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authorHannes Reinecke <hare@suse.de>2016-10-13 15:10:45 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2016-11-08 17:29:52 -0500
commit7c5a51b8f82fcfba1925fa64f08413c8258590d2 (patch)
tree06b35b7b279ea7152aaa4ad0d3c37c277f7740c7 /drivers/scsi/libfc/fc_rport.c
parent9f9504a7cdee39e167f0421346ff17568a5f29a0 (diff)
downloadop-kernel-dev-7c5a51b8f82fcfba1925fa64f08413c8258590d2.zip
op-kernel-dev-7c5a51b8f82fcfba1925fa64f08413c8258590d2.tar.gz
scsi: libfc: Implement RTV responder
The libfc stack generates an RTV request, so we should be implementing an RTV responder, too. Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Johannes Thumshirn <jth@kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/libfc/fc_rport.c')
-rw-r--r--drivers/scsi/libfc/fc_rport.c41
1 files changed, 40 insertions, 1 deletions
diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c
index d2d8607..426c399 100644
--- a/drivers/scsi/libfc/fc_rport.c
+++ b/drivers/scsi/libfc/fc_rport.c
@@ -1268,7 +1268,7 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
}
/**
- * fc_rport_els_rtv_resp() - Handler for Request Timeout Value (RTV) responses
+ * fc_rport_rtv_resp() - Handler for Request Timeout Value (RTV) responses
* @sp: The sequence the RTV was on
* @fp: The RTV response frame
* @rdata_arg: The remote port that sent the RTV response
@@ -1374,6 +1374,41 @@ static void fc_rport_enter_rtv(struct fc_rport_priv *rdata)
}
/**
+ * fc_rport_recv_rtv_req() - Handler for Read Timeout Value (RTV) requests
+ * @rdata: The remote port that sent the RTV request
+ * @in_fp: The RTV request frame
+ *
+ * Locking Note: Called with the lport and rport locks held.
+ */
+static void fc_rport_recv_rtv_req(struct fc_rport_priv *rdata,
+ struct fc_frame *in_fp)
+{
+ struct fc_lport *lport = rdata->local_port;
+ struct fc_frame *fp;
+ struct fc_els_rtv_acc *rtv;
+ struct fc_seq_els_data rjt_data;
+
+ FC_RPORT_DBG(rdata, "Received RTV request\n");
+
+ fp = fc_frame_alloc(lport, sizeof(*rtv));
+ if (!fp) {
+ rjt_data.reason = ELS_RJT_UNAB;
+ rjt_data.reason = ELS_EXPL_INSUF_RES;
+ lport->tt.seq_els_rsp_send(in_fp, ELS_LS_RJT, &rjt_data);
+ goto drop;
+ }
+ rtv = fc_frame_payload_get(fp, sizeof(*rtv));
+ rtv->rtv_cmd = ELS_LS_ACC;
+ rtv->rtv_r_a_tov = htonl(lport->r_a_tov);
+ rtv->rtv_e_d_tov = htonl(lport->e_d_tov);
+ rtv->rtv_toq = 0;
+ fc_fill_reply_hdr(fp, in_fp, FC_RCTL_ELS_REP, 0);
+ lport->tt.frame_send(lport, fp);
+drop:
+ fc_frame_free(in_fp);
+}
+
+/**
* fc_rport_logo_resp() - Handler for logout (LOGO) responses
* @sp: The sequence the LOGO was on
* @fp: The LOGO response frame
@@ -1678,6 +1713,9 @@ static void fc_rport_recv_els_req(struct fc_lport *lport, struct fc_frame *fp)
case ELS_RLS:
fc_rport_recv_rls_req(rdata, fp);
break;
+ case ELS_RTV:
+ fc_rport_recv_rtv_req(rdata, fp);
+ break;
default:
fc_frame_free(fp); /* can't happen */
break;
@@ -1729,6 +1767,7 @@ static void fc_rport_recv_req(struct fc_lport *lport, struct fc_frame *fp)
case ELS_RRQ:
case ELS_REC:
case ELS_RLS:
+ case ELS_RTV:
fc_rport_recv_els_req(lport, fp);
break;
default:
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