Function sctp_free_bufspace

freebsd/netinet/sctputil.c:4973–5002

#ifdef SCTP_MBCNT_LOGGING
void
sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
    struct sctp_tmit_chunk *tp1, int chk_cnt)
{
	if (tp1->data == NULL) {
		return;
	}
	asoc->chunks_on_out_queue -= chk_cnt;
	if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
		sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
		    asoc->total_output_queue_size,
		    tp1->book_size,
		    0,
		    tp1->mbcnt);
	}
	if (asoc->total_output_queue_size >= tp1->book_size) {
		atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
	} else {
		asoc->total_output_queue_size = 0;
	}

	if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
	    ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
		if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
			stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
		} else {
			stcb->sctp_socket->so_snd.sb_cc = 0;
		}
	}
}

#endif