From: Dexuan Cui <decui@microsoft.com>
To: "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
Stephen Hemminger <sthemmin@microsoft.com>,
Sasha Levin <Alexander.Levin@microsoft.com>,
"sashal@kernel.org" <sashal@kernel.org>,
Haiyang Zhang <haiyangz@microsoft.com>,
KY Srinivasan <kys@microsoft.com>,
Michael Kelley <mikelley@microsoft.com>,
"tglx@linutronix.de" <tglx@linutronix.de>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Dexuan Cui <decui@microsoft.com>
Subject: [PATCH v5 3/9] Drivers: hv: vmbus: Add a helper function is_sub_channel()
Date: Thu, 5 Sep 2019 23:01:16 +0000 [thread overview]
Message-ID: <1567724446-30990-4-git-send-email-decui@microsoft.com> (raw)
In-Reply-To: <1567724446-30990-1-git-send-email-decui@microsoft.com>
The existing method of telling if a channel is sub-channel in
vmbus_process_offer() is cumbersome. This new simple helper function
is preferred in future.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
---
include/linux/hyperv.h | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 6256cc3..2d39248 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -245,7 +245,10 @@ struct vmbus_channel_offer {
} pipe;
} u;
/*
- * The sub_channel_index is defined in win8.
+ * The sub_channel_index is defined in Win8: a value of zero means a
+ * primary channel and a value of non-zero means a sub-channel.
+ *
+ * Before Win8, the field is reserved, meaning it's always zero.
*/
u16 sub_channel_index;
u16 reserved3;
@@ -934,6 +937,11 @@ static inline bool is_hvsock_channel(const struct vmbus_channel *c)
VMBUS_CHANNEL_TLNPI_PROVIDER_OFFER);
}
+static inline bool is_sub_channel(const struct vmbus_channel *c)
+{
+ return c->offermsg.offer.sub_channel_index != 0;
+}
+
static inline void set_channel_affinity_state(struct vmbus_channel *c,
enum hv_numa_policy policy)
{
--
1.8.3.1
next prev parent reply other threads:[~2019-09-05 23:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 23:01 [PATCH v5 0/9] Enhance the hv_vmbus driver to support hibernation Dexuan Cui
2019-09-05 23:01 ` [PATCH v5 1/9] Drivers: hv: vmbus: Break out synic enable and disable operations Dexuan Cui
2019-09-05 23:01 ` Dexuan Cui [this message]
2019-09-05 23:01 ` [PATCH v5 2/9] Drivers: hv: vmbus: Suspend/resume the synic for hibernation Dexuan Cui
2019-09-05 23:01 ` [PATCH v5 4/9] Drivers: hv: vmbus: Implement suspend/resume for VSC drivers " Dexuan Cui
2019-09-05 23:01 ` [PATCH v5 5/9] Drivers: hv: vmbus: Ignore the offers when resuming from hibernation Dexuan Cui
2019-09-05 23:01 ` [PATCH v5 6/9] Drivers: hv: vmbus: Suspend/resume the vmbus itself for hibernation Dexuan Cui
2019-09-05 23:01 ` [PATCH v5 7/9] Drivers: hv: vmbus: Clean up hv_sock channels by force upon suspend Dexuan Cui
2019-09-05 23:01 ` [PATCH v5 8/9] Drivers: hv: vmbus: Suspend after cleaning up hv_sock and sub channels Dexuan Cui
2019-09-05 23:01 ` [PATCH v5 9/9] Drivers: hv: vmbus: Resume after fixing up old primary channels Dexuan Cui
2019-09-06 20:03 ` [PATCH v5 0/9] Enhance the hv_vmbus driver to support hibernation Sasha Levin
2019-09-06 22:45 ` Dexuan Cui
2019-09-08 12:13 ` Sasha Levin
2019-09-08 16:32 ` Dexuan Cui
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