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author | Joe Eykholt <jeykholt@cisco.com> | 2009-08-25 14:00:50 -0700 |
---|---|---|
committer | James Bottomley <James.Bottomley@suse.de> | 2009-09-10 12:07:41 -0500 |
commit | 9fb9d32831fd687e427ec5b147bb690f468b99a0 (patch) | |
tree | c3b6c29cb94040718ea2fe00daac05abf10db714 /drivers/scsi/libfc/fc_disc.c | |
parent | 922aa210bcad4b34a7bb98ec9d318b7e59e7a5ca (diff) | |
download | linux-stable-9fb9d32831fd687e427ec5b147bb690f468b99a0.tar.gz linux-stable-9fb9d32831fd687e427ec5b147bb690f468b99a0.tar.bz2 linux-stable-9fb9d32831fd687e427ec5b147bb690f468b99a0.zip |
[SCSI] libfc: make fc_rport_priv the primary rport interface.
The rport and discovery modules deal with remote ports
before fc_remote_port_add() can be done, because the
full set of rport identifiers is not known at early stages.
In preparation for splitting the fc_rport/fc_rport_priv allocation,
make fc_rport_priv the primary interface for the remote port and
discovery engines.
The FCP / SCSI layers still deal with fc_rport and
fc_rport_libfc_priv, however.
Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/libfc/fc_disc.c')
-rw-r--r-- | drivers/scsi/libfc/fc_disc.c | 95 |
1 files changed, 34 insertions, 61 deletions
diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c index ecc625c20520..448ffc388656 100644 --- a/drivers/scsi/libfc/fc_disc.c +++ b/drivers/scsi/libfc/fc_disc.c @@ -49,7 +49,6 @@ static void fc_disc_gpn_ft_req(struct fc_disc *); static void fc_disc_gpn_ft_resp(struct fc_seq *, struct fc_frame *, void *); static int fc_disc_new_target(struct fc_disc *, struct fc_rport *, struct fc_rport_identifiers *); -static void fc_disc_del_target(struct fc_disc *, struct fc_rport *); static void fc_disc_done(struct fc_disc *); static void fc_disc_timeout(struct work_struct *); static void fc_disc_single(struct fc_disc *, struct fc_disc_port *); @@ -60,27 +59,19 @@ static void fc_disc_restart(struct fc_disc *); * @lport: Fibre Channel host port instance * @port_id: remote port port_id to match */ -struct fc_rport *fc_disc_lookup_rport(const struct fc_lport *lport, - u32 port_id) +struct fc_rport_priv *fc_disc_lookup_rport(const struct fc_lport *lport, + u32 port_id) { const struct fc_disc *disc = &lport->disc; - struct fc_rport *rport, *found = NULL; + struct fc_rport *rport; struct fc_rport_priv *rdata; - int disc_found = 0; list_for_each_entry(rdata, &disc->rports, peers) { rport = PRIV_TO_RPORT(rdata); - if (rport->port_id == port_id) { - disc_found = 1; - found = rport; - break; - } + if (rport->port_id == port_id) + return rdata; } - - if (!disc_found) - found = NULL; - - return found; + return NULL; } /** @@ -93,21 +84,18 @@ struct fc_rport *fc_disc_lookup_rport(const struct fc_lport *lport, void fc_disc_stop_rports(struct fc_disc *disc) { struct fc_lport *lport; - struct fc_rport *rport; struct fc_rport_priv *rdata, *next; lport = disc->lport; mutex_lock(&disc->disc_mutex); list_for_each_entry_safe(rdata, next, &disc->rports, peers) { - rport = PRIV_TO_RPORT(rdata); list_del(&rdata->peers); - lport->tt.rport_logoff(rport); + lport->tt.rport_logoff(rdata); } list_for_each_entry_safe(rdata, next, &disc->rogue_rports, peers) { - rport = PRIV_TO_RPORT(rdata); - lport->tt.rport_logoff(rport); + lport->tt.rport_logoff(rdata); } mutex_unlock(&disc->disc_mutex); @@ -116,18 +104,18 @@ void fc_disc_stop_rports(struct fc_disc *disc) /** * fc_disc_rport_callback() - Event handler for rport events * @lport: The lport which is receiving the event - * @rport: The rport which the event has occured on + * @rdata: private remote port data * @event: The event that occured * * Locking Note: The rport lock should not be held when calling * this function. */ static void fc_disc_rport_callback(struct fc_lport *lport, - struct fc_rport *rport, + struct fc_rport_priv *rdata, enum fc_rport_event event) { - struct fc_rport_priv *rdata = rport->dd_data; struct fc_disc *disc = &lport->disc; + struct fc_rport *rport = PRIV_TO_RPORT(rdata); FC_DISC_DBG(disc, "Received a %d event for port (%6x)\n", event, rport->port_id); @@ -169,7 +157,6 @@ static void fc_disc_recv_rscn_req(struct fc_seq *sp, struct fc_frame *fp, struct fc_disc *disc) { struct fc_lport *lport; - struct fc_rport *rport; struct fc_rport_priv *rdata; struct fc_els_rscn *rp; struct fc_els_rscn_page *pp; @@ -249,11 +236,10 @@ 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); - rport = lport->tt.rport_lookup(lport, dp->ids.port_id); - if (rport) { - rdata = rport->dd_data; + rdata = lport->tt.rport_lookup(lport, dp->ids.port_id); + if (rdata) { list_del(&rdata->peers); - lport->tt.rport_logoff(rport); + lport->tt.rport_logoff(rdata); } fc_disc_single(disc, dp); } @@ -308,16 +294,14 @@ static void fc_disc_recv_req(struct fc_seq *sp, struct fc_frame *fp, */ static void fc_disc_restart(struct fc_disc *disc) { - struct fc_rport *rport; struct fc_rport_priv *rdata, *next; struct fc_lport *lport = disc->lport; FC_DISC_DBG(disc, "Restarting discovery\n"); list_for_each_entry_safe(rdata, next, &disc->rports, peers) { - rport = PRIV_TO_RPORT(rdata); list_del(&rdata->peers); - lport->tt.rport_logoff(rport); + lport->tt.rport_logoff(rdata); } disc->requested = 1; @@ -335,6 +319,7 @@ static void fc_disc_start(void (*disc_callback)(struct fc_lport *, enum fc_disc_event), struct fc_lport *lport) { + struct fc_rport_priv *rdata; struct fc_rport *rport; struct fc_rport_identifiers ids; struct fc_disc *disc = &lport->disc; @@ -362,8 +347,9 @@ static void fc_disc_start(void (*disc_callback)(struct fc_lport *, * Handle point-to-point mode as a simple discovery * of the remote port. Yucky, yucky, yuck, yuck! */ - rport = disc->lport->ptp_rp; - if (rport) { + rdata = disc->lport->ptp_rp; + if (rdata) { + rport = PRIV_TO_RPORT(rdata); ids.port_id = rport->port_id; ids.port_name = rport->port_name; ids.node_name = rport->node_name; @@ -418,7 +404,9 @@ static int fc_disc_new_target(struct fc_disc *disc, * assigned the same FCID. This should be rare. * Delete the old one and fall thru to re-create. */ - fc_disc_del_target(disc, rport); + rdata = rport->dd_data; + list_del(&rdata->peers); + lport->tt.rport_logoff(rdata); rport = NULL; } } @@ -426,38 +414,27 @@ static int fc_disc_new_target(struct fc_disc *disc, ids->port_id != fc_host_port_id(lport->host) && ids->port_name != lport->wwpn) { if (!rport) { - rport = lport->tt.rport_lookup(lport, ids->port_id); + rdata = lport->tt.rport_lookup(lport, ids->port_id); if (!rport) { - rport = lport->tt.rport_create(lport, ids); + rdata = lport->tt.rport_create(lport, ids); } - if (!rport) + if (!rdata) error = -ENOMEM; + else + rport = PRIV_TO_RPORT(rdata); } if (rport) { rdata = rport->dd_data; rdata->ops = &fc_disc_rport_ops; rdata->rp_state = RPORT_ST_INIT; list_add_tail(&rdata->peers, &disc->rogue_rports); - lport->tt.rport_login(rport); + lport->tt.rport_login(rdata); } } return error; } /** - * fc_disc_del_target() - Delete a target - * @disc: FC discovery context - * @rport: The remote port to be removed - */ -static void fc_disc_del_target(struct fc_disc *disc, struct fc_rport *rport) -{ - struct fc_lport *lport = disc->lport; - struct fc_rport_priv *rdata = rport->dd_data; - list_del(&rdata->peers); - lport->tt.rport_logoff(rport); -} - -/** * fc_disc_done() - Discovery has been completed * @disc: FC discovery context * Locking Note: This function expects that the disc mutex is locked before @@ -573,7 +550,6 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len) size_t tlen; int error = 0; struct fc_rport_identifiers ids; - struct fc_rport *rport; struct fc_rport_priv *rdata; lport = disc->lport; @@ -622,14 +598,13 @@ static int fc_disc_gpn_ft_parse(struct fc_disc *disc, void *buf, size_t len) if (ids.port_id != fc_host_port_id(lport->host) && ids.port_name != lport->wwpn) { - rport = lport->tt.rport_create(lport, &ids); - if (rport) { - rdata = rport->dd_data; + rdata = lport->tt.rport_create(lport, &ids); + if (rdata) { rdata->ops = &fc_disc_rport_ops; rdata->local_port = lport; list_add_tail(&rdata->peers, &disc->rogue_rports); - lport->tt.rport_login(rport); + lport->tt.rport_login(rdata); } else printk(KERN_WARNING "libfc: Failed to allocate " "memory for the newly discovered port " @@ -766,7 +741,6 @@ static void fc_disc_gpn_ft_resp(struct fc_seq *sp, struct fc_frame *fp, static void fc_disc_single(struct fc_disc *disc, struct fc_disc_port *dp) { struct fc_lport *lport; - struct fc_rport *new_rport; struct fc_rport_priv *rdata; lport = disc->lport; @@ -774,13 +748,12 @@ static void fc_disc_single(struct fc_disc *disc, struct fc_disc_port *dp) if (dp->ids.port_id == fc_host_port_id(lport->host)) goto out; - new_rport = lport->tt.rport_create(lport, &dp->ids); - if (new_rport) { - rdata = new_rport->dd_data; + rdata = lport->tt.rport_create(lport, &dp->ids); + if (rdata) { rdata->ops = &fc_disc_rport_ops; kfree(dp); list_add_tail(&rdata->peers, &disc->rogue_rports); - lport->tt.rport_login(new_rport); + lport->tt.rport_login(rdata); } return; out: |