << 13) | 965 (fs->val.vf)) << tp->vnic_shift; 966 else 967 ntuple |= (u64)((fs->val.ovlan_vld << 16) | 968 (fs->val.ovlan)) << tp->vnic_shift; 969 } 970 971 if (tp->macmatch_shift >= 0 && fs->mask.macidx) 972 ntuple |= (u64)(fs->val.macidx) << tp->macmatch_shift; 973 974 if (tp->ethertype_shift >= 0 && fs->mask.ethtype) 975 ntuple |= (u64)(fs->val.ethtype) << tp->ethertype_shift; 976 977 if (tp->matchtype_shift >= 0 && fs->mask.matchtype) 978 ntuple |= (u64)(fs->val.matchtype) << tp->matchtype_shift; 979 980 if (tp->frag_shift >= 0 && fs->mask.frag) 981 ntuple |= (u64)(fs->val.frag) << tp->frag_shift; 982 983 if (tp->fcoe_shift >= 0 && fs->mask.fcoe) 984 ntuple |= (u64)(fs->val.fcoe) << tp->fcoe_shift; 985 return ntuple; 986 } 987 988 static void mk_act_open_req6(struct filter_entry *f, struct sk_buff *skb, 989 unsigned int qid_filterid, struct adapter *adap) 990 { 991 struct cpl_t6_act_open_req6 *t6req = NULL; 992 struct cpl_act_open_req6 *req = NULL; 993 994 t6req = (struct cpl_t6_act_open_req6 *)__skb_put(skb, sizeof(*t6req)); 995 INIT_TP_WR(t6req, 0); 996 req = (struct cpl_act_open_req6 *)t6req; 997 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, qid_filterid)); 998 req->local_port = cpu_to_be16(f->fs.val.lport); 999 req->peer_port = cpu_to_be16(f->fs.val.fport); 1000 req->local_ip_hi = *(__be64 *)(&f->fs.val.lip); 1001 req->local_ip_lo = *(((__be64 *)&f->fs.val.lip) + 1); 1002 req->peer_ip_hi = *(__be64 *)(&f->fs.val.fip); 1003 req->peer_ip_lo = *(((__be64 *)&f->fs.val.fip) + 1); 1004 req->opt0 = cpu_to_be64(NAGLE_V(f->fs.newvlan == VLAN_REMOVE || 1005 f->fs.newvlan == VLAN_REWRITE) | 1006 DELACK_V(f->fs.hitcnts) | 1007 L2T_IDX_V(f->l2t ? f->l2t->idx : 0) | 1008 SMAC_SEL_V((cxgb4_port_viid(f->dev) & 1009 0x7F) << 1) | 1010 TX_CHAN_V(f->fs.eport) | 1011 NO_CONG_V(f->fs.rpttid) | 1012 ULP_MODE_V(f->fs.nat_mode ? 1013 ULP_MODE_TCPDDP : ULP_MODE_NONE) | 1014 TCAM_BYPASS_F | NON_OFFLOAD_F); 1015 t6req->params = cpu_to_be64(FILTER_TUPLE_V(hash_filter_ntuple(&f->fs, 1016 f->dev))); 1017 t6req->opt2 = htonl(RSS_QUEUE_VALID_F | 1018 RSS_QUEUE_V(f->fs.iq) | 1019 TX_QUEUE_V(f->fs.nat_mode) | 1020 T5_OPT_2_VALID_F | 1021 RX_CHANNEL_F | 1022 CONG_CNTRL_V((f->fs.action == FILTER_DROP) | 1023 (f->fs.dirsteer << 1)) | 1024 PACE_V((f->fs.maskhash) | 1025 ((f->fs.dirsteerhash) << 1)) | 1026 CCTRL_ECN_V(f->fs.action == FILTER_SWITCH)); 1027 } 1028 1029 static void mk_act_open_req(struct filter_entry *f, struct sk_buff *skb, 1030 unsigned int qid_filterid, struct adapter *adap) 1031 { 1032 struct cpl_t6_act_open_req *t6req = NULL; 1033 struct cpl_act_open_req *req = NULL; 1034 1035 t6req = (struct cpl_t6_act_open_req *)__skb_put(skb, sizeof(*t6req)); 1036 INIT_TP_WR(t6req, 0); 1037 req = (struct cpl_act_open_req *)t6req; 1038 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, qid_filterid)); 1039 req->local_port = cpu_to_be16(f->fs.val.lport); 1040 req->peer_port = cpu_to_be16(f->fs.val.fport); 1041 memcpy(&req->local_ip, f->fs.val.lip, 4); 1042 memcpy(&req->peer_ip, f->fs.val.fip, 4); 1043 req->opt0 = cpu_to_be64(NAGLE_V(f->fs.newvlan == VLAN_REMOVE || 1044 f->fs.newvlan == VLAN_REWRITE) | 1045 DELACK_V(f->fs.hitcnts) | 1046 L2T_IDX_V(f->l2t ? f->l2t->idx : 0) | 1047 SMAC_SEL_V((cxgb4_port_viid(f->dev) & 1048 0x7F) << 1) | 1049 TX_CHAN_V(f->fs.eport) | 1050 NO_CONG_V(f->fs.rpttid) | 1051 ULP_MODE_V(f->fs.nat_mode ? 1052 ULP_MODE_TCPDDP : ULP_MODE_NONE) | 1053 TCAM_BYPASS_F | NON_OFFLOAD_F); 1054 1055 t6req->params = cpu_to_be64(FILTER_TUPLE_V(hash_filter_ntuple(&f->fs, 1056 f->dev))); 1057 t6req->opt2 = htonl(RSS_QUEUE_VALID_F | 1058 RSS_QUEUE_V(f->fs.iq) | 1059 TX_QUEUE_V(f->fs.nat_mode) | 1060 T5_OPT_2_VALID_F | 1061 RX_CHANNEL_F | 1062 CONG_CNTRL_V((f->fs.action == FILTER_DROP) | 1063 (f->fs.dirsteer << 1)) | 1064 PACE_V((f->fs.maskhash) | 1065 ((f->fs.dirsteerhash) << 1)) | 1066 CCTRL_ECN_V(f->fs.action == FILTER_SWITCH)); 1067 } 1068 1069 static int cxgb4_set_hash_filter(struct net_device *dev, 1070 struct ch_filter_specification *fs, 1071 struct filter_ctx *ctx) 1072 { 1073 struct adapter *adapter = netdev2adap(dev); 1074 struct port_info *pi = netdev_priv(dev); 1075 struct tid_info *t = &adapter->tids; 1076 struct filter_entry *f; 1077 struct sk_buff *skb; 1078 int iq, atid, size; 1079 int ret = 0; 1080 u32 iconf; 1081 1082 fill_default_mask(fs); 1083 ret = validate_filter(dev, fs); 1084 if (ret) 1085 return ret; 1086 1087 iq = get_filter_steerq(dev, fs); 1088 if (iq < 0) 1089 return iq; 1090 1091 f = kzalloc(sizeof(*f), GFP_KERNEL); 1092 if (!f) 1093 return -ENOMEM; 1094 1095 f->fs = *fs; 1096 f->ctx = ctx; 1097 f->dev = dev; 1098 f->fs.iq = iq; 1099 1100 /* If the new filter requires loopback Destination MAC and/or VLAN 1101 * rewriting then we need to allocate a Layer 2 Table (L2T) entry for 1102 * the filter. 1103 */ 1104 if (f->fs.newdmac || f->fs.newvlan) { 1105 /* allocate L2T entry for new filter */ 1106 f->l2t = t4_l2t_alloc_switching(adapter, f->fs.vlan, 1107 f->fs.eport, f->fs.dmac); 1108 if (!f->l2t) { 1109 ret = -ENOMEM; 1110 goto out_err; 1111 } 1112 } 1113 1114 /* If the new filter requires loopback Source MAC rewriting then 1115 * we need to allocate a SMT entry for the filter. 1116 */ 1117 if (f->fs.newsmac) { 1118 f->smt = cxgb4_smt_alloc_switching(f->dev, f->fs.smac); 1119 if (!f->smt) { 1120 if (f->l2t) { 1121 cxgb4_l2t_release(f->l2t); 1122 f->l2t = NULL; 1123 } 1124 ret = -ENOMEM; 1125 goto free_l2t; 1126 } 1127 } 1128 1129 atid = cxgb4_alloc_atid(t, f); 1130 if (atid < 0) { 1131 ret = atid; 1132 goto free_smt; 1133 } 1134 1135 iconf = adapter->params.tp.ingress_config; 1136 if (iconf & VNIC_F) { 1137 f->fs.val.ovlan = (fs->val.pf << 13) | fs->val.vf; 1138 f->fs.mask.ovlan = (fs->mask.pf << 13) | fs->mask.vf; 1139 f->fs.val.ovlan_vld = fs->val.pfvf_vld; 1140 f->fs.mask.ovlan_vld = fs->mask.pfvf_vld; 1141 } else if (iconf & USE_ENC_IDX_F) { 1142 if (f->fs.val.encap_vld) { 1143 struct port_info *pi = netdev_priv(f->dev); 1144 u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 }; 1145 1146 /* allocate MPS TCAM entry */ 1147 ret = t4_alloc_encap_mac_filt(adapter, pi->viid, 1148 match_all_mac, 1149 match_all_mac, 1150 f->fs.val.vni, 1151 f->fs.mask.vni, 1152 0, 1, 1); 1153 if (ret < 0) 1154 goto free_atid; 1155 1156 atomic_inc(&adapter->mps_encap[ret].refcnt); 1157 f->fs.val.ovlan = ret; 1158 f->fs.mask.ovlan = 0xffff; 1159 f->fs.val.ovlan_vld = 1; 1160 f->fs.mask.ovlan_vld = 1; 1161 } 1162 } 1163 1164 size = sizeof(struct cpl_t6_act_open_req); 1165 if (f->fs.type) { 1166 ret = cxgb4_clip_get(f->dev, (const u32 *)&f->fs.val.lip, 1); 1167 if (ret) 1168 goto free_mps; 1169 1170 skb = alloc_skb(size, GFP_KERNEL); 1171 if (!skb) { 1172 ret = -ENOMEM; 1173 goto free_clip; 1174 } 1175 1176 mk_act_open_req6(f, skb, 1177 ((adapter->sge.fw_evtq.abs_id << 14) | atid), 1178 adapter); 1179 } else { 1180 skb = alloc_skb(size, GFP_KERNEL); 1181 if (!skb) { 1182 ret = -ENOMEM; 1183 goto free_mps; 1184 } 1185 1186 mk_act_open_req(f, skb, 1187 ((adapter->sge.fw_evtq.abs_id << 14) | atid), 1188 adapter); 1189 } 1190 1191 f->pending = 1; 1192 set_wr_txq(skb, CPL_PRIORITY_SETUP, f->fs.val.iport & 0x3); 1193 t4_ofld_send(adapter, skb); 1194 return 0; 1195 1196 free_clip: 1197 cxgb4_clip_release(f->dev, (const u32 *)&f->fs.val.lip, 1); 1198 1199 free_mps: 1200 if (f->fs.val.encap_vld && f->fs.val.ovlan_vld) 1201 t4_free_encap_mac_filt(adapter, pi->viid, f->fs.val.ovlan, 1); 1202 1203 free_atid: 1204 cxgb4_free_atid(t, atid); 1205 1206 free_smt: 1207 if (f->smt) { 1208 cxgb4_smt_release(f->smt); 1209 f->smt = NULL; 1210 } 1211 1212 free_l2t: 1213 if (f->l2t) { 1214 cxgb4_l2t_release(f->l2t); 1215 f->l2t = NULL; 1216 } 1217 1218 out_err: 1219 kfree(f); 1220 return ret; 1221 } 1222 1223 /* Check a Chelsio Filter Request for validity, convert it into our internal 1224 * format and send it to the hardware. Return 0 on success, an error number 1225 * otherwise. We attach any provided filter operation context to the internal 1226 * filter specification in order to facilitate signaling completion of the 1227 * operation. 1228 */ 1229 int __cxgb4_set_filter(struct net_device *dev, int filter_id, 1230 struct ch_filter_specification *fs, 1231 struct filter_ctx *ctx) 1232 { 1233 struct adapter *adapter = netdev2adap(dev); 1234 unsigned int chip_ver = CHELSIO_CHIP_VERSION(adapter->params.chip); 1235 unsigned int max_fidx, fidx; 1236 struct filter_entry *f; 1237 u32 iconf; 1238 int iq, ret; 1239 1240 if (fs->hash) { 1241 if (is_hashfilter(adapter)) 1242 return cxgb4_set_hash_filter(dev, fs, ctx); 1243 netdev_err(dev, "%s: Exact-match filters only supported with Hash Filter configuration\n", 1244 __func__); 1245 return -EINVAL; 1246 } 1247 1248 max_fidx = adapter->tids.nftids; 1249 if (filter_id != (max_fidx + adapter->tids.nsftids - 1) && 1250 filter_id >= max_fidx) 1251 return -E2BIG; 1252 1253 fill_default_mask(fs); 1254 1255 ret = validate_filter(dev, fs); 1256 if (ret) 1257 return ret; 1258 1259 iq = get_filter_steerq(dev, fs); 1260 if (iq < 0) 1261 return iq; 1262 1263 /* IPv6 filters occupy four slots and must be aligned on 1264 * four-slot boundaries. IPv4 filters only occupy a single 1265 * slot and have no alignment requirements but writing a new 1266 * IPv4 filter into the middle of an existing IPv6 filter 1267 * requires clearing the old IPv6 filter and hence we prevent 1268 * insertion. 1269 */ 1270 if (fs->type == 0) { /* IPv4 */ 1271 /* For T6, If our IPv4 filter isn't being written to a 1272 * multiple of two filter index and there's an IPv6 1273 * filter at the multiple of 2 base slot, then we need 1274 * to delete that IPv6 filter ... 1275 * For adapters below T6, IPv6 filter occupies 4 entries. 1276 * Hence we need to delete the filter in multiple of 4 slot. 1277 */ 1278 if (chip_ver < CHELSIO_T6) 1279 fidx = filter_id & ~0x3; 1280 else 1281 fidx = filter_id & ~0x1; 1282 1283 if (fidx != filter_id && 1284 adapter->tids.ftid_tab[fidx].fs.type) { 1285 f = &adapter->tids.ftid_tab[fidx]; 1286 if (f->valid) { 1287 dev_err(adapter->pdev_dev, 1288 "Invalid location. IPv6 requires 4 slots and is occupying slots %u to %u\n", 1289 fidx, fidx + 3); 1290 return -EINVAL; 1291 } 1292 } 1293 } else { /* IPv6 */ 1294 if (chip_ver < CHELSIO_T6) { 1295 /* Ensure that the IPv6 filter is aligned on a 1296 * multiple of 4 boundary. 1297 */ 1298 if (filter_id & 0x3) { 1299 dev_err(adapter->pdev_dev, 1300 "Invalid location. IPv6 must be aligned on a 4-slot boundary\n"); 1301 return -EINVAL; 1302 } 1303 1304 /* Check all except the base overlapping IPv4 filter 1305 * slots. 1306 */ 1307 for (fidx = filter_id + 1; fidx < filter_id + 4; 1308 fidx++) { 1309 f = &adapter->tids.ftid_tab[fidx]; 1310 if (f->valid) { 1311 dev_err(adapter->pdev_dev, 1312 "Invalid location. IPv6 requires 4 slots and an IPv4 filter exists at %u\n", 1313 fidx); 1314 return -EBUSY; 1315 } 1316 } 1317 } else { 1318 /* For T6, CLIP being enabled, IPv6 filter would occupy 1319 * 2 entries. 1320 */ 1321 if (filter_id & 0x1) 1322 return -EINVAL; 1323 /* Check overlapping IPv4 filter slot */ 1324 fidx = filter_id + 1; 1325 f = &adapter->tids.ftid_tab[fidx]; 1326 if (f->valid) { 1327 pr_err("%s: IPv6 filter requires 2 indices. IPv4 filter already present at %d. Please remove IPv4 filter first.\n", 1328 __func__, fidx); 1329 return -EBUSY; 1330 } 1331 } 1332 } 1333 1334 /* Check to make sure that provided filter index is not 1335 * already in use by someone else 1336 */ 1337 f = &adapter->tids.ftid_tab[filter_id]; 1338 if (f->valid) 1339 return -EBUSY; 1340 1341 fidx = filter_id + adapter->tids.ftid_base; 1342 ret = cxgb4_set_ftid(&adapter->tids, filter_id, 1343 fs->type ? PF_INET6 : PF_INET, 1344 chip_ver); 1345 if (ret) 1346 return ret; 1347 1348 /* Check t make sure the filter requested is writable ... */ 1349 ret = writable_filter(f); 1350 if (ret) { 1351 /* Clear the bits we have set above */ 1352 cxgb4_clear_ftid(&adapter->tids, filter_id, 1353 fs->type ? PF_INET6 : PF_INET, 1354 chip_ver); 1355 return ret; 1356 } 1357 1358 if (is_t6(adapter->params.chip) && fs->type && 1359 ipv6_addr_type((const struct in6_addr *)fs->val.lip) != 1360 IPV6_ADDR_ANY) { 1361 ret = cxgb4_clip_get(dev, (const u32 *)&fs->val.lip, 1); 1362 if (ret) { 1363 cxgb4_clear_ftid(&adapter->tids, filter_id, PF_INET6, 1364 chip_ver); 1365 return ret; 1366 } 1367 } 1368 1369 /* Convert the filter specification into our internal format. 1370 * We copy the PF/VF specification into the Outer VLAN field 1371 * here so the rest of the code -- including the interface to 1372 * the firmware -- doesn't have to constantly do these checks. 1373 */ 1374 f->fs = *fs; 1375 f->fs.iq = iq; 1376 f->dev = dev; 1377 1378 iconf = adapter->params.tp.ingress_config; 1379 if (iconf & VNIC_F) { 1380 f->fs.val.ovlan = (fs->val.pf << 13) | fs->val.vf; 1381 f->fs.mask.ovlan = (fs->mask.pf << 13) | fs->mask.vf; 1382 f->fs.val.ovlan_vld = fs->val.pfvf_vld; 1383 f->fs.mask.ovlan_vld = fs->mask.pfvf_vld; 1384 } else if (iconf & USE_ENC_IDX_F) { 1385 if (f->fs.val.encap_vld) { 1386 struct port_info *pi = netdev_priv(f->dev); 1387 u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 }; 1388 1389 /* allocate MPS TCAM entry */ 1390 ret = t4_alloc_encap_mac_filt(adapter, pi->viid, 1391 match_all_mac, 1392 match_all_mac, 1393 f->fs.val.vni, 1394 f->fs.mask.vni, 1395 0, 1, 1); 1396 if (ret < 0) 1397 goto free_clip; 1398 1399 atomic_inc(&adapter->mps_encap[ret].refcnt); 1400 f->fs.val.ovlan = ret; 1401 f->fs.mask.ovlan = 0x1ff; 1402 f->fs.val.ovlan_vld = 1; 1403 f->fs.mask.ovlan_vld = 1; 1404 } 1405 } 1406 1407 /* Attempt to set the filter. If we don't succeed, we clear 1408 * it and return the failure. 1409 */ 1410 f->ctx = ctx; 1411 f->tid = fidx; /* Save the actual tid */ 1412 ret = set_filter_wr(adapter, filter_id); 1413 if (ret) { 1414 cxgb4_clear_ftid(&adapter->tids, filter_id, 1415 fs->type ? PF_INET6 : PF_INET, 1416 chip_ver); 1417 clear_filter(adapter, f); 1418 } 1419 1420 return ret; 1421 1422 free_clip: 1423 if (is_t6(adapter->params.chip) && f->fs.type) 1424 cxgb4_clip_release(f->dev, (const u32 *)&f->fs.val.lip, 1); 1425 cxgb4_clear_ftid(&adapter->tids, filter_id, 1426 fs->type ? PF_INET6 : PF_INET, chip_ver); 1427 return ret; 1428 } 1429 1430 static int cxgb4_del_hash_filter(struct net_device *dev, int filter_id, 1431 struct filter_ctx *ctx) 1432 { 1433 struct adapter *adapter = netdev2adap(dev); 1434 struct tid_info *t = &adapter->tids; 1435 struct cpl_abort_req *abort_req; 1436 struct cpl_abort_rpl *abort_rpl; 1437 struct cpl_set_tcb_field *req; 1438 struct ulptx_idata *aligner; 1439 struct work_request_hdr *wr; 1440 struct filter_entry *f; 1441 struct sk_buff *skb; 1442 unsigned int wrlen; 1443 int ret; 1444 1445 netdev_dbg(dev, "%s: filter_id = %d ; nftids = %d\n", 1446 __func__, filter_id, adapter->tids.nftids); 1447 1448 if (filter_id > adapter->tids.ntids) 1449 return -E2BIG; 1450 1451 f = lookup_tid(t, filter_id); 1452 if (!f) { 1453 netdev_err(dev, "%s: no filter entry for filter_id = %d", 1454 __func__, filter_id); 1455 return -EINVAL; 1456 } 1457 1458 ret = writable_filter(f); 1459 if (ret) 1460 return ret; 1461 1462 if (!f->valid) 1463 return -EINVAL; 1464 1465 f->ctx = ctx; 1466 f->pending = 1; 1467 wrlen = roundup(sizeof(*wr) + (sizeof(*req) + sizeof(*aligner)) 1468 + sizeof(*abort_req) + sizeof(*abort_rpl), 16); 1469 skb = alloc_skb(wrlen, GFP_KERNEL); 1470 if (!skb) { 1471 netdev_err(dev, "%s: could not allocate skb ..\n", __func__); 1472 return -ENOMEM; 1473 } 1474 set_wr_txq(skb, CPL_PRIORITY_CONTROL, f->fs.val.iport & 0x3); 1475 req = (struct cpl_set_tcb_field *)__skb_put(skb, wrlen); 1476 INIT_ULPTX_WR(req, wrlen, 0, 0); 1477 wr = (struct work_request_hdr *)req; 1478 wr++; 1479 req = (struct cpl_set_tcb_field *)wr; 1480 mk_set_tcb_ulp(f, req, TCB_RSS_INFO_W, TCB_RSS_INFO_V(TCB_RSS_INFO_M), 1481 TCB_RSS_INFO_V(adapter->sge.fw_evtq.abs_id), 0, 1); 1482 aligner = (struct ulptx_idata *)(req + 1); 1483 abort_req = (struct cpl_abort_req *)(aligner + 1); 1484 mk_abort_req_ulp(abort_req, f->tid); 1485 abort_rpl = (struct cpl_abort_rpl *)(abort_req + 1); 1486 mk_abort_rpl_ulp(abort_rpl, f->tid); 1487 t4_ofld_send(adapter, skb); 1488 return 0; 1489 } 1490 1491 /* Check a delete filter request for validity and send it to the hardware. 1492 * Return 0 on success, an error number otherwise. We attach any provided 1493 * filter operation context to the internal filter specification in order to 1494 * facilitate signaling completion of the operation. 1495 */ 1496 int __cxgb4_del_filter(struct net_device *dev, int filter_id, 1497 struct ch_filter_specification *fs, 1498 struct filter_ctx *ctx) 1499 { 1500 struct adapter *adapter = netdev2adap(dev); 1501 unsigned int chip_ver = CHELSIO_CHIP_VERSION(adapter->params.chip); 1502 struct filter_entry *f; 1503 unsigned int max_fidx; 1504 int ret; 1505 1506 if (fs && fs->hash) { 1507 if (is_hashfilter(adapter)) 1508 return cxgb4_del_hash_filter(dev, filter_id, ctx); 1509 netdev_err(dev, "%s: Exact-match filters only supported with Hash Filter configuration\n", 1510 __func__); 1511 return -EINVAL; 1512 } 1513 1514 max_fidx = adapter->tids.nftids; 1515 if (filter_id != (max_fidx + adapter->tids.nsftids - 1) && 1516 filter_id >= max_fidx) 1517 return -E2BIG; 1518 1519 f = &adapter->tids.ftid_tab[filter_id]; 1520 ret = writable_filter(f); 1521 if (ret) 1522 return ret; 1523 1524 if (f->valid) { 1525 f->ctx = ctx; 1526 cxgb4_clear_ftid(&adapter->tids, filter_id, 1527 f->fs.type ? PF_INET6 : PF_INET, 1528 chip_ver); 1529 return del_filter_wr(adapter, filter_id); 1530 } 1531 1532 /* If the caller has passed in a Completion Context then we need to 1533 * mark it as a successful completion so they don't stall waiting 1534 * for it. 1535 */ 1536 if (ctx) { 1537 ctx->result = 0; 1538 complete(&ctx->completion); 1539 } 1540 return ret; 1541 } 1542 1543 int cxgb4_set_filter(struct net_device *dev, int filter_id, 1544 struct ch_filter_specification *fs) 1545 { 1546 struct filter_ctx ctx; 1547 int ret; 1548 1549 init_completion(&ctx.completion); 1550 1551 ret = __cxgb4_set_filter(dev, filter_id, fs, &ctx); 1552 if (ret) 1553 goto out; 1554 1555 /* Wait for reply */ 1556 ret = wait_for_completion_timeout(&ctx.completion, 10 * HZ); 1557 if (!ret) 1558 return -ETIMEDOUT; 1559 1560 ret = ctx.result; 1561 out: 1562 return ret; 1563 } 1564 1565 int cxgb4_del_filter(struct net_device *dev, int filter_id, 1566 struct ch_filter_specification *fs) 1567 { 1568 struct filter_ctx ctx; 1569 int ret; 1570 1571 /* If we are shutting down the adapter do not wait for completion */ 1572 if (netdev2adap(dev)->flags & SHUTTING_DOWN) 1573 return __cxgb4_del_filter(dev, filter_id, fs, NULL); 1574 1575 init_completion(&ctx.completion); 1576 1577 ret = __cxgb4_del_filter(dev, filter_id, fs, &ctx); 1578 if (ret) 1579 goto out; 1580 1581 /* Wait for reply */ 1582 ret = wait_for_completion_timeout(&ctx.completion, 10 * HZ); 1583 if (!ret) 1584 return -ETIMEDOUT; 1585 1586 ret = ctx.result; 1587 out: 1588 return ret; 1589 } 1590 1591 static int configure_filter_tcb(struct adapter *adap, unsigned int tid, 1592 struct filter_entry *f) 1593 { 1594 if (f->fs.hitcnts) 1595 set_tcb_field(adap, f, tid, TCB_TIMESTAMP_W, 1596 TCB_TIMESTAMP_V(TCB_TIMESTAMP_M) | 1597 TCB_RTT_TS_RECENT_AGE_V(TCB_RTT_TS_RECENT_AGE_M), 1598 TCB_TIMESTAMP_V(0ULL) | 1599 TCB_RTT_TS_RECENT_AGE_V(0ULL), 1600 1); 1601 1602 if (f->fs.newdmac) 1603 set_tcb_tflag(adap, f, tid, TF_CCTRL_ECE_S, 1, 1604 1); 1605 1606 if (f->fs.newvlan == VLAN_INSERT || 1607 f->fs.newvlan == VLAN_REWRITE) 1608 set_tcb_tflag(adap, f, tid, TF_CCTRL_RFR_S, 1, 1609 1); 1610 if (f->fs.newsmac) 1611 configure_filter_smac(adap, f); 1612 1613 if (f->fs.nat_mode) { 1614 switch (f->fs.nat_mode) { 1615 case NAT_MODE_DIP: 1616 set_nat_params(adap, f, tid, true, false, false, false); 1617 break; 1618 1619 case NAT_MODE_DIP_DP: 1620 set_nat_params(adap, f, tid, true, false, true, false); 1621 break; 1622 1623 case NAT_MODE_DIP_DP_SIP: 1624 set_nat_params(adap, f, tid, true, true, true, false); 1625 break; 1626 case NAT_MODE_DIP_DP_SP: 1627 set_nat_params(adap, f, tid, true, false, true, true); 1628 break; 1629 1630 case NAT_MODE_SIP_SP: 1631 set_nat_params(adap, f, tid, false, true, false, true); 1632 break; 1633 1634 case NAT_MODE_DIP_SIP_SP: 1635 set_nat_params(adap, f, tid, true, true, false, true); 1636 break; 1637 1638 case NAT_MODE_ALL: 1639 set_nat_params(adap, f, tid, true, true, true, true); 1640 break; 1641 1642 default: 1643 pr_err("%s: Invalid NAT mode: %d\n", 1644 __func__, f->fs.nat_mode); 1645 return -EINVAL; 1646 } 1647 } 1648 return 0; 1649 } 1650 1651 void hash_del_filter_rpl(struct adapter *adap, 1652 const struct cpl_abort_rpl_rss *rpl) 1653 { 1654 unsigned int status = rpl->status; 1655 struct tid_info *t = &adap->tids; 1656 unsigned int tid = GET_TID(rpl); 1657 struct filter_ctx *ctx = NULL; 1658 struct filter_entry *f; 1659 1660 dev_dbg(adap->pdev_dev, "%s: status = %u; tid = %u\n", 1661 __func__, status, tid); 1662 1663 f = lookup_tid(t, tid); 1664 if (!f) { 1665 dev_err(adap->pdev_dev, "%s:could not find filter entry", 1666 __func__); 1667 return; 1668 } 1669 ctx = f->ctx; 1670 f->ctx = NULL; 1671 clear_filter(adap, f); 1672 cxgb4_remove_tid(t, 0, tid, 0); 1673 kfree(f); 1674 if (ctx) { 1675 ctx->result = 0; 1676 complete(&ctx->completion); 1677 } 1678 } 1679 1680 void hash_filter_rpl(struct adapter *adap, const struct cpl_act_open_rpl *rpl) 1681 { 1682 unsigned int ftid = TID_TID_G(AOPEN_ATID_G(ntohl(rpl->atid_status))); 1683 unsigned int status = AOPEN_STATUS_G(ntohl(rpl->atid_status)); 1684 struct tid_info *t = &adap->tids; 1685 unsigned int tid = GET_TID(rpl); 1686 struct filter_ctx *ctx = NULL; 1687 struct filter_entry *f; 1688 1689 dev_dbg(adap->pdev_dev, "%s: tid = %u; atid = %u; status = %u\n", 1690 __func__, tid, ftid, status); 1691 1692 f = lookup_atid(t, ftid); 1693 if (!f) { 1694 dev_err(adap->pdev_dev, "%s:could not find filter entry", 1695 __func__); 1696 return; 1697 } 1698 ctx = f->ctx; 1699 f->ctx = NULL; 1700 1701 switch (status) { 1702 case CPL_ERR_NONE: 1703 f->tid = tid; 1704 f->pending = 0; 1705 f->valid = 1; 1706 cxgb4_insert_tid(t, f, f->tid, 0); 1707 cxgb4_free_atid(t, ftid); 1708 if (ctx) { 1709 ctx->tid = f->tid; 1710 ctx->result = 0; 1711 } 1712 if (configure_filter_tcb(adap, tid, f)) { 1713 clear_filter(adap, f); 1714 cxgb4_remove_tid(t, 0, tid, 0); 1715 kfree(f); 1716 if (ctx) { 1717 ctx->result = -EINVAL; 1718 complete(&ctx->completion); 1719 } 1720 return; 1721 } 1722 break; 1723 1724 default: 1725 dev_err(adap->pdev_dev, "%s: filter creation PROBLEM; status = %u\n", 1726 __func__, status); 1727 1728 if (ctx) { 1729 if (status == CPL_ERR_TCAM_FULL) 1730 ctx->result = -EAGAIN; 1731 else 1732 ctx->result = -EINVAL; 1733 } 1734 clear_filter(adap, f); 1735 cxgb4_free_atid(t, ftid); 1736 kfree(f); 1737 } 1738 if (ctx) 1739 complete(&ctx->completion); 1740 } 1741 1742 /* Handle a filter write/deletion reply. */ 1743 void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl) 1744 { 1745 unsigned int tid = GET_TID(rpl); 1746 struct filter_entry *f = NULL; 1747 unsigned int max_fidx; 1748 int idx; 1749 1750 max_fidx = adap->tids.nftids + adap->tids.nsftids; 1751 /* Get the corresponding filter entry for this tid */ 1752 if (adap->tids.ftid_tab) { 1753 /* Check this in normal filter region */ 1754 idx = tid - adap->tids.ftid_base; 1755 if (idx >= max_fidx) 1756 return; 1757 f = &adap->tids.ftid_tab[idx]; 1758 if (f->tid != tid) 1759 return; 1760 } 1761 1762 /* We found the filter entry for this tid */ 1763 if (f) { 1764 unsigned int ret = TCB_COOKIE_G(rpl->cookie); 1765 struct filter_ctx *ctx; 1766 1767 /* Pull off any filter operation context attached to the 1768 * filter. 1769 */ 1770 ctx = f->ctx; 1771 f->ctx = NULL; 1772 1773 if (ret == FW_FILTER_WR_FLT_DELETED) { 1774 /* Clear the filter when we get confirmation from the 1775 * hardware that the filter has been deleted. 1776 */ 1777 clear_filter(adap, f); 1778 if (ctx) 1779 ctx->result = 0; 1780 } else if (ret == FW_FILTER_WR_FLT_ADDED) { 1781 int err = 0; 1782 1783 if (f->fs.newsmac) 1784 err = configure_filter_smac(adap, f); 1785 1786 if (!err) { 1787 f->pending = 0; /* async setup completed */ 1788 f->valid = 1; 1789 if (ctx) { 1790 ctx->result = 0; 1791 ctx->tid = idx; 1792 } 1793 } else { 1794 clear_filter(adap, f); 1795 if (ctx) 1796 ctx->result = err; 1797 } 1798 } else { 1799 /* Something went wrong. Issue a warning about the 1800 * problem and clear everything out. 1801 */ 1802 dev_err(adap->pdev_dev, "filter %u setup failed with error %u\n", 1803 idx, ret); 1804 clear_filter(adap, f); 1805 if (ctx) 1806 ctx->result = -EINVAL; 1807 } 1808 if (ctx) 1809 complete(&ctx->completion); 1810 } 1811 } 1812 1813 int init_hash_filter(struct adapter *adap) 1814 { 1815 /* On T6, verify the necessary register configs and warn the user in 1816 * case of improper config 1817 */ 1818 if (is_t6(adap->params.chip)) { 1819 if (TCAM_ACTV_HIT_G(t4_read_reg(adap, LE_DB_RSP_CODE_0_A)) != 4) 1820 goto err; 1821 1822 if (HASH_ACTV_HIT_G(t4_read_reg(adap, LE_DB_RSP_CODE_1_A)) != 4) 1823 goto err; 1824 } else { 1825 dev_err(adap->pdev_dev, "Hash filter supported only on T6\n"); 1826 return -EINVAL; 1827 } 1828 adap->params.hash_filter = 1; 1829 return 0; 1830 err: 1831 dev_warn(adap->pdev_dev, "Invalid hash filter config!\n"); 1832 return -EINVAL; 1833 } 1834