net: dsa: Factor bottom tag receive functions
All DSA tag receive functions do strictly the same thing after they have located
the originating source port from their tag specific protocol:
- push ETH_HLEN bytes
- set pkt_type to PACKET_HOST
- call eth_type_trans()
- bump up counters
- call netif_receive_skb()
Factor all of that into dsa_switch_rcv(). This also makes us return a pointer to
a sk_buff, which makes us symetric with the xmit function.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index d370c8b..1fb9cf7 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -23,6 +23,7 @@
#include <linux/sysfs.h>
#include <linux/phy_fixed.h>
#include <linux/gpio/consumer.h>
+#include <linux/etherdevice.h>
#include <net/dsa.h>
#include "dsa_priv.h"
@@ -900,6 +901,7 @@
struct packet_type *pt, struct net_device *orig_dev)
{
struct dsa_switch_tree *dst = dev->dsa_ptr;
+ struct sk_buff *nskb = NULL;
if (unlikely(dst == NULL)) {
kfree_skb(skb);
@@ -910,7 +912,23 @@
if (!skb)
return 0;
- return dst->rcv(skb, dev, pt, orig_dev);
+ nskb = dst->rcv(skb, dev, pt, orig_dev);
+ if (!nskb) {
+ kfree_skb(skb);
+ return 0;
+ }
+
+ skb = nskb;
+ skb_push(skb, ETH_HLEN);
+ skb->pkt_type = PACKET_HOST;
+ skb->protocol = eth_type_trans(skb, skb->dev);
+
+ skb->dev->stats.rx_packets++;
+ skb->dev->stats.rx_bytes += skb->len;
+
+ netif_receive_skb(skb);
+
+ return 0;
}
static struct packet_type dsa_pack_type __read_mostly = {