lib/tcp/tcp.c

702 	if (tcp->tcp_xmit_head != NULL) {
703 		freemsg(tcp->tcp_xmit_head);
704 		tcp->tcp_xmit_head = NULL;
2461 	mp = tcp->tcp_xmit_head;
2924 		mp1 = tcp_xmit_mp(tcp, tcp->tcp_xmit_head, tcp->tcp_mss,
3465 	mp1 = tcp->tcp_xmit_head;
3802 	 * If tcp_xmit_head is NULL, then it must be the FIN being ack'ed.
3955 	tcp->tcp_xmit_head = mp1;
4139 			mp1 = tcp_xmit_mp(tcp, tcp->tcp_xmit_head, snd_size,
4145 				tcp->tcp_xmit_head->b_prev =
4326 			if (tcp->tcp_xmit_head == NULL)
4330 			    (uint32_t)(uintptr_t)tcp->tcp_xmit_head->b_prev);
4560 	if ((mp = tcp->tcp_xmit_head) != NULL) {
4669 	if (tcp->tcp_xmit_head == NULL) {
4670 		tcp->tcp_xmit_head = mp;