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710c7e6cf6
Currently, the tcp and udp implementations are bound to each other in a module called *destiny*. Thus, when using only one of them then the other one gets also compiled into the binary and initialized, which results in unnecessary RAM usage and workload for the CPU. The approach in this PR defines a common module named *socket_base*, which contains functions used by the posix layer. Compiled by it's own, those functions return negative error codes, to symbolize upper layers that they are not supported. When also including the modules *udp* or *tcp* respectively, functions from *socket_base* get overwritten with the correct functionality. Defining *udp* or *tcp* in a Makefile also includes *socket_base*. Defining *pnet* in a Makefile also includes *socket_base*.
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin.
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#ifndef _SOCKET_BASE_SOCKET
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#define _SOCKET_BASE_SOCKET
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#include "cpu.h"
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#include "socket_base/socket.h"
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#ifdef MODULE_UDP
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#include "udp.h"
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#endif
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#ifdef MODULE_TCP
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#include "tcp.h"
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#endif
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#define MAX_SOCKETS 5
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// #define MAX_QUEUED_SOCKETS 2
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#define INC_PACKET 0
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#define OUT_PACKET 1
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#ifdef MODULE_TCP
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typedef struct __attribute__((packed)) {
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uint16_t context_id;
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uint32_t seq_rcv; // Last received packet values
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uint32_t ack_rcv;
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uint16_t wnd_rcv;
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uint32_t seq_snd; // Last sent packet values
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uint32_t ack_snd;
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uint16_t wnd_snd;
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uint8_t hc_type;
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} tcp_hc_context_t;
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typedef struct __attribute__((packed)) {
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uint32_t send_una;
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uint32_t send_nxt;
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uint16_t send_wnd;
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uint32_t send_iss;
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uint32_t rcv_nxt;
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uint16_t rcv_wnd;
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uint32_t rcv_irs;
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timex_t last_packet_time;
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uint8_t no_of_retries;
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uint16_t mss;
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uint8_t state;
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double srtt;
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double rttvar;
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double rto;
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#ifdef TCP_HC
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tcp_hc_context_t tcp_context;
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#endif
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} tcp_cb_t;
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#endif
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typedef struct {
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uint8_t domain;
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uint8_t type;
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uint8_t protocol;
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#ifdef MODULE_TCP
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tcp_cb_t tcp_control;
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#endif
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sockaddr6_t local_address;
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sockaddr6_t foreign_address;
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} socket_t;
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typedef struct {
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uint8_t socket_id;
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uint8_t recv_pid;
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uint8_t send_pid;
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socket_t socket_values;
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#ifdef MODULE_TCP
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uint8_t tcp_input_buffer_end;
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mutex_t tcp_buffer_mutex;
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uint8_t tcp_input_buffer[TRANSPORT_LAYER_SOCKET_MAX_TCP_BUFFER];
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#endif
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} socket_internal_t;
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extern socket_internal_t socket_base_sockets[MAX_SOCKETS];
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socket_internal_t *socket_base_get_socket(int s);
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uint16_t socket_base_get_free_source_port(uint8_t protocol);
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int socket_base_exists_socket(int socket);
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int socket_base_socket(int domain, int type, int protocol);
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void socket_base_print_sockets(void);
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#endif /* _SOCKET_BASE_SOCKET */
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