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/* |
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* Cisco router simulation platform. |
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* Copyright (c) 2005,2006 Christophe Fillot (cf@utc.fr) |
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* |
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* Network I/O Layer. |
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*/ |
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|
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#ifndef __NET_IO_H__ |
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#define __NET_IO_H__ |
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|
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/un.h> |
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#include <pthread.h> |
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#include "utils.h" |
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|
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#ifdef LINUX_ETH |
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#include "linux_eth.h" |
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#endif |
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#ifdef GEN_ETH |
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#include "gen_eth.h" |
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#endif |
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|
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/* Maximum packet size */ |
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#define NETIO_MAX_PKT_SIZE 32768 |
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|
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/* Maximum device length */ |
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#define NETIO_DEV_MAXLEN 64 |
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|
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enum { |
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NETIO_TYPE_UNIX = 0, |
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NETIO_TYPE_VDE, |
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NETIO_TYPE_TAP, |
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NETIO_TYPE_UDP, |
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NETIO_TYPE_TCP_CLI, |
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NETIO_TYPE_TCP_SER, |
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#ifdef LINUX_ETH |
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NETIO_TYPE_LINUX_ETH, |
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#endif |
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#ifdef GEN_ETH |
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NETIO_TYPE_GEN_ETH, |
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#endif |
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NETIO_TYPE_FIFO, |
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NETIO_TYPE_NULL, |
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NETIO_TYPE_MAX, |
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}; |
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|
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enum { |
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NETIO_FILTER_ACTION_DROP = 0, |
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NETIO_FILTER_ACTION_PASS, |
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NETIO_FILTER_ACTION_ALTER, |
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NETIO_FILTER_ACTION_DUPLICATE, |
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}; |
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|
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typedef struct netio_desc netio_desc_t; |
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|
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/* VDE switch definitions */ |
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enum vde_request_type { VDE_REQ_NEW_CONTROL }; |
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|
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#define VDE_SWITCH_MAGIC 0xfeedface |
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#define VDE_SWITCH_VERSION 3 |
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|
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struct vde_request_v3 { |
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m_uint32_t magic; |
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m_uint32_t version; |
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enum vde_request_type type; |
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struct sockaddr_un sock; |
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}; |
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|
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/* netio unix descriptor */ |
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typedef struct netio_unix_desc netio_unix_desc_t; |
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struct netio_unix_desc { |
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char *local_filename; |
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struct sockaddr_un remote_sock; |
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int fd; |
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}; |
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|
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/* netio vde descriptor */ |
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typedef struct netio_vde_desc netio_vde_desc_t; |
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struct netio_vde_desc { |
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char *local_filename; |
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struct sockaddr_un remote_sock; |
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int ctrl_fd,data_fd; |
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}; |
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|
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/* netio tap descriptor */ |
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typedef struct netio_tap_desc netio_tap_desc_t; |
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struct netio_tap_desc { |
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char filename[NETIO_DEV_MAXLEN]; |
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int fd; |
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}; |
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|
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/* netio udp/tcp descriptor */ |
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typedef struct netio_inet_desc netio_inet_desc_t; |
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struct netio_inet_desc { |
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int local_port,remote_port; |
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char *remote_host; |
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int fd; |
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}; |
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|
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#ifdef LINUX_ETH |
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/* netio linux raw ethernet descriptor */ |
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typedef struct netio_lnxeth_desc netio_lnxeth_desc_t; |
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struct netio_lnxeth_desc { |
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char dev_name[NETIO_DEV_MAXLEN]; |
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int dev_id,fd; |
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}; |
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#endif |
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|
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#ifdef GEN_ETH |
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/* netio generic raw ethernet descriptor */ |
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typedef struct netio_geneth_desc netio_geneth_desc_t; |
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struct netio_geneth_desc { |
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char dev_name[NETIO_DEV_MAXLEN]; |
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pcap_t *pcap_dev; |
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}; |
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#endif |
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|
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/* FIFO packet */ |
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typedef struct netio_fifo_pkt netio_fifo_pkt_t; |
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struct netio_fifo_pkt { |
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netio_fifo_pkt_t *next; |
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size_t pkt_len; |
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char pkt[0]; |
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}; |
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|
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/* Netio FIFO */ |
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typedef struct netio_fifo_desc netio_fifo_desc_t; |
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struct netio_fifo_desc { |
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pthread_cond_t cond; |
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pthread_mutex_t lock,endpoint_lock; |
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netio_fifo_desc_t *endpoint; |
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netio_fifo_pkt_t *head,*last; |
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u_int pkt_count; |
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}; |
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|
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/* Packet filter */ |
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typedef struct netio_pktfilter netio_pktfilter_t; |
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struct netio_pktfilter { |
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char *name; |
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int (*setup)(netio_desc_t *nio,void **opt,int argc,char *argv[]); |
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void (*free)(netio_desc_t *nio,void **opt); |
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int (*pkt_handler)(netio_desc_t *nio,void *pkt,size_t len,void *opt); |
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netio_pktfilter_t *next; |
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}; |
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|
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/* Generic netio descriptor */ |
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struct netio_desc { |
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u_int type; |
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void *dptr; |
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char *name; |
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int debug; |
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|
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/* Frame Relay specific information */ |
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m_uint8_t fr_lmi_seq; |
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void *fr_conn_list; |
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|
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/* Ethernet specific information */ |
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u_int vlan_port_type; |
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m_uint16_t vlan_id; |
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void *vlan_input_vector; |
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|
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union { |
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netio_unix_desc_t nud; |
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netio_vde_desc_t nvd; |
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netio_tap_desc_t ntd; |
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netio_inet_desc_t nid; |
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#ifdef LINUX_ETH |
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netio_lnxeth_desc_t nled; |
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#endif |
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#ifdef GEN_ETH |
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netio_geneth_desc_t nged; |
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#endif |
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netio_fifo_desc_t nfd; |
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} u; |
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|
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/* Send and receive prototypes */ |
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ssize_t (*send)(void *desc,void *pkt,size_t len); |
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ssize_t (*recv)(void *desc,void *pkt,size_t len); |
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|
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/* Configuration saving */ |
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void (*save_cfg)(netio_desc_t *nio,FILE *fd); |
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|
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/* Packet filters */ |
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netio_pktfilter_t *rx_filter,*tx_filter,*both_filter; |
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void *rx_filter_data,*tx_filter_data,*both_filter_data; |
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|
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/* Next pointer (for RX listener) */ |
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netio_desc_t *rxl_next; |
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|
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/* Packet data */ |
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u_char rx_pkt[NETIO_MAX_PKT_SIZE]; |
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}; |
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|
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/* RX listener */ |
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typedef int (*netio_rx_handler_t)(netio_desc_t *nio, |
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u_char *pkt,ssize_t pkt_len, |
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void *arg1,void *arg2); |
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|
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struct netio_rx_listener { |
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netio_desc_t *nio; |
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u_int ref_count; |
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volatile int running; |
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netio_rx_handler_t rx_handler; |
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void *arg1,*arg2; |
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pthread_t spec_thread; |
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struct netio_rx_listener *prev,*next; |
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}; |
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|
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/* Get NETIO type given a description */ |
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int netio_get_type(char *type); |
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|
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/* Show the NETIO types */ |
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void netio_show_types(void); |
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|
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/* Create a new NetIO descriptor */ |
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netio_desc_t *netio_desc_create_unix(char *nio_name,char *local,char *remote); |
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|
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/* Create a new NetIO descriptor with VDE method */ |
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netio_desc_t *netio_desc_create_vde(char *nio_name,char *control,char *local); |
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|
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/* Create a new NetIO descriptor with TAP method */ |
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netio_desc_t *netio_desc_create_tap(char *nio_name,char *tap_name); |
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|
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/* Create a new NetIO descriptor with TCP_CLI method */ |
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netio_desc_t *netio_desc_create_tcp_cli(char *nio_name,char *addr,char *port); |
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|
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/* Create a new NetIO descriptor with TCP_SER method */ |
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netio_desc_t *netio_desc_create_tcp_ser(char *nio_name,char *port); |
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|
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/* Create a new NetIO descriptor with UDP method */ |
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netio_desc_t *netio_desc_create_udp(char *nio_name,int local_port, |
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char *remote_host,int remote_port); |
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|
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#ifdef LINUX_ETH |
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/* Create a new NetIO descriptor with raw Ethernet method */ |
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netio_desc_t *netio_desc_create_lnxeth(char *nio_name,char *dev_name); |
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#endif |
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|
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#ifdef GEN_ETH |
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/* Create a new NetIO descriptor with generic raw Ethernet method */ |
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netio_desc_t *netio_desc_create_geneth(char *nio_name,char *dev_name); |
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#endif |
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|
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/* Establish a cross-connect between two FIFO NetIO */ |
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int netio_fifo_crossconnect(netio_desc_t *a,netio_desc_t *b); |
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|
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/* Create a new NetIO descriptor with FIFO method */ |
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netio_desc_t *netio_desc_create_fifo(char *nio_name); |
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|
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/* Create a new NetIO descriptor with NULL method */ |
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netio_desc_t *netio_desc_create_null(char *nio_name); |
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|
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/* Acquire a reference to NIO from registry (increment reference count) */ |
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netio_desc_t *netio_acquire(char *name); |
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|
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/* Release an NIO (decrement reference count) */ |
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int netio_release(char *name); |
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|
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/* Delete a NetIO descriptor */ |
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int netio_delete(char *name); |
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|
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/* Delete all NetIO descriptors */ |
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int netio_delete_all(void); |
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|
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/* Save the configuration of a NetIO descriptor */ |
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void netio_save_config(netio_desc_t *nio,FILE *fd); |
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|
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/* Save configurations of all NetIO descriptors */ |
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void netio_save_config_all(FILE *fd); |
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|
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/* Send a packet through a NetIO descriptor */ |
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ssize_t netio_send(netio_desc_t *nio,void *pkt,size_t len); |
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|
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/* Receive a packet through a NetIO descriptor */ |
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ssize_t netio_recv(netio_desc_t *nio,void *pkt,size_t max_len); |
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|
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/* Get a NetIO FD */ |
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int netio_get_fd(netio_desc_t *nio); |
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|
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/* Enable a RX listener */ |
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int netio_rxl_enable(netio_desc_t *nio); |
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|
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/* Add an RX listener in the listener list */ |
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int netio_rxl_add(netio_desc_t *nio,netio_rx_handler_t rx_handler, |
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void *arg1,void *arg2); |
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|
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/* Remove a NIO from the listener list */ |
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int netio_rxl_remove(netio_desc_t *nio); |
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|
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/* Initialize the RXL thread */ |
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int netio_rxl_init(void); |
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|
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#endif |