From: Michael Kelley <mikelley@microsoft.com>
To: Dexuan Cui <decui@microsoft.com>,
"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.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>,
"tglx@linutronix.de" <tglx@linutronix.de>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH v3 06/12] Drivers: hv: vmbus: Add a helper function is_sub_channel()
Date: Fri, 23 Aug 2019 19:51:57 +0000 [thread overview]
Message-ID: <DM5PR21MB01375EFE9F76EDED7CC96F95D7A40@DM5PR21MB0137.namprd21.prod.outlook.com> (raw)
In-Reply-To: <1566265863-21252-7-git-send-email-decui@microsoft.com>
From: Dexuan Cui <decui@microsoft.com> Sent: Monday, August 19, 2019 6:52 PM
>
> 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>
> ---
> 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
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
next prev parent reply other threads:[~2019-08-23 19:52 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 1:51 [PATCH v3 00/12] Enhance the hv_vmbus driver to support hibernation Dexuan Cui
2019-08-20 1:51 ` [PATCH v3 01/12] x86/hyper-v: Suspend/resume the hypercall page for hibernation Dexuan Cui
2019-08-20 1:51 ` [PATCH v3 02/12] x86/hyper-v: Implement hv_is_hibernation_supported() Dexuan Cui
2019-08-23 19:50 ` Michael Kelley
2019-08-30 23:37 ` Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 03/12] clocksource/drivers: Suspend/resume Hyper-V clocksource for hibernation Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 04/12] Drivers: hv: vmbus: Break out synic enable and disable operations Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 05/12] Drivers: hv: vmbus: Suspend/resume the synic for hibernation Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 06/12] Drivers: hv: vmbus: Add a helper function is_sub_channel() Dexuan Cui
2019-08-23 19:51 ` Michael Kelley [this message]
2019-08-20 1:52 ` [PATCH v3 07/12] Drivers: hv: vmbus: Implement suspend/resume for VSC drivers for hibernation Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 08/12] Drivers: hv: vmbus: Ignore the offers when resuming from hibernation Dexuan Cui
2019-08-23 19:56 ` Michael Kelley
2019-08-31 0:23 ` Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 09/12] Drivers: hv: vmbus: Suspend/resume the vmbus itself for hibernation Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 10/12] Drivers: hv: vmbus: Clean up hv_sock channels by force upon suspend Dexuan Cui
2019-08-23 20:02 ` Michael Kelley
2019-08-31 2:00 ` Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 11/12] Drivers: hv: vmbus: Suspend after cleaning up hv_sock and sub channels Dexuan Cui
2019-08-23 20:16 ` Michael Kelley
2019-08-31 2:54 ` Dexuan Cui
2019-08-20 1:52 ` [PATCH v3 12/12] Drivers: hv: vmbus: Resume after fixing up old primary channels Dexuan Cui
2019-08-23 20:25 ` Michael Kelley
2019-08-31 4:37 ` Dexuan Cui
2019-08-31 5:08 ` Dexuan Cui
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