diff options
| author | Saurabh Sengar <ssengar@linux.microsoft.com> | 2024-03-30 01:51:57 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-11 14:55:53 +0200 |
| commit | e8c4bd6c6e6b7e7b416c42806981c2a81370001e (patch) | |
| tree | 3dd3fdd1ac0cab7040d84db5a1341bbe72d16fc6 /include/linux/hyperv.h | |
| parent | a36b69775fcaab42262f6dbf288ccb6d470158ae (diff) | |
Drivers: hv: vmbus: Add utility function for querying ring size
Add a function to query for the preferred ring buffer size of VMBus
device. This will allow the drivers (eg. UIO) to allocate the most
optimized ring buffer size for devices.
Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Long Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/1711788723-8593-2-git-send-email-ssengar@linux.microsoft.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/hyperv.h')
| -rw-r--r-- | include/linux/hyperv.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 6ef0557b4bff..7de9f90d3f95 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -820,6 +820,8 @@ struct vmbus_requestor { #define VMBUS_RQST_RESET (U64_MAX - 3) struct vmbus_device { + /* preferred ring buffer size in KB, 0 means no preferred size for this device */ + size_t pref_ring_size; u16 dev_type; guid_t guid; bool perf_device; |