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> | |
4 | #include "vlan.h" | |
5 | ||
6 | /* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */ | |
7 | int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp, | |
9bb8582e | 8 | u16 vlan_tci, int polling) |
7750f403 | 9 | { |
e1c096e2 HX |
10 | if (skb_bond_should_drop(skb)) |
11 | goto drop; | |
7750f403 | 12 | |
bc1d0411 | 13 | skb->vlan_tci = vlan_tci; |
e1c096e2 HX |
14 | skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK); |
15 | ||
16 | if (!skb->dev) | |
17 | goto drop; | |
9b22ea56 PM |
18 | |
19 | return (polling ? netif_receive_skb(skb) : netif_rx(skb)); | |
e1c096e2 HX |
20 | |
21 | drop: | |
22 | dev_kfree_skb_any(skb); | |
23 | return NET_RX_DROP; | |
9b22ea56 PM |
24 | } |
25 | EXPORT_SYMBOL(__vlan_hwaccel_rx); | |
26 | ||
27 | int vlan_hwaccel_do_receive(struct sk_buff *skb) | |
28 | { | |
e1c096e2 | 29 | struct net_device *dev = skb->dev; |
9b22ea56 PM |
30 | struct net_device_stats *stats; |
31 | ||
e1c096e2 | 32 | skb->dev = vlan_dev_info(dev)->real_dev; |
bc1d0411 PM |
33 | netif_nit_deliver(skb); |
34 | ||
9b22ea56 PM |
35 | skb->dev = dev; |
36 | skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci); | |
bc1d0411 | 37 | skb->vlan_tci = 0; |
7750f403 | 38 | |
9b22ea56 | 39 | stats = &dev->stats; |
7750f403 PM |
40 | stats->rx_packets++; |
41 | stats->rx_bytes += skb->len; | |
42 | ||
7750f403 PM |
43 | switch (skb->pkt_type) { |
44 | case PACKET_BROADCAST: | |
45 | break; | |
46 | case PACKET_MULTICAST: | |
47 | stats->multicast++; | |
48 | break; | |
49 | case PACKET_OTHERHOST: | |
50 | /* Our lower layer thinks this is not local, let's make sure. | |
51 | * This allows the VLAN to have a different MAC than the | |
52 | * underlying device, and still route correctly. */ | |
53 | if (!compare_ether_addr(eth_hdr(skb)->h_dest, | |
9b22ea56 | 54 | dev->dev_addr)) |
7750f403 PM |
55 | skb->pkt_type = PACKET_HOST; |
56 | break; | |
57 | }; | |
9b22ea56 | 58 | return 0; |
7750f403 | 59 | } |
22d1ba74 PM |
60 | |
61 | struct net_device *vlan_dev_real_dev(const struct net_device *dev) | |
62 | { | |
63 | return vlan_dev_info(dev)->real_dev; | |
64 | } | |
116cb428 | 65 | EXPORT_SYMBOL(vlan_dev_real_dev); |
22d1ba74 PM |
66 | |
67 | u16 vlan_dev_vlan_id(const struct net_device *dev) | |
68 | { | |
69 | return vlan_dev_info(dev)->vlan_id; | |
70 | } | |
116cb428 | 71 | EXPORT_SYMBOL(vlan_dev_vlan_id); |
e1c096e2 HX |
72 | |
73 | static int vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp, | |
74 | unsigned int vlan_tci, struct sk_buff *skb) | |
75 | { | |
76 | struct sk_buff *p; | |
77 | ||
78 | if (skb_bond_should_drop(skb)) | |
79 | goto drop; | |
80 | ||
81 | skb->vlan_tci = vlan_tci; | |
82 | skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK); | |
83 | ||
84 | if (!skb->dev) | |
85 | goto drop; | |
86 | ||
87 | for (p = napi->gro_list; p; p = p->next) { | |
aa4b9f53 HX |
88 | NAPI_GRO_CB(p)->same_flow = |
89 | p->dev == skb->dev && !compare_ether_header( | |
90 | skb_mac_header(p), skb_gro_mac_header(skb)); | |
e1c096e2 HX |
91 | NAPI_GRO_CB(p)->flush = 0; |
92 | } | |
93 | ||
94 | return dev_gro_receive(napi, skb); | |
95 | ||
96 | drop: | |
97 | return 2; | |
98 | } | |
99 | ||
100 | int vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp, | |
101 | unsigned int vlan_tci, struct sk_buff *skb) | |
102 | { | |
86911732 HX |
103 | skb_gro_reset_offset(skb); |
104 | ||
5d0d9be8 | 105 | return napi_skb_finish(vlan_gro_common(napi, grp, vlan_tci, skb), skb); |
e1c096e2 HX |
106 | } |
107 | EXPORT_SYMBOL(vlan_gro_receive); | |
108 | ||
109 | int vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp, | |
110 | unsigned int vlan_tci, struct napi_gro_fraginfo *info) | |
111 | { | |
112 | struct sk_buff *skb = napi_fraginfo_skb(napi, info); | |
e1c096e2 HX |
113 | |
114 | if (!skb) | |
5d0d9be8 | 115 | return NET_RX_DROP; |
e1c096e2 | 116 | |
5d0d9be8 HX |
117 | return napi_frags_finish(napi, skb, |
118 | vlan_gro_common(napi, grp, vlan_tci, skb)); | |
e1c096e2 HX |
119 | } |
120 | EXPORT_SYMBOL(vlan_gro_frags); |