[SCSI] qla2xxx: Consolidation of SRB processing.
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>
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h
index 7cc4f36..3ea0ced 100644
--- a/drivers/scsi/qla2xxx/qla_inline.h
+++ b/drivers/scsi/qla2xxx/qla_inline.h
@@ -72,16 +72,19 @@
qla2x00_clean_dsd_pool(struct qla_hw_data *ha, srb_t *sp)
{
struct dsd_dma *dsd_ptr, *tdsd_ptr;
+ struct crc_context *ctx;
+
+ ctx = (struct crc_context *)GET_CMD_CTX_SP(sp);
/* clean up allocated prev pool */
list_for_each_entry_safe(dsd_ptr, tdsd_ptr,
- &((struct crc_context *)sp->ctx)->dsd_list, list) {
+ &ctx->dsd_list, list) {
dma_pool_free(ha->dl_dma_pool, dsd_ptr->dsd_addr,
dsd_ptr->dsd_list_dma);
list_del(&dsd_ptr->list);
kfree(dsd_ptr);
}
- INIT_LIST_HEAD(&((struct crc_context *)sp->ctx)->dsd_list);
+ INIT_LIST_HEAD(&ctx->dsd_list);
}
static inline void
@@ -113,8 +116,7 @@
return 0;
*
*/
-
- switch (scsi_get_prot_op(sp->cmd)) {
+ switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
case SCSI_PROT_READ_STRIP:
case SCSI_PROT_WRITE_INSERT:
if (ql2xenablehba_err_chk >= 1)
@@ -144,3 +146,38 @@
test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
}
+
+static inline srb_t *
+qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
+{
+ srb_t *sp = NULL;
+ struct qla_hw_data *ha = vha->hw;
+ uint8_t bail;
+
+ QLA_VHA_MARK_BUSY(vha, bail);
+ if (unlikely(bail))
+ return NULL;
+
+ sp = mempool_alloc(ha->srb_mempool, flag);
+ if (!sp)
+ goto done;
+
+ memset(sp, 0, sizeof(*sp));
+ sp->fcport = fcport;
+ sp->iocbs = 1;
+done:
+ if (!sp)
+ QLA_VHA_MARK_NOT_BUSY(vha);
+ return sp;
+}
+
+static inline void
+qla2x00_init_timer(srb_t *sp, unsigned long tmo)
+{
+ init_timer(&sp->u.iocb_cmd.timer);
+ sp->u.iocb_cmd.timer.expires = jiffies + tmo * HZ;
+ sp->u.iocb_cmd.timer.data = (unsigned long)sp;
+ sp->u.iocb_cmd.timer.function = qla2x00_sp_timeout;
+ add_timer(&sp->u.iocb_cmd.timer);
+ sp->free = qla2x00_sp_free;
+}