Following counters are added in target mode to help debugging efforts.
Target Counters
qla_core_sbt_cmd = 0
qla_core_ret_sta_ctio = 0
qla_core_ret_ctio = 0
core_qla_que_buf = 0
core_qla_snd_status = 0
core_qla_free_cmd = 0
num alloc iocb failed = 0
num term exchange sent = 0
num Q full sent = 0
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Signed-off-by: Giridhar Malavali <giridhar.malavali@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_def.h | 15 +++++++++
drivers/scsi/qla2xxx/qla_dfs.c | 56 ++++++++++++++++++++++++++++++++++++
drivers/scsi/qla2xxx/qla_iocb.c | 1 +
drivers/scsi/qla2xxx/qla_target.c | 7 ++++
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 4 ++
5 files changed, 83 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 787f901..a87e42b 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3316,6 +3316,8 @@ struct qla_hw_data {
uint32_t chain_offset;
struct dentry *dfs_dir;
struct dentry *dfs_fce;
+ struct dentry *dfs_tgt_counters;
+
dma_addr_t fce_dma;
void *fce;
uint32_t fce_bufs;
@@ -3473,6 +3475,18 @@ struct qla_hw_data {
int allow_cna_fw_dump;
};
+struct qla_tgt_counters {
+ uint64_t qla_core_sbt_cmd;
+ uint64_t core_qla_que_buf;
+ uint64_t qla_core_ret_ctio;
+ uint64_t core_qla_snd_status;
+ uint64_t qla_core_ret_sta_ctio;
+ uint64_t core_qla_free_cmd;
+ uint64_t num_q_full_sent;
+ uint64_t num_alloc_iocb_failed;
+ uint64_t num_term_xchg_sent;
+};
+
/*
* Qlogic scsi host structure
*/
@@ -3615,6 +3629,7 @@ typedef struct scsi_qla_host {
atomic_t vref_count;
struct qla8044_reset_template reset_tmplt;
+ struct qla_tgt_counters tgt_counters;
} scsi_qla_host_t;
#define SET_VP_IDX 1
diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index 15cf074..2f50c08 100644
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -13,6 +13,48 @@ static struct dentry *qla2x00_dfs_root;
static atomic_t qla2x00_dfs_root_count;
static int
+qla_dfs_tgt_counters_show(struct seq_file *s, void *unused)
+{
+ struct scsi_qla_host *vha = s->private;
+
+ seq_puts(s, "Target Counters\n");
+ seq_printf(s, "qla_core_sbt_cmd = %lld\n",
+ vha->tgt_counters.qla_core_sbt_cmd);
+ seq_printf(s, "qla_core_ret_sta_ctio = %lld\n",
+ vha->tgt_counters.qla_core_ret_sta_ctio);
+ seq_printf(s, "qla_core_ret_ctio = %lld\n",
+ vha->tgt_counters.qla_core_ret_ctio);
+ seq_printf(s, "core_qla_que_buf = %lld\n",
+ vha->tgt_counters.core_qla_que_buf);
+ seq_printf(s, "core_qla_snd_status = %lld\n",
+ vha->tgt_counters.core_qla_snd_status);
+ seq_printf(s, "core_qla_free_cmd = %lld\n",
+ vha->tgt_counters.core_qla_free_cmd);
+ seq_printf(s, "num alloc iocb failed = %lld\n",
+ vha->tgt_counters.num_alloc_iocb_failed);
+ seq_printf(s, "num term exchange sent = %lld\n",
+ vha->tgt_counters.num_term_xchg_sent);
+ seq_printf(s, "num Q full sent = %lld\n",
+ vha->tgt_counters.num_q_full_sent);
+
+ return 0;
+}
+
+static int
+qla_dfs_tgt_counters_open(struct inode *inode, struct file *file)
+{
+ struct scsi_qla_host *vha = inode->i_private;
+ return single_open(file, qla_dfs_tgt_counters_show, vha);
+}
+
+static const struct file_operations dfs_tgt_counters_ops = {
+ .open = qla_dfs_tgt_counters_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int
qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
{
scsi_qla_host_t *vha = s->private;
@@ -146,6 +188,14 @@ create_dir:
atomic_inc(&qla2x00_dfs_root_count);
create_nodes:
+ ha->dfs_tgt_counters = debugfs_create_file("tgt_counters", S_IRUSR,
+ ha->dfs_dir, vha, &dfs_tgt_counters_ops);
+ if (!ha->dfs_tgt_counters) {
+ ql_log(ql_log_warn, vha, 0x00fc,
+ "Unable to create debugFS tgt_counters node.\n");
+ goto out;
+ }
+
ha->dfs_fce = debugfs_create_file("fce", S_IRUSR, ha->dfs_dir, vha,
&dfs_fce_ops);
if (!ha->dfs_fce) {
@@ -161,6 +211,12 @@ int
qla2x00_dfs_remove(scsi_qla_host_t *vha)
{
struct qla_hw_data *ha = vha->hw;
+
+ if (ha->dfs_tgt_counters) {
+ debugfs_remove(ha->dfs_tgt_counters);
+ ha->dfs_tgt_counters = NULL;
+ }
+
if (ha->dfs_fce) {
debugfs_remove(ha->dfs_fce);
ha->dfs_fce = NULL;
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index a1ab25f..333910e 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -1892,6 +1892,7 @@ skip_cmd_array:
}
queuing_error:
+ vha->tgt_counters.num_alloc_iocb_failed++;
return pkt;
}
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 7c43cf8..ec76da4 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -2317,6 +2317,11 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (xmit_type == QLA_TGT_XMIT_STATUS)
+ vha->tgt_counters.core_qla_snd_status++;
+ else
+ vha->tgt_counters.core_qla_que_buf++;
+
if (qla2x00_reset_active(vha) || cmd->reset_count != ha->chip_reset) {
/*
* Either a chip reset is active or this request was from
@@ -2681,6 +2686,7 @@ static int __qlt_send_term_exchange(struct scsi_qla_host *vha,
ret = 1;
}
+ vha->tgt_counters.num_term_xchg_sent++;
pkt->entry_count = 1;
pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
@@ -4319,6 +4325,7 @@ static int __qlt_send_busy(struct scsi_qla_host *vha,
return -ENOMEM;
}
+ vha->tgt_counters.num_q_full_sent++;
pkt->entry_count = 1;
pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK;
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index e9893e7..8c39edb 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -401,6 +401,7 @@ static void tcm_qla2xxx_complete_free(struct work_struct *work)
WARN_ON(cmd->cmd_flags & BIT_16);
+ cmd->vha->tgt_counters.qla_core_ret_sta_ctio++;
cmd->cmd_flags |= BIT_16;
transport_generic_free_cmd(&cmd->se_cmd, 0);
}
@@ -412,6 +413,7 @@ static void tcm_qla2xxx_complete_free(struct work_struct *work)
*/
static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
{
+ cmd->vha->tgt_counters.core_qla_free_cmd++;
cmd->cmd_in_wq = 1;
INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
queue_work(tcm_qla2xxx_free_wq, &cmd->work);
@@ -578,6 +580,7 @@ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
return -EINVAL;
}
+ cmd->vha->tgt_counters.qla_core_sbt_cmd++;
return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
cmd->unpacked_lun, data_length, fcp_task_attr,
data_dir, flags);
@@ -593,6 +596,7 @@ static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
*/
cmd->cmd_in_wq = 0;
cmd->cmd_flags |= BIT_11;
+ cmd->vha->tgt_counters.qla_core_ret_ctio++;
if (!cmd->write_data_transferred) {
/*
* Check if se_cmd has already been aborted via LUN_RESET, and
--
1.7.7
--
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