From 9737e6a7b5b8af48f983cd565df93493597c565b Mon Sep 17 00:00:00 2001 From: Robert Love Date: Tue, 25 Aug 2009 14:02:59 -0700 Subject: [PATCH] [SCSI] libfc: Initialize fc_rport_identifiers inside fc_rport_create Currently these values are initialized by the callers. This was exposed by a later patch that adds PLOGI request support. The patch failed to initialize the new remote port's roles and it caused problems. This patch has the rport_create routine initialize the identifiers and then the callers can override them with real values. Signed-off-by: Robert Love Signed-off-by: James Bottomley --- drivers/scsi/libfc/fc_disc.c | 20 ++++++++------------ drivers/scsi/libfc/fc_lport.c | 19 ++++--------------- drivers/scsi/libfc/fc_rport.c | 18 +++++++++++------- include/scsi/libfc.h | 17 +++++++++-------- 4 files changed, 32 insertions(+), 42 deletions(-) diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c index 1a699f484c85..4242894cce7c 100644 --- a/drivers/scsi/libfc/fc_disc.c +++ b/drivers/scsi/libfc/fc_disc.c @@ -137,10 +137,7 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, break; } dp->lp = lport; - dp->ids.port_id = ntoh24(pp->rscn_fid); - dp->ids.port_name = -1; - dp->ids.node_name = -1; - dp->ids.roles = FC_RPORT_ROLE_UNKNOWN; + dp->port_id = ntoh24(pp->rscn_fid); list_add_tail(&dp->peers, &disc_ports); break; case ELS_ADDR_FMT_AREA: @@ -162,7 +159,7 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, redisc, lport->state, disc->pending); list_for_each_entry_safe(dp, next, &disc_ports, peers) { list_del(&dp->peers); - rdata = lport->tt.rport_lookup(lport, dp->ids.port_id); + rdata = lport->tt.rport_lookup(lport, dp->port_id); if (rdata) { lport->tt.rport_logoff(rdata); } @@ -435,15 +432,14 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len) while (plen >= sizeof(*np)) { ids.port_id = ntoh24(np->fp_fid); ids.port_name = ntohll(np->fp_wwpn); - ids.node_name = -1; - ids.roles = FC_RPORT_ROLE_UNKNOWN; if (ids.port_id != fc_host_port_id(lport->host) && ids.port_name != lport->wwpn) { - rdata = lport->tt.rport_create(lport, &ids); - if (rdata) + rdata = lport->tt.rport_create(lport, ids.port_id); + if (rdata) { + rdata->ids.port_name = ids.port_name; rdata->disc_id = disc->disc_id; - else { + } else { printk(KERN_WARNING "libfc: Failed to allocate " "memory for the newly discovered port " "(%6x)\n", ids.port_id); @@ -580,10 +576,10 @@ static void fc_disc_single(struct fc_disc *disc, struct fc_disc_port *dp) lport = disc->lport; - if (dp->ids.port_id == fc_host_port_id(lport->host)) + if (dp->port_id == fc_host_port_id(lport->host)) goto out; - rdata = lport->tt.rport_create(lport, &dp->ids); + rdata = lport->tt.rport_create(lport, dp->port_id); if (rdata) { rdata->disc_id = disc->disc_id; kfree(dp); diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index 7000df573691..caf68240bddf 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -198,17 +198,12 @@ static void fc_lport_ptp_setup(struct fc_lport *lport, u32 remote_fid, u64 remote_wwpn, u64 remote_wwnn) { - struct fc_rport_identifiers ids; - - ids.port_id = remote_fid; - ids.port_name = remote_wwpn; - ids.node_name = remote_wwnn; - ids.roles = FC_RPORT_ROLE_UNKNOWN; - mutex_lock(&lport->disc.disc_mutex); if (lport->ptp_rp) lport->tt.rport_logoff(lport->ptp_rp); - lport->ptp_rp = lport->tt.rport_create(lport, &ids); + lport->ptp_rp = lport->tt.rport_create(lport, remote_fid); + lport->ptp_rp->ids.port_name = remote_wwpn; + lport->ptp_rp->ids.node_name = remote_wwnn; mutex_unlock(&lport->disc.disc_mutex); lport->tt.rport_login(lport->ptp_rp); @@ -1287,12 +1282,6 @@ static struct fc_rport_operations fc_lport_rport_ops = { static void fc_lport_enter_dns(struct fc_lport *lport) { struct fc_rport_priv *rdata; - struct fc_rport_identifiers ids; - - ids.port_id = FC_FID_DIR_SERV; - ids.port_name = -1; - ids.node_name = -1; - ids.roles = FC_RPORT_ROLE_UNKNOWN; FC_LPORT_DBG(lport, "Entered DNS state from %s state\n", fc_lport_state(lport)); @@ -1300,7 +1289,7 @@ static void fc_lport_enter_dns(struct fc_lport *lport) fc_lport_state_enter(lport, LPORT_ST_DNS); mutex_lock(&lport->disc.disc_mutex); - rdata = lport->tt.rport_create(lport, &ids); + rdata = lport->tt.rport_create(lport, FC_FID_DIR_SERV); mutex_unlock(&lport->disc.disc_mutex); if (!rdata) goto err; diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c index 99ac056293f5..c667be879be6 100644 --- a/drivers/scsi/libfc/fc_rport.c +++ b/drivers/scsi/libfc/fc_rport.c @@ -104,18 +104,18 @@ static struct fc_rport_priv *fc_rport_lookup(const struct fc_lport *lport, } /** - * fc_rport_create() - create remote port in INIT state. - * @lport: local port. - * @ids: remote port identifiers. + * fc_rport_create() - Create a new remote port + * @lport: The local port that the new remote port is for + * @port_id: The port ID for the new remote port * * Locking note: must be called with the disc_mutex held. */ static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport, - struct fc_rport_identifiers *ids) + u32 port_id) { struct fc_rport_priv *rdata; - rdata = lport->tt.rport_lookup(lport, ids->port_id); + rdata = lport->tt.rport_lookup(lport, port_id); if (rdata) return rdata; @@ -123,7 +123,11 @@ static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport, if (!rdata) return NULL; - rdata->ids = *ids; + rdata->ids.node_name = -1; + rdata->ids.port_name = -1; + rdata->ids.port_id = port_id; + rdata->ids.roles = FC_RPORT_ROLE_UNKNOWN; + kref_init(&rdata->kref); mutex_init(&rdata->rp_mutex); rdata->local_port = lport; @@ -135,7 +139,7 @@ static struct fc_rport_priv *fc_rport_create(struct fc_lport *lport, rdata->maxframe_size = FC_MIN_MAX_PAYLOAD; INIT_DELAYED_WORK(&rdata->retry_work, fc_rport_timeout); INIT_WORK(&rdata->event_work, fc_rport_work); - if (ids->port_id != FC_FID_DIR_SERV) + if (port_id != FC_FID_DIR_SERV) list_add(&rdata->peers, &lport->disc.rports); return rdata; } diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index 517dce5c8d0d..cd410c123b99 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -148,16 +148,16 @@ enum fc_rport_state { /** * struct fc_disc_port - temporary discovery port to hold rport identifiers - * @lp: Fibre Channel host port instance - * @peers: node for list management during discovery and RSCN processing - * @ids: identifiers structure to pass to fc_remote_port_add() - * @rport_work: work struct for starting the rport state machine + * @lp: Fibre Channel host port instance + * @peers: Node for list management during discovery and RSCN processing + * @rport_work: Work struct for starting the rport state machine + * @port_id: Port ID of the discovered port */ struct fc_disc_port { struct fc_lport *lp; struct list_head peers; - struct fc_rport_identifiers ids; struct work_struct rport_work; + u32 port_id; }; enum fc_rport_event { @@ -565,10 +565,11 @@ struct libfc_function_template { int (*lport_reset)(struct fc_lport *); /* - * Create a remote port + * Create a remote port with a given port ID + * + * STATUS: OPTIONAL */ - struct fc_rport_priv *(*rport_create)(struct fc_lport *, - struct fc_rport_identifiers *); + struct fc_rport_priv *(*rport_create)(struct fc_lport *, u32); /* * Initiates the RP state machine. It is called from the LP module.