mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 22:53:55 +08:00
83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
#include <linux/skbuff.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_vlan.h>
|
|
#include "vlan.h"
|
|
|
|
struct vlan_hwaccel_cb {
|
|
struct net_device *dev;
|
|
};
|
|
|
|
static inline struct vlan_hwaccel_cb *vlan_hwaccel_cb(struct sk_buff *skb)
|
|
{
|
|
return (struct vlan_hwaccel_cb *)skb->cb;
|
|
}
|
|
|
|
/* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */
|
|
int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
|
|
u16 vlan_tci, int polling)
|
|
{
|
|
struct vlan_hwaccel_cb *cb = vlan_hwaccel_cb(skb);
|
|
|
|
if (skb_bond_should_drop(skb)) {
|
|
dev_kfree_skb_any(skb);
|
|
return NET_RX_DROP;
|
|
}
|
|
|
|
skb->vlan_tci = vlan_tci;
|
|
cb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
|
|
|
|
return (polling ? netif_receive_skb(skb) : netif_rx(skb));
|
|
}
|
|
EXPORT_SYMBOL(__vlan_hwaccel_rx);
|
|
|
|
int vlan_hwaccel_do_receive(struct sk_buff *skb)
|
|
{
|
|
struct vlan_hwaccel_cb *cb = vlan_hwaccel_cb(skb);
|
|
struct net_device *dev = cb->dev;
|
|
struct net_device_stats *stats;
|
|
|
|
netif_nit_deliver(skb);
|
|
|
|
if (dev == NULL) {
|
|
kfree_skb(skb);
|
|
return -1;
|
|
}
|
|
|
|
skb->dev = dev;
|
|
skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci);
|
|
skb->vlan_tci = 0;
|
|
|
|
stats = &dev->stats;
|
|
stats->rx_packets++;
|
|
stats->rx_bytes += skb->len;
|
|
|
|
switch (skb->pkt_type) {
|
|
case PACKET_BROADCAST:
|
|
break;
|
|
case PACKET_MULTICAST:
|
|
stats->multicast++;
|
|
break;
|
|
case PACKET_OTHERHOST:
|
|
/* Our lower layer thinks this is not local, let's make sure.
|
|
* This allows the VLAN to have a different MAC than the
|
|
* underlying device, and still route correctly. */
|
|
if (!compare_ether_addr(eth_hdr(skb)->h_dest,
|
|
dev->dev_addr))
|
|
skb->pkt_type = PACKET_HOST;
|
|
break;
|
|
};
|
|
return 0;
|
|
}
|
|
|
|
struct net_device *vlan_dev_real_dev(const struct net_device *dev)
|
|
{
|
|
return vlan_dev_info(dev)->real_dev;
|
|
}
|
|
EXPORT_SYMBOL_GPL(vlan_dev_real_dev);
|
|
|
|
u16 vlan_dev_vlan_id(const struct net_device *dev)
|
|
{
|
|
return vlan_dev_info(dev)->vlan_id;
|
|
}
|
|
EXPORT_SYMBOL_GPL(vlan_dev_vlan_id);
|