[PATCH v3 0/2] net/xen: Clean up

[PATCH v3 0/2] net/xen: Clean up

[Julien Grall]

Hi,

Those 2 patches was originally part of the Xen 64KB series [1]. They are
already acked/reviewed and  can go in Linux via the net tree now
without waiting the rest of the series.

Sincerely yours,

Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: netdev@vger.kernel.org

[1] http://lkml.org/lkml/2015/5/14/533

Julien Grall (2):
  net/xen-netfront: Correct printf format in xennet_get_responses
  net/xen-netback: Remove unused code in xenvif_rx_action

 drivers/net/xen-netback/netback.c | 5 -----
 drivers/net/xen-netfront.c        | 2 +-
 2 files changed, 1 insertion(+), 6 deletions(-)

-- 
2.1.4

[PATCH v3 1/2] net/xen-netfront: Correct printf format in xennet_get_responses

[Julien Grall]

rx->status is an int16_t, print it using %d rather than %u in order to
have a meaningful value when the field is negative.

Also use %d rather than %x for rx->offset.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: netdev@vger.kernel.org

---
    Changes in v3:
        - Use %d for the rx-offset too.

    Changes in v2:
        - Add David's Reviewed-by
---
 drivers/net/xen-netfront.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index e031c94..3c1ca8b 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -733,7 +733,7 @@ static int xennet_get_responses(struct netfront_queue *queue,
 		if (unlikely(rx->status < 0 ||
 			     rx->offset + rx->status > PAGE_SIZE)) {
 			if (net_ratelimit())
-				dev_warn(dev, "rx->offset: %x, size: %u\n",
+				dev_warn(dev, "rx->offset: %d, size: %d\n",
 					 rx->offset, rx->status);
 			xennet_move_rx_slot(queue, skb, ref);
 			err = -EINVAL;
-- 
2.1.4

Re: [PATCH v3 1/2] net/xen-netfront: Correct printf format in xennet_get_responses

[David Miller]

From: Julien Grall <julien.grall@citrix.com>
Date: Thu, 4 Jun 2015 16:35:13 +0100

> rx->status is an int16_t, print it using %d rather than %u in order to
> have a meaningful value when the field is negative.
> 
> Also use %d rather than %x for rx->offset.
> 
> Signed-off-by: Julien Grall <julien.grall@citrix.com>
> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> Cc: netdev@vger.kernel.org
> 
> ---
>     Changes in v3:
>         - Use %d for the rx-offset too.

This change in v3 is wrong, 'rx->offset' is unsigned therefore %u is
the correct format string to use.

[PATCH v3 2/2] net/xen-netback: Remove unused code in xenvif_rx_action

[Julien Grall]

The variables old_req_cons and ring_slots_used are assigned but never
used since commit 1650d5455bd2dc6b5ee134bd6fc1a3236c266b5b "xen-netback:
always fully coalesce guest Rx packets".

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: netdev@vger.kernel.org

---
    Changes in v2:
        - Add Wei's Acked-by
---
 drivers/net/xen-netback/netback.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 0d25943..ba3ae30 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -515,14 +515,9 @@ static void xenvif_rx_action(struct xenvif_queue *queue)
 
 	while (xenvif_rx_ring_slots_available(queue, XEN_NETBK_RX_SLOTS_MAX)
 	       && (skb = xenvif_rx_dequeue(queue)) != NULL) {
-		RING_IDX old_req_cons;
-		RING_IDX ring_slots_used;
-
 		queue->last_rx_time = jiffies;
 
-		old_req_cons = queue->rx.req_cons;
 		XENVIF_RX_CB(skb)->meta_slots_used = xenvif_gop_skb(skb, &npo, queue);
-		ring_slots_used = queue->rx.req_cons - old_req_cons;
 
 		__skb_queue_tail(&rxq, skb);
 	}
-- 
2.1.4