Commit | Line | Data |
---|---|---|
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 | ||
7 | /* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */ | |
8 | int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp, | |
9bb8582e | 9 | u16 vlan_tci, int polling) |
7750f403 | 10 | { |
4ead4431 HX |
11 | if (netpoll_rx(skb)) |
12 | return NET_RX_DROP; | |
13 | ||
e1c096e2 HX |
14 | if (skb_bond_should_drop(skb)) |
15 | goto drop; | |
7750f403 | 16 | |
b93ab837 | 17 | __vlan_hwaccel_put_tag(skb, vlan_tci); |
e1c096e2 HX |
18 | skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK); |
19 | ||
20 | if (!skb->dev) | |
21 | goto drop; | |
9b22ea56 PM |
22 | |
23 | return (polling ? netif_receive_skb(skb) : netif_rx(skb)); | |
e1c096e2 HX |
24 | |
25 | drop: | |
26 | dev_kfree_skb_any(skb); | |
27 | return NET_RX_DROP; | |
9b22ea56 PM |
28 | } |
29 | EXPORT_SYMBOL(__vlan_hwaccel_rx); | |
30 | ||
31 | int vlan_hwaccel_do_receive(struct sk_buff *skb) | |
32 | { | |
e1c096e2 | 33 | struct net_device *dev = skb->dev; |
9793241f | 34 | struct vlan_rx_stats *rx_stats; |
9b22ea56 | 35 | |
e1c096e2 | 36 | skb->dev = vlan_dev_info(dev)->real_dev; |
bc1d0411 PM |
37 | netif_nit_deliver(skb); |
38 | ||
9b22ea56 PM |
39 | skb->dev = dev; |
40 | skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci); | |
bc1d0411 | 41 | skb->vlan_tci = 0; |
7750f403 | 42 | |
9793241f ED |
43 | rx_stats = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, |
44 | smp_processor_id()); | |
45 | ||
46 | rx_stats->rx_packets++; | |
47 | rx_stats->rx_bytes += skb->len; | |
7750f403 | 48 | |
7750f403 PM |
49 | switch (skb->pkt_type) { |
50 | case PACKET_BROADCAST: | |
51 | break; | |
52 | case PACKET_MULTICAST: | |
9793241f | 53 | rx_stats->multicast++; |
7750f403 PM |
54 | break; |
55 | case PACKET_OTHERHOST: | |
56 | /* Our lower layer thinks this is not local, let's make sure. | |
57 | * This allows the VLAN to have a different MAC than the | |
58 | * underlying device, and still route correctly. */ | |
59 | if (!compare_ether_addr(eth_hdr(skb)->h_dest, | |
9b22ea56 | 60 | dev->dev_addr)) |
7750f403 PM |
61 | skb->pkt_type = PACKET_HOST; |
62 | break; | |
63 | }; | |
9b22ea56 | 64 | return 0; |
7750f403 | 65 | } |
22d1ba74 PM |
66 | |
67 | struct net_device *vlan_dev_real_dev(const struct net_device *dev) | |
68 | { | |
69 | return vlan_dev_info(dev)->real_dev; | |
70 | } | |
116cb428 | 71 | EXPORT_SYMBOL(vlan_dev_real_dev); |
22d1ba74 PM |
72 | |
73 | u16 vlan_dev_vlan_id(const struct net_device *dev) | |
74 | { | |
75 | return vlan_dev_info(dev)->vlan_id; | |
76 | } | |
116cb428 | 77 | EXPORT_SYMBOL(vlan_dev_vlan_id); |
e1c096e2 | 78 | |
5b252f0c BH |
79 | static gro_result_t |
80 | vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp, | |
81 | unsigned int vlan_tci, struct sk_buff *skb) | |
e1c096e2 HX |
82 | { |
83 | struct sk_buff *p; | |
84 | ||
85 | if (skb_bond_should_drop(skb)) | |
86 | goto drop; | |
87 | ||
b93ab837 | 88 | __vlan_hwaccel_put_tag(skb, vlan_tci); |
e1c096e2 HX |
89 | skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK); |
90 | ||
91 | if (!skb->dev) | |
92 | goto drop; | |
93 | ||
94 | for (p = napi->gro_list; p; p = p->next) { | |
aa4b9f53 HX |
95 | NAPI_GRO_CB(p)->same_flow = |
96 | p->dev == skb->dev && !compare_ether_header( | |
97 | skb_mac_header(p), skb_gro_mac_header(skb)); | |
e1c096e2 HX |
98 | NAPI_GRO_CB(p)->flush = 0; |
99 | } | |
100 | ||
101 | return dev_gro_receive(napi, skb); | |
102 | ||
103 | drop: | |
d1c76af9 | 104 | return GRO_DROP; |
e1c096e2 HX |
105 | } |
106 | ||
c7c4b3b6 BH |
107 | gro_result_t vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp, |
108 | unsigned int vlan_tci, struct sk_buff *skb) | |
e1c096e2 | 109 | { |
2ffb4558 | 110 | if (netpoll_rx_on(skb)) |
c7c4b3b6 BH |
111 | return vlan_hwaccel_receive_skb(skb, grp, vlan_tci) |
112 | ? GRO_DROP : GRO_NORMAL; | |
2ffb4558 | 113 | |
86911732 HX |
114 | skb_gro_reset_offset(skb); |
115 | ||
5d0d9be8 | 116 | return napi_skb_finish(vlan_gro_common(napi, grp, vlan_tci, skb), skb); |
e1c096e2 HX |
117 | } |
118 | EXPORT_SYMBOL(vlan_gro_receive); | |
119 | ||
c7c4b3b6 BH |
120 | gro_result_t vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp, |
121 | unsigned int vlan_tci) | |
e1c096e2 | 122 | { |
76620aaf | 123 | struct sk_buff *skb = napi_frags_skb(napi); |
e1c096e2 HX |
124 | |
125 | if (!skb) | |
c7c4b3b6 | 126 | return GRO_DROP; |
e1c096e2 | 127 | |
1db9e29b HX |
128 | if (netpoll_rx_on(skb)) { |
129 | skb->protocol = eth_type_trans(skb, skb->dev); | |
c7c4b3b6 BH |
130 | return vlan_hwaccel_receive_skb(skb, grp, vlan_tci) |
131 | ? GRO_DROP : GRO_NORMAL; | |
1db9e29b | 132 | } |
2ffb4558 | 133 | |
5d0d9be8 HX |
134 | return napi_frags_finish(napi, skb, |
135 | vlan_gro_common(napi, grp, vlan_tci, skb)); | |
e1c096e2 HX |
136 | } |
137 | EXPORT_SYMBOL(vlan_gro_frags); |