[src/trunk]: src/sys/dev/ic reclaim transmitted packets on receive interrupts.

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b908baf0e650
branches:  trunk
changeset: 486739:b908baf0e650
user:      matt <matt%NetBSD.org@localhost>
date:      Sun May 28 01:28:52 2000 +0000

description:
reclaim transmitted packets on receive interrupts.

diffstat:

 sys/dev/ic/pdq.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (45 lines):

diff -r b2a77bd3ecd6 -r b908baf0e650 sys/dev/ic/pdq.c
--- a/sys/dev/ic/pdq.c  Sun May 28 01:27:52 2000 +0000
+++ b/sys/dev/ic/pdq.c  Sun May 28 01:28:52 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pdq.c,v 1.28 1999/12/27 22:41:04 matt Exp $    */
+/*     $NetBSD: pdq.c,v 1.29 2000/05/28 01:28:52 matt Exp $    */
 
 /*-
  * Copyright (c) 1995,1996 Matt Thomas <matt%3am-software.com@localhost>
@@ -1031,6 +1031,7 @@
     volatile const pdq_consumer_block_t *cbp = pdq->pdq_cbp;
     pdq_descriptor_block_t *dbp = pdq->pdq_dbp;
     pdq_uint32_t completion = tx->tx_completion;
+    int reclaimed = 0;
 
     while (completion != cbp->pdqcb_transmits) {
        PDQ_OS_DATABUF_T *pdu;
@@ -1040,7 +1041,7 @@
        PDQ_OS_DATABUF_DEQUEUE(&tx->tx_txq, pdu);
        pdq_os_transmit_done(pdq, pdu);
        tx->tx_free += descriptor_count;
-
+       reclaimed = 1;
        PDQ_ADVANCE(completion, descriptor_count, PDQ_RING_MASK(dbp->pdqdb_transmits));
     }
     if (tx->tx_completion != completion) {
@@ -1049,7 +1050,8 @@
        PDQ_CSR_WRITE(&pdq->pdq_csrs, csr_host_int_enable, pdq->pdq_intrmask);
        pdq_os_restart_transmitter(pdq);
     }
-    PDQ_DO_TYPE2_PRODUCER(pdq);
+    if (reclaimed)
+       PDQ_DO_TYPE2_PRODUCER(pdq);
 }
 
 void
@@ -1430,7 +1432,7 @@
                                      PDQ_RING_MASK(pdq->pdq_dbp->pdqdb_host_smt));
            PDQ_DO_HOST_SMT_PRODUCER(pdq);
        }
-       if (data & PDQ_PSTS_XMT_DATA_PENDING)
+       /* if (data & PDQ_PSTS_XMT_DATA_PENDING) */
            pdq_process_transmitted_data(pdq);
        if (data & PDQ_PSTS_UNSOL_PENDING)
            pdq_process_unsolicited_events(pdq);