svn commit: r297182 - head/sys/dev/hyperv/netvsc

[Sepherosa Ziehau]

Author: sephe
Date: Tue Mar 22 07:08:47 2016
New Revision: 297182
URL: https://svnweb.freebsd.org/changeset/base/297182

Log:
  hyperv/hn: When short of mbufs on the RX path, don't spam the console.
  
  Instead, increase the IQDROPS counter.
  
  MFC after:	1 week
  Sponsored by:	Microsoft OSTC
  Differential Revision:	https://reviews.freebsd.org/D5693

Modified:
  head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c

Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
==============================================================================
--- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c	Tue Mar 22 06:42:24 2016	(r297181)
+++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c	Tue Mar 22 07:08:47 2016	(r297182)
@@ -1260,8 +1260,10 @@ netvsc_recv(struct hv_vmbus_channel *cha
 		return (0);
 	} else if (packet->tot_data_buf_len <= MHLEN) {
 		m_new = m_gethdr(M_NOWAIT, MT_DATA);
-		if (m_new == NULL)
+		if (m_new == NULL) {
+			if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
 			return (0);
+		}
 		memcpy(mtod(m_new, void *), packet->data,
 		    packet->tot_data_buf_len);
 		m_new->m_pkthdr.len = m_new->m_len = packet->tot_data_buf_len;
@@ -1281,7 +1283,7 @@ netvsc_recv(struct hv_vmbus_channel *cha
 
 		m_new = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, size);
 		if (m_new == NULL) {
-			if_printf(ifp, "alloc mbuf failed.\n");
+			if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
 			return (0);
 		}