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Commit ad795e47 authored by Minwoo Im's avatar Minwoo Im Committed by Christoph Hellwig
Browse files

nvme-trace: support for fabrics commands in host-side 



This patch introduces fabrics commands tracing feature from host-side.
This patch does not include any changes for the previous host-side
tracing, but just add fabrics commands parsing in cmd=() format.

Signed-off-by: default avatarMinwoo Im <minwoo.im.dev@gmail.com>
[hch: fixed some whitespace damage]
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 26f2990d

drivers/nvme/host/trace.c

+63 −0
Original line number Diff line number Diff line
@@ -135,6 +135,69 @@ const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, 
	}

}



static const char *nvme_trace_fabrics_property_set(struct trace_seq *p, u8 *spc)

{

	const char *ret = trace_seq_buffer_ptr(p);

	u8 attrib = spc[0];

	u32 ofst = get_unaligned_le32(spc + 4);

	u64 value = get_unaligned_le64(spc + 8);



	trace_seq_printf(p, "attrib=%u, ofst=0x%x, value=0x%llx",

			 attrib, ofst, value);

	trace_seq_putc(p, 0);

	return ret;

}



static const char *nvme_trace_fabrics_connect(struct trace_seq *p, u8 *spc)

{

	const char *ret = trace_seq_buffer_ptr(p);

	u16 recfmt = get_unaligned_le16(spc);

	u16 qid = get_unaligned_le16(spc + 2);

	u16 sqsize = get_unaligned_le16(spc + 4);

	u8 cattr = spc[6];

	u32 kato = get_unaligned_le32(spc + 8);



	trace_seq_printf(p, "recfmt=%u, qid=%u, sqsize=%u, cattr=%u, kato=%u",

			 recfmt, qid, sqsize, cattr, kato);

	trace_seq_putc(p, 0);

	return ret;

}



static const char *nvme_trace_fabrics_property_get(struct trace_seq *p, u8 *spc)

{

	const char *ret = trace_seq_buffer_ptr(p);

	u8 attrib = spc[0];

	u32 ofst = get_unaligned_le32(spc + 4);



	trace_seq_printf(p, "attrib=%u, ofst=0x%x", attrib, ofst);

	trace_seq_putc(p, 0);

	return ret;

}



static const char *nvme_trace_fabrics_common(struct trace_seq *p, u8 *spc)

{

	const char *ret = trace_seq_buffer_ptr(p);



	trace_seq_printf(p, "spcecific=%*ph", 24, spc);

	trace_seq_putc(p, 0);

	return ret;

}



const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p,

		u8 fctype, u8 *spc)

{

	switch (fctype) {

	case nvme_fabrics_type_property_set:

		return nvme_trace_fabrics_property_set(p, spc);

	case nvme_fabrics_type_connect:

		return nvme_trace_fabrics_connect(p, spc);

	case nvme_fabrics_type_property_get:

		return nvme_trace_fabrics_property_get(p, spc);

	default:

		return nvme_trace_fabrics_common(p, spc);

	}

}



const char *nvme_trace_disk_name(struct trace_seq *p, char *name)

{

	const char *ret = trace_seq_buffer_ptr(p);

drivers/nvme/host/trace.h

+14 −6
Original line number Diff line number Diff line
@@ -20,11 +20,15 @@ const char *nvme_trace_parse_admin_cmd(struct trace_seq *p, u8 opcode, 
		u8 *cdw10);

const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, u8 opcode,

		u8 *cdw10);

const char *nvme_trace_parse_fabrics_cmd(struct trace_seq *p, u8 fctype,

		u8 *spc);



#define parse_nvme_cmd(qid, opcode, cdw10) 			\

	(qid ?							\

#define parse_nvme_cmd(qid, opcode, fctype, cdw10)			\

	((opcode) == nvme_fabrics_command ?				\

	 nvme_trace_parse_fabrics_cmd(p, fctype, cdw10) :		\

	((qid) ?							\

	 nvme_trace_parse_nvm_cmd(p, opcode, cdw10) :			\

	 nvme_trace_parse_admin_cmd(p, opcode, cdw10))

	 nvme_trace_parse_admin_cmd(p, opcode, cdw10)))



const char *nvme_trace_disk_name(struct trace_seq *p, char *name);

#define __print_disk_name(name)				\
@@ -49,6 +53,7 @@ TRACE_EVENT(nvme_setup_cmd, 
		__field(int, qid)

		__field(u8, opcode)

		__field(u8, flags)

		__field(u8, fctype)

		__field(u16, cid)

		__field(u32, nsid)

		__field(u64, metadata)
@@ -62,6 +67,7 @@ TRACE_EVENT(nvme_setup_cmd, 
		__entry->cid = cmd->common.command_id;

		__entry->nsid = le32_to_cpu(cmd->common.nsid);

		__entry->metadata = le64_to_cpu(cmd->common.metadata);

		__entry->fctype = cmd->fabrics.fctype;

		__assign_disk_name(__entry->disk, req->rq_disk);

		memcpy(__entry->cdw10, &cmd->common.cdw10,

			sizeof(__entry->cdw10));
@@ -70,8 +76,10 @@ TRACE_EVENT(nvme_setup_cmd, 
		      __entry->ctrl_id, __print_disk_name(__entry->disk),

		      __entry->qid, __entry->cid, __entry->nsid,

		      __entry->flags, __entry->metadata,

		      show_opcode_name(__entry->qid, __entry->opcode),

		      parse_nvme_cmd(__entry->qid, __entry->opcode, __entry->cdw10))

		      show_opcode_name(__entry->qid, __entry->opcode,

				__entry->fctype),

		      parse_nvme_cmd(__entry->qid, __entry->opcode,

				__entry->fctype, __entry->cdw10))

);



TRACE_EVENT(nvme_complete_rq,

include/linux/nvme.h

+17 −3
Original line number Diff line number Diff line
@@ -836,9 +836,6 @@ enum nvme_admin_opcode { 
		nvme_admin_opcode_name(nvme_admin_security_recv),	\

		nvme_admin_opcode_name(nvme_admin_sanitize_nvm))



#define show_opcode_name(qid, opcode)					\

	(qid ? show_nvm_opcode_name(opcode) : show_admin_opcode_name(opcode))



enum {

	NVME_QUEUE_PHYS_CONTIG	= (1 << 0),

	NVME_CQ_IRQ_ENABLED	= (1 << 1),
@@ -1053,6 +1050,23 @@ enum nvmf_capsule_command { 
	nvme_fabrics_type_property_get	= 0x04,

};



#define nvme_fabrics_type_name(type)   { type, #type }

#define show_fabrics_type_name(type)					\

	__print_symbolic(type,						\

		nvme_fabrics_type_name(nvme_fabrics_type_property_set),	\

		nvme_fabrics_type_name(nvme_fabrics_type_connect),	\

		nvme_fabrics_type_name(nvme_fabrics_type_property_get))



/*

 * If not fabrics command, fctype will be ignored.

 */

#define show_opcode_name(qid, opcode, fctype)			\

	((opcode) == nvme_fabrics_command ?			\

	 show_fabrics_type_name(fctype) :			\

	((qid) ?						\

	 show_nvm_opcode_name(opcode) :				\

	 show_admin_opcode_name(opcode)))



struct nvmf_common_command {

	__u8	opcode;

	__u8	resv1;