Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2012-2017, 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 <linux/bitops.h> |
| 14 | #include "ipa_i.h" |
| 15 | |
| 16 | #define IPA_RT_TABLE_INDEX_NOT_FOUND (-1) |
| 17 | #define IPA_RT_TABLE_WORD_SIZE (4) |
| 18 | #define IPA_RT_INDEX_BITMAP_SIZE (32) |
| 19 | #define IPA_RT_TABLE_MEMORY_ALLIGNMENT (127) |
| 20 | #define IPA_RT_ENTRY_MEMORY_ALLIGNMENT (3) |
| 21 | #define IPA_RT_BIT_MASK (0x1) |
| 22 | #define IPA_RT_STATUS_OF_ADD_FAILED (-1) |
| 23 | #define IPA_RT_STATUS_OF_DEL_FAILED (-1) |
| 24 | #define IPA_RT_STATUS_OF_MDFY_FAILED (-1) |
| 25 | |
| 26 | /** |
| 27 | * __ipa_generate_rt_hw_rule_v2() - generates the routing hardware rule |
| 28 | * @ip: the ip address family type |
| 29 | * @entry: routing entry |
| 30 | * @buf: output buffer, buf == NULL means |
| 31 | * caller wants to know the size of the rule as seen |
| 32 | * by HW so they did not pass a valid buffer, we will use a |
| 33 | * scratch buffer instead. |
| 34 | * With this scheme we are going to |
| 35 | * generate the rule twice, once to know size using scratch |
| 36 | * buffer and second to write the rule to the actual caller |
| 37 | * supplied buffer which is of required size |
| 38 | * |
| 39 | * Returns: 0 on success, negative on failure |
| 40 | * |
| 41 | * caller needs to hold any needed locks to ensure integrity |
| 42 | * |
| 43 | */ |
| 44 | int __ipa_generate_rt_hw_rule_v2(enum ipa_ip_type ip, |
| 45 | struct ipa_rt_entry *entry, u8 *buf) |
| 46 | { |
| 47 | struct ipa_rt_rule_hw_hdr *rule_hdr; |
| 48 | const struct ipa_rt_rule *rule = |
| 49 | (const struct ipa_rt_rule *)&entry->rule; |
| 50 | u16 en_rule = 0; |
| 51 | u32 tmp[IPA_RT_FLT_HW_RULE_BUF_SIZE/4]; |
| 52 | u8 *start; |
| 53 | int pipe_idx; |
| 54 | |
| 55 | if (buf == NULL) { |
| 56 | memset(tmp, 0, IPA_RT_FLT_HW_RULE_BUF_SIZE); |
| 57 | buf = (u8 *)tmp; |
| 58 | } |
| 59 | |
| 60 | start = buf; |
| 61 | rule_hdr = (struct ipa_rt_rule_hw_hdr *)buf; |
| 62 | pipe_idx = ipa2_get_ep_mapping(entry->rule.dst); |
| 63 | if (pipe_idx == -1) { |
| 64 | IPAERR("Wrong destination pipe specified in RT rule\n"); |
| 65 | WARN_ON(1); |
| 66 | return -EPERM; |
| 67 | } |
| 68 | if (!IPA_CLIENT_IS_CONS(entry->rule.dst)) { |
| 69 | IPAERR("No RT rule on IPA_client_producer pipe.\n"); |
| 70 | IPAERR("pipe_idx: %d dst_pipe: %d\n", |
| 71 | pipe_idx, entry->rule.dst); |
| 72 | WARN_ON(1); |
| 73 | return -EPERM; |
| 74 | } |
| 75 | rule_hdr->u.hdr.pipe_dest_idx = pipe_idx; |
| 76 | rule_hdr->u.hdr.system = !ipa_ctx->hdr_tbl_lcl; |
| 77 | if (entry->hdr) { |
| 78 | rule_hdr->u.hdr.hdr_offset = |
| 79 | entry->hdr->offset_entry->offset >> 2; |
| 80 | } else { |
| 81 | rule_hdr->u.hdr.hdr_offset = 0; |
| 82 | } |
| 83 | buf += sizeof(struct ipa_rt_rule_hw_hdr); |
| 84 | |
| 85 | if (ipa_generate_hw_rule(ip, &rule->attrib, &buf, &en_rule)) { |
| 86 | IPAERR("fail to generate hw rule\n"); |
| 87 | return -EPERM; |
| 88 | } |
| 89 | |
| 90 | IPADBG("en_rule 0x%x\n", en_rule); |
| 91 | |
| 92 | rule_hdr->u.hdr.en_rule = en_rule; |
| 93 | ipa_write_32(rule_hdr->u.word, (u8 *)rule_hdr); |
| 94 | |
| 95 | if (entry->hw_len == 0) { |
| 96 | entry->hw_len = buf - start; |
| 97 | } else if (entry->hw_len != (buf - start)) { |
| 98 | IPAERR( |
| 99 | "hw_len differs b/w passes passed=0x%x calc=0x%xtd\n", |
| 100 | entry->hw_len, |
| 101 | (buf - start)); |
| 102 | return -EPERM; |
| 103 | } |
| 104 | |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * __ipa_generate_rt_hw_rule_v2_5() - generates the routing hardware rule |
| 110 | * @ip: the ip address family type |
| 111 | * @entry: routing entry |
| 112 | * @buf: output buffer, buf == NULL means |
| 113 | * caller wants to know the size of the rule as seen |
| 114 | * by HW so they did not pass a valid buffer, we will use a |
| 115 | * scratch buffer instead. |
| 116 | * With this scheme we are going to |
| 117 | * generate the rule twice, once to know size using scratch |
| 118 | * buffer and second to write the rule to the actual caller |
| 119 | * supplied buffer which is of required size |
| 120 | * |
| 121 | * Returns: 0 on success, negative on failure |
| 122 | * |
| 123 | * caller needs to hold any needed locks to ensure integrity |
| 124 | * |
| 125 | */ |
| 126 | int __ipa_generate_rt_hw_rule_v2_5(enum ipa_ip_type ip, |
| 127 | struct ipa_rt_entry *entry, u8 *buf) |
| 128 | { |
| 129 | struct ipa_rt_rule_hw_hdr *rule_hdr; |
| 130 | const struct ipa_rt_rule *rule = |
| 131 | (const struct ipa_rt_rule *)&entry->rule; |
| 132 | u16 en_rule = 0; |
| 133 | u32 tmp[IPA_RT_FLT_HW_RULE_BUF_SIZE/4]; |
| 134 | u8 *start; |
| 135 | int pipe_idx; |
| 136 | |
| 137 | if (buf == NULL) { |
| 138 | memset(tmp, 0, IPA_RT_FLT_HW_RULE_BUF_SIZE); |
| 139 | buf = (u8 *)tmp; |
| 140 | } |
| 141 | |
| 142 | start = buf; |
| 143 | rule_hdr = (struct ipa_rt_rule_hw_hdr *)buf; |
| 144 | pipe_idx = ipa2_get_ep_mapping(entry->rule.dst); |
| 145 | if (pipe_idx == -1) { |
| 146 | IPAERR("Wrong destination pipe specified in RT rule\n"); |
| 147 | WARN_ON(1); |
| 148 | return -EPERM; |
| 149 | } |
| 150 | if (!IPA_CLIENT_IS_CONS(entry->rule.dst)) { |
| 151 | IPAERR("No RT rule on IPA_client_producer pipe.\n"); |
| 152 | IPAERR("pipe_idx: %d dst_pipe: %d\n", |
| 153 | pipe_idx, entry->rule.dst); |
| 154 | WARN_ON(1); |
| 155 | return -EPERM; |
| 156 | } |
| 157 | rule_hdr->u.hdr_v2_5.pipe_dest_idx = pipe_idx; |
| 158 | if (entry->proc_ctx || (entry->hdr && entry->hdr->is_hdr_proc_ctx)) { |
| 159 | struct ipa_hdr_proc_ctx_entry *proc_ctx; |
| 160 | |
| 161 | proc_ctx = (entry->proc_ctx) ? : entry->hdr->proc_ctx; |
| 162 | rule_hdr->u.hdr_v2_5.system = !ipa_ctx->hdr_proc_ctx_tbl_lcl; |
| 163 | BUG_ON(proc_ctx->offset_entry->offset & 31); |
| 164 | rule_hdr->u.hdr_v2_5.proc_ctx = 1; |
| 165 | rule_hdr->u.hdr_v2_5.hdr_offset = |
| 166 | (proc_ctx->offset_entry->offset + |
| 167 | ipa_ctx->hdr_proc_ctx_tbl.start_offset) >> 5; |
| 168 | } else if (entry->hdr) { |
| 169 | rule_hdr->u.hdr_v2_5.system = !ipa_ctx->hdr_tbl_lcl; |
| 170 | BUG_ON(entry->hdr->offset_entry->offset & 3); |
| 171 | rule_hdr->u.hdr_v2_5.proc_ctx = 0; |
| 172 | rule_hdr->u.hdr_v2_5.hdr_offset = |
| 173 | entry->hdr->offset_entry->offset >> 2; |
| 174 | } else { |
| 175 | rule_hdr->u.hdr_v2_5.proc_ctx = 0; |
| 176 | rule_hdr->u.hdr_v2_5.hdr_offset = 0; |
| 177 | } |
| 178 | buf += sizeof(struct ipa_rt_rule_hw_hdr); |
| 179 | |
| 180 | if (ipa_generate_hw_rule(ip, &rule->attrib, &buf, &en_rule)) { |
| 181 | IPAERR("fail to generate hw rule\n"); |
| 182 | return -EPERM; |
| 183 | } |
| 184 | |
| 185 | IPADBG("en_rule 0x%x\n", en_rule); |
| 186 | |
| 187 | rule_hdr->u.hdr_v2_5.en_rule = en_rule; |
| 188 | ipa_write_32(rule_hdr->u.word, (u8 *)rule_hdr); |
| 189 | |
| 190 | if (entry->hw_len == 0) { |
| 191 | entry->hw_len = buf - start; |
| 192 | } else if (entry->hw_len != (buf - start)) { |
| 193 | IPAERR("hw_len differs b/w passes passed=0x%x calc=0x%xtd\n", |
| 194 | entry->hw_len, (buf - start)); |
| 195 | return -EPERM; |
| 196 | } |
| 197 | |
| 198 | return 0; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * __ipa_generate_rt_hw_rule_v2_6L() - generates the routing hardware rule |
| 203 | * @ip: the ip address family type |
| 204 | * @entry: routing entry |
| 205 | * @buf: output buffer, buf == NULL means that the caller wants to know the size |
| 206 | * of the rule as seen by HW so they did not pass a valid buffer, we will |
| 207 | * use a scratch buffer instead. |
| 208 | * With this scheme we are going to generate the rule twice, once to know |
| 209 | * size using scratch buffer and second to write the rule to the actual |
| 210 | * caller supplied buffer which is of required size. |
| 211 | * |
| 212 | * Returns: 0 on success, negative on failure |
| 213 | * |
| 214 | * caller needs to hold any needed locks to ensure integrity |
| 215 | * |
| 216 | */ |
| 217 | int __ipa_generate_rt_hw_rule_v2_6L(enum ipa_ip_type ip, |
| 218 | struct ipa_rt_entry *entry, u8 *buf) |
| 219 | { |
| 220 | /* Same implementation as IPAv2 */ |
| 221 | return __ipa_generate_rt_hw_rule_v2(ip, entry, buf); |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * ipa_get_rt_hw_tbl_size() - returns the size of HW routing table |
| 226 | * @ip: the ip address family type |
| 227 | * @hdr_sz: header size |
| 228 | * @max_rt_idx: maximal index |
| 229 | * |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 230 | * Returns: size on success, negative on failure |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 231 | * |
| 232 | * caller needs to hold any needed locks to ensure integrity |
| 233 | * |
| 234 | * the MSB set in rt_idx_bitmap indicates the size of hdr of routing tbl |
| 235 | */ |
| 236 | static int ipa_get_rt_hw_tbl_size(enum ipa_ip_type ip, u32 *hdr_sz, |
| 237 | int *max_rt_idx) |
| 238 | { |
| 239 | struct ipa_rt_tbl_set *set; |
| 240 | struct ipa_rt_tbl *tbl; |
| 241 | struct ipa_rt_entry *entry; |
| 242 | u32 total_sz = 0; |
| 243 | u32 tbl_sz; |
| 244 | u32 bitmap = ipa_ctx->rt_idx_bitmap[ip]; |
| 245 | int highest_bit_set = IPA_RT_TABLE_INDEX_NOT_FOUND; |
| 246 | int i; |
| 247 | int res; |
| 248 | |
| 249 | *hdr_sz = 0; |
| 250 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 251 | |
| 252 | for (i = 0; i < IPA_RT_INDEX_BITMAP_SIZE; i++) { |
| 253 | if (bitmap & IPA_RT_BIT_MASK) |
| 254 | highest_bit_set = i; |
| 255 | bitmap >>= 1; |
| 256 | } |
| 257 | |
| 258 | *max_rt_idx = highest_bit_set; |
| 259 | if (highest_bit_set == IPA_RT_TABLE_INDEX_NOT_FOUND) { |
| 260 | IPAERR("no rt tbls present\n"); |
| 261 | total_sz = IPA_RT_TABLE_WORD_SIZE; |
| 262 | *hdr_sz = IPA_RT_TABLE_WORD_SIZE; |
| 263 | return total_sz; |
| 264 | } |
| 265 | |
| 266 | *hdr_sz = (highest_bit_set + 1) * IPA_RT_TABLE_WORD_SIZE; |
| 267 | total_sz += *hdr_sz; |
| 268 | list_for_each_entry(tbl, &set->head_rt_tbl_list, link) { |
| 269 | tbl_sz = 0; |
| 270 | list_for_each_entry(entry, &tbl->head_rt_rule_list, link) { |
| 271 | res = ipa_ctx->ctrl->ipa_generate_rt_hw_rule( |
| 272 | ip, |
| 273 | entry, |
| 274 | NULL); |
| 275 | if (res) { |
| 276 | IPAERR("failed to find HW RT rule size\n"); |
| 277 | return -EPERM; |
| 278 | } |
| 279 | tbl_sz += entry->hw_len; |
| 280 | } |
| 281 | |
| 282 | if (tbl_sz) |
| 283 | tbl->sz = tbl_sz + IPA_RT_TABLE_WORD_SIZE; |
| 284 | |
| 285 | if (tbl->in_sys) |
| 286 | continue; |
| 287 | |
| 288 | if (tbl_sz) { |
| 289 | /* add the terminator */ |
| 290 | total_sz += (tbl_sz + IPA_RT_TABLE_WORD_SIZE); |
| 291 | /* every rule-set should start at word boundary */ |
| 292 | total_sz = (total_sz + IPA_RT_ENTRY_MEMORY_ALLIGNMENT) & |
| 293 | ~IPA_RT_ENTRY_MEMORY_ALLIGNMENT; |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | IPADBG("RT HW TBL SZ %d HDR SZ %d IP %d\n", total_sz, *hdr_sz, ip); |
| 298 | |
| 299 | return total_sz; |
| 300 | } |
| 301 | |
| 302 | static int ipa_generate_rt_hw_tbl_common(enum ipa_ip_type ip, u8 *base, u8 *hdr, |
| 303 | u32 body_ofst, u32 apps_start_idx) |
| 304 | { |
| 305 | struct ipa_rt_tbl *tbl; |
| 306 | struct ipa_rt_entry *entry; |
| 307 | struct ipa_rt_tbl_set *set; |
| 308 | u32 offset; |
| 309 | u8 *body; |
| 310 | struct ipa_mem_buffer rt_tbl_mem; |
| 311 | u8 *rt_tbl_mem_body; |
| 312 | int res; |
| 313 | |
| 314 | /* build the rt tbl in the DMA buffer to submit to IPA HW */ |
| 315 | body = base; |
| 316 | |
| 317 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 318 | list_for_each_entry(tbl, &set->head_rt_tbl_list, link) { |
| 319 | if (!tbl->in_sys) { |
| 320 | offset = body - base + body_ofst; |
| 321 | if (offset & IPA_RT_ENTRY_MEMORY_ALLIGNMENT) { |
| 322 | IPAERR("offset is not word multiple %d\n", |
| 323 | offset); |
| 324 | goto proc_err; |
| 325 | } |
| 326 | |
| 327 | /* convert offset to words from bytes */ |
| 328 | offset &= ~IPA_RT_ENTRY_MEMORY_ALLIGNMENT; |
| 329 | /* rule is at an offset from base */ |
| 330 | offset |= IPA_RT_BIT_MASK; |
| 331 | |
| 332 | /* update the hdr at the right index */ |
| 333 | ipa_write_32(offset, hdr + |
| 334 | ((tbl->idx - apps_start_idx) * |
| 335 | IPA_RT_TABLE_WORD_SIZE)); |
| 336 | |
| 337 | /* generate the rule-set */ |
| 338 | list_for_each_entry(entry, &tbl->head_rt_rule_list, |
| 339 | link) { |
| 340 | res = ipa_ctx->ctrl->ipa_generate_rt_hw_rule( |
| 341 | ip, |
| 342 | entry, |
| 343 | body); |
| 344 | if (res) { |
| 345 | IPAERR("failed to gen HW RT rule\n"); |
| 346 | goto proc_err; |
| 347 | } |
| 348 | body += entry->hw_len; |
| 349 | } |
| 350 | |
| 351 | /* write the rule-set terminator */ |
| 352 | body = ipa_write_32(0, body); |
| 353 | if ((long)body & IPA_RT_ENTRY_MEMORY_ALLIGNMENT) |
| 354 | /* advance body to next word boundary */ |
| 355 | body = body + (IPA_RT_TABLE_WORD_SIZE - |
| 356 | ((long)body & |
| 357 | IPA_RT_ENTRY_MEMORY_ALLIGNMENT)); |
| 358 | } else { |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 359 | if (tbl->sz == 0) { |
| 360 | IPAERR("cannot generate 0 size table\n"); |
| 361 | goto proc_err; |
| 362 | } |
| 363 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 364 | /* allocate memory for the RT tbl */ |
| 365 | rt_tbl_mem.size = tbl->sz; |
| 366 | rt_tbl_mem.base = |
| 367 | dma_alloc_coherent(ipa_ctx->pdev, rt_tbl_mem.size, |
| 368 | &rt_tbl_mem.phys_base, GFP_KERNEL); |
| 369 | if (!rt_tbl_mem.base) { |
| 370 | IPAERR("fail to alloc DMA buff of size %d\n", |
| 371 | rt_tbl_mem.size); |
| 372 | WARN_ON(1); |
| 373 | goto proc_err; |
| 374 | } |
| 375 | |
| 376 | WARN_ON(rt_tbl_mem.phys_base & |
| 377 | IPA_RT_ENTRY_MEMORY_ALLIGNMENT); |
| 378 | rt_tbl_mem_body = rt_tbl_mem.base; |
| 379 | memset(rt_tbl_mem.base, 0, rt_tbl_mem.size); |
| 380 | /* update the hdr at the right index */ |
| 381 | ipa_write_32(rt_tbl_mem.phys_base, |
| 382 | hdr + ((tbl->idx - apps_start_idx) * |
| 383 | IPA_RT_TABLE_WORD_SIZE)); |
| 384 | /* generate the rule-set */ |
| 385 | list_for_each_entry(entry, &tbl->head_rt_rule_list, |
| 386 | link) { |
| 387 | res = ipa_ctx->ctrl->ipa_generate_rt_hw_rule( |
| 388 | ip, |
| 389 | entry, |
| 390 | rt_tbl_mem_body); |
| 391 | if (res) { |
| 392 | IPAERR("failed to gen HW RT rule\n"); |
| 393 | WARN_ON(1); |
| 394 | goto rt_table_mem_alloc_failed; |
| 395 | } |
| 396 | rt_tbl_mem_body += entry->hw_len; |
| 397 | } |
| 398 | |
| 399 | /* write the rule-set terminator */ |
| 400 | rt_tbl_mem_body = ipa_write_32(0, rt_tbl_mem_body); |
| 401 | |
| 402 | if (tbl->curr_mem.phys_base) { |
| 403 | WARN_ON(tbl->prev_mem.phys_base); |
| 404 | tbl->prev_mem = tbl->curr_mem; |
| 405 | } |
| 406 | tbl->curr_mem = rt_tbl_mem; |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | return 0; |
| 411 | |
| 412 | rt_table_mem_alloc_failed: |
| 413 | dma_free_coherent(ipa_ctx->pdev, rt_tbl_mem.size, |
| 414 | rt_tbl_mem.base, rt_tbl_mem.phys_base); |
| 415 | proc_err: |
| 416 | return -EPERM; |
| 417 | } |
| 418 | |
| 419 | |
| 420 | /** |
| 421 | * ipa_generate_rt_hw_tbl() - generates the routing hardware table |
| 422 | * @ip: [in] the ip address family type |
| 423 | * @mem: [out] buffer to put the filtering table |
| 424 | * |
| 425 | * Returns: 0 on success, negative on failure |
| 426 | */ |
| 427 | static int ipa_generate_rt_hw_tbl_v1_1(enum ipa_ip_type ip, |
| 428 | struct ipa_mem_buffer *mem) |
| 429 | { |
| 430 | u32 hdr_sz; |
| 431 | u8 *hdr; |
| 432 | u8 *body; |
| 433 | u8 *base; |
| 434 | int max_rt_idx; |
| 435 | int i; |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 436 | int res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 437 | |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 438 | res = ipa_get_rt_hw_tbl_size(ip, &hdr_sz, &max_rt_idx); |
| 439 | if (res < 0) { |
| 440 | IPAERR("ipa_get_rt_hw_tbl_size failed %d\n", res); |
| 441 | goto error; |
| 442 | } |
| 443 | |
| 444 | mem->size = res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 445 | mem->size = (mem->size + IPA_RT_TABLE_MEMORY_ALLIGNMENT) & |
| 446 | ~IPA_RT_TABLE_MEMORY_ALLIGNMENT; |
| 447 | |
| 448 | if (mem->size == 0) { |
| 449 | IPAERR("rt tbl empty ip=%d\n", ip); |
| 450 | goto error; |
| 451 | } |
| 452 | mem->base = dma_alloc_coherent(ipa_ctx->pdev, mem->size, |
| 453 | &mem->phys_base, GFP_KERNEL); |
| 454 | if (!mem->base) { |
| 455 | IPAERR("fail to alloc DMA buff of size %d\n", mem->size); |
| 456 | goto error; |
| 457 | } |
| 458 | |
| 459 | memset(mem->base, 0, mem->size); |
| 460 | |
| 461 | /* build the rt tbl in the DMA buffer to submit to IPA HW */ |
| 462 | base = hdr = (u8 *)mem->base; |
| 463 | body = base + hdr_sz; |
| 464 | |
| 465 | /* setup all indices to point to the empty sys rt tbl */ |
| 466 | for (i = 0; i <= max_rt_idx; i++) |
| 467 | ipa_write_32(ipa_ctx->empty_rt_tbl_mem.phys_base, |
| 468 | hdr + (i * IPA_RT_TABLE_WORD_SIZE)); |
| 469 | |
| 470 | if (ipa_generate_rt_hw_tbl_common(ip, base, hdr, 0, 0)) { |
| 471 | IPAERR("fail to generate RT tbl\n"); |
| 472 | goto proc_err; |
| 473 | } |
| 474 | |
| 475 | return 0; |
| 476 | |
| 477 | proc_err: |
| 478 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, mem->phys_base); |
| 479 | mem->base = NULL; |
| 480 | error: |
| 481 | return -EPERM; |
| 482 | } |
| 483 | |
| 484 | static void __ipa_reap_sys_rt_tbls(enum ipa_ip_type ip) |
| 485 | { |
| 486 | struct ipa_rt_tbl *tbl; |
| 487 | struct ipa_rt_tbl *next; |
| 488 | struct ipa_rt_tbl_set *set; |
| 489 | |
| 490 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 491 | list_for_each_entry(tbl, &set->head_rt_tbl_list, link) { |
| 492 | if (tbl->prev_mem.phys_base) { |
| 493 | IPADBG("reaping rt tbl name=%s ip=%d\n", tbl->name, ip); |
| 494 | dma_free_coherent(ipa_ctx->pdev, tbl->prev_mem.size, |
| 495 | tbl->prev_mem.base, |
| 496 | tbl->prev_mem.phys_base); |
| 497 | memset(&tbl->prev_mem, 0, sizeof(tbl->prev_mem)); |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | set = &ipa_ctx->reap_rt_tbl_set[ip]; |
| 502 | list_for_each_entry_safe(tbl, next, &set->head_rt_tbl_list, link) { |
| 503 | list_del(&tbl->link); |
| 504 | WARN_ON(tbl->prev_mem.phys_base != 0); |
| 505 | if (tbl->curr_mem.phys_base) { |
| 506 | IPADBG("reaping sys rt tbl name=%s ip=%d\n", tbl->name, |
| 507 | ip); |
| 508 | dma_free_coherent(ipa_ctx->pdev, tbl->curr_mem.size, |
| 509 | tbl->curr_mem.base, |
| 510 | tbl->curr_mem.phys_base); |
| 511 | kmem_cache_free(ipa_ctx->rt_tbl_cache, tbl); |
| 512 | } |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | int __ipa_commit_rt_v1_1(enum ipa_ip_type ip) |
| 517 | { |
| 518 | struct ipa_desc desc = { 0 }; |
| 519 | struct ipa_mem_buffer *mem; |
| 520 | void *cmd; |
| 521 | struct ipa_ip_v4_routing_init *v4; |
| 522 | struct ipa_ip_v6_routing_init *v6; |
| 523 | u16 avail; |
| 524 | u16 size; |
| 525 | |
| 526 | mem = kmalloc(sizeof(struct ipa_mem_buffer), GFP_KERNEL); |
| 527 | if (!mem) { |
| 528 | IPAERR("failed to alloc memory object\n"); |
| 529 | goto fail_alloc_mem; |
| 530 | } |
| 531 | |
| 532 | if (ip == IPA_IP_v4) { |
| 533 | avail = ipa_ctx->ip4_rt_tbl_lcl ? IPA_MEM_v1_RAM_V4_RT_SIZE : |
| 534 | IPA_MEM_PART(v4_rt_size_ddr); |
| 535 | size = sizeof(struct ipa_ip_v4_routing_init); |
| 536 | } else { |
| 537 | avail = ipa_ctx->ip6_rt_tbl_lcl ? IPA_MEM_v1_RAM_V6_RT_SIZE : |
| 538 | IPA_MEM_PART(v6_rt_size_ddr); |
| 539 | size = sizeof(struct ipa_ip_v6_routing_init); |
| 540 | } |
| 541 | cmd = kmalloc(size, GFP_KERNEL); |
| 542 | if (!cmd) { |
| 543 | IPAERR("failed to alloc immediate command object\n"); |
| 544 | goto fail_alloc_cmd; |
| 545 | } |
| 546 | |
| 547 | if (ipa_generate_rt_hw_tbl_v1_1(ip, mem)) { |
| 548 | IPAERR("fail to generate RT HW TBL ip %d\n", ip); |
| 549 | goto fail_hw_tbl_gen; |
| 550 | } |
| 551 | |
| 552 | if (mem->size > avail) { |
| 553 | IPAERR("tbl too big, needed %d avail %d\n", mem->size, avail); |
| 554 | goto fail_send_cmd; |
| 555 | } |
| 556 | |
| 557 | if (ip == IPA_IP_v4) { |
| 558 | v4 = (struct ipa_ip_v4_routing_init *)cmd; |
| 559 | desc.opcode = IPA_IP_V4_ROUTING_INIT; |
| 560 | v4->ipv4_rules_addr = mem->phys_base; |
| 561 | v4->size_ipv4_rules = mem->size; |
| 562 | v4->ipv4_addr = IPA_MEM_v1_RAM_V4_RT_OFST; |
| 563 | IPADBG("putting Routing IPv4 rules to phys 0x%x", |
| 564 | v4->ipv4_addr); |
| 565 | } else { |
| 566 | v6 = (struct ipa_ip_v6_routing_init *)cmd; |
| 567 | desc.opcode = IPA_IP_V6_ROUTING_INIT; |
| 568 | v6->ipv6_rules_addr = mem->phys_base; |
| 569 | v6->size_ipv6_rules = mem->size; |
| 570 | v6->ipv6_addr = IPA_MEM_v1_RAM_V6_RT_OFST; |
| 571 | IPADBG("putting Routing IPv6 rules to phys 0x%x", |
| 572 | v6->ipv6_addr); |
| 573 | } |
| 574 | |
| 575 | desc.pyld = cmd; |
| 576 | desc.len = size; |
| 577 | desc.type = IPA_IMM_CMD_DESC; |
| 578 | IPA_DUMP_BUFF(mem->base, mem->phys_base, mem->size); |
| 579 | |
| 580 | if (ipa_send_cmd(1, &desc)) { |
| 581 | IPAERR("fail to send immediate command\n"); |
| 582 | goto fail_send_cmd; |
| 583 | } |
| 584 | |
| 585 | __ipa_reap_sys_rt_tbls(ip); |
| 586 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, mem->phys_base); |
| 587 | kfree(cmd); |
| 588 | kfree(mem); |
| 589 | |
| 590 | return 0; |
| 591 | |
| 592 | fail_send_cmd: |
| 593 | if (mem->base) |
| 594 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, |
| 595 | mem->phys_base); |
| 596 | fail_hw_tbl_gen: |
| 597 | kfree(cmd); |
| 598 | fail_alloc_cmd: |
| 599 | kfree(mem); |
| 600 | fail_alloc_mem: |
| 601 | return -EPERM; |
| 602 | } |
| 603 | |
| 604 | static int ipa_generate_rt_hw_tbl_v2(enum ipa_ip_type ip, |
| 605 | struct ipa_mem_buffer *mem, struct ipa_mem_buffer *head) |
| 606 | { |
| 607 | u32 hdr_sz; |
| 608 | u8 *hdr; |
| 609 | u8 *body; |
| 610 | u8 *base; |
| 611 | int max_rt_idx; |
| 612 | int i; |
| 613 | u32 *entr; |
| 614 | int num_index; |
| 615 | u32 body_start_offset; |
| 616 | u32 apps_start_idx; |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 617 | int res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 618 | |
| 619 | if (ip == IPA_IP_v4) { |
| 620 | num_index = IPA_MEM_PART(v4_apps_rt_index_hi) - |
| 621 | IPA_MEM_PART(v4_apps_rt_index_lo) + 1; |
| 622 | body_start_offset = IPA_MEM_PART(apps_v4_rt_ofst) - |
| 623 | IPA_MEM_PART(v4_rt_ofst); |
| 624 | apps_start_idx = IPA_MEM_PART(v4_apps_rt_index_lo); |
| 625 | } else { |
| 626 | num_index = IPA_MEM_PART(v6_apps_rt_index_hi) - |
| 627 | IPA_MEM_PART(v6_apps_rt_index_lo) + 1; |
| 628 | body_start_offset = IPA_MEM_PART(apps_v6_rt_ofst) - |
| 629 | IPA_MEM_PART(v6_rt_ofst); |
| 630 | apps_start_idx = IPA_MEM_PART(v6_apps_rt_index_lo); |
| 631 | } |
| 632 | |
| 633 | head->size = num_index * 4; |
| 634 | head->base = dma_alloc_coherent(ipa_ctx->pdev, head->size, |
| 635 | &head->phys_base, GFP_KERNEL); |
| 636 | if (!head->base) { |
| 637 | IPAERR("fail to alloc DMA buff of size %d\n", head->size); |
| 638 | goto err; |
| 639 | } |
| 640 | entr = (u32 *)head->base; |
| 641 | hdr = (u8 *)head->base; |
| 642 | for (i = 1; i <= num_index; i++) { |
| 643 | *entr = ipa_ctx->empty_rt_tbl_mem.phys_base; |
| 644 | entr++; |
| 645 | } |
| 646 | |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 647 | res = ipa_get_rt_hw_tbl_size(ip, &hdr_sz, &max_rt_idx); |
| 648 | if (res < 0) { |
| 649 | IPAERR("ipa_get_rt_hw_tbl_size failed %d\n", res); |
| 650 | goto base_err; |
| 651 | } |
| 652 | |
| 653 | mem->size = res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 654 | mem->size -= hdr_sz; |
| 655 | mem->size = (mem->size + IPA_RT_TABLE_MEMORY_ALLIGNMENT) & |
| 656 | ~IPA_RT_TABLE_MEMORY_ALLIGNMENT; |
| 657 | |
| 658 | if (mem->size > 0) { |
| 659 | mem->base = dma_alloc_coherent(ipa_ctx->pdev, mem->size, |
| 660 | &mem->phys_base, GFP_KERNEL); |
| 661 | if (!mem->base) { |
| 662 | IPAERR("fail to alloc DMA buff of size %d\n", |
| 663 | mem->size); |
| 664 | goto base_err; |
| 665 | } |
| 666 | memset(mem->base, 0, mem->size); |
| 667 | } |
| 668 | |
| 669 | /* build the rt tbl in the DMA buffer to submit to IPA HW */ |
| 670 | body = base = (u8 *)mem->base; |
| 671 | |
| 672 | if (ipa_generate_rt_hw_tbl_common(ip, base, hdr, body_start_offset, |
| 673 | apps_start_idx)) { |
| 674 | IPAERR("fail to generate RT tbl\n"); |
| 675 | goto proc_err; |
| 676 | } |
| 677 | |
| 678 | return 0; |
| 679 | |
| 680 | proc_err: |
| 681 | if (mem->size) |
| 682 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, |
| 683 | mem->phys_base); |
| 684 | base_err: |
| 685 | dma_free_coherent(ipa_ctx->pdev, head->size, head->base, |
| 686 | head->phys_base); |
| 687 | err: |
| 688 | return -EPERM; |
| 689 | } |
| 690 | |
| 691 | int __ipa_commit_rt_v2(enum ipa_ip_type ip) |
| 692 | { |
| 693 | struct ipa_desc desc[2]; |
| 694 | struct ipa_mem_buffer body; |
| 695 | struct ipa_mem_buffer head; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 696 | struct ipa_hw_imm_cmd_dma_shared_mem *cmd1 = NULL; |
| 697 | struct ipa_hw_imm_cmd_dma_shared_mem *cmd2 = NULL; |
Utkarsh Saxena | e651010 | 2017-04-14 19:31:07 +0530 | [diff] [blame^] | 698 | 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] | 699 | u16 avail; |
| 700 | u32 num_modem_rt_index; |
| 701 | int rc = 0; |
| 702 | u32 local_addr1; |
| 703 | u32 local_addr2; |
| 704 | bool lcl; |
| 705 | |
| 706 | memset(desc, 0, 2 * sizeof(struct ipa_desc)); |
| 707 | |
| 708 | if (ip == IPA_IP_v4) { |
| 709 | avail = ipa_ctx->ip4_rt_tbl_lcl ? |
| 710 | IPA_MEM_PART(apps_v4_rt_size) : |
| 711 | IPA_MEM_PART(v4_rt_size_ddr); |
| 712 | num_modem_rt_index = |
| 713 | IPA_MEM_PART(v4_modem_rt_index_hi) - |
| 714 | IPA_MEM_PART(v4_modem_rt_index_lo) + 1; |
| 715 | local_addr1 = ipa_ctx->smem_restricted_bytes + |
| 716 | IPA_MEM_PART(v4_rt_ofst) + |
| 717 | num_modem_rt_index * 4; |
| 718 | local_addr2 = ipa_ctx->smem_restricted_bytes + |
| 719 | IPA_MEM_PART(apps_v4_rt_ofst); |
| 720 | lcl = ipa_ctx->ip4_rt_tbl_lcl; |
| 721 | } else { |
| 722 | avail = ipa_ctx->ip6_rt_tbl_lcl ? |
| 723 | IPA_MEM_PART(apps_v6_rt_size) : |
| 724 | IPA_MEM_PART(v6_rt_size_ddr); |
| 725 | num_modem_rt_index = |
| 726 | IPA_MEM_PART(v6_modem_rt_index_hi) - |
| 727 | IPA_MEM_PART(v6_modem_rt_index_lo) + 1; |
| 728 | local_addr1 = ipa_ctx->smem_restricted_bytes + |
| 729 | IPA_MEM_PART(v6_rt_ofst) + |
| 730 | num_modem_rt_index * 4; |
| 731 | local_addr2 = ipa_ctx->smem_restricted_bytes + |
| 732 | IPA_MEM_PART(apps_v6_rt_ofst); |
| 733 | lcl = ipa_ctx->ip6_rt_tbl_lcl; |
| 734 | } |
| 735 | |
| 736 | if (ipa_generate_rt_hw_tbl_v2(ip, &body, &head)) { |
| 737 | IPAERR("fail to generate RT HW TBL ip %d\n", ip); |
| 738 | rc = -EFAULT; |
| 739 | goto fail_gen; |
| 740 | } |
| 741 | |
| 742 | if (body.size > avail) { |
| 743 | IPAERR("tbl too big, needed %d avail %d\n", body.size, avail); |
| 744 | rc = -EFAULT; |
| 745 | goto fail_send_cmd; |
| 746 | } |
| 747 | |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 748 | cmd1 = kzalloc(sizeof(struct ipa_hw_imm_cmd_dma_shared_mem), |
Utkarsh Saxena | e651010 | 2017-04-14 19:31:07 +0530 | [diff] [blame^] | 749 | flag); |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 750 | if (cmd1 == NULL) { |
| 751 | IPAERR("Failed to alloc immediate command object\n"); |
| 752 | rc = -ENOMEM; |
| 753 | goto fail_send_cmd; |
| 754 | } |
| 755 | |
| 756 | cmd1->size = head.size; |
| 757 | cmd1->system_addr = head.phys_base; |
| 758 | cmd1->local_addr = local_addr1; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 759 | desc[0].opcode = IPA_DMA_SHARED_MEM; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 760 | desc[0].pyld = (void *)cmd1; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 761 | desc[0].len = sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| 762 | desc[0].type = IPA_IMM_CMD_DESC; |
| 763 | |
| 764 | if (lcl) { |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 765 | cmd2 = kzalloc(sizeof(struct ipa_hw_imm_cmd_dma_shared_mem), |
Utkarsh Saxena | e651010 | 2017-04-14 19:31:07 +0530 | [diff] [blame^] | 766 | flag); |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 767 | if (cmd2 == NULL) { |
| 768 | IPAERR("Failed to alloc immediate command object\n"); |
| 769 | rc = -ENOMEM; |
| 770 | goto fail_send_cmd1; |
| 771 | } |
| 772 | |
| 773 | cmd2->size = body.size; |
| 774 | cmd2->system_addr = body.phys_base; |
| 775 | cmd2->local_addr = local_addr2; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 776 | |
| 777 | desc[1].opcode = IPA_DMA_SHARED_MEM; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 778 | desc[1].pyld = (void *)cmd2; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 779 | desc[1].len = sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| 780 | desc[1].type = IPA_IMM_CMD_DESC; |
| 781 | |
| 782 | if (ipa_send_cmd(2, desc)) { |
| 783 | IPAERR("fail to send immediate command\n"); |
| 784 | rc = -EFAULT; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 785 | goto fail_send_cmd2; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 786 | } |
| 787 | } else { |
| 788 | if (ipa_send_cmd(1, desc)) { |
| 789 | IPAERR("fail to send immediate command\n"); |
| 790 | rc = -EFAULT; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 791 | goto fail_send_cmd1; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 792 | } |
| 793 | } |
| 794 | |
| 795 | IPADBG("HEAD\n"); |
| 796 | IPA_DUMP_BUFF(head.base, head.phys_base, head.size); |
| 797 | if (body.size) { |
| 798 | IPADBG("BODY\n"); |
| 799 | IPA_DUMP_BUFF(body.base, body.phys_base, body.size); |
| 800 | } |
| 801 | __ipa_reap_sys_rt_tbls(ip); |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 802 | |
| 803 | fail_send_cmd2: |
| 804 | kfree(cmd2); |
| 805 | fail_send_cmd1: |
| 806 | kfree(cmd1); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 807 | fail_send_cmd: |
| 808 | dma_free_coherent(ipa_ctx->pdev, head.size, head.base, head.phys_base); |
| 809 | if (body.size) |
| 810 | dma_free_coherent(ipa_ctx->pdev, body.size, body.base, |
| 811 | body.phys_base); |
| 812 | fail_gen: |
| 813 | return rc; |
| 814 | } |
| 815 | |
| 816 | /** |
| 817 | * __ipa_find_rt_tbl() - find the routing table |
| 818 | * which name is given as parameter |
| 819 | * @ip: [in] the ip address family type of the wanted routing table |
| 820 | * @name: [in] the name of the wanted routing table |
| 821 | * |
| 822 | * Returns: the routing table which name is given as parameter, or NULL if it |
| 823 | * doesn't exist |
| 824 | */ |
| 825 | struct ipa_rt_tbl *__ipa_find_rt_tbl(enum ipa_ip_type ip, const char *name) |
| 826 | { |
| 827 | struct ipa_rt_tbl *entry; |
| 828 | struct ipa_rt_tbl_set *set; |
| 829 | |
| 830 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 831 | list_for_each_entry(entry, &set->head_rt_tbl_list, link) { |
| 832 | if (!strcmp(name, entry->name)) |
| 833 | return entry; |
| 834 | } |
| 835 | |
| 836 | return NULL; |
| 837 | } |
| 838 | |
| 839 | /** |
| 840 | * ipa2_query_rt_index() - find the routing table index |
| 841 | * which name and ip type are given as parameters |
| 842 | * @in: [out] the index of the wanted routing table |
| 843 | * |
| 844 | * Returns: the routing table which name is given as parameter, or NULL if it |
| 845 | * doesn't exist |
| 846 | */ |
| 847 | int ipa2_query_rt_index(struct ipa_ioc_get_rt_tbl_indx *in) |
| 848 | { |
| 849 | struct ipa_rt_tbl *entry; |
| 850 | |
| 851 | if (in->ip >= IPA_IP_MAX) { |
| 852 | IPAERR("bad parm\n"); |
| 853 | return -EINVAL; |
| 854 | } |
| 855 | |
| 856 | /* check if this table exists */ |
| 857 | entry = __ipa_find_rt_tbl(in->ip, in->name); |
| 858 | if (!entry) |
| 859 | return -EFAULT; |
| 860 | |
| 861 | in->idx = entry->idx; |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | static struct ipa_rt_tbl *__ipa_add_rt_tbl(enum ipa_ip_type ip, |
| 866 | const char *name) |
| 867 | { |
| 868 | struct ipa_rt_tbl *entry; |
| 869 | struct ipa_rt_tbl_set *set; |
| 870 | int i; |
| 871 | int id; |
| 872 | |
| 873 | if (ip >= IPA_IP_MAX || name == NULL) { |
| 874 | IPAERR("bad parm\n"); |
| 875 | goto error; |
| 876 | } |
| 877 | |
| 878 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 879 | /* check if this table exists */ |
| 880 | entry = __ipa_find_rt_tbl(ip, name); |
| 881 | if (!entry) { |
| 882 | entry = kmem_cache_zalloc(ipa_ctx->rt_tbl_cache, GFP_KERNEL); |
| 883 | if (!entry) { |
| 884 | IPAERR("failed to alloc RT tbl object\n"); |
| 885 | goto error; |
| 886 | } |
| 887 | /* find a routing tbl index */ |
| 888 | for (i = 0; i < IPA_RT_INDEX_BITMAP_SIZE; i++) { |
| 889 | if (!test_bit(i, &ipa_ctx->rt_idx_bitmap[ip])) { |
| 890 | entry->idx = i; |
| 891 | set_bit(i, &ipa_ctx->rt_idx_bitmap[ip]); |
| 892 | break; |
| 893 | } |
| 894 | } |
| 895 | if (i == IPA_RT_INDEX_BITMAP_SIZE) { |
| 896 | IPAERR("not free RT tbl indices left\n"); |
| 897 | goto fail_rt_idx_alloc; |
| 898 | } |
| 899 | |
| 900 | INIT_LIST_HEAD(&entry->head_rt_rule_list); |
| 901 | INIT_LIST_HEAD(&entry->link); |
| 902 | strlcpy(entry->name, name, IPA_RESOURCE_NAME_MAX); |
| 903 | entry->set = set; |
| 904 | entry->cookie = IPA_COOKIE; |
| 905 | entry->in_sys = (ip == IPA_IP_v4) ? |
| 906 | !ipa_ctx->ip4_rt_tbl_lcl : !ipa_ctx->ip6_rt_tbl_lcl; |
| 907 | set->tbl_cnt++; |
| 908 | list_add(&entry->link, &set->head_rt_tbl_list); |
| 909 | |
| 910 | IPADBG("add rt tbl idx=%d tbl_cnt=%d ip=%d\n", entry->idx, |
| 911 | set->tbl_cnt, ip); |
| 912 | |
| 913 | id = ipa_id_alloc(entry); |
| 914 | if (id < 0) { |
| 915 | IPAERR("failed to add to tree\n"); |
| 916 | WARN_ON(1); |
| 917 | } |
| 918 | entry->id = id; |
| 919 | } |
| 920 | |
| 921 | return entry; |
| 922 | |
| 923 | fail_rt_idx_alloc: |
| 924 | entry->cookie = 0; |
| 925 | kmem_cache_free(ipa_ctx->rt_tbl_cache, entry); |
| 926 | error: |
| 927 | return NULL; |
| 928 | } |
| 929 | |
| 930 | static int __ipa_del_rt_tbl(struct ipa_rt_tbl *entry) |
| 931 | { |
| 932 | enum ipa_ip_type ip = IPA_IP_MAX; |
| 933 | u32 id; |
| 934 | |
| 935 | if (entry == NULL || (entry->cookie != IPA_COOKIE)) { |
| 936 | IPAERR("bad parms\n"); |
| 937 | return -EINVAL; |
| 938 | } |
| 939 | id = entry->id; |
| 940 | if (ipa_id_find(id) == NULL) { |
| 941 | IPAERR("lookup failed\n"); |
| 942 | return -EPERM; |
| 943 | } |
| 944 | |
| 945 | if (entry->set == &ipa_ctx->rt_tbl_set[IPA_IP_v4]) |
| 946 | ip = IPA_IP_v4; |
| 947 | else if (entry->set == &ipa_ctx->rt_tbl_set[IPA_IP_v6]) |
| 948 | ip = IPA_IP_v6; |
| 949 | else |
| 950 | WARN_ON(1); |
| 951 | |
| 952 | if (!entry->in_sys) { |
| 953 | list_del(&entry->link); |
| 954 | clear_bit(entry->idx, &ipa_ctx->rt_idx_bitmap[ip]); |
| 955 | entry->set->tbl_cnt--; |
| 956 | IPADBG("del rt tbl_idx=%d tbl_cnt=%d\n", entry->idx, |
| 957 | entry->set->tbl_cnt); |
| 958 | kmem_cache_free(ipa_ctx->rt_tbl_cache, entry); |
| 959 | } else { |
| 960 | list_move(&entry->link, |
| 961 | &ipa_ctx->reap_rt_tbl_set[ip].head_rt_tbl_list); |
| 962 | clear_bit(entry->idx, &ipa_ctx->rt_idx_bitmap[ip]); |
| 963 | entry->set->tbl_cnt--; |
| 964 | IPADBG("del sys rt tbl_idx=%d tbl_cnt=%d\n", entry->idx, |
| 965 | entry->set->tbl_cnt); |
| 966 | } |
| 967 | |
| 968 | /* remove the handle from the database */ |
| 969 | ipa_id_remove(id); |
| 970 | return 0; |
| 971 | } |
| 972 | |
| 973 | static int __ipa_add_rt_rule(enum ipa_ip_type ip, const char *name, |
| 974 | const struct ipa_rt_rule *rule, u8 at_rear, u32 *rule_hdl) |
| 975 | { |
| 976 | struct ipa_rt_tbl *tbl; |
| 977 | struct ipa_rt_entry *entry; |
| 978 | struct ipa_hdr_entry *hdr = NULL; |
| 979 | struct ipa_hdr_proc_ctx_entry *proc_ctx = NULL; |
| 980 | int id; |
| 981 | |
| 982 | if (rule->hdr_hdl && rule->hdr_proc_ctx_hdl) { |
| 983 | IPAERR("rule contains both hdr_hdl and hdr_proc_ctx_hdl\n"); |
| 984 | goto error; |
| 985 | } |
| 986 | |
| 987 | if (rule->hdr_hdl) { |
| 988 | hdr = ipa_id_find(rule->hdr_hdl); |
| 989 | if ((hdr == NULL) || (hdr->cookie != IPA_COOKIE)) { |
| 990 | IPAERR("rt rule does not point to valid hdr\n"); |
| 991 | goto error; |
| 992 | } |
| 993 | } else if (rule->hdr_proc_ctx_hdl) { |
| 994 | proc_ctx = ipa_id_find(rule->hdr_proc_ctx_hdl); |
| 995 | if ((proc_ctx == NULL) || (proc_ctx->cookie != IPA_COOKIE)) { |
| 996 | IPAERR("rt rule does not point to valid proc ctx\n"); |
| 997 | goto error; |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | |
| 1002 | tbl = __ipa_add_rt_tbl(ip, name); |
| 1003 | if (tbl == NULL || (tbl->cookie != IPA_COOKIE)) { |
| 1004 | IPAERR("bad params\n"); |
| 1005 | goto error; |
| 1006 | } |
| 1007 | /* |
| 1008 | * do not allow any rules to be added at end of the "default" routing |
| 1009 | * tables |
| 1010 | */ |
| 1011 | if (!strcmp(tbl->name, IPA_DFLT_RT_TBL_NAME) && |
| 1012 | (tbl->rule_cnt > 0) && (at_rear != 0)) { |
| 1013 | IPAERR("cannot add rule at end of tbl rule_cnt=%d at_rear=%d\n", |
| 1014 | tbl->rule_cnt, at_rear); |
| 1015 | goto error; |
| 1016 | } |
| 1017 | |
| 1018 | entry = kmem_cache_zalloc(ipa_ctx->rt_rule_cache, GFP_KERNEL); |
| 1019 | if (!entry) { |
| 1020 | IPAERR("failed to alloc RT rule object\n"); |
| 1021 | goto error; |
| 1022 | } |
| 1023 | INIT_LIST_HEAD(&entry->link); |
| 1024 | entry->cookie = IPA_COOKIE; |
| 1025 | entry->rule = *rule; |
| 1026 | entry->tbl = tbl; |
| 1027 | entry->hdr = hdr; |
| 1028 | entry->proc_ctx = proc_ctx; |
| 1029 | if (at_rear) |
| 1030 | list_add_tail(&entry->link, &tbl->head_rt_rule_list); |
| 1031 | else |
| 1032 | list_add(&entry->link, &tbl->head_rt_rule_list); |
| 1033 | tbl->rule_cnt++; |
| 1034 | if (entry->hdr) |
| 1035 | entry->hdr->ref_cnt++; |
| 1036 | else if (entry->proc_ctx) |
| 1037 | entry->proc_ctx->ref_cnt++; |
| 1038 | id = ipa_id_alloc(entry); |
| 1039 | if (id < 0) { |
| 1040 | IPAERR("failed to add to tree\n"); |
| 1041 | WARN_ON(1); |
| 1042 | goto ipa_insert_failed; |
| 1043 | } |
| 1044 | IPADBG("add rt rule tbl_idx=%d rule_cnt=%d\n", tbl->idx, tbl->rule_cnt); |
| 1045 | *rule_hdl = id; |
| 1046 | entry->id = id; |
| 1047 | |
| 1048 | return 0; |
| 1049 | |
| 1050 | ipa_insert_failed: |
| 1051 | if (entry->hdr) |
| 1052 | entry->hdr->ref_cnt--; |
| 1053 | else if (entry->proc_ctx) |
| 1054 | entry->proc_ctx->ref_cnt--; |
| 1055 | list_del(&entry->link); |
| 1056 | kmem_cache_free(ipa_ctx->rt_rule_cache, entry); |
| 1057 | error: |
| 1058 | return -EPERM; |
| 1059 | } |
| 1060 | |
| 1061 | /** |
| 1062 | * ipa2_add_rt_rule() - Add the specified routing rules to SW and optionally |
| 1063 | * commit to IPA HW |
| 1064 | * @rules: [inout] set of routing rules to add |
| 1065 | * |
| 1066 | * Returns: 0 on success, negative on failure |
| 1067 | * |
| 1068 | * Note: Should not be called from atomic context |
| 1069 | */ |
| 1070 | int ipa2_add_rt_rule(struct ipa_ioc_add_rt_rule *rules) |
| 1071 | { |
| 1072 | int i; |
| 1073 | int ret; |
| 1074 | |
| 1075 | if (rules == NULL || rules->num_rules == 0 || rules->ip >= IPA_IP_MAX) { |
| 1076 | IPAERR("bad parm\n"); |
| 1077 | return -EINVAL; |
| 1078 | } |
| 1079 | |
| 1080 | mutex_lock(&ipa_ctx->lock); |
| 1081 | for (i = 0; i < rules->num_rules; i++) { |
| 1082 | if (__ipa_add_rt_rule(rules->ip, rules->rt_tbl_name, |
| 1083 | &rules->rules[i].rule, |
| 1084 | rules->rules[i].at_rear, |
| 1085 | &rules->rules[i].rt_rule_hdl)) { |
| 1086 | IPAERR("failed to add rt rule %d\n", i); |
| 1087 | rules->rules[i].status = IPA_RT_STATUS_OF_ADD_FAILED; |
| 1088 | } else { |
| 1089 | rules->rules[i].status = 0; |
| 1090 | } |
| 1091 | } |
| 1092 | |
| 1093 | if (rules->commit) |
| 1094 | if (ipa_ctx->ctrl->ipa_commit_rt(rules->ip)) { |
| 1095 | ret = -EPERM; |
| 1096 | goto bail; |
| 1097 | } |
| 1098 | |
| 1099 | ret = 0; |
| 1100 | bail: |
| 1101 | mutex_unlock(&ipa_ctx->lock); |
| 1102 | return ret; |
| 1103 | } |
| 1104 | |
| 1105 | int __ipa_del_rt_rule(u32 rule_hdl) |
| 1106 | { |
| 1107 | struct ipa_rt_entry *entry; |
| 1108 | int id; |
| 1109 | |
| 1110 | entry = ipa_id_find(rule_hdl); |
| 1111 | |
| 1112 | if (entry == NULL) { |
| 1113 | IPAERR("lookup failed\n"); |
| 1114 | return -EINVAL; |
| 1115 | } |
| 1116 | |
| 1117 | if (entry->cookie != IPA_COOKIE) { |
| 1118 | IPAERR("bad params\n"); |
| 1119 | return -EINVAL; |
| 1120 | } |
| 1121 | |
| 1122 | if (entry->hdr) |
| 1123 | __ipa_release_hdr(entry->hdr->id); |
| 1124 | else if (entry->proc_ctx) |
| 1125 | __ipa_release_hdr_proc_ctx(entry->proc_ctx->id); |
| 1126 | list_del(&entry->link); |
| 1127 | entry->tbl->rule_cnt--; |
| 1128 | IPADBG("del rt rule tbl_idx=%d rule_cnt=%d\n", entry->tbl->idx, |
| 1129 | entry->tbl->rule_cnt); |
| 1130 | if (entry->tbl->rule_cnt == 0 && entry->tbl->ref_cnt == 0) { |
| 1131 | if (__ipa_del_rt_tbl(entry->tbl)) |
| 1132 | IPAERR("fail to del RT tbl\n"); |
| 1133 | } |
| 1134 | entry->cookie = 0; |
| 1135 | id = entry->id; |
| 1136 | kmem_cache_free(ipa_ctx->rt_rule_cache, entry); |
| 1137 | |
| 1138 | /* remove the handle from the database */ |
| 1139 | ipa_id_remove(id); |
| 1140 | |
| 1141 | return 0; |
| 1142 | } |
| 1143 | |
| 1144 | /** |
| 1145 | * ipa2_del_rt_rule() - Remove the specified routing rules to SW and optionally |
| 1146 | * commit to IPA HW |
| 1147 | * @hdls: [inout] set of routing rules to delete |
| 1148 | * |
| 1149 | * Returns: 0 on success, negative on failure |
| 1150 | * |
| 1151 | * Note: Should not be called from atomic context |
| 1152 | */ |
| 1153 | int ipa2_del_rt_rule(struct ipa_ioc_del_rt_rule *hdls) |
| 1154 | { |
| 1155 | int i; |
| 1156 | int ret; |
| 1157 | |
| 1158 | if (hdls == NULL || hdls->num_hdls == 0 || hdls->ip >= IPA_IP_MAX) { |
| 1159 | IPAERR("bad parm\n"); |
| 1160 | return -EINVAL; |
| 1161 | } |
| 1162 | |
| 1163 | mutex_lock(&ipa_ctx->lock); |
| 1164 | for (i = 0; i < hdls->num_hdls; i++) { |
| 1165 | if (__ipa_del_rt_rule(hdls->hdl[i].hdl)) { |
| 1166 | IPAERR("failed to del rt rule %i\n", i); |
| 1167 | hdls->hdl[i].status = IPA_RT_STATUS_OF_DEL_FAILED; |
| 1168 | } else { |
| 1169 | hdls->hdl[i].status = 0; |
| 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | if (hdls->commit) |
| 1174 | if (ipa_ctx->ctrl->ipa_commit_rt(hdls->ip)) { |
| 1175 | ret = -EPERM; |
| 1176 | goto bail; |
| 1177 | } |
| 1178 | |
| 1179 | ret = 0; |
| 1180 | bail: |
| 1181 | mutex_unlock(&ipa_ctx->lock); |
| 1182 | return ret; |
| 1183 | } |
| 1184 | |
| 1185 | /** |
| 1186 | * ipa2_commit_rt_rule() - Commit the current SW routing table of specified type |
| 1187 | * to IPA HW |
| 1188 | * @ip: The family of routing tables |
| 1189 | * |
| 1190 | * Returns: 0 on success, negative on failure |
| 1191 | * |
| 1192 | * Note: Should not be called from atomic context |
| 1193 | */ |
| 1194 | int ipa2_commit_rt(enum ipa_ip_type ip) |
| 1195 | { |
| 1196 | int ret; |
| 1197 | |
| 1198 | if (ip >= IPA_IP_MAX) { |
| 1199 | IPAERR("bad parm\n"); |
| 1200 | return -EINVAL; |
| 1201 | } |
| 1202 | |
| 1203 | /* |
| 1204 | * issue a commit on the filtering module of same IP type since |
| 1205 | * filtering rules point to routing tables |
| 1206 | */ |
| 1207 | if (ipa2_commit_flt(ip)) |
| 1208 | return -EPERM; |
| 1209 | |
| 1210 | mutex_lock(&ipa_ctx->lock); |
| 1211 | if (ipa_ctx->ctrl->ipa_commit_rt(ip)) { |
| 1212 | ret = -EPERM; |
| 1213 | goto bail; |
| 1214 | } |
| 1215 | |
| 1216 | ret = 0; |
| 1217 | bail: |
| 1218 | mutex_unlock(&ipa_ctx->lock); |
| 1219 | return ret; |
| 1220 | } |
| 1221 | |
| 1222 | /** |
| 1223 | * ipa2_reset_rt() - reset the current SW routing table of specified type |
| 1224 | * (does not commit to HW) |
| 1225 | * @ip: The family of routing tables |
| 1226 | * |
| 1227 | * Returns: 0 on success, negative on failure |
| 1228 | * |
| 1229 | * Note: Should not be called from atomic context |
| 1230 | */ |
| 1231 | int ipa2_reset_rt(enum ipa_ip_type ip) |
| 1232 | { |
| 1233 | struct ipa_rt_tbl *tbl; |
| 1234 | struct ipa_rt_tbl *tbl_next; |
| 1235 | struct ipa_rt_tbl_set *set; |
| 1236 | struct ipa_rt_entry *rule; |
| 1237 | struct ipa_rt_entry *rule_next; |
| 1238 | struct ipa_rt_tbl_set *rset; |
| 1239 | u32 apps_start_idx; |
| 1240 | int id; |
| 1241 | |
| 1242 | if (ip >= IPA_IP_MAX) { |
| 1243 | IPAERR("bad parm\n"); |
| 1244 | return -EINVAL; |
| 1245 | } |
| 1246 | |
| 1247 | if (ipa_ctx->ipa_hw_type >= IPA_HW_v2_0) { |
| 1248 | if (ip == IPA_IP_v4) |
| 1249 | apps_start_idx = IPA_MEM_PART(v4_apps_rt_index_lo); |
| 1250 | else |
| 1251 | apps_start_idx = IPA_MEM_PART(v6_apps_rt_index_lo); |
| 1252 | } else { |
| 1253 | apps_start_idx = 0; |
| 1254 | } |
| 1255 | |
| 1256 | /* |
| 1257 | * issue a reset on the filtering module of same IP type since |
| 1258 | * filtering rules point to routing tables |
| 1259 | */ |
| 1260 | if (ipa2_reset_flt(ip)) |
| 1261 | IPAERR("fail to reset flt ip=%d\n", ip); |
| 1262 | |
| 1263 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 1264 | rset = &ipa_ctx->reap_rt_tbl_set[ip]; |
| 1265 | mutex_lock(&ipa_ctx->lock); |
| 1266 | IPADBG("reset rt ip=%d\n", ip); |
| 1267 | list_for_each_entry_safe(tbl, tbl_next, &set->head_rt_tbl_list, link) { |
| 1268 | list_for_each_entry_safe(rule, rule_next, |
| 1269 | &tbl->head_rt_rule_list, link) { |
| 1270 | if (ipa_id_find(rule->id) == NULL) { |
| 1271 | WARN_ON(1); |
| 1272 | mutex_unlock(&ipa_ctx->lock); |
| 1273 | return -EFAULT; |
| 1274 | } |
| 1275 | |
| 1276 | /* |
| 1277 | * for the "default" routing tbl, remove all but the |
| 1278 | * last rule |
| 1279 | */ |
| 1280 | if (tbl->idx == apps_start_idx && tbl->rule_cnt == 1) |
| 1281 | continue; |
| 1282 | |
| 1283 | list_del(&rule->link); |
| 1284 | tbl->rule_cnt--; |
| 1285 | if (rule->hdr) |
| 1286 | __ipa_release_hdr(rule->hdr->id); |
| 1287 | else if (rule->proc_ctx) |
| 1288 | __ipa_release_hdr_proc_ctx(rule->proc_ctx->id); |
| 1289 | rule->cookie = 0; |
| 1290 | id = rule->id; |
| 1291 | kmem_cache_free(ipa_ctx->rt_rule_cache, rule); |
| 1292 | |
| 1293 | /* remove the handle from the database */ |
| 1294 | ipa_id_remove(id); |
| 1295 | } |
| 1296 | |
| 1297 | if (ipa_id_find(tbl->id) == NULL) { |
| 1298 | WARN_ON(1); |
| 1299 | mutex_unlock(&ipa_ctx->lock); |
| 1300 | return -EFAULT; |
| 1301 | } |
| 1302 | id = tbl->id; |
| 1303 | |
| 1304 | /* do not remove the "default" routing tbl which has index 0 */ |
| 1305 | if (tbl->idx != apps_start_idx) { |
| 1306 | if (!tbl->in_sys) { |
| 1307 | list_del(&tbl->link); |
| 1308 | set->tbl_cnt--; |
| 1309 | clear_bit(tbl->idx, |
| 1310 | &ipa_ctx->rt_idx_bitmap[ip]); |
| 1311 | IPADBG("rst rt tbl_idx=%d tbl_cnt=%d\n", |
| 1312 | tbl->idx, set->tbl_cnt); |
| 1313 | kmem_cache_free(ipa_ctx->rt_tbl_cache, tbl); |
| 1314 | } else { |
| 1315 | list_move(&tbl->link, &rset->head_rt_tbl_list); |
| 1316 | clear_bit(tbl->idx, |
| 1317 | &ipa_ctx->rt_idx_bitmap[ip]); |
| 1318 | set->tbl_cnt--; |
| 1319 | IPADBG("rst sys rt tbl_idx=%d tbl_cnt=%d\n", |
| 1320 | tbl->idx, set->tbl_cnt); |
| 1321 | } |
| 1322 | /* remove the handle from the database */ |
| 1323 | ipa_id_remove(id); |
| 1324 | } |
| 1325 | } |
| 1326 | mutex_unlock(&ipa_ctx->lock); |
| 1327 | |
| 1328 | return 0; |
| 1329 | } |
| 1330 | |
| 1331 | /** |
| 1332 | * ipa2_get_rt_tbl() - lookup the specified routing table and return handle if |
| 1333 | * it exists, if lookup succeeds the routing table ref cnt is increased |
| 1334 | * @lookup: [inout] routing table to lookup and its handle |
| 1335 | * |
| 1336 | * Returns: 0 on success, negative on failure |
| 1337 | * |
| 1338 | * Note: Should not be called from atomic context |
| 1339 | * Caller should call ipa_put_rt_tbl later if this function succeeds |
| 1340 | */ |
| 1341 | int ipa2_get_rt_tbl(struct ipa_ioc_get_rt_tbl *lookup) |
| 1342 | { |
| 1343 | struct ipa_rt_tbl *entry; |
| 1344 | int result = -EFAULT; |
| 1345 | |
| 1346 | if (lookup == NULL || lookup->ip >= IPA_IP_MAX) { |
| 1347 | IPAERR("bad parm\n"); |
| 1348 | return -EINVAL; |
| 1349 | } |
| 1350 | mutex_lock(&ipa_ctx->lock); |
| 1351 | entry = __ipa_find_rt_tbl(lookup->ip, lookup->name); |
| 1352 | if (entry && entry->cookie == IPA_COOKIE) { |
| 1353 | entry->ref_cnt++; |
| 1354 | lookup->hdl = entry->id; |
| 1355 | |
| 1356 | /* commit for get */ |
| 1357 | if (ipa_ctx->ctrl->ipa_commit_rt(lookup->ip)) |
| 1358 | IPAERR("fail to commit RT tbl\n"); |
| 1359 | |
| 1360 | result = 0; |
| 1361 | } |
| 1362 | mutex_unlock(&ipa_ctx->lock); |
| 1363 | |
| 1364 | return result; |
| 1365 | } |
| 1366 | |
| 1367 | /** |
| 1368 | * ipa2_put_rt_tbl() - Release the specified routing table handle |
| 1369 | * @rt_tbl_hdl: [in] the routing table handle to release |
| 1370 | * |
| 1371 | * Returns: 0 on success, negative on failure |
| 1372 | * |
| 1373 | * Note: Should not be called from atomic context |
| 1374 | */ |
| 1375 | int ipa2_put_rt_tbl(u32 rt_tbl_hdl) |
| 1376 | { |
| 1377 | struct ipa_rt_tbl *entry; |
| 1378 | enum ipa_ip_type ip = IPA_IP_MAX; |
| 1379 | int result; |
| 1380 | |
| 1381 | mutex_lock(&ipa_ctx->lock); |
| 1382 | entry = ipa_id_find(rt_tbl_hdl); |
| 1383 | if (entry == NULL) { |
| 1384 | IPAERR("lookup failed\n"); |
| 1385 | result = -EINVAL; |
| 1386 | goto ret; |
| 1387 | } |
| 1388 | |
| 1389 | if ((entry->cookie != IPA_COOKIE) || entry->ref_cnt == 0) { |
| 1390 | IPAERR("bad parms\n"); |
| 1391 | result = -EINVAL; |
| 1392 | goto ret; |
| 1393 | } |
| 1394 | |
| 1395 | if (entry->set == &ipa_ctx->rt_tbl_set[IPA_IP_v4]) |
| 1396 | ip = IPA_IP_v4; |
| 1397 | else if (entry->set == &ipa_ctx->rt_tbl_set[IPA_IP_v6]) |
| 1398 | ip = IPA_IP_v6; |
| 1399 | else |
| 1400 | WARN_ON(1); |
| 1401 | |
| 1402 | entry->ref_cnt--; |
| 1403 | if (entry->ref_cnt == 0 && entry->rule_cnt == 0) { |
| 1404 | if (__ipa_del_rt_tbl(entry)) |
| 1405 | IPAERR("fail to del RT tbl\n"); |
| 1406 | /* commit for put */ |
| 1407 | if (ipa_ctx->ctrl->ipa_commit_rt(ip)) |
| 1408 | IPAERR("fail to commit RT tbl\n"); |
| 1409 | } |
| 1410 | |
| 1411 | result = 0; |
| 1412 | |
| 1413 | ret: |
| 1414 | mutex_unlock(&ipa_ctx->lock); |
| 1415 | |
| 1416 | return result; |
| 1417 | } |
| 1418 | |
| 1419 | |
| 1420 | static int __ipa_mdfy_rt_rule(struct ipa_rt_rule_mdfy *rtrule) |
| 1421 | { |
| 1422 | struct ipa_rt_entry *entry; |
| 1423 | struct ipa_hdr_entry *hdr = NULL; |
| 1424 | |
| 1425 | if (rtrule->rule.hdr_hdl) { |
| 1426 | hdr = ipa_id_find(rtrule->rule.hdr_hdl); |
| 1427 | if ((hdr == NULL) || (hdr->cookie != IPA_COOKIE)) { |
| 1428 | IPAERR("rt rule does not point to valid hdr\n"); |
| 1429 | goto error; |
| 1430 | } |
| 1431 | } |
| 1432 | |
| 1433 | entry = ipa_id_find(rtrule->rt_rule_hdl); |
| 1434 | if (entry == NULL) { |
| 1435 | IPAERR("lookup failed\n"); |
| 1436 | goto error; |
| 1437 | } |
| 1438 | |
| 1439 | if (entry->cookie != IPA_COOKIE) { |
| 1440 | IPAERR("bad params\n"); |
| 1441 | goto error; |
| 1442 | } |
| 1443 | |
| 1444 | if (entry->hdr) |
| 1445 | entry->hdr->ref_cnt--; |
| 1446 | |
| 1447 | entry->rule = rtrule->rule; |
| 1448 | entry->hdr = hdr; |
| 1449 | |
| 1450 | if (entry->hdr) |
| 1451 | entry->hdr->ref_cnt++; |
| 1452 | |
| 1453 | return 0; |
| 1454 | |
| 1455 | error: |
| 1456 | return -EPERM; |
| 1457 | } |
| 1458 | |
| 1459 | /** |
| 1460 | * ipa2_mdfy_rt_rule() - Modify the specified routing rules in SW and optionally |
| 1461 | * commit to IPA HW |
| 1462 | * |
| 1463 | * Returns: 0 on success, negative on failure |
| 1464 | * |
| 1465 | * Note: Should not be called from atomic context |
| 1466 | */ |
| 1467 | int ipa2_mdfy_rt_rule(struct ipa_ioc_mdfy_rt_rule *hdls) |
| 1468 | { |
| 1469 | int i; |
| 1470 | int result; |
| 1471 | |
| 1472 | if (hdls == NULL || hdls->num_rules == 0 || hdls->ip >= IPA_IP_MAX) { |
| 1473 | IPAERR("bad parm\n"); |
| 1474 | return -EINVAL; |
| 1475 | } |
| 1476 | |
| 1477 | mutex_lock(&ipa_ctx->lock); |
| 1478 | for (i = 0; i < hdls->num_rules; i++) { |
| 1479 | if (__ipa_mdfy_rt_rule(&hdls->rules[i])) { |
| 1480 | IPAERR("failed to mdfy rt rule %i\n", i); |
| 1481 | hdls->rules[i].status = IPA_RT_STATUS_OF_MDFY_FAILED; |
| 1482 | } else { |
| 1483 | hdls->rules[i].status = 0; |
| 1484 | } |
| 1485 | } |
| 1486 | |
| 1487 | if (hdls->commit) |
| 1488 | if (ipa_ctx->ctrl->ipa_commit_rt(hdls->ip)) { |
| 1489 | result = -EPERM; |
| 1490 | goto bail; |
| 1491 | } |
| 1492 | result = 0; |
| 1493 | bail: |
| 1494 | mutex_unlock(&ipa_ctx->lock); |
| 1495 | |
| 1496 | return result; |
| 1497 | } |