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-rw-r--r--drivers/scsi/libfc/fc_rport.c185
1 files changed, 93 insertions, 92 deletions
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index d014b285cd1a..e121ff92c8ea 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -63,7 +63,7 @@ static void fc_rport_enter_rtv(struct fc_rport_priv *);
static void fc_rport_enter_ready(struct fc_rport_priv *);
static void fc_rport_enter_logo(struct fc_rport_priv *);
-static void fc_rport_recv_plogi_req(struct fc_rport_priv *,
+static void fc_rport_recv_plogi_req(struct fc_lport *,
struct fc_seq *, struct fc_frame *);
static void fc_rport_recv_prli_req(struct fc_rport_priv *,
struct fc_seq *, struct fc_frame *);
@@ -576,15 +576,7 @@ static void fc_rport_plogi_resp(struct fc_seq *sp, struct fc_frame *fp,
csp_seq = cssp_seq;
rdata->max_seq = csp_seq;
rdata->maxframe_size = fc_plogi_get_maxframe(plp, lport->mfs);
-
- /*
- * If the rport is one of the well known addresses
- * we skip PRLI and RTV and go straight to READY.
- */
- if (rdata->ids.port_id >= FC_FID_DOM_MGR)
- fc_rport_enter_ready(rdata);
- else
- fc_rport_enter_prli(rdata);
+ fc_rport_enter_prli(rdata);
} else
fc_rport_error_retry(rdata, fp);
@@ -763,6 +755,15 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
} *pp;
struct fc_frame *fp;
+ /*
+ * If the rport is one of the well known addresses
+ * we skip PRLI and RTV and go straight to READY.
+ */
+ if (rdata->ids.port_id >= FC_FID_DOM_MGR) {
+ fc_rport_enter_ready(rdata);
+ return;
+ }
+
FC_RPORT_DBG(rdata, "Port entered PRLI state from %s state\n",
fc_rport_state(rdata));
@@ -929,6 +930,15 @@ void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp,
els_data.explan = ELS_EXPL_NONE;
els_data.reason = ELS_RJT_NONE;
+ op = fc_frame_payload_op(fp);
+ switch (op) {
+ case ELS_PLOGI:
+ fc_rport_recv_plogi_req(lport, sp, fp);
+ return;
+ default:
+ break;
+ }
+
fh = fc_frame_header_get(fp);
s_id = ntoh24(fh->fh_s_id);
@@ -944,11 +954,7 @@ void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp,
mutex_lock(&rdata->rp_mutex);
mutex_unlock(&lport->disc.disc_mutex);
- op = fc_frame_payload_op(fp);
switch (op) {
- case ELS_PLOGI:
- fc_rport_recv_plogi_req(rdata, sp, fp);
- break;
case ELS_PRLI:
fc_rport_recv_prli_req(rdata, sp, fp);
break;
@@ -977,48 +983,56 @@ void fc_rport_recv_req(struct fc_seq *sp, struct fc_frame *fp,
/**
* fc_rport_recv_plogi_req() - Handle incoming Port Login (PLOGI) request
- * @rdata: private remote port data
+ * @lport: local port
* @sp: current sequence in the PLOGI exchange
* @fp: PLOGI request frame
*
- * Locking Note: The rport lock is exected to be held before calling
- * this function.
+ * Locking Note: The rport lock is held before calling this function.
*/
-static void fc_rport_recv_plogi_req(struct fc_rport_priv *rdata,
+static void fc_rport_recv_plogi_req(struct fc_lport *lport,
struct fc_seq *sp, struct fc_frame *rx_fp)
{
- struct fc_lport *lport = rdata->local_port;
+ struct fc_disc *disc;
+ struct fc_rport_priv *rdata;
struct fc_frame *fp = rx_fp;
struct fc_exch *ep;
struct fc_frame_header *fh;
struct fc_els_flogi *pl;
struct fc_seq_els_data rjt_data;
- u32 sid;
- u64 wwpn;
- u64 wwnn;
- enum fc_els_rjt_reason reject = 0;
- u32 f_ctl;
- rjt_data.fp = NULL;
+ u32 sid, f_ctl;
+ rjt_data.fp = NULL;
fh = fc_frame_header_get(fp);
+ sid = ntoh24(fh->fh_s_id);
- FC_RPORT_DBG(rdata, "Received PLOGI request while in state %s\n",
- fc_rport_state(rdata));
+ FC_RPORT_ID_DBG(lport, sid, "Received PLOGI request\n");
- sid = ntoh24(fh->fh_s_id);
pl = fc_frame_payload_get(fp, sizeof(*pl));
if (!pl) {
- FC_RPORT_DBG(rdata, "Received PLOGI too short\n");
- WARN_ON(1);
- /* XXX TBD: send reject? */
- fc_frame_free(fp);
- return;
+ FC_RPORT_ID_DBG(lport, sid, "Received PLOGI too short\n");
+ rjt_data.reason = ELS_RJT_PROT;
+ rjt_data.explan = ELS_EXPL_INV_LEN;
+ goto reject;
+ }
+
+ disc = &lport->disc;
+ mutex_lock(&disc->disc_mutex);
+ rdata = lport->tt.rport_create(lport, sid);
+ if (!rdata) {
+ mutex_unlock(&disc->disc_mutex);
+ rjt_data.reason = ELS_RJT_UNAB;
+ rjt_data.explan = ELS_EXPL_INSUF_RES;
+ goto reject;
}
- wwpn = get_unaligned_be64(&pl->fl_wwpn);
- wwnn = get_unaligned_be64(&pl->fl_wwnn);
+
+ mutex_lock(&rdata->rp_mutex);
+ mutex_unlock(&disc->disc_mutex);
+
+ rdata->ids.port_name = get_unaligned_be64(&pl->fl_wwpn);
+ rdata->ids.node_name = get_unaligned_be64(&pl->fl_wwnn);
/*
- * If the session was just created, possibly due to the incoming PLOGI,
+ * If the rport was just created, possibly due to the incoming PLOGI,
* set the state appropriately and accept the PLOGI.
*
* If we had also sent a PLOGI, and if the received PLOGI is from a
@@ -1030,72 +1044,58 @@ static void fc_rport_recv_plogi_req(struct fc_rport_priv *rdata,
*/
switch (rdata->rp_state) {
case RPORT_ST_INIT:
- FC_RPORT_DBG(rdata, "Received PLOGI, wwpn %llx state INIT "
- "- reject\n", (unsigned long long)wwpn);
- reject = ELS_RJT_UNSUP;
+ FC_RPORT_DBG(rdata, "Received PLOGI in INIT state\n");
break;
case RPORT_ST_PLOGI:
- FC_RPORT_DBG(rdata, "Received PLOGI in PLOGI state %d\n",
- rdata->rp_state);
- if (wwpn < lport->wwpn)
- reject = ELS_RJT_INPROG;
+ FC_RPORT_DBG(rdata, "Received PLOGI in PLOGI state\n");
+ if (rdata->ids.port_name < lport->wwpn) {
+ mutex_unlock(&rdata->rp_mutex);
+ rjt_data.reason = ELS_RJT_INPROG;
+ rjt_data.explan = ELS_EXPL_NONE;
+ goto reject;
+ }
break;
case RPORT_ST_PRLI:
case RPORT_ST_READY:
- FC_RPORT_DBG(rdata, "Received PLOGI in logged-in state %d "
- "- ignored for now\n", rdata->rp_state);
- /* XXX TBD - should reset */
break;
case RPORT_ST_DELETE:
default:
- FC_RPORT_DBG(rdata, "Received PLOGI in unexpected "
- "state %d\n", rdata->rp_state);
- fc_frame_free(fp);
- return;
- break;
+ FC_RPORT_DBG(rdata, "Received PLOGI in unexpected state %d\n",
+ rdata->rp_state);
+ fc_frame_free(rx_fp);
+ goto out;
}
- if (reject) {
- rjt_data.reason = reject;
- rjt_data.explan = ELS_EXPL_NONE;
- lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
- fc_frame_free(fp);
- } else {
- fp = fc_frame_alloc(lport, sizeof(*pl));
- if (fp == NULL) {
- fp = rx_fp;
- rjt_data.reason = ELS_RJT_UNAB;
- rjt_data.explan = ELS_EXPL_NONE;
- lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
- fc_frame_free(fp);
- } else {
- sp = lport->tt.seq_start_next(sp);
- WARN_ON(!sp);
- rdata->ids.port_name = wwpn;
- rdata->ids.node_name = wwnn;
-
- /*
- * Get session payload size from incoming PLOGI.
- */
- rdata->maxframe_size =
- fc_plogi_get_maxframe(pl, lport->mfs);
- fc_frame_free(rx_fp);
- fc_plogi_fill(lport, fp, ELS_LS_ACC);
-
- /*
- * Send LS_ACC. If this fails,
- * the originator should retry.
- */
- f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ;
- f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT;
- ep = fc_seq_exch(sp);
- fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
- FC_TYPE_ELS, f_ctl, 0);
- lport->tt.seq_send(lport, sp, fp);
- if (rdata->rp_state == RPORT_ST_PLOGI)
- fc_rport_enter_prli(rdata);
- }
- }
+ /*
+ * Get session payload size from incoming PLOGI.
+ */
+ rdata->maxframe_size = fc_plogi_get_maxframe(pl, lport->mfs);
+ fc_frame_free(rx_fp);
+
+ /*
+ * Send LS_ACC. If this fails, the originator should retry.
+ */
+ sp = lport->tt.seq_start_next(sp);
+ if (!sp)
+ goto out;
+ fp = fc_frame_alloc(lport, sizeof(*pl));
+ if (!fp)
+ goto out;
+
+ fc_plogi_fill(lport, fp, ELS_LS_ACC);
+ f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT;
+ ep = fc_seq_exch(sp);
+ fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
+ FC_TYPE_ELS, f_ctl, 0);
+ lport->tt.seq_send(lport, sp, fp);
+ fc_rport_enter_prli(rdata);
+out:
+ mutex_unlock(&rdata->rp_mutex);
+ return;
+
+reject:
+ lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
+ fc_frame_free(fp);
}
/**
@@ -1138,6 +1138,7 @@ static void fc_rport_recv_prli_req(struct fc_rport_priv *rdata,
switch (rdata->rp_state) {
case RPORT_ST_PRLI:
+ case RPORT_ST_RTV:
case RPORT_ST_READY:
reason = ELS_RJT_NONE;
break;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 19:00:50 +0000