diff options
author | Swen Schillig <swen@vnet.ibm.com> | 2010-12-02 15:16:13 +0100 |
---|---|---|
committer | James Bottomley <James.Bottomley@suse.de> | 2010-12-21 12:24:45 -0600 |
commit | 2c55b750a884b86dea8b4cc5f15e1484cc47a25c (patch) | |
tree | 0f7e53365fc93504c6a23a14d0faae16998861e8 /drivers/s390/scsi/zfcp_dbf.c | |
parent | ae0904f60fab7cb20c48d32eefdd735e478b91fb (diff) | |
download | linux-2c55b750a884b86dea8b4cc5f15e1484cc47a25c.tar.bz2 |
[SCSI] zfcp: Redesign of the debug tracing for SAN records.
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>
Diffstat (limited to 'drivers/s390/scsi/zfcp_dbf.c')
-rw-r--r-- | drivers/s390/scsi/zfcp_dbf.c | 201 |
1 files changed, 48 insertions, 153 deletions
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index 675503628cc9..6ece47e5148c 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -527,183 +527,79 @@ void zfcp_dbf_rec_run(char *tag, struct zfcp_erp_action *erp) spin_unlock_irqrestore(&dbf->rec_lock, flags); } -/** - * zfcp_dbf_san_ct_request - trace event for issued CT request - * @fsf_req: request containing issued CT data - * @d_id: destination id where ct request is sent to - */ -void zfcp_dbf_san_ct_request(struct zfcp_fsf_req *fsf_req, u32 d_id) -{ - struct zfcp_fsf_ct_els *ct = (struct zfcp_fsf_ct_els *)fsf_req->data; - struct zfcp_adapter *adapter = fsf_req->adapter; - struct zfcp_dbf *dbf = adapter->dbf; - struct fc_ct_hdr *hdr = sg_virt(ct->req); - struct zfcp_dbf_san_record *r = &dbf->san_buf; - struct zfcp_dbf_san_record_ct_request *oct = &r->u.ct_req; - int level = 3; - unsigned long flags; - - spin_lock_irqsave(&dbf->san_lock, flags); - memset(r, 0, sizeof(*r)); - strncpy(r->tag, "octc", ZFCP_DBF_TAG_SIZE); - r->fsf_reqid = fsf_req->req_id; - r->fsf_seqno = fsf_req->seq_no; - oct->d_id = d_id; - oct->cmd_req_code = hdr->ct_cmd; - oct->revision = hdr->ct_rev; - oct->gs_type = hdr->ct_fs_type; - oct->gs_subtype = hdr->ct_fs_subtype; - oct->options = hdr->ct_options; - oct->max_res_size = hdr->ct_mr_size; - oct->len = min((int)ct->req->length - (int)sizeof(struct fc_ct_hdr), - ZFCP_DBF_SAN_MAX_PAYLOAD); - debug_event(dbf->san, level, r, sizeof(*r)); - zfcp_dbf_hexdump(dbf->san, r, sizeof(*r), level, - (void *)hdr + sizeof(struct fc_ct_hdr), oct->len); - spin_unlock_irqrestore(&dbf->san_lock, flags); -} - -/** - * zfcp_dbf_san_ct_response - trace event for completion of CT request - * @fsf_req: request containing CT response - */ -void zfcp_dbf_san_ct_response(struct zfcp_fsf_req *fsf_req) +static inline +void zfcp_dbf_san(char *tag, struct zfcp_dbf *dbf, void *data, u8 id, u16 len, + u64 req_id, u32 d_id) { - struct zfcp_fsf_ct_els *ct = (struct zfcp_fsf_ct_els *)fsf_req->data; - struct zfcp_adapter *adapter = fsf_req->adapter; - struct fc_ct_hdr *hdr = sg_virt(ct->resp); - struct zfcp_dbf *dbf = adapter->dbf; - struct zfcp_dbf_san_record *r = &dbf->san_buf; - struct zfcp_dbf_san_record_ct_response *rct = &r->u.ct_resp; - int level = 3; + struct zfcp_dbf_san *rec = &dbf->san_buf; + u16 rec_len; unsigned long flags; spin_lock_irqsave(&dbf->san_lock, flags); - memset(r, 0, sizeof(*r)); - strncpy(r->tag, "rctc", ZFCP_DBF_TAG_SIZE); - r->fsf_reqid = fsf_req->req_id; - r->fsf_seqno = fsf_req->seq_no; - rct->cmd_rsp_code = hdr->ct_cmd; - rct->revision = hdr->ct_rev; - rct->reason_code = hdr->ct_reason; - rct->expl = hdr->ct_explan; - rct->vendor_unique = hdr->ct_vendor; - rct->max_res_size = hdr->ct_mr_size; - rct->len = min((int)ct->resp->length - (int)sizeof(struct fc_ct_hdr), - ZFCP_DBF_SAN_MAX_PAYLOAD); - debug_event(dbf->san, level, r, sizeof(*r)); - zfcp_dbf_hexdump(dbf->san, r, sizeof(*r), level, - (void *)hdr + sizeof(struct fc_ct_hdr), rct->len); - spin_unlock_irqrestore(&dbf->san_lock, flags); -} + memset(rec, 0, sizeof(*rec)); -static void zfcp_dbf_san_els(const char *tag, int level, - struct zfcp_fsf_req *fsf_req, u32 d_id, - void *buffer, int buflen) -{ - struct zfcp_adapter *adapter = fsf_req->adapter; - struct zfcp_dbf *dbf = adapter->dbf; - struct zfcp_dbf_san_record *rec = &dbf->san_buf; - unsigned long flags; + rec->id = id; + rec->fsf_req_id = req_id; + rec->d_id = d_id; + rec_len = min(len, (u16)ZFCP_DBF_SAN_MAX_PAYLOAD); + memcpy(rec->payload, data, rec_len); + memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN); - spin_lock_irqsave(&dbf->san_lock, flags); - memset(rec, 0, sizeof(*rec)); - strncpy(rec->tag, tag, ZFCP_DBF_TAG_SIZE); - rec->fsf_reqid = fsf_req->req_id; - rec->fsf_seqno = fsf_req->seq_no; - rec->u.els.d_id = d_id; - debug_event(dbf->san, level, rec, sizeof(*rec)); - zfcp_dbf_hexdump(dbf->san, rec, sizeof(*rec), level, - buffer, min(buflen, ZFCP_DBF_SAN_MAX_PAYLOAD)); + debug_event(dbf->san, 1, rec, sizeof(*rec)); spin_unlock_irqrestore(&dbf->san_lock, flags); } /** - * zfcp_dbf_san_els_request - trace event for issued ELS - * @fsf_req: request containing issued ELS + * zfcp_dbf_san_req - trace event for issued SAN request + * @tag: indentifier for event + * @fsf_req: request containing issued CT data + * d_id: destination ID */ -void zfcp_dbf_san_els_request(struct zfcp_fsf_req *fsf_req) +void zfcp_dbf_san_req(char *tag, struct zfcp_fsf_req *fsf, u32 d_id) { - struct zfcp_fsf_ct_els *els = (struct zfcp_fsf_ct_els *)fsf_req->data; - u32 d_id = ntoh24(fsf_req->qtcb->bottom.support.d_id); + struct zfcp_dbf *dbf = fsf->adapter->dbf; + struct zfcp_fsf_ct_els *ct_els = fsf->data; + u16 length; - zfcp_dbf_san_els("oels", 2, fsf_req, d_id, - sg_virt(els->req), els->req->length); + length = (u16)(ct_els->req->length + FC_CT_HDR_LEN); + zfcp_dbf_san(tag, dbf, sg_virt(ct_els->req), ZFCP_DBF_SAN_REQ, length, + fsf->req_id, d_id); } /** - * zfcp_dbf_san_els_response - trace event for completed ELS - * @fsf_req: request containing ELS response + * zfcp_dbf_san_res - trace event for received SAN request + * @tag: indentifier for event + * @fsf_req: request containing issued CT data */ -void zfcp_dbf_san_els_response(struct zfcp_fsf_req *fsf_req) +void zfcp_dbf_san_res(char *tag, struct zfcp_fsf_req *fsf) { - struct zfcp_fsf_ct_els *els = (struct zfcp_fsf_ct_els *)fsf_req->data; - u32 d_id = ntoh24(fsf_req->qtcb->bottom.support.d_id); + struct zfcp_dbf *dbf = fsf->adapter->dbf; + struct zfcp_fsf_ct_els *ct_els = fsf->data; + u16 length; - zfcp_dbf_san_els("rels", 2, fsf_req, d_id, - sg_virt(els->resp), els->resp->length); + length = (u16)(ct_els->resp->length + FC_CT_HDR_LEN); + zfcp_dbf_san(tag, dbf, sg_virt(ct_els->resp), ZFCP_DBF_SAN_RES, length, + fsf->req_id, 0); } /** - * zfcp_dbf_san_incoming_els - trace event for incomig ELS - * @fsf_req: request containing unsolicited status buffer with incoming ELS + * zfcp_dbf_san_in_els - trace event for incoming ELS + * @tag: indentifier for event + * @fsf_req: request containing issued CT data */ -void zfcp_dbf_san_incoming_els(struct zfcp_fsf_req *fsf_req) -{ - struct fsf_status_read_buffer *buf = - (struct fsf_status_read_buffer *)fsf_req->data; - int length = (int)buf->length - - (int)((void *)&buf->payload - (void *)buf); - - zfcp_dbf_san_els("iels", 1, fsf_req, ntoh24(buf->d_id), - (void *)buf->payload.data, length); -} - -static int zfcp_dbf_san_view_format(debug_info_t *id, struct debug_view *view, - char *out_buf, const char *in_buf) +void zfcp_dbf_san_in_els(char *tag, struct zfcp_fsf_req *fsf) { - struct zfcp_dbf_san_record *r = (struct zfcp_dbf_san_record *)in_buf; - char *p = out_buf; - - if (strncmp(r->tag, "dump", ZFCP_DBF_TAG_SIZE) == 0) - return 0; - - zfcp_dbf_tag(&p, "tag", r->tag); - zfcp_dbf_out(&p, "fsf_reqid", "0x%0Lx", r->fsf_reqid); - zfcp_dbf_out(&p, "fsf_seqno", "0x%08x", r->fsf_seqno); - - if (strncmp(r->tag, "octc", ZFCP_DBF_TAG_SIZE) == 0) { - struct zfcp_dbf_san_record_ct_request *ct = &r->u.ct_req; - zfcp_dbf_out(&p, "d_id", "0x%06x", ct->d_id); - zfcp_dbf_out(&p, "cmd_req_code", "0x%04x", ct->cmd_req_code); - zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision); - zfcp_dbf_out(&p, "gs_type", "0x%02x", ct->gs_type); - zfcp_dbf_out(&p, "gs_subtype", "0x%02x", ct->gs_subtype); - zfcp_dbf_out(&p, "options", "0x%02x", ct->options); - zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size); - } else if (strncmp(r->tag, "rctc", ZFCP_DBF_TAG_SIZE) == 0) { - struct zfcp_dbf_san_record_ct_response *ct = &r->u.ct_resp; - zfcp_dbf_out(&p, "cmd_rsp_code", "0x%04x", ct->cmd_rsp_code); - zfcp_dbf_out(&p, "revision", "0x%02x", ct->revision); - zfcp_dbf_out(&p, "reason_code", "0x%02x", ct->reason_code); - zfcp_dbf_out(&p, "reason_code_expl", "0x%02x", ct->expl); - zfcp_dbf_out(&p, "vendor_unique", "0x%02x", ct->vendor_unique); - zfcp_dbf_out(&p, "max_res_size", "0x%04x", ct->max_res_size); - } else if (strncmp(r->tag, "oels", ZFCP_DBF_TAG_SIZE) == 0 || - strncmp(r->tag, "rels", ZFCP_DBF_TAG_SIZE) == 0 || - strncmp(r->tag, "iels", ZFCP_DBF_TAG_SIZE) == 0) { - struct zfcp_dbf_san_record_els *els = &r->u.els; - zfcp_dbf_out(&p, "d_id", "0x%06x", els->d_id); - } - return p - out_buf; + struct zfcp_dbf *dbf = fsf->adapter->dbf; + struct fsf_status_read_buffer *srb = + (struct fsf_status_read_buffer *) fsf->data; + u16 length; + + length = (u16)(srb->length - + offsetof(struct fsf_status_read_buffer, payload)); + zfcp_dbf_san(tag, dbf, srb->payload.data, ZFCP_DBF_SAN_ELS, length, + fsf->req_id, ntoh24(srb->d_id)); } -static struct debug_view zfcp_dbf_san_view = { - .name = "structured", - .header_proc = zfcp_dbf_view_header, - .format_proc = zfcp_dbf_san_view_format, -}; - void _zfcp_dbf_scsi(const char *tag, const char *tag2, int level, struct zfcp_dbf *dbf, struct scsi_cmnd *scsi_cmnd, struct zfcp_fsf_req *fsf_req, unsigned long old_req_id) @@ -882,8 +778,7 @@ int zfcp_dbf_adapter_register(struct zfcp_adapter *adapter) /* debug feature area which records SAN command failures and recovery */ sprintf(dbf_name, "zfcp_%s_san", dev_name(&adapter->ccw_device->dev)); - dbf->san = zfcp_dbf_reg(dbf_name, 6, &zfcp_dbf_san_view, - sizeof(struct zfcp_dbf_san_record)); + dbf->san = zfcp_dbf_reg(dbf_name, 3, NULL, sizeof(struct zfcp_dbf_san)); if (!dbf->san) goto err_out; |