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[SCSI] qla2xxx: Consolidation of SRB processing.

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Rework the structures related to SRB processing to minimize the memory
allocations per I/O and manage resources associated with and completions
from common routines.

Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Giridhar Malavali
2012-02-09 11:15:36 -08:00
committed by James Bottomley
parent 69e5f1ea61
commit 9ba56b95a5
11 changed files with 481 additions and 624 deletions
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44
drivers/scsi/qla2xxx/qla_def.h
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@@ -202,20 +202,12 @@ struct sd_dif_tuple {
/*
* SCSI Request Block
*/
typedef struct srb {
atomic_t ref_count;
struct fc_port *fcport;
uint32_t handle;
struct srb_cmd {
struct scsi_cmnd *cmd; /* Linux SCSI command pkt */
uint16_t flags;
uint32_t request_sense_length;
uint8_t *request_sense_ptr;
void *ctx;
} srb_t;
};
/*
* SRB flag definitions
@@ -254,10 +246,7 @@ struct srb_iocb {
} u;
struct timer_list timer;
void (*done)(srb_t *);
void (*free)(srb_t *);
void (*timeout)(srb_t *);
void (*timeout)(void *);
};
/* Values for srb_ctx type */
@@ -268,16 +257,37 @@ struct srb_iocb {
#define SRB_CT_CMD 5
#define SRB_ADISC_CMD 6
#define SRB_TM_CMD 7
#define SRB_SCSI_CMD 8
struct srb_ctx {
typedef struct srb {
atomic_t ref_count;
struct fc_port *fcport;
uint32_t handle;
uint16_t flags;
uint16_t type;
char *name;
int iocbs;
union {
struct srb_iocb *iocb_cmd;
struct srb_iocb iocb_cmd;
struct fc_bsg_job *bsg_job;
struct srb_cmd scmd;
} u;
};
void (*done)(void *, void *, int);
void (*free)(void *, void *);
} srb_t;
#define GET_CMD_SP(sp) (sp->u.scmd.cmd)
#define SET_CMD_SP(sp, cmd) (sp->u.scmd.cmd = cmd)
#define GET_CMD_CTX_SP(sp) (sp->u.scmd.ctx)
#define GET_CMD_SENSE_LEN(sp) \
(sp->u.scmd.request_sense_length)
#define SET_CMD_SENSE_LEN(sp, len) \
(sp->u.scmd.request_sense_length = len)
#define GET_CMD_SENSE_PTR(sp) \
(sp->u.scmd.request_sense_ptr)
#define SET_CMD_SENSE_PTR(sp, ptr) \
(sp->u.scmd.request_sense_ptr = ptr)
struct msg_echo_lb {
dma_addr_t send_dma;