lpfc: Unknown ELS command x18 received from NPORT xfffc2b

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We recently started to get

[8043768.238110] lpfc 0000:10:00.1: 1:(0):0115 Unknown ELS command x18 received from NPORT xfffc2b
[8130462.560283] lpfc 0000:10:00.1: 1:(0):0115 Unknown ELS command x18 received from NPORT xfffc2b
[8216439.442882] lpfc 0000:10:00.1: 1:(0):0115 Unknown ELS command x18 received from NPORT xfffc2b

Read Diagnostic Parameters (RDP) [1] support was introduced in Brocade Fabric OS 7.3 [2].

The following (untested) patch might silence the message.

[1] http://www.t11.org/ftp/t11/pub/fc/ls-3/14-033v0.pdf
[2] ftp://public.dhe.ibm.com/storage/san/fos7/v7.3.0c_ReleaseNotes_v1.0.pdf

Sebastian


diff -uNrp v4.0-1941-geeee78c/drivers/scsi/lpfc.orig/lpfc_els.c v4.0-1941-geeee78c/drivers/scsi/lpfc/lpfc_els.c
--- v4.0-1941-geeee78c/drivers/scsi/lpfc.orig/lpfc_els.c	2015-02-12 01:04:08.692134956 +0100
+++ v4.0-1941-geeee78c/drivers/scsi/lpfc/lpfc_els.c	2015-04-14 21:44:31.591639045 +0200
@@ -6970,6 +6970,10 @@ lpfc_els_unsol_buffer(struct lpfc_hba *p
 			rjt_err = LSRJT_UNABLE_TPC;
 			rjt_exp = LSEXP_INVALID_OX_RX;
 		break;
+	case ELS_CMD_RDP:
+		rjt_err = LSRJT_UNABLE_TPC;
+		rjt_exp = LSEXP_REQ_UNSUPPORTED;
+		break;
 	default:
 		lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_UNSOL,
 			"RCV ELS cmd:     cmd:x%x did:x%x/ste:x%x",
diff -uNrp v4.0-1941-geeee78c/drivers/scsi/lpfc.orig/lpfc_hw.h v4.0-1941-geeee78c/drivers/scsi/lpfc/lpfc_hw.h
--- v4.0-1941-geeee78c/drivers/scsi/lpfc.orig/lpfc_hw.h	2014-09-03 19:30:11.768273300 +0200
+++ v4.0-1941-geeee78c/drivers/scsi/lpfc/lpfc_hw.h	2015-04-14 21:18:10.039566920 +0200
@@ -540,6 +540,7 @@ struct fc_vft_header {
 #define ELS_CMD_TEST      0x11000000
 #define ELS_CMD_RRQ       0x12000000
 #define ELS_CMD_REC       0x13000000
+#define ELS_CMD_RDP       0x18000000
 #define ELS_CMD_PRLI      0x20100014
 #define ELS_CMD_PRLO      0x21100014
 #define ELS_CMD_PRLO_ACC  0x02100014
@@ -577,6 +578,7 @@ struct fc_vft_header {
 #define ELS_CMD_TEST      0x11
 #define ELS_CMD_RRQ       0x12
 #define ELS_CMD_REC       0x13
+#define ELS_CMD_RDP       0x18
 #define ELS_CMD_PRLI      0x14001020
 #define ELS_CMD_PRLO      0x14001021
 #define ELS_CMD_PRLO_ACC  0x14001002
--
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