[PATCH v3 13/48] scsi: aacraid: Move the SCSI pointer to private command data

Bart Van Assche
2022-02-11T22:33:37Z

Set .cmd_size in the SCSI host template instead of using the SCSI pointer
from struct scsi_cmnd. This patch prepares for removal of the SCSI pointer
from struct scsi_cmnd.

Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
drivers/scsi/aacraid/aachba.c | 43 ++++++++++++++++++---------------
drivers/scsi/aacraid/aacraid.h | 24 ++++++++++++++----
drivers/scsi/aacraid/comminit.c | 2 +-
drivers/scsi/aacraid/linit.c | 21 ++++++++--------
4 files changed, 54 insertions(+), 36 deletions(-)

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index b04d039da276..81462f4ddb90 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -338,7 +338,7 @@ static inline int aac_valid_context(struct scsi_cmnd *scsicmd,
aac_fib_complete(fibptr);
return 0;
}
- scsicmd->SCp.phase = AAC_OWNER_MIDLEVEL;
+ aac_priv(scsicmd)->owner = AAC_OWNER_MIDLEVEL;
device = scsicmd->device;
if (unlikely(!device)) {
dprintk((KERN_WARNING "aac_valid_context: scsi device corrupt\n"));
@@ -592,7 +592,7 @@ static int aac_get_container_name(struct scsi_cmnd * scsicmd)

aac_fib_init(cmd_fibcontext);
dinfo = (struct aac_get_name *) fib_data(cmd_fibcontext);
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;

dinfo->command = cpu_to_le32(VM_ContainerConfig);
dinfo->type = cpu_to_le32(CT_READ_NAME);
@@ -634,14 +634,15 @@ static void _aac_probe_container2(void * context, struct fib * fibptr)
{
struct fsa_dev_info *fsa_dev_ptr;
int (*callback)(struct scsi_cmnd *);
- struct scsi_cmnd * scsicmd = (struct scsi_cmnd *)context;
+ struct scsi_cmnd *scsicmd = context;
+ struct aac_cmd_priv *cmd_priv = aac_priv(scsicmd);
int i;

if (!aac_valid_context(scsicmd, fibptr))
return;

- scsicmd->SCp.Status = 0;
+ cmd_priv->status = 0;
fsa_dev_ptr = fibptr->dev->fsa_dev;
if (fsa_dev_ptr) {
struct aac_mount * dresp = (struct aac_mount *) fib_data(fibptr);
@@ -679,12 +680,12 @@ static void _aac_probe_container2(void * context, struct fib * fibptr)
}
if ((fsa_dev_ptr->valid & 1) == 0)
fsa_dev_ptr->valid = 0;
- scsicmd->SCp.Status = le32_to_cpu(dresp->count);
+ cmd_priv->status = le32_to_cpu(dresp->count);
}
aac_fib_complete(fibptr);
aac_fib_free(fibptr);
- callback = (int (*)(struct scsi_cmnd *))(scsicmd->SCp.ptr);
- scsicmd->SCp.ptr = NULL;
+ callback = cmd_priv->callback;
+ cmd_priv->callback = NULL;
(*callback)(scsicmd);
return;
}
@@ -722,7 +723,7 @@ static void _aac_probe_container1(void * context, struct fib * fibptr)

dinfo->count = cpu_to_le32(scmd_id(scsicmd));
dinfo->type = cpu_to_le32(FT_FILESYS);
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;

status = aac_fib_send(ContainerCommand,
fibptr,
@@ -743,6 +744,7 @@ static void _aac_probe_container1(void * context, struct fib * fibptr)

static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(struct scsi_cmnd *))
{
+ struct aac_cmd_priv *cmd_priv = aac_priv(scsicmd);
struct fib * fibptr;
int status = -ENOMEM;

@@ -761,8 +763,8 @@ static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(stru

dinfo->count = cpu_to_le32(scmd_id(scsicmd));
dinfo->type = cpu_to_le32(FT_FILESYS);
- scsicmd->SCp.ptr = (char *)callback;
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ cmd_priv->callback = callback;
+ cmd_priv->owner = AAC_OWNER_FIRMWARE;

status = aac_fib_send(ContainerCommand,
fibptr,
@@ -778,7 +780,7 @@ static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(stru
return 0;

if (status < 0) {
- scsicmd->SCp.ptr = NULL;
+ cmd_priv->callback = NULL;
aac_fib_complete(fibptr);
aac_fib_free(fibptr);
}
@@ -817,6 +819,7 @@ static void aac_probe_container_scsi_done(struct scsi_cmnd *scsi_cmnd)
int aac_probe_container(struct aac_dev *dev, int cid)
{
struct scsi_cmnd *scsicmd = kzalloc(sizeof(*scsicmd), GFP_KERNEL);
+ struct aac_cmd_priv *cmd_priv = aac_priv(scsicmd);
struct scsi_device *scsidev = kzalloc(sizeof(*scsidev), GFP_KERNEL);
int status;

@@ -835,7 +838,7 @@ int aac_probe_container(struct aac_dev *dev, int cid)
while (scsicmd->device == scsidev)
schedule();
kfree(scsidev);
- status = scsicmd->SCp.Status;
+ status = cmd_priv->status;
kfree(scsicmd);
return status;
}
@@ -1128,7 +1131,7 @@ static int aac_get_container_serial(struct scsi_cmnd * scsicmd)
dinfo->command = cpu_to_le32(VM_ContainerConfig);
dinfo->type = cpu_to_le32(CT_CID_TO_32BITS_UID);
dinfo->cid = cpu_to_le32(scmd_id(scsicmd));
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;

status = aac_fib_send(ContainerCommand,
cmd_fibcontext,
@@ -2486,7 +2489,7 @@ static int aac_read(struct scsi_cmnd * scsicmd)
* Alocate and initialize a Fib
*/
cmd_fibcontext = aac_fib_alloc_tag(dev, scsicmd);
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;
status = aac_adapter_read(cmd_fibcontext, scsicmd, lba, count);

/*
@@ -2577,7 +2580,7 @@ static int aac_write(struct scsi_cmnd * scsicmd)
* Allocate and initialize a Fib then setup a BlockWrite command
*/
cmd_fibcontext = aac_fib_alloc_tag(dev, scsicmd);
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;
status = aac_adapter_write(cmd_fibcontext, scsicmd, lba, count, fua);

/*
@@ -2660,7 +2663,7 @@ static int aac_synchronize(struct scsi_cmnd *scsicmd)
synchronizecmd->cid = cpu_to_le32(scmd_id(scsicmd));
synchronizecmd->count =
cpu_to_le32(sizeof(((struct aac_synchronize_reply *)NULL)->data));
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;

/*
* Now send the Fib to the adapter
@@ -2736,7 +2739,7 @@ static int aac_start_stop(struct scsi_cmnd *scsicmd)
pmcmd->cid = cpu_to_le32(sdev_id(sdev));
pmcmd->parm = (scsicmd->cmnd[1] & 1) ?
cpu_to_le32(CT_PM_UNIT_IMMEDIATE) : 0;
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;

/*
* Now send the Fib to the adapter
@@ -3695,7 +3698,7 @@ void aac_hba_callback(void *context, struct fib *fibptr)
aac_fib_complete(fibptr);

if (fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA_TMF)
- scsicmd->SCp.sent_command = 1;
+ aac_priv(scsicmd)->sent_command = 1;
else
aac_scsi_done(scsicmd);
}
@@ -3725,7 +3728,7 @@ static int aac_send_srb_fib(struct scsi_cmnd* scsicmd)
* Allocate and initialize a Fib then setup a BlockWrite command
*/
cmd_fibcontext = aac_fib_alloc_tag(dev, scsicmd);
- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;
status = aac_adapter_scsi(cmd_fibcontext, scsicmd);

/*
@@ -3769,7 +3772,7 @@ static int aac_send_hba_fib(struct scsi_cmnd *scsicmd)
if (!cmd_fibcontext)
return -1;

- scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
+ aac_priv(scsicmd)->owner = AAC_OWNER_FIRMWARE;
status = aac_adapter_hba(cmd_fibcontext, scsicmd);

/*
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 3733df77bc65..f849e7c9d428 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -29,6 +29,7 @@
#include <linux/completion.h>
#include <linux/pci.h>
#include <scsi/scsi_host.h>
+#include <scsi/scsi_cmnd.h>

/*------------------------------------------------------------------------------
* D E F I N E S
@@ -2673,11 +2674,24 @@ static inline void aac_cancel_rescan_worker(struct aac_dev *dev)
cancel_delayed_work_sync(&dev->src_reinit_aif_worker);
}

-/* SCp.phase values */
-#define AAC_OWNER_MIDLEVEL 0x101
-#define AAC_OWNER_LOWLEVEL 0x102
-#define AAC_OWNER_ERROR_HANDLER 0x103
-#define AAC_OWNER_FIRMWARE 0x106
+enum aac_cmd_owner {
+ AAC_OWNER_MIDLEVEL = 0x101,
+ AAC_OWNER_LOWLEVEL = 0x102,
+ AAC_OWNER_ERROR_HANDLER = 0x103,
+ AAC_OWNER_FIRMWARE = 0x106,
+};
+
+struct aac_cmd_priv {
+ int (*callback)(struct scsi_cmnd *);
+ int status;
+ enum aac_cmd_owner owner;
+ bool sent_command;
+};
+
+static inline struct aac_cmd_priv *aac_priv(struct scsi_cmnd *cmd)
+{
+ return scsi_cmd_priv(cmd);
+}

void aac_safw_rescan_worker(struct work_struct *work);
void aac_src_reinit_aif_worker(struct work_struct *work);
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 355b16f0b145..940a6deab38f 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -276,7 +276,7 @@ static bool wait_for_io_iter(struct scsi_cmnd *cmd, void *data, bool rsvd)
{
int *active = data;

- if (cmd->SCp.phase == AAC_OWNER_FIRMWARE)
+ if (aac_priv(cmd)->owner == AAC_OWNER_FIRMWARE)
*active = *active + 1;
return true;
}
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index a911252075a6..b91b72b923ec 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -241,10 +241,9 @@ static struct aac_driver_ident aac_drivers[] = {
static int aac_queuecommand(struct Scsi_Host *shost,
struct scsi_cmnd *cmd)
{
- int r = 0;
- cmd->SCp.phase = AAC_OWNER_LOWLEVEL;
- r = (aac_scsi_cmd(cmd) ? FAILED : 0);
- return r;
+ aac_priv(cmd)->owner = AAC_OWNER_LOWLEVEL;
+
+ return aac_scsi_cmd(cmd) ? FAILED : 0;
}

/**
@@ -638,7 +637,7 @@ static bool fib_count_iter(struct scsi_cmnd *scmnd, void *data, bool reserved)
{
struct fib_count_data *fib_count = data;

- switch (scmnd->SCp.phase) {
+ switch (aac_priv(scmnd)->owner) {
case AAC_OWNER_FIRMWARE:
fib_count->fwcnt++;
break;
@@ -680,6 +679,7 @@ static int get_num_of_incomplete_fibs(struct aac_dev *aac)

static int aac_eh_abort(struct scsi_cmnd* cmd)
{
+ struct aac_cmd_priv *cmd_priv = aac_priv(cmd);
struct scsi_device * dev = cmd->device;
struct Scsi_Host * host = dev->host;
struct aac_dev * aac = (struct aac_dev *)host->hostdata;
@@ -732,7 +732,7 @@ static int aac_eh_abort(struct scsi_cmnd* cmd)
tmf->error_length = cpu_to_le32(FW_ERROR_BUFFER_SIZE);

fib->hbacmd_size = sizeof(*tmf);
- cmd->SCp.sent_command = 0;
+ cmd_priv->sent_command = 0;

status = aac_hba_send(HBA_IU_TYPE_SCSI_TM_REQ, fib,
(fib_callback) aac_hba_callback,
@@ -744,7 +744,7 @@ static int aac_eh_abort(struct scsi_cmnd* cmd)
}
/* Wait up to 15 secs for completion */
for (count = 0; count < 15; ++count) {
- if (cmd->SCp.sent_command) {
+ if (cmd_priv->sent_command) {
ret = SUCCESS;
break;
}
@@ -784,7 +784,7 @@ static int aac_eh_abort(struct scsi_cmnd* cmd)
(fib->callback_data == cmd)) {
fib->flags |=
FIB_CONTEXT_FLAG_TIMED_OUT;
- cmd->SCp.phase =
+ cmd_priv->owner =
AAC_OWNER_ERROR_HANDLER;
ret = SUCCESS;
}
@@ -811,7 +811,7 @@ static int aac_eh_abort(struct scsi_cmnd* cmd)
(command->device == cmd->device)) {
fib->flags |=
FIB_CONTEXT_FLAG_TIMED_OUT;
- command->SCp.phase =
+ aac_priv(command)->owner =
AAC_OWNER_ERROR_HANDLER;
if (command == cmd)
ret = SUCCESS;
@@ -1058,7 +1058,7 @@ static int aac_eh_bus_reset(struct scsi_cmnd* cmd)
if (bus >= AAC_MAX_BUSES || cid >= AAC_MAX_TARGETS ||
info->devtype != AAC_DEVTYPE_NATIVE_RAW) {
fib->flags |= FIB_CONTEXT_FLAG_EH_RESET;
- cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER;
+ aac_priv(cmd)->owner = AAC_OWNER_ERROR_HANDLER;
}
}
}
@@ -1507,6 +1507,7 @@ static struct scsi_host_template aac_driver_template = {
#endif
.emulated = 1,
.no_write_same = 1,
+ .cmd_size = sizeof(struct aac_cmd_priv),
};

static void __aac_shutdown(struct aac_dev * aac)