/* * Copyright (c) 2018 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * @file * @brief NAT syslog logging */ #include <vnet/fib/fib_table.h> #include <vnet/ip/ip.h> #include <vnet/syslog/syslog.h> #include <nat/nat_syslog.h> #include <nat/nat_inlines.h> #define NAT_FACILITY SYSLOG_FACILITY_LOCAL0 #define NAT_APPNAME "NAT" #define SADD_SDEL_SEVERITY SYSLOG_SEVERITY_INFORMATIONAL #define APMADD_APMDEL_SEVERITY SYSLOG_SEVERITY_INFORMATIONAL #define SADD_MSGID "SADD" #define SDEL_MSGID "SDEL" #define APMADD_MSGID "APMADD" #define APMDEL_MSGID "APMDEL" #define NSESS_SDID "nsess" #define NAPMAP_SDID "napmap" #define SSUBIX_SDPARAM_NAME "SSUBIX" #define SVLAN_SDPARAM_NAME "SVLAN" #define IATYP_SDPARAM_NAME "IATYP" #define ISADDR_SDPARAM_NAME "ISADDR" #define ISPORT_SDPARAM_NAME "ISPORT" #define IDADDR_SDPARAM_NAME "IDADDR" #define IDPORT_SDPARAM_NAME "IDPORT" #define XATYP_SDPARAM_NAME "XATYP" #define XSADDR_SDPARAM_NAME "XSADDR" #define XSPORT_SDPARAM_NAME "XSPORT" #define XDADDR_SDPARAM_NAME "XDADDR" #define XDPORT_SDPARAM_NAME "XDPORT" #define PROTO_SDPARAM_NAME "PROTO" #define SV6ENC_SDPARAM_NAME "SV6ENC" #define IATYP_IPV4 "IPv4" #define IATYP_IPV6 "IPv6" static inline void nat_syslog_nat44_apmap (u32 ssubix, u32 sfibix, ip4_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, snat_protocol_t proto, u8 is_add, ip6_address_t * sv6enc) { syslog_msg_t syslog_msg; fib_table_t *fib; if (!syslog_is_enabled ()) return; if (syslog_severity_filter_block (APMADD_APMDEL_SEVERITY)) return; syslog_msg_init (&syslog_msg, NAT_FACILITY, APMADD_APMDEL_SEVERITY, NAT_APPNAME, is_add ? APMADD_MSGID : APMDEL_MSGID); syslog_msg_sd_init (&syslog_msg, NAPMAP_SDID); syslog_msg_add_sd_param (&syslog_msg, SSUBIX_SDPARAM_NAME, "%d", ssubix); if (sv6enc) { syslog_msg_add_sd_param (&syslog_msg, SV6ENC_SDPARAM_NAME, "%U", format_ip6_address, sv6enc); } else { fib = fib_table_get (sfibix, FIB_PROTOCOL_IP4); syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d", fib->ft_table_id); } syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV4); syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U", format_ip4_address, isaddr); syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (isport)); syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4); syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U", format_ip4_address, xsaddr); syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (xsport)); syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d", snat_proto_to_ip_proto (proto)); syslog_msg_send (&syslog_msg); } void nat_syslog_nat44_apmadd (u32 ssubix, u32 sfibix, ip4_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, snat_protocol_t proto) { nat_syslog_nat44_apmap (ssubix, sfibix, isaddr, isport, xsaddr, xsport, proto, 1, 0); } void nat_syslog_nat44_apmdel (u32 ssubix, u32 sfibix, ip4_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, snat_protocol_t proto) { nat_syslog_nat44_apmap (ssubix, sfibix, isaddr, isport, xsaddr, xsport, proto, 0, 0); } void nat_syslog_dslite_apmadd (u32 ssubix, ip6_address_t * sv6enc, ip4_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, snat_protocol_t proto) { nat_syslog_nat44_apmap (ssubix, 0, isaddr, isport, xsaddr, xsport, proto, 1, sv6enc); } void nat_syslog_dslite_apmdel (u32 ssubix, ip6_address_t * sv6enc, ip4_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, snat_protocol_t proto) { nat_syslog_nat44_apmap (ssubix, 0, isaddr, isport, xsaddr, xsport, proto, 0, sv6enc); } static inline void nat_syslog_nat44_sess (u32 ssubix, u32 sfibix, ip4_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, ip4_address_t * idaddr, u16 idport, ip4_address_t * xdaddr, u16 xdport, snat_protocol_t proto, u8 is_add, u8 is_twicenat) { syslog_msg_t syslog_msg; fib_table_t *fib; if (!syslog_is_enabled ()) return; if (syslog_severity_filter_block (SADD_SDEL_SEVERITY)) return; fib = fib_table_get (sfibix, FIB_PROTOCOL_IP4); syslog_msg_init (&syslog_msg, NAT_FACILITY, SADD_SDEL_SEVERITY, NAT_APPNAME, is_add ? SADD_MSGID : SDEL_MSGID); syslog_msg_sd_init (&syslog_msg, NSESS_SDID); syslog_msg_add_sd_param (&syslog_msg, SSUBIX_SDPARAM_NAME, "%d", ssubix); syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d", fib->ft_table_id); syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV4); syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U", format_ip4_address, isaddr); syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (isport)); syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4); syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U", format_ip4_address, xsaddr); syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (xsport)); syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d", snat_proto_to_ip_proto (proto)); syslog_msg_add_sd_param (&syslog_msg, XDADDR_SDPARAM_NAME, "%U", format_ip4_address, xdaddr); syslog_msg_add_sd_param (&syslog_msg, XDPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (xdport)); if (is_twicenat) { syslog_msg_add_sd_param (&syslog_msg, IDADDR_SDPARAM_NAME, "%U", format_ip4_address, idaddr); syslog_msg_add_sd_param (&syslog_msg, IDPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (idport)); } syslog_msg_send (&syslog_msg); } void nat_syslog_nat44_sadd (u32 ssubix, u32 sfibix, ip4_address_t * isaddr, u16 isport, ip4_address_t * idaddr, u16 idport, ip4_address_t * xsaddr, u16 xsport, ip4_address_t * xdaddr, u16 xdport, snat_protocol_t proto, u8 is_twicenat) { nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport, idaddr, idport, xdaddr, xdport, proto, 1, is_twicenat); } void nat_syslog_nat44_sdel (u32 ssubix, u32 sfibix, ip4_address_t * isaddr, u16 isport, ip4_address_t * idaddr, u16 idport, ip4_address_t * xsaddr, u16 xsport, ip4_address_t * xdaddr, u16 xdport, snat_protocol_t proto, u8 is_twicenat) { nat_syslog_nat44_sess (ssubix, sfibix, isaddr, isport, xsaddr, xsport, idaddr, idport, xdaddr, xdport, proto, 0, is_twicenat); } static inline void nat_syslog_nat64_sess (u32 sfibix, ip6_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, ip4_address_t * xdaddr, u16 xdport, snat_protocol_t proto, u8 is_add) { syslog_msg_t syslog_msg; fib_table_t *fib; if (!syslog_is_enabled ()) return; if (syslog_severity_filter_block (SADD_SDEL_SEVERITY)) return; fib = fib_table_get (sfibix, FIB_PROTOCOL_IP6); syslog_msg_init (&syslog_msg, NAT_FACILITY, SADD_SDEL_SEVERITY, NAT_APPNAME, is_add ? SADD_MSGID : SDEL_MSGID); syslog_msg_sd_init (&syslog_msg, NSESS_SDID); syslog_msg_add_sd_param (&syslog_msg, SVLAN_SDPARAM_NAME, "%d", fib->ft_table_id); syslog_msg_add_sd_param (&syslog_msg, IATYP_SDPARAM_NAME, IATYP_IPV6); syslog_msg_add_sd_param (&syslog_msg, ISADDR_SDPARAM_NAME, "%U", format_ip6_address, isaddr); syslog_msg_add_sd_param (&syslog_msg, ISPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (isport)); syslog_msg_add_sd_param (&syslog_msg, XATYP_SDPARAM_NAME, IATYP_IPV4); syslog_msg_add_sd_param (&syslog_msg, XSADDR_SDPARAM_NAME, "%U", format_ip4_address, xsaddr); syslog_msg_add_sd_param (&syslog_msg, XSPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (xsport)); syslog_msg_add_sd_param (&syslog_msg, PROTO_SDPARAM_NAME, "%d", proto); syslog_msg_add_sd_param (&syslog_msg, XDADDR_SDPARAM_NAME, "%U", format_ip4_address, xdaddr); syslog_msg_add_sd_param (&syslog_msg, XDPORT_SDPARAM_NAME, "%d", clib_net_to_host_u16 (xdport)); syslog_msg_send (&syslog_msg); } void nat_syslog_nat64_sadd (u32 sfibix, ip6_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, ip4_address_t * xdaddr, u16 xdport, snat_protocol_t proto) { nat_syslog_nat64_sess (sfibix, isaddr, isport, xsaddr, xsport, xdaddr, xdport, proto, 1); } void nat_syslog_nat64_sdel (u32 sfibix, ip6_address_t * isaddr, u16 isport, ip4_address_t * xsaddr, u16 xsport, ip4_address_t * xdaddr, u16 xdport, snat_protocol_t proto) { nat_syslog_nat64_sess (sfibix, isaddr, isport, xsaddr, xsport, xdaddr, xdport, proto, 0); } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */