diff mbox

[net,v2] xen/netback: Properly initialize credit_bytes

Message ID 1432723472-7793-1-git-send-email-ross.lagerwall@citrix.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Ross Lagerwall May 27, 2015, 10:44 a.m. UTC
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@citrix.com>
---

Changed in v2: Fixed multiple-assignment.

 drivers/net/xen-netback/xenbus.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Wei Liu May 27, 2015, 10:46 a.m. UTC | #1
On Wed, May 27, 2015 at 11:44:32AM +0100, Ross Lagerwall wrote:
> 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@citrix.com>

Acked-by: Wei Liu <wei.liu2@citrix.com>

> ---
> 
> Changed in v2: Fixed multiple-assignment.
> 
>  drivers/net/xen-netback/xenbus.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
> index 3d8dbf5..fee0241 100644
> --- a/drivers/net/xen-netback/xenbus.c
> +++ b/drivers/net/xen-netback/xenbus.c
> @@ -793,6 +793,7 @@ static void connect(struct backend_info *be)
>  			goto err;
>  		}
>  
> +		queue->credit_bytes = credit_bytes;
>  		queue->remaining_credit = credit_bytes;
>  		queue->credit_usec = credit_usec;
>  
> -- 
> 2.1.0
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David Miller May 27, 2015, 4:57 p.m. UTC | #2
From: Ross Lagerwall <ross.lagerwall@citrix.com>
Date: Wed, 27 May 2015 11:44:32 +0100

> 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@citrix.com>

Applied, thanks Ross.
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diff mbox

Patch

diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
index 3d8dbf5..fee0241 100644
--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -793,6 +793,7 @@  static void connect(struct backend_info *be)
 			goto err;
 		}
 
+		queue->credit_bytes = credit_bytes;
 		queue->remaining_credit = credit_bytes;
 		queue->credit_usec = credit_usec;