#include <scsi/scsi_device.h>
#include <scsi/scsi_driver.h>
#include <scsi/scsi_eh.h>
+#include <scsi/scsi_common.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_ioctl.h>
+#include <scsi/scsi_dh.h>
#include <scsi/sg.h>
#include "scsi_priv.h"
evt_type = SDEV_EVT_MODE_PARAMETER_CHANGE_REPORTED;
sdev_printk(KERN_WARNING, sdev,
"Mode parameters changed");
+ } else if (sshdr->asc == 0x2a && sshdr->ascq == 0x06) {
+ evt_type = SDEV_EVT_ALUA_STATE_CHANGE_REPORTED;
+ sdev_printk(KERN_WARNING, sdev,
+ "Asymmetric access state changed");
} else if (sshdr->asc == 0x2a && sshdr->ascq == 0x09) {
evt_type = SDEV_EVT_CAPACITY_CHANGE_REPORTED;
sdev_printk(KERN_WARNING, sdev,
if (scsi_sense_is_deferred(&sshdr))
return NEEDS_RETRY;
- if (sdev->scsi_dh_data && sdev->scsi_dh_data->scsi_dh &&
- sdev->scsi_dh_data->scsi_dh->check_sense) {
+ if (sdev->handler && sdev->handler->check_sense) {
int rc;
- rc = sdev->scsi_dh_data->scsi_dh->check_sense(sdev, &sshdr);
+ rc = sdev->handler->check_sense(sdev, &sshdr);
if (rc != SCSI_RETURN_NOT_HANDLED)
return rc;
/* handler does not care. Drop down to default handling */
struct Scsi_Host *shost;
int rtn;
+ /*
+ * If SCSI_EH_ABORT_SCHEDULED has been set, it is timeout IO,
+ * should not get sense.
+ */
list_for_each_entry_safe(scmd, next, work_q, eh_entry) {
if ((scmd->eh_eflags & SCSI_EH_CANCEL_CMD) ||
+ (scmd->eh_eflags & SCSI_EH_ABORT_SCHEDULED) ||
SCSI_SENSE_VALID(scmd))
continue;
struct request *req;
/*
- * blk_get_request with GFP_KERNEL (__GFP_WAIT) sleeps until a
+ * blk_get_request with GFP_KERNEL (__GFP_RECLAIM) sleeps until a
* request becomes available
*/
req = blk_get_request(sdev->request_queue, READ, GFP_KERNEL);
* We never actually get interrupted because kthread_run
* disables signal delivery for the created thread.
*/
- while (!kthread_should_stop()) {
+ while (true) {
+ /*
+ * The sequence in kthread_stop() sets the stop flag first
+ * then wakes the process. To avoid missed wakeups, the task
+ * should always be in a non running state before the stop
+ * flag is checked
+ */
set_current_state(TASK_INTERRUPTIBLE);
+ if (kthread_should_stop())
+ break;
+
if ((shost->host_failed == 0 && shost->host_eh_scheduled == 0) ||
shost->host_failed != atomic_read(&shost->host_busy)) {
SCSI_LOG_ERROR_RECOVERY(1,
}
EXPORT_SYMBOL(scsi_ioctl_reset);
-/**
- * scsi_normalize_sense - normalize main elements from either fixed or
- * descriptor sense data format into a common format.
- *
- * @sense_buffer: byte array containing sense data returned by device
- * @sb_len: number of valid bytes in sense_buffer
- * @sshdr: pointer to instance of structure that common
- * elements are written to.
- *
- * Notes:
- * The "main elements" from sense data are: response_code, sense_key,
- * asc, ascq and additional_length (only for descriptor format).
- *
- * Typically this function can be called after a device has
- * responded to a SCSI command with the CHECK_CONDITION status.
- *
- * Return value:
- * true if valid sense data information found, else false;
- */
-bool scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
- struct scsi_sense_hdr *sshdr)
-{
- if (!sense_buffer || !sb_len)
- return false;
-
- memset(sshdr, 0, sizeof(struct scsi_sense_hdr));
-
- sshdr->response_code = (sense_buffer[0] & 0x7f);
-
- if (!scsi_sense_valid(sshdr))
- return false;
-
- if (sshdr->response_code >= 0x72) {
- /*
- * descriptor format
- */
- if (sb_len > 1)
- sshdr->sense_key = (sense_buffer[1] & 0xf);
- if (sb_len > 2)
- sshdr->asc = sense_buffer[2];
- if (sb_len > 3)
- sshdr->ascq = sense_buffer[3];
- if (sb_len > 7)
- sshdr->additional_length = sense_buffer[7];
- } else {
- /*
- * fixed format
- */
- if (sb_len > 2)
- sshdr->sense_key = (sense_buffer[2] & 0xf);
- if (sb_len > 7) {
- sb_len = (sb_len < (sense_buffer[7] + 8)) ?
- sb_len : (sense_buffer[7] + 8);
- if (sb_len > 12)
- sshdr->asc = sense_buffer[12];
- if (sb_len > 13)
- sshdr->ascq = sense_buffer[13];
- }
- }
-
- return true;
-}
-EXPORT_SYMBOL(scsi_normalize_sense);
-
bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
struct scsi_sense_hdr *sshdr)
{
}
EXPORT_SYMBOL(scsi_command_normalize_sense);
-/**
- * scsi_sense_desc_find - search for a given descriptor type in descriptor sense data format.
- * @sense_buffer: byte array of descriptor format sense data
- * @sb_len: number of valid bytes in sense_buffer
- * @desc_type: value of descriptor type to find
- * (e.g. 0 -> information)
- *
- * Notes:
- * only valid when sense data is in descriptor format
- *
- * Return value:
- * pointer to start of (first) descriptor if found else NULL
- */
-const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
- int desc_type)
-{
- int add_sen_len, add_len, desc_len, k;
- const u8 * descp;
-
- if ((sb_len < 8) || (0 == (add_sen_len = sense_buffer[7])))
- return NULL;
- if ((sense_buffer[0] < 0x72) || (sense_buffer[0] > 0x73))
- return NULL;
- add_sen_len = (add_sen_len < (sb_len - 8)) ?
- add_sen_len : (sb_len - 8);
- descp = &sense_buffer[8];
- for (desc_len = 0, k = 0; k < add_sen_len; k += desc_len) {
- descp += desc_len;
- add_len = (k < (add_sen_len - 1)) ? descp[1]: -1;
- desc_len = add_len + 2;
- if (descp[0] == desc_type)
- return descp;
- if (add_len < 0) // short descriptor ??
- break;
- }
- return NULL;
-}
-EXPORT_SYMBOL(scsi_sense_desc_find);
-
/**
* scsi_get_sense_info_fld - get information field from sense data (either fixed or descriptor format)
* @sense_buffer: byte array of sense data
}
}
EXPORT_SYMBOL(scsi_get_sense_info_fld);
-
-/**
- * scsi_build_sense_buffer - build sense data in a buffer
- * @desc: Sense format (non zero == descriptor format,
- * 0 == fixed format)
- * @buf: Where to build sense data
- * @key: Sense key
- * @asc: Additional sense code
- * @ascq: Additional sense code qualifier
- *
- **/
-void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq)
-{
- if (desc) {
- buf[0] = 0x72; /* descriptor, current */
- buf[1] = key;
- buf[2] = asc;
- buf[3] = ascq;
- buf[7] = 0;
- } else {
- buf[0] = 0x70; /* fixed, current */
- buf[2] = key;
- buf[7] = 0xa;
- buf[12] = asc;
- buf[13] = ascq;
- }
-}
-EXPORT_SYMBOL(scsi_build_sense_buffer);
Code Review / kvmfornfv.git / blobdiff