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authorFlorian Fainelli <f.fainelli@gmail.com>2017-04-08 08:55:23 -0700
committerDavid S. Miller <davem@davemloft.net>2017-04-08 13:49:36 -0700
commita86d8becc3f04a5e350b5a17530e6a01495c00a5 (patch)
tree93e0c28cdfcac7bb616f9b767c4a782a2e620bce
parent16c5dcb13a371feae0e680e6518775b5335b37d8 (diff)
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>
-rw-r--r--include/net/dsa.h2
-rw-r--r--net/dsa/dsa.c20
-rw-r--r--net/dsa/dsa_priv.h5
-rw-r--r--net/dsa/tag_brcm.c18
-rw-r--r--net/dsa/tag_dsa.c18
-rw-r--r--net/dsa/tag_edsa.c18
-rw-r--r--net/dsa/tag_mtk.c20
-rw-r--r--net/dsa/tag_qca.c18
-rw-r--r--net/dsa/tag_trailer.c18
9 files changed, 53 insertions, 84 deletions
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 7ba9b1fb565c..9b1c1eb4147a 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -124,7 +124,7 @@ struct dsa_switch_tree {
* protocol to use.
*/
struct net_device *master_netdev;
- int (*rcv)(struct sk_buff *skb,
+ struct sk_buff * (*rcv)(struct sk_buff *skb,
struct net_device *dev,
struct packet_type *pt,
struct net_device *orig_dev);
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index d370c8bfa372..1fb9cf7aaaf4 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 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
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 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
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 = {
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 2a3139921811..107138a55bd8 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -17,8 +17,9 @@
struct dsa_device_ops {
struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
- int (*rcv)(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev);
+ struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev);
};
struct dsa_slave_priv {
diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c
index 263941769c88..2a9b52c5af86 100644
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -92,8 +92,9 @@ out_free:
return NULL;
}
-static int brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev)
+static struct sk_buff *brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev)
{
struct dsa_switch_tree *dst = dev->dsa_ptr;
struct dsa_switch *ds;
@@ -133,21 +134,12 @@ static int brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev,
skb->data - ETH_HLEN - BRCM_TAG_LEN,
2 * ETH_ALEN);
- skb_push(skb, ETH_HLEN);
- skb->pkt_type = PACKET_HOST;
skb->dev = ds->ports[source_port].netdev;
- 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;
+ return skb;
out_drop:
- kfree_skb(skb);
- return 0;
+ return NULL;
}
const struct dsa_device_ops brcm_netdev_ops = {
diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c
index b7032699eaad..1c6633f0de01 100644
--- a/net/dsa/tag_dsa.c
+++ b/net/dsa/tag_dsa.c
@@ -68,8 +68,9 @@ out_free:
return NULL;
}
-static int dsa_rcv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev)
+static struct sk_buff *dsa_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev)
{
struct dsa_switch_tree *dst = dev->dsa_ptr;
struct dsa_switch *ds;
@@ -158,20 +159,11 @@ static int dsa_rcv(struct sk_buff *skb, struct net_device *dev,
}
skb->dev = ds->ports[source_port].netdev;
- 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;
+ return skb;
out_drop:
- kfree_skb(skb);
- return 0;
+ return NULL;
}
const struct dsa_device_ops dsa_netdev_ops = {
diff --git a/net/dsa/tag_edsa.c b/net/dsa/tag_edsa.c
index b87009672b40..d9c668aa5e54 100644
--- a/net/dsa/tag_edsa.c
+++ b/net/dsa/tag_edsa.c
@@ -81,8 +81,9 @@ out_free:
return NULL;
}
-static int edsa_rcv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev)
+static struct sk_buff *edsa_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev)
{
struct dsa_switch_tree *dst = dev->dsa_ptr;
struct dsa_switch *ds;
@@ -177,20 +178,11 @@ static int edsa_rcv(struct sk_buff *skb, struct net_device *dev,
}
skb->dev = ds->ports[source_port].netdev;
- 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;
+ return skb;
out_drop:
- kfree_skb(skb);
- return 0;
+ return NULL;
}
const struct dsa_device_ops edsa_netdev_ops = {
diff --git a/net/dsa/tag_mtk.c b/net/dsa/tag_mtk.c
index d0a477084870..837cdddb53f0 100644
--- a/net/dsa/tag_mtk.c
+++ b/net/dsa/tag_mtk.c
@@ -47,8 +47,9 @@ out_free:
return NULL;
}
-static int mtk_tag_rcv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev)
+static struct sk_buff *mtk_tag_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev)
{
struct dsa_switch_tree *dst = dev->dsa_ptr;
struct dsa_switch *ds;
@@ -85,23 +86,12 @@ static int mtk_tag_rcv(struct sk_buff *skb, struct net_device *dev,
if (!ds->ports[port].netdev)
goto out_drop;
- /* Update skb & forward the frame accordingly */
- skb_push(skb, ETH_HLEN);
-
- skb->pkt_type = PACKET_HOST;
skb->dev = ds->ports[port].netdev;
- 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;
+ return skb;
out_drop:
- kfree_skb(skb);
- return 0;
+ return NULL;
}
const struct dsa_device_ops mtk_netdev_ops = {
diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c
index d1324649808c..3ba3f59f7a34 100644
--- a/net/dsa/tag_qca.c
+++ b/net/dsa/tag_qca.c
@@ -66,8 +66,9 @@ out_free:
return NULL;
}
-static int qca_tag_rcv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev)
+static struct sk_buff *qca_tag_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev)
{
struct dsa_switch_tree *dst = dev->dsa_ptr;
struct dsa_switch *ds;
@@ -108,21 +109,12 @@ static int qca_tag_rcv(struct sk_buff *skb, struct net_device *dev,
goto out_drop;
/* Update skb & forward the frame accordingly */
- skb_push(skb, ETH_HLEN);
- skb->pkt_type = PACKET_HOST;
skb->dev = ds->ports[port].netdev;
- 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;
+ return skb;
out_drop:
- kfree_skb(skb);
- return 0;
+ return NULL;
}
const struct dsa_device_ops qca_netdev_ops = {
diff --git a/net/dsa/tag_trailer.c b/net/dsa/tag_trailer.c
index 1fc0b221a70f..aafc2fc74c30 100644
--- a/net/dsa/tag_trailer.c
+++ b/net/dsa/tag_trailer.c
@@ -58,8 +58,9 @@ static struct sk_buff *trailer_xmit(struct sk_buff *skb, struct net_device *dev)
return nskb;
}
-static int trailer_rcv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev)
+static struct sk_buff *trailer_rcv(struct sk_buff *skb, struct net_device *dev,
+ struct packet_type *pt,
+ struct net_device *orig_dev)
{
struct dsa_switch_tree *dst = dev->dsa_ptr;
struct dsa_switch *ds;
@@ -83,20 +84,11 @@ static int trailer_rcv(struct sk_buff *skb, struct net_device *dev,
pskb_trim_rcsum(skb, skb->len - 4);
skb->dev = ds->ports[source_port].netdev;
- 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;
+ return skb;
out_drop:
- kfree_skb(skb);
- return 0;
+ return NULL;
}
const struct dsa_device_ops trailer_netdev_ops = {