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Drivers: hv: vmbus: Enable explicit signaling policy for NIC channels

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For synthetic NIC channels, enable explicit signaling policy as netvsc wants to
explicitly control when the host is to be signaled.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan
2016-07-01 16:26:35 -07:00
committed by Greg Kroah-Hartman
parent 638fea33ae
commit ccef9bcc02
4 changed files with 20 additions and 18 deletions
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18
drivers/hv/channel.c
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@@ -650,7 +650,7 @@ int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer,
bufferlist[2].iov_len = (packetlen_aligned - packetlen);
ret = hv_ringbuffer_write(&channel->outbound, bufferlist, num_vecs,
&signal, lock);
&signal, lock, channel->signal_policy);
/*
* Signalling the host is conditional on many factors:
@@ -671,11 +671,6 @@ int vmbus_sendpacket_ctl(struct vmbus_channel *channel, void *buffer,
* mechanism which can hurt the performance otherwise.
*/
if (channel->signal_policy)
signal = true;
else
kick_q = true;
if (((ret == 0) && kick_q && signal) ||
(ret && !is_hvsock_channel(channel)))
vmbus_setevent(channel);
@@ -768,7 +763,7 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel,
bufferlist[2].iov_len = (packetlen_aligned - packetlen);
ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3,
&signal, lock);
&signal, lock, channel->signal_policy);
/*
* Signalling the host is conditional on many factors:
@@ -786,11 +781,6 @@ int vmbus_sendpacket_pagebuffer_ctl(struct vmbus_channel *channel,
* enough condition that it should not matter.
*/
if (channel->signal_policy)
signal = true;
else
kick_q = true;
if (((ret == 0) && kick_q && signal) || (ret))
vmbus_setevent(channel);
@@ -852,7 +842,7 @@ int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel,
bufferlist[2].iov_len = (packetlen_aligned - packetlen);
ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3,
&signal, lock);
&signal, lock, channel->signal_policy);
if (ret == 0 && signal)
vmbus_setevent(channel);
@@ -917,7 +907,7 @@ int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,
bufferlist[2].iov_len = (packetlen_aligned - packetlen);
ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3,
&signal, lock);
&signal, lock, channel->signal_policy);
if (ret == 0 && signal)
vmbus_setevent(channel);