From: Hannes Reinecke <hare@suse.de>
Date: Thu, 13 Oct 2016 13:10:56 +0000 (+0200)
Subject: scsi: fcoe: set default TC priority
X-Git-Tag: v4.14-rc1~1899^2~188
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c216e8762f96b6bddf043b5788094e0b698dd4b3;p=platform%2Fkernel%2Flinux-rpi3.git

scsi: fcoe: set default TC priority

If DCB is not enabled or compiled in we still should be setting
a sane default priority. So put FCoE frames in priority class
'interactive' and FIP frames in priority class 'besteffort'.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index c907661..9876fca 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -2168,6 +2168,8 @@ static bool fcoe_match(struct net_device *netdev)
  */
 static void fcoe_dcb_create(struct fcoe_interface *fcoe)
 {
+	int ctlr_prio = TC_PRIO_BESTEFFORT;
+	int fcoe_prio = TC_PRIO_INTERACTIVE;
 #ifdef CONFIG_DCB
 	int dcbx;
 	u8 fup, up;
@@ -2194,10 +2196,12 @@ static void fcoe_dcb_create(struct fcoe_interface *fcoe)
 			fup = dcb_getapp(netdev, &app);
 		}
 
-		fcoe->priority = ffs(up) ? ffs(up) - 1 : 0;
-		ctlr->priority = ffs(fup) ? ffs(fup) - 1 : fcoe->priority;
+		fcoe_prio = ffs(up) ? ffs(up) - 1 : 0;
+		ctlr_prio = ffs(fup) ? ffs(fup) - 1 : fcoe_prio;
 	}
 #endif
+	fcoe->priority = fcoe_prio;
+	ctlr->priority = ctlr_prio;
 }
 
 enum fcoe_create_link_state {