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Commit | Line | Data |
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7750f403 PM |
1 | #include <linux/skbuff.h> |
2 | #include <linux/netdevice.h> | |
3 | #include <linux/if_vlan.h> | |
4ead4431 | 4 | #include <linux/netpoll.h> |
7750f403 PM |
5 | #include "vlan.h" |
6 | ||
3701e513 | 7 | bool vlan_hwaccel_do_receive(struct sk_buff **skbp) |
7750f403 | 8 | { |
3701e513 JG |
9 | struct sk_buff *skb = *skbp; |
10 | u16 vlan_id = skb->vlan_tci & VLAN_VID_MASK; | |
ad1afb00 | 11 | struct net_device *vlan_dev; |
3701e513 | 12 | struct vlan_rx_stats *rx_stats; |
7750f403 | 13 | |
3701e513 JG |
14 | vlan_dev = vlan_find_dev(skb->dev, vlan_id); |
15 | if (!vlan_dev) { | |
16 | if (vlan_id) | |
17 | skb->pkt_type = PACKET_OTHERHOST; | |
18 | return false; | |
173e79fb | 19 | } |
9b22ea56 | 20 | |
3701e513 JG |
21 | skb = *skbp = skb_share_check(skb, GFP_ATOMIC); |
22 | if (unlikely(!skb)) | |
23 | return false; | |
e1c096e2 | 24 | |
3701e513 JG |
25 | skb->dev = vlan_dev; |
26 | skb->priority = vlan_get_ingress_priority(vlan_dev, skb->vlan_tci); | |
bc1d0411 | 27 | skb->vlan_tci = 0; |
7750f403 | 28 | |
3701e513 | 29 | rx_stats = this_cpu_ptr(vlan_dev_info(vlan_dev)->vlan_rx_stats); |
9793241f | 30 | |
9618e2ff | 31 | u64_stats_update_begin(&rx_stats->syncp); |
9793241f ED |
32 | rx_stats->rx_packets++; |
33 | rx_stats->rx_bytes += skb->len; | |
7750f403 | 34 | |
7750f403 PM |
35 | switch (skb->pkt_type) { |
36 | case PACKET_BROADCAST: | |
37 | break; | |
38 | case PACKET_MULTICAST: | |
9618e2ff | 39 | rx_stats->rx_multicast++; |
7750f403 PM |
40 | break; |
41 | case PACKET_OTHERHOST: | |
42 | /* Our lower layer thinks this is not local, let's make sure. | |
43 | * This allows the VLAN to have a different MAC than the | |
44 | * underlying device, and still route correctly. */ | |
45 | if (!compare_ether_addr(eth_hdr(skb)->h_dest, | |
3701e513 | 46 | vlan_dev->dev_addr)) |
7750f403 PM |
47 | skb->pkt_type = PACKET_HOST; |
48 | break; | |
ccbd6a5a | 49 | } |
9618e2ff | 50 | u64_stats_update_end(&rx_stats->syncp); |
3701e513 JG |
51 | |
52 | return true; | |
7750f403 | 53 | } |
22d1ba74 PM |
54 | |
55 | struct net_device *vlan_dev_real_dev(const struct net_device *dev) | |
56 | { | |
57 | return vlan_dev_info(dev)->real_dev; | |
58 | } | |
116cb428 | 59 | EXPORT_SYMBOL(vlan_dev_real_dev); |
22d1ba74 PM |
60 | |
61 | u16 vlan_dev_vlan_id(const struct net_device *dev) | |
62 | { | |
63 | return vlan_dev_info(dev)->vlan_id; | |
64 | } | |
116cb428 | 65 | EXPORT_SYMBOL(vlan_dev_vlan_id); |
e1c096e2 | 66 | |
3701e513 JG |
67 | /* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */ |
68 | int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp, | |
69 | u16 vlan_tci, int polling) | |
e1c096e2 | 70 | { |
b93ab837 | 71 | __vlan_hwaccel_put_tag(skb, vlan_tci); |
3701e513 | 72 | return polling ? netif_receive_skb(skb) : netif_rx(skb); |
e1c096e2 | 73 | } |
3701e513 | 74 | EXPORT_SYMBOL(__vlan_hwaccel_rx); |
e1c096e2 | 75 | |
c7c4b3b6 BH |
76 | gro_result_t vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp, |
77 | unsigned int vlan_tci, struct sk_buff *skb) | |
e1c096e2 | 78 | { |
3701e513 JG |
79 | __vlan_hwaccel_put_tag(skb, vlan_tci); |
80 | return napi_gro_receive(napi, skb); | |
e1c096e2 HX |
81 | } |
82 | EXPORT_SYMBOL(vlan_gro_receive); | |
83 | ||
c7c4b3b6 BH |
84 | gro_result_t vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp, |
85 | unsigned int vlan_tci) | |
e1c096e2 | 86 | { |
3701e513 JG |
87 | __vlan_hwaccel_put_tag(napi->skb, vlan_tci); |
88 | return napi_gro_frags(napi); | |
e1c096e2 HX |
89 | } |
90 | EXPORT_SYMBOL(vlan_gro_frags); |