diff options
| author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2011-11-18 09:03:20 -0800 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-12-15 10:55:11 +0400 |
| commit | 5780790ee6836ad64648c0905fcf15e073aad19b (patch) | |
| tree | 4ad962c4006eaf84a264f485d0c1d6c6b7837551 /drivers/scsi/qla2xxx/qla_bsg.c | |
| parent | a00f6296aaf92ebe89c72eb98c440410992a33c4 (diff) | |
[SCSI] qla2xxx: Ensure there's enough request-queue space for passthru IOCBs.
The driver should ensure there's a sufficient number of IOCBs
to satisfy the number of scatter-gather entries specified in the
command. Add a 'count' to the control structure, srb_ctx, to use
in qla2x00_alloc_iocbs().
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_bsg.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_bsg.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c index c0bc0c6f084d..b1d0f936bf2d 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.c +++ b/drivers/scsi/qla2xxx/qla_bsg.c @@ -31,6 +31,7 @@ qla2x00_get_ctx_bsg_sp(scsi_qla_host_t *vha, fc_port_t *fcport, size_t size) memset(sp, 0, sizeof(*sp)); sp->fcport = fcport; sp->ctx = ctx; + ctx->iocbs = 1; done: return sp; } @@ -389,6 +390,20 @@ done: return rval; } +inline uint16_t +qla24xx_calc_ct_iocbs(uint16_t dsds) +{ + uint16_t iocbs; + + iocbs = 1; + if (dsds > 2) { + iocbs += (dsds - 2) / 5; + if ((dsds - 2) % 5) + iocbs++; + } + return iocbs; +} + static int qla2x00_process_ct(struct fc_bsg_job *bsg_job) { @@ -489,6 +504,7 @@ qla2x00_process_ct(struct fc_bsg_job *bsg_job) ct = sp->ctx; ct->type = SRB_CT_CMD; ct->name = "bsg_ct"; + ct->iocbs = qla24xx_calc_ct_iocbs(req_sg_cnt + rsp_sg_cnt); ct->u.bsg_job = bsg_job; ql_dbg(ql_dbg_user, vha, 0x7016, |