cfe/net/net_tcp.c

107 static void _tcp_sendctlmsg(tcp_info_t *ti,tcb_t *tcb,uint16_t flags,int timeout);
124 #define _tcp_preparectlmsg(tcb,flags) (tcb)->tcb_txflags = (flags) ; \
344      * Default socket flags
728     *  _tcp_setflags(ti,s,flags)
730     *  Set per-socket flags.
735     *  	   flags - flags to set
742 int _tcp_setflags(tcp_info_t *ti,int s,unsigned int flags)
749     tcb->tcb_sockflags = flags;
755     *  _tcp_getflags(ti,s,flags)
757     *  Get per-socket flags.
762     *  	   flags - pointer to int to receive flags
769 int _tcp_getflags(tcp_info_t *ti,int s,unsigned int *flags)
776     *flags = tcb->tcb_sockflags;
980     *  _tcp_dumppktstate(label,flags,ack,seq,len)
986     *  	   flags - transmit flags for packet
992 static void _tcp_dumppktstate(char *label,uint16_t flags,
996     if (flags & TCPFLG_FIN) printf("FIN ");
997     if (flags & TCPFLG_SYN) printf("SYN ");
998     if (flags & TCPFLG_RST) printf("RST ");
999     if (flags & TCPFLG_PSH) printf("PSH ");
1000     if (flags & TCPFLG_ACK) printf("ACK ");
1001     if (flags & TCPFLG_URG) printf("URG ");
1028     uint16_t flags;
1094 	flags = TCPFLG_ACK | TCPHDRFLG(TCP_HDR_LENGTH);
1107 	ebuf_append_u16_be(b,flags);		/* Flags */
1126 	if (_tcp_dumpflags) _tcp_dumppktstate("TX_DATA",flags,
1203     uint16_t flags;
1231     /* The flags are the current flags + the header length */
1233 	flags = tcb->tcb_txflags | (TCPHDRFLG(TCP_HDR_LENGTH + 4));
1237 	flags = tcb->tcb_txflags | (TCPHDRFLG(TCP_HDR_LENGTH));
1243 	if (_tcp_dumpflags) _tcp_dumppktstate("TX_CTL",flags,
1265     ebuf_append_u16_be(b,flags);		/* Flags */
1275     if (flags & TCPFLG_SYN) {
1290     if (flags & (TCPFLG_SYN | TCPFLG_FIN)) tcb->tcb_sendnext++;
1351     *  _tcp_sendctlmsg(ti,tcb,flags,timeout)
1362     *  	   flags - packet flags (TCPFLG_xxx)
1369 static void _tcp_sendctlmsg(tcp_info_t *ti,tcb_t *tcb,uint16_t flags,int timeout)
1371     tcb->tcb_txflags = flags;
1465     *  _tcp_procack(ti,tcb,ack,flags)
1473     *  	   flags - flags from received packet
1479 static void _tcp_procack(tcp_info_t *ti,tcb_t *tcb,uint32_t ack,uint16_t flags)
1555 		if (flags & TCPFLG_FIN) {
1571     *  _tcp_procdata(ti,tcb,seqnum,flags,buf)
1580     *  	   seqnum,flags - from the header of the received TCP packet
1588 			  uint16_t flags,ebuf_t *buf)
1700     if (flags & TCPFLG_FIN) {
1727 		if (flags & TCPFLG_ACK) {
1785     uint16_t flags;
1824     ebuf_get_u16_be(buf,flags);
1829     if (TCPHDRSIZE(flags) < TCP_HDR_LENGTH) {
1832     ebuf_skip(buf,(TCPHDRSIZE(flags) - TCP_HDR_LENGTH));
1860 	if (_tcp_dumpflags) _tcp_dumppktstate("Received",flags,
1869     if (flags & TCPFLG_RST) {
1894 	    if (flags & TCPFLG_SYN) {
1909 	     * are packets with SYN flags.
1911 	    if (flags & TCPFLG_SYN) {
1918 		if ((flags & TCPFLG_ACK) &&
1958 	    if (flags & TCPFLG_SYN) {
1968 	    if ((flags & TCPFLG_ACK) &&
1991 	    if (flags & TCPFLG_ACK) {
1992 		_tcp_procack(ti,tcb,acknum,flags);
1994 	    _tcp_procdata(ti,tcb,seqnum,flags,buf);
2018 	    if (!(flags & TCPFLG_RST)) {