linux-kernel - [PATCH 4.0 019/105] xen/netback: Properly initialize credit

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Message-Id: <20150619203558.782405763@linuxfoundation.org>
Date:	Fri, 19 Jun 2015 13:35:09 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Ross Lagerwall <ross.lagerwall@...rix.com>,
	Wei Liu <wei.liu2@...rix.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.0 019/105] xen/netback: Properly initialize credit_bytes

4.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ross Lagerwall <ross.lagerwall@...rix.com>

[ Upstream commit ce0e5c522d3924090c20e774359809a7aa08c44c ]

Commit e9ce7cb6b107 ("xen-netback: Factor queue-specific data into queue
struct") introduced a regression when moving queue-specific data into
the queue struct by failing to set the credit_bytes field. This
prevented bandwidth limiting from working. Initialize the field as it
was done before multiqueue support was added.

Signed-off-by: Ross Lagerwall <ross.lagerwall@...rix.com>
Acked-by: Wei Liu <wei.liu2@...rix.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/xen-netback/xenbus.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -736,6 +736,7 @@ static void connect(struct backend_info
 			goto err;
 		}
 
+		queue->credit_bytes = credit_bytes;
 		queue->remaining_credit = credit_bytes;
 		queue->credit_usec = credit_usec;
 


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