From cf3be894fcb95adb360425c8482954522e9110d2 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sun, 23 Aug 2009 12:11:20 +0200 Subject: conntrackd: add support state-replication based on TCP This patch adds support for TCP as protocol to replicate state-changes between two daemons. Note that this only makes sense with the notrack mode. Signed-off-by: Pablo Neira Ayuso --- include/tcp.h | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 include/tcp.h (limited to 'include/tcp.h') diff --git a/include/tcp.h b/include/tcp.h new file mode 100644 index 0000000..1b1d391 --- /dev/null +++ b/include/tcp.h @@ -0,0 +1,75 @@ +#ifndef _TCP_H_ +#define _TCP_H_ + +#include +#include + +struct tcp_conf { + int ipproto; + int reuseaddr; + int checksum; + unsigned short port; + union { + struct { + struct in_addr inet_addr; + } ipv4; + struct { + struct in6_addr inet_addr6; + int scope_id; + } ipv6; + } server; + union { + struct in_addr inet_addr; + struct in6_addr inet_addr6; + } client; + int sndbuf; + int rcvbuf; +}; + +struct tcp_stats { + uint64_t bytes; + uint64_t messages; + uint64_t error; +}; + +enum tcp_sock_state { + TCP_SERVER_ACCEPTING, + TCP_SERVER_CONNECTED, + TCP_CLIENT_DISCONNECTED, + TCP_CLIENT_CONNECTED +}; + +struct tcp_sock { + int state; /* enum tcp_sock_state */ + int fd; + int client_fd; /* only for the server side */ + union { + struct sockaddr_in ipv4; + struct sockaddr_in6 ipv6; + } addr; + socklen_t sockaddr_len; + struct tcp_stats stats; +}; + +struct tcp_sock *tcp_server_create(struct tcp_conf *conf); +void tcp_server_destroy(struct tcp_sock *m); + +struct tcp_sock *tcp_client_create(struct tcp_conf *conf); +void tcp_client_destroy(struct tcp_sock *m); + +ssize_t tcp_send(struct tcp_sock *m, const void *data, int size); +ssize_t tcp_recv(struct tcp_sock *m, void *data, int size); +int tcp_accept(struct tcp_sock *m); + +int tcp_get_fd(struct tcp_sock *m); +int tcp_isset(struct tcp_sock *m, fd_set *readfds); +int tcp_accept_isset(struct tcp_sock *m, fd_set *readfds); + +int tcp_snprintf_stats(char *buf, size_t buflen, char *ifname, + struct tcp_sock *s, struct tcp_sock *r); + +int tcp_snprintf_stats2(char *buf, size_t buflen, const char *ifname, + const char *status, int active, + struct tcp_stats *s, struct tcp_stats *r); + +#endif -- cgit v1.2.3