Commit 73eefc27 authored by Chaitanya Kulkarni's avatar Chaitanya Kulkarni Committed by Christoph Hellwig
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nvme: add a helper to check ctrl sgl support 



For various transports such as fc/tcp/pci it is common to check if
NVMe SGLs are supported or not by the controller.

In this preparation patch we add a helper to avoid the open coding of
such checks in the various transport.

Signed-off-by: default avatarChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent cb1b10e7

drivers/nvme/host/nvme.h

+5 −0
Original line number Diff line number Diff line
@@ -869,6 +869,11 @@ static inline void nvme_hwmon_exit(struct nvme_ctrl *ctrl) 
}

#endif



static inline bool nvme_ctrl_sgl_supported(struct nvme_ctrl *ctrl)

{

	return ctrl->sgls & ((1 << 0) | (1 << 1));

}



u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns,

			 u8 opcode);

void nvme_execute_passthru_rq(struct request *rq);