svn commit: r202678 - head/sys/dev/cxgb

Navdeep Parhar np at FreeBSD.org
Wed Jan 20 07:28:15 UTC 2010


Author: np
Date: Wed Jan 20 07:28:14 2010
New Revision: 202678
URL: http://svn.freebsd.org/changeset/base/202678

Log:
  Complain if freelist queue sizes are significantly less than desired.
  
  MFC after:	1 day

Modified:
  head/sys/dev/cxgb/cxgb_sge.c

Modified: head/sys/dev/cxgb/cxgb_sge.c
==============================================================================
--- head/sys/dev/cxgb/cxgb_sge.c	Wed Jan 20 07:27:56 2010	(r202677)
+++ head/sys/dev/cxgb/cxgb_sge.c	Wed Jan 20 07:28:14 2010	(r202678)
@@ -541,8 +541,12 @@ t3_sge_prep(adapter_t *adap, struct sge_
 	jumbo_q_size = min(nmbjumbo4/(3*nqsets), JUMBO_Q_SIZE);
 #endif
 	while (!powerof2(jumbo_q_size))
-		jumbo_q_size--;		
-	
+		jumbo_q_size--;
+
+	if (fl_q_size < (FL_Q_SIZE / 4) || jumbo_q_size < (JUMBO_Q_SIZE / 2))
+		device_printf(adap->dev,
+		    "Insufficient clusters and/or jumbo buffers.\n");
+
 	/* XXX Does ETHER_ALIGN need to be accounted for here? */
 	p->max_pkt_size = adap->sge.qs[0].fl[1].buf_size - sizeof(struct cpl_rx_data);
 


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