/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.0 (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.openairinterface.org/?page_id=698 * * 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. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ /*! \file classifier.c * \brief Classify IP packets * \author Navid Nikaein, Lionel GAUTHIER, Raymond knopp * \company Eurecom * \email: navid.nikaein@eurecom.fr, lionel.gauthier@eurecom.fr, knopp@eurecom.fr */ #include "local.h" #include "proto_extern.h" #include #include #ifdef MPLS #include #endif #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0) #define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000) #define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000) #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000) #define IN_MULTICAST(a) IN_CLASSD(a) #define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000) #define IN_BADCLASS(a) IN_EXPERIMENTAL((a)) /* Address to accept any incoming messages. */ #define INADDR_ANY ((unsigned long int) 0x00000000) /* Address to send to all hosts. */ #define INADDR_BROADCAST ((unsigned long int) 0xffffffff) /* Address indicating an error return. */ #define INADDR_NONE ((unsigned long int) 0xffffffff) #define NIPADDR(addr) \ (uint8_t)(addr & 0x000000FF), \ (uint8_t)((addr & 0x0000FF00) >> 8), \ (uint8_t)((addr & 0x00FF0000) >> 16), \ (uint8_t)((addr & 0xFF000000) >> 24) #define NIP6ADDR(addr) \ ntohs((addr)->s6_addr16[0]), \ ntohs((addr)->s6_addr16[1]), \ ntohs((addr)->s6_addr16[2]), \ ntohs((addr)->s6_addr16[3]), \ ntohs((addr)->s6_addr16[4]), \ ntohs((addr)->s6_addr16[5]), \ ntohs((addr)->s6_addr16[6]), \ ntohs((addr)->s6_addr16[7]) #define IN6_IS_ADDR_UNSPECIFIED(a) \ (((__const uint32_t *) (a))[0] == 0 \ && ((__const uint32_t *) (a))[1] == 0 \ && ((__const uint32_t *) (a))[2] == 0 \ && ((__const uint32_t *) (a))[3] == 0) #define IN6_IS_ADDR_LOOPBACK(a) \ (((__const uint32_t *) (a))[0] == 0 \ && ((__const uint32_t *) (a))[1] == 0 \ && ((__const uint32_t *) (a))[2] == 0 \ && ((__const uint32_t *) (a))[3] == htonl (1)) #define IN6_IS_ADDR_MULTICAST(a) (((__const uint8_t *) (a))[0] == 0xff) #define IN6_IS_ADDR_LINKLOCAL(a) \ ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \ == htonl (0xfe800000)) #define IN6_IS_ADDR_SITELOCAL(a) \ ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \ == htonl (0xfec00000)) #define IN6_IS_ADDR_V4MAPPED(a) \ ((((__const uint32_t *) (a))[0] == 0) \ && (((__const uint32_t *) (a))[1] == 0) \ && (((__const uint32_t *) (a))[2] == htonl (0xffff))) #define IN6_IS_ADDR_V4COMPAT(a) \ ((((__const uint32_t *) (a))[0] == 0) \ && (((__const uint32_t *) (a))[1] == 0) \ && (((__const uint32_t *) (a))[2] == 0) \ && (ntohl (((__const uint32_t *) (a))[3]) > 1)) #define IN6_ARE_ADDR_EQUAL(a,b) \ ((((__const uint32_t *) (a))[0] == ((__const uint32_t *) (b))[0]) \ && (((__const uint32_t *) (a))[1] == ((__const uint32_t *) (b))[1]) \ && (((__const uint32_t *) (a))[2] == ((__const uint32_t *) (b))[2]) \ && (((__const uint32_t *) (a))[3] == ((__const uint32_t *) (b))[3])) #define IN6_IS_ADDR_MC_NODELOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0x1)) #define IN6_IS_ADDR_MC_LINKLOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0x2)) #define IN6_IS_ADDR_MC_SITELOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0x5)) #define IN6_IS_ADDR_MC_ORGLOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0x8)) #define IN6_IS_ADDR_MC_GLOBAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0xe)) #define IN6_ARE_ADDR_MASKED_EQUAL(a,b,m) \ (((((__const uint32_t *) (a))[0] & (((__const uint32_t *) (m))[0])) == (((__const uint32_t *) (b))[0] & (((__const uint32_t *) (m))[0]))) \ && ((((__const uint32_t *) (a))[1] & (((__const uint32_t *) (m))[1])) == (((__const uint32_t *) (b))[1] & (((__const uint32_t *) (m))[1]))) \ && ((((__const uint32_t *) (a))[2] & (((__const uint32_t *) (m))[2])) == (((__const uint32_t *) (b))[2] & (((__const uint32_t *) (m))[2]))) \ && ((((__const uint32_t *) (a))[3] & (((__const uint32_t *) (m))[3])) == (((__const uint32_t *) (b))[3] & (((__const uint32_t *) (m))[3])))) #define IN_ARE_ADDR_MASKED_EQUAL(a,b,m) \ (((((__const uint8_t *) (a))[0] & (((__const uint8_t *) (m))[0])) == (((__const uint8_t *) (b))[0] & (((__const uint8_t *) (m))[0]))) \ && ((((__const uint8_t *) (a))[1] & (((__const uint8_t *) (m))[1])) == (((__const uint8_t *) (b))[1] & (((__const uint8_t *) (m))[1]))) \ && ((((__const uint8_t *) (a))[2] & (((__const uint8_t *) (m))[2])) == (((__const uint8_t *) (b))[2] & (((__const uint8_t *) (m))[2]))) \ && ((((__const uint8_t *) (a))[3] & (((__const uint8_t *) (m))[3])) == (((__const uint8_t *) (b))[3] & (((__const uint8_t *) (m))[3])))) //--------------------------------------------------------------------------- // Find the IP traffic type (UNICAST, MULTICAST, BROADCAST) ip_traffic_type_t oai_nw_drv_find_traffic_type(struct sk_buff *skb) { //--------------------------------------------------------------------------- ip_traffic_type_t traffic_type = TRAFFIC_IPVX_TYPE_UNKNOWN; if (skb!=NULL) { switch (ntohs(skb->protocol)) { case ETH_P_IPV6: traffic_type = TRAFFIC_IPV6_TYPE_UNKNOWN; #ifdef OAI_DRV_DEBUG_CLASS printk("SOURCE ADDR %X:%X:%X:%X:%X:%X:%X:%X",NIP6ADDR(&(ipv6_hdr(skb)->saddr))); printk(" DEST ADDR %X:%X:%X:%X:%X:%X:%X:%X\n",NIP6ADDR(&(ipv6_hdr(skb)->daddr))); #endif if (IN6_IS_ADDR_MULTICAST(&ipv6_hdr(skb)->daddr.in6_u.u6_addr32[0])) { traffic_type = TRAFFIC_IPV6_TYPE_MULTICAST; } else { traffic_type = TRAFFIC_IPV6_TYPE_UNICAST; } break; case ETH_P_IP: traffic_type = TRAFFIC_IPV4_TYPE_UNKNOWN; //print_TOOL_pk_ipv4((struct iphdr *)skb->network_header); if (IN_MULTICAST(htonl(ip_hdr(skb)->daddr))) { traffic_type = TRAFFIC_IPV4_TYPE_MULTICAST; } else { traffic_type = TRAFFIC_IPV4_TYPE_UNICAST; } // TO DO BROADCAST break; case ETH_P_ARP: traffic_type = TRAFFIC_IPV4_TYPE_BROADCAST; break; default: ; } } return traffic_type; }