Ghanim Fodi | 5fd0c95 | 2018-01-31 14:49:37 +0200 | [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 <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; |
Mohammed Javid | 6f6eadb | 2018-02-20 16:01:26 +0530 | [diff] [blame] | 54 | struct ipa_hdr_entry *hdr_entry; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 55 | |
| 56 | if (buf == NULL) { |
Mohammed Javid | 025d7bb | 2017-08-01 19:05:06 +0530 | [diff] [blame] | 57 | memset(tmp, 0, (IPA_RT_FLT_HW_RULE_BUF_SIZE/4)); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 58 | buf = (u8 *)tmp; |
| 59 | } |
| 60 | |
| 61 | start = buf; |
| 62 | rule_hdr = (struct ipa_rt_rule_hw_hdr *)buf; |
| 63 | pipe_idx = ipa2_get_ep_mapping(entry->rule.dst); |
| 64 | if (pipe_idx == -1) { |
| 65 | IPAERR("Wrong destination pipe specified in RT rule\n"); |
| 66 | WARN_ON(1); |
| 67 | return -EPERM; |
| 68 | } |
| 69 | if (!IPA_CLIENT_IS_CONS(entry->rule.dst)) { |
| 70 | IPAERR("No RT rule on IPA_client_producer pipe.\n"); |
| 71 | IPAERR("pipe_idx: %d dst_pipe: %d\n", |
| 72 | pipe_idx, entry->rule.dst); |
| 73 | WARN_ON(1); |
| 74 | return -EPERM; |
| 75 | } |
| 76 | rule_hdr->u.hdr.pipe_dest_idx = pipe_idx; |
| 77 | rule_hdr->u.hdr.system = !ipa_ctx->hdr_tbl_lcl; |
Mohammed Javid | 6f6eadb | 2018-02-20 16:01:26 +0530 | [diff] [blame] | 78 | |
| 79 | /* Adding check to confirm still |
| 80 | * header entry present in header table or not |
| 81 | */ |
| 82 | |
| 83 | if (entry->hdr) { |
| 84 | hdr_entry = ipa_id_find(entry->rule.hdr_hdl); |
| 85 | if (!hdr_entry || hdr_entry->cookie != IPA_HDR_COOKIE) { |
| 86 | IPAERR_RL("Header entry already deleted\n"); |
| 87 | return -EPERM; |
| 88 | } |
| 89 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 90 | if (entry->hdr) { |
Mohammed Javid | 025d7bb | 2017-08-01 19:05:06 +0530 | [diff] [blame] | 91 | if (entry->hdr->cookie == IPA_HDR_COOKIE) { |
| 92 | rule_hdr->u.hdr.hdr_offset = |
| 93 | entry->hdr->offset_entry->offset >> 2; |
| 94 | } else { |
| 95 | IPAERR("Entry hdr deleted by user = %d cookie = %u\n", |
| 96 | entry->hdr->user_deleted, entry->hdr->cookie); |
| 97 | WARN_ON(1); |
| 98 | rule_hdr->u.hdr.hdr_offset = 0; |
| 99 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 100 | } else { |
| 101 | rule_hdr->u.hdr.hdr_offset = 0; |
| 102 | } |
| 103 | buf += sizeof(struct ipa_rt_rule_hw_hdr); |
| 104 | |
| 105 | if (ipa_generate_hw_rule(ip, &rule->attrib, &buf, &en_rule)) { |
| 106 | IPAERR("fail to generate hw rule\n"); |
| 107 | return -EPERM; |
| 108 | } |
| 109 | |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 110 | IPADBG_LOW("en_rule 0x%x\n", en_rule); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 111 | |
| 112 | rule_hdr->u.hdr.en_rule = en_rule; |
| 113 | ipa_write_32(rule_hdr->u.word, (u8 *)rule_hdr); |
| 114 | |
| 115 | if (entry->hw_len == 0) { |
| 116 | entry->hw_len = buf - start; |
| 117 | } else if (entry->hw_len != (buf - start)) { |
| 118 | IPAERR( |
Teng Fei Fan | 7d75194 | 2018-02-02 16:51:00 +0800 | [diff] [blame] | 119 | "hw_len differs b/w passes passed=0x%x calc=0x%zxtd\n", |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 120 | entry->hw_len, |
| 121 | (buf - start)); |
| 122 | return -EPERM; |
| 123 | } |
| 124 | |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * __ipa_generate_rt_hw_rule_v2_5() - generates the routing hardware rule |
| 130 | * @ip: the ip address family type |
| 131 | * @entry: routing entry |
| 132 | * @buf: output buffer, buf == NULL means |
| 133 | * caller wants to know the size of the rule as seen |
| 134 | * by HW so they did not pass a valid buffer, we will use a |
| 135 | * scratch buffer instead. |
| 136 | * With this scheme we are going to |
| 137 | * generate the rule twice, once to know size using scratch |
| 138 | * buffer and second to write the rule to the actual caller |
| 139 | * supplied buffer which is of required size |
| 140 | * |
| 141 | * Returns: 0 on success, negative on failure |
| 142 | * |
| 143 | * caller needs to hold any needed locks to ensure integrity |
| 144 | * |
| 145 | */ |
| 146 | int __ipa_generate_rt_hw_rule_v2_5(enum ipa_ip_type ip, |
| 147 | struct ipa_rt_entry *entry, u8 *buf) |
| 148 | { |
| 149 | struct ipa_rt_rule_hw_hdr *rule_hdr; |
| 150 | const struct ipa_rt_rule *rule = |
| 151 | (const struct ipa_rt_rule *)&entry->rule; |
| 152 | u16 en_rule = 0; |
| 153 | u32 tmp[IPA_RT_FLT_HW_RULE_BUF_SIZE/4]; |
| 154 | u8 *start; |
| 155 | int pipe_idx; |
Mohammed Javid | 6f6eadb | 2018-02-20 16:01:26 +0530 | [diff] [blame] | 156 | struct ipa_hdr_entry *hdr_entry; |
| 157 | struct ipa_hdr_proc_ctx_entry *hdr_proc_entry; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 158 | |
| 159 | if (buf == NULL) { |
| 160 | memset(tmp, 0, IPA_RT_FLT_HW_RULE_BUF_SIZE); |
| 161 | buf = (u8 *)tmp; |
| 162 | } |
| 163 | |
| 164 | start = buf; |
| 165 | rule_hdr = (struct ipa_rt_rule_hw_hdr *)buf; |
| 166 | pipe_idx = ipa2_get_ep_mapping(entry->rule.dst); |
| 167 | if (pipe_idx == -1) { |
| 168 | IPAERR("Wrong destination pipe specified in RT rule\n"); |
| 169 | WARN_ON(1); |
| 170 | return -EPERM; |
| 171 | } |
| 172 | if (!IPA_CLIENT_IS_CONS(entry->rule.dst)) { |
| 173 | IPAERR("No RT rule on IPA_client_producer pipe.\n"); |
| 174 | IPAERR("pipe_idx: %d dst_pipe: %d\n", |
| 175 | pipe_idx, entry->rule.dst); |
| 176 | WARN_ON(1); |
| 177 | return -EPERM; |
| 178 | } |
| 179 | rule_hdr->u.hdr_v2_5.pipe_dest_idx = pipe_idx; |
Mohammed Javid | 6f6eadb | 2018-02-20 16:01:26 +0530 | [diff] [blame] | 180 | /* Adding check to confirm still |
| 181 | * header entry present in header table or not |
| 182 | */ |
| 183 | |
| 184 | if (entry->hdr) { |
| 185 | hdr_entry = ipa_id_find(entry->rule.hdr_hdl); |
| 186 | if (!hdr_entry || hdr_entry->cookie != IPA_HDR_COOKIE) { |
| 187 | IPAERR_RL("Header entry already deleted\n"); |
| 188 | return -EPERM; |
| 189 | } |
| 190 | } else if (entry->proc_ctx) { |
| 191 | hdr_proc_entry = ipa_id_find(entry->rule.hdr_proc_ctx_hdl); |
| 192 | if (!hdr_proc_entry || |
| 193 | hdr_proc_entry->cookie != IPA_PROC_HDR_COOKIE) { |
| 194 | IPAERR_RL("Proc header entry already deleted\n"); |
| 195 | return -EPERM; |
| 196 | } |
| 197 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 198 | if (entry->proc_ctx || (entry->hdr && entry->hdr->is_hdr_proc_ctx)) { |
| 199 | struct ipa_hdr_proc_ctx_entry *proc_ctx; |
| 200 | |
| 201 | proc_ctx = (entry->proc_ctx) ? : entry->hdr->proc_ctx; |
| 202 | rule_hdr->u.hdr_v2_5.system = !ipa_ctx->hdr_proc_ctx_tbl_lcl; |
| 203 | BUG_ON(proc_ctx->offset_entry->offset & 31); |
| 204 | rule_hdr->u.hdr_v2_5.proc_ctx = 1; |
| 205 | rule_hdr->u.hdr_v2_5.hdr_offset = |
| 206 | (proc_ctx->offset_entry->offset + |
| 207 | ipa_ctx->hdr_proc_ctx_tbl.start_offset) >> 5; |
| 208 | } else if (entry->hdr) { |
| 209 | rule_hdr->u.hdr_v2_5.system = !ipa_ctx->hdr_tbl_lcl; |
| 210 | BUG_ON(entry->hdr->offset_entry->offset & 3); |
| 211 | rule_hdr->u.hdr_v2_5.proc_ctx = 0; |
| 212 | rule_hdr->u.hdr_v2_5.hdr_offset = |
| 213 | entry->hdr->offset_entry->offset >> 2; |
| 214 | } else { |
| 215 | rule_hdr->u.hdr_v2_5.proc_ctx = 0; |
| 216 | rule_hdr->u.hdr_v2_5.hdr_offset = 0; |
| 217 | } |
| 218 | buf += sizeof(struct ipa_rt_rule_hw_hdr); |
| 219 | |
| 220 | if (ipa_generate_hw_rule(ip, &rule->attrib, &buf, &en_rule)) { |
| 221 | IPAERR("fail to generate hw rule\n"); |
| 222 | return -EPERM; |
| 223 | } |
| 224 | |
| 225 | IPADBG("en_rule 0x%x\n", en_rule); |
| 226 | |
| 227 | rule_hdr->u.hdr_v2_5.en_rule = en_rule; |
| 228 | ipa_write_32(rule_hdr->u.word, (u8 *)rule_hdr); |
| 229 | |
| 230 | if (entry->hw_len == 0) { |
| 231 | entry->hw_len = buf - start; |
| 232 | } else if (entry->hw_len != (buf - start)) { |
Teng Fei Fan | 7d75194 | 2018-02-02 16:51:00 +0800 | [diff] [blame] | 233 | IPAERR("hw_len differs b/w passes passed=0x%x calc=0x%zxtd\n", |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 234 | entry->hw_len, (buf - start)); |
| 235 | return -EPERM; |
| 236 | } |
| 237 | |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * __ipa_generate_rt_hw_rule_v2_6L() - generates the routing hardware rule |
| 243 | * @ip: the ip address family type |
| 244 | * @entry: routing entry |
| 245 | * @buf: output buffer, buf == NULL means that the caller wants to know the size |
| 246 | * of the rule as seen by HW so they did not pass a valid buffer, we will |
| 247 | * use a scratch buffer instead. |
| 248 | * With this scheme we are going to generate the rule twice, once to know |
| 249 | * size using scratch buffer and second to write the rule to the actual |
| 250 | * caller supplied buffer which is of required size. |
| 251 | * |
| 252 | * Returns: 0 on success, negative on failure |
| 253 | * |
| 254 | * caller needs to hold any needed locks to ensure integrity |
| 255 | * |
| 256 | */ |
| 257 | int __ipa_generate_rt_hw_rule_v2_6L(enum ipa_ip_type ip, |
| 258 | struct ipa_rt_entry *entry, u8 *buf) |
| 259 | { |
| 260 | /* Same implementation as IPAv2 */ |
| 261 | return __ipa_generate_rt_hw_rule_v2(ip, entry, buf); |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * ipa_get_rt_hw_tbl_size() - returns the size of HW routing table |
| 266 | * @ip: the ip address family type |
| 267 | * @hdr_sz: header size |
| 268 | * @max_rt_idx: maximal index |
| 269 | * |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 270 | * Returns: size on success, negative on failure |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 271 | * |
| 272 | * caller needs to hold any needed locks to ensure integrity |
| 273 | * |
| 274 | * the MSB set in rt_idx_bitmap indicates the size of hdr of routing tbl |
| 275 | */ |
| 276 | static int ipa_get_rt_hw_tbl_size(enum ipa_ip_type ip, u32 *hdr_sz, |
| 277 | int *max_rt_idx) |
| 278 | { |
| 279 | struct ipa_rt_tbl_set *set; |
| 280 | struct ipa_rt_tbl *tbl; |
| 281 | struct ipa_rt_entry *entry; |
| 282 | u32 total_sz = 0; |
| 283 | u32 tbl_sz; |
| 284 | u32 bitmap = ipa_ctx->rt_idx_bitmap[ip]; |
| 285 | int highest_bit_set = IPA_RT_TABLE_INDEX_NOT_FOUND; |
| 286 | int i; |
| 287 | int res; |
| 288 | |
| 289 | *hdr_sz = 0; |
| 290 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 291 | |
| 292 | for (i = 0; i < IPA_RT_INDEX_BITMAP_SIZE; i++) { |
| 293 | if (bitmap & IPA_RT_BIT_MASK) |
| 294 | highest_bit_set = i; |
| 295 | bitmap >>= 1; |
| 296 | } |
| 297 | |
| 298 | *max_rt_idx = highest_bit_set; |
| 299 | if (highest_bit_set == IPA_RT_TABLE_INDEX_NOT_FOUND) { |
| 300 | IPAERR("no rt tbls present\n"); |
| 301 | total_sz = IPA_RT_TABLE_WORD_SIZE; |
| 302 | *hdr_sz = IPA_RT_TABLE_WORD_SIZE; |
| 303 | return total_sz; |
| 304 | } |
| 305 | |
| 306 | *hdr_sz = (highest_bit_set + 1) * IPA_RT_TABLE_WORD_SIZE; |
| 307 | total_sz += *hdr_sz; |
| 308 | list_for_each_entry(tbl, &set->head_rt_tbl_list, link) { |
| 309 | tbl_sz = 0; |
| 310 | list_for_each_entry(entry, &tbl->head_rt_rule_list, link) { |
| 311 | res = ipa_ctx->ctrl->ipa_generate_rt_hw_rule( |
| 312 | ip, |
| 313 | entry, |
| 314 | NULL); |
| 315 | if (res) { |
| 316 | IPAERR("failed to find HW RT rule size\n"); |
| 317 | return -EPERM; |
| 318 | } |
| 319 | tbl_sz += entry->hw_len; |
| 320 | } |
| 321 | |
| 322 | if (tbl_sz) |
| 323 | tbl->sz = tbl_sz + IPA_RT_TABLE_WORD_SIZE; |
| 324 | |
| 325 | if (tbl->in_sys) |
| 326 | continue; |
| 327 | |
| 328 | if (tbl_sz) { |
| 329 | /* add the terminator */ |
| 330 | total_sz += (tbl_sz + IPA_RT_TABLE_WORD_SIZE); |
| 331 | /* every rule-set should start at word boundary */ |
| 332 | total_sz = (total_sz + IPA_RT_ENTRY_MEMORY_ALLIGNMENT) & |
| 333 | ~IPA_RT_ENTRY_MEMORY_ALLIGNMENT; |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | IPADBG("RT HW TBL SZ %d HDR SZ %d IP %d\n", total_sz, *hdr_sz, ip); |
| 338 | |
| 339 | return total_sz; |
| 340 | } |
| 341 | |
| 342 | static int ipa_generate_rt_hw_tbl_common(enum ipa_ip_type ip, u8 *base, u8 *hdr, |
| 343 | u32 body_ofst, u32 apps_start_idx) |
| 344 | { |
| 345 | struct ipa_rt_tbl *tbl; |
| 346 | struct ipa_rt_entry *entry; |
| 347 | struct ipa_rt_tbl_set *set; |
| 348 | u32 offset; |
| 349 | u8 *body; |
| 350 | struct ipa_mem_buffer rt_tbl_mem; |
| 351 | u8 *rt_tbl_mem_body; |
| 352 | int res; |
| 353 | |
| 354 | /* build the rt tbl in the DMA buffer to submit to IPA HW */ |
| 355 | body = base; |
| 356 | |
| 357 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 358 | list_for_each_entry(tbl, &set->head_rt_tbl_list, link) { |
| 359 | if (!tbl->in_sys) { |
| 360 | offset = body - base + body_ofst; |
| 361 | if (offset & IPA_RT_ENTRY_MEMORY_ALLIGNMENT) { |
| 362 | IPAERR("offset is not word multiple %d\n", |
| 363 | offset); |
| 364 | goto proc_err; |
| 365 | } |
| 366 | |
| 367 | /* convert offset to words from bytes */ |
| 368 | offset &= ~IPA_RT_ENTRY_MEMORY_ALLIGNMENT; |
| 369 | /* rule is at an offset from base */ |
| 370 | offset |= IPA_RT_BIT_MASK; |
| 371 | |
| 372 | /* update the hdr at the right index */ |
| 373 | ipa_write_32(offset, hdr + |
| 374 | ((tbl->idx - apps_start_idx) * |
| 375 | IPA_RT_TABLE_WORD_SIZE)); |
| 376 | |
| 377 | /* generate the rule-set */ |
| 378 | list_for_each_entry(entry, &tbl->head_rt_rule_list, |
| 379 | link) { |
| 380 | res = ipa_ctx->ctrl->ipa_generate_rt_hw_rule( |
| 381 | ip, |
| 382 | entry, |
| 383 | body); |
| 384 | if (res) { |
| 385 | IPAERR("failed to gen HW RT rule\n"); |
| 386 | goto proc_err; |
| 387 | } |
| 388 | body += entry->hw_len; |
| 389 | } |
| 390 | |
| 391 | /* write the rule-set terminator */ |
| 392 | body = ipa_write_32(0, body); |
| 393 | if ((long)body & IPA_RT_ENTRY_MEMORY_ALLIGNMENT) |
| 394 | /* advance body to next word boundary */ |
| 395 | body = body + (IPA_RT_TABLE_WORD_SIZE - |
| 396 | ((long)body & |
| 397 | IPA_RT_ENTRY_MEMORY_ALLIGNMENT)); |
| 398 | } else { |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 399 | if (tbl->sz == 0) { |
| 400 | IPAERR("cannot generate 0 size table\n"); |
| 401 | goto proc_err; |
| 402 | } |
| 403 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 404 | /* allocate memory for the RT tbl */ |
| 405 | rt_tbl_mem.size = tbl->sz; |
| 406 | rt_tbl_mem.base = |
| 407 | dma_alloc_coherent(ipa_ctx->pdev, rt_tbl_mem.size, |
| 408 | &rt_tbl_mem.phys_base, GFP_KERNEL); |
| 409 | if (!rt_tbl_mem.base) { |
| 410 | IPAERR("fail to alloc DMA buff of size %d\n", |
| 411 | rt_tbl_mem.size); |
| 412 | WARN_ON(1); |
| 413 | goto proc_err; |
| 414 | } |
| 415 | |
| 416 | WARN_ON(rt_tbl_mem.phys_base & |
| 417 | IPA_RT_ENTRY_MEMORY_ALLIGNMENT); |
| 418 | rt_tbl_mem_body = rt_tbl_mem.base; |
| 419 | memset(rt_tbl_mem.base, 0, rt_tbl_mem.size); |
| 420 | /* update the hdr at the right index */ |
| 421 | ipa_write_32(rt_tbl_mem.phys_base, |
| 422 | hdr + ((tbl->idx - apps_start_idx) * |
| 423 | IPA_RT_TABLE_WORD_SIZE)); |
| 424 | /* generate the rule-set */ |
| 425 | list_for_each_entry(entry, &tbl->head_rt_rule_list, |
| 426 | link) { |
| 427 | res = ipa_ctx->ctrl->ipa_generate_rt_hw_rule( |
| 428 | ip, |
| 429 | entry, |
| 430 | rt_tbl_mem_body); |
| 431 | if (res) { |
| 432 | IPAERR("failed to gen HW RT rule\n"); |
| 433 | WARN_ON(1); |
| 434 | goto rt_table_mem_alloc_failed; |
| 435 | } |
| 436 | rt_tbl_mem_body += entry->hw_len; |
| 437 | } |
| 438 | |
| 439 | /* write the rule-set terminator */ |
| 440 | rt_tbl_mem_body = ipa_write_32(0, rt_tbl_mem_body); |
| 441 | |
| 442 | if (tbl->curr_mem.phys_base) { |
| 443 | WARN_ON(tbl->prev_mem.phys_base); |
| 444 | tbl->prev_mem = tbl->curr_mem; |
| 445 | } |
| 446 | tbl->curr_mem = rt_tbl_mem; |
| 447 | } |
| 448 | } |
| 449 | |
| 450 | return 0; |
| 451 | |
| 452 | rt_table_mem_alloc_failed: |
| 453 | dma_free_coherent(ipa_ctx->pdev, rt_tbl_mem.size, |
| 454 | rt_tbl_mem.base, rt_tbl_mem.phys_base); |
| 455 | proc_err: |
| 456 | return -EPERM; |
| 457 | } |
| 458 | |
| 459 | |
| 460 | /** |
| 461 | * ipa_generate_rt_hw_tbl() - generates the routing hardware table |
| 462 | * @ip: [in] the ip address family type |
| 463 | * @mem: [out] buffer to put the filtering table |
| 464 | * |
| 465 | * Returns: 0 on success, negative on failure |
| 466 | */ |
| 467 | static int ipa_generate_rt_hw_tbl_v1_1(enum ipa_ip_type ip, |
| 468 | struct ipa_mem_buffer *mem) |
| 469 | { |
| 470 | u32 hdr_sz; |
| 471 | u8 *hdr; |
| 472 | u8 *body; |
| 473 | u8 *base; |
| 474 | int max_rt_idx; |
| 475 | int i; |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 476 | int res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 477 | |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 478 | res = ipa_get_rt_hw_tbl_size(ip, &hdr_sz, &max_rt_idx); |
| 479 | if (res < 0) { |
| 480 | IPAERR("ipa_get_rt_hw_tbl_size failed %d\n", res); |
| 481 | goto error; |
| 482 | } |
| 483 | |
| 484 | mem->size = res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 485 | mem->size = (mem->size + IPA_RT_TABLE_MEMORY_ALLIGNMENT) & |
| 486 | ~IPA_RT_TABLE_MEMORY_ALLIGNMENT; |
| 487 | |
| 488 | if (mem->size == 0) { |
| 489 | IPAERR("rt tbl empty ip=%d\n", ip); |
| 490 | goto error; |
| 491 | } |
| 492 | mem->base = dma_alloc_coherent(ipa_ctx->pdev, mem->size, |
| 493 | &mem->phys_base, GFP_KERNEL); |
| 494 | if (!mem->base) { |
| 495 | IPAERR("fail to alloc DMA buff of size %d\n", mem->size); |
| 496 | goto error; |
| 497 | } |
| 498 | |
| 499 | memset(mem->base, 0, mem->size); |
| 500 | |
| 501 | /* build the rt tbl in the DMA buffer to submit to IPA HW */ |
| 502 | base = hdr = (u8 *)mem->base; |
| 503 | body = base + hdr_sz; |
| 504 | |
| 505 | /* setup all indices to point to the empty sys rt tbl */ |
| 506 | for (i = 0; i <= max_rt_idx; i++) |
| 507 | ipa_write_32(ipa_ctx->empty_rt_tbl_mem.phys_base, |
| 508 | hdr + (i * IPA_RT_TABLE_WORD_SIZE)); |
| 509 | |
| 510 | if (ipa_generate_rt_hw_tbl_common(ip, base, hdr, 0, 0)) { |
| 511 | IPAERR("fail to generate RT tbl\n"); |
| 512 | goto proc_err; |
| 513 | } |
| 514 | |
| 515 | return 0; |
| 516 | |
| 517 | proc_err: |
| 518 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, mem->phys_base); |
| 519 | mem->base = NULL; |
| 520 | error: |
| 521 | return -EPERM; |
| 522 | } |
| 523 | |
| 524 | static void __ipa_reap_sys_rt_tbls(enum ipa_ip_type ip) |
| 525 | { |
| 526 | struct ipa_rt_tbl *tbl; |
| 527 | struct ipa_rt_tbl *next; |
| 528 | struct ipa_rt_tbl_set *set; |
| 529 | |
| 530 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 531 | list_for_each_entry(tbl, &set->head_rt_tbl_list, link) { |
| 532 | if (tbl->prev_mem.phys_base) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 533 | IPADBG_LOW("reaping rt"); |
| 534 | IPADBG_LOW("tbl name=%s ip=%d\n", |
| 535 | tbl->name, ip); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 536 | dma_free_coherent(ipa_ctx->pdev, tbl->prev_mem.size, |
| 537 | tbl->prev_mem.base, |
| 538 | tbl->prev_mem.phys_base); |
| 539 | memset(&tbl->prev_mem, 0, sizeof(tbl->prev_mem)); |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | set = &ipa_ctx->reap_rt_tbl_set[ip]; |
| 544 | list_for_each_entry_safe(tbl, next, &set->head_rt_tbl_list, link) { |
| 545 | list_del(&tbl->link); |
| 546 | WARN_ON(tbl->prev_mem.phys_base != 0); |
| 547 | if (tbl->curr_mem.phys_base) { |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 548 | IPADBG_LOW("reaping sys"); |
| 549 | IPADBG_LOW("rt tbl name=%s ip=%d\n", |
| 550 | tbl->name, ip); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 551 | dma_free_coherent(ipa_ctx->pdev, tbl->curr_mem.size, |
| 552 | tbl->curr_mem.base, |
| 553 | tbl->curr_mem.phys_base); |
| 554 | kmem_cache_free(ipa_ctx->rt_tbl_cache, tbl); |
| 555 | } |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | int __ipa_commit_rt_v1_1(enum ipa_ip_type ip) |
| 560 | { |
| 561 | struct ipa_desc desc = { 0 }; |
| 562 | struct ipa_mem_buffer *mem; |
| 563 | void *cmd; |
| 564 | struct ipa_ip_v4_routing_init *v4; |
| 565 | struct ipa_ip_v6_routing_init *v6; |
| 566 | u16 avail; |
| 567 | u16 size; |
Utkarsh Saxena | 67d59b6 | 2017-05-16 22:41:50 +0530 | [diff] [blame] | 568 | 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] | 569 | |
| 570 | mem = kmalloc(sizeof(struct ipa_mem_buffer), GFP_KERNEL); |
| 571 | if (!mem) { |
| 572 | IPAERR("failed to alloc memory object\n"); |
| 573 | goto fail_alloc_mem; |
| 574 | } |
| 575 | |
| 576 | if (ip == IPA_IP_v4) { |
| 577 | avail = ipa_ctx->ip4_rt_tbl_lcl ? IPA_MEM_v1_RAM_V4_RT_SIZE : |
| 578 | IPA_MEM_PART(v4_rt_size_ddr); |
| 579 | size = sizeof(struct ipa_ip_v4_routing_init); |
| 580 | } else { |
| 581 | avail = ipa_ctx->ip6_rt_tbl_lcl ? IPA_MEM_v1_RAM_V6_RT_SIZE : |
| 582 | IPA_MEM_PART(v6_rt_size_ddr); |
| 583 | size = sizeof(struct ipa_ip_v6_routing_init); |
| 584 | } |
Utkarsh Saxena | 67d59b6 | 2017-05-16 22:41:50 +0530 | [diff] [blame] | 585 | cmd = kmalloc(size, flag); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 586 | if (!cmd) { |
| 587 | IPAERR("failed to alloc immediate command object\n"); |
| 588 | goto fail_alloc_cmd; |
| 589 | } |
| 590 | |
| 591 | if (ipa_generate_rt_hw_tbl_v1_1(ip, mem)) { |
| 592 | IPAERR("fail to generate RT HW TBL ip %d\n", ip); |
| 593 | goto fail_hw_tbl_gen; |
| 594 | } |
| 595 | |
| 596 | if (mem->size > avail) { |
| 597 | IPAERR("tbl too big, needed %d avail %d\n", mem->size, avail); |
| 598 | goto fail_send_cmd; |
| 599 | } |
| 600 | |
| 601 | if (ip == IPA_IP_v4) { |
| 602 | v4 = (struct ipa_ip_v4_routing_init *)cmd; |
| 603 | desc.opcode = IPA_IP_V4_ROUTING_INIT; |
| 604 | v4->ipv4_rules_addr = mem->phys_base; |
| 605 | v4->size_ipv4_rules = mem->size; |
| 606 | v4->ipv4_addr = IPA_MEM_v1_RAM_V4_RT_OFST; |
| 607 | IPADBG("putting Routing IPv4 rules to phys 0x%x", |
| 608 | v4->ipv4_addr); |
| 609 | } else { |
| 610 | v6 = (struct ipa_ip_v6_routing_init *)cmd; |
| 611 | desc.opcode = IPA_IP_V6_ROUTING_INIT; |
| 612 | v6->ipv6_rules_addr = mem->phys_base; |
| 613 | v6->size_ipv6_rules = mem->size; |
| 614 | v6->ipv6_addr = IPA_MEM_v1_RAM_V6_RT_OFST; |
| 615 | IPADBG("putting Routing IPv6 rules to phys 0x%x", |
| 616 | v6->ipv6_addr); |
| 617 | } |
| 618 | |
| 619 | desc.pyld = cmd; |
| 620 | desc.len = size; |
| 621 | desc.type = IPA_IMM_CMD_DESC; |
| 622 | IPA_DUMP_BUFF(mem->base, mem->phys_base, mem->size); |
| 623 | |
| 624 | if (ipa_send_cmd(1, &desc)) { |
| 625 | IPAERR("fail to send immediate command\n"); |
| 626 | goto fail_send_cmd; |
| 627 | } |
| 628 | |
| 629 | __ipa_reap_sys_rt_tbls(ip); |
| 630 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, mem->phys_base); |
| 631 | kfree(cmd); |
| 632 | kfree(mem); |
| 633 | |
| 634 | return 0; |
| 635 | |
| 636 | fail_send_cmd: |
| 637 | if (mem->base) |
| 638 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, |
| 639 | mem->phys_base); |
| 640 | fail_hw_tbl_gen: |
| 641 | kfree(cmd); |
| 642 | fail_alloc_cmd: |
| 643 | kfree(mem); |
| 644 | fail_alloc_mem: |
| 645 | return -EPERM; |
| 646 | } |
| 647 | |
| 648 | static int ipa_generate_rt_hw_tbl_v2(enum ipa_ip_type ip, |
| 649 | struct ipa_mem_buffer *mem, struct ipa_mem_buffer *head) |
| 650 | { |
| 651 | u32 hdr_sz; |
| 652 | u8 *hdr; |
| 653 | u8 *body; |
| 654 | u8 *base; |
| 655 | int max_rt_idx; |
| 656 | int i; |
| 657 | u32 *entr; |
| 658 | int num_index; |
| 659 | u32 body_start_offset; |
| 660 | u32 apps_start_idx; |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 661 | int res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 662 | |
| 663 | if (ip == IPA_IP_v4) { |
| 664 | num_index = IPA_MEM_PART(v4_apps_rt_index_hi) - |
| 665 | IPA_MEM_PART(v4_apps_rt_index_lo) + 1; |
| 666 | body_start_offset = IPA_MEM_PART(apps_v4_rt_ofst) - |
| 667 | IPA_MEM_PART(v4_rt_ofst); |
| 668 | apps_start_idx = IPA_MEM_PART(v4_apps_rt_index_lo); |
| 669 | } else { |
| 670 | num_index = IPA_MEM_PART(v6_apps_rt_index_hi) - |
| 671 | IPA_MEM_PART(v6_apps_rt_index_lo) + 1; |
| 672 | body_start_offset = IPA_MEM_PART(apps_v6_rt_ofst) - |
| 673 | IPA_MEM_PART(v6_rt_ofst); |
| 674 | apps_start_idx = IPA_MEM_PART(v6_apps_rt_index_lo); |
| 675 | } |
| 676 | |
| 677 | head->size = num_index * 4; |
| 678 | head->base = dma_alloc_coherent(ipa_ctx->pdev, head->size, |
| 679 | &head->phys_base, GFP_KERNEL); |
| 680 | if (!head->base) { |
| 681 | IPAERR("fail to alloc DMA buff of size %d\n", head->size); |
| 682 | goto err; |
| 683 | } |
| 684 | entr = (u32 *)head->base; |
| 685 | hdr = (u8 *)head->base; |
| 686 | for (i = 1; i <= num_index; i++) { |
| 687 | *entr = ipa_ctx->empty_rt_tbl_mem.phys_base; |
| 688 | entr++; |
| 689 | } |
| 690 | |
Skylar Chang | 8861011 | 2016-10-19 13:30:44 -0700 | [diff] [blame] | 691 | res = ipa_get_rt_hw_tbl_size(ip, &hdr_sz, &max_rt_idx); |
| 692 | if (res < 0) { |
| 693 | IPAERR("ipa_get_rt_hw_tbl_size failed %d\n", res); |
| 694 | goto base_err; |
| 695 | } |
| 696 | |
| 697 | mem->size = res; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 698 | mem->size -= hdr_sz; |
| 699 | mem->size = (mem->size + IPA_RT_TABLE_MEMORY_ALLIGNMENT) & |
| 700 | ~IPA_RT_TABLE_MEMORY_ALLIGNMENT; |
| 701 | |
| 702 | if (mem->size > 0) { |
| 703 | mem->base = dma_alloc_coherent(ipa_ctx->pdev, mem->size, |
| 704 | &mem->phys_base, GFP_KERNEL); |
| 705 | if (!mem->base) { |
| 706 | IPAERR("fail to alloc DMA buff of size %d\n", |
| 707 | mem->size); |
| 708 | goto base_err; |
| 709 | } |
| 710 | memset(mem->base, 0, mem->size); |
| 711 | } |
| 712 | |
| 713 | /* build the rt tbl in the DMA buffer to submit to IPA HW */ |
| 714 | body = base = (u8 *)mem->base; |
| 715 | |
| 716 | if (ipa_generate_rt_hw_tbl_common(ip, base, hdr, body_start_offset, |
| 717 | apps_start_idx)) { |
| 718 | IPAERR("fail to generate RT tbl\n"); |
| 719 | goto proc_err; |
| 720 | } |
| 721 | |
| 722 | return 0; |
| 723 | |
| 724 | proc_err: |
| 725 | if (mem->size) |
| 726 | dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, |
| 727 | mem->phys_base); |
| 728 | base_err: |
| 729 | dma_free_coherent(ipa_ctx->pdev, head->size, head->base, |
| 730 | head->phys_base); |
| 731 | err: |
| 732 | return -EPERM; |
| 733 | } |
| 734 | |
| 735 | int __ipa_commit_rt_v2(enum ipa_ip_type ip) |
| 736 | { |
| 737 | struct ipa_desc desc[2]; |
| 738 | struct ipa_mem_buffer body; |
| 739 | struct ipa_mem_buffer head; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 740 | struct ipa_hw_imm_cmd_dma_shared_mem *cmd1 = NULL; |
| 741 | struct ipa_hw_imm_cmd_dma_shared_mem *cmd2 = NULL; |
Utkarsh Saxena | e651010 | 2017-04-14 19:31:07 +0530 | [diff] [blame] | 742 | 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] | 743 | u16 avail; |
| 744 | u32 num_modem_rt_index; |
| 745 | int rc = 0; |
| 746 | u32 local_addr1; |
| 747 | u32 local_addr2; |
| 748 | bool lcl; |
| 749 | |
| 750 | memset(desc, 0, 2 * sizeof(struct ipa_desc)); |
| 751 | |
| 752 | if (ip == IPA_IP_v4) { |
| 753 | avail = ipa_ctx->ip4_rt_tbl_lcl ? |
| 754 | IPA_MEM_PART(apps_v4_rt_size) : |
| 755 | IPA_MEM_PART(v4_rt_size_ddr); |
| 756 | num_modem_rt_index = |
| 757 | IPA_MEM_PART(v4_modem_rt_index_hi) - |
| 758 | IPA_MEM_PART(v4_modem_rt_index_lo) + 1; |
| 759 | local_addr1 = ipa_ctx->smem_restricted_bytes + |
| 760 | IPA_MEM_PART(v4_rt_ofst) + |
| 761 | num_modem_rt_index * 4; |
| 762 | local_addr2 = ipa_ctx->smem_restricted_bytes + |
| 763 | IPA_MEM_PART(apps_v4_rt_ofst); |
| 764 | lcl = ipa_ctx->ip4_rt_tbl_lcl; |
| 765 | } else { |
| 766 | avail = ipa_ctx->ip6_rt_tbl_lcl ? |
| 767 | IPA_MEM_PART(apps_v6_rt_size) : |
| 768 | IPA_MEM_PART(v6_rt_size_ddr); |
| 769 | num_modem_rt_index = |
| 770 | IPA_MEM_PART(v6_modem_rt_index_hi) - |
| 771 | IPA_MEM_PART(v6_modem_rt_index_lo) + 1; |
| 772 | local_addr1 = ipa_ctx->smem_restricted_bytes + |
| 773 | IPA_MEM_PART(v6_rt_ofst) + |
| 774 | num_modem_rt_index * 4; |
| 775 | local_addr2 = ipa_ctx->smem_restricted_bytes + |
| 776 | IPA_MEM_PART(apps_v6_rt_ofst); |
| 777 | lcl = ipa_ctx->ip6_rt_tbl_lcl; |
| 778 | } |
| 779 | |
| 780 | if (ipa_generate_rt_hw_tbl_v2(ip, &body, &head)) { |
| 781 | IPAERR("fail to generate RT HW TBL ip %d\n", ip); |
| 782 | rc = -EFAULT; |
| 783 | goto fail_gen; |
| 784 | } |
| 785 | |
| 786 | if (body.size > avail) { |
| 787 | IPAERR("tbl too big, needed %d avail %d\n", body.size, avail); |
| 788 | rc = -EFAULT; |
| 789 | goto fail_send_cmd; |
| 790 | } |
| 791 | |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 792 | cmd1 = kzalloc(sizeof(struct ipa_hw_imm_cmd_dma_shared_mem), |
Utkarsh Saxena | e651010 | 2017-04-14 19:31:07 +0530 | [diff] [blame] | 793 | flag); |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 794 | if (cmd1 == NULL) { |
| 795 | IPAERR("Failed to alloc immediate command object\n"); |
| 796 | rc = -ENOMEM; |
| 797 | goto fail_send_cmd; |
| 798 | } |
| 799 | |
| 800 | cmd1->size = head.size; |
| 801 | cmd1->system_addr = head.phys_base; |
| 802 | cmd1->local_addr = local_addr1; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 803 | desc[0].opcode = IPA_DMA_SHARED_MEM; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 804 | desc[0].pyld = (void *)cmd1; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 805 | desc[0].len = sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| 806 | desc[0].type = IPA_IMM_CMD_DESC; |
| 807 | |
| 808 | if (lcl) { |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 809 | cmd2 = kzalloc(sizeof(struct ipa_hw_imm_cmd_dma_shared_mem), |
Utkarsh Saxena | e651010 | 2017-04-14 19:31:07 +0530 | [diff] [blame] | 810 | flag); |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 811 | if (cmd2 == NULL) { |
| 812 | IPAERR("Failed to alloc immediate command object\n"); |
| 813 | rc = -ENOMEM; |
| 814 | goto fail_send_cmd1; |
| 815 | } |
| 816 | |
| 817 | cmd2->size = body.size; |
| 818 | cmd2->system_addr = body.phys_base; |
| 819 | cmd2->local_addr = local_addr2; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 820 | |
| 821 | desc[1].opcode = IPA_DMA_SHARED_MEM; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 822 | desc[1].pyld = (void *)cmd2; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 823 | desc[1].len = sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| 824 | desc[1].type = IPA_IMM_CMD_DESC; |
| 825 | |
| 826 | if (ipa_send_cmd(2, desc)) { |
| 827 | IPAERR("fail to send immediate command\n"); |
| 828 | rc = -EFAULT; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 829 | goto fail_send_cmd2; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 830 | } |
| 831 | } else { |
| 832 | if (ipa_send_cmd(1, desc)) { |
| 833 | IPAERR("fail to send immediate command\n"); |
| 834 | rc = -EFAULT; |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 835 | goto fail_send_cmd1; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 836 | } |
| 837 | } |
| 838 | |
| 839 | IPADBG("HEAD\n"); |
| 840 | IPA_DUMP_BUFF(head.base, head.phys_base, head.size); |
| 841 | if (body.size) { |
| 842 | IPADBG("BODY\n"); |
| 843 | IPA_DUMP_BUFF(body.base, body.phys_base, body.size); |
| 844 | } |
| 845 | __ipa_reap_sys_rt_tbls(ip); |
Utkarsh Saxena | 88dd3e8 | 2017-03-01 19:22:31 +0530 | [diff] [blame] | 846 | |
| 847 | fail_send_cmd2: |
| 848 | kfree(cmd2); |
| 849 | fail_send_cmd1: |
| 850 | kfree(cmd1); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 851 | fail_send_cmd: |
| 852 | dma_free_coherent(ipa_ctx->pdev, head.size, head.base, head.phys_base); |
| 853 | if (body.size) |
| 854 | dma_free_coherent(ipa_ctx->pdev, body.size, body.base, |
| 855 | body.phys_base); |
| 856 | fail_gen: |
| 857 | return rc; |
| 858 | } |
| 859 | |
| 860 | /** |
| 861 | * __ipa_find_rt_tbl() - find the routing table |
| 862 | * which name is given as parameter |
| 863 | * @ip: [in] the ip address family type of the wanted routing table |
| 864 | * @name: [in] the name of the wanted routing table |
| 865 | * |
| 866 | * Returns: the routing table which name is given as parameter, or NULL if it |
| 867 | * doesn't exist |
| 868 | */ |
| 869 | struct ipa_rt_tbl *__ipa_find_rt_tbl(enum ipa_ip_type ip, const char *name) |
| 870 | { |
| 871 | struct ipa_rt_tbl *entry; |
| 872 | struct ipa_rt_tbl_set *set; |
| 873 | |
| 874 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 875 | list_for_each_entry(entry, &set->head_rt_tbl_list, link) { |
| 876 | if (!strcmp(name, entry->name)) |
| 877 | return entry; |
| 878 | } |
| 879 | |
| 880 | return NULL; |
| 881 | } |
| 882 | |
| 883 | /** |
| 884 | * ipa2_query_rt_index() - find the routing table index |
| 885 | * which name and ip type are given as parameters |
| 886 | * @in: [out] the index of the wanted routing table |
| 887 | * |
| 888 | * Returns: the routing table which name is given as parameter, or NULL if it |
| 889 | * doesn't exist |
| 890 | */ |
| 891 | int ipa2_query_rt_index(struct ipa_ioc_get_rt_tbl_indx *in) |
| 892 | { |
| 893 | struct ipa_rt_tbl *entry; |
| 894 | |
| 895 | if (in->ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 896 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 897 | return -EINVAL; |
| 898 | } |
| 899 | |
Mohammed Javid | 47193a1 | 2017-06-15 18:39:07 +0530 | [diff] [blame] | 900 | mutex_lock(&ipa_ctx->lock); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 901 | /* check if this table exists */ |
Mohammed Javid | cd66589 | 2017-10-11 17:05:57 +0530 | [diff] [blame] | 902 | in->name[IPA_RESOURCE_NAME_MAX-1] = '\0'; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 903 | entry = __ipa_find_rt_tbl(in->ip, in->name); |
Mohammed Javid | 47193a1 | 2017-06-15 18:39:07 +0530 | [diff] [blame] | 904 | if (!entry) { |
| 905 | mutex_unlock(&ipa_ctx->lock); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 906 | return -EFAULT; |
Mohammed Javid | 47193a1 | 2017-06-15 18:39:07 +0530 | [diff] [blame] | 907 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 908 | |
| 909 | in->idx = entry->idx; |
Mohammed Javid | 47193a1 | 2017-06-15 18:39:07 +0530 | [diff] [blame] | 910 | mutex_unlock(&ipa_ctx->lock); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 911 | return 0; |
| 912 | } |
| 913 | |
| 914 | static struct ipa_rt_tbl *__ipa_add_rt_tbl(enum ipa_ip_type ip, |
| 915 | const char *name) |
| 916 | { |
| 917 | struct ipa_rt_tbl *entry; |
| 918 | struct ipa_rt_tbl_set *set; |
| 919 | int i; |
| 920 | int id; |
| 921 | |
| 922 | if (ip >= IPA_IP_MAX || name == NULL) { |
| 923 | IPAERR("bad parm\n"); |
| 924 | goto error; |
| 925 | } |
| 926 | |
| 927 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 928 | /* check if this table exists */ |
| 929 | entry = __ipa_find_rt_tbl(ip, name); |
| 930 | if (!entry) { |
| 931 | entry = kmem_cache_zalloc(ipa_ctx->rt_tbl_cache, GFP_KERNEL); |
| 932 | if (!entry) { |
| 933 | IPAERR("failed to alloc RT tbl object\n"); |
| 934 | goto error; |
| 935 | } |
| 936 | /* find a routing tbl index */ |
| 937 | for (i = 0; i < IPA_RT_INDEX_BITMAP_SIZE; i++) { |
| 938 | if (!test_bit(i, &ipa_ctx->rt_idx_bitmap[ip])) { |
| 939 | entry->idx = i; |
| 940 | set_bit(i, &ipa_ctx->rt_idx_bitmap[ip]); |
| 941 | break; |
| 942 | } |
| 943 | } |
| 944 | if (i == IPA_RT_INDEX_BITMAP_SIZE) { |
| 945 | IPAERR("not free RT tbl indices left\n"); |
| 946 | goto fail_rt_idx_alloc; |
| 947 | } |
| 948 | |
| 949 | INIT_LIST_HEAD(&entry->head_rt_rule_list); |
| 950 | INIT_LIST_HEAD(&entry->link); |
| 951 | strlcpy(entry->name, name, IPA_RESOURCE_NAME_MAX); |
| 952 | entry->set = set; |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 953 | entry->cookie = IPA_RT_TBL_COOKIE; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 954 | entry->in_sys = (ip == IPA_IP_v4) ? |
| 955 | !ipa_ctx->ip4_rt_tbl_lcl : !ipa_ctx->ip6_rt_tbl_lcl; |
| 956 | set->tbl_cnt++; |
| 957 | list_add(&entry->link, &set->head_rt_tbl_list); |
| 958 | |
| 959 | IPADBG("add rt tbl idx=%d tbl_cnt=%d ip=%d\n", entry->idx, |
| 960 | set->tbl_cnt, ip); |
| 961 | |
| 962 | id = ipa_id_alloc(entry); |
| 963 | if (id < 0) { |
| 964 | IPAERR("failed to add to tree\n"); |
| 965 | WARN_ON(1); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 966 | goto ipa_insert_failed; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 967 | } |
| 968 | entry->id = id; |
| 969 | } |
| 970 | |
| 971 | return entry; |
| 972 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 973 | ipa_insert_failed: |
| 974 | set->tbl_cnt--; |
| 975 | list_del(&entry->link); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 976 | fail_rt_idx_alloc: |
| 977 | entry->cookie = 0; |
| 978 | kmem_cache_free(ipa_ctx->rt_tbl_cache, entry); |
| 979 | error: |
| 980 | return NULL; |
| 981 | } |
| 982 | |
| 983 | static int __ipa_del_rt_tbl(struct ipa_rt_tbl *entry) |
| 984 | { |
| 985 | enum ipa_ip_type ip = IPA_IP_MAX; |
| 986 | u32 id; |
| 987 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 988 | if (entry == NULL || (entry->cookie != IPA_RT_TBL_COOKIE)) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 989 | IPAERR_RL("bad parms\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 990 | return -EINVAL; |
| 991 | } |
| 992 | id = entry->id; |
| 993 | if (ipa_id_find(id) == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 994 | IPAERR_RL("lookup failed\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 995 | return -EPERM; |
| 996 | } |
| 997 | |
| 998 | if (entry->set == &ipa_ctx->rt_tbl_set[IPA_IP_v4]) |
| 999 | ip = IPA_IP_v4; |
| 1000 | else if (entry->set == &ipa_ctx->rt_tbl_set[IPA_IP_v6]) |
| 1001 | ip = IPA_IP_v6; |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1002 | else { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1003 | WARN_ON(1); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1004 | return -EPERM; |
| 1005 | } |
| 1006 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1007 | |
| 1008 | if (!entry->in_sys) { |
| 1009 | list_del(&entry->link); |
| 1010 | clear_bit(entry->idx, &ipa_ctx->rt_idx_bitmap[ip]); |
| 1011 | entry->set->tbl_cnt--; |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 1012 | IPADBG_LOW("del rt tbl_idx=%d tbl_cnt=%d\n", entry->idx, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1013 | entry->set->tbl_cnt); |
| 1014 | kmem_cache_free(ipa_ctx->rt_tbl_cache, entry); |
| 1015 | } else { |
| 1016 | list_move(&entry->link, |
| 1017 | &ipa_ctx->reap_rt_tbl_set[ip].head_rt_tbl_list); |
| 1018 | clear_bit(entry->idx, &ipa_ctx->rt_idx_bitmap[ip]); |
| 1019 | entry->set->tbl_cnt--; |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 1020 | IPADBG_LOW("del sys rt tbl_idx=%d tbl_cnt=%d\n", entry->idx, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1021 | entry->set->tbl_cnt); |
| 1022 | } |
| 1023 | |
| 1024 | /* remove the handle from the database */ |
| 1025 | ipa_id_remove(id); |
| 1026 | return 0; |
| 1027 | } |
| 1028 | |
| 1029 | static int __ipa_add_rt_rule(enum ipa_ip_type ip, const char *name, |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1030 | const struct ipa_rt_rule *rule, u8 at_rear, u32 *rule_hdl, |
| 1031 | bool user) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1032 | { |
| 1033 | struct ipa_rt_tbl *tbl; |
| 1034 | struct ipa_rt_entry *entry; |
| 1035 | struct ipa_hdr_entry *hdr = NULL; |
| 1036 | struct ipa_hdr_proc_ctx_entry *proc_ctx = NULL; |
| 1037 | int id; |
| 1038 | |
| 1039 | if (rule->hdr_hdl && rule->hdr_proc_ctx_hdl) { |
| 1040 | IPAERR("rule contains both hdr_hdl and hdr_proc_ctx_hdl\n"); |
| 1041 | goto error; |
| 1042 | } |
| 1043 | |
| 1044 | if (rule->hdr_hdl) { |
| 1045 | hdr = ipa_id_find(rule->hdr_hdl); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1046 | if ((hdr == NULL) || (hdr->cookie != IPA_HDR_COOKIE)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1047 | IPAERR("rt rule does not point to valid hdr\n"); |
| 1048 | goto error; |
| 1049 | } |
| 1050 | } else if (rule->hdr_proc_ctx_hdl) { |
| 1051 | proc_ctx = ipa_id_find(rule->hdr_proc_ctx_hdl); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1052 | if ((proc_ctx == NULL) || |
| 1053 | (proc_ctx->cookie != IPA_PROC_HDR_COOKIE)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1054 | IPAERR("rt rule does not point to valid proc ctx\n"); |
| 1055 | goto error; |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | |
| 1060 | tbl = __ipa_add_rt_tbl(ip, name); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1061 | if (tbl == NULL || (tbl->cookie != IPA_RT_TBL_COOKIE)) { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1062 | IPAERR("bad params\n"); |
| 1063 | goto error; |
| 1064 | } |
| 1065 | /* |
| 1066 | * do not allow any rules to be added at end of the "default" routing |
| 1067 | * tables |
| 1068 | */ |
| 1069 | if (!strcmp(tbl->name, IPA_DFLT_RT_TBL_NAME) && |
| 1070 | (tbl->rule_cnt > 0) && (at_rear != 0)) { |
| 1071 | IPAERR("cannot add rule at end of tbl rule_cnt=%d at_rear=%d\n", |
| 1072 | tbl->rule_cnt, at_rear); |
| 1073 | goto error; |
| 1074 | } |
| 1075 | |
| 1076 | entry = kmem_cache_zalloc(ipa_ctx->rt_rule_cache, GFP_KERNEL); |
| 1077 | if (!entry) { |
| 1078 | IPAERR("failed to alloc RT rule object\n"); |
| 1079 | goto error; |
| 1080 | } |
| 1081 | INIT_LIST_HEAD(&entry->link); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1082 | entry->cookie = IPA_RT_RULE_COOKIE; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1083 | entry->rule = *rule; |
| 1084 | entry->tbl = tbl; |
| 1085 | entry->hdr = hdr; |
| 1086 | entry->proc_ctx = proc_ctx; |
| 1087 | if (at_rear) |
| 1088 | list_add_tail(&entry->link, &tbl->head_rt_rule_list); |
| 1089 | else |
| 1090 | list_add(&entry->link, &tbl->head_rt_rule_list); |
| 1091 | tbl->rule_cnt++; |
| 1092 | if (entry->hdr) |
| 1093 | entry->hdr->ref_cnt++; |
| 1094 | else if (entry->proc_ctx) |
| 1095 | entry->proc_ctx->ref_cnt++; |
| 1096 | id = ipa_id_alloc(entry); |
| 1097 | if (id < 0) { |
| 1098 | IPAERR("failed to add to tree\n"); |
| 1099 | WARN_ON(1); |
| 1100 | goto ipa_insert_failed; |
| 1101 | } |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 1102 | IPADBG_LOW("add rt rule tbl_idx=%d", tbl->idx); |
| 1103 | IPADBG_LOW("rule_cnt=%d\n", tbl->rule_cnt); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1104 | *rule_hdl = id; |
| 1105 | entry->id = id; |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1106 | entry->ipacm_installed = user; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1107 | |
| 1108 | return 0; |
| 1109 | |
| 1110 | ipa_insert_failed: |
| 1111 | if (entry->hdr) |
| 1112 | entry->hdr->ref_cnt--; |
| 1113 | else if (entry->proc_ctx) |
| 1114 | entry->proc_ctx->ref_cnt--; |
| 1115 | list_del(&entry->link); |
| 1116 | kmem_cache_free(ipa_ctx->rt_rule_cache, entry); |
| 1117 | error: |
| 1118 | return -EPERM; |
| 1119 | } |
| 1120 | |
| 1121 | /** |
| 1122 | * ipa2_add_rt_rule() - Add the specified routing rules to SW and optionally |
| 1123 | * commit to IPA HW |
| 1124 | * @rules: [inout] set of routing rules to add |
| 1125 | * |
| 1126 | * Returns: 0 on success, negative on failure |
| 1127 | * |
| 1128 | * Note: Should not be called from atomic context |
| 1129 | */ |
| 1130 | int ipa2_add_rt_rule(struct ipa_ioc_add_rt_rule *rules) |
| 1131 | { |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1132 | return ipa2_add_rt_rule_usr(rules, false); |
| 1133 | } |
| 1134 | |
| 1135 | /** |
| 1136 | * ipa2_add_rt_rule_usr() - Add the specified routing rules to SW and optionally |
| 1137 | * commit to IPA HW |
| 1138 | * @rules: [inout] set of routing rules to add |
| 1139 | * @user_only: [in] indicate installed by userspace module |
| 1140 | * |
| 1141 | * Returns: 0 on success, negative on failure |
| 1142 | * |
| 1143 | * Note: Should not be called from atomic context |
| 1144 | */ |
| 1145 | int ipa2_add_rt_rule_usr(struct ipa_ioc_add_rt_rule *rules, bool user_only) |
| 1146 | { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1147 | int i; |
| 1148 | int ret; |
| 1149 | |
| 1150 | if (rules == NULL || rules->num_rules == 0 || rules->ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1151 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1152 | return -EINVAL; |
| 1153 | } |
| 1154 | |
| 1155 | mutex_lock(&ipa_ctx->lock); |
| 1156 | for (i = 0; i < rules->num_rules; i++) { |
Mohammed Javid | cd66589 | 2017-10-11 17:05:57 +0530 | [diff] [blame] | 1157 | rules->rt_tbl_name[IPA_RESOURCE_NAME_MAX-1] = '\0'; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1158 | if (__ipa_add_rt_rule(rules->ip, rules->rt_tbl_name, |
| 1159 | &rules->rules[i].rule, |
| 1160 | rules->rules[i].at_rear, |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1161 | &rules->rules[i].rt_rule_hdl, |
| 1162 | user_only)) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1163 | IPAERR_RL("failed to add rt rule %d\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1164 | rules->rules[i].status = IPA_RT_STATUS_OF_ADD_FAILED; |
| 1165 | } else { |
| 1166 | rules->rules[i].status = 0; |
| 1167 | } |
| 1168 | } |
| 1169 | |
| 1170 | if (rules->commit) |
| 1171 | if (ipa_ctx->ctrl->ipa_commit_rt(rules->ip)) { |
| 1172 | ret = -EPERM; |
| 1173 | goto bail; |
| 1174 | } |
| 1175 | |
| 1176 | ret = 0; |
| 1177 | bail: |
| 1178 | mutex_unlock(&ipa_ctx->lock); |
| 1179 | return ret; |
| 1180 | } |
| 1181 | |
| 1182 | int __ipa_del_rt_rule(u32 rule_hdl) |
| 1183 | { |
| 1184 | struct ipa_rt_entry *entry; |
| 1185 | int id; |
Mohammed Javid | 6f6eadb | 2018-02-20 16:01:26 +0530 | [diff] [blame] | 1186 | struct ipa_hdr_entry *hdr_entry; |
| 1187 | struct ipa_hdr_proc_ctx_entry *hdr_proc_entry; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1188 | |
| 1189 | entry = ipa_id_find(rule_hdl); |
| 1190 | |
| 1191 | if (entry == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1192 | IPAERR_RL("lookup failed\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1193 | return -EINVAL; |
| 1194 | } |
| 1195 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1196 | if (entry->cookie != IPA_RT_RULE_COOKIE) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1197 | IPAERR_RL("bad params\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1198 | return -EINVAL; |
| 1199 | } |
| 1200 | |
Ghanim Fodi | 5fd0c95 | 2018-01-31 14:49:37 +0200 | [diff] [blame] | 1201 | if (!strcmp(entry->tbl->name, IPA_DFLT_RT_TBL_NAME)) { |
| 1202 | IPADBG("Deleting rule from default rt table idx=%u\n", |
| 1203 | entry->tbl->idx); |
| 1204 | if (entry->tbl->rule_cnt == 1) { |
| 1205 | IPAERR_RL("Default tbl last rule cannot be deleted\n"); |
| 1206 | return -EINVAL; |
| 1207 | } |
| 1208 | } |
Mohammed Javid | 6f6eadb | 2018-02-20 16:01:26 +0530 | [diff] [blame] | 1209 | /* Adding check to confirm still |
| 1210 | * header entry present in header table or not |
| 1211 | */ |
| 1212 | |
| 1213 | if (entry->hdr) { |
| 1214 | hdr_entry = ipa_id_find(entry->rule.hdr_hdl); |
| 1215 | if (!hdr_entry || hdr_entry->cookie != IPA_HDR_COOKIE) { |
| 1216 | IPAERR_RL("Header entry already deleted\n"); |
| 1217 | return -EINVAL; |
| 1218 | } |
| 1219 | } else if (entry->proc_ctx) { |
| 1220 | hdr_proc_entry = ipa_id_find(entry->rule.hdr_proc_ctx_hdl); |
| 1221 | if (!hdr_proc_entry || |
| 1222 | hdr_proc_entry->cookie != IPA_PROC_HDR_COOKIE) { |
| 1223 | IPAERR_RL("Proc header entry already deleted\n"); |
| 1224 | return -EINVAL; |
| 1225 | } |
| 1226 | } |
Ghanim Fodi | 5fd0c95 | 2018-01-31 14:49:37 +0200 | [diff] [blame] | 1227 | |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1228 | if (entry->hdr) |
| 1229 | __ipa_release_hdr(entry->hdr->id); |
| 1230 | else if (entry->proc_ctx) |
| 1231 | __ipa_release_hdr_proc_ctx(entry->proc_ctx->id); |
| 1232 | list_del(&entry->link); |
| 1233 | entry->tbl->rule_cnt--; |
Utkarsh Saxena | 41d57c5 | 2016-11-16 12:04:28 +0530 | [diff] [blame] | 1234 | IPADBG_LOW("del rt rule tbl_idx=%d rule_cnt=%d\n", entry->tbl->idx, |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1235 | entry->tbl->rule_cnt); |
| 1236 | if (entry->tbl->rule_cnt == 0 && entry->tbl->ref_cnt == 0) { |
| 1237 | if (__ipa_del_rt_tbl(entry->tbl)) |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1238 | IPAERR_RL("fail to del RT tbl\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1239 | } |
| 1240 | entry->cookie = 0; |
| 1241 | id = entry->id; |
| 1242 | kmem_cache_free(ipa_ctx->rt_rule_cache, entry); |
| 1243 | |
| 1244 | /* remove the handle from the database */ |
| 1245 | ipa_id_remove(id); |
| 1246 | |
| 1247 | return 0; |
| 1248 | } |
| 1249 | |
| 1250 | /** |
| 1251 | * ipa2_del_rt_rule() - Remove the specified routing rules to SW and optionally |
| 1252 | * commit to IPA HW |
| 1253 | * @hdls: [inout] set of routing rules to delete |
| 1254 | * |
| 1255 | * Returns: 0 on success, negative on failure |
| 1256 | * |
| 1257 | * Note: Should not be called from atomic context |
| 1258 | */ |
| 1259 | int ipa2_del_rt_rule(struct ipa_ioc_del_rt_rule *hdls) |
| 1260 | { |
| 1261 | int i; |
| 1262 | int ret; |
| 1263 | |
| 1264 | if (hdls == NULL || hdls->num_hdls == 0 || hdls->ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1265 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1266 | return -EINVAL; |
| 1267 | } |
| 1268 | |
| 1269 | mutex_lock(&ipa_ctx->lock); |
| 1270 | for (i = 0; i < hdls->num_hdls; i++) { |
| 1271 | if (__ipa_del_rt_rule(hdls->hdl[i].hdl)) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1272 | IPAERR_RL("failed to del rt rule %i\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1273 | hdls->hdl[i].status = IPA_RT_STATUS_OF_DEL_FAILED; |
| 1274 | } else { |
| 1275 | hdls->hdl[i].status = 0; |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | if (hdls->commit) |
| 1280 | if (ipa_ctx->ctrl->ipa_commit_rt(hdls->ip)) { |
| 1281 | ret = -EPERM; |
| 1282 | goto bail; |
| 1283 | } |
| 1284 | |
| 1285 | ret = 0; |
| 1286 | bail: |
| 1287 | mutex_unlock(&ipa_ctx->lock); |
| 1288 | return ret; |
| 1289 | } |
| 1290 | |
| 1291 | /** |
| 1292 | * ipa2_commit_rt_rule() - Commit the current SW routing table of specified type |
| 1293 | * to IPA HW |
| 1294 | * @ip: The family of routing tables |
| 1295 | * |
| 1296 | * Returns: 0 on success, negative on failure |
| 1297 | * |
| 1298 | * Note: Should not be called from atomic context |
| 1299 | */ |
| 1300 | int ipa2_commit_rt(enum ipa_ip_type ip) |
| 1301 | { |
| 1302 | int ret; |
| 1303 | |
| 1304 | if (ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1305 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1306 | return -EINVAL; |
| 1307 | } |
| 1308 | |
| 1309 | /* |
| 1310 | * issue a commit on the filtering module of same IP type since |
| 1311 | * filtering rules point to routing tables |
| 1312 | */ |
| 1313 | if (ipa2_commit_flt(ip)) |
| 1314 | return -EPERM; |
| 1315 | |
| 1316 | mutex_lock(&ipa_ctx->lock); |
| 1317 | if (ipa_ctx->ctrl->ipa_commit_rt(ip)) { |
| 1318 | ret = -EPERM; |
| 1319 | goto bail; |
| 1320 | } |
| 1321 | |
| 1322 | ret = 0; |
| 1323 | bail: |
| 1324 | mutex_unlock(&ipa_ctx->lock); |
| 1325 | return ret; |
| 1326 | } |
| 1327 | |
| 1328 | /** |
| 1329 | * ipa2_reset_rt() - reset the current SW routing table of specified type |
| 1330 | * (does not commit to HW) |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1331 | * @ip: [in] The family of routing tables |
| 1332 | * @user_only: [in] indicate delete rules installed by userspace |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1333 | * |
| 1334 | * Returns: 0 on success, negative on failure |
| 1335 | * |
| 1336 | * Note: Should not be called from atomic context |
| 1337 | */ |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1338 | int ipa2_reset_rt(enum ipa_ip_type ip, bool user_only) |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1339 | { |
| 1340 | struct ipa_rt_tbl *tbl; |
| 1341 | struct ipa_rt_tbl *tbl_next; |
| 1342 | struct ipa_rt_tbl_set *set; |
| 1343 | struct ipa_rt_entry *rule; |
| 1344 | struct ipa_rt_entry *rule_next; |
| 1345 | struct ipa_rt_tbl_set *rset; |
| 1346 | u32 apps_start_idx; |
| 1347 | int id; |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1348 | bool tbl_user = false; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1349 | |
| 1350 | if (ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1351 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1352 | return -EINVAL; |
| 1353 | } |
| 1354 | |
| 1355 | if (ipa_ctx->ipa_hw_type >= IPA_HW_v2_0) { |
| 1356 | if (ip == IPA_IP_v4) |
| 1357 | apps_start_idx = IPA_MEM_PART(v4_apps_rt_index_lo); |
| 1358 | else |
| 1359 | apps_start_idx = IPA_MEM_PART(v6_apps_rt_index_lo); |
| 1360 | } else { |
| 1361 | apps_start_idx = 0; |
| 1362 | } |
| 1363 | |
| 1364 | /* |
| 1365 | * issue a reset on the filtering module of same IP type since |
| 1366 | * filtering rules point to routing tables |
| 1367 | */ |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1368 | if (ipa2_reset_flt(ip, user_only)) |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1369 | IPAERR_RL("fail to reset flt ip=%d\n", ip); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1370 | |
| 1371 | set = &ipa_ctx->rt_tbl_set[ip]; |
| 1372 | rset = &ipa_ctx->reap_rt_tbl_set[ip]; |
| 1373 | mutex_lock(&ipa_ctx->lock); |
| 1374 | IPADBG("reset rt ip=%d\n", ip); |
| 1375 | list_for_each_entry_safe(tbl, tbl_next, &set->head_rt_tbl_list, link) { |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1376 | tbl_user = false; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1377 | list_for_each_entry_safe(rule, rule_next, |
| 1378 | &tbl->head_rt_rule_list, link) { |
| 1379 | if (ipa_id_find(rule->id) == NULL) { |
| 1380 | WARN_ON(1); |
| 1381 | mutex_unlock(&ipa_ctx->lock); |
| 1382 | return -EFAULT; |
| 1383 | } |
| 1384 | |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1385 | /* indicate if tbl used for user-specified rules*/ |
| 1386 | if (rule->ipacm_installed) { |
| 1387 | IPADBG("tbl_user %d, tbl-index %d\n", |
| 1388 | tbl_user, tbl->id); |
| 1389 | tbl_user = true; |
| 1390 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1391 | /* |
| 1392 | * for the "default" routing tbl, remove all but the |
| 1393 | * last rule |
| 1394 | */ |
| 1395 | if (tbl->idx == apps_start_idx && tbl->rule_cnt == 1) |
| 1396 | continue; |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1397 | if (!user_only || |
| 1398 | rule->ipacm_installed) { |
| 1399 | list_del(&rule->link); |
| 1400 | tbl->rule_cnt--; |
| 1401 | if (rule->hdr) |
| 1402 | __ipa_release_hdr(rule->hdr->id); |
| 1403 | else if (rule->proc_ctx) |
| 1404 | __ipa_release_hdr_proc_ctx( |
| 1405 | rule->proc_ctx->id); |
| 1406 | rule->cookie = 0; |
| 1407 | id = rule->id; |
| 1408 | kmem_cache_free(ipa_ctx->rt_rule_cache, rule); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1409 | |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1410 | /* remove the handle from the database */ |
| 1411 | ipa_id_remove(id); |
| 1412 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1413 | } |
| 1414 | |
| 1415 | if (ipa_id_find(tbl->id) == NULL) { |
| 1416 | WARN_ON(1); |
| 1417 | mutex_unlock(&ipa_ctx->lock); |
| 1418 | return -EFAULT; |
| 1419 | } |
| 1420 | id = tbl->id; |
| 1421 | |
| 1422 | /* do not remove the "default" routing tbl which has index 0 */ |
| 1423 | if (tbl->idx != apps_start_idx) { |
Skylar Chang | 68c37d8 | 2018-04-07 16:42:36 -0700 | [diff] [blame] | 1424 | if (!user_only || tbl_user) { |
| 1425 | if (!tbl->in_sys) { |
| 1426 | list_del(&tbl->link); |
| 1427 | set->tbl_cnt--; |
| 1428 | clear_bit(tbl->idx, |
| 1429 | &ipa_ctx->rt_idx_bitmap[ip]); |
| 1430 | IPADBG("rst rt tbl_idx=%d tbl_cnt=%d\n", |
| 1431 | tbl->idx, set->tbl_cnt); |
| 1432 | kmem_cache_free(ipa_ctx->rt_tbl_cache, |
| 1433 | tbl); |
| 1434 | } else { |
| 1435 | list_move(&tbl->link, |
| 1436 | &rset->head_rt_tbl_list); |
| 1437 | clear_bit(tbl->idx, |
| 1438 | &ipa_ctx->rt_idx_bitmap[ip]); |
| 1439 | set->tbl_cnt--; |
| 1440 | IPADBG("rst tbl_idx=%d cnt=%d\n", |
| 1441 | tbl->idx, set->tbl_cnt); |
| 1442 | } |
| 1443 | /* remove the handle from the database */ |
| 1444 | ipa_id_remove(id); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1445 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1446 | } |
| 1447 | } |
Skylar Chang | 5ec274f | 2018-05-03 02:18:34 -0700 | [diff] [blame^] | 1448 | |
| 1449 | /* commit the change to IPA-HW */ |
| 1450 | if (ipa_ctx->ctrl->ipa_commit_rt(IPA_IP_v4) || |
| 1451 | ipa_ctx->ctrl->ipa_commit_rt(IPA_IP_v6)) { |
| 1452 | IPAERR("fail to commit rt-rule\n"); |
| 1453 | WARN_ON_RATELIMIT_IPA(1); |
| 1454 | mutex_unlock(&ipa_ctx->lock); |
| 1455 | return -EPERM; |
| 1456 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1457 | mutex_unlock(&ipa_ctx->lock); |
| 1458 | |
| 1459 | return 0; |
| 1460 | } |
| 1461 | |
| 1462 | /** |
| 1463 | * ipa2_get_rt_tbl() - lookup the specified routing table and return handle if |
| 1464 | * it exists, if lookup succeeds the routing table ref cnt is increased |
| 1465 | * @lookup: [inout] routing table to lookup and its handle |
| 1466 | * |
| 1467 | * Returns: 0 on success, negative on failure |
| 1468 | * |
| 1469 | * Note: Should not be called from atomic context |
| 1470 | * Caller should call ipa_put_rt_tbl later if this function succeeds |
| 1471 | */ |
| 1472 | int ipa2_get_rt_tbl(struct ipa_ioc_get_rt_tbl *lookup) |
| 1473 | { |
| 1474 | struct ipa_rt_tbl *entry; |
| 1475 | int result = -EFAULT; |
| 1476 | |
| 1477 | if (lookup == NULL || lookup->ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1478 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1479 | return -EINVAL; |
| 1480 | } |
| 1481 | mutex_lock(&ipa_ctx->lock); |
Mohammed Javid | cd66589 | 2017-10-11 17:05:57 +0530 | [diff] [blame] | 1482 | lookup->name[IPA_RESOURCE_NAME_MAX-1] = '\0'; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1483 | entry = __ipa_find_rt_tbl(lookup->ip, lookup->name); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1484 | if (entry && entry->cookie == IPA_RT_TBL_COOKIE) { |
Utkarsh Saxena | 69e4ab0b | 2017-04-25 17:39:41 +0530 | [diff] [blame] | 1485 | if (entry->ref_cnt == U32_MAX) { |
| 1486 | IPAERR("fail: ref count crossed limit\n"); |
| 1487 | goto ret; |
| 1488 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1489 | entry->ref_cnt++; |
| 1490 | lookup->hdl = entry->id; |
| 1491 | |
| 1492 | /* commit for get */ |
| 1493 | if (ipa_ctx->ctrl->ipa_commit_rt(lookup->ip)) |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1494 | IPAERR_RL("fail to commit RT tbl\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1495 | |
| 1496 | result = 0; |
| 1497 | } |
Utkarsh Saxena | 69e4ab0b | 2017-04-25 17:39:41 +0530 | [diff] [blame] | 1498 | |
| 1499 | ret: |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1500 | mutex_unlock(&ipa_ctx->lock); |
| 1501 | |
| 1502 | return result; |
| 1503 | } |
| 1504 | |
| 1505 | /** |
| 1506 | * ipa2_put_rt_tbl() - Release the specified routing table handle |
| 1507 | * @rt_tbl_hdl: [in] the routing table handle to release |
| 1508 | * |
| 1509 | * Returns: 0 on success, negative on failure |
| 1510 | * |
| 1511 | * Note: Should not be called from atomic context |
| 1512 | */ |
| 1513 | int ipa2_put_rt_tbl(u32 rt_tbl_hdl) |
| 1514 | { |
| 1515 | struct ipa_rt_tbl *entry; |
| 1516 | enum ipa_ip_type ip = IPA_IP_MAX; |
Mohammed Javid | 42ad67b | 2017-07-27 15:12:18 +0530 | [diff] [blame] | 1517 | int result = 0; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1518 | |
| 1519 | mutex_lock(&ipa_ctx->lock); |
| 1520 | entry = ipa_id_find(rt_tbl_hdl); |
| 1521 | if (entry == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1522 | IPAERR_RL("lookup failed\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1523 | result = -EINVAL; |
| 1524 | goto ret; |
| 1525 | } |
| 1526 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1527 | if ((entry->cookie != IPA_RT_TBL_COOKIE) || entry->ref_cnt == 0) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1528 | IPAERR_RL("bad parms\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1529 | result = -EINVAL; |
| 1530 | goto ret; |
| 1531 | } |
| 1532 | |
| 1533 | if (entry->set == &ipa_ctx->rt_tbl_set[IPA_IP_v4]) |
| 1534 | ip = IPA_IP_v4; |
| 1535 | else if (entry->set == &ipa_ctx->rt_tbl_set[IPA_IP_v6]) |
| 1536 | ip = IPA_IP_v6; |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1537 | else { |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1538 | WARN_ON(1); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1539 | result = -EINVAL; |
| 1540 | goto ret; |
| 1541 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1542 | |
| 1543 | entry->ref_cnt--; |
| 1544 | if (entry->ref_cnt == 0 && entry->rule_cnt == 0) { |
| 1545 | if (__ipa_del_rt_tbl(entry)) |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1546 | IPAERR_RL("fail to del RT tbl\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1547 | /* commit for put */ |
| 1548 | if (ipa_ctx->ctrl->ipa_commit_rt(ip)) |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1549 | IPAERR_RL("fail to commit RT tbl\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1550 | } |
| 1551 | |
| 1552 | result = 0; |
| 1553 | |
| 1554 | ret: |
| 1555 | mutex_unlock(&ipa_ctx->lock); |
| 1556 | |
| 1557 | return result; |
| 1558 | } |
| 1559 | |
| 1560 | |
| 1561 | static int __ipa_mdfy_rt_rule(struct ipa_rt_rule_mdfy *rtrule) |
| 1562 | { |
| 1563 | struct ipa_rt_entry *entry; |
| 1564 | struct ipa_hdr_entry *hdr = NULL; |
Mohammed Javid | 6f6eadb | 2018-02-20 16:01:26 +0530 | [diff] [blame] | 1565 | struct ipa_hdr_entry *hdr_entry; |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1566 | |
| 1567 | if (rtrule->rule.hdr_hdl) { |
| 1568 | hdr = ipa_id_find(rtrule->rule.hdr_hdl); |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1569 | if ((hdr == NULL) || (hdr->cookie != IPA_HDR_COOKIE)) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1570 | IPAERR_RL("rt rule does not point to valid hdr\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1571 | goto error; |
| 1572 | } |
| 1573 | } |
| 1574 | |
| 1575 | entry = ipa_id_find(rtrule->rt_rule_hdl); |
| 1576 | if (entry == NULL) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1577 | IPAERR_RL("lookup failed\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1578 | goto error; |
| 1579 | } |
| 1580 | |
Mohammed Javid | 93e94ce | 2017-06-15 15:39:04 +0530 | [diff] [blame] | 1581 | if (entry->cookie != IPA_RT_RULE_COOKIE) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1582 | IPAERR_RL("bad params\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1583 | goto error; |
| 1584 | } |
| 1585 | |
Mohammed Javid | 6f6eadb | 2018-02-20 16:01:26 +0530 | [diff] [blame] | 1586 | /* Adding check to confirm still |
| 1587 | * header entry present in header table or not |
| 1588 | */ |
| 1589 | |
| 1590 | if (entry->hdr) { |
| 1591 | hdr_entry = ipa_id_find(entry->rule.hdr_hdl); |
| 1592 | if (!hdr_entry || hdr_entry->cookie != IPA_HDR_COOKIE) { |
| 1593 | IPAERR_RL("Header entry already deleted\n"); |
| 1594 | return -EPERM; |
| 1595 | } |
| 1596 | } |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1597 | if (entry->hdr) |
| 1598 | entry->hdr->ref_cnt--; |
| 1599 | |
| 1600 | entry->rule = rtrule->rule; |
| 1601 | entry->hdr = hdr; |
| 1602 | |
| 1603 | if (entry->hdr) |
| 1604 | entry->hdr->ref_cnt++; |
| 1605 | |
| 1606 | return 0; |
| 1607 | |
| 1608 | error: |
| 1609 | return -EPERM; |
| 1610 | } |
| 1611 | |
| 1612 | /** |
| 1613 | * ipa2_mdfy_rt_rule() - Modify the specified routing rules in SW and optionally |
| 1614 | * commit to IPA HW |
| 1615 | * |
| 1616 | * Returns: 0 on success, negative on failure |
| 1617 | * |
| 1618 | * Note: Should not be called from atomic context |
| 1619 | */ |
| 1620 | int ipa2_mdfy_rt_rule(struct ipa_ioc_mdfy_rt_rule *hdls) |
| 1621 | { |
| 1622 | int i; |
| 1623 | int result; |
| 1624 | |
| 1625 | if (hdls == NULL || hdls->num_rules == 0 || hdls->ip >= IPA_IP_MAX) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1626 | IPAERR_RL("bad parm\n"); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1627 | return -EINVAL; |
| 1628 | } |
| 1629 | |
| 1630 | mutex_lock(&ipa_ctx->lock); |
| 1631 | for (i = 0; i < hdls->num_rules; i++) { |
| 1632 | if (__ipa_mdfy_rt_rule(&hdls->rules[i])) { |
Utkarsh Saxena | e978281 | 2017-05-26 17:20:32 +0530 | [diff] [blame] | 1633 | IPAERR_RL("failed to mdfy rt rule %i\n", i); |
Amir Levy | 9659e59 | 2016-10-27 18:08:27 +0300 | [diff] [blame] | 1634 | hdls->rules[i].status = IPA_RT_STATUS_OF_MDFY_FAILED; |
| 1635 | } else { |
| 1636 | hdls->rules[i].status = 0; |
| 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | if (hdls->commit) |
| 1641 | if (ipa_ctx->ctrl->ipa_commit_rt(hdls->ip)) { |
| 1642 | result = -EPERM; |
| 1643 | goto bail; |
| 1644 | } |
| 1645 | result = 0; |
| 1646 | bail: |
| 1647 | mutex_unlock(&ipa_ctx->lock); |
| 1648 | |
| 1649 | return result; |
| 1650 | } |