James,
Looks like this email is not going to scsi-list from my Linux box, may be
some configuration issue at my end.
Sending this emil from Microsoft outlook please consider attachment for
this time.
Thanks,
Vikas.
-----Original Message-----
From: Admin <vikas.chaudhary@xxxxxxxxxx>
Date: Mon, 13 Feb 2012 05:00:47 -0800
To: "jbottomley@xxxxxxxxxxxxx" <jbottomley@xxxxxxxxxxxxx>, Mike Christie
<michaelc@xxxxxxxxxxx>
Cc: scsi <linux-scsi@xxxxxxxxxxxxxxx>, Ravi Anand <ravi.anand@xxxxxxxxxx>,
Lalit Chandivade <lalit.chandivade@xxxxxxxxxx>, Admin
<vikas.chaudhary@xxxxxxxxxx>
Subject: [PATCH 08/11] qla4xxx: added support for host event
>From: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
>
>Added support to post kernel host event to application using
>netlink interface.
>
>Signed-off-by: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
>---
> drivers/scsi/qla4xxx/ql4_def.h | 18 ++++++++
> drivers/scsi/qla4xxx/ql4_glbl.h | 2 +
> drivers/scsi/qla4xxx/ql4_isr.c | 6 +++
> drivers/scsi/qla4xxx/ql4_os.c | 85
>+++++++++++++++++++++++++++++++++++++++
> 4 files changed, 111 insertions(+), 0 deletions(-)
>
>diff --git a/drivers/scsi/qla4xxx/ql4_def.h
>b/drivers/scsi/qla4xxx/ql4_def.h
>index ec48dc3..f91808c 100644
>--- a/drivers/scsi/qla4xxx/ql4_def.h
>+++ b/drivers/scsi/qla4xxx/ql4_def.h
>@@ -301,7 +301,21 @@ struct ql4_tuple_ddb {
> #define DF_ISNS_DISCOVERED 2 /* Device was discovered via iSNS */
> #define DF_FO_MASKED 3
>
>+enum qla4_work_type {
>+ QLA4_EVENT_AEN,
>+};
>
>+struct qla4_work_evt {
>+ struct list_head list;
>+ enum qla4_work_type type;
>+ union {
>+ struct {
>+ enum iscsi_host_event_code code;
>+ uint32_t data_size;
>+ uint8_t data[0];
>+ } aen;
>+ } u;
>+};
>
> struct ql82xx_hw_data {
> /* Offsets for flash/nvram access (set to ~0 if not used). */
>@@ -672,6 +686,10 @@ struct scsi_qla_host {
> uint16_t sec_ddb_idx;
> int is_reset;
> uint16_t temperature;
>+
>+ /* event work list */
>+ struct list_head work_list;
>+ spinlock_t work_lock;
> };
>
> struct ql4_task_data {
>diff --git a/drivers/scsi/qla4xxx/ql4_glbl.h
>b/drivers/scsi/qla4xxx/ql4_glbl.h
>index d0dd4b3..34cf851 100644
>--- a/drivers/scsi/qla4xxx/ql4_glbl.h
>+++ b/drivers/scsi/qla4xxx/ql4_glbl.h
>@@ -181,6 +181,8 @@ int qla4xxx_flash_ddb_change(struct scsi_qla_host
>*ha, uint32_t fw_ddb_index,
> int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
> struct ddb_entry *ddb_entry, uint32_t state);
> void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset);
>+int qla4xxx_post_aen_work(struct scsi_qla_host *ha, uint32_t aen_code,
>+ uint32_t data_size, uint8_t *data);
>
> /* BSG Functions */
> int qla4xxx_bsg_request(struct bsg_job *bsg_job);
>diff --git a/drivers/scsi/qla4xxx/ql4_isr.c
>b/drivers/scsi/qla4xxx/ql4_isr.c
>index 9582886..954fe84 100644
>--- a/drivers/scsi/qla4xxx/ql4_isr.c
>+++ b/drivers/scsi/qla4xxx/ql4_isr.c
>@@ -576,6 +576,9 @@ static void qla4xxx_isr_decode_mailbox(struct
>scsi_qla_host * ha,
> set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
>
> ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__);
>+ qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKUP,
>+ sizeof(mbox_sts),
>+ (uint8_t *) mbox_sts);
> break;
>
> case MBOX_ASTS_LINK_DOWN:
>@@ -584,6 +587,9 @@ static void qla4xxx_isr_decode_mailbox(struct
>scsi_qla_host * ha,
> set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
>
> ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__);
>+ qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKDOWN,
>+ sizeof(mbox_sts),
>+ (uint8_t *) mbox_sts);
> break;
>
> case MBOX_ASTS_HEARTBEAT:
>diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
>index 2cd2077..d423f7a 100644
>--- a/drivers/scsi/qla4xxx/ql4_os.c
>+++ b/drivers/scsi/qla4xxx/ql4_os.c
>@@ -2282,6 +2282,10 @@ static void qla4xxx_timer(struct scsi_qla_host *ha)
> }
> }
>
>+ /* Process any deferred work. */
>+ if (!list_empty(&ha->work_list))
>+ start_dpc++;
>+
> /* Wakeup the dpc routine for this adapter, if needed. */
> if (start_dpc ||
> test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
>@@ -2847,6 +2851,81 @@ void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
> queue_work(ha->dpc_thread, &ha->dpc_work);
> }
>
>+static struct qla4_work_evt *
>+qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
>+ enum qla4_work_type type)
>+{
>+ struct qla4_work_evt *e;
>+ uint32_t size = sizeof(struct qla4_work_evt) + data_size;
>+
>+ e = kzalloc(size, GFP_ATOMIC);
>+ if (!e)
>+ return NULL;
>+
>+ INIT_LIST_HEAD(&e->list);
>+ e->type = type;
>+ return e;
>+}
>+
>+static void qla4xxx_post_work(struct scsi_qla_host *ha,
>+ struct qla4_work_evt *e)
>+{
>+ unsigned long flags;
>+
>+ spin_lock_irqsave(&ha->work_lock, flags);
>+ list_add_tail(&e->list, &ha->work_list);
>+ spin_unlock_irqrestore(&ha->work_lock, flags);
>+ qla4xxx_wake_dpc(ha);
>+}
>+
>+int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
>+ enum iscsi_host_event_code aen_code,
>+ uint32_t data_size, uint8_t *data)
>+{
>+ struct qla4_work_evt *e;
>+
>+ e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
>+ if (!e)
>+ return QLA_ERROR;
>+
>+ e->u.aen.code = aen_code;
>+ e->u.aen.data_size = data_size;
>+ memcpy(e->u.aen.data, data, data_size);
>+
>+ qla4xxx_post_work(ha, e);
>+
>+ return QLA_SUCCESS;
>+}
>+
>+void qla4xxx_do_work(struct scsi_qla_host *ha)
>+{
>+ struct qla4_work_evt *e, *tmp;
>+ unsigned long flags;
>+ LIST_HEAD(work);
>+
>+ spin_lock_irqsave(&ha->work_lock, flags);
>+ list_splice_init(&ha->work_list, &work);
>+ spin_unlock_irqrestore(&ha->work_lock, flags);
>+
>+ list_for_each_entry_safe(e, tmp, &work, list) {
>+ list_del_init(&e->list);
>+
>+ switch (e->type) {
>+ case QLA4_EVENT_AEN:
>+ iscsi_post_host_event(ha->host_no,
>+ &qla4xxx_iscsi_transport,
>+ e->u.aen.code,
>+ e->u.aen.data_size,
>+ e->u.aen.data);
>+ break;
>+ default:
>+ ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
>+ "supported", e->type);
>+ }
>+ kfree(e);
>+ }
>+}
>+
> /**
> * qla4xxx_do_dpc - dpc routine
> * @data: in our case pointer to adapter structure
>@@ -2878,6 +2957,9 @@ static void qla4xxx_do_dpc(struct work_struct *work)
> return;
> }
>
>+ /* post events to application */
>+ qla4xxx_do_work(ha);
>+
> if (is_qla8022(ha)) {
> if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
> qla4_8xxx_idc_lock(ha);
>@@ -4450,6 +4532,9 @@ static int __devinit qla4xxx_probe_adapter(struct
>pci_dev *pdev,
>
> spin_lock_init(&ha->hardware_lock);
>
>+ /* Initialize work list */
>+ INIT_LIST_HEAD(&ha->work_list);
>+
> /* Allocate dma buffers */
> if (qla4xxx_mem_alloc(ha)) {
> ql4_printk(KERN_WARNING, ha,
>--
>1.7.8.247.g10f4e
>
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0008-qla4xxx-added-support-for-host-event.patch
Description: 0008-qla4xxx-added-support-for-host-event.patch
