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[SCSI] zfcp: Redesign of the debug tracing for SAN records.

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This patch is the continuation to redesign the zfcp tracing to a more
straight-forward and easy to extend scheme.

This patch deals with all trace records of the zfcp SAN area.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Swen Schillig
2010-12-02 15:16:13 +01:00
committed by James Bottomley
parent ae0904f60f
commit 2c55b750a8
5 changed files with 85 additions and 202 deletions
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68
drivers/s390/scsi/zfcp_dbf.h
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@@ -108,6 +108,34 @@ struct zfcp_dbf_rec {
} u;
} __packed;
/**
* enum zfcp_dbf_san_id - SAN trace record identifier
* @ZFCP_DBF_SAN_REQ: request trace record id
* @ZFCP_DBF_SAN_RES: response trace record id
* @ZFCP_DBF_SAN_ELS: extended link service record id
*/
enum zfcp_dbf_san_id {
ZFCP_DBF_SAN_REQ = 1,
ZFCP_DBF_SAN_RES = 2,
ZFCP_DBF_SAN_ELS = 3,
};
/** struct zfcp_dbf_san - trace record for SAN requests and responses
* @id: unique number of recovery record type
* @tag: identifier string specifying the location of initiation
* @fsf_req_id: request id for fsf requests
* @payload: unformatted information related to request/response
* @d_id: destination id
*/
struct zfcp_dbf_san {
u8 id;
char tag[ZFCP_DBF_TAG_LEN];
u64 fsf_req_id;
u32 d_id;
#define ZFCP_DBF_SAN_MAX_PAYLOAD (FC_CT_HDR_LEN + 32)
char payload[ZFCP_DBF_SAN_MAX_PAYLOAD];
} __packed;
struct zfcp_dbf_hba_record_response {
u32 fsf_command;
u64 fsf_reqid;
@@ -176,44 +204,6 @@ struct zfcp_dbf_hba_record {
} u;
} __attribute__ ((packed));
struct zfcp_dbf_san_record_ct_request {
u16 cmd_req_code;
u8 revision;
u8 gs_type;
u8 gs_subtype;
u8 options;
u16 max_res_size;
u32 len;
u32 d_id;
} __attribute__ ((packed));
struct zfcp_dbf_san_record_ct_response {
u16 cmd_rsp_code;
u8 revision;
u8 reason_code;
u8 expl;
u8 vendor_unique;
u16 max_res_size;
u32 len;
} __attribute__ ((packed));
struct zfcp_dbf_san_record_els {
u32 d_id;
} __attribute__ ((packed));
struct zfcp_dbf_san_record {
u8 tag[ZFCP_DBF_TAG_SIZE];
u64 fsf_reqid;
u32 fsf_seqno;
union {
struct zfcp_dbf_san_record_ct_request ct_req;
struct zfcp_dbf_san_record_ct_response ct_resp;
struct zfcp_dbf_san_record_els els;
} u;
} __attribute__ ((packed));
#define ZFCP_DBF_SAN_MAX_PAYLOAD 1024
struct zfcp_dbf_scsi_record {
u8 tag[ZFCP_DBF_TAG_SIZE];
u8 tag2[ZFCP_DBF_TAG_SIZE];
@@ -250,7 +240,7 @@ struct zfcp_dbf {
spinlock_t scsi_lock;
struct zfcp_dbf_rec rec_buf;
struct zfcp_dbf_hba_record hba_buf;
struct zfcp_dbf_san_record san_buf;
struct zfcp_dbf_san san_buf;
struct zfcp_dbf_scsi_record scsi_buf;
struct zfcp_adapter *adapter;
};