diff options
| author | Andrea Parri (Microsoft) <parri.andrea@gmail.com> | 2022-04-19 14:23:23 +0200 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2022-04-25 15:51:12 +0000 |
| commit | 0aadb6a7bb811554cf39318b5d18e8ec50dd9f02 (patch) | |
| tree | 747313f405d50341346381763ff44215f294ebd7 /include/linux/hyperv.h | |
| parent | b03afa57c65e1e045e02df49777e953742745f4c (diff) | |
Drivers: hv: vmbus: Introduce vmbus_request_addr_match()
The function can be used to retrieve and clear/remove a transation ID
from a channel requestor, provided the memory address corresponding to
the ID equals a specified address. The function, and its 'lockless'
variant __vmbus_request_addr_match(), will be used by hv_pci.
Refactor vmbus_request_addr() to reuse the 'newly' introduced code.
No functional change.
Suggested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220419122325.10078-5-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include/linux/hyperv.h')
| -rw-r--r-- | include/linux/hyperv.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 7cb8718825ee..2e4962a2fbec 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -788,6 +788,7 @@ struct vmbus_requestor { #define VMBUS_NO_RQSTOR U64_MAX #define VMBUS_RQST_ERROR (U64_MAX - 1) +#define VMBUS_RQST_ADDR_ANY U64_MAX /* NetVSC-specific */ #define VMBUS_RQST_ID_NO_RESPONSE (U64_MAX - 2) /* StorVSC-specific */ @@ -1042,6 +1043,10 @@ struct vmbus_channel { }; u64 vmbus_next_request_id(struct vmbus_channel *channel, u64 rqst_addr); +u64 __vmbus_request_addr_match(struct vmbus_channel *channel, u64 trans_id, + u64 rqst_addr); +u64 vmbus_request_addr_match(struct vmbus_channel *channel, u64 trans_id, + u64 rqst_addr); u64 vmbus_request_addr(struct vmbus_channel *channel, u64 trans_id); static inline bool is_hvsock_channel(const struct vmbus_channel *c) |