From fc90adaf05ada86d3fcd145045eac32ad81f41e9 Mon Sep 17 00:00:00 2001 From: Joe Carnuccio Date: Wed, 6 Jul 2016 11:14:23 -0400 Subject: [PATCH] qla2xxx: Properly initialize IO statistics. Properly initialize IO statistics to avoid initial 0xFFFFFFF (-1) values. Cleanup/simplify usage of pointer to statistics structure. Signed-off-by: Joe Carnuccio Signed-off-by: Himanshu Madhani Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/qla2xxx/qla_attr.c | 50 +++++++++++++++---------------- drivers/scsi/qla2xxx/qla_def.h | 1 - drivers/scsi/qla2xxx/qla_init.c | 3 ++ drivers/scsi/qla2xxx/qla_target.c | 16 +++++----- 4 files changed, 36 insertions(+), 34 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index c9bcd82f08bc..e0256a411cd5 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -1811,10 +1811,9 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost) int rval; struct link_statistics *stats; dma_addr_t stats_dma; - struct fc_host_statistics *pfc_host_stat; + struct fc_host_statistics *p = &vha->fc_host_stat; - pfc_host_stat = &vha->fc_host_stat; - memset(pfc_host_stat, -1, sizeof(struct fc_host_statistics)); + memset(p, -1, sizeof(*p)); if (IS_QLAFX00(vha->hw)) goto done; @@ -1850,37 +1849,37 @@ qla2x00_get_fc_host_stats(struct Scsi_Host *shost) if (rval != QLA_SUCCESS) goto done_free; - pfc_host_stat->link_failure_count = stats->link_fail_cnt; - pfc_host_stat->loss_of_sync_count = stats->loss_sync_cnt; - pfc_host_stat->loss_of_signal_count = stats->loss_sig_cnt; - pfc_host_stat->prim_seq_protocol_err_count = stats->prim_seq_err_cnt; - pfc_host_stat->invalid_tx_word_count = stats->inval_xmit_word_cnt; - pfc_host_stat->invalid_crc_count = stats->inval_crc_cnt; + p->link_failure_count = stats->link_fail_cnt; + p->loss_of_sync_count = stats->loss_sync_cnt; + p->loss_of_signal_count = stats->loss_sig_cnt; + p->prim_seq_protocol_err_count = stats->prim_seq_err_cnt; + p->invalid_tx_word_count = stats->inval_xmit_word_cnt; + p->invalid_crc_count = stats->inval_crc_cnt; if (IS_FWI2_CAPABLE(ha)) { - pfc_host_stat->lip_count = stats->lip_cnt; - pfc_host_stat->tx_frames = stats->tx_frames; - pfc_host_stat->rx_frames = stats->rx_frames; - pfc_host_stat->dumped_frames = stats->discarded_frames; - pfc_host_stat->nos_count = stats->nos_rcvd; - pfc_host_stat->error_frames = + p->lip_count = stats->lip_cnt; + p->tx_frames = stats->tx_frames; + p->rx_frames = stats->rx_frames; + p->dumped_frames = stats->discarded_frames; + p->nos_count = stats->nos_rcvd; + p->error_frames = stats->dropped_frames + stats->discarded_frames; - pfc_host_stat->rx_words = vha->qla_stats.input_bytes; - pfc_host_stat->tx_words = vha->qla_stats.output_bytes; + p->rx_words = vha->qla_stats.input_bytes; + p->tx_words = vha->qla_stats.output_bytes; } - pfc_host_stat->fcp_control_requests = vha->qla_stats.control_requests; - pfc_host_stat->fcp_input_requests = vha->qla_stats.input_requests; - pfc_host_stat->fcp_output_requests = vha->qla_stats.output_requests; - pfc_host_stat->fcp_input_megabytes = vha->qla_stats.input_bytes >> 20; - pfc_host_stat->fcp_output_megabytes = vha->qla_stats.output_bytes >> 20; - pfc_host_stat->seconds_since_last_reset = + p->fcp_control_requests = vha->qla_stats.control_requests; + p->fcp_input_requests = vha->qla_stats.input_requests; + p->fcp_output_requests = vha->qla_stats.output_requests; + p->fcp_input_megabytes = vha->qla_stats.input_bytes >> 20; + p->fcp_output_megabytes = vha->qla_stats.output_bytes >> 20; + p->seconds_since_last_reset = get_jiffies_64() - vha->qla_stats.jiffies_at_last_reset; - do_div(pfc_host_stat->seconds_since_last_reset, HZ); + do_div(p->seconds_since_last_reset, HZ); done_free: dma_free_coherent(&ha->pdev->dev, sizeof(struct link_statistics), stats, stats_dma); done: - return pfc_host_stat; + return p; } static void @@ -1888,6 +1887,7 @@ qla2x00_reset_host_stats(struct Scsi_Host *shost) { scsi_qla_host_t *vha = shost_priv(shost); + memset(&vha->qla_stats, 0, sizeof(vha->qla_stats)); memset(&vha->fc_host_stat, 0, sizeof(vha->fc_host_stat)); vha->qla_stats.jiffies_at_last_reset = get_jiffies_64(); diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 2b7e4f5574bb..a73ecc780e1a 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -3508,7 +3508,6 @@ struct qla_hw_data { int cur_vport_count; struct qla_chip_state_84xx *cs84xx; - struct qla_statistics qla_stats; struct isp_operations *isp_ops; struct workqueue_struct *wq; struct qlfc_fw fw_buf; diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index a3685b683688..68e9309aa5d4 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -624,6 +624,9 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha) struct qla_hw_data *ha = vha->hw; struct req_que *req = ha->req_q_map[0]; + memset(&vha->qla_stats, 0, sizeof(vha->qla_stats)); + memset(&vha->fc_host_stat, 0, sizeof(vha->fc_host_stat)); + /* Clear adapter flags. */ vha->flags.online = 0; ha->flags.chip_reset_done = 0; diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index ca39deb4ff5b..bff9689f5ca9 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -215,8 +215,8 @@ static inline void qlt_incr_num_pend_cmds(struct scsi_qla_host *vha) spin_lock_irqsave(&vha->hw->tgt.q_full_lock, flags); vha->hw->tgt.num_pend_cmds++; - if (vha->hw->tgt.num_pend_cmds > vha->hw->qla_stats.stat_max_pend_cmds) - vha->hw->qla_stats.stat_max_pend_cmds = + if (vha->hw->tgt.num_pend_cmds > vha->qla_stats.stat_max_pend_cmds) + vha->qla_stats.stat_max_pend_cmds = vha->hw->tgt.num_pend_cmds; spin_unlock_irqrestore(&vha->hw->tgt.q_full_lock, flags); } @@ -5231,8 +5231,8 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, if ((vha->hw->tgt.num_qfull_cmds_alloc + 1) > MAX_QFULL_CMDS_ALLOC) { vha->hw->tgt.num_qfull_cmds_dropped++; if (vha->hw->tgt.num_qfull_cmds_dropped > - vha->hw->qla_stats.stat_max_qfull_cmds_dropped) - vha->hw->qla_stats.stat_max_qfull_cmds_dropped = + vha->qla_stats.stat_max_qfull_cmds_dropped) + vha->qla_stats.stat_max_qfull_cmds_dropped = vha->hw->tgt.num_qfull_cmds_dropped; ql_dbg(ql_dbg_io, vha, 0x3068, @@ -5263,8 +5263,8 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, vha->hw->tgt.num_qfull_cmds_dropped++; if (vha->hw->tgt.num_qfull_cmds_dropped > - vha->hw->qla_stats.stat_max_qfull_cmds_dropped) - vha->hw->qla_stats.stat_max_qfull_cmds_dropped = + vha->qla_stats.stat_max_qfull_cmds_dropped) + vha->qla_stats.stat_max_qfull_cmds_dropped = vha->hw->tgt.num_qfull_cmds_dropped; qlt_chk_exch_leak_thresh_hold(vha); @@ -5293,8 +5293,8 @@ qlt_alloc_qfull_cmd(struct scsi_qla_host *vha, vha->hw->tgt.num_qfull_cmds_alloc++; if (vha->hw->tgt.num_qfull_cmds_alloc > - vha->hw->qla_stats.stat_max_qfull_cmds_alloc) - vha->hw->qla_stats.stat_max_qfull_cmds_alloc = + vha->qla_stats.stat_max_qfull_cmds_alloc) + vha->qla_stats.stat_max_qfull_cmds_alloc = vha->hw->tgt.num_qfull_cmds_alloc; }