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| author | Dexuan Cui <decui@microsoft.com> | 2019-09-05 23:01:16 +0000 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2019-09-06 14:52:44 -0400 |
| commit | ed56ef675ae6ef0e6f7d42b9c42dae61172f0960 (patch) | |
| tree | f295bd2ac3a5177561c9c847c89dac15e2ef48d0 /include | |
| parent | 63ecc6d22ce46643165c391a9c90ba67e22e1c0f (diff) | |
| download | linux-stable-ed56ef675ae6ef0e6f7d42b9c42dae61172f0960.tar.gz linux-stable-ed56ef675ae6ef0e6f7d42b9c42dae61172f0960.tar.bz2 linux-stable-ed56ef675ae6ef0e6f7d42b9c42dae61172f0960.zip | |
Drivers: hv: vmbus: Add a helper function is_sub_channel()
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/hyperv.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 6256cc34c4a6..2d39248cff96 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) { |