This patch enables LLD to listen to rport events and perform LLD
specific operations based on the rport event. This patch also stores
sp_features and spp_type in rdata for further reference by LLD.
Signed-off-by: Bhanu Prakash Gollapudi <bprakash@xxxxxxxxxxxx>
---
drivers/scsi/libfc/fc_npiv.c | 1 +
drivers/scsi/libfc/fc_rport.c | 19 ++++++++++++++++++-
include/scsi/libfc.h | 15 +++++++++++++++
3 files changed, 34 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/libfc/fc_npiv.c b/drivers/scsi/libfc/fc_npiv.c
index dd2b43b..076cd5f 100644
--- a/drivers/scsi/libfc/fc_npiv.c
+++ b/drivers/scsi/libfc/fc_npiv.c
@@ -86,6 +86,7 @@ struct fc_lport *fc_vport_id_lookup(struct fc_lport *n_port, u32 port_id)
return lport;
}
+EXPORT_SYMBOL(fc_vport_id_lookup);
/*
* When setting the link state of vports during an lport state change, it's
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index a7175ad..2f12f5c 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -145,8 +145,10 @@ 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 (port_id != FC_FID_DIR_SERV)
+ if (port_id != FC_FID_DIR_SERV) {
+ rdata->lld_event_callback = lport->tt.rport_event_callback;
list_add_rcu(&rdata->peers, &lport->disc.rports);
+ }
return rdata;
}
@@ -300,6 +302,10 @@ static void fc_rport_work(struct work_struct *work)
FC_RPORT_DBG(rdata, "callback ev %d\n", event);
rport_ops->event_callback(lport, rdata, event);
}
+ if (rdata->lld_event_callback) {
+ FC_RPORT_DBG(rdata, "lld callback ev %d\n", event);
+ rdata->lld_event_callback(lport, rdata, event);
+ }
kref_put(&rdata->kref, lport->tt.rport_destroy);
break;
@@ -313,6 +319,10 @@ static void fc_rport_work(struct work_struct *work)
FC_RPORT_DBG(rdata, "callback ev %d\n", event);
rport_ops->event_callback(lport, rdata, event);
}
+ if (rdata->lld_event_callback) {
+ FC_RPORT_DBG(rdata, "lld callback ev %d\n", event);
+ rdata->lld_event_callback(lport, rdata, event);
+ }
cancel_delayed_work_sync(&rdata->retry_work);
/*
@@ -878,6 +888,9 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
rdata->ids.port_name = get_unaligned_be64(&plp->fl_wwpn);
rdata->ids.node_name = get_unaligned_be64(&plp->fl_wwnn);
+ /* save plogi response sp_features for further reference */
+ rdata->sp_features = ntohs(plp->fl_csp.sp_features);
+
if (lport->point_to_multipoint)
fc_rport_login_complete(rdata, fp);
csp_seq = ntohs(plp->fl_csp.sp_tot_seq);
@@ -983,6 +996,7 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
resp_code = (pp->spp.spp_flags & FC_SPP_RESP_MASK);
FC_RPORT_DBG(rdata, "PRLI spp_flags = 0x%x\n",
pp->spp.spp_flags);
+ rdata->spp_type = pp->spp.spp_type;
if (resp_code != FC_SPP_RESP_ACK) {
if (resp_code == FC_SPP_RESP_CONF)
fc_rport_error(rdata, fp);
@@ -996,6 +1010,8 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
fcp_parm = ntohl(pp->spp.spp_params);
if (fcp_parm & FCP_SPPF_RETRY)
rdata->flags |= FC_RP_FLAGS_RETRY;
+ if (fcp_parm & FCP_SPPF_CONF_COMPL)
+ rdata->flags |= FC_RP_FLAGS_CONF_REQ;
rdata->supported_classes = FC_COS_CLASS3;
if (fcp_parm & FCP_SPPF_INIT_FCN)
@@ -1688,6 +1704,7 @@ static void fc_rport_recv_prli_req(struct fc_rport_priv *rdata,
*/
spp = &pp->spp;
while (len >= plen) {
+ rdata->spp_type = rspp->spp_type;
spp->spp_type = rspp->spp_type;
spp->spp_type_ext = rspp->spp_type_ext;
spp->spp_flags = rspp->spp_flags & FC_SPP_EST_IMG_PAIR;
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 8d719e8..c1b613a 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -156,6 +156,7 @@ struct fc_rport_libfc_priv {
#define FC_RP_FLAGS_REC_SUPPORTED (1 << 0)
#define FC_RP_FLAGS_RETRY (1 << 1)
#define FC_RP_STARTED (1 << 2)
+ #define FC_RP_FLAGS_CONF_REQ (1 << 3)
unsigned int e_d_tov;
unsigned int r_a_tov;
};
@@ -203,6 +204,11 @@ struct fc_rport_priv {
struct work_struct event_work;
u32 supported_classes;
struct rcu_head rcu;
+ u16 sp_features;
+ u8 spp_type;
+ void (*lld_event_callback)(struct fc_lport *,
+ struct fc_rport_priv *,
+ enum fc_rport_event);
};
/**
@@ -656,6 +662,15 @@ struct libfc_function_template {
void (*rport_destroy)(struct kref *);
/*
+ * Callback routine after the remote port is logged in
+ *
+ * STATUS: OPTIONAL
+ */
+ void (*rport_event_callback)(struct fc_lport *,
+ struct fc_rport_priv *,
+ enum fc_rport_event);
+
+ /*
* Send a fcp cmd from fsp pkt.
* Called with the SCSI host lock unlocked and irqs disabled.
*
--
1.7.0.6
--
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