Author: erj
Date: Fri Jan 10 18:29:05 2020
New Revision: 356605
URL: https://svnweb.freebsd.org/changeset/base/356605

Log:
  MFC r356310: iflib: Prevent watchdog from resetting idle queues
  
  Sponsored by: Intel Corporation

Modified:
  stable/12/sys/net/iflib.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/net/iflib.c
==============================================================================
--- stable/12/sys/net/iflib.c   Fri Jan 10 18:24:17 2020        (r356604)
+++ stable/12/sys/net/iflib.c   Fri Jan 10 18:29:05 2020        (r356605)
@@ -2301,8 +2301,11 @@ iflib_timer(void *arg)
                     (sctx->isc_pause_frames == 0)))
                        goto hung;
 
-               if (ifmp_ring_is_stalled(txq->ift_br))
+               if (txq->ift_qstatus != IFLIB_QUEUE_IDLE &&
+                   ifmp_ring_is_stalled(txq->ift_br)) {
+                       KASSERT(ctx->ifc_link_state == LINK_STATE_UP, ("queue 
can't be marked as hung if interface is down"));
                        txq->ift_qstatus = IFLIB_QUEUE_HUNG;
+               }
                txq->ift_cleaned_prev = txq->ift_cleaned;
        }
 #ifdef DEV_NETMAP
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