diff options
| author | Krishna Gudipati <kgudipat@brocade.com> | 2010-12-13 16:23:27 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-12-21 12:37:17 -0600 |
| commit | 15821f05b78dbeb2f897d1d22576449103a4d8d5 (patch) | |
| tree | d71a92b42ceba66e2cd33d5494b05f378cae0476 /drivers/scsi/bfa/bfa_fcpim.c | |
| parent | b704495c6707013806d1b66507a967896e2b4a7c (diff) | |
[SCSI] bfa: io tag handling and minor bug fix.
Fix iotag handling:
1) Update and check io tag for retry case.
2) Clearing upper 3 bits in io tag when an IO completes.
The 3 upper bits in io tags are used for counting FCP exchange retry.
Un-cleared bits will cause firmware to access invalid memory when the
same io tag is used for an IO to a target that doesn't support FCP
exchange retry.
3) Only check the effective bits when validating an iotag.
Other minor fixes:
1) Added trace to get FC header type with assert of unhandled packet received.
Ignore the type FC_TYPE_FC_FSS (FC_XS).
2) Fixed the adapter info display check - to check for fcmode flag even.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/bfa/bfa_fcpim.c')
| -rw-r--r-- | drivers/scsi/bfa/bfa_fcpim.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/scsi/bfa/bfa_fcpim.c b/drivers/scsi/bfa/bfa_fcpim.c index 314c93122980..5e697f236ef3 100644 --- a/drivers/scsi/bfa/bfa_fcpim.c +++ b/drivers/scsi/bfa/bfa_fcpim.c @@ -1540,8 +1540,8 @@ bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) break; case BFA_IOIM_SM_SQRETRY: - if (bfa_ioim_get_iotag(ioim) != BFA_TRUE) { - /* max retry completed free IO */ + if (bfa_ioim_maxretry_reached(ioim)) { + /* max retry reached, free IO */ bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free); bfa_ioim_move_to_comp_q(ioim); bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, @@ -1569,6 +1569,7 @@ bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim, enum bfa_ioim_event event) switch (event) { case BFA_IOIM_SM_FREE: /* abts and rrq done. Now retry the IO with new tag */ + bfa_ioim_update_iotag(ioim); if (!bfa_ioim_send_ioreq(ioim)) { bfa_sm_set_state(ioim, bfa_ioim_sm_qfull); break; @@ -2526,7 +2527,7 @@ bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m) iotag = be16_to_cpu(rsp->io_tag); ioim = BFA_IOIM_FROM_TAG(fcpim, iotag); - bfa_assert(ioim->iotag == iotag); + bfa_assert(BFA_IOIM_TAG_2_ID(ioim->iotag) == iotag); bfa_trc_fp(ioim->bfa, ioim->iotag); bfa_ioim_cb_profile_comp(fcpim, ioim); @@ -2629,6 +2630,7 @@ bfa_ioim_free(struct bfa_ioim_s *ioim) bfa_stats(ioim->itnim, io_comps); fcpim->ios_active--; + ioim->iotag &= BFA_IOIM_IOTAG_MASK; list_del(&ioim->qe); list_add_tail(&ioim->qe, &fcpim->ioim_free_q); } |