From 17c201b3281cfc2c7d7ecfabb33313b747e414cb Mon Sep 17 00:00:00 2001 From: Krishna Gudipati Date: Mon, 9 Apr 2012 18:40:01 -0700 Subject: [PATCH] [SCSI] bfa: Fix to defer vport delete handler invocation till firmware logo response. Made changes to avoid queuing the vport delete work to IM driver work queue in the bfa_fcb_lport_delete() - since at this stage we are not completely done with using the vport structure as we are still waiting for the LOGO response from the fw in online state or just doing some cleanup. Since queuing up the vport delete work at this stage will result in the FC transport layer to clean up the vport before we get the response from firmware. Made changes to queue the port delete work to the IM driver work queue - from the bfa_fcs_vport_free() function since at this state we are done with using the vport data structure and the FCS state machine is completely cleaned up. Signed-off-by: Krishna Gudipati Signed-off-by: James Bottomley --- drivers/scsi/bfa/bfa_fcs.h | 3 --- drivers/scsi/bfa/bfa_fcs_lport.c | 26 ++++++++++++++------------ drivers/scsi/bfa/bfad.c | 17 ----------------- drivers/scsi/bfa/bfad_attr.c | 1 + 4 files changed, 15 insertions(+), 32 deletions(-) diff --git a/drivers/scsi/bfa/bfa_fcs.h b/drivers/scsi/bfa/bfa_fcs.h index e75e07d25915..51c9e1345719 100644 --- a/drivers/scsi/bfa/bfa_fcs.h +++ b/drivers/scsi/bfa/bfa_fcs.h @@ -799,9 +799,6 @@ struct bfad_port_s *bfa_fcb_lport_new(struct bfad_s *bfad, enum bfa_lport_role roles, struct bfad_vf_s *vf_drv, struct bfad_vport_s *vp_drv); -void bfa_fcb_lport_delete(struct bfad_s *bfad, enum bfa_lport_role roles, - struct bfad_vf_s *vf_drv, - struct bfad_vport_s *vp_drv); /* * vport callbacks diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c index 5d2a1307e5ce..cd01fc02c4cd 100644 --- a/drivers/scsi/bfa/bfa_fcs_lport.c +++ b/drivers/scsi/bfa/bfa_fcs_lport.c @@ -709,14 +709,10 @@ bfa_fcs_lport_deleted(struct bfa_fcs_lport_s *port) bfa_fcs_lport_aen_post(port, BFA_LPORT_AEN_DELETE); /* Base port will be deleted by the OS driver */ - if (port->vport) { - bfa_fcb_lport_delete(port->fcs->bfad, port->port_cfg.roles, - port->fabric->vf_drv, - port->vport ? port->vport->vport_drv : NULL); + if (port->vport) bfa_fcs_vport_delete_comp(port->vport); - } else { + else bfa_wc_down(&port->fabric->wc); - } } @@ -5714,17 +5710,23 @@ bfa_fcs_vport_free(struct bfa_fcs_vport_s *vport) (struct bfad_vport_s *)vport->vport_drv; bfa_fcs_fabric_delvport(__vport_fabric(vport), vport); + bfa_lps_delete(vport->lps); - if (vport_drv->comp_del) + if (vport_drv->comp_del) { complete(vport_drv->comp_del); - else - kfree(vport_drv); + return; + } - bfa_lps_delete(vport->lps); + /* + * We queue the vport delete work to the IM work_q from here. + * The memory for the bfad_vport_s is freed from the FC function + * template vport_delete entry point. + */ + if (vport_drv) + bfad_im_port_delete(vport_drv->drv_port.bfad, + &vport_drv->drv_port); } - - /* * fcs_vport_public FCS virtual port public interfaces */ diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c index 404fd10ddb21..2e4b0be14a20 100644 --- a/drivers/scsi/bfa/bfad.c +++ b/drivers/scsi/bfa/bfad.c @@ -456,23 +456,6 @@ bfa_fcb_lport_new(struct bfad_s *bfad, struct bfa_fcs_lport_s *port, return port_drv; } -void -bfa_fcb_lport_delete(struct bfad_s *bfad, enum bfa_lport_role roles, - struct bfad_vf_s *vf_drv, struct bfad_vport_s *vp_drv) -{ - struct bfad_port_s *port_drv; - - /* this will be only called from rmmod context */ - if (vp_drv && !vp_drv->comp_del) { - port_drv = (vp_drv) ? (&(vp_drv)->drv_port) : - ((vf_drv) ? (&(vf_drv)->base_port) : - (&(bfad)->pport)); - bfa_trc(bfad, roles); - if (roles & BFA_LPORT_ROLE_FCP_IM) - bfad_im_port_delete(bfad, port_drv); - } -} - /* * FCS RPORT alloc callback, after successful PLOGI by FCS */ diff --git a/drivers/scsi/bfa/bfad_attr.c b/drivers/scsi/bfa/bfad_attr.c index 7b1ecd2b3ffe..d12be9dff4ba 100644 --- a/drivers/scsi/bfa/bfad_attr.c +++ b/drivers/scsi/bfa/bfad_attr.c @@ -497,6 +497,7 @@ bfad_im_vport_delete(struct fc_vport *fc_vport) if (im_port->flags & BFAD_PORT_DELETE) { bfad_scsi_host_free(bfad, im_port); list_del(&vport->list_entry); + kfree(vport); return 0; } -- 2.20.1