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[SCSI] qla4xxx: Added ping support

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Added ping support for network connection diagnostics.

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Vikas Chaudhary 2012-02-13 18:30:49 +05:30 committed by James Bottomley
parent ac20c7bf07
commit c0b9d3f750
7 changed files with 328 additions and 0 deletions
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21
drivers/scsi/qla4xxx/ql4_def.h
View file

@ -221,6 +221,15 @@ struct srb {
uint16_t reserved2;
};
/* Mailbox request block structure */
struct mrb {
struct scsi_qla_host *ha;
struct mbox_cmd_iocb *mbox;
uint32_t mbox_cmd;
uint16_t iocb_cnt; /* Number of used iocbs */
uint32_t pid;
};
/*
* Asynchronous Event Queue structure
*/
@ -303,6 +312,7 @@ struct ql4_tuple_ddb {
enum qla4_work_type {
QLA4_EVENT_AEN,
QLA4_EVENT_PING_STATUS,
};
struct qla4_work_evt {
@ -314,6 +324,12 @@ struct qla4_work_evt {
uint32_t data_size;
uint8_t data[0];
} aen;
struct {
uint32_t status;
uint32_t pid;
uint32_t data_size;
uint8_t data[0];
} ping;
} u;
};
@ -690,6 +706,11 @@ struct scsi_qla_host {
/* event work list */
struct list_head work_list;
spinlock_t work_lock;
/* mbox iocb */
#define MAX_MRB 128
struct mrb *active_mrb_array[MAX_MRB];
uint32_t mrb_index;
};
struct ql4_task_data {

20
drivers/scsi/qla4xxx/ql4_fw.h
View file

@ -331,6 +331,10 @@ struct qla_flt_region {
/* Mailbox command definitions */
#define MBOX_CMD_ABOUT_FW 0x0009
#define MBOX_CMD_PING 0x000B
#define PING_IPV6_PROTOCOL_ENABLE 0x1
#define PING_IPV6_LINKLOCAL_ADDR 0x4
#define PING_IPV6_ADDR0 0x8
#define PING_IPV6_ADDR1 0xC
#define MBOX_CMD_ENABLE_INTRS 0x0010
#define INTR_DISABLE 0
#define INTR_ENABLE 1
@ -922,6 +926,8 @@ struct qla4_header {
#define ET_CMND_T3 0x19
#define ET_PASSTHRU0 0x3A
#define ET_PASSTHRU_STATUS 0x3C
#define ET_MBOX_CMD 0x38
#define ET_MBOX_STATUS 0x39
uint8_t entryStatus;
uint8_t systemDefined;
@ -1122,6 +1128,20 @@ struct passthru_status {
uint8_t res4[16]; /* 30-3F */
};
struct mbox_cmd_iocb {
struct qla4_header hdr; /* 00-03 */
uint32_t handle; /* 04-07 */
uint32_t in_mbox[8]; /* 08-25 */
uint32_t res1[6]; /* 26-3F */
};
struct mbox_status_iocb {
struct qla4_header hdr; /* 00-03 */
uint32_t handle; /* 04-07 */
uint32_t out_mbox[8]; /* 08-25 */
uint32_t res1[6]; /* 26-3F */
};
/*
* ISP queue - response queue entry definition.
*/

5
drivers/scsi/qla4xxx/ql4_glbl.h
View file

@ -183,6 +183,11 @@ int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
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);
int qla4xxx_ping_iocb(struct scsi_qla_host *ha, uint32_t options,
uint32_t payload_size, uint32_t pid, uint8_t *ipaddr);
int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
uint32_t status, uint32_t pid,
uint32_t data_size, uint8_t *data);
/* BSG Functions */
int qla4xxx_bsg_request(struct bsg_job *bsg_job);

5
drivers/scsi/qla4xxx/ql4_init.c
View file

@ -86,6 +86,7 @@ static void qla4xxx_init_response_q_entries(struct scsi_qla_host *ha)
int qla4xxx_init_rings(struct scsi_qla_host *ha)
{
unsigned long flags = 0;
int i;
/* Initialize request queue. */
spin_lock_irqsave(&ha->hardware_lock, flags);
@ -125,6 +126,10 @@ int qla4xxx_init_rings(struct scsi_qla_host *ha)
qla4xxx_init_response_q_entries(ha);
/* Initialize mabilbox active array */
for (i = 0; i < MAX_MRB; i++)
ha->active_mrb_array[i] = NULL;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return QLA_SUCCESS;

92
drivers/scsi/qla4xxx/ql4_iocb.c
View file

@ -445,3 +445,95 @@ int qla4xxx_send_passthru0(struct iscsi_task *task)
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return ret;
}
static struct mrb *qla4xxx_get_new_mrb(struct scsi_qla_host *ha)
{
struct mrb *mrb;
mrb = kzalloc(sizeof(*mrb), GFP_KERNEL);
if (!mrb)
return mrb;
mrb->ha = ha;
return mrb;
}
int qla4xxx_send_mbox_iocb(struct scsi_qla_host *ha, struct mrb *mrb,
uint32_t *in_mbox)
{
int rval = QLA_SUCCESS;
uint32_t i;
unsigned long flags;
uint32_t index = 0;
/* Acquire hardware specific lock */
spin_lock_irqsave(&ha->hardware_lock, flags);
/* Get pointer to the queue entry for the marker */
rval = qla4xxx_get_req_pkt(ha, (struct queue_entry **) &(mrb->mbox));
if (rval != QLA_SUCCESS)
goto exit_mbox_iocb;
index = ha->mrb_index;
/* get valid mrb index*/
for (i = 0; i < MAX_MRB; i++) {
index++;
if (index == MAX_MRB)
index = 1;
if (ha->active_mrb_array[index] == NULL) {
ha->mrb_index = index;
break;
}
}
mrb->iocb_cnt = 1;
ha->active_mrb_array[index] = mrb;
mrb->mbox->handle = index;
mrb->mbox->hdr.entryType = ET_MBOX_CMD;
mrb->mbox->hdr.entryCount = mrb->iocb_cnt;
memcpy(mrb->mbox->in_mbox, in_mbox, 32);
mrb->mbox_cmd = in_mbox[0];
wmb();
ha->isp_ops->queue_iocb(ha);
exit_mbox_iocb:
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return rval;
}
int qla4xxx_ping_iocb(struct scsi_qla_host *ha, uint32_t options,
uint32_t payload_size, uint32_t pid, uint8_t *ipaddr)
{
uint32_t in_mbox[8];
struct mrb *mrb = NULL;
int rval = QLA_SUCCESS;
memset(in_mbox, 0, sizeof(in_mbox));
mrb = qla4xxx_get_new_mrb(ha);
if (!mrb) {
DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: fail to get new mrb\n",
__func__));
rval = QLA_ERROR;
goto exit_ping;
}
in_mbox[0] = MBOX_CMD_PING;
in_mbox[1] = options;
memcpy(&in_mbox[2], &ipaddr[0], 4);
memcpy(&in_mbox[3], &ipaddr[4], 4);
memcpy(&in_mbox[4], &ipaddr[8], 4);
memcpy(&in_mbox[5], &ipaddr[12], 4);
in_mbox[6] = payload_size;
mrb->pid = pid;
rval = qla4xxx_send_mbox_iocb(ha, mrb, in_mbox);
if (rval != QLA_SUCCESS)
goto exit_ping;
return rval;
exit_ping:
kfree(mrb);
return rval;
}

72
drivers/scsi/qla4xxx/ql4_isr.c
View file

@ -385,6 +385,71 @@ static void qla4xxx_passthru_status_entry(struct scsi_qla_host *ha,
queue_work(ha->task_wq, &task_data->task_work);
}
static struct mrb *qla4xxx_del_mrb_from_active_array(struct scsi_qla_host *ha,
uint32_t index)
{
struct mrb *mrb = NULL;
/* validate handle and remove from active array */
if (index >= MAX_MRB)
return mrb;
mrb = ha->active_mrb_array[index];
ha->active_mrb_array[index] = NULL;
if (!mrb)
return mrb;
/* update counters */
ha->req_q_count += mrb->iocb_cnt;
ha->iocb_cnt -= mrb->iocb_cnt;
return mrb;
}
static void qla4xxx_mbox_status_entry(struct scsi_qla_host *ha,
struct mbox_status_iocb *mbox_sts_entry)
{
struct mrb *mrb;
uint32_t status;
uint32_t data_size;
mrb = qla4xxx_del_mrb_from_active_array(ha,
le32_to_cpu(mbox_sts_entry->handle));
if (mrb == NULL) {
ql4_printk(KERN_WARNING, ha, "%s: mrb[%d] is null\n", __func__,
mbox_sts_entry->handle);
return;
}
switch (mrb->mbox_cmd) {
case MBOX_CMD_PING:
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: mbox_cmd = 0x%x, "
"mbox_sts[0] = 0x%x, mbox_sts[6] = 0x%x\n",
__func__, mrb->mbox_cmd,
mbox_sts_entry->out_mbox[0],
mbox_sts_entry->out_mbox[6]));
if (mbox_sts_entry->out_mbox[0] == MBOX_STS_COMMAND_COMPLETE)
status = QLA_SUCCESS;
else
status = QLA_ERROR;
data_size = sizeof(mbox_sts_entry->out_mbox);
qla4xxx_post_ping_evt_work(ha, status, mrb->pid, data_size,
(uint8_t *) mbox_sts_entry->out_mbox);
break;
default:
DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: invalid mbox_cmd = "
"0x%x\n", __func__, mrb->mbox_cmd));
}
kfree(mrb);
return;
}
/**
* qla4xxx_process_response_queue - process response queue completions
* @ha: Pointer to host adapter structure.
@ -461,6 +526,13 @@ void qla4xxx_process_response_queue(struct scsi_qla_host *ha)
"ignoring\n", ha->host_no, __func__));
break;
case ET_MBOX_STATUS:
DEBUG2(ql4_printk(KERN_INFO, ha,
"%s: mbox status IOCB\n", __func__));
qla4xxx_mbox_status_entry(ha,
(struct mbox_status_iocb *)sts_entry);
break;
default:
/*
* Invalid entry in response queue, reset RISC

113
drivers/scsi/qla4xxx/ql4_os.c
View file

@ -118,6 +118,10 @@ static void qla4xxx_task_cleanup(struct iscsi_task *);
static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
struct iscsi_stats *stats);
static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
uint32_t iface_type, uint32_t payload_size,
uint32_t pid, struct sockaddr *dst_addr);
/*
* SCSI host template entry points
*/
@ -194,10 +198,91 @@ static struct iscsi_transport qla4xxx_iscsi_transport = {
.set_iface_param = qla4xxx_iface_set_param,
.get_iface_param = qla4xxx_get_iface_param,
.bsg_request = qla4xxx_bsg_request,
.send_ping = qla4xxx_send_ping,
};
static struct scsi_transport_template *qla4xxx_scsi_transport;
static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
uint32_t iface_type, uint32_t payload_size,
uint32_t pid, struct sockaddr *dst_addr)
{
struct scsi_qla_host *ha = to_qla_host(shost);
struct sockaddr_in *addr;
struct sockaddr_in6 *addr6;
uint32_t options = 0;
uint8_t ipaddr[IPv6_ADDR_LEN];
int rval;
memset(ipaddr, 0, IPv6_ADDR_LEN);
/* IPv4 to IPv4 */
if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
(dst_addr->sa_family == AF_INET)) {
addr = (struct sockaddr_in *)dst_addr;
memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
"dest: %pI4\n", __func__,
&ha->ip_config.ip_address, ipaddr));
rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
ipaddr);
if (rval)
rval = -EINVAL;
} else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
(dst_addr->sa_family == AF_INET6)) {
/* IPv6 to IPv6 */
addr6 = (struct sockaddr_in6 *)dst_addr;
memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
options |= PING_IPV6_PROTOCOL_ENABLE;
/* Ping using LinkLocal address */
if ((iface_num == 0) || (iface_num == 1)) {
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
"src: %pI6 dest: %pI6\n", __func__,
&ha->ip_config.ipv6_link_local_addr,
ipaddr));
options |= PING_IPV6_LINKLOCAL_ADDR;
rval = qla4xxx_ping_iocb(ha, options, payload_size,
pid, ipaddr);
} else {
ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
"not supported\n", __func__, iface_num);
rval = -ENOSYS;
goto exit_send_ping;
}
/*
* If ping using LinkLocal address fails, try ping using
* IPv6 address
*/
if (rval != QLA_SUCCESS) {
options &= ~PING_IPV6_LINKLOCAL_ADDR;
if (iface_num == 0) {
options |= PING_IPV6_ADDR0;
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
"Ping src: %pI6 "
"dest: %pI6\n", __func__,
&ha->ip_config.ipv6_addr0,
ipaddr));
} else if (iface_num == 1) {
options |= PING_IPV6_ADDR1;
DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
"Ping src: %pI6 "
"dest: %pI6\n", __func__,
&ha->ip_config.ipv6_addr1,
ipaddr));
}
rval = qla4xxx_ping_iocb(ha, options, payload_size,
pid, ipaddr);
if (rval)
rval = -EINVAL;
}
} else
rval = -ENOSYS;
exit_send_ping:
return rval;
}
static umode_t ql4_attr_is_visible(int param_type, int param)
{
switch (param_type) {
@ -2897,6 +2982,26 @@ int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
return QLA_SUCCESS;
}
int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
uint32_t status, uint32_t pid,
uint32_t data_size, uint8_t *data)
{
struct qla4_work_evt *e;
e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
if (!e)
return QLA_ERROR;
e->u.ping.status = status;
e->u.ping.pid = pid;
e->u.ping.data_size = data_size;
memcpy(e->u.ping.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;
@ -2918,6 +3023,14 @@ void qla4xxx_do_work(struct scsi_qla_host *ha)
e->u.aen.data_size,
e->u.aen.data);
break;
case QLA4_EVENT_PING_STATUS:
iscsi_ping_comp_event(ha->host_no,
&qla4xxx_iscsi_transport,
e->u.ping.status,
e->u.ping.pid,
e->u.ping.data_size,
e->u.ping.data);
break;
default:
ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
"supported", e->type);