1 /* 2 Copyright (c) 2013, The Linux Foundation. All rights reserved. 3 4 Redistribution and use in source and binary forms, with or without 5 modification, are permitted provided that the following conditions are 6 met: 7 * Redistributions of source code must retain the above copyright 8 notice, this list of conditions and the following disclaimer. 9 * Redistributions in binary form must reproduce the above 10 copyright notice, this list of conditions and the following 11 disclaimer in the documentation and/or other materials provided 12 with the distribution. 13 * Neither the name of The Linux Foundation nor the names of its 14 contributors may be used to endorse or promote products derived 15 from this software without specific prior written permission. 16 17 THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "ipa_nat_drv.h" 31 #include "ipa_nat_drvi.h" 32 33 /** 34 * ipa_nat_add_ipv4_tbl() - create ipv4 nat table 35 * @public_ip_addr: [in] public ipv4 address 36 * @number_of_entries: [in] number of nat entries 37 * @table_handle: [out] Handle of new ipv4 nat table 38 * 39 * To create new ipv4 nat table 40 * 41 * Returns: 0 On Success, negative on failure 42 */ 43 int ipa_nat_add_ipv4_tbl(uint32_t public_ip_addr, 44 uint16_t number_of_entries, 45 uint32_t *tbl_hdl) 46 { 47 int ret; 48 49 if (NULL == tbl_hdl || 0 == number_of_entries) { 50 IPAERR("Invalid parameters \n"); 51 return -EINVAL; 52 } 53 54 ret = ipa_nati_add_ipv4_tbl(public_ip_addr, 55 number_of_entries, 56 tbl_hdl); 57 if (ret != 0) { 58 IPAERR("unable to add table \n"); 59 return -EINVAL; 60 } 61 IPADBG("Returning table handle 0x%x\n", *tbl_hdl); 62 63 return ret; 64 } /* __ipa_nat_add_ipv4_tbl() */ 65 66 /** 67 * ipa_nat_del_ipv4_tbl() - delete ipv4 table 68 * @table_handle: [in] Handle of ipv4 nat table 69 * 70 * To delete given ipv4 nat table 71 * 72 * Returns: 0 On Success, negative on failure 73 */ 74 int ipa_nat_del_ipv4_tbl(uint32_t tbl_hdl) 75 { 76 if (IPA_NAT_INVALID_NAT_ENTRY == tbl_hdl || 77 tbl_hdl > IPA_NAT_MAX_IP4_TBLS) { 78 IPAERR("invalid table handle passed \n"); 79 return -EINVAL; 80 } 81 IPADBG("Passed Table Handle: 0x%x\n", tbl_hdl); 82 83 return ipa_nati_del_ipv4_table(tbl_hdl); 84 } 85 86 /** 87 * ipa_nat_add_ipv4_rule() - to insert new ipv4 rule 88 * @table_handle: [in] handle of ipv4 nat table 89 * @rule: [in] Pointer to new rule 90 * @rule_handle: [out] Return the handle to rule 91 * 92 * To insert new ipv4 nat rule into ipv4 nat table 93 * 94 * Returns: 0 On Success, negative on failure 95 */ 96 int ipa_nat_add_ipv4_rule(uint32_t tbl_hdl, 97 const ipa_nat_ipv4_rule *clnt_rule, 98 uint32_t *rule_hdl) 99 { 100 int result = -EINVAL; 101 102 if (IPA_NAT_INVALID_NAT_ENTRY == tbl_hdl || 103 tbl_hdl > IPA_NAT_MAX_IP4_TBLS || NULL == rule_hdl || 104 NULL == clnt_rule) { 105 IPAERR("invalide table handle passed \n"); 106 return result; 107 } 108 IPADBG("Passed Table handle: 0x%x\n", tbl_hdl); 109 110 if (ipa_nati_add_ipv4_rule(tbl_hdl, clnt_rule, rule_hdl) != 0) { 111 return result; 112 } 113 114 IPADBG("returning rule handle 0x%x\n", *rule_hdl); 115 return 0; 116 } 117 118 119 /** 120 * ipa_nat_del_ipv4_rule() - to delete ipv4 nat rule 121 * @table_handle: [in] handle of ipv4 nat table 122 * @rule_handle: [in] ipv4 nat rule handle 123 * 124 * To insert new ipv4 nat rule into ipv4 nat table 125 * 126 * Returns: 0 On Success, negative on failure 127 */ 128 int ipa_nat_del_ipv4_rule(uint32_t tbl_hdl, 129 uint32_t rule_hdl) 130 { 131 int result = -EINVAL; 132 133 if (IPA_NAT_INVALID_NAT_ENTRY == tbl_hdl || 134 IPA_NAT_INVALID_NAT_ENTRY == rule_hdl) { 135 IPAERR("invalide parameters\n"); 136 return result; 137 } 138 IPADBG("Passed Table: 0x%x and rule handle 0x%x\n", tbl_hdl, rule_hdl); 139 140 result = ipa_nati_del_ipv4_rule(tbl_hdl, rule_hdl); 141 if (result) { 142 IPAERR("unable to delete rule from hw \n"); 143 return result; 144 } 145 146 return 0; 147 } 148 149 /** 150 * ipa_nat_query_timestamp() - to query timestamp 151 * @table_handle: [in] handle of ipv4 nat table 152 * @rule_handle: [in] ipv4 nat rule handle 153 * @time_stamp: [out] time stamp of rule 154 * 155 * To retrieve the timestamp that lastly the 156 * nat rule was accessed 157 * 158 * Returns: 0 On Success, negative on failure 159 */ 160 int ipa_nat_query_timestamp(uint32_t tbl_hdl, 161 uint32_t rule_hdl, 162 uint32_t *time_stamp) 163 { 164 165 if (0 == tbl_hdl || tbl_hdl > IPA_NAT_MAX_IP4_TBLS || 166 NULL == time_stamp) { 167 IPAERR("invalid parameters passed \n"); 168 return -EINVAL; 169 } 170 IPADBG("Passed Table: 0x%x and rule handle 0x%x\n", tbl_hdl, rule_hdl); 171 172 return ipa_nati_query_timestamp(tbl_hdl, rule_hdl, time_stamp); 173 } 174 175 176
