49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/if_vlan.h>
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#include "vlan.h"
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/* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */
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int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
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unsigned short vlan_tag, int polling)
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{
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struct net_device_stats *stats;
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if (skb_bond_should_drop(skb)) {
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dev_kfree_skb_any(skb);
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return NET_RX_DROP;
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}
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skb->dev = vlan_group_get_device(grp, vlan_tag & VLAN_VID_MASK);
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if (skb->dev == NULL) {
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dev_kfree_skb_any(skb);
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/* Not NET_RX_DROP, this is not being dropped
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* due to congestion. */
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return NET_RX_SUCCESS;
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}
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skb->dev->last_rx = jiffies;
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stats = &skb->dev->stats;
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stats->rx_packets++;
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stats->rx_bytes += skb->len;
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skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tag);
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switch (skb->pkt_type) {
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case PACKET_BROADCAST:
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break;
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case PACKET_MULTICAST:
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stats->multicast++;
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break;
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case PACKET_OTHERHOST:
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/* Our lower layer thinks this is not local, let's make sure.
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* This allows the VLAN to have a different MAC than the
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* underlying device, and still route correctly. */
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if (!compare_ether_addr(eth_hdr(skb)->h_dest,
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skb->dev->dev_addr))
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skb->pkt_type = PACKET_HOST;
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break;
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};
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return (polling ? netif_receive_skb(skb) : netif_rx(skb));
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}
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EXPORT_SYMBOL(__vlan_hwaccel_rx);
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