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bsg: add io_uring command support for SCSI passthrough #488

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@blktests-ci blktests-ci bot commented Jan 15, 2026

Pull request for series with
subject: bsg: add io_uring command support for SCSI passthrough
version: 2
url: https://patchwork.kernel.org/project/linux-block/list/?series=1042560

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blktests-ci bot commented Jan 15, 2026

Upstream branch: 944aacb
series: https://patchwork.kernel.org/project/linux-block/list/?series=1042560
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blktests-ci bot commented Jan 16, 2026

Upstream branch: 944aacb
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Upstream branch: 944aacb
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@blktests-ci blktests-ci bot force-pushed the series/1041050=>linus-master branch from 954be0a to 40aae42 Compare January 19, 2026 00:27
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Upstream branch: 6c79021
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Upstream branch: 6c79021
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Upstream branch: 8dfce89
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blktests-ci bot commented Feb 9, 2026

Upstream branch: 05f7e89
series: https://patchwork.kernel.org/project/linux-block/list/?series=1045415
version: 4

Yang Xiuwei added 3 commits February 9, 2026 13:39
@kawasaki
bsg: add bsg_uring_cmd uapi structure
a8e96d3 
Add the bsg_uring_cmd structure to the BSG UAPI header to support
io_uring-based SCSI passthrough operations via IORING_OP_URING_CMD.

Signed-off-by: Yang Xiuwei <[email protected]>
@kawasaki
bsg: add uring_cmd support to BSG generic layer
4e44e4b 
Add io_uring command handler to the generic BSG layer. This handler
validates SQE128/CQE32 flags and command structure, then delegates to
the protocol-specific handler via a callback function pointer registered
during bsg_register_queue().

Signed-off-by: Yang Xiuwei <[email protected]>
@kawasaki
bsg: implement SCSI BSG uring_cmd handler
a875ad9 
Implement the SCSI-specific io_uring command handler for BSG. This
handler processes SCSI passthrough commands asynchronously via io_uring,
supporting both traditional user buffers and zero-copy fixed buffers.

Key features:
- Async command execution with proper completion handling
- Zero-copy support via io_uring fixed buffers
- Status information returned in CQE res2 field
- Non-blocking I/O support via IO_URING_F_NONBLOCK
- Proper error handling and validation

The implementation uses a PDU structure overlaying io_uring_cmd.pdu[32]
to store temporary state during command execution. Completion is handled
via task work to safely access user space.

This patch replaces the stub implementation from patch 2/3 with the full
implementation.

Signed-off-by: Yang Xiuwei <[email protected]>
@blktests-ci blktests-ci bot force-pushed the series/1041050=>linus-master branch from 167646f to a875ad9 Compare February 9, 2026 04:39
@blktests-ci blktests-ci bot force-pushed the linus-master_base branch from 30e5c22 to 519f160 Compare February 12, 2026 00:34
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blktests-ci bot commented Feb 12, 2026

Upstream branch: c22e26b
series: https://patchwork.kernel.org/project/linux-block/list/?series=1045415
version: 4

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Upstream branch: c22e26b
series: https://patchwork.kernel.org/project/linux-block/list/?series=1045415
version: 4

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blktests-ci bot commented Feb 12, 2026

Github failed to update this PR after force push. Close it.

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