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authorPravin B Shelar <pshelar@nicira.com>2013-05-13 08:22:34 -0700
committerJesse Gross <jesse@nicira.com>2013-06-14 15:09:10 -0700
commit91b7514cdff406ad8f63d09b74f664c37bed2e01 (patch)
treee74b566546cfb0ec1b48baa9cc39acd647256bd9 /net/openvswitch
parentcbd531bebb02bc6c0fc3619a2cfc32f7d8843b18 (diff)
downloadlinux-91b7514cdff406ad8f63d09b74f664c37bed2e01.tar.gz
openvswitch: Unify vport error stats handling.
Following patch changes vport->send return type so that vport
layer can do error accounting.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Diffstat (limited to 'net/openvswitch')
-rw-r--r--net/openvswitch/vport-netdev.c5
-rw-r--r--net/openvswitch/vport.c9
-rw-r--r--net/openvswitch/vport.h3
3 files changed, 11 insertions, 6 deletions
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c
index 4f01c6d2ffa4..43712217a372 100644
--- a/net/openvswitch/vport-netdev.c
+++ b/net/openvswitch/vport-netdev.c
@@ -170,7 +170,7 @@ static int netdev_send(struct vport *vport, struct sk_buff *skb)
 		net_warn_ratelimited("%s: dropped over-mtu packet: %d > %d\n",
 				     netdev_vport->dev->name,
 				     packet_length(skb), mtu);
-		goto error;
+		goto drop;
 	}
 
 	skb->dev = netdev_vport->dev;
@@ -179,9 +179,8 @@ static int netdev_send(struct vport *vport, struct sk_buff *skb)
 
 	return len;
 
-error:
+drop:
 	kfree_skb(skb);
-	ovs_vport_record_error(vport, VPORT_E_TX_DROPPED);
 	return 0;
 }
 
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 720623190eaa..7f20f6d1be94 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -351,7 +351,7 @@ int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
 {
 	int sent = vport->ops->send(vport, skb);
 
-	if (likely(sent)) {
+	if (likely(sent > 0)) {
 		struct pcpu_tstats *stats;
 
 		stats = this_cpu_ptr(vport->percpu_stats);
@@ -360,7 +360,12 @@ int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
 		stats->tx_packets++;
 		stats->tx_bytes += sent;
 		u64_stats_update_end(&stats->syncp);
-	}
+	} else if (sent < 0) {
+		ovs_vport_record_error(vport, VPORT_E_TX_ERROR);
+		kfree_skb(skb);
+	} else
+		ovs_vport_record_error(vport, VPORT_E_TX_DROPPED);
+
 	return sent;
 }
 
diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h
index 26c594b1a470..1cef5cd3be47 100644
--- a/net/openvswitch/vport.h
+++ b/net/openvswitch/vport.h
@@ -123,7 +123,8 @@ struct vport_parms {
  * existing vport to a &struct sk_buff.  May be %NULL for a vport that does not
  * have any configuration.
  * @get_name: Get the device's name.
- * @send: Send a packet on the device.  Returns the length of the packet sent.
+ * @send: Send a packet on the device.  Returns the length of the packet sent,
+ * zero for dropped packets or negative for error.
  */
 struct vport_ops {
 	enum ovs_vport_type type;