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authorFelix Fietkau <nbd@openwrt.org>2012-05-06 21:19:14 +0000
committerFelix Fietkau <nbd@openwrt.org>2012-05-06 21:19:14 +0000
commitf20d1938b59d2edb85d5cd6b67176b452e9dff67 (patch)
tree044abda1179e26bc1161e60d5a06a7ff784c9bab /target/linux/generic/files/drivers/net
parentc7667e1b888e04d3696dc01d7874ef484ba502f7 (diff)
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kernel: rewrite the phy packet hook, put it in the network stack to avoid having to keep non-upstream ethernet driver changes
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31637 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/files/drivers/net')
-rw-r--r--target/linux/generic/files/drivers/net/phy/ar8216.c66
-rw-r--r--target/linux/generic/files/drivers/net/phy/mvswitch.c74
2 files changed, 37 insertions, 103 deletions
diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c
index da83a50a94..7a38d1f1be 100644
--- a/target/linux/generic/files/drivers/net/phy/ar8216.c
+++ b/target/linux/generic/files/drivers/net/phy/ar8216.c
@@ -221,8 +221,8 @@ ar8216_read_port_link(struct ar8216_priv *priv, int port,
}
}
-static int
-ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev)
+static struct sk_buff *
+ar8216_mangle_tx(struct net_device *dev, struct sk_buff *skb)
{
struct ar8216_priv *priv = dev->phy_ptr;
unsigned char *buf;
@@ -243,32 +243,27 @@ ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev)
buf[1] = 0x80;
send:
- return priv->ndo_old->ndo_start_xmit(skb, dev);
+ return skb;
error:
dev_kfree_skb_any(skb);
- return 0;
+ return NULL;
}
-static int
-ar8216_mangle_rx(struct sk_buff *skb, int napi)
+static void
+ar8216_mangle_rx(struct net_device *dev, struct sk_buff *skb)
{
struct ar8216_priv *priv;
- struct net_device *dev;
unsigned char *buf;
int port, vlan;
- dev = skb->dev;
- if (!dev)
- goto error;
-
priv = dev->phy_ptr;
if (!priv)
- goto error;
+ return;
/* don't strip the header if vlan mode is disabled */
if (!priv->vlan)
- goto recv;
+ return;
/* strip header, get vlan id */
buf = skb->data;
@@ -276,13 +271,13 @@ ar8216_mangle_rx(struct sk_buff *skb, int napi)
/* check for vlan header presence */
if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00))
- goto recv;
+ return;
port = buf[0] & 0xf;
/* no need to fix up packets coming from a tagged source */
if (priv->vlan_tagged & (1 << port))
- goto recv;
+ return;
/* lookup port vid from local table, the switch passes an invalid vlan id */
vlan = priv->vlan_id[priv->pvid[port]];
@@ -290,31 +285,6 @@ ar8216_mangle_rx(struct sk_buff *skb, int napi)
buf[14 + 2] &= 0xf0;
buf[14 + 2] |= vlan >> 8;
buf[15 + 2] = vlan & 0xff;
-
-recv:
- skb->protocol = eth_type_trans(skb, skb->dev);
-
- if (napi)
- return netif_receive_skb(skb);
- else
- return netif_rx(skb);
-
-error:
- /* no vlan? eat the packet! */
- dev_kfree_skb_any(skb);
- return NET_RX_DROP;
-}
-
-static int
-ar8216_netif_rx(struct sk_buff *skb)
-{
- return ar8216_mangle_rx(skb, 0);
-}
-
-static int
-ar8216_netif_receive_skb(struct sk_buff *skb)
-{
- return ar8216_mangle_rx(skb, 1);
}
static int
@@ -1356,13 +1326,9 @@ ar8216_config_init(struct phy_device *pdev)
/* VID fixup only needed on ar8216 */
if (pdev->addr == 0 && priv->chip_type == AR8216) {
- pdev->pkt_align = 2;
- pdev->netif_receive_skb = ar8216_netif_receive_skb;
- pdev->netif_rx = ar8216_netif_rx;
- priv->ndo_old = dev->netdev_ops;
- memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops));
- priv->ndo.ndo_start_xmit = ar8216_mangle_tx;
- dev->netdev_ops = &priv->ndo;
+ dev->priv_flags |= IFF_NO_IP_ALIGN;
+ dev->eth_mangle_rx = ar8216_mangle_rx;
+ dev->eth_mangle_tx = ar8216_mangle_tx;
}
priv->init = false;
@@ -1443,8 +1409,10 @@ ar8216_remove(struct phy_device *pdev)
if (!priv)
return;
- if (priv->ndo_old && dev)
- dev->netdev_ops = priv->ndo_old;
+ dev->priv_flags &= ~IFF_NO_IP_ALIGN;
+ dev->eth_mangle_rx = NULL;
+ dev->eth_mangle_tx = NULL;
+
if (pdev->addr == 0)
unregister_switch(&priv->dev);
kfree(priv);
diff --git a/target/linux/generic/files/drivers/net/phy/mvswitch.c b/target/linux/generic/files/drivers/net/phy/mvswitch.c
index 1324a80a60..d754951aca 100644
--- a/target/linux/generic/files/drivers/net/phy/mvswitch.c
+++ b/target/linux/generic/files/drivers/net/phy/mvswitch.c
@@ -41,8 +41,7 @@ MODULE_LICENSE("GPL");
#define MVSWITCH_MAGIC 0x88E6060
struct mvswitch_priv {
- const struct net_device_ops *ndo_old;
- struct net_device_ops ndo;
+ netdev_features_t orig_features;
u8 vlans[16];
};
@@ -61,8 +60,8 @@ w16(struct phy_device *phydev, int addr, int reg, u16 val)
}
-static int
-mvswitch_mangle_tx(struct sk_buff *skb, struct net_device *dev)
+static struct sk_buff *
+mvswitch_mangle_tx(struct net_device *dev, struct sk_buff *skb)
{
struct mvswitch_priv *priv;
char *buf = NULL;
@@ -132,7 +131,7 @@ mvswitch_mangle_tx(struct sk_buff *skb, struct net_device *dev)
));
#endif
- return priv->ndo_old->ndo_start_xmit(skb, dev);
+ return skb;
error_expand:
if (net_ratelimit())
@@ -141,25 +140,20 @@ error_expand:
error:
/* any errors? drop the packet! */
dev_kfree_skb_any(skb);
- return 0;
+ return NULL;
}
-static int
-mvswitch_mangle_rx(struct sk_buff *skb, int napi)
+static void
+mvswitch_mangle_rx(struct net_device *dev, struct sk_buff *skb)
{
struct mvswitch_priv *priv;
- struct net_device *dev;
- int vlan = -1;
unsigned char *buf;
+ int vlan = -1;
int i;
- dev = skb->dev;
- if (!dev)
- goto error;
-
priv = dev->phy_ptr;
- if (!priv)
- goto error;
+ if (WARN_ON_ONCE(!priv))
+ return;
#ifdef HEADER_MODE
buf = skb->data;
@@ -167,7 +161,7 @@ mvswitch_mangle_rx(struct sk_buff *skb, int napi)
#else
buf = skb->data + skb->len - MV_TRAILER_SIZE;
if (buf[0] != 0x80)
- goto error;
+ return;
#endif
/* look for the vlan matching the incoming port */
@@ -177,33 +171,9 @@ mvswitch_mangle_rx(struct sk_buff *skb, int napi)
}
if (vlan == -1)
- goto error;
-
- skb->protocol = eth_type_trans(skb, skb->dev);
+ return;
__vlan_hwaccel_put_tag(skb, vlan);
- if (napi)
- return netif_receive_skb(skb);
- else
- return netif_rx(skb);
-
-error:
- /* no vlan? eat the packet! */
- dev_kfree_skb_any(skb);
- return 0;
-}
-
-
-static int
-mvswitch_netif_rx(struct sk_buff *skb)
-{
- return mvswitch_mangle_rx(skb, 0);
-}
-
-static int
-mvswitch_netif_receive_skb(struct sk_buff *skb)
-{
- return mvswitch_mangle_rx(skb, 1);
}
@@ -331,16 +301,12 @@ mvswitch_config_init(struct phy_device *pdev)
MV_SWITCHCTL_DROP
);
- /* hook into the tx function */
- priv->ndo_old = dev->netdev_ops;
- memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops));
- priv->ndo.ndo_start_xmit = mvswitch_mangle_tx;
- dev->netdev_ops = &priv->ndo;
+ dev->eth_mangle_rx = mvswitch_mangle_rx;
+ dev->eth_mangle_tx = mvswitch_mangle_tx;
+ priv->orig_features = dev->features;
- pdev->pkt_align = 2;
- pdev->netif_receive_skb = mvswitch_netif_receive_skb;
- pdev->netif_rx = mvswitch_netif_rx;
#ifdef HEADER_MODE
+ dev->priv_flags |= IFF_NO_IP_ALIGN;
dev->features |= NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX;
#else
dev->features |= NETIF_F_HW_VLAN_RX;
@@ -387,11 +353,11 @@ mvswitch_remove(struct phy_device *pdev)
struct mvswitch_priv *priv = to_mvsw(pdev);
struct net_device *dev = pdev->attached_dev;
- /* restore old netdev ops */
- if (priv->ndo_old && dev)
- dev->netdev_ops = priv->ndo_old;
dev->phy_ptr = NULL;
- dev->features &= ~NETIF_F_HW_VLAN_RX;
+ dev->eth_mangle_rx = NULL;
+ dev->eth_mangle_tx = NULL;
+ dev->features = priv->orig_features;
+ dev->priv_flags &= ~IFF_NO_IP_ALIGN;
kfree(priv);
}