| /* Copyright (c) 2012-2016, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include "ipa_i.h" |
| |
| #define IPA_FLT_TABLE_WORD_SIZE (4) |
| #define IPA_FLT_ENTRY_MEMORY_ALLIGNMENT (0x3) |
| #define IPA_FLT_BIT_MASK (0x1) |
| #define IPA_FLT_TABLE_INDEX_NOT_FOUND (-1) |
| #define IPA_FLT_STATUS_OF_ADD_FAILED (-1) |
| #define IPA_FLT_STATUS_OF_DEL_FAILED (-1) |
| #define IPA_FLT_STATUS_OF_MDFY_FAILED (-1) |
| |
| static int ipa_generate_hw_rule_from_eq( |
| const struct ipa_ipfltri_rule_eq *attrib, u8 **buf) |
| { |
| int num_offset_meq_32 = attrib->num_offset_meq_32; |
| int num_ihl_offset_range_16 = attrib->num_ihl_offset_range_16; |
| int num_ihl_offset_meq_32 = attrib->num_ihl_offset_meq_32; |
| int num_offset_meq_128 = attrib->num_offset_meq_128; |
| int i; |
| |
| if (attrib->tos_eq_present) { |
| *buf = ipa_write_8(attrib->tos_eq, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| } |
| |
| if (attrib->protocol_eq_present) { |
| *buf = ipa_write_8(attrib->protocol_eq, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| } |
| |
| if (num_offset_meq_32) { |
| *buf = ipa_write_8(attrib->offset_meq_32[0].offset, *buf); |
| *buf = ipa_write_32(attrib->offset_meq_32[0].mask, *buf); |
| *buf = ipa_write_32(attrib->offset_meq_32[0].value, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| num_offset_meq_32--; |
| } |
| |
| if (num_offset_meq_32) { |
| *buf = ipa_write_8(attrib->offset_meq_32[1].offset, *buf); |
| *buf = ipa_write_32(attrib->offset_meq_32[1].mask, *buf); |
| *buf = ipa_write_32(attrib->offset_meq_32[1].value, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| num_offset_meq_32--; |
| } |
| |
| if (num_ihl_offset_range_16) { |
| *buf = ipa_write_8(attrib->ihl_offset_range_16[0].offset, *buf); |
| *buf = ipa_write_16(attrib->ihl_offset_range_16[0].range_high, |
| *buf); |
| *buf = ipa_write_16(attrib->ihl_offset_range_16[0].range_low, |
| *buf); |
| *buf = ipa_pad_to_32(*buf); |
| num_ihl_offset_range_16--; |
| } |
| |
| if (num_ihl_offset_range_16) { |
| *buf = ipa_write_8(attrib->ihl_offset_range_16[1].offset, *buf); |
| *buf = ipa_write_16(attrib->ihl_offset_range_16[1].range_high, |
| *buf); |
| *buf = ipa_write_16(attrib->ihl_offset_range_16[1].range_low, |
| *buf); |
| *buf = ipa_pad_to_32(*buf); |
| num_ihl_offset_range_16--; |
| } |
| |
| if (attrib->ihl_offset_eq_16_present) { |
| *buf = ipa_write_8(attrib->ihl_offset_eq_16.offset, *buf); |
| *buf = ipa_write_16(attrib->ihl_offset_eq_16.value, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| } |
| |
| if (attrib->ihl_offset_eq_32_present) { |
| *buf = ipa_write_8(attrib->ihl_offset_eq_32.offset, *buf); |
| *buf = ipa_write_32(attrib->ihl_offset_eq_32.value, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| } |
| |
| if (num_ihl_offset_meq_32) { |
| *buf = ipa_write_8(attrib->ihl_offset_meq_32[0].offset, *buf); |
| *buf = ipa_write_32(attrib->ihl_offset_meq_32[0].mask, *buf); |
| *buf = ipa_write_32(attrib->ihl_offset_meq_32[0].value, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| num_ihl_offset_meq_32--; |
| } |
| |
| /* TODO check layout of 16 byte mask and value */ |
| if (num_offset_meq_128) { |
| *buf = ipa_write_8(attrib->offset_meq_128[0].offset, *buf); |
| for (i = 0; i < 16; i++) |
| *buf = ipa_write_8(attrib->offset_meq_128[0].mask[i], |
| *buf); |
| for (i = 0; i < 16; i++) |
| *buf = ipa_write_8(attrib->offset_meq_128[0].value[i], |
| *buf); |
| *buf = ipa_pad_to_32(*buf); |
| num_offset_meq_128--; |
| } |
| |
| if (num_offset_meq_128) { |
| *buf = ipa_write_8(attrib->offset_meq_128[1].offset, *buf); |
| for (i = 0; i < 16; i++) |
| *buf = ipa_write_8(attrib->offset_meq_128[1].mask[i], |
| *buf); |
| for (i = 0; i < 16; i++) |
| *buf = ipa_write_8(attrib->offset_meq_128[1].value[i], |
| *buf); |
| *buf = ipa_pad_to_32(*buf); |
| num_offset_meq_128--; |
| } |
| |
| if (attrib->tc_eq_present) { |
| *buf = ipa_write_8(attrib->tc_eq, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| } |
| |
| if (attrib->fl_eq_present) { |
| *buf = ipa_write_32(attrib->fl_eq, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| } |
| |
| if (num_ihl_offset_meq_32) { |
| *buf = ipa_write_8(attrib->ihl_offset_meq_32[1].offset, *buf); |
| *buf = ipa_write_32(attrib->ihl_offset_meq_32[1].mask, *buf); |
| *buf = ipa_write_32(attrib->ihl_offset_meq_32[1].value, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| num_ihl_offset_meq_32--; |
| } |
| |
| if (attrib->metadata_meq32_present) { |
| *buf = ipa_write_8(attrib->metadata_meq32.offset, *buf); |
| *buf = ipa_write_32(attrib->metadata_meq32.mask, *buf); |
| *buf = ipa_write_32(attrib->metadata_meq32.value, *buf); |
| *buf = ipa_pad_to_32(*buf); |
| } |
| |
| if (attrib->ipv4_frag_eq_present) |
| *buf = ipa_pad_to_32(*buf); |
| |
| return 0; |
| } |
| |
| /** |
| * ipa_generate_flt_hw_rule() - generates the filtering hardware rule |
| * @ip: the ip address family type |
| * @entry: routing entry |
| * @buf: output buffer, buf == NULL means |
| * caller wants to know the size of the rule as seen |
| * by HW so they did not pass a valid buffer, we will use a |
| * scratch buffer instead. |
| * With this scheme we are going to |
| * generate the rule twice, once to know size using scratch |
| * buffer and second to write the rule to the actual caller |
| * supplied buffer which is of required size |
| * |
| * Returns: 0 on success, negative on failure |
| * |
| * caller needs to hold any needed locks to ensure integrity |
| * |
| */ |
| static int ipa_generate_flt_hw_rule(enum ipa_ip_type ip, |
| struct ipa_flt_entry *entry, u8 *buf) |
| { |
| struct ipa_flt_rule_hw_hdr *hdr; |
| const struct ipa_flt_rule *rule = |
| (const struct ipa_flt_rule *)&entry->rule; |
| u16 en_rule = 0; |
| u32 tmp[IPA_RT_FLT_HW_RULE_BUF_SIZE/4]; |
| u8 *start; |
| |
| if (buf == NULL) { |
| memset(tmp, 0, IPA_RT_FLT_HW_RULE_BUF_SIZE); |
| buf = (u8 *)tmp; |
| } |
| |
| start = buf; |
| hdr = (struct ipa_flt_rule_hw_hdr *)buf; |
| hdr->u.hdr.action = entry->rule.action; |
| hdr->u.hdr.retain_hdr = entry->rule.retain_hdr; |
| hdr->u.hdr.to_uc = entry->rule.to_uc; |
| if (entry->rt_tbl) |
| hdr->u.hdr.rt_tbl_idx = entry->rt_tbl->idx; |
| else |
| hdr->u.hdr.rt_tbl_idx = entry->rule.rt_tbl_idx; |
| hdr->u.hdr.rsvd = 0; |
| buf += sizeof(struct ipa_flt_rule_hw_hdr); |
| |
| if (rule->eq_attrib_type) { |
| if (ipa_generate_hw_rule_from_eq(&rule->eq_attrib, &buf)) { |
| IPAERR("fail to generate hw rule\n"); |
| return -EPERM; |
| } |
| en_rule = rule->eq_attrib.rule_eq_bitmap; |
| } else { |
| if (ipa_generate_hw_rule(ip, &rule->attrib, &buf, &en_rule)) { |
| IPAERR("fail to generate hw rule\n"); |
| return -EPERM; |
| } |
| } |
| |
| IPADBG("en_rule 0x%x, action=%d, rt_idx=%d, uc=%d, retain_hdr=%d\n", |
| en_rule, |
| hdr->u.hdr.action, |
| hdr->u.hdr.rt_tbl_idx, |
| hdr->u.hdr.to_uc, |
| hdr->u.hdr.retain_hdr); |
| |
| hdr->u.hdr.en_rule = en_rule; |
| ipa_write_32(hdr->u.word, (u8 *)hdr); |
| |
| if (entry->hw_len == 0) { |
| entry->hw_len = buf - start; |
| } else if (entry->hw_len != (buf - start)) { |
| IPAERR("hw_len differs b/w passes passed=%x calc=%td\n", |
| entry->hw_len, (buf - start)); |
| return -EPERM; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ipa_get_flt_hw_tbl_size() - returns the size of HW filtering table |
| * @ip: the ip address family type |
| * @hdr_sz: header size |
| * |
| * Returns: size on success, negative on failure |
| * |
| * caller needs to hold any needed locks to ensure integrity |
| * |
| */ |
| static int ipa_get_flt_hw_tbl_size(enum ipa_ip_type ip, u32 *hdr_sz) |
| { |
| struct ipa_flt_tbl *tbl; |
| struct ipa_flt_entry *entry; |
| u32 total_sz = 0; |
| u32 rule_set_sz; |
| int i; |
| |
| *hdr_sz = 0; |
| tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| rule_set_sz = 0; |
| list_for_each_entry(entry, &tbl->head_flt_rule_list, link) { |
| if (ipa_generate_flt_hw_rule(ip, entry, NULL)) { |
| IPAERR("failed to find HW FLT rule size\n"); |
| return -EPERM; |
| } |
| IPADBG("glob ip %d len %d\n", ip, entry->hw_len); |
| rule_set_sz += entry->hw_len; |
| } |
| |
| if (rule_set_sz) { |
| tbl->sz = rule_set_sz + IPA_FLT_TABLE_WORD_SIZE; |
| /* this rule-set uses a word in header block */ |
| *hdr_sz += IPA_FLT_TABLE_WORD_SIZE; |
| if (!tbl->in_sys) { |
| /* add the terminator */ |
| total_sz += (rule_set_sz + IPA_FLT_TABLE_WORD_SIZE); |
| total_sz = (total_sz + |
| IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) & |
| ~IPA_FLT_ENTRY_MEMORY_ALLIGNMENT; |
| } |
| } |
| |
| for (i = 0; i < ipa_ctx->ipa_num_pipes; i++) { |
| tbl = &ipa_ctx->flt_tbl[i][ip]; |
| rule_set_sz = 0; |
| list_for_each_entry(entry, &tbl->head_flt_rule_list, link) { |
| if (ipa_generate_flt_hw_rule(ip, entry, NULL)) { |
| IPAERR("failed to find HW FLT rule size\n"); |
| return -EPERM; |
| } |
| IPADBG("pipe %d len %d\n", i, entry->hw_len); |
| rule_set_sz += entry->hw_len; |
| } |
| |
| if (rule_set_sz) { |
| tbl->sz = rule_set_sz + IPA_FLT_TABLE_WORD_SIZE; |
| /* this rule-set uses a word in header block */ |
| *hdr_sz += IPA_FLT_TABLE_WORD_SIZE; |
| if (!tbl->in_sys) { |
| /* add the terminator */ |
| total_sz += (rule_set_sz + |
| IPA_FLT_TABLE_WORD_SIZE); |
| total_sz = (total_sz + |
| IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) & |
| ~IPA_FLT_ENTRY_MEMORY_ALLIGNMENT; |
| } |
| } |
| } |
| |
| *hdr_sz += IPA_FLT_TABLE_WORD_SIZE; |
| total_sz += *hdr_sz; |
| IPADBG("FLT HW TBL SZ %d HDR SZ %d IP %d\n", total_sz, *hdr_sz, ip); |
| |
| return total_sz; |
| } |
| |
| static int ipa_generate_flt_hw_tbl_common(enum ipa_ip_type ip, u8 *base, |
| u8 *hdr, u32 body_start_offset, u8 *hdr2, u32 *hdr_top) |
| { |
| struct ipa_flt_tbl *tbl; |
| struct ipa_flt_entry *entry; |
| int i; |
| u32 offset; |
| u8 *body; |
| struct ipa_mem_buffer flt_tbl_mem; |
| u8 *ftbl_membody; |
| |
| *hdr_top = 0; |
| body = base; |
| |
| #define IPA_WRITE_FLT_HDR(idx, val) { \ |
| if (idx <= 5) { \ |
| *((u32 *)hdr + 1 + idx) = val; \ |
| } else if (idx >= 6 && idx <= 10) { \ |
| WARN_ON(1); \ |
| } else if (idx >= 11 && idx <= 19) { \ |
| *((u32 *)hdr2 + idx - 11) = val; \ |
| } else { \ |
| WARN_ON(1); \ |
| } \ |
| } |
| |
| tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| |
| if (!list_empty(&tbl->head_flt_rule_list)) { |
| *hdr_top |= IPA_FLT_BIT_MASK; |
| |
| if (!tbl->in_sys) { |
| offset = body - base + body_start_offset; |
| if (offset & IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) { |
| IPAERR("offset is not word multiple %d\n", |
| offset); |
| goto proc_err; |
| } |
| |
| offset &= ~IPA_FLT_ENTRY_MEMORY_ALLIGNMENT; |
| /* rule is at an offset from base */ |
| offset |= IPA_FLT_BIT_MASK; |
| |
| if (hdr2) |
| *(u32 *)hdr = offset; |
| else |
| hdr = ipa_write_32(offset, hdr); |
| |
| /* generate the rule-set */ |
| list_for_each_entry(entry, &tbl->head_flt_rule_list, |
| link) { |
| if (ipa_generate_flt_hw_rule(ip, entry, body)) { |
| IPAERR("failed to gen HW FLT rule\n"); |
| goto proc_err; |
| } |
| body += entry->hw_len; |
| } |
| |
| /* write the rule-set terminator */ |
| body = ipa_write_32(0, body); |
| if ((long)body & IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) |
| /* advance body to next word boundary */ |
| body = body + (IPA_FLT_TABLE_WORD_SIZE - |
| ((long)body & |
| IPA_FLT_ENTRY_MEMORY_ALLIGNMENT)); |
| } else { |
| if (tbl->sz == 0) { |
| IPAERR("tbl size is 0\n"); |
| WARN_ON(1); |
| goto proc_err; |
| } |
| |
| /* allocate memory for the flt tbl */ |
| flt_tbl_mem.size = tbl->sz; |
| flt_tbl_mem.base = |
| dma_alloc_coherent(ipa_ctx->pdev, flt_tbl_mem.size, |
| &flt_tbl_mem.phys_base, GFP_KERNEL); |
| if (!flt_tbl_mem.base) { |
| IPAERR("fail to alloc DMA buff of size %d\n", |
| flt_tbl_mem.size); |
| WARN_ON(1); |
| goto proc_err; |
| } |
| |
| WARN_ON(flt_tbl_mem.phys_base & |
| IPA_FLT_ENTRY_MEMORY_ALLIGNMENT); |
| ftbl_membody = flt_tbl_mem.base; |
| memset(flt_tbl_mem.base, 0, flt_tbl_mem.size); |
| |
| if (hdr2) |
| *(u32 *)hdr = flt_tbl_mem.phys_base; |
| else |
| hdr = ipa_write_32(flt_tbl_mem.phys_base, hdr); |
| |
| /* generate the rule-set */ |
| list_for_each_entry(entry, &tbl->head_flt_rule_list, |
| link) { |
| if (ipa_generate_flt_hw_rule(ip, entry, |
| ftbl_membody)) { |
| IPAERR("failed to gen HW FLT rule\n"); |
| WARN_ON(1); |
| } |
| ftbl_membody += entry->hw_len; |
| } |
| |
| /* write the rule-set terminator */ |
| ftbl_membody = ipa_write_32(0, ftbl_membody); |
| if (tbl->curr_mem.phys_base) { |
| WARN_ON(tbl->prev_mem.phys_base); |
| tbl->prev_mem = tbl->curr_mem; |
| } |
| tbl->curr_mem = flt_tbl_mem; |
| } |
| } |
| |
| for (i = 0; i < ipa_ctx->ipa_num_pipes; i++) { |
| tbl = &ipa_ctx->flt_tbl[i][ip]; |
| if (!list_empty(&tbl->head_flt_rule_list)) { |
| /* pipe "i" is at bit "i+1" */ |
| *hdr_top |= (1 << (i + 1)); |
| |
| if (!tbl->in_sys) { |
| offset = body - base + body_start_offset; |
| if (offset & IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) { |
| IPAERR("ofst is not word multiple %d\n", |
| offset); |
| goto proc_err; |
| } |
| offset &= ~IPA_FLT_ENTRY_MEMORY_ALLIGNMENT; |
| /* rule is at an offset from base */ |
| offset |= IPA_FLT_BIT_MASK; |
| |
| if (hdr2) |
| IPA_WRITE_FLT_HDR(i, offset) |
| else |
| hdr = ipa_write_32(offset, hdr); |
| |
| /* generate the rule-set */ |
| list_for_each_entry(entry, |
| &tbl->head_flt_rule_list, |
| link) { |
| if (ipa_generate_flt_hw_rule(ip, entry, |
| body)) { |
| IPAERR("fail gen FLT rule\n"); |
| goto proc_err; |
| } |
| body += entry->hw_len; |
| } |
| |
| /* write the rule-set terminator */ |
| body = ipa_write_32(0, body); |
| if ((long)body & |
| IPA_FLT_ENTRY_MEMORY_ALLIGNMENT) |
| /* advance body to next word boundary */ |
| body = body + (IPA_FLT_TABLE_WORD_SIZE - |
| ((long)body & |
| IPA_FLT_ENTRY_MEMORY_ALLIGNMENT)); |
| } else { |
| if (tbl->sz == 0) { |
| IPAERR("tbl size is 0\n"); |
| WARN_ON(1); |
| goto proc_err; |
| } |
| |
| /* allocate memory for the flt tbl */ |
| flt_tbl_mem.size = tbl->sz; |
| flt_tbl_mem.base = |
| dma_alloc_coherent(ipa_ctx->pdev, |
| flt_tbl_mem.size, |
| &flt_tbl_mem.phys_base, |
| GFP_KERNEL); |
| if (!flt_tbl_mem.base) { |
| IPAERR("fail alloc DMA buff size %d\n", |
| flt_tbl_mem.size); |
| WARN_ON(1); |
| goto proc_err; |
| } |
| |
| WARN_ON(flt_tbl_mem.phys_base & |
| IPA_FLT_ENTRY_MEMORY_ALLIGNMENT); |
| |
| ftbl_membody = flt_tbl_mem.base; |
| memset(flt_tbl_mem.base, 0, flt_tbl_mem.size); |
| |
| if (hdr2) |
| IPA_WRITE_FLT_HDR(i, |
| flt_tbl_mem.phys_base) |
| else |
| hdr = ipa_write_32( |
| flt_tbl_mem.phys_base, hdr); |
| |
| /* generate the rule-set */ |
| list_for_each_entry(entry, |
| &tbl->head_flt_rule_list, |
| link) { |
| if (ipa_generate_flt_hw_rule(ip, entry, |
| ftbl_membody)) { |
| IPAERR("fail gen FLT rule\n"); |
| WARN_ON(1); |
| } |
| ftbl_membody += entry->hw_len; |
| } |
| |
| /* write the rule-set terminator */ |
| ftbl_membody = |
| ipa_write_32(0, ftbl_membody); |
| if (tbl->curr_mem.phys_base) { |
| WARN_ON(tbl->prev_mem.phys_base); |
| tbl->prev_mem = tbl->curr_mem; |
| } |
| tbl->curr_mem = flt_tbl_mem; |
| } |
| } |
| } |
| |
| return 0; |
| |
| proc_err: |
| return -EPERM; |
| } |
| |
| |
| /** |
| * ipa_generate_flt_hw_tbl() - generates the filtering hardware table |
| * @ip: [in] the ip address family type |
| * @mem: [out] buffer to put the filtering table |
| * |
| * Returns: 0 on success, negative on failure |
| */ |
| static int ipa_generate_flt_hw_tbl_v1_1(enum ipa_ip_type ip, |
| struct ipa_mem_buffer *mem) |
| { |
| u32 hdr_top = 0; |
| u32 hdr_sz; |
| u8 *hdr; |
| u8 *body; |
| u8 *base; |
| int res; |
| |
| res = ipa_get_flt_hw_tbl_size(ip, &hdr_sz); |
| if (res < 0) { |
| IPAERR("ipa_get_flt_hw_tbl_size failed %d\n", res); |
| return res; |
| } |
| |
| mem->size = res; |
| mem->size = IPA_HW_TABLE_ALIGNMENT(mem->size); |
| |
| if (mem->size == 0) { |
| IPAERR("flt tbl empty ip=%d\n", ip); |
| goto error; |
| } |
| mem->base = dma_alloc_coherent(ipa_ctx->pdev, mem->size, |
| &mem->phys_base, GFP_KERNEL); |
| if (!mem->base) { |
| IPAERR("fail to alloc DMA buff of size %d\n", mem->size); |
| goto error; |
| } |
| |
| memset(mem->base, 0, mem->size); |
| |
| /* build the flt tbl in the DMA buffer to submit to IPA HW */ |
| base = hdr = (u8 *)mem->base; |
| body = base + hdr_sz; |
| |
| /* write a dummy header to move cursor */ |
| hdr = ipa_write_32(hdr_top, hdr); |
| |
| if (ipa_generate_flt_hw_tbl_common(ip, body, hdr, hdr_sz, 0, |
| &hdr_top)) { |
| IPAERR("fail to generate FLT HW table\n"); |
| goto proc_err; |
| } |
| |
| /* now write the hdr_top */ |
| ipa_write_32(hdr_top, base); |
| |
| IPA_DUMP_BUFF(mem->base, mem->phys_base, mem->size); |
| |
| return 0; |
| |
| proc_err: |
| dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, mem->phys_base); |
| error: |
| return -EPERM; |
| } |
| |
| static void __ipa_reap_sys_flt_tbls(enum ipa_ip_type ip) |
| { |
| struct ipa_flt_tbl *tbl; |
| int i; |
| |
| tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| if (tbl->prev_mem.phys_base) { |
| IPADBG("reaping glob flt tbl (prev) ip=%d\n", ip); |
| dma_free_coherent(ipa_ctx->pdev, tbl->prev_mem.size, |
| tbl->prev_mem.base, tbl->prev_mem.phys_base); |
| memset(&tbl->prev_mem, 0, sizeof(tbl->prev_mem)); |
| } |
| |
| if (list_empty(&tbl->head_flt_rule_list)) { |
| if (tbl->curr_mem.phys_base) { |
| IPADBG("reaping glob flt tbl (curr) ip=%d\n", ip); |
| dma_free_coherent(ipa_ctx->pdev, tbl->curr_mem.size, |
| tbl->curr_mem.base, |
| tbl->curr_mem.phys_base); |
| memset(&tbl->curr_mem, 0, sizeof(tbl->curr_mem)); |
| } |
| } |
| |
| for (i = 0; i < ipa_ctx->ipa_num_pipes; i++) { |
| tbl = &ipa_ctx->flt_tbl[i][ip]; |
| if (tbl->prev_mem.phys_base) { |
| IPADBG("reaping flt tbl (prev) pipe=%d ip=%d\n", i, ip); |
| dma_free_coherent(ipa_ctx->pdev, tbl->prev_mem.size, |
| tbl->prev_mem.base, |
| tbl->prev_mem.phys_base); |
| memset(&tbl->prev_mem, 0, sizeof(tbl->prev_mem)); |
| } |
| |
| if (list_empty(&tbl->head_flt_rule_list)) { |
| if (tbl->curr_mem.phys_base) { |
| IPADBG("reaping flt tbl (curr) pipe=%d ip=%d\n", |
| i, ip); |
| dma_free_coherent(ipa_ctx->pdev, |
| tbl->curr_mem.size, |
| tbl->curr_mem.base, |
| tbl->curr_mem.phys_base); |
| memset(&tbl->curr_mem, 0, |
| sizeof(tbl->curr_mem)); |
| } |
| } |
| } |
| } |
| |
| int __ipa_commit_flt_v1_1(enum ipa_ip_type ip) |
| { |
| struct ipa_desc desc = { 0 }; |
| struct ipa_mem_buffer *mem; |
| void *cmd; |
| struct ipa_ip_v4_filter_init *v4; |
| struct ipa_ip_v6_filter_init *v6; |
| u16 avail; |
| u16 size; |
| |
| mem = kmalloc(sizeof(struct ipa_mem_buffer), GFP_KERNEL); |
| if (!mem) { |
| IPAERR("failed to alloc memory object\n"); |
| goto fail_alloc_mem; |
| } |
| |
| if (ip == IPA_IP_v4) { |
| avail = ipa_ctx->ip4_flt_tbl_lcl ? IPA_MEM_v1_RAM_V4_FLT_SIZE : |
| IPA_MEM_PART(v4_flt_size_ddr); |
| size = sizeof(struct ipa_ip_v4_filter_init); |
| } else { |
| avail = ipa_ctx->ip6_flt_tbl_lcl ? IPA_MEM_v1_RAM_V6_FLT_SIZE : |
| IPA_MEM_PART(v6_flt_size_ddr); |
| size = sizeof(struct ipa_ip_v6_filter_init); |
| } |
| cmd = kmalloc(size, GFP_KERNEL); |
| if (!cmd) { |
| IPAERR("failed to alloc immediate command object\n"); |
| goto fail_alloc_cmd; |
| } |
| |
| if (ipa_generate_flt_hw_tbl_v1_1(ip, mem)) { |
| IPAERR("fail to generate FLT HW TBL ip %d\n", ip); |
| goto fail_hw_tbl_gen; |
| } |
| |
| if (mem->size > avail) { |
| IPAERR("tbl too big, needed %d avail %d\n", mem->size, avail); |
| goto fail_send_cmd; |
| } |
| |
| if (ip == IPA_IP_v4) { |
| v4 = (struct ipa_ip_v4_filter_init *)cmd; |
| desc.opcode = IPA_IP_V4_FILTER_INIT; |
| v4->ipv4_rules_addr = mem->phys_base; |
| v4->size_ipv4_rules = mem->size; |
| v4->ipv4_addr = IPA_MEM_v1_RAM_V4_FLT_OFST; |
| } else { |
| v6 = (struct ipa_ip_v6_filter_init *)cmd; |
| desc.opcode = IPA_IP_V6_FILTER_INIT; |
| v6->ipv6_rules_addr = mem->phys_base; |
| v6->size_ipv6_rules = mem->size; |
| v6->ipv6_addr = IPA_MEM_v1_RAM_V6_FLT_OFST; |
| } |
| |
| desc.pyld = cmd; |
| desc.len = size; |
| desc.type = IPA_IMM_CMD_DESC; |
| IPA_DUMP_BUFF(mem->base, mem->phys_base, mem->size); |
| |
| if (ipa_send_cmd(1, &desc)) { |
| IPAERR("fail to send immediate command\n"); |
| goto fail_send_cmd; |
| } |
| |
| __ipa_reap_sys_flt_tbls(ip); |
| dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, mem->phys_base); |
| kfree(cmd); |
| kfree(mem); |
| |
| return 0; |
| |
| fail_send_cmd: |
| if (mem->phys_base) |
| dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, |
| mem->phys_base); |
| fail_hw_tbl_gen: |
| kfree(cmd); |
| fail_alloc_cmd: |
| kfree(mem); |
| fail_alloc_mem: |
| |
| return -EPERM; |
| } |
| |
| static int ipa_generate_flt_hw_tbl_v2(enum ipa_ip_type ip, |
| struct ipa_mem_buffer *mem, struct ipa_mem_buffer *head1, |
| struct ipa_mem_buffer *head2) |
| { |
| int i; |
| u32 hdr_sz; |
| int num_words; |
| u32 *entr; |
| u32 body_start_offset; |
| u32 hdr_top; |
| int res; |
| |
| if (ip == IPA_IP_v4) |
| body_start_offset = IPA_MEM_PART(apps_v4_flt_ofst) - |
| IPA_MEM_PART(v4_flt_ofst); |
| else |
| body_start_offset = IPA_MEM_PART(apps_v6_flt_ofst) - |
| IPA_MEM_PART(v6_flt_ofst); |
| |
| num_words = 7; |
| head1->size = num_words * 4; |
| head1->base = dma_alloc_coherent(ipa_ctx->pdev, head1->size, |
| &head1->phys_base, GFP_KERNEL); |
| if (!head1->base) { |
| IPAERR("fail to alloc DMA buff of size %d\n", head1->size); |
| goto err; |
| } |
| entr = (u32 *)head1->base; |
| for (i = 0; i < num_words; i++) { |
| *entr = ipa_ctx->empty_rt_tbl_mem.phys_base; |
| entr++; |
| } |
| |
| num_words = 9; |
| head2->size = num_words * 4; |
| head2->base = dma_alloc_coherent(ipa_ctx->pdev, head2->size, |
| &head2->phys_base, GFP_KERNEL); |
| if (!head2->base) { |
| IPAERR("fail to alloc DMA buff of size %d\n", head2->size); |
| goto head_err; |
| } |
| entr = (u32 *)head2->base; |
| for (i = 0; i < num_words; i++) { |
| *entr = ipa_ctx->empty_rt_tbl_mem.phys_base; |
| entr++; |
| } |
| |
| res = ipa_get_flt_hw_tbl_size(ip, &hdr_sz); |
| if (res < 0) { |
| IPAERR("ipa_get_flt_hw_tbl_size failed %d\n", res); |
| goto body_err; |
| } |
| |
| mem->size = res; |
| mem->size -= hdr_sz; |
| mem->size = IPA_HW_TABLE_ALIGNMENT(mem->size); |
| |
| if (mem->size) { |
| mem->base = dma_alloc_coherent(ipa_ctx->pdev, mem->size, |
| &mem->phys_base, GFP_KERNEL); |
| if (!mem->base) { |
| IPAERR("fail to alloc DMA buff of size %d\n", |
| mem->size); |
| goto body_err; |
| } |
| memset(mem->base, 0, mem->size); |
| } |
| |
| if (ipa_generate_flt_hw_tbl_common(ip, mem->base, head1->base, |
| body_start_offset, head2->base, &hdr_top)) { |
| IPAERR("fail to generate FLT HW table\n"); |
| goto proc_err; |
| } |
| |
| IPADBG("HEAD1\n"); |
| IPA_DUMP_BUFF(head1->base, head1->phys_base, head1->size); |
| IPADBG("HEAD2\n"); |
| IPA_DUMP_BUFF(head2->base, head2->phys_base, head2->size); |
| if (mem->size) { |
| IPADBG("BODY\n"); |
| IPA_DUMP_BUFF(mem->base, mem->phys_base, mem->size); |
| } |
| |
| return 0; |
| |
| proc_err: |
| if (mem->size) |
| dma_free_coherent(ipa_ctx->pdev, mem->size, mem->base, |
| mem->phys_base); |
| body_err: |
| dma_free_coherent(ipa_ctx->pdev, head2->size, head2->base, |
| head2->phys_base); |
| head_err: |
| dma_free_coherent(ipa_ctx->pdev, head1->size, head1->base, |
| head1->phys_base); |
| err: |
| return -EPERM; |
| } |
| |
| int __ipa_commit_flt_v2(enum ipa_ip_type ip) |
| { |
| struct ipa_desc *desc; |
| struct ipa_hw_imm_cmd_dma_shared_mem *cmd; |
| struct ipa_mem_buffer body; |
| struct ipa_mem_buffer head1; |
| struct ipa_mem_buffer head2; |
| int rc = 0; |
| u32 local_addrb; |
| u32 local_addrh; |
| bool lcl; |
| int num_desc = 0; |
| int i; |
| u16 avail; |
| |
| desc = kzalloc(16 * sizeof(*desc), GFP_ATOMIC); |
| if (desc == NULL) { |
| IPAERR("fail to alloc desc blob ip %d\n", ip); |
| rc = -ENOMEM; |
| goto fail_desc; |
| } |
| |
| cmd = kzalloc(16 * sizeof(*cmd), GFP_ATOMIC); |
| if (cmd == NULL) { |
| IPAERR("fail to alloc cmd blob ip %d\n", ip); |
| rc = -ENOMEM; |
| goto fail_imm; |
| } |
| |
| if (ip == IPA_IP_v4) { |
| avail = ipa_ctx->ip4_flt_tbl_lcl ? |
| IPA_MEM_PART(apps_v4_flt_size) : |
| IPA_MEM_PART(v4_flt_size_ddr); |
| local_addrh = ipa_ctx->smem_restricted_bytes + |
| IPA_MEM_PART(v4_flt_ofst) + 4; |
| local_addrb = ipa_ctx->smem_restricted_bytes + |
| IPA_MEM_PART(apps_v4_flt_ofst); |
| lcl = ipa_ctx->ip4_flt_tbl_lcl; |
| } else { |
| avail = ipa_ctx->ip6_flt_tbl_lcl ? |
| IPA_MEM_PART(apps_v6_flt_size) : |
| IPA_MEM_PART(v6_flt_size_ddr); |
| local_addrh = ipa_ctx->smem_restricted_bytes + |
| IPA_MEM_PART(v6_flt_ofst) + 4; |
| local_addrb = ipa_ctx->smem_restricted_bytes + |
| IPA_MEM_PART(apps_v6_flt_ofst); |
| lcl = ipa_ctx->ip6_flt_tbl_lcl; |
| } |
| |
| if (ipa_generate_flt_hw_tbl_v2(ip, &body, &head1, &head2)) { |
| IPAERR("fail to generate FLT HW TBL ip %d\n", ip); |
| rc = -EFAULT; |
| goto fail_gen; |
| } |
| |
| if (body.size > avail) { |
| IPAERR("tbl too big, needed %d avail %d\n", body.size, avail); |
| goto fail_send_cmd; |
| } |
| |
| cmd[num_desc].size = 4; |
| cmd[num_desc].system_addr = head1.phys_base; |
| cmd[num_desc].local_addr = local_addrh; |
| |
| desc[num_desc].opcode = IPA_DMA_SHARED_MEM; |
| desc[num_desc].pyld = &cmd[num_desc]; |
| desc[num_desc].len = sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| desc[num_desc++].type = IPA_IMM_CMD_DESC; |
| |
| for (i = 0; i < 6; i++) { |
| if (ipa_ctx->skip_ep_cfg_shadow[i]) { |
| IPADBG("skip %d\n", i); |
| continue; |
| } |
| |
| if (ipa2_get_ep_mapping(IPA_CLIENT_APPS_WAN_CONS) == i || |
| ipa2_get_ep_mapping(IPA_CLIENT_APPS_LAN_CONS) == i || |
| ipa2_get_ep_mapping(IPA_CLIENT_APPS_CMD_PROD) == i || |
| (ipa2_get_ep_mapping(IPA_CLIENT_APPS_LAN_WAN_PROD) == i |
| && ipa_ctx->modem_cfg_emb_pipe_flt)) { |
| IPADBG("skip %d\n", i); |
| continue; |
| } |
| |
| if (ip == IPA_IP_v4) { |
| local_addrh = ipa_ctx->smem_restricted_bytes + |
| IPA_MEM_PART(v4_flt_ofst) + |
| 8 + i * 4; |
| } else { |
| local_addrh = ipa_ctx->smem_restricted_bytes + |
| IPA_MEM_PART(v6_flt_ofst) + |
| 8 + i * 4; |
| } |
| cmd[num_desc].size = 4; |
| cmd[num_desc].system_addr = head1.phys_base + 4 + i * 4; |
| cmd[num_desc].local_addr = local_addrh; |
| |
| desc[num_desc].opcode = IPA_DMA_SHARED_MEM; |
| desc[num_desc].pyld = &cmd[num_desc]; |
| desc[num_desc].len = |
| sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| desc[num_desc++].type = IPA_IMM_CMD_DESC; |
| } |
| |
| for (i = 11; i < ipa_ctx->ipa_num_pipes; i++) { |
| if (ipa_ctx->skip_ep_cfg_shadow[i]) { |
| IPADBG("skip %d\n", i); |
| continue; |
| } |
| if (ipa2_get_ep_mapping(IPA_CLIENT_APPS_LAN_WAN_PROD) == i && |
| ipa_ctx->modem_cfg_emb_pipe_flt) { |
| IPADBG("skip %d\n", i); |
| continue; |
| } |
| if (ip == IPA_IP_v4) { |
| local_addrh = ipa_ctx->smem_restricted_bytes + |
| IPA_MEM_PART(v4_flt_ofst) + |
| 13 * 4 + (i - 11) * 4; |
| } else { |
| local_addrh = ipa_ctx->smem_restricted_bytes + |
| IPA_MEM_PART(v6_flt_ofst) + |
| 13 * 4 + (i - 11) * 4; |
| } |
| cmd[num_desc].size = 4; |
| cmd[num_desc].system_addr = head2.phys_base + (i - 11) * 4; |
| cmd[num_desc].local_addr = local_addrh; |
| |
| desc[num_desc].opcode = IPA_DMA_SHARED_MEM; |
| desc[num_desc].pyld = &cmd[num_desc]; |
| desc[num_desc].len = |
| sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| desc[num_desc++].type = IPA_IMM_CMD_DESC; |
| } |
| |
| if (lcl) { |
| cmd[num_desc].size = body.size; |
| cmd[num_desc].system_addr = body.phys_base; |
| cmd[num_desc].local_addr = local_addrb; |
| |
| desc[num_desc].opcode = IPA_DMA_SHARED_MEM; |
| desc[num_desc].pyld = &cmd[num_desc]; |
| desc[num_desc].len = |
| sizeof(struct ipa_hw_imm_cmd_dma_shared_mem); |
| desc[num_desc++].type = IPA_IMM_CMD_DESC; |
| |
| if (ipa_send_cmd(num_desc, desc)) { |
| IPAERR("fail to send immediate command\n"); |
| rc = -EFAULT; |
| goto fail_send_cmd; |
| } |
| } else { |
| if (ipa_send_cmd(num_desc, desc)) { |
| IPAERR("fail to send immediate command\n"); |
| rc = -EFAULT; |
| goto fail_send_cmd; |
| } |
| } |
| |
| __ipa_reap_sys_flt_tbls(ip); |
| |
| fail_send_cmd: |
| if (body.size) |
| dma_free_coherent(ipa_ctx->pdev, body.size, body.base, |
| body.phys_base); |
| dma_free_coherent(ipa_ctx->pdev, head1.size, head1.base, |
| head1.phys_base); |
| dma_free_coherent(ipa_ctx->pdev, head2.size, head2.base, |
| head2.phys_base); |
| fail_gen: |
| kfree(cmd); |
| fail_imm: |
| kfree(desc); |
| fail_desc: |
| return rc; |
| } |
| |
| static int __ipa_add_flt_rule(struct ipa_flt_tbl *tbl, enum ipa_ip_type ip, |
| const struct ipa_flt_rule *rule, u8 add_rear, |
| u32 *rule_hdl) |
| { |
| struct ipa_flt_entry *entry; |
| struct ipa_rt_tbl *rt_tbl = NULL; |
| int id; |
| |
| if (rule->action != IPA_PASS_TO_EXCEPTION) { |
| if (!rule->eq_attrib_type) { |
| if (!rule->rt_tbl_hdl) { |
| IPAERR("invalid RT tbl\n"); |
| goto error; |
| } |
| |
| rt_tbl = ipa_id_find(rule->rt_tbl_hdl); |
| if (rt_tbl == NULL) { |
| IPAERR("RT tbl not found\n"); |
| goto error; |
| } |
| |
| if (rt_tbl->cookie != IPA_COOKIE) { |
| IPAERR("RT table cookie is invalid\n"); |
| goto error; |
| } |
| } else { |
| if (rule->rt_tbl_idx > ((ip == IPA_IP_v4) ? |
| IPA_MEM_PART(v4_modem_rt_index_hi) : |
| IPA_MEM_PART(v6_modem_rt_index_hi))) { |
| IPAERR("invalid RT tbl\n"); |
| goto error; |
| } |
| } |
| } |
| |
| entry = kmem_cache_zalloc(ipa_ctx->flt_rule_cache, GFP_KERNEL); |
| if (!entry) { |
| IPAERR("failed to alloc FLT rule object\n"); |
| goto error; |
| } |
| INIT_LIST_HEAD(&entry->link); |
| entry->rule = *rule; |
| entry->cookie = IPA_COOKIE; |
| entry->rt_tbl = rt_tbl; |
| entry->tbl = tbl; |
| if (add_rear) { |
| if (tbl->sticky_rear) |
| list_add_tail(&entry->link, |
| tbl->head_flt_rule_list.prev); |
| else |
| list_add_tail(&entry->link, &tbl->head_flt_rule_list); |
| } else { |
| list_add(&entry->link, &tbl->head_flt_rule_list); |
| } |
| tbl->rule_cnt++; |
| if (entry->rt_tbl) |
| entry->rt_tbl->ref_cnt++; |
| id = ipa_id_alloc(entry); |
| if (id < 0) { |
| IPAERR("failed to add to tree\n"); |
| WARN_ON(1); |
| } |
| *rule_hdl = id; |
| entry->id = id; |
| IPADBG("add flt rule rule_cnt=%d\n", tbl->rule_cnt); |
| |
| return 0; |
| |
| error: |
| return -EPERM; |
| } |
| |
| static int __ipa_del_flt_rule(u32 rule_hdl) |
| { |
| struct ipa_flt_entry *entry; |
| int id; |
| |
| entry = ipa_id_find(rule_hdl); |
| if (entry == NULL) { |
| IPAERR("lookup failed\n"); |
| return -EINVAL; |
| } |
| |
| if (entry->cookie != IPA_COOKIE) { |
| IPAERR("bad params\n"); |
| return -EINVAL; |
| } |
| id = entry->id; |
| |
| list_del(&entry->link); |
| entry->tbl->rule_cnt--; |
| if (entry->rt_tbl) |
| entry->rt_tbl->ref_cnt--; |
| IPADBG("del flt rule rule_cnt=%d\n", entry->tbl->rule_cnt); |
| entry->cookie = 0; |
| kmem_cache_free(ipa_ctx->flt_rule_cache, entry); |
| |
| /* remove the handle from the database */ |
| ipa_id_remove(id); |
| |
| return 0; |
| } |
| |
| static int __ipa_mdfy_flt_rule(struct ipa_flt_rule_mdfy *frule, |
| enum ipa_ip_type ip) |
| { |
| struct ipa_flt_entry *entry; |
| struct ipa_rt_tbl *rt_tbl = NULL; |
| |
| entry = ipa_id_find(frule->rule_hdl); |
| if (entry == NULL) { |
| IPAERR("lookup failed\n"); |
| goto error; |
| } |
| |
| if (entry->cookie != IPA_COOKIE) { |
| IPAERR("bad params\n"); |
| goto error; |
| } |
| |
| if (entry->rt_tbl) |
| entry->rt_tbl->ref_cnt--; |
| |
| if (frule->rule.action != IPA_PASS_TO_EXCEPTION) { |
| if (!frule->rule.eq_attrib_type) { |
| if (!frule->rule.rt_tbl_hdl) { |
| IPAERR("invalid RT tbl\n"); |
| goto error; |
| } |
| |
| rt_tbl = ipa_id_find(frule->rule.rt_tbl_hdl); |
| if (rt_tbl == NULL) { |
| IPAERR("RT tbl not found\n"); |
| goto error; |
| } |
| |
| if (rt_tbl->cookie != IPA_COOKIE) { |
| IPAERR("RT table cookie is invalid\n"); |
| goto error; |
| } |
| } else { |
| if (frule->rule.rt_tbl_idx > ((ip == IPA_IP_v4) ? |
| IPA_MEM_PART(v4_modem_rt_index_hi) : |
| IPA_MEM_PART(v6_modem_rt_index_hi))) { |
| IPAERR("invalid RT tbl\n"); |
| goto error; |
| } |
| } |
| } |
| |
| entry->rule = frule->rule; |
| entry->rt_tbl = rt_tbl; |
| if (entry->rt_tbl) |
| entry->rt_tbl->ref_cnt++; |
| entry->hw_len = 0; |
| |
| return 0; |
| |
| error: |
| return -EPERM; |
| } |
| |
| static int __ipa_add_global_flt_rule(enum ipa_ip_type ip, |
| const struct ipa_flt_rule *rule, u8 add_rear, u32 *rule_hdl) |
| { |
| struct ipa_flt_tbl *tbl; |
| |
| if (rule == NULL || rule_hdl == NULL) { |
| IPAERR("bad parms rule=%p rule_hdl=%p\n", rule, rule_hdl); |
| |
| return -EINVAL; |
| } |
| |
| tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| IPADBG("add global flt rule ip=%d\n", ip); |
| |
| return __ipa_add_flt_rule(tbl, ip, rule, add_rear, rule_hdl); |
| } |
| |
| static int __ipa_add_ep_flt_rule(enum ipa_ip_type ip, enum ipa_client_type ep, |
| const struct ipa_flt_rule *rule, u8 add_rear, |
| u32 *rule_hdl) |
| { |
| struct ipa_flt_tbl *tbl; |
| int ipa_ep_idx; |
| |
| if (rule == NULL || rule_hdl == NULL || ep >= IPA_CLIENT_MAX) { |
| IPAERR("bad parms rule=%p rule_hdl=%p ep=%d\n", rule, |
| rule_hdl, ep); |
| |
| return -EINVAL; |
| } |
| ipa_ep_idx = ipa2_get_ep_mapping(ep); |
| if (ipa_ep_idx == IPA_FLT_TABLE_INDEX_NOT_FOUND) { |
| IPAERR("ep not valid ep=%d\n", ep); |
| return -EINVAL; |
| } |
| if (ipa_ctx->ep[ipa_ep_idx].valid == 0) |
| IPADBG("ep not connected ep_idx=%d\n", ipa_ep_idx); |
| |
| tbl = &ipa_ctx->flt_tbl[ipa_ep_idx][ip]; |
| IPADBG("add ep flt rule ip=%d ep=%d\n", ip, ep); |
| |
| return __ipa_add_flt_rule(tbl, ip, rule, add_rear, rule_hdl); |
| } |
| |
| /** |
| * ipa2_add_flt_rule() - Add the specified filtering rules to SW and optionally |
| * commit to IPA HW |
| * |
| * Returns: 0 on success, negative on failure |
| * |
| * Note: Should not be called from atomic context |
| */ |
| int ipa2_add_flt_rule(struct ipa_ioc_add_flt_rule *rules) |
| { |
| int i; |
| int result; |
| |
| if (rules == NULL || rules->num_rules == 0 || |
| rules->ip >= IPA_IP_MAX) { |
| IPAERR("bad parm\n"); |
| |
| return -EINVAL; |
| } |
| |
| mutex_lock(&ipa_ctx->lock); |
| for (i = 0; i < rules->num_rules; i++) { |
| if (rules->global) |
| result = __ipa_add_global_flt_rule(rules->ip, |
| &rules->rules[i].rule, |
| rules->rules[i].at_rear, |
| &rules->rules[i].flt_rule_hdl); |
| else |
| result = __ipa_add_ep_flt_rule(rules->ip, rules->ep, |
| &rules->rules[i].rule, |
| rules->rules[i].at_rear, |
| &rules->rules[i].flt_rule_hdl); |
| if (result) { |
| IPAERR("failed to add flt rule %d\n", i); |
| rules->rules[i].status = IPA_FLT_STATUS_OF_ADD_FAILED; |
| } else { |
| rules->rules[i].status = 0; |
| } |
| } |
| |
| if (rules->commit) |
| if (ipa_ctx->ctrl->ipa_commit_flt(rules->ip)) { |
| result = -EPERM; |
| goto bail; |
| } |
| result = 0; |
| bail: |
| mutex_unlock(&ipa_ctx->lock); |
| |
| return result; |
| } |
| |
| /** |
| * ipa2_del_flt_rule() - Remove the specified filtering rules from SW and |
| * optionally commit to IPA HW |
| * |
| * Returns: 0 on success, negative on failure |
| * |
| * Note: Should not be called from atomic context |
| */ |
| int ipa2_del_flt_rule(struct ipa_ioc_del_flt_rule *hdls) |
| { |
| int i; |
| int result; |
| |
| if (hdls == NULL || hdls->num_hdls == 0 || hdls->ip >= IPA_IP_MAX) { |
| IPAERR("bad parm\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&ipa_ctx->lock); |
| for (i = 0; i < hdls->num_hdls; i++) { |
| if (__ipa_del_flt_rule(hdls->hdl[i].hdl)) { |
| IPAERR("failed to del rt rule %i\n", i); |
| hdls->hdl[i].status = IPA_FLT_STATUS_OF_DEL_FAILED; |
| } else { |
| hdls->hdl[i].status = 0; |
| } |
| } |
| |
| if (hdls->commit) |
| if (ipa_ctx->ctrl->ipa_commit_flt(hdls->ip)) { |
| result = -EPERM; |
| goto bail; |
| } |
| result = 0; |
| bail: |
| mutex_unlock(&ipa_ctx->lock); |
| |
| return result; |
| } |
| |
| /** |
| * ipa2_mdfy_flt_rule() - Modify the specified filtering rules in SW and |
| * optionally commit to IPA HW |
| * |
| * Returns: 0 on success, negative on failure |
| * |
| * Note: Should not be called from atomic context |
| */ |
| int ipa2_mdfy_flt_rule(struct ipa_ioc_mdfy_flt_rule *hdls) |
| { |
| int i; |
| int result; |
| |
| if (hdls == NULL || hdls->num_rules == 0 || hdls->ip >= IPA_IP_MAX) { |
| IPAERR("bad parm\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&ipa_ctx->lock); |
| for (i = 0; i < hdls->num_rules; i++) { |
| if (__ipa_mdfy_flt_rule(&hdls->rules[i], hdls->ip)) { |
| IPAERR("failed to mdfy rt rule %i\n", i); |
| hdls->rules[i].status = IPA_FLT_STATUS_OF_MDFY_FAILED; |
| } else { |
| hdls->rules[i].status = 0; |
| } |
| } |
| |
| if (hdls->commit) |
| if (ipa_ctx->ctrl->ipa_commit_flt(hdls->ip)) { |
| result = -EPERM; |
| goto bail; |
| } |
| result = 0; |
| bail: |
| mutex_unlock(&ipa_ctx->lock); |
| |
| return result; |
| } |
| |
| |
| /** |
| * ipa2_commit_flt() - Commit the current SW filtering table of specified type |
| * to IPA HW |
| * @ip: [in] the family of routing tables |
| * |
| * Returns: 0 on success, negative on failure |
| * |
| * Note: Should not be called from atomic context |
| */ |
| int ipa2_commit_flt(enum ipa_ip_type ip) |
| { |
| int result; |
| |
| if (ip >= IPA_IP_MAX) { |
| IPAERR("bad parm\n"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&ipa_ctx->lock); |
| |
| if (ipa_ctx->ctrl->ipa_commit_flt(ip)) { |
| result = -EPERM; |
| goto bail; |
| } |
| result = 0; |
| |
| bail: |
| mutex_unlock(&ipa_ctx->lock); |
| |
| return result; |
| } |
| |
| /** |
| * ipa2_reset_flt() - Reset the current SW filtering table of specified type |
| * (does not commit to HW) |
| * @ip: [in] the family of routing tables |
| * |
| * Returns: 0 on success, negative on failure |
| * |
| * Note: Should not be called from atomic context |
| */ |
| int ipa2_reset_flt(enum ipa_ip_type ip) |
| { |
| struct ipa_flt_tbl *tbl; |
| struct ipa_flt_entry *entry; |
| struct ipa_flt_entry *next; |
| int i; |
| int id; |
| |
| if (ip >= IPA_IP_MAX) { |
| IPAERR("bad parm\n"); |
| return -EINVAL; |
| } |
| |
| tbl = &ipa_ctx->glob_flt_tbl[ip]; |
| mutex_lock(&ipa_ctx->lock); |
| IPADBG("reset flt ip=%d\n", ip); |
| list_for_each_entry_safe(entry, next, &tbl->head_flt_rule_list, link) { |
| if (ipa_id_find(entry->id) == NULL) { |
| WARN_ON(1); |
| mutex_unlock(&ipa_ctx->lock); |
| return -EFAULT; |
| } |
| |
| if ((ip == IPA_IP_v4 && |
| entry->rule.attrib.attrib_mask == IPA_FLT_PROTOCOL && |
| entry->rule.attrib.u.v4.protocol == |
| IPA_INVALID_L4_PROTOCOL) || |
| (ip == IPA_IP_v6 && |
| entry->rule.attrib.attrib_mask == IPA_FLT_NEXT_HDR && |
| entry->rule.attrib.u.v6.next_hdr == |
| IPA_INVALID_L4_PROTOCOL)) |
| continue; |
| |
| list_del(&entry->link); |
| entry->tbl->rule_cnt--; |
| if (entry->rt_tbl) |
| entry->rt_tbl->ref_cnt--; |
| entry->cookie = 0; |
| id = entry->id; |
| kmem_cache_free(ipa_ctx->flt_rule_cache, entry); |
| |
| /* remove the handle from the database */ |
| ipa_id_remove(id); |
| } |
| |
| for (i = 0; i < ipa_ctx->ipa_num_pipes; i++) { |
| tbl = &ipa_ctx->flt_tbl[i][ip]; |
| list_for_each_entry_safe(entry, next, &tbl->head_flt_rule_list, |
| link) { |
| if (ipa_id_find(entry->id) == NULL) { |
| WARN_ON(1); |
| mutex_unlock(&ipa_ctx->lock); |
| return -EFAULT; |
| } |
| list_del(&entry->link); |
| entry->tbl->rule_cnt--; |
| if (entry->rt_tbl) |
| entry->rt_tbl->ref_cnt--; |
| entry->cookie = 0; |
| id = entry->id; |
| kmem_cache_free(ipa_ctx->flt_rule_cache, entry); |
| |
| /* remove the handle from the database */ |
| ipa_id_remove(id); |
| } |
| } |
| mutex_unlock(&ipa_ctx->lock); |
| |
| return 0; |
| } |
| |
| void ipa_install_dflt_flt_rules(u32 ipa_ep_idx) |
| { |
| struct ipa_flt_tbl *tbl; |
| struct ipa_ep_context *ep = &ipa_ctx->ep[ipa_ep_idx]; |
| struct ipa_flt_rule rule; |
| |
| memset(&rule, 0, sizeof(rule)); |
| |
| mutex_lock(&ipa_ctx->lock); |
| tbl = &ipa_ctx->flt_tbl[ipa_ep_idx][IPA_IP_v4]; |
| rule.action = IPA_PASS_TO_EXCEPTION; |
| __ipa_add_flt_rule(tbl, IPA_IP_v4, &rule, true, |
| &ep->dflt_flt4_rule_hdl); |
| ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v4); |
| tbl->sticky_rear = true; |
| |
| tbl = &ipa_ctx->flt_tbl[ipa_ep_idx][IPA_IP_v6]; |
| rule.action = IPA_PASS_TO_EXCEPTION; |
| __ipa_add_flt_rule(tbl, IPA_IP_v6, &rule, true, |
| &ep->dflt_flt6_rule_hdl); |
| ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v6); |
| tbl->sticky_rear = true; |
| mutex_unlock(&ipa_ctx->lock); |
| } |
| |
| void ipa_delete_dflt_flt_rules(u32 ipa_ep_idx) |
| { |
| struct ipa_ep_context *ep = &ipa_ctx->ep[ipa_ep_idx]; |
| |
| mutex_lock(&ipa_ctx->lock); |
| if (ep->dflt_flt4_rule_hdl) { |
| __ipa_del_flt_rule(ep->dflt_flt4_rule_hdl); |
| ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v4); |
| ep->dflt_flt4_rule_hdl = 0; |
| } |
| if (ep->dflt_flt6_rule_hdl) { |
| __ipa_del_flt_rule(ep->dflt_flt6_rule_hdl); |
| ipa_ctx->ctrl->ipa_commit_flt(IPA_IP_v6); |
| ep->dflt_flt6_rule_hdl = 0; |
| } |
| mutex_unlock(&ipa_ctx->lock); |
| } |