Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #include "ipa_i.h" |
| 14 | |
| 15 | #define IPA_FLT_TABLE_WORD_SIZE (4) |
| 16 | #define IPA_FLT_ENTRY_MEMORY_ALLIGNMENT (0x3) |
| 17 | #define IPA_FLT_BIT_MASK (0x1) |
| 18 | #define IPA_FLT_TABLE_INDEX_NOT_FOUND (-1) |
| 19 | #define IPA_FLT_STATUS_OF_ADD_FAILED (-1) |
| 20 | #define IPA_FLT_STATUS_OF_DEL_FAILED (-1) |
| 21 | #define IPA_FLT_STATUS_OF_MDFY_FAILED (-1) |
| 22 | |
| 23 | static int ipa_generate_hw_rule_from_eq( |
| 24 | const struct ipa_ipfltri_rule_eq *attrib, u8 **buf) |
| 25 | { |
Mohammed Javid | bf4c802 | 2017-08-07 23:15:48 +0530 | [diff] [blame] | 26 | uint8_t num_offset_meq_32 = attrib->num_offset_meq_32; |
| 27 | uint8_t num_ihl_offset_range_16 = attrib->num_ihl_offset_range_16; |
| 28 | uint8_t num_ihl_offset_meq_32 = attrib->num_ihl_offset_meq_32; |
| 29 | uint8_t num_offset_meq_128 = attrib->num_offset_meq_128; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 30 | int i; |
| 31 | |
| 32 | if (attrib->tos_eq_present) { |
| 33 | *buf = ipa_write_8(attrib->tos_eq, *buf); |
| 34 | *buf = ipa_pad_to_32(*buf); |
| 35 | } |
| 36 | |
| 37 | if (attrib->protocol_eq_present) { |
| 38 | *buf = ipa_write_8(attrib->protocol_eq, *buf); |
| 39 | *buf = ipa_pad_to_32(*buf); |
| 40 | } |
| 41 | |
| 42 | if (num_offset_meq_32) { |
| 43 | *buf = ipa_write_8(attrib->offset_meq_32[0].offset, *buf); |
| 44 | *buf = ipa_write_32(attrib->offset_meq_32[0].mask, *buf); |
| 45 | *buf = ipa_write_32(attrib->offset_meq_32[0].value, *buf); |
| 46 | *buf = ipa_pad_to_32(*buf); |
| 47 | num_offset_meq_32--; |
| 48 | } |
| 49 | |
| 50 | if (num_offset_meq_32) { |
| 51 | *buf = ipa_write_8(attrib->offset_meq_32[1].offset, *buf); |
| 52 | *buf = ipa_write_32(attrib->offset_meq_32[1].mask, *buf); |
| 53 | *buf = ipa_write_32(attrib->offset_meq_32[1].value, *buf); |
| 54 | *buf = ipa_pad_to_32(*buf); |
| 55 | num_offset_meq_32--; |
| 56 | } |
| 57 | |
| 58 | if (num_ihl_offset_range_16) { |
| 59 | *buf = ipa_write_8(attrib->ihl_offset_range_16[0].offset, *buf); |
| 60 | *buf = ipa_write_16(attrib->ihl_offset_range_16[0].range_high, |
| 61 | *buf); |
| 62 | *buf = ipa_write_16(attrib->ihl_offset_range_16[0].range_low, |
| 63 | *buf); |
| 64 | *buf = ipa_pad_to_32(*buf); |
| 65 | num_ihl_offset_range_16--; |
| 66 | } |
| 67 | |
| 68 | if (num_ihl_offset_range_16) { |
| 69 | *buf = ipa_write_8(attrib->ihl_offset_range_16[1].offset, *buf); |
| 70 | *buf = ipa_write_16(attrib->ihl_offset_range_16[1].range_high, |
| 71 | *buf); |
| 72 | *buf = ipa_write_16(attrib->ihl_offset_range_16[1].range_low, |
| 73 | *buf); |
| 74 | *buf = ipa_pad_to_32(*buf); |
| 75 | num_ihl_offset_range_16--; |
| 76 | } |
| 77 | |
| 78 | if (attrib->ihl_offset_eq_16_present) { |
| 79 | *buf = ipa_write_8(attrib->ihl_offset_eq_16.offset, *buf); |
| 80 | *buf = ipa_write_16(attrib->ihl_offset_eq_16.value, *buf); |
| 81 | *buf = ipa_pad_to_32(*buf); |
| 82 | } |
| 83 | |
| 84 | if (attrib->ihl_offset_eq_32_present) { |
| 85 | *buf = ipa_write_8(attrib->ihl_offset_eq_32.offset, *buf); |
| 86 | *buf = ipa_write_32(attrib->ihl_offset_eq_32.value, *buf); |
| 87 | *buf = ipa_pad_to_32(*buf); |
| 88 | } |
| 89 | |
| 90 | if (num_ihl_offset_meq_32) { |
| 91 | *buf = ipa_write_8(attrib->ihl_offset_meq_32[0].offset, *buf); |
| 92 | *buf = ipa_write_32(attrib->ihl_offset_meq_32[0].mask, *buf); |
| 93 | *buf = ipa_write_32(attrib->ihl_offset_meq_32[0].value, *buf); |
| 94 | *buf = ipa_pad_to_32(*buf); |
| 95 | num_ihl_offset_meq_32--; |
| 96 | } |
| 97 | |
| 98 | /* TODO check layout of 16 byte mask and value */ |
| 99 | if (num_offset_meq_128) { |
| 100 | *buf = ipa_write_8(attrib->offset_meq_128[0].offset, *buf); |
| 101 | for (i = 0; i < 16; i++) |
| 102 | *buf = ipa_write_8(attrib->offset_meq_128[0].mask[i], |
| 103 | *buf); |
| 104 | for (i = 0; i < 16; i++) |
| 105 | *buf = ipa_write_8(attrib->offset_meq_128[0].value[i], |
| 106 | *buf); |
| 107 | *buf = ipa_pad_to_32(*buf); |
| 108 | num_offset_meq_128--; |
| 109 | } |
| 110 | |
| 111 | if (num_offset_meq_128) { |
| 112 | *buf = ipa_write_8(attrib->offset_meq_128[1].offset, *buf); |
| 113 | for (i = 0; i < 16; i++) |
| 114 | *buf = ipa_write_8(attrib->offset_meq_128[1].mask[i], |
| 115 | *buf); |
| 116 | for (i = 0; i < 16; i++) |
| 117 | *buf = ipa_write_8(attrib->offset_meq_128[1].value[i], |
| 118 | *buf); |
| 119 | *buf = ipa_pad_to_32(*buf); |
| 120 | num_offset_meq_128--; |
| 121 | } |
| 122 | |
| 123 | if (attrib->tc_eq_present) { |
| 124 | *buf = ipa_write_8(attrib->tc_eq, *buf); |
| 125 | *buf = ipa_pad_to_32(*buf); |
| 126 | } |
| 127 | |
| 128 | if (attrib->fl_eq_present) { |
| 129 | *buf = ipa_write_32(attrib->fl_eq, *buf); |
| 130 | *buf = ipa_pad_to_32(*buf); |
| 131 | } |
| 132 | |
| 133 | if (num_ihl_offset_meq_32) { |
| 134 | *buf = ipa_write_8(attrib->ihl_offset_meq_32[1].offset, *buf); |
| 135 | *buf = ipa_write_32(attrib->ihl_offset_meq_32[1].mask, *buf); |
| 136 | *buf = ipa_write_32(attrib->ihl_offset_meq_32[1].value, *buf); |
| 137 | *buf = ipa_pad_to_32(*buf); |
| 138 | num_ihl_offset_meq_32--; |
| 139 | } |
| 140 | |
| 141 | if (attrib->metadata_meq32_present) { |
| 142 | *buf = ipa_write_8(attrib->metadata_meq32.offset, *buf); |
| 143 | *buf = ipa_write_32(attrib->metadata_meq32.mask, *buf); |
| 144 | *buf = ipa_write_32(attrib->metadata_meq32.value, *buf); |
| 145 | *buf = ipa_pad_to_32(*buf); |
| 146 | } |
| 147 | |
| 148 | if (attrib->ipv4_frag_eq_present) |
| 149 | *buf = ipa_pad_to_32(*buf); |
| 150 | |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * ipa_generate_flt_hw_rule() - generates the filtering hardware rule |
| 156 | * @ip: the ip address family type |
| 157 | * @entry: routing entry |
| 158 | * @buf: output buffer, buf == NULL means |
| 159 | * caller wants to know the size of the rule as seen |
| 160 | * by HW so they did not pass a valid buffer, we will use a |
| 161 | * scratch buffer instead. |
| 162 | * With this scheme we are going to |
| 163 | * generate the rule twice, once to know size using scratch |
| 164 | * buffer and second to write the rule to the actual caller |
| 165 | * supplied buffer which is of required size |
| 166 | * |
| 167 | * Returns: 0 on success, negative on failure |
| 168 | * |
| 169 | * caller needs to hold any needed locks to ensure integrity |
| 170 | * |
| 171 | */ |
| 172 | static int ipa_generate_flt_hw_rule(enum ipa_ip_type ip, |
| 173 | struct ipa_flt_entry *entry, u8 *buf) |
| 174 | { |
| 175 | struct ipa_flt_rule_hw_hdr *hdr; |
| 176 | const struct ipa_flt_rule *rule = |
| 177 | (const struct ipa_flt_rule *)&entry->rule; |
| 178 | u16 en_rule = 0; |
| 179 | u32 tmp[IPA_RT_FLT_HW_RULE_BUF_SIZE/4]; |
| 180 | u8 *start; |
| 181 | |
| 182 | if (buf == NULL) { |
| 183 | memset(tmp, 0, IPA_RT_FLT_HW_RULE_BUF_SIZE); |
| 184 | buf = (u8 *)tmp; |
| 185 | } |
| 186 | |
| 187 | start = buf; |
| 188 | hdr = (struct ipa_flt_rule_hw_hdr *)buf; |
| 189 | hdr->u.hdr.action = entry->rule.action; |
| 190 | hdr->u.hdr.retain_hdr = entry->rule.retain_hdr; |
| 191 | hdr->u.hdr.to_uc = entry->rule.to_uc; |
| 192 | if (entry->rt_tbl) |
| 193 | hdr->u.hdr.rt_tbl_idx = entry->rt_tbl->idx; |
| 194 | else |
| 195 | hdr->u.hdr.rt_tbl_idx = entry->rule.rt_tbl_idx; |
| 196 | hdr->u.hdr.rsvd = 0; |
| 197 | buf += sizeof(struct ipa_flt_rule_hw_hdr); |
| 198 | |
| 199 | if (rule->eq_attrib_type) { |
| 200 | if (ipa_generate_hw_rule_from_eq(&rule->eq_attrib, &buf)) { |
| 201 | IPAERR("fail to generate hw rule\n"); |
| 202 | return -EPERM; |
| 203 | } |
| 204 | en_rule = rule->eq_attrib.rule_eq_bitmap; |
| 205 | } else { |
| 206 | if (ipa_generate_hw_rule(ip, &rule->attrib, &buf, &en_rule)) { |
| 207 | IPAERR("fail to generate hw rule\n"); |
| 208 | return -EPERM; |
| 209 | } |
| 210 | } |
| 211 | |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 212 | IPADBG_LOW("en_rule 0x%x, action=%d, rt_idx=%d, uc=%d, retain_hdr=%d\n", |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 213 | en_rule, |
| 214 | hdr->u.hdr.action, |
| 215 | hdr->u.hdr.rt_tbl_idx, |
| 216 | hdr->u.hdr.to_uc, |
| 217 | hdr->u.hdr.retain_hdr); |
| 218 | |
| 219 | hdr->u.hdr.en_rule = en_rule; |
| 220 | ipa_write_32(hdr->u.word, (u8 *)hdr); |
| 221 | |
| 222 | if (entry->hw_len == 0) { |
| 223 | entry->hw_len = buf - start; |
| 224 | } else if (entry->hw_len != (buf - start)) { |
| 225 | IPAERR("hw_len differs b/w passes passed=%x calc=%td\n", |
| 226 | entry->hw_len, (buf - start)); |
| 227 | return -EPERM; |
| 228 | } |
| 229 | |
| 230 | return 0; |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * ipa_get_flt_hw_tbl_size() - returns the size of HW filtering table |
| 235 | * @ip: the ip address family type |
| 236 | * @hdr_sz: header size |
| 237 | * |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 238 | * Returns: size on success, negative on failure |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 239 | * |
| 240 | * caller needs to hold any needed locks to ensure integrity |
| 241 | * |
| 242 | */ |
| 243 | static int ipa_get_flt_hw_tbl_size(enum ipa_ip_type ip, u32 *hdr_sz) |
| 244 | { |
| 245 | struct ipa_flt_tbl *tbl; |
| 246 | struct ipa_flt_entry *entry; |
| 247 | u32 total_sz = 0; |
| 248 | u32 rule_set_sz; |
| 249 | int i; |
| 250 | |
| 251 | *hdr_sz = 0; |
| 252 | tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| 253 | rule_set_sz = 0; |
| 254 | list_for_each_entry(entry, &tbl->head_flt_rule_list, link) { |
| 255 | if (ipa_generate_flt_hw_rule(ip, entry, NULL)) { |
| 256 | IPAERR("failed to find HW FLT rule size\n"); |
| 257 | return -EPERM; |
| 258 | } |
| 259 | IPADBG("glob ip %d len %d\n", ip, entry->hw_len); |
| 260 | rule_set_sz += entry->hw_len; |
| 261 | } |
| 262 | |
| 263 | if (rule_set_sz) { |
| 264 | tbl->sz = rule_set_sz + IPA_FLT_TABLE_WORD_SIZE; |
| 265 | /* this rule-set uses a word in header block */ |
| 266 | *hdr_sz += IPA_FLT_TABLE_WORD_SIZE; |
| 267 | if (!tbl->in_sys) { |
| 268 | /* add the terminator */ |
| 269 | total_sz += (rule_set_sz + IPA_FLT_TABLE_WORD_SIZE); |
| 270 | total_sz = (total_sz + |
| 271 | IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) & |
| 272 | ~IPA_FLT_ENTRY_MEMORY_ALLIGNMENT; |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | for (i = 0; i < ipa_ctx->ipa_num_pipes; i++) { |
| 277 | tbl = &ipa_ctx->flt_tbl[i][ip]; |
| 278 | rule_set_sz = 0; |
| 279 | list_for_each_entry(entry, &tbl->head_flt_rule_list, link) { |
| 280 | if (ipa_generate_flt_hw_rule(ip, entry, NULL)) { |
| 281 | IPAERR("failed to find HW FLT rule size\n"); |
| 282 | return -EPERM; |
| 283 | } |
| 284 | IPADBG("pipe %d len %d\n", i, entry->hw_len); |
| 285 | rule_set_sz += entry->hw_len; |
| 286 | } |
| 287 | |
| 288 | if (rule_set_sz) { |
| 289 | tbl->sz = rule_set_sz + IPA_FLT_TABLE_WORD_SIZE; |
| 290 | /* this rule-set uses a word in header block */ |
| 291 | *hdr_sz += IPA_FLT_TABLE_WORD_SIZE; |
| 292 | if (!tbl->in_sys) { |
| 293 | /* add the terminator */ |
| 294 | total_sz += (rule_set_sz + |
| 295 | IPA_FLT_TABLE_WORD_SIZE); |
| 296 | total_sz = (total_sz + |
| 297 | IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) & |
| 298 | ~IPA_FLT_ENTRY_MEMORY_ALLIGNMENT; |
| 299 | } |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | *hdr_sz += IPA_FLT_TABLE_WORD_SIZE; |
| 304 | total_sz += *hdr_sz; |
| 305 | IPADBG("FLT HW TBL SZ %d HDR SZ %d IP %d\n", total_sz, *hdr_sz, ip); |
| 306 | |
| 307 | return total_sz; |
| 308 | } |
| 309 | |
| 310 | static int ipa_generate_flt_hw_tbl_common(enum ipa_ip_type ip, u8 *base, |
| 311 | u8 *hdr, u32 body_start_offset, u8 *hdr2, u32 *hdr_top) |
| 312 | { |
| 313 | struct ipa_flt_tbl *tbl; |
| 314 | struct ipa_flt_entry *entry; |
| 315 | int i; |
| 316 | u32 offset; |
| 317 | u8 *body; |
| 318 | struct ipa_mem_buffer flt_tbl_mem; |
| 319 | u8 *ftbl_membody; |
| 320 | |
| 321 | *hdr_top = 0; |
| 322 | body = base; |
| 323 | |
| 324 | #define IPA_WRITE_FLT_HDR(idx, val) { \ |
| 325 | if (idx <= 5) { \ |
| 326 | *((u32 *)hdr + 1 + idx) = val; \ |
| 327 | } else if (idx >= 6 && idx <= 10) { \ |
| 328 | WARN_ON(1); \ |
| 329 | } else if (idx >= 11 && idx <= 19) { \ |
| 330 | *((u32 *)hdr2 + idx - 11) = val; \ |
| 331 | } else { \ |
| 332 | WARN_ON(1); \ |
| 333 | } \ |
| 334 | } |
| 335 | |
| 336 | tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| 337 | |
| 338 | if (!list_empty(&tbl->head_flt_rule_list)) { |
| 339 | *hdr_top |= IPA_FLT_BIT_MASK; |
| 340 | |
| 341 | if (!tbl->in_sys) { |
| 342 | offset = body - base + body_start_offset; |
| 343 | if (offset & IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) { |
| 344 | IPAERR("offset is not word multiple %d\n", |
| 345 | offset); |
| 346 | goto proc_err; |
| 347 | } |
| 348 | |
| 349 | offset &= ~IPA_FLT_ENTRY_MEMORY_ALLIGNMENT; |
| 350 | /* rule is at an offset from base */ |
| 351 | offset |= IPA_FLT_BIT_MASK; |
| 352 | |
| 353 | if (hdr2) |
| 354 | *(u32 *)hdr = offset; |
| 355 | else |
| 356 | hdr = ipa_write_32(offset, hdr); |
| 357 | |
| 358 | /* generate the rule-set */ |
| 359 | list_for_each_entry(entry, &tbl->head_flt_rule_list, |
| 360 | link) { |
| 361 | if (ipa_generate_flt_hw_rule(ip, entry, body)) { |
| 362 | IPAERR("failed to gen HW FLT rule\n"); |
| 363 | goto proc_err; |
| 364 | } |
| 365 | body += entry->hw_len; |
| 366 | } |
| 367 | |
| 368 | /* write the rule-set terminator */ |
| 369 | body = ipa_write_32(0, body); |
| 370 | if ((long)body & IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) |
| 371 | /* advance body to next word boundary */ |
| 372 | body = body + (IPA_FLT_TABLE_WORD_SIZE - |
| 373 | ((long)body & |
| 374 | IPA_FLT_ENTRY_MEMORY_ALLIGNMENT)); |
| 375 | } else { |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 376 | if (tbl->sz == 0) { |
| 377 | IPAERR("tbl size is 0\n"); |
| 378 | WARN_ON(1); |
| 379 | goto proc_err; |
| 380 | } |
| 381 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 382 | /* allocate memory for the flt tbl */ |
| 383 | flt_tbl_mem.size = tbl->sz; |
| 384 | flt_tbl_mem.base = |
| 385 | dma_alloc_coherent(ipa_ctx->pdev, flt_tbl_mem.size, |
| 386 | &flt_tbl_mem.phys_base, GFP_KERNEL); |
| 387 | if (!flt_tbl_mem.base) { |
| 388 | IPAERR("fail to alloc DMA buff of size %d\n", |
| 389 | flt_tbl_mem.size); |
| 390 | WARN_ON(1); |
| 391 | goto proc_err; |
| 392 | } |
| 393 | |
| 394 | WARN_ON(flt_tbl_mem.phys_base & |
| 395 | IPA_FLT_ENTRY_MEMORY_ALLIGNMENT); |
| 396 | ftbl_membody = flt_tbl_mem.base; |
| 397 | memset(flt_tbl_mem.base, 0, flt_tbl_mem.size); |
| 398 | |
| 399 | if (hdr2) |
| 400 | *(u32 *)hdr = flt_tbl_mem.phys_base; |
| 401 | else |
| 402 | hdr = ipa_write_32(flt_tbl_mem.phys_base, hdr); |
| 403 | |
| 404 | /* generate the rule-set */ |
| 405 | list_for_each_entry(entry, &tbl->head_flt_rule_list, |
| 406 | link) { |
| 407 | if (ipa_generate_flt_hw_rule(ip, entry, |
| 408 | ftbl_membody)) { |
| 409 | IPAERR("failed to gen HW FLT rule\n"); |
| 410 | WARN_ON(1); |
| 411 | } |
| 412 | ftbl_membody += entry->hw_len; |
| 413 | } |
| 414 | |
| 415 | /* write the rule-set terminator */ |
| 416 | ftbl_membody = ipa_write_32(0, ftbl_membody); |
| 417 | if (tbl->curr_mem.phys_base) { |
| 418 | WARN_ON(tbl->prev_mem.phys_base); |
| 419 | tbl->prev_mem = tbl->curr_mem; |
| 420 | } |
| 421 | tbl->curr_mem = flt_tbl_mem; |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | for (i = 0; i < ipa_ctx->ipa_num_pipes; i++) { |
| 426 | tbl = &ipa_ctx->flt_tbl[i][ip]; |
| 427 | if (!list_empty(&tbl->head_flt_rule_list)) { |
| 428 | /* pipe "i" is at bit "i+1" */ |
| 429 | *hdr_top |= (1 << (i + 1)); |
| 430 | |
| 431 | if (!tbl->in_sys) { |
| 432 | offset = body - base + body_start_offset; |
| 433 | if (offset & IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) { |
| 434 | IPAERR("ofst is not word multiple %d\n", |
| 435 | offset); |
| 436 | goto proc_err; |
| 437 | } |
| 438 | offset &= ~IPA_FLT_ENTRY_MEMORY_ALLIGNMENT; |
| 439 | /* rule is at an offset from base */ |
| 440 | offset |= IPA_FLT_BIT_MASK; |
| 441 | |
| 442 | if (hdr2) |
| 443 | IPA_WRITE_FLT_HDR(i, offset) |
| 444 | else |
| 445 | hdr = ipa_write_32(offset, hdr); |
| 446 | |
| 447 | /* generate the rule-set */ |
| 448 | list_for_each_entry(entry, |
| 449 | &tbl->head_flt_rule_list, |
| 450 | link) { |
| 451 | if (ipa_generate_flt_hw_rule(ip, entry, |
| 452 | body)) { |
| 453 | IPAERR("fail gen FLT rule\n"); |
| 454 | goto proc_err; |
| 455 | } |
| 456 | body += entry->hw_len; |
| 457 | } |
| 458 | |
| 459 | /* write the rule-set terminator */ |
| 460 | body = ipa_write_32(0, body); |
| 461 | if ((long)body & |
| 462 | IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) |
| 463 | /* advance body to next word boundary */ |
| 464 | body = body + (IPA_FLT_TABLE_WORD_SIZE - |
| 465 | ((long)body & |
| 466 | IPA_FLT_ENTRY_MEMORY_ALLIGNMENT)); |
| 467 | } else { |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 468 | if (tbl->sz == 0) { |
| 469 | IPAERR("tbl size is 0\n"); |
| 470 | WARN_ON(1); |
| 471 | goto proc_err; |
| 472 | } |
| 473 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 474 | /* allocate memory for the flt tbl */ |
| 475 | flt_tbl_mem.size = tbl->sz; |
| 476 | flt_tbl_mem.base = |
| 477 | dma_alloc_coherent(ipa_ctx->pdev, |
| 478 | flt_tbl_mem.size, |
| 479 | &flt_tbl_mem.phys_base, |
| 480 | GFP_KERNEL); |
| 481 | if (!flt_tbl_mem.base) { |
| 482 | IPAERR("fail alloc DMA buff size %d\n", |
| 483 | flt_tbl_mem.size); |
| 484 | WARN_ON(1); |
| 485 | goto proc_err; |
| 486 | } |
| 487 | |
| 488 | WARN_ON(flt_tbl_mem.phys_base & |
| 489 | IPA_FLT_ENTRY_MEMORY_ALLIGNMENT); |
| 490 | |
| 491 | ftbl_membody = flt_tbl_mem.base; |
| 492 | memset(flt_tbl_mem.base, 0, flt_tbl_mem.size); |
| 493 | |
| 494 | if (hdr2) |
| 495 | IPA_WRITE_FLT_HDR(i, |
| 496 | flt_tbl_mem.phys_base) |
| 497 | else |
| 498 | hdr = ipa_write_32( |
| 499 | flt_tbl_mem.phys_base, hdr); |
| 500 | |
| 501 | /* generate the rule-set */ |
| 502 | list_for_each_entry(entry, |
| 503 | &tbl->head_flt_rule_list, |
| 504 | link) { |
| 505 | if (ipa_generate_flt_hw_rule(ip, entry, |
| 506 | ftbl_membody)) { |
| 507 | IPAERR("fail gen FLT rule\n"); |
| 508 | WARN_ON(1); |
| 509 | } |
| 510 | ftbl_membody += entry->hw_len; |
| 511 | } |
| 512 | |
| 513 | /* write the rule-set terminator */ |
| 514 | ftbl_membody = |
| 515 | ipa_write_32(0, ftbl_membody); |
| 516 | if (tbl->curr_mem.phys_base) { |
| 517 | WARN_ON(tbl->prev_mem.phys_base); |
| 518 | tbl->prev_mem = tbl->curr_mem; |
| 519 | } |
| 520 | tbl->curr_mem = flt_tbl_mem; |
| 521 | } |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | return 0; |
| 526 | |
| 527 | proc_err: |
| 528 | return -EPERM; |
| 529 | } |
| 530 | |
| 531 | |
| 532 | /** |
| 533 | * ipa_generate_flt_hw_tbl() - generates the filtering hardware table |
| 534 | * @ip: [in] the ip address family type |
| 535 | * @mem: [out] buffer to put the filtering table |
| 536 | * |
| 537 | * Returns: 0 on success, negative on failure |
| 538 | */ |
| 539 | static int ipa_generate_flt_hw_tbl_v1_1(enum ipa_ip_type ip, |
| 540 | struct ipa_mem_buffer *mem) |
| 541 | { |
| 542 | u32 hdr_top = 0; |
| 543 | u32 hdr_sz; |
| 544 | u8 *hdr; |
| 545 | u8 *body; |
| 546 | u8 *base; |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 547 | int res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 548 | |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 549 | res = ipa_get_flt_hw_tbl_size(ip, &hdr_sz); |
| 550 | if (res < 0) { |
| 551 | IPAERR("ipa_get_flt_hw_tbl_size failed %d\n", res); |
| 552 | return res; |
| 553 | } |
| 554 | |
| 555 | mem->size = res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 556 | mem->size = IPA_HW_TABLE_ALIGNMENT(mem->size); |
| 557 | |
| 558 | if (mem->size == 0) { |
| 559 | IPAERR("flt tbl empty ip=%d\n", ip); |
| 560 | goto error; |
| 561 | } |
| 562 | mem->base = dma_alloc_coherent(ipa_ctx->pdev, mem->size, |
| 563 | &mem->phys_base, GFP_KERNEL); |
| 564 | if (!mem->base) { |
| 565 | IPAERR("fail to alloc DMA buff of size %d\n", mem->size); |
| 566 | goto error; |
| 567 | } |
| 568 | |
| 569 | memset(mem->base, 0, mem->size); |
| 570 | |
| 571 | /* build the flt tbl in the DMA buffer to submit to IPA HW */ |
| 572 | base = hdr = (u8 *)mem->base; |
| 573 | body = base + hdr_sz; |
| 574 | |
| 575 | /* write a dummy header to move cursor */ |
| 576 | hdr = ipa_write_32(hdr_top, hdr); |
| 577 | |
| 578 | if (ipa_generate_flt_hw_tbl_common(ip, body, hdr, hdr_sz, 0, |
| 579 | &hdr_top)) { |
| 580 | IPAERR("fail to generate FLT HW table\n"); |
| 581 | goto proc_err; |
| 582 | } |
| 583 | |
| 584 | /* now write the hdr_top */ |
| 585 | ipa_write_32(hdr_top, base); |
| 586 | |
| 587 | IPA_DUMP_BUFF(mem->base, mem->phys_base, mem->size); |
| 588 | |
| 589 | return 0; |
| 590 | |
| 591 | proc_err: |
| 592 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, mem->phys_base); |
| 593 | error: |
| 594 | return -EPERM; |
| 595 | } |
| 596 | |
| 597 | static void __ipa_reap_sys_flt_tbls(enum ipa_ip_type ip) |
| 598 | { |
| 599 | struct ipa_flt_tbl *tbl; |
| 600 | int i; |
| 601 | |
| 602 | tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| 603 | if (tbl->prev_mem.phys_base) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 604 | IPADBG_LOW("reaping glob flt tbl (prev) ip=%d\n", ip); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 605 | dma_free_coherent(ipa_ctx->pdev, tbl->prev_mem.size, |
| 606 | tbl->prev_mem.base, tbl->prev_mem.phys_base); |
| 607 | memset(&tbl->prev_mem, 0, sizeof(tbl->prev_mem)); |
| 608 | } |
| 609 | |
| 610 | if (list_empty(&tbl->head_flt_rule_list)) { |
| 611 | if (tbl->curr_mem.phys_base) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 612 | IPADBG_LOW("reaping glob flt tbl (curr) ip=%d\n", ip); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 613 | dma_free_coherent(ipa_ctx->pdev, tbl->curr_mem.size, |
| 614 | tbl->curr_mem.base, |
| 615 | tbl->curr_mem.phys_base); |
| 616 | memset(&tbl->curr_mem, 0, sizeof(tbl->curr_mem)); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | for (i = 0; i < ipa_ctx->ipa_num_pipes; i++) { |
| 621 | tbl = &ipa_ctx->flt_tbl[i][ip]; |
| 622 | if (tbl->prev_mem.phys_base) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 623 | IPADBG_LOW("reaping flt tbl"); |
| 624 | IPADBG_LOW("(prev) pipe=%d ip=%d\n", i, ip); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 625 | dma_free_coherent(ipa_ctx->pdev, tbl->prev_mem.size, |
| 626 | tbl->prev_mem.base, |
| 627 | tbl->prev_mem.phys_base); |
| 628 | memset(&tbl->prev_mem, 0, sizeof(tbl->prev_mem)); |
| 629 | } |
| 630 | |
| 631 | if (list_empty(&tbl->head_flt_rule_list)) { |
| 632 | if (tbl->curr_mem.phys_base) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 633 | IPADBG_LOW("reaping flt tbl"); |
| 634 | IPADBG_LOW("(curr) pipe=%d ip=%d\n", |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 635 | i, ip); |
| 636 | dma_free_coherent(ipa_ctx->pdev, |
| 637 | tbl->curr_mem.size, |
| 638 | tbl->curr_mem.base, |
| 639 | tbl->curr_mem.phys_base); |
| 640 | memset(&tbl->curr_mem, 0, |
| 641 | sizeof(tbl->curr_mem)); |
| 642 | } |
| 643 | } |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | int __ipa_commit_flt_v1_1(enum ipa_ip_type ip) |
| 648 | { |
| 649 | struct ipa_desc desc = { 0 }; |
| 650 | struct ipa_mem_buffer *mem; |
| 651 | void *cmd; |
| 652 | struct ipa_ip_v4_filter_init *v4; |
| 653 | struct ipa_ip_v6_filter_init *v6; |
| 654 | u16 avail; |
| 655 | u16 size; |
Utkarsh Saxena | 67d59b6 | 2017-05-16 22:41:50 +0530 | [diff] [blame] | 656 | gfp_t flag = GFP_KERNEL | (ipa_ctx->use_dma_zone ? GFP_DMA : 0); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 657 | |
| 658 | mem = kmalloc(sizeof(struct ipa_mem_buffer), GFP_KERNEL); |
| 659 | if (!mem) { |
| 660 | IPAERR("failed to alloc memory object\n"); |
| 661 | goto fail_alloc_mem; |
| 662 | } |
| 663 | |
| 664 | if (ip == IPA_IP_v4) { |
| 665 | avail = ipa_ctx->ip4_flt_tbl_lcl ? IPA_MEM_v1_RAM_V4_FLT_SIZE : |
| 666 | IPA_MEM_PART(v4_flt_size_ddr); |
| 667 | size = sizeof(struct ipa_ip_v4_filter_init); |
| 668 | } else { |
| 669 | avail = ipa_ctx->ip6_flt_tbl_lcl ? IPA_MEM_v1_RAM_V6_FLT_SIZE : |
| 670 | IPA_MEM_PART(v6_flt_size_ddr); |
| 671 | size = sizeof(struct ipa_ip_v6_filter_init); |
| 672 | } |
Utkarsh Saxena | 67d59b6 | 2017-05-16 22:41:50 +0530 | [diff] [blame] | 673 | cmd = kmalloc(size, flag); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 674 | if (!cmd) { |
| 675 | IPAERR("failed to alloc immediate command object\n"); |
| 676 | goto fail_alloc_cmd; |
| 677 | } |
| 678 | |
| 679 | if (ipa_generate_flt_hw_tbl_v1_1(ip, mem)) { |
| 680 | IPAERR("fail to generate FLT HW TBL ip %d\n", ip); |
| 681 | goto fail_hw_tbl_gen; |
| 682 | } |
| 683 | |
| 684 | if (mem->size > avail) { |
| 685 | IPAERR("tbl too big, needed %d avail %d\n", mem->size, avail); |
| 686 | goto fail_send_cmd; |
| 687 | } |
| 688 | |
| 689 | if (ip == IPA_IP_v4) { |
| 690 | v4 = (struct ipa_ip_v4_filter_init *)cmd; |
| 691 | desc.opcode = IPA_IP_V4_FILTER_INIT; |
| 692 | v4->ipv4_rules_addr = mem->phys_base; |
| 693 | v4->size_ipv4_rules = mem->size; |
| 694 | v4->ipv4_addr = IPA_MEM_v1_RAM_V4_FLT_OFST; |
| 695 | } else { |
| 696 | v6 = (struct ipa_ip_v6_filter_init *)cmd; |
| 697 | desc.opcode = IPA_IP_V6_FILTER_INIT; |
| 698 | v6->ipv6_rules_addr = mem->phys_base; |
| 699 | v6->size_ipv6_rules = mem->size; |
| 700 | v6->ipv6_addr = IPA_MEM_v1_RAM_V6_FLT_OFST; |
| 701 | } |
| 702 | |
| 703 | desc.pyld = cmd; |
| 704 | desc.len = size; |
| 705 | desc.type = IPA_IMM_CMD_DESC; |
| 706 | IPA_DUMP_BUFF(mem->base, mem->phys_base, mem->size); |
| 707 | |
| 708 | if (ipa_send_cmd(1, &desc)) { |
| 709 | IPAERR("fail to send immediate command\n"); |
| 710 | goto fail_send_cmd; |
| 711 | } |
| 712 | |
| 713 | __ipa_reap_sys_flt_tbls(ip); |
| 714 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, mem->phys_base); |
| 715 | kfree(cmd); |
| 716 | kfree(mem); |
| 717 | |
| 718 | return 0; |
| 719 | |
| 720 | fail_send_cmd: |
| 721 | if (mem->phys_base) |
| 722 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, |
| 723 | mem->phys_base); |
| 724 | fail_hw_tbl_gen: |
| 725 | kfree(cmd); |
| 726 | fail_alloc_cmd: |
| 727 | kfree(mem); |
| 728 | fail_alloc_mem: |
| 729 | |
| 730 | return -EPERM; |
| 731 | } |
| 732 | |
| 733 | static int ipa_generate_flt_hw_tbl_v2(enum ipa_ip_type ip, |
| 734 | struct ipa_mem_buffer *mem, struct ipa_mem_buffer *head1, |
| 735 | struct ipa_mem_buffer *head2) |
| 736 | { |
| 737 | int i; |
| 738 | u32 hdr_sz; |
| 739 | int num_words; |
| 740 | u32 *entr; |
| 741 | u32 body_start_offset; |
| 742 | u32 hdr_top; |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 743 | int res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 744 | |
| 745 | if (ip == IPA_IP_v4) |
| 746 | body_start_offset = IPA_MEM_PART(apps_v4_flt_ofst) - |
| 747 | IPA_MEM_PART(v4_flt_ofst); |
| 748 | else |
| 749 | body_start_offset = IPA_MEM_PART(apps_v6_flt_ofst) - |
| 750 | IPA_MEM_PART(v6_flt_ofst); |
| 751 | |
| 752 | num_words = 7; |
| 753 | head1->size = num_words * 4; |
| 754 | head1->base = dma_alloc_coherent(ipa_ctx->pdev, head1->size, |
| 755 | &head1->phys_base, GFP_KERNEL); |
| 756 | if (!head1->base) { |
| 757 | IPAERR("fail to alloc DMA buff of size %d\n", head1->size); |
| 758 | goto err; |
| 759 | } |
| 760 | entr = (u32 *)head1->base; |
| 761 | for (i = 0; i < num_words; i++) { |
| 762 | *entr = ipa_ctx->empty_rt_tbl_mem.phys_base; |
| 763 | entr++; |
| 764 | } |
| 765 | |
| 766 | num_words = 9; |
| 767 | head2->size = num_words * 4; |
| 768 | head2->base = dma_alloc_coherent(ipa_ctx->pdev, head2->size, |
| 769 | &head2->phys_base, GFP_KERNEL); |
| 770 | if (!head2->base) { |
| 771 | IPAERR("fail to alloc DMA buff of size %d\n", head2->size); |
| 772 | goto head_err; |
| 773 | } |
| 774 | entr = (u32 *)head2->base; |
| 775 | for (i = 0; i < num_words; i++) { |
| 776 | *entr = ipa_ctx->empty_rt_tbl_mem.phys_base; |
| 777 | entr++; |
| 778 | } |
| 779 | |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 780 | res = ipa_get_flt_hw_tbl_size(ip, &hdr_sz); |
| 781 | if (res < 0) { |
| 782 | IPAERR("ipa_get_flt_hw_tbl_size failed %d\n", res); |
| 783 | goto body_err; |
| 784 | } |
| 785 | |
| 786 | mem->size = res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 787 | mem->size -= hdr_sz; |
| 788 | mem->size = IPA_HW_TABLE_ALIGNMENT(mem->size); |
| 789 | |
| 790 | if (mem->size) { |
| 791 | mem->base = dma_alloc_coherent(ipa_ctx->pdev, mem->size, |
| 792 | &mem->phys_base, GFP_KERNEL); |
| 793 | if (!mem->base) { |
| 794 | IPAERR("fail to alloc DMA buff of size %d\n", |
| 795 | mem->size); |
| 796 | goto body_err; |
| 797 | } |
| 798 | memset(mem->base, 0, mem->size); |
| 799 | } |
| 800 | |
| 801 | if (ipa_generate_flt_hw_tbl_common(ip, mem->base, head1->base, |
| 802 | body_start_offset, head2->base, &hdr_top)) { |
| 803 | IPAERR("fail to generate FLT HW table\n"); |
| 804 | goto proc_err; |
| 805 | } |
| 806 | |
| 807 | IPADBG("HEAD1\n"); |
| 808 | IPA_DUMP_BUFF(head1->base, head1->phys_base, head1->size); |
| 809 | IPADBG("HEAD2\n"); |
| 810 | IPA_DUMP_BUFF(head2->base, head2->phys_base, head2->size); |
| 811 | if (mem->size) { |
| 812 | IPADBG("BODY\n"); |
| 813 | IPA_DUMP_BUFF(mem->base, mem->phys_base, mem->size); |
| 814 | } |
| 815 | |
| 816 | return 0; |
| 817 | |
| 818 | proc_err: |
| 819 | if (mem->size) |
| 820 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, |
| 821 | mem->phys_base); |
| 822 | body_err: |
| 823 | dma_free_coherent(ipa_ctx->pdev, head2->size, head2->base, |
| 824 | head2->phys_base); |
| 825 | head_err: |
| 826 | dma_free_coherent(ipa_ctx->pdev, head1->size, head1->base, |
| 827 | head1->phys_base); |
| 828 | err: |
| 829 | return -EPERM; |
| 830 | } |
| 831 | |
| 832 | int __ipa_commit_flt_v2(enum ipa_ip_type ip) |
| 833 | { |
| 834 | struct ipa_desc *desc; |
| 835 | struct ipa_hw_imm_cmd_dma_shared_mem *cmd; |
| 836 | struct ipa_mem_buffer body; |
| 837 | struct ipa_mem_buffer head1; |
| 838 | struct ipa_mem_buffer head2; |
| 839 | int rc = 0; |
| 840 | u32 local_addrb; |
| 841 | u32 local_addrh; |
| 842 | bool lcl; |
| 843 | int num_desc = 0; |
| 844 | int i; |
| 845 | u16 avail; |
Utkarsh Saxena | 67d59b6 | 2017-05-16 22:41:50 +0530 | [diff] [blame] | 846 | gfp_t flag = GFP_ATOMIC | (ipa_ctx->use_dma_zone ? GFP_DMA : 0); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 847 | |
| 848 | desc = kzalloc(16 * sizeof(*desc), GFP_ATOMIC); |
| 849 | if (desc == NULL) { |
| 850 | IPAERR("fail to alloc desc blob ip %d\n", ip); |
| 851 | rc = -ENOMEM; |
| 852 | goto fail_desc; |
| 853 | } |
| 854 | |
Utkarsh Saxena | 67d59b6 | 2017-05-16 22:41:50 +0530 | [diff] [blame] | 855 | cmd = kzalloc(16 * sizeof(*cmd), flag); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 856 | if (cmd == NULL) { |
| 857 | IPAERR("fail to alloc cmd blob ip %d\n", ip); |
| 858 | rc = -ENOMEM; |
| 859 | goto fail_imm; |
| 860 | } |
| 861 | |
| 862 | if (ip == IPA_IP_v4) { |
| 863 | avail = ipa_ctx->ip4_flt_tbl_lcl ? |
| 864 | IPA_MEM_PART(apps_v4_flt_size) : |
| 865 | IPA_MEM_PART(v4_flt_size_ddr); |
| 866 | local_addrh = ipa_ctx->smem_restricted_bytes + |
| 867 | IPA_MEM_PART(v4_flt_ofst) + 4; |
| 868 | local_addrb = ipa_ctx->smem_restricted_bytes + |
| 869 | IPA_MEM_PART(apps_v4_flt_ofst); |
| 870 | lcl = ipa_ctx->ip4_flt_tbl_lcl; |
| 871 | } else { |
| 872 | avail = ipa_ctx->ip6_flt_tbl_lcl ? |
| 873 | IPA_MEM_PART(apps_v6_flt_size) : |
| 874 | IPA_MEM_PART(v6_flt_size_ddr); |
| 875 | local_addrh = ipa_ctx->smem_restricted_bytes + |
| 876 | IPA_MEM_PART(v6_flt_ofst) + 4; |
| 877 | local_addrb = ipa_ctx->smem_restricted_bytes + |
| 878 | IPA_MEM_PART(apps_v6_flt_ofst); |
| 879 | lcl = ipa_ctx->ip6_flt_tbl_lcl; |
| 880 | } |
| 881 | |
| 882 | if (ipa_generate_flt_hw_tbl_v2(ip, &body, &head1, &head2)) { |
| 883 | IPAERR("fail to generate FLT HW TBL ip %d\n", ip); |
| 884 | rc = -EFAULT; |
| 885 | goto fail_gen; |
| 886 | } |
| 887 | |
| 888 | if (body.size > avail) { |
| 889 | IPAERR("tbl too big, needed %d avail %d\n", body.size, avail); |
| 890 | goto fail_send_cmd; |
| 891 | } |
| 892 | |
| 893 | cmd[num_desc].size = 4; |
| 894 | cmd[num_desc].system_addr = head1.phys_base; |
| 895 | cmd[num_desc].local_addr = local_addrh; |
| 896 | |
| 897 | desc[num_desc].opcode = IPA_DMA_SHARED_MEM; |
| 898 | desc[num_desc].pyld = &cmd[num_desc]; |
| 899 | desc[num_desc].len = sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| 900 | desc[num_desc++].type = IPA_IMM_CMD_DESC; |
| 901 | |
| 902 | for (i = 0; i < 6; i++) { |
| 903 | if (ipa_ctx->skip_ep_cfg_shadow[i]) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 904 | IPADBG_LOW("skip %d\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 905 | continue; |
| 906 | } |
| 907 | |
| 908 | if (ipa2_get_ep_mapping(IPA_CLIENT_APPS_WAN_CONS) == i || |
| 909 | ipa2_get_ep_mapping(IPA_CLIENT_APPS_LAN_CONS) == i || |
| 910 | ipa2_get_ep_mapping(IPA_CLIENT_APPS_CMD_PROD) == i || |
| 911 | (ipa2_get_ep_mapping(IPA_CLIENT_APPS_LAN_WAN_PROD) == i |
| 912 | && ipa_ctx->modem_cfg_emb_pipe_flt)) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 913 | IPADBG_LOW("skip %d\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 914 | continue; |
| 915 | } |
| 916 | |
| 917 | if (ip == IPA_IP_v4) { |
| 918 | local_addrh = ipa_ctx->smem_restricted_bytes + |
| 919 | IPA_MEM_PART(v4_flt_ofst) + |
| 920 | 8 + i * 4; |
| 921 | } else { |
| 922 | local_addrh = ipa_ctx->smem_restricted_bytes + |
| 923 | IPA_MEM_PART(v6_flt_ofst) + |
| 924 | 8 + i * 4; |
| 925 | } |
| 926 | cmd[num_desc].size = 4; |
| 927 | cmd[num_desc].system_addr = head1.phys_base + 4 + i * 4; |
| 928 | cmd[num_desc].local_addr = local_addrh; |
| 929 | |
| 930 | desc[num_desc].opcode = IPA_DMA_SHARED_MEM; |
| 931 | desc[num_desc].pyld = &cmd[num_desc]; |
| 932 | desc[num_desc].len = |
| 933 | sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| 934 | desc[num_desc++].type = IPA_IMM_CMD_DESC; |
| 935 | } |
| 936 | |
| 937 | for (i = 11; i < ipa_ctx->ipa_num_pipes; i++) { |
| 938 | if (ipa_ctx->skip_ep_cfg_shadow[i]) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 939 | IPADBG_LOW("skip %d\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 940 | continue; |
| 941 | } |
| 942 | if (ipa2_get_ep_mapping(IPA_CLIENT_APPS_LAN_WAN_PROD) == i && |
| 943 | ipa_ctx->modem_cfg_emb_pipe_flt) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 944 | IPADBG_LOW("skip %d\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 945 | continue; |
| 946 | } |
| 947 | if (ip == IPA_IP_v4) { |
| 948 | local_addrh = ipa_ctx->smem_restricted_bytes + |
| 949 | IPA_MEM_PART(v4_flt_ofst) + |
| 950 | 13 * 4 + (i - 11) * 4; |
| 951 | } else { |
| 952 | local_addrh = ipa_ctx->smem_restricted_bytes + |
| 953 | IPA_MEM_PART(v6_flt_ofst) + |
| 954 | 13 * 4 + (i - 11) * 4; |
| 955 | } |
| 956 | cmd[num_desc].size = 4; |
| 957 | cmd[num_desc].system_addr = head2.phys_base + (i - 11) * 4; |
| 958 | cmd[num_desc].local_addr = local_addrh; |
| 959 | |
| 960 | desc[num_desc].opcode = IPA_DMA_SHARED_MEM; |
| 961 | desc[num_desc].pyld = &cmd[num_desc]; |
| 962 | desc[num_desc].len = |
| 963 | sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| 964 | desc[num_desc++].type = IPA_IMM_CMD_DESC; |
| 965 | } |
| 966 | |
| 967 | if (lcl) { |
| 968 | cmd[num_desc].size = body.size; |
| 969 | cmd[num_desc].system_addr = body.phys_base; |
| 970 | cmd[num_desc].local_addr = local_addrb; |
| 971 | |
| 972 | desc[num_desc].opcode = IPA_DMA_SHARED_MEM; |
| 973 | desc[num_desc].pyld = &cmd[num_desc]; |
| 974 | desc[num_desc].len = |
| 975 | sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| 976 | desc[num_desc++].type = IPA_IMM_CMD_DESC; |
| 977 | |
| 978 | if (ipa_send_cmd(num_desc, desc)) { |
| 979 | IPAERR("fail to send immediate command\n"); |
| 980 | rc = -EFAULT; |
| 981 | goto fail_send_cmd; |
| 982 | } |
| 983 | } else { |
| 984 | if (ipa_send_cmd(num_desc, desc)) { |
| 985 | IPAERR("fail to send immediate command\n"); |
| 986 | rc = -EFAULT; |
| 987 | goto fail_send_cmd; |
| 988 | } |
| 989 | } |
| 990 | |
| 991 | __ipa_reap_sys_flt_tbls(ip); |
| 992 | |
| 993 | fail_send_cmd: |
| 994 | if (body.size) |
| 995 | dma_free_coherent(ipa_ctx->pdev, body.size, body.base, |
| 996 | body.phys_base); |
| 997 | dma_free_coherent(ipa_ctx->pdev, head1.size, head1.base, |
| 998 | head1.phys_base); |
| 999 | dma_free_coherent(ipa_ctx->pdev, head2.size, head2.base, |
| 1000 | head2.phys_base); |
| 1001 | fail_gen: |
| 1002 | kfree(cmd); |
| 1003 | fail_imm: |
| 1004 | kfree(desc); |
| 1005 | fail_desc: |
| 1006 | return rc; |
| 1007 | } |
| 1008 | |
| 1009 | static int __ipa_add_flt_rule(struct ipa_flt_tbl *tbl, enum ipa_ip_type ip, |
| 1010 | const struct ipa_flt_rule *rule, u8 add_rear, |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1011 | u32 *rule_hdl, bool user) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1012 | { |
| 1013 | struct ipa_flt_entry *entry; |
| 1014 | struct ipa_rt_tbl *rt_tbl = NULL; |
| 1015 | int id; |
| 1016 | |
| 1017 | if (rule->action != IPA_PASS_TO_EXCEPTION) { |
| 1018 | if (!rule->eq_attrib_type) { |
| 1019 | if (!rule->rt_tbl_hdl) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1020 | IPAERR_RL("invalid RT tbl\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1021 | goto error; |
| 1022 | } |
| 1023 | |
| 1024 | rt_tbl = ipa_id_find(rule->rt_tbl_hdl); |
| 1025 | if (rt_tbl == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1026 | IPAERR_RL("RT tbl not found\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1027 | goto error; |
| 1028 | } |
| 1029 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1030 | if (rt_tbl->cookie != IPA_RT_TBL_COOKIE) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1031 | IPAERR_RL("RT table cookie is invalid\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1032 | goto error; |
| 1033 | } |
| 1034 | } else { |
| 1035 | if (rule->rt_tbl_idx > ((ip == IPA_IP_v4) ? |
| 1036 | IPA_MEM_PART(v4_modem_rt_index_hi) : |
| 1037 | IPA_MEM_PART(v6_modem_rt_index_hi))) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1038 | IPAERR_RL("invalid RT tbl\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1039 | goto error; |
| 1040 | } |
| 1041 | } |
Mohammed Javid | 7bfd014 | 2017-10-05 23:39:39 +0530 | [diff] [blame] | 1042 | } else { |
| 1043 | if (rule->rt_tbl_idx > 0) { |
| 1044 | IPAERR_RL("invalid RT tbl\n"); |
| 1045 | goto error; |
| 1046 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1047 | } |
| 1048 | |
| 1049 | entry = kmem_cache_zalloc(ipa_ctx->flt_rule_cache, GFP_KERNEL); |
| 1050 | if (!entry) { |
| 1051 | IPAERR("failed to alloc FLT rule object\n"); |
| 1052 | goto error; |
| 1053 | } |
| 1054 | INIT_LIST_HEAD(&entry->link); |
| 1055 | entry->rule = *rule; |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1056 | entry->cookie = IPA_FLT_COOKIE; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1057 | entry->rt_tbl = rt_tbl; |
| 1058 | entry->tbl = tbl; |
| 1059 | if (add_rear) { |
| 1060 | if (tbl->sticky_rear) |
| 1061 | list_add_tail(&entry->link, |
| 1062 | tbl->head_flt_rule_list.prev); |
| 1063 | else |
| 1064 | list_add_tail(&entry->link, &tbl->head_flt_rule_list); |
| 1065 | } else { |
| 1066 | list_add(&entry->link, &tbl->head_flt_rule_list); |
| 1067 | } |
| 1068 | tbl->rule_cnt++; |
| 1069 | if (entry->rt_tbl) |
| 1070 | entry->rt_tbl->ref_cnt++; |
| 1071 | id = ipa_id_alloc(entry); |
| 1072 | if (id < 0) { |
| 1073 | IPAERR("failed to add to tree\n"); |
| 1074 | WARN_ON(1); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1075 | goto ipa_insert_failed; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1076 | } |
| 1077 | *rule_hdl = id; |
| 1078 | entry->id = id; |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1079 | entry->ipacm_installed = user; |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 1080 | IPADBG_LOW("add flt rule rule_cnt=%d\n", tbl->rule_cnt); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1081 | |
| 1082 | return 0; |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1083 | ipa_insert_failed: |
| 1084 | tbl->rule_cnt--; |
| 1085 | if (entry->rt_tbl) |
| 1086 | entry->rt_tbl->ref_cnt--; |
| 1087 | list_del(&entry->link); |
| 1088 | kmem_cache_free(ipa_ctx->flt_rule_cache, entry); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1089 | error: |
| 1090 | return -EPERM; |
| 1091 | } |
| 1092 | |
| 1093 | static int __ipa_del_flt_rule(u32 rule_hdl) |
| 1094 | { |
| 1095 | struct ipa_flt_entry *entry; |
| 1096 | int id; |
| 1097 | |
| 1098 | entry = ipa_id_find(rule_hdl); |
| 1099 | if (entry == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1100 | IPAERR_RL("lookup failed\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1101 | return -EINVAL; |
| 1102 | } |
| 1103 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1104 | if (entry->cookie != IPA_FLT_COOKIE) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1105 | IPAERR_RL("bad params\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1106 | return -EINVAL; |
| 1107 | } |
| 1108 | id = entry->id; |
| 1109 | |
| 1110 | list_del(&entry->link); |
| 1111 | entry->tbl->rule_cnt--; |
| 1112 | if (entry->rt_tbl) |
| 1113 | entry->rt_tbl->ref_cnt--; |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 1114 | IPADBG_LOW("del flt rule rule_cnt=%d\n", entry->tbl->rule_cnt); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1115 | entry->cookie = 0; |
| 1116 | kmem_cache_free(ipa_ctx->flt_rule_cache, entry); |
| 1117 | |
| 1118 | /* remove the handle from the database */ |
| 1119 | ipa_id_remove(id); |
| 1120 | |
| 1121 | return 0; |
| 1122 | } |
| 1123 | |
| 1124 | static int __ipa_mdfy_flt_rule(struct ipa_flt_rule_mdfy *frule, |
| 1125 | enum ipa_ip_type ip) |
| 1126 | { |
| 1127 | struct ipa_flt_entry *entry; |
| 1128 | struct ipa_rt_tbl *rt_tbl = NULL; |
| 1129 | |
| 1130 | entry = ipa_id_find(frule->rule_hdl); |
| 1131 | if (entry == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1132 | IPAERR_RL("lookup failed\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1133 | goto error; |
| 1134 | } |
| 1135 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1136 | if (entry->cookie != IPA_FLT_COOKIE) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1137 | IPAERR_RL("bad params\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1138 | goto error; |
| 1139 | } |
| 1140 | |
| 1141 | if (entry->rt_tbl) |
| 1142 | entry->rt_tbl->ref_cnt--; |
| 1143 | |
| 1144 | if (frule->rule.action != IPA_PASS_TO_EXCEPTION) { |
| 1145 | if (!frule->rule.eq_attrib_type) { |
| 1146 | if (!frule->rule.rt_tbl_hdl) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1147 | IPAERR_RL("invalid RT tbl\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1148 | goto error; |
| 1149 | } |
| 1150 | |
| 1151 | rt_tbl = ipa_id_find(frule->rule.rt_tbl_hdl); |
| 1152 | if (rt_tbl == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1153 | IPAERR_RL("RT tbl not found\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1154 | goto error; |
| 1155 | } |
| 1156 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1157 | if (rt_tbl->cookie != IPA_RT_TBL_COOKIE) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1158 | IPAERR_RL("RT table cookie is invalid\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1159 | goto error; |
| 1160 | } |
| 1161 | } else { |
| 1162 | if (frule->rule.rt_tbl_idx > ((ip == IPA_IP_v4) ? |
| 1163 | IPA_MEM_PART(v4_modem_rt_index_hi) : |
| 1164 | IPA_MEM_PART(v6_modem_rt_index_hi))) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1165 | IPAERR_RL("invalid RT tbl\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1166 | goto error; |
| 1167 | } |
| 1168 | } |
Mohammed Javid | 7bfd014 | 2017-10-05 23:39:39 +0530 | [diff] [blame] | 1169 | } else { |
| 1170 | if (frule->rule.rt_tbl_idx > 0) { |
| 1171 | IPAERR_RL("invalid RT tbl\n"); |
| 1172 | goto error; |
| 1173 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1174 | } |
| 1175 | |
| 1176 | entry->rule = frule->rule; |
| 1177 | entry->rt_tbl = rt_tbl; |
| 1178 | if (entry->rt_tbl) |
| 1179 | entry->rt_tbl->ref_cnt++; |
| 1180 | entry->hw_len = 0; |
| 1181 | |
| 1182 | return 0; |
| 1183 | |
| 1184 | error: |
| 1185 | return -EPERM; |
| 1186 | } |
| 1187 | |
| 1188 | static int __ipa_add_global_flt_rule(enum ipa_ip_type ip, |
| 1189 | const struct ipa_flt_rule *rule, u8 add_rear, u32 *rule_hdl) |
| 1190 | { |
| 1191 | struct ipa_flt_tbl *tbl; |
| 1192 | |
| 1193 | if (rule == NULL || rule_hdl == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1194 | IPAERR_RL("bad parms rule=%p rule_hdl=%p\n", rule, rule_hdl); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1195 | |
| 1196 | return -EINVAL; |
| 1197 | } |
| 1198 | |
| 1199 | tbl = &ipa_ctx->glob_flt_tbl[ip]; |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 1200 | IPADBG_LOW("add global flt rule ip=%d\n", ip); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1201 | |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1202 | return __ipa_add_flt_rule(tbl, ip, rule, add_rear, rule_hdl, false); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1203 | } |
| 1204 | |
| 1205 | static int __ipa_add_ep_flt_rule(enum ipa_ip_type ip, enum ipa_client_type ep, |
| 1206 | const struct ipa_flt_rule *rule, u8 add_rear, |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1207 | u32 *rule_hdl, bool user) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1208 | { |
| 1209 | struct ipa_flt_tbl *tbl; |
| 1210 | int ipa_ep_idx; |
| 1211 | |
| 1212 | if (rule == NULL || rule_hdl == NULL || ep >= IPA_CLIENT_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1213 | IPAERR_RL("bad parms rule=%p rule_hdl=%p ep=%d\n", rule, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1214 | rule_hdl, ep); |
| 1215 | |
| 1216 | return -EINVAL; |
| 1217 | } |
| 1218 | ipa_ep_idx = ipa2_get_ep_mapping(ep); |
| 1219 | if (ipa_ep_idx == IPA_FLT_TABLE_INDEX_NOT_FOUND) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1220 | IPAERR_RL("ep not valid ep=%d\n", ep); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1221 | return -EINVAL; |
| 1222 | } |
| 1223 | if (ipa_ctx->ep[ipa_ep_idx].valid == 0) |
| 1224 | IPADBG("ep not connected ep_idx=%d\n", ipa_ep_idx); |
| 1225 | |
| 1226 | tbl = &ipa_ctx->flt_tbl[ipa_ep_idx][ip]; |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 1227 | IPADBG_LOW("add ep flt rule ip=%d ep=%d\n", ip, ep); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1228 | |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1229 | return __ipa_add_flt_rule(tbl, ip, rule, add_rear, rule_hdl, user); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1230 | } |
| 1231 | |
| 1232 | /** |
| 1233 | * ipa2_add_flt_rule() - Add the specified filtering rules to SW and optionally |
| 1234 | * commit to IPA HW |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1235 | * @rules: [inout] set of filtering rules to add |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1236 | * |
| 1237 | * Returns: 0 on success, negative on failure |
| 1238 | * |
| 1239 | * Note: Should not be called from atomic context |
| 1240 | */ |
| 1241 | int ipa2_add_flt_rule(struct ipa_ioc_add_flt_rule *rules) |
| 1242 | { |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1243 | return ipa2_add_flt_rule_usr(rules, false); |
| 1244 | } |
| 1245 | |
| 1246 | /** |
| 1247 | * ipa2_add_flt_rule_usr() - Add the specified filtering rules |
| 1248 | * to SW and optionally commit to IPA HW |
| 1249 | * @rules: [inout] set of filtering rules to add |
| 1250 | * @user_only: [in] indicate rules installed by userspace |
| 1251 | * |
| 1252 | * Returns: 0 on success, negative on failure |
| 1253 | * |
| 1254 | * Note: Should not be called from atomic context |
| 1255 | */ |
| 1256 | int ipa2_add_flt_rule_usr(struct ipa_ioc_add_flt_rule *rules, bool user_only) |
| 1257 | { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1258 | int i; |
| 1259 | int result; |
| 1260 | |
| 1261 | if (rules == NULL || rules->num_rules == 0 || |
| 1262 | rules->ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1263 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1264 | |
| 1265 | return -EINVAL; |
| 1266 | } |
| 1267 | |
| 1268 | mutex_lock(&ipa_ctx->lock); |
| 1269 | for (i = 0; i < rules->num_rules; i++) { |
| 1270 | if (rules->global) |
| 1271 | result = __ipa_add_global_flt_rule(rules->ip, |
| 1272 | &rules->rules[i].rule, |
| 1273 | rules->rules[i].at_rear, |
| 1274 | &rules->rules[i].flt_rule_hdl); |
| 1275 | else |
| 1276 | result = __ipa_add_ep_flt_rule(rules->ip, rules->ep, |
| 1277 | &rules->rules[i].rule, |
| 1278 | rules->rules[i].at_rear, |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1279 | &rules->rules[i].flt_rule_hdl, |
| 1280 | user_only); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1281 | if (result) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1282 | IPAERR_RL("failed to add flt rule %d\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1283 | rules->rules[i].status = IPA_FLT_STATUS_OF_ADD_FAILED; |
| 1284 | } else { |
| 1285 | rules->rules[i].status = 0; |
| 1286 | } |
| 1287 | } |
| 1288 | |
| 1289 | if (rules->commit) |
| 1290 | if (ipa_ctx->ctrl->ipa_commit_flt(rules->ip)) { |
| 1291 | result = -EPERM; |
| 1292 | goto bail; |
| 1293 | } |
| 1294 | result = 0; |
| 1295 | bail: |
| 1296 | mutex_unlock(&ipa_ctx->lock); |
| 1297 | |
| 1298 | return result; |
| 1299 | } |
| 1300 | |
| 1301 | /** |
| 1302 | * ipa2_del_flt_rule() - Remove the specified filtering rules from SW and |
| 1303 | * optionally commit to IPA HW |
| 1304 | * |
| 1305 | * Returns: 0 on success, negative on failure |
| 1306 | * |
| 1307 | * Note: Should not be called from atomic context |
| 1308 | */ |
| 1309 | int ipa2_del_flt_rule(struct ipa_ioc_del_flt_rule *hdls) |
| 1310 | { |
| 1311 | int i; |
| 1312 | int result; |
| 1313 | |
| 1314 | if (hdls == NULL || hdls->num_hdls == 0 || hdls->ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1315 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1316 | return -EINVAL; |
| 1317 | } |
| 1318 | |
| 1319 | mutex_lock(&ipa_ctx->lock); |
| 1320 | for (i = 0; i < hdls->num_hdls; i++) { |
| 1321 | if (__ipa_del_flt_rule(hdls->hdl[i].hdl)) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1322 | IPAERR_RL("failed to del rt rule %i\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1323 | hdls->hdl[i].status = IPA_FLT_STATUS_OF_DEL_FAILED; |
| 1324 | } else { |
| 1325 | hdls->hdl[i].status = 0; |
| 1326 | } |
| 1327 | } |
| 1328 | |
| 1329 | if (hdls->commit) |
| 1330 | if (ipa_ctx->ctrl->ipa_commit_flt(hdls->ip)) { |
| 1331 | result = -EPERM; |
| 1332 | goto bail; |
| 1333 | } |
| 1334 | result = 0; |
| 1335 | bail: |
| 1336 | mutex_unlock(&ipa_ctx->lock); |
| 1337 | |
| 1338 | return result; |
| 1339 | } |
| 1340 | |
| 1341 | /** |
| 1342 | * ipa2_mdfy_flt_rule() - Modify the specified filtering rules in SW and |
| 1343 | * optionally commit to IPA HW |
| 1344 | * |
| 1345 | * Returns: 0 on success, negative on failure |
| 1346 | * |
| 1347 | * Note: Should not be called from atomic context |
| 1348 | */ |
| 1349 | int ipa2_mdfy_flt_rule(struct ipa_ioc_mdfy_flt_rule *hdls) |
| 1350 | { |
| 1351 | int i; |
| 1352 | int result; |
| 1353 | |
| 1354 | if (hdls == NULL || hdls->num_rules == 0 || hdls->ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1355 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1356 | return -EINVAL; |
| 1357 | } |
| 1358 | |
| 1359 | mutex_lock(&ipa_ctx->lock); |
| 1360 | for (i = 0; i < hdls->num_rules; i++) { |
| 1361 | if (__ipa_mdfy_flt_rule(&hdls->rules[i], hdls->ip)) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1362 | IPAERR_RL("failed to mdfy rt rule %i\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1363 | hdls->rules[i].status = IPA_FLT_STATUS_OF_MDFY_FAILED; |
| 1364 | } else { |
| 1365 | hdls->rules[i].status = 0; |
| 1366 | } |
| 1367 | } |
| 1368 | |
| 1369 | if (hdls->commit) |
| 1370 | if (ipa_ctx->ctrl->ipa_commit_flt(hdls->ip)) { |
| 1371 | result = -EPERM; |
| 1372 | goto bail; |
| 1373 | } |
| 1374 | result = 0; |
| 1375 | bail: |
| 1376 | mutex_unlock(&ipa_ctx->lock); |
| 1377 | |
| 1378 | return result; |
| 1379 | } |
| 1380 | |
| 1381 | |
| 1382 | /** |
| 1383 | * ipa2_commit_flt() - Commit the current SW filtering table of specified type |
| 1384 | * to IPA HW |
| 1385 | * @ip: [in] the family of routing tables |
| 1386 | * |
| 1387 | * Returns: 0 on success, negative on failure |
| 1388 | * |
| 1389 | * Note: Should not be called from atomic context |
| 1390 | */ |
| 1391 | int ipa2_commit_flt(enum ipa_ip_type ip) |
| 1392 | { |
| 1393 | int result; |
| 1394 | |
| 1395 | if (ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1396 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1397 | return -EINVAL; |
| 1398 | } |
| 1399 | |
| 1400 | mutex_lock(&ipa_ctx->lock); |
| 1401 | |
| 1402 | if (ipa_ctx->ctrl->ipa_commit_flt(ip)) { |
| 1403 | result = -EPERM; |
| 1404 | goto bail; |
| 1405 | } |
| 1406 | result = 0; |
| 1407 | |
| 1408 | bail: |
| 1409 | mutex_unlock(&ipa_ctx->lock); |
| 1410 | |
| 1411 | return result; |
| 1412 | } |
| 1413 | |
| 1414 | /** |
| 1415 | * ipa2_reset_flt() - Reset the current SW filtering table of specified type |
| 1416 | * (does not commit to HW) |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1417 | * @ip: [in] the family of routing tables |
| 1418 | * @user_only: [in] indicate rules deleted by userspace |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1419 | * |
| 1420 | * Returns: 0 on success, negative on failure |
| 1421 | * |
| 1422 | * Note: Should not be called from atomic context |
| 1423 | */ |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1424 | int ipa2_reset_flt(enum ipa_ip_type ip, bool user_only) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1425 | { |
| 1426 | struct ipa_flt_tbl *tbl; |
| 1427 | struct ipa_flt_entry *entry; |
| 1428 | struct ipa_flt_entry *next; |
| 1429 | int i; |
| 1430 | int id; |
| 1431 | |
| 1432 | if (ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1433 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1434 | return -EINVAL; |
| 1435 | } |
| 1436 | |
| 1437 | tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| 1438 | mutex_lock(&ipa_ctx->lock); |
| 1439 | IPADBG("reset flt ip=%d\n", ip); |
| 1440 | list_for_each_entry_safe(entry, next, &tbl->head_flt_rule_list, link) { |
| 1441 | if (ipa_id_find(entry->id) == NULL) { |
| 1442 | WARN_ON(1); |
| 1443 | mutex_unlock(&ipa_ctx->lock); |
| 1444 | return -EFAULT; |
| 1445 | } |
| 1446 | |
| 1447 | if ((ip == IPA_IP_v4 && |
| 1448 | entry->rule.attrib.attrib_mask == IPA_FLT_PROTOCOL && |
| 1449 | entry->rule.attrib.u.v4.protocol == |
| 1450 | IPA_INVALID_L4_PROTOCOL) || |
| 1451 | (ip == IPA_IP_v6 && |
| 1452 | entry->rule.attrib.attrib_mask == IPA_FLT_NEXT_HDR && |
| 1453 | entry->rule.attrib.u.v6.next_hdr == |
| 1454 | IPA_INVALID_L4_PROTOCOL)) |
| 1455 | continue; |
| 1456 | |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1457 | if (!user_only || |
| 1458 | entry->ipacm_installed) { |
| 1459 | list_del(&entry->link); |
| 1460 | entry->tbl->rule_cnt--; |
| 1461 | if (entry->rt_tbl) |
| 1462 | entry->rt_tbl->ref_cnt--; |
| 1463 | entry->cookie = 0; |
| 1464 | id = entry->id; |
| 1465 | kmem_cache_free(ipa_ctx->flt_rule_cache, entry); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1466 | |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1467 | /* remove the handle from the database */ |
| 1468 | ipa_id_remove(id); |
| 1469 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1470 | } |
| 1471 | |
| 1472 | for (i = 0; i < ipa_ctx->ipa_num_pipes; i++) { |
| 1473 | tbl = &ipa_ctx->flt_tbl[i][ip]; |
| 1474 | list_for_each_entry_safe(entry, next, &tbl->head_flt_rule_list, |
| 1475 | link) { |
| 1476 | if (ipa_id_find(entry->id) == NULL) { |
| 1477 | WARN_ON(1); |
| 1478 | mutex_unlock(&ipa_ctx->lock); |
| 1479 | return -EFAULT; |
| 1480 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1481 | |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1482 | if (!user_only || |
| 1483 | entry->ipacm_installed) { |
| 1484 | list_del(&entry->link); |
| 1485 | entry->tbl->rule_cnt--; |
| 1486 | if (entry->rt_tbl) |
| 1487 | entry->rt_tbl->ref_cnt--; |
| 1488 | entry->cookie = 0; |
| 1489 | id = entry->id; |
| 1490 | kmem_cache_free(ipa_ctx->flt_rule_cache, |
| 1491 | entry); |
| 1492 | |
| 1493 | /* remove the handle from the database */ |
| 1494 | ipa_id_remove(id); |
| 1495 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1496 | } |
| 1497 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1498 | |
Skylar Chang | 5ec274f | 2018-05-03 02:18:34 -0700 | [diff] [blame^] | 1499 | /* commit the change to IPA-HW */ |
| 1500 | if (ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v4) || |
| 1501 | ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v6)) { |
| 1502 | IPAERR_RL("fail to commit flt-rule\n"); |
| 1503 | WARN_ON_RATELIMIT_IPA(1); |
| 1504 | mutex_unlock(&ipa_ctx->lock); |
| 1505 | return -EPERM; |
| 1506 | } |
| 1507 | mutex_unlock(&ipa_ctx->lock); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1508 | return 0; |
| 1509 | } |
| 1510 | |
| 1511 | void ipa_install_dflt_flt_rules(u32 ipa_ep_idx) |
| 1512 | { |
| 1513 | struct ipa_flt_tbl *tbl; |
| 1514 | struct ipa_ep_context *ep = &ipa_ctx->ep[ipa_ep_idx]; |
| 1515 | struct ipa_flt_rule rule; |
| 1516 | |
| 1517 | memset(&rule, 0, sizeof(rule)); |
| 1518 | |
| 1519 | mutex_lock(&ipa_ctx->lock); |
| 1520 | tbl = &ipa_ctx->flt_tbl[ipa_ep_idx][IPA_IP_v4]; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1521 | rule.action = IPA_PASS_TO_EXCEPTION; |
Sunil Paidimarri | 4dbe11c | 2016-11-09 17:29:06 -0800 | [diff] [blame] | 1522 | __ipa_add_flt_rule(tbl, IPA_IP_v4, &rule, true, |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1523 | &ep->dflt_flt4_rule_hdl, false); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1524 | ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v4); |
Sunil Paidimarri | 4dbe11c | 2016-11-09 17:29:06 -0800 | [diff] [blame] | 1525 | tbl->sticky_rear = true; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1526 | |
| 1527 | tbl = &ipa_ctx->flt_tbl[ipa_ep_idx][IPA_IP_v6]; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1528 | rule.action = IPA_PASS_TO_EXCEPTION; |
Sunil Paidimarri | 4dbe11c | 2016-11-09 17:29:06 -0800 | [diff] [blame] | 1529 | __ipa_add_flt_rule(tbl, IPA_IP_v6, &rule, true, |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1530 | &ep->dflt_flt6_rule_hdl, false); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1531 | ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v6); |
Sunil Paidimarri | 4dbe11c | 2016-11-09 17:29:06 -0800 | [diff] [blame] | 1532 | tbl->sticky_rear = true; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1533 | mutex_unlock(&ipa_ctx->lock); |
| 1534 | } |
| 1535 | |
| 1536 | void ipa_delete_dflt_flt_rules(u32 ipa_ep_idx) |
| 1537 | { |
Utkarsh Saxena | f6cc798 | 2017-03-28 22:51:46 +0530 | [diff] [blame] | 1538 | struct ipa_flt_tbl *tbl; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1539 | struct ipa_ep_context *ep = &ipa_ctx->ep[ipa_ep_idx]; |
| 1540 | |
| 1541 | mutex_lock(&ipa_ctx->lock); |
| 1542 | if (ep->dflt_flt4_rule_hdl) { |
Utkarsh Saxena | f6cc798 | 2017-03-28 22:51:46 +0530 | [diff] [blame] | 1543 | tbl = &ipa_ctx->flt_tbl[ipa_ep_idx][IPA_IP_v4]; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1544 | __ipa_del_flt_rule(ep->dflt_flt4_rule_hdl); |
| 1545 | ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v4); |
Utkarsh Saxena | f6cc798 | 2017-03-28 22:51:46 +0530 | [diff] [blame] | 1546 | /* Reset the sticky flag. */ |
| 1547 | tbl->sticky_rear = false; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1548 | ep->dflt_flt4_rule_hdl = 0; |
| 1549 | } |
| 1550 | if (ep->dflt_flt6_rule_hdl) { |
Utkarsh Saxena | f6cc798 | 2017-03-28 22:51:46 +0530 | [diff] [blame] | 1551 | tbl = &ipa_ctx->flt_tbl[ipa_ep_idx][IPA_IP_v6]; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1552 | __ipa_del_flt_rule(ep->dflt_flt6_rule_hdl); |
| 1553 | ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v6); |
Utkarsh Saxena | f6cc798 | 2017-03-28 22:51:46 +0530 | [diff] [blame] | 1554 | /* Reset the sticky flag. */ |
| 1555 | tbl->sticky_rear = false; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1556 | ep->dflt_flt6_rule_hdl = 0; |
| 1557 | } |
| 1558 | mutex_unlock(&ipa_ctx->lock); |
| 1559 | } |