| Message ID | 20210914105539.6942-3-d.bogdanov@yadro.com |
|---|---|
| State | New |
| Headers | show |
| Series | efct fixes & improvements | expand |
On Tue, Sep 14, 2021 at 4:25 PM Dmitry Bogdanov <d.bogdanov@yadro.com> wrote: > > nport_free for an empty nport hangs the state machine waiting for mbox > completion if nport is not yet attached thinking that it is attaching > right now. > Add a check for nport attaching state and complete nport free. > > Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com> > --- > drivers/scsi/elx/libefc/efc_cmds.c | 7 ++++++- > drivers/scsi/elx/libefc/efclib.h | 1 + > 2 files changed, 7 insertions(+), 1 deletion(-) > > diff --git a/drivers/scsi/elx/libefc/efc_cmds.c b/drivers/scsi/elx/libefc/efc_cmds.c > index 37e6697d86b8..f8665d48904a 100644 > --- a/drivers/scsi/elx/libefc/efc_cmds.c > +++ b/drivers/scsi/elx/libefc/efc_cmds.c > @@ -249,6 +249,7 @@ efc_nport_attach_reg_vpi_cb(struct efc *efc, int status, u8 *mqe, > { > struct efc_nport *nport = arg; > > + nport->attaching = false; > if (efc_nport_get_mbox_status(nport, mqe, status)) { > efc_nport_free_resources(nport, EFC_EVT_NPORT_ATTACH_FAIL, mqe); > return -EIO; > @@ -286,6 +287,8 @@ efc_cmd_nport_attach(struct efc *efc, struct efc_nport *nport, u32 fc_id) > if (rc) { > efc_log_err(efc, "REG_VPI command failure\n"); > efc_nport_free_resources(nport, EFC_EVT_NPORT_ATTACH_FAIL, buf); > + } else { > + nport->attaching = true; > } > > return rc; > @@ -302,8 +305,10 @@ efc_cmd_nport_free(struct efc *efc, struct efc_nport *nport) > /* Issue the UNREG_VPI command to free the assigned VPI context */ > if (nport->attached) > efc_nport_free_unreg_vpi(nport); > - else > + else if (nport->attaching) > nport->free_req_pending = true; > + else > + efc_sm_post_event(&nport->sm, EFC_EVT_NPORT_FREE_OK, NULL); > > return 0; > } > diff --git a/drivers/scsi/elx/libefc/efclib.h b/drivers/scsi/elx/libefc/efclib.h > index ee291cabf7e0..dde20891c2dd 100644 > --- a/drivers/scsi/elx/libefc/efclib.h > +++ b/drivers/scsi/elx/libefc/efclib.h > @@ -142,6 +142,7 @@ struct efc_nport { > bool is_vport; > bool free_req_pending; > bool attached; > + bool attaching; > bool p2p_winner; > struct efc_domain *domain; > u64 wwpn; > -- > 2.25.1 > Looks good. Thanks. Reviewed-by: Ram Vegesna <ram.vegesna@broadcom.com>
diff --git a/drivers/scsi/elx/libefc/efc_cmds.c b/drivers/scsi/elx/libefc/efc_cmds.c index 37e6697d86b8..f8665d48904a 100644 --- a/drivers/scsi/elx/libefc/efc_cmds.c +++ b/drivers/scsi/elx/libefc/efc_cmds.c @@ -249,6 +249,7 @@ efc_nport_attach_reg_vpi_cb(struct efc *efc, int status, u8 *mqe, { struct efc_nport *nport = arg; + nport->attaching = false; if (efc_nport_get_mbox_status(nport, mqe, status)) { efc_nport_free_resources(nport, EFC_EVT_NPORT_ATTACH_FAIL, mqe); return -EIO; @@ -286,6 +287,8 @@ efc_cmd_nport_attach(struct efc *efc, struct efc_nport *nport, u32 fc_id) if (rc) { efc_log_err(efc, "REG_VPI command failure\n"); efc_nport_free_resources(nport, EFC_EVT_NPORT_ATTACH_FAIL, buf); + } else { + nport->attaching = true; } return rc; @@ -302,8 +305,10 @@ efc_cmd_nport_free(struct efc *efc, struct efc_nport *nport) /* Issue the UNREG_VPI command to free the assigned VPI context */ if (nport->attached) efc_nport_free_unreg_vpi(nport); - else + else if (nport->attaching) nport->free_req_pending = true; + else + efc_sm_post_event(&nport->sm, EFC_EVT_NPORT_FREE_OK, NULL); return 0; } diff --git a/drivers/scsi/elx/libefc/efclib.h b/drivers/scsi/elx/libefc/efclib.h index ee291cabf7e0..dde20891c2dd 100644 --- a/drivers/scsi/elx/libefc/efclib.h +++ b/drivers/scsi/elx/libefc/efclib.h @@ -142,6 +142,7 @@ struct efc_nport { bool is_vport; bool free_req_pending; bool attached; + bool attaching; bool p2p_winner; struct efc_domain *domain; u64 wwpn;
nport_free for an empty nport hangs the state machine waiting for mbox completion if nport is not yet attached thinking that it is attaching right now. Add a check for nport attaching state and complete nport free. Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com> --- drivers/scsi/elx/libefc/efc_cmds.c | 7 ++++++- drivers/scsi/elx/libefc/efclib.h | 1 + 2 files changed, 7 insertions(+), 1 deletion(-)