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hyperv/hn: When short of mbufs on the RX path, don't spam the console.

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Instead, increase the IQDROPS counter.

MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D5693
This commit is contained in:
Sepherosa Ziehau 2016-03-22 07:08:47 +00:00
parent 59526d4ac7
commit 2e4dba97bd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=297182
1 changed files with 4 additions and 2 deletions
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6
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
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@ -1260,8 +1260,10 @@ netvsc_recv(struct hv_vmbus_channel *chan, netvsc_packet *packet,
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 *chan, netvsc_packet *packet,
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);
}