diff options
| author | Chris Leech <christopher.leech@intel.com> | 2009-11-03 11:46:14 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-12-04 12:00:56 -0600 |
| commit | 174e1ebffd30a7599b889900089f7acef944cc6b (patch) | |
| tree | 69b5d4e22f1b997128789eddcd1ec61a33d5903e /drivers/scsi/libfc/fc_exch.c | |
| parent | 86221969e20a2f60ce104160dc836a964974673b (diff) | |
[SCSI] libfc: add some generic NPIV support routines to libfc
Adds a function to create a new VN_Port instances, which share the EM
list with the N_Port, VN_Port lookup by fabric ID when responding to a new
request (otherwise the exchange lookup from the N_Ports EM list is trusted to
return an exchange with a cached lport value for the correct VN_Port),
a pointer to a fc_vport structure for VN_Ports, and flags to indicate if an
N_Port supports NPIV and if the switch/fabric allows it.
Signed-off-by: Chris Leech <christopher.leech@intel.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_exch.c')
| -rw-r--r-- | drivers/scsi/libfc/fc_exch.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c index ee6031e24c1..751a485685d 100644 --- a/drivers/scsi/libfc/fc_exch.c +++ b/drivers/scsi/libfc/fc_exch.c @@ -1134,6 +1134,15 @@ static void fc_exch_recv_req(struct fc_lport *lp, struct fc_exch_mgr *mp, u32 f_ctl; enum fc_pf_rjt_reason reject; + /* We can have the wrong fc_lport at this point with NPIV, which is a + * problem now that we know a new exchange needs to be allocated + */ + lp = fc_vport_id_lookup(lp, ntoh24(fh->fh_d_id)); + if (!lp) { + fc_frame_free(fp); + return; + } + fr_seq(fp) = NULL; reject = fc_seq_lookup_recip(lp, mp, fp); if (reject == FC_RJT_NONE) { @@ -1900,6 +1909,26 @@ void fc_exch_mgr_del(struct fc_exch_mgr_anchor *ema) } EXPORT_SYMBOL(fc_exch_mgr_del); +/** + * fc_exch_mgr_list_clone() - share all exchange manager objects + * @src: source lport to clone exchange managers from + * @dst: new lport that takes references to all the exchange managers + */ +int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst) +{ + struct fc_exch_mgr_anchor *ema, *tmp; + + list_for_each_entry(ema, &src->ema_list, ema_list) { + if (!fc_exch_mgr_add(dst, ema->mp, ema->match)) + goto err; + } + return 0; +err: + list_for_each_entry_safe(ema, tmp, &dst->ema_list, ema_list) + fc_exch_mgr_del(ema); + return -ENOMEM; +} + struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *lp, enum fc_class class, u16 min_xid, u16 max_xid, |