Author: jhb
Date: Fri Jan 4 00:06:30 2019
New Revision: 342750
URL: https://svnweb.freebsd.org/changeset/base/342750
Log:
MFC 340021: Assert that reclaim_tx_descs() is always making forward progress.
Modified:
stable/12/sys/dev/cxgbe/t4_sge.c
Directory Properties:
stable/12/ (props changed)
Changes in other areas also in this revision:
Modified:
stable/11/sys/dev/cxgbe/t4_sge.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/12/sys/dev/cxgbe/t4_sge.c
==============================================================================
--- stable/12/sys/dev/cxgbe/t4_sge.c Thu Jan 3 23:06:05 2019
(r342749)
+++ stable/12/sys/dev/cxgbe/t4_sge.c Fri Jan 4 00:06:30 2019
(r342750)
@@ -5079,6 +5079,9 @@ reclaim_tx_descs(struct sge_txq *txq, u_int n)
KASSERT(can_reclaim >= ndesc,
("%s: unexpected number of credits: %d, %d",
__func__, can_reclaim, ndesc));
+ KASSERT(ndesc != 0,
+ ("%s: descriptor with no credits: cidx %d",
+ __func__, eq->cidx));
for (m = txsd->m; m != NULL; m = nextpkt) {
nextpkt = m->m_nextpkt;
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