Drivers: hv: vmbus: Add a helper function is_sub_channel() (ed56ef67) · Commits · 戴 / test

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> Signed-off-by:

Sasha Levin <sashal@kernel.org>

include/linux/hyperv.h

+9 −1

Original line number	Diff line number	Diff line
		@@ -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)
		{

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