Author: np
Date: Sat Aug 2 01:48:25 2014
New Revision: 269413
URL: http://svnweb.freebsd.org/changeset/base/269413
Log:
cxgbe(4): Fix an off by one error when looking for the BAR2 doorbell
address of an egress queue.
MFC after: 2 weeks
Modified:
head/sys/dev/cxgbe/t4_netmap.c
head/sys/dev/cxgbe/t4_sge.c
Modified: head/sys/dev/cxgbe/t4_netmap.c
==============================================================================
--- head/sys/dev/cxgbe/t4_netmap.c Sat Aug 2 01:28:01 2014
(r269412)
+++ head/sys/dev/cxgbe/t4_netmap.c Sat Aug 2 01:48:25 2014
(r269413)
@@ -390,7 +390,7 @@ alloc_nm_txq_hwq(struct port_info *pi, s
udb = sc->udbs_base + UDBS_DB_OFFSET;
udb += (nm_txq->cntxt_id >> s_qpp) << PAGE_SHIFT;
nm_txq->udb_qid = nm_txq->cntxt_id & mask;
- if (nm_txq->udb_qid > PAGE_SIZE / UDBS_SEG_SIZE)
+ if (nm_txq->udb_qid >= PAGE_SIZE / UDBS_SEG_SIZE)
clrbit(&nm_txq->doorbells, DOORBELL_WCWR);
else {
udb += nm_txq->udb_qid << UDBS_SEG_SHIFT;
Modified: head/sys/dev/cxgbe/t4_sge.c
==============================================================================
--- head/sys/dev/cxgbe/t4_sge.c Sat Aug 2 01:28:01 2014 (r269412)
+++ head/sys/dev/cxgbe/t4_sge.c Sat Aug 2 01:48:25 2014 (r269413)
@@ -2985,7 +2985,7 @@ alloc_eq(struct adapter *sc, struct port
udb = sc->udbs_base + UDBS_DB_OFFSET;
udb += (eq->cntxt_id >> s_qpp) << PAGE_SHIFT; /* pg offset */
eq->udb_qid = eq->cntxt_id & mask; /* id in page */
- if (eq->udb_qid > PAGE_SIZE / UDBS_SEG_SIZE)
+ if (eq->udb_qid >= PAGE_SIZE / UDBS_SEG_SIZE)
clrbit(&eq->doorbells, DOORBELL_WCWR);
else {
udb += eq->udb_qid << UDBS_SEG_SHIFT; /* seg offset */
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