diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/scsi/zfcp_aux.c | 82 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_dbf.c | 25 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_dbf.h | 14 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_def.h | 113 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_erp.c | 345 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_ext.h | 9 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_fc.c | 48 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_fc.h | 21 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 51 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.h | 4 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_qdio.c | 11 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_qdio.h | 9 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_reqlist.h | 2 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_scsi.c | 15 |
14 files changed, 431 insertions, 318 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 94f4d8fe85e0..9cf30d124b9e 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -4,7 +4,7 @@ * * Module interface and handling of zfcp data structures. * - * Copyright IBM Corp. 2002, 2013 + * Copyright IBM Corp. 2002, 2017 */ /* @@ -124,6 +124,9 @@ static int __init zfcp_module_init(void) { int retval = -ENOMEM; + if (zfcp_experimental_dix) + pr_warn("DIX is enabled. It is experimental and might cause problems\n"); + zfcp_fsf_qtcb_cache = zfcp_cache_hw_align("zfcp_fsf_qtcb", sizeof(struct fsf_qtcb)); if (!zfcp_fsf_qtcb_cache) @@ -248,43 +251,36 @@ static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter) static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter) { - if (adapter->pool.erp_req) - mempool_destroy(adapter->pool.erp_req); - if (adapter->pool.scsi_req) - mempool_destroy(adapter->pool.scsi_req); - if (adapter->pool.scsi_abort) - mempool_destroy(adapter->pool.scsi_abort); - if (adapter->pool.qtcb_pool) - mempool_destroy(adapter->pool.qtcb_pool); - if (adapter->pool.status_read_req) - mempool_destroy(adapter->pool.status_read_req); - if (adapter->pool.sr_data) - mempool_destroy(adapter->pool.sr_data); - if (adapter->pool.gid_pn) - mempool_destroy(adapter->pool.gid_pn); + mempool_destroy(adapter->pool.erp_req); + mempool_destroy(adapter->pool.scsi_req); + mempool_destroy(adapter->pool.scsi_abort); + mempool_destroy(adapter->pool.qtcb_pool); + mempool_destroy(adapter->pool.status_read_req); + mempool_destroy(adapter->pool.sr_data); + mempool_destroy(adapter->pool.gid_pn); } /** * zfcp_status_read_refill - refill the long running status_read_requests * @adapter: ptr to struct zfcp_adapter for which the buffers should be refilled * - * Returns: 0 on success, 1 otherwise - * - * if there are 16 or more status_read requests missing an adapter_reopen - * is triggered + * Return: + * * 0 on success meaning at least one status read is pending + * * 1 if posting failed and not a single status read buffer is pending, + * also triggers adapter reopen recovery */ int zfcp_status_read_refill(struct zfcp_adapter *adapter) { - while (atomic_read(&adapter->stat_miss) > 0) + while (atomic_add_unless(&adapter->stat_miss, -1, 0)) if (zfcp_fsf_status_read(adapter->qdio)) { + atomic_inc(&adapter->stat_miss); /* undo add -1 */ if (atomic_read(&adapter->stat_miss) >= adapter->stat_read_buf_num) { zfcp_erp_adapter_reopen(adapter, 0, "axsref1"); return 1; } break; - } else - atomic_dec(&adapter->stat_miss); + } return 0; } @@ -542,45 +538,3 @@ err_out: zfcp_ccw_adapter_put(adapter); return ERR_PTR(retval); } - -/** - * zfcp_sg_free_table - free memory used by scatterlists - * @sg: pointer to scatterlist - * @count: number of scatterlist which are to be free'ed - * the scatterlist are expected to reference pages always - */ -void zfcp_sg_free_table(struct scatterlist *sg, int count) -{ - int i; - - for (i = 0; i < count; i++, sg++) - if (sg) - free_page((unsigned long) sg_virt(sg)); - else - break; -} - -/** - * zfcp_sg_setup_table - init scatterlist and allocate, assign buffers - * @sg: pointer to struct scatterlist - * @count: number of scatterlists which should be assigned with buffers - * of size page - * - * Returns: 0 on success, -ENOMEM otherwise - */ -int zfcp_sg_setup_table(struct scatterlist *sg, int count) -{ - void *addr; - int i; - - sg_init_table(sg, count); - for (i = 0; i < count; i++, sg++) { - addr = (void *) get_zeroed_page(GFP_KERNEL); - if (!addr) { - zfcp_sg_free_table(sg, i); - return -ENOMEM; - } - sg_set_buf(sg, addr, PAGE_SIZE); - } - return 0; -} diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c index 3b368fcf13f4..dccdb41bed8c 100644 --- a/drivers/s390/scsi/zfcp_dbf.c +++ b/drivers/s390/scsi/zfcp_dbf.c @@ -63,7 +63,8 @@ void zfcp_dbf_pl_write(struct zfcp_dbf *dbf, void *data, u16 length, char *area, /** * zfcp_dbf_hba_fsf_res - trace event for fsf responses - * @tag: tag indicating which kind of unsolicited status has been received + * @tag: tag indicating which kind of FSF response has been received + * @level: trace level to be used for event * @req: request for which a response was received */ void zfcp_dbf_hba_fsf_res(char *tag, int level, struct zfcp_fsf_req *req) @@ -81,8 +82,8 @@ void zfcp_dbf_hba_fsf_res(char *tag, int level, struct zfcp_fsf_req *req) rec->id = ZFCP_DBF_HBA_RES; rec->fsf_req_id = req->req_id; rec->fsf_req_status = req->status; - rec->fsf_cmd = req->fsf_command; - rec->fsf_seq_no = req->seq_no; + rec->fsf_cmd = q_head->fsf_command; + rec->fsf_seq_no = q_pref->req_seq_no; rec->u.res.req_issued = req->issued; rec->u.res.prot_status = q_pref->prot_status; rec->u.res.fsf_status = q_head->fsf_status; @@ -94,7 +95,7 @@ void zfcp_dbf_hba_fsf_res(char *tag, int level, struct zfcp_fsf_req *req) memcpy(rec->u.res.fsf_status_qual, &q_head->fsf_status_qual, FSF_STATUS_QUALIFIER_SIZE); - if (req->fsf_command != FSF_QTCB_FCP_CMND) { + if (q_head->fsf_command != FSF_QTCB_FCP_CMND) { rec->pl_len = q_head->log_length; zfcp_dbf_pl_write(dbf, (char *)q_pref + q_head->log_start, rec->pl_len, "fsf_res", req->req_id); @@ -127,7 +128,7 @@ void zfcp_dbf_hba_fsf_uss(char *tag, struct zfcp_fsf_req *req) rec->id = ZFCP_DBF_HBA_USS; rec->fsf_req_id = req->req_id; rec->fsf_req_status = req->status; - rec->fsf_cmd = req->fsf_command; + rec->fsf_cmd = FSF_QTCB_UNSOLICITED_STATUS; if (!srb) goto log; @@ -153,7 +154,7 @@ log: /** * zfcp_dbf_hba_bit_err - trace event for bit error conditions - * @tag: tag indicating which kind of unsolicited status has been received + * @tag: tag indicating which kind of bit error unsolicited status was received * @req: request which caused the bit_error condition */ void zfcp_dbf_hba_bit_err(char *tag, struct zfcp_fsf_req *req) @@ -174,7 +175,7 @@ void zfcp_dbf_hba_bit_err(char *tag, struct zfcp_fsf_req *req) rec->id = ZFCP_DBF_HBA_BIT; rec->fsf_req_id = req->req_id; rec->fsf_req_status = req->status; - rec->fsf_cmd = req->fsf_command; + rec->fsf_cmd = FSF_QTCB_UNSOLICITED_STATUS; memcpy(&rec->u.be, &sr_buf->payload.bit_error, sizeof(struct fsf_bit_error_payload)); @@ -224,6 +225,7 @@ void zfcp_dbf_hba_def_err(struct zfcp_adapter *adapter, u64 req_id, u16 scount, /** * zfcp_dbf_hba_basic - trace event for basic adapter events + * @tag: identifier for event * @adapter: pointer to struct zfcp_adapter */ void zfcp_dbf_hba_basic(char *tag, struct zfcp_adapter *adapter) @@ -357,7 +359,7 @@ void zfcp_dbf_rec_run_lvl(int level, char *tag, struct zfcp_erp_action *erp) rec->u.run.fsf_req_id = erp->fsf_req_id; rec->u.run.rec_status = erp->status; rec->u.run.rec_step = erp->step; - rec->u.run.rec_action = erp->action; + rec->u.run.rec_action = erp->type; if (erp->sdev) rec->u.run.rec_count = @@ -478,7 +480,8 @@ out: /** * zfcp_dbf_san_req - trace event for issued SAN request * @tag: identifier for event - * @fsf_req: request containing issued CT data + * @fsf: request containing issued CT or ELS data + * @d_id: N_Port_ID where SAN request is sent to * d_id: destination ID */ void zfcp_dbf_san_req(char *tag, struct zfcp_fsf_req *fsf, u32 d_id) @@ -560,7 +563,7 @@ static u16 zfcp_dbf_san_res_cap_len_if_gpn_ft(char *tag, /** * zfcp_dbf_san_res - trace event for received SAN request * @tag: identifier for event - * @fsf_req: request containing issued CT data + * @fsf: request containing received CT or ELS data */ void zfcp_dbf_san_res(char *tag, struct zfcp_fsf_req *fsf) { @@ -580,7 +583,7 @@ void zfcp_dbf_san_res(char *tag, struct zfcp_fsf_req *fsf) /** * zfcp_dbf_san_in_els - trace event for incoming ELS * @tag: identifier for event - * @fsf_req: request containing issued CT data + * @fsf: request containing received ELS data */ void zfcp_dbf_san_in_els(char *tag, struct zfcp_fsf_req *fsf) { diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h index d116c07ed77a..900c779cc39b 100644 --- a/drivers/s390/scsi/zfcp_dbf.h +++ b/drivers/s390/scsi/zfcp_dbf.h @@ -42,7 +42,8 @@ struct zfcp_dbf_rec_trigger { * @fsf_req_id: request id for fsf requests * @rec_status: status of the fsf request * @rec_step: current step of the recovery action - * rec_count: recovery counter + * @rec_action: ERP action type + * @rec_count: recoveries including retries for particular @rec_action */ struct zfcp_dbf_rec_running { u64 fsf_req_id; @@ -72,6 +73,7 @@ enum zfcp_dbf_rec_id { * @adapter_status: current status of the adapter * @port_status: current status of the port * @lun_status: current status of the lun + * @u: record type specific data * @u.trig: structure zfcp_dbf_rec_trigger * @u.run: structure zfcp_dbf_rec_running */ @@ -126,6 +128,8 @@ struct zfcp_dbf_san { * @prot_status_qual: protocol status qualifier * @fsf_status: fsf status * @fsf_status_qual: fsf status qualifier + * @port_handle: handle for port + * @lun_handle: handle for LUN */ struct zfcp_dbf_hba_res { u64 req_issued; @@ -158,6 +162,7 @@ struct zfcp_dbf_hba_uss { * @ZFCP_DBF_HBA_RES: response trace record * @ZFCP_DBF_HBA_USS: unsolicited status trace record * @ZFCP_DBF_HBA_BIT: bit error trace record + * @ZFCP_DBF_HBA_BASIC: basic adapter event, only trace tag, no other data */ enum zfcp_dbf_hba_id { ZFCP_DBF_HBA_RES = 1, @@ -176,6 +181,9 @@ enum zfcp_dbf_hba_id { * @fsf_seq_no: fsf sequence number * @pl_len: length of payload stored as zfcp_dbf_pay * @u: record type specific data + * @u.res: data for fsf responses + * @u.uss: data for unsolicited status buffer + * @u.be: data for bit error unsolicited status buffer */ struct zfcp_dbf_hba { u8 id; @@ -339,8 +347,8 @@ void zfcp_dbf_hba_fsf_response(struct zfcp_fsf_req *req) zfcp_dbf_hba_fsf_resp_suppress(req) ? 5 : 1, req); - } else if ((req->fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) || - (req->fsf_command == FSF_QTCB_OPEN_LUN)) { + } else if ((qtcb->header.fsf_command == FSF_QTCB_OPEN_PORT_WITH_DID) || + (qtcb->header.fsf_command == FSF_QTCB_OPEN_LUN)) { zfcp_dbf_hba_fsf_resp("fs_open", 4, req); } else if (qtcb->header.log_length) { diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 3396a47721a7..87d2f47a6990 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -4,7 +4,7 @@ * * Global definitions for the zfcp device driver. * - * Copyright IBM Corp. 2002, 2010 + * Copyright IBM Corp. 2002, 2017 */ #ifndef ZFCP_DEF_H @@ -41,24 +41,16 @@ #include "zfcp_fc.h" #include "zfcp_qdio.h" -struct zfcp_reqlist; - -/********************* SCSI SPECIFIC DEFINES *********************************/ -#define ZFCP_SCSI_ER_TIMEOUT (10*HZ) - /********************* FSF SPECIFIC DEFINES *********************************/ /* ATTENTION: value must not be used by hardware */ #define FSF_QTCB_UNSOLICITED_STATUS 0x6305 -/* timeout value for "default timer" for fsf requests */ -#define ZFCP_FSF_REQUEST_TIMEOUT (60*HZ) - /*************** ADAPTER/PORT/UNIT AND FSF_REQ STATUS FLAGS ******************/ /* - * Note, the leftmost status byte is common among adapter, port - * and unit + * Note, the leftmost 12 status bits (3 nibbles) are common among adapter, port + * and unit. This is a mask for bitwise 'and' with status values. */ #define ZFCP_COMMON_FLAGS 0xfff00000 @@ -97,49 +89,60 @@ struct zfcp_reqlist; /************************* STRUCTURE DEFINITIONS *****************************/ -struct zfcp_fsf_req; +/** + * enum zfcp_erp_act_type - Type of ERP action object. + * @ZFCP_ERP_ACTION_REOPEN_LUN: LUN recovery. + * @ZFCP_ERP_ACTION_REOPEN_PORT: Port recovery. + * @ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: Forced port recovery. + * @ZFCP_ERP_ACTION_REOPEN_ADAPTER: Adapter recovery. + * + * Values must fit into u8 because of code dependencies: + * zfcp_dbf_rec_trig(), &zfcp_dbf_rec_trigger.want, &zfcp_dbf_rec_trigger.need; + * zfcp_dbf_rec_run_lvl(), zfcp_dbf_rec_run(), &zfcp_dbf_rec_running.rec_action. + */ +enum zfcp_erp_act_type { + ZFCP_ERP_ACTION_REOPEN_LUN = 1, + ZFCP_ERP_ACTION_REOPEN_PORT = 2, + ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3, + ZFCP_ERP_ACTION_REOPEN_ADAPTER = 4, +}; -/* holds various memory pools of an adapter */ -struct zfcp_adapter_mempool { - mempool_t *erp_req; - mempool_t *gid_pn_req; - mempool_t *scsi_req; - mempool_t *scsi_abort; - mempool_t *status_read_req; - mempool_t *sr_data; - mempool_t *gid_pn; - mempool_t *qtcb_pool; +/* + * Values must fit into u16 because of code dependencies: + * zfcp_dbf_rec_run_lvl(), zfcp_dbf_rec_run(), zfcp_dbf_rec_run_wka(), + * &zfcp_dbf_rec_running.rec_step. + */ +enum zfcp_erp_steps { + ZFCP_ERP_STEP_UNINITIALIZED = 0x0000, + ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010, + ZFCP_ERP_STEP_PORT_CLOSING = 0x0100, + ZFCP_ERP_STEP_PORT_OPENING = 0x0800, + ZFCP_ERP_STEP_LUN_CLOSING = 0x1000, + ZFCP_ERP_STEP_LUN_OPENING = 0x2000, }; struct zfcp_erp_action { struct list_head list; - int action; /* requested action code */ + enum zfcp_erp_act_type type; /* requested action code */ struct zfcp_adapter *adapter; /* device which should be recovered */ struct zfcp_port *port; struct scsi_device *sdev; u32 status; /* recovery status */ - u32 step; /* active step of this erp action */ + enum zfcp_erp_steps step; /* active step of this erp action */ unsigned long fsf_req_id; struct timer_list timer; }; -struct fsf_latency_record { - u32 min; - u32 max; - u64 sum; -}; - -struct latency_cont { - struct fsf_latency_record channel; - struct fsf_latency_record fabric; - u64 counter; -}; - -struct zfcp_latencies { - struct latency_cont read; - struct latency_cont write; - struct latency_cont cmd; - spinlock_t lock; +/* holds various memory pools of an adapter */ +struct zfcp_adapter_mempool { + mempool_t *erp_req; + mempool_t *gid_pn_req; + mempool_t *scsi_req; + mempool_t *scsi_abort; + mempool_t *status_read_req; + mempool_t *sr_data; + mempool_t *gid_pn; + mempool_t *qtcb_pool; }; struct zfcp_adapter { @@ -220,6 +223,25 @@ struct zfcp_port { unsigned int starget_id; }; +struct zfcp_latency_record { + u32 min; + u32 max; + u64 sum; +}; + +struct zfcp_latency_cont { + struct zfcp_latency_record channel; + struct zfcp_latency_record fabric; + u64 counter; +}; + +struct zfcp_latencies { + struct zfcp_latency_cont read; + struct zfcp_latency_cont write; + struct zfcp_latency_cont cmd; + spinlock_t lock; +}; + /** * struct zfcp_unit - LUN configured via zfcp sysfs * @dev: struct device for sysfs representation and reference counting @@ -287,9 +309,7 @@ static inline u64 zfcp_scsi_dev_lun(struct scsi_device *sdev) * @qdio_req: qdio queue related values * @completion: used to signal the completion of the request * @status: status of the request - * @fsf_command: FSF command issued * @qtcb: associated QTCB - * @seq_no: sequence number of this request * @data: private data * @timer: timer data of this request * @erp_action: reference to erp action if request issued on behalf of ERP @@ -304,9 +324,7 @@ struct zfcp_fsf_req { struct zfcp_qdio_req qdio_req; struct completion completion; u32 status; - u32 fsf_command; struct fsf_qtcb *qtcb; - u32 seq_no; void *data; struct timer_list timer; struct zfcp_erp_action *erp_action; @@ -321,4 +339,9 @@ int zfcp_adapter_multi_buffer_active(struct zfcp_adapter *adapter) return atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_MB_ACT; } +static inline bool zfcp_fsf_req_is_status_read_buffer(struct zfcp_fsf_req *req) +{ + return req->qtcb == NULL; +} + #endif /* ZFCP_DEF_H */ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index e7e6b63905e2..744a64680d5b 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -4,7 +4,7 @@ * * Error Recovery Procedures (ERP). * - * Copyright IBM Corp. 2002, 2016 + * Copyright IBM Corp. 2002, 2017 */ #define KMSG_COMPONENT "zfcp" @@ -24,38 +24,18 @@ enum zfcp_erp_act_flags { ZFCP_STATUS_ERP_NO_REF = 0x00800000, }; -enum zfcp_erp_steps { - ZFCP_ERP_STEP_UNINITIALIZED = 0x0000, - ZFCP_ERP_STEP_PHYS_PORT_CLOSING = 0x0010, - ZFCP_ERP_STEP_PORT_CLOSING = 0x0100, - ZFCP_ERP_STEP_PORT_OPENING = 0x0800, - ZFCP_ERP_STEP_LUN_CLOSING = 0x1000, - ZFCP_ERP_STEP_LUN_OPENING = 0x2000, -}; - -/** - * enum zfcp_erp_act_type - Type of ERP action object. - * @ZFCP_ERP_ACTION_REOPEN_LUN: LUN recovery. - * @ZFCP_ERP_ACTION_REOPEN_PORT: Port recovery. - * @ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: Forced port recovery. - * @ZFCP_ERP_ACTION_REOPEN_ADAPTER: Adapter recovery. - * @ZFCP_ERP_ACTION_NONE: Eyecatcher pseudo flag to bitwise or-combine with - * either of the first four enum values. - * Used to indicate that an ERP action could not be - * set up despite a detected need for some recovery. - * @ZFCP_ERP_ACTION_FAILED: Eyecatcher pseudo flag to bitwise or-combine with - * either of the first four enum values. - * Used to indicate that ERP not needed because - * the object has ZFCP_STATUS_COMMON_ERP_FAILED. +/* + * Eyecatcher pseudo flag to bitwise or-combine with enum zfcp_erp_act_type. + * Used to indicate that an ERP action could not be set up despite a detected + * need for some recovery. */ -enum zfcp_erp_act_type { - ZFCP_ERP_ACTION_REOPEN_LUN = 1, - ZFCP_ERP_ACTION_REOPEN_PORT = 2, - ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3, - ZFCP_ERP_ACTION_REOPEN_ADAPTER = 4, - ZFCP_ERP_ACTION_NONE = 0xc0, - ZFCP_ERP_ACTION_FAILED = 0xe0, -}; +#define ZFCP_ERP_ACTION_NONE 0xc0 +/* + * Eyecatcher pseudo flag to bitwise or-combine with enum zfcp_erp_act_type. + * Used to indicate that ERP not needed because the object has + * ZFCP_STATUS_COMMON_ERP_FAILED. + */ +#define ZFCP_ERP_ACTION_FAILED 0xe0 enum zfcp_erp_act_result { ZFCP_ERP_SUCCEEDED = 0, @@ -136,11 +116,11 @@ static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter) } } -static int zfcp_erp_handle_failed(int want, struct zfcp_adapter *adapter, - struct zfcp_port *port, - struct scsi_device *sdev) +static enum zfcp_erp_act_type zfcp_erp_handle_failed( + enum zfcp_erp_act_type want, struct zfcp_adapter *adapter, + struct zfcp_port *port, struct scsi_device *sdev) { - int need = want; + enum zfcp_erp_act_type need = want; struct zfcp_scsi_dev *zsdev; switch (want) { @@ -171,19 +151,17 @@ static int zfcp_erp_handle_failed(int want, struct zfcp_adapter *adapter, adapter, ZFCP_STATUS_COMMON_ERP_FAILED); } break; - default: - need = 0; - break; } return need; } -static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter, +static enum zfcp_erp_act_type zfcp_erp_required_act(enum zfcp_erp_act_type want, + struct zfcp_adapter *adapter, struct zfcp_port *port, struct scsi_device *sdev) { - int need = want; + enum zfcp_erp_act_type need = want; int l_status, p_status, a_status; struct zfcp_scsi_dev *zfcp_sdev; @@ -230,7 +208,8 @@ static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter, return need; } -static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status, +static struct zfcp_erp_action *zfcp_erp_setup_act(enum zfcp_erp_act_type need, + u32 act_status, struct zfcp_adapter *adapter, struct zfcp_port *port, struct scsi_device *sdev) @@ -278,9 +257,6 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status, ZFCP_STATUS_COMMON_RUNNING)) act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY; break; - - default: - return NULL; } WARN_ON_ONCE(erp_action->adapter != adapter); @@ -288,18 +264,19 @@ static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status, memset(&erp_action->timer, 0, sizeof(erp_action->timer)); erp_action->step = ZFCP_ERP_STEP_UNINITIALIZED; erp_action->fsf_req_id = 0; - erp_action->action = need; + erp_action->type = need; erp_action->status = act_status; return erp_action; } -static void zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter, +static void zfcp_erp_action_enqueue(enum zfcp_erp_act_type want, + struct zfcp_adapter *adapter, struct zfcp_port *port, struct scsi_device *sdev, - char *id, u32 act_status) + char *dbftag, u32 act_status) { - int need; + enum zfcp_erp_act_type need; struct zfcp_erp_action *act; need = zfcp_erp_handle_failed(want, adapter, port, sdev); @@ -327,10 +304,11 @@ static void zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter, list_add_tail(&act->list, &adapter->erp_ready_head); wake_up(&adapter->erp_ready_wq); out: - zfcp_dbf_rec_trig(id, adapter, port, sdev, want, need); + zfcp_dbf_rec_trig(dbftag, adapter, port, sdev, want, need); } -void zfcp_erp_port_forced_no_port_dbf(char *id, struct zfcp_adapter *adapter, +void zfcp_erp_port_forced_no_port_dbf(char *dbftag, + struct zfcp_adapter *adapter, u64 port_name, u32 port_id) { unsigned long flags; @@ -344,29 +322,30 @@ void zfcp_erp_port_forced_no_port_dbf(char *id, struct zfcp_adapter *adapter, atomic_set(&tmpport.status, -1); /* unknown */ tmpport.wwpn = port_name; tmpport.d_id = port_id; - zfcp_dbf_rec_trig(id, adapter, &tmpport, NULL, + zfcp_dbf_rec_trig(dbftag, adapter, &tmpport, NULL, ZFCP_ERP_ACTION_REOPEN_PORT_FORCED, ZFCP_ERP_ACTION_NONE); write_unlock_irqrestore(&adapter->erp_lock, flags); } static void _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, - int clear_mask, char *id) + int clear_mask, char *dbftag) { zfcp_erp_adapter_block(adapter, clear_mask); zfcp_scsi_schedule_rports_block(adapter); zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER, - adapter, NULL, NULL, id, 0); + adapter, NULL, NULL, dbftag, 0); } /** * zfcp_erp_adapter_reopen - Reopen adapter. * @adapter: Adapter to reopen. * @clear: Status flags to clear. - * @id: Id for debug trace event. + * @dbftag: Tag for debug trace event. */ -void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear, char *id) +void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear, + char *dbftag) { unsigned long flags; @@ -375,7 +354,7 @@ void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear, char *id) write_lock_irqsave(&adapter->erp_lock, flags); zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER, adapter, - NULL, NULL, id, 0); + NULL, NULL, dbftag, 0); write_unlock_irqrestore(&adapter->erp_lock, flags); } @@ -383,25 +362,25 @@ void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear, char *id) * zfcp_erp_adapter_shutdown - Shutdown adapter. * @adapter: Adapter to shut down. * @clear: Status flags to clear. - * @id: Id for debug trace event. + * @dbftag: Tag for debug trace event. */ void zfcp_erp_adapter_shutdown(struct zfcp_adapter *adapter, int clear, - char *id) + char *dbftag) { int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED; - zfcp_erp_adapter_reopen(adapter, clear | flags, id); + zfcp_erp_adapter_reopen(adapter, clear | flags, dbftag); } /** * zfcp_erp_port_shutdown - Shutdown port * @port: Port to shut down. * @clear: Status flags to clear. - * @id: Id for debug trace event. + * @dbftag: Tag for debug trace event. */ -void zfcp_erp_port_shutdown(struct zfcp_port *port, int clear, char *id) +void zfcp_erp_port_shutdown(struct zfcp_port *port, int clear, char *dbftag) { int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED; - zfcp_erp_port_reopen(port, clear | flags, id); + zfcp_erp_port_reopen(port, clear | flags, dbftag); } static void zfcp_erp_port_block(struct zfcp_port *port, int clear) @@ -411,53 +390,55 @@ static void zfcp_erp_port_block(struct zfcp_port *port, int clear) } static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, - char *id) + char *dbftag) { zfcp_erp_port_block(port, clear); zfcp_scsi_schedule_rport_block(port); zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT_FORCED, - port->adapter, port, NULL, id, 0); + port->adapter, port, NULL, dbftag, 0); } /** * zfcp_erp_port_forced_reopen - Forced close of port and open again * @port: Port to force close and to reopen. * @clear: Status flags to clear. - * @id: Id for debug trace event. + * @dbftag: Tag for debug trace event. */ -void zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, char *id) +void zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, + char *dbftag) { unsigned long flags; struct zfcp_adapter *adapter = port->adapter; write_lock_irqsave(&adapter->erp_lock, flags); - _zfcp_erp_port_forced_reopen(port, clear, id); + _zfcp_erp_port_forced_reopen(port, clear, dbftag); write_unlock_irqrestore(&adapter->erp_lock, flags); } -static void _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id) +static void _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, + char *dbftag) { zfcp_erp_port_block(port, clear); zfcp_scsi_schedule_rport_block(port); zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT, - port->adapter, port, NULL, id, 0); + port->adapter, port, NULL, dbftag, 0); } /** * zfcp_erp_port_reopen - trigger remote port recovery * @port: port to recover - * @clear_mask: flags in port status to be cleared - * @id: Id for debug trace event. + * @clear: flags in port status to be cleared + * @dbftag: Tag for debug trace event. */ -void zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id) +void zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *dbftag) { unsigned long flags; struct zfcp_adapter *adapter = port->adapter; write_lock_irqsave(&adapter->erp_lock, flags); - _zfcp_erp_port_reopen(port, clear, id); + _zfcp_erp_port_reopen(port, clear, dbftag); write_unlock_irqrestore(&adapter->erp_lock, flags); } @@ -467,8 +448,8 @@ static void zfcp_erp_lun_block(struct scsi_device *sdev, int clear_mask) ZFCP_STATUS_COMMON_UNBLOCKED | clear_mask); } -static void _zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id, - u32 act_status) +static void _zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, + char *dbftag, u32 act_status) { struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; @@ -476,18 +457,18 @@ static void _zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id, zfcp_erp_lun_block(sdev, clear); zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_LUN, adapter, - zfcp_sdev->port, sdev, id, act_status); + zfcp_sdev->port, sdev, dbftag, act_status); } /** * zfcp_erp_lun_reopen - initiate reopen of a LUN * @sdev: SCSI device / LUN to be reopened - * @clear_mask: specifies flags in LUN status to be cleared - * @id: Id for debug trace event. + * @clear: specifies flags in LUN status to be cleared + * @dbftag: Tag for debug trace event. * * Return: 0 on success, < 0 on error */ -void zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id) +void zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *dbftag) { unsigned long flags; struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); @@ -495,7 +476,7 @@ void zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id) struct zfcp_adapter *adapter = port->adapter; write_lock_irqsave(&adapter->erp_lock, flags); - _zfcp_erp_lun_reopen(sdev, clear, id, 0); + _zfcp_erp_lun_reopen(sdev, clear, dbftag, 0); write_unlock_irqrestore(&adapter->erp_lock, flags); } @@ -503,25 +484,25 @@ void zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id) * zfcp_erp_lun_shutdown - Shutdown LUN * @sdev: SCSI device / LUN to shut down. * @clear: Status flags to clear. - * @id: Id for debug trace event. + * @dbftag: Tag for debug trace event. */ -void zfcp_erp_lun_shutdown(struct scsi_device *sdev, int clear, char *id) +void zfcp_erp_lun_shutdown(struct scsi_device *sdev, int clear, char *dbftag) { int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED; - zfcp_erp_lun_reopen(sdev, clear | flags, id); + zfcp_erp_lun_reopen(sdev, clear | flags, dbftag); } /** * zfcp_erp_lun_shutdown_wait - Shutdown LUN and wait for erp completion * @sdev: SCSI device / LUN to shut down. - * @id: Id for debug trace event. + * @dbftag: Tag for debug trace event. * * Do not acquire a reference for the LUN when creating the ERP * action. It is safe, because this function waits for the ERP to * complete first. This allows to shutdown the LUN, even when the SCSI * device is in the state SDEV_DEL when scsi_device_get will fail. */ -void zfcp_erp_lun_shutdown_wait(struct scsi_device *sdev, char *id) +void zfcp_erp_lun_shutdown_wait(struct scsi_device *sdev, char *dbftag) { unsigned long flags; struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); @@ -530,7 +511,7 @@ void zfcp_erp_lun_shutdown_wait(struct scsi_device *sdev, char *id) int clear = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED; write_lock_irqsave(&adapter->erp_lock, flags); - _zfcp_erp_lun_reopen(sdev, clear, id, ZFCP_STATUS_ERP_NO_REF); + _zfcp_erp_lun_reopen(sdev, clear, dbftag, ZFCP_STATUS_ERP_NO_REF); write_unlock_irqrestore(&adapter->erp_lock, flags); zfcp_erp_wait(adapter); @@ -619,7 +600,7 @@ void zfcp_erp_notify(struct zfcp_erp_action *erp_action, unsigned long set_mask) /** * zfcp_erp_timeout_handler - Trigger ERP action from timed out ERP request - * @data: ERP action (from timer data) + * @t: timer list entry embedded in zfcp FSF request */ void zfcp_erp_timeout_handler(struct timer_list *t) { @@ -644,31 +625,31 @@ static void zfcp_erp_strategy_memwait(struct zfcp_erp_action *erp_action) } static void _zfcp_erp_port_reopen_all(struct zfcp_adapter *adapter, - int clear, char *id) + int clear, char *dbftag) { struct zfcp_port *port; read_lock(&adapter->port_list_lock); list_for_each_entry(port, &adapter->port_list, list) - _zfcp_erp_port_reopen(port, clear, id); + _zfcp_erp_port_reopen(port, clear, dbftag); read_unlock(&adapter->port_list_lock); } static void _zfcp_erp_lun_reopen_all(struct zfcp_port *port, int clear, - char *id) + char *dbftag) { struct scsi_device *sdev; spin_lock(port->adapter->scsi_host->host_lock); __shost_for_each_device(sdev, port->adapter->scsi_host) if (sdev_to_zfcp(sdev)->port == port) - _zfcp_erp_lun_reopen(sdev, clear, id, 0); + _zfcp_erp_lun_reopen(sdev, clear, dbftag, 0); spin_unlock(port->adapter->scsi_host->host_lock); } static void zfcp_erp_strategy_followup_failed(struct zfcp_erp_action *act) { - switch (act->action) { + switch (act->type) { case ZFCP_ERP_ACTION_REOPEN_ADAPTER: _zfcp_erp_adapter_reopen(act->adapter, 0, "ersff_1"); break; @@ -686,7 +667,7 @@ static void zfcp_erp_strategy_followup_failed(struct zfcp_erp_action *act) static void zfcp_erp_strategy_followup_success(struct zfcp_erp_action *act) { - switch (act->action) { + switch (act->type) { case ZFCP_ERP_ACTION_REOPEN_ADAPTER: _zfcp_erp_port_reopen_all(act->adapter, 0, "ersfs_1"); break; @@ -696,6 +677,9 @@ static void zfcp_erp_strategy_followup_success(struct zfcp_erp_action *act) case ZFCP_ERP_ACTION_REOPEN_PORT: _zfcp_erp_lun_reopen_all(act->port, 0, "ersfs_3"); break; + case ZFCP_ERP_ACTION_REOPEN_LUN: + /* NOP */ + break; } } @@ -723,7 +707,8 @@ static void zfcp_erp_enqueue_ptp_port(struct zfcp_adapter *adapter) _zfcp_erp_port_reopen(port, 0, "ereptp1"); } -static int zfcp_erp_adapter_strat_fsf_xconf(struct zfcp_er |