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[SCSI] libfc: Extending lport's roles for target if there is a registered target. 

Problem:

From initaitor machine, when queried role of target (other end of connection),
it is "initiator", hence SCSI-ml doesn't send any LUN Inquiry commands.

Fix:

If there is a registered target for FC_TYPE_FCP, extend lport's params
(capability) to be target as well, By default lport params are
INITIATOR only. Having this fix, caused initiator to send SCSI LUN
inquiry command to target.

Signed-off-by: Kiran Patil <kiran.patil@intel.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:
Kiran Patil 2011-01-28 16:05:22 -08:00 committed by James Bottomley
parent 78a582463c
commit acc1a92165
3 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/scsi/libfc/fc_libfc.c
View File

@ -232,6 +232,25 @@ void fc_fill_reply_hdr(struct fc_frame *fp, const struct fc_frame *in_fp,
}
EXPORT_SYMBOL(fc_fill_reply_hdr);
/**
* fc_fc4_conf_lport_params() - Modify "service_params" of specified lport
* if there is service provider (target provider) registered with libfc
* for specified "fc_ft_type"
* @lport: Local port which service_params needs to be modified
* @type: FC-4 type, such as FC_TYPE_FCP
*/
void fc_fc4_conf_lport_params(struct fc_lport *lport, enum fc_fh_type type)
{
struct fc4_prov *prov_entry;
BUG_ON(type >= FC_FC4_PROV_SIZE);
BUG_ON(!lport);
prov_entry = fc_passive_prov[type];
if (type == FC_TYPE_FCP) {
if (prov_entry && prov_entry->recv)
lport->service_params |= FCP_SPPF_TARG_FCN;
}
}
void fc_lport_iterate(void (*notify)(struct fc_lport *, void *), void *arg)
{
struct fc_lport *lport;

1
drivers/scsi/libfc/fc_libfc.h
View File

@ -125,6 +125,7 @@ void fc_destroy_fcp(void);
const char *fc_els_resp_type(struct fc_frame *);
extern void fc_fc4_add_lport(struct fc_lport *);
extern void fc_fc4_del_lport(struct fc_lport *);
extern void fc_fc4_conf_lport_params(struct fc_lport *, enum fc_fh_type);
/*
* Copies a buffer into an sg list

1
drivers/scsi/libfc/fc_lport.c
View File

@ -1597,6 +1597,7 @@ int fc_lport_config(struct fc_lport *lport)
fc_lport_add_fc4_type(lport, FC_TYPE_FCP);
fc_lport_add_fc4_type(lport, FC_TYPE_CT);
fc_fc4_conf_lport_params(lport, FC_TYPE_FCP);
return 0;
}