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[SCSI] libfc: use PRLI hook to get parameters when sending outgoing PRLI 

When sending an outgoing PRLI as an initiator, get the parameters
from registered providers so that they all get a chance to decide
on roles.

The passive provider is called last, and could override the
initiator role.

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>
This commit is contained in:
Joe Eykholt 2011-01-28 16:04:23 -08:00 committed by James Bottomley
parent 70d53b046a
commit 925cedae2b
1 changed files with 24 additions and 3 deletions
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27
drivers/scsi/libfc/fc_rport.c
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@ -961,6 +961,8 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
struct fc_els_prli prli;
struct fc_els_spp spp;
} *pp;
struct fc_els_spp temp_spp;
struct fc4_prov *prov;
u32 roles = FC_RPORT_ROLE_UNKNOWN;
u32 fcp_parm = 0;
u8 op;
@ -1009,6 +1011,13 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
if (fcp_parm & FCP_SPPF_RETRY)
rdata->flags |= FC_RP_FLAGS_RETRY;
prov = fc_passive_prov[FC_TYPE_FCP];
if (prov) {
memset(&temp_spp, 0, sizeof(temp_spp));
prov->prli(rdata, pp->prli.prli_spp_len,
&pp->spp, &temp_spp);
}
rdata->supported_classes = FC_COS_CLASS3;
if (fcp_parm & FCP_SPPF_INIT_FCN)
roles |= FC_RPORT_ROLE_FCP_INITIATOR;
@ -1045,6 +1054,7 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
struct fc_els_spp spp;
} *pp;
struct fc_frame *fp;
struct fc4_prov *prov;
/*
* If the rport is one of the well known addresses
@ -1066,9 +1076,20 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
return;
}
if (!lport->tt.elsct_send(lport, rdata->ids.port_id, fp, ELS_PRLI,
fc_rport_prli_resp, rdata,
2 * lport->r_a_tov))
fc_prli_fill(lport, fp);
prov = fc_passive_prov[FC_TYPE_FCP];
if (prov) {
pp = fc_frame_payload_get(fp, sizeof(*pp));
prov->prli(rdata, sizeof(pp->spp), NULL, &pp->spp);
}
fc_fill_fc_hdr(fp, FC_RCTL_ELS_REQ, rdata->ids.port_id,
fc_host_port_id(lport->host), FC_TYPE_ELS,
FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT, 0);
if (!lport->tt.exch_seq_send(lport, fp, fc_rport_prli_resp,
NULL, rdata, 2 * lport->r_a_tov))
fc_rport_error_retry(rdata, NULL);
else
kref_get(&rdata->kref);