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 | ||
0641e4fb | 14 | if (skb_bond_should_drop(skb, ACCESS_ONCE(skb->dev->master))) |
597a264b | 15 | skb->deliver_no_wcard = 1; |
7750f403 | 16 | |
1f3c8804 | 17 | skb->skb_iif = skb->dev->ifindex; |
b93ab837 | 18 | __vlan_hwaccel_put_tag(skb, vlan_tci); |
e1c096e2 HX |
19 | skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK); |
20 | ||
21 | if (!skb->dev) | |
22 | goto drop; | |
9b22ea56 PM |
23 | |
24 | return (polling ? netif_receive_skb(skb) : netif_rx(skb)); | |
e1c096e2 HX |
25 | |
26 | drop: | |
27 | dev_kfree_skb_any(skb); | |
28 | return NET_RX_DROP; | |
9b22ea56 PM |
29 | } |
30 | EXPORT_SYMBOL(__vlan_hwaccel_rx); | |
31 | ||
32 | int vlan_hwaccel_do_receive(struct sk_buff *skb) | |
33 | { | |
e1c096e2 | 34 | struct net_device *dev = skb->dev; |
9793241f | 35 | struct vlan_rx_stats *rx_stats; |
9b22ea56 | 36 | |
e1c096e2 | 37 | skb->dev = vlan_dev_info(dev)->real_dev; |
bc1d0411 PM |
38 | netif_nit_deliver(skb); |
39 | ||
9b22ea56 PM |
40 | skb->dev = dev; |
41 | skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci); | |
bc1d0411 | 42 | skb->vlan_tci = 0; |
7750f403 | 43 | |
9793241f ED |
44 | rx_stats = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, |
45 | smp_processor_id()); | |
46 | ||
47 | rx_stats->rx_packets++; | |
48 | rx_stats->rx_bytes += skb->len; | |
7750f403 | 49 | |
7750f403 PM |
50 | switch (skb->pkt_type) { |
51 | case PACKET_BROADCAST: | |
52 | break; | |
53 | case PACKET_MULTICAST: | |
9793241f | 54 | rx_stats->multicast++; |
7750f403 PM |
55 | break; |
56 | case PACKET_OTHERHOST: | |
57 | /* Our lower layer thinks this is not local, let's make sure. | |
58 | * This allows the VLAN to have a different MAC than the | |
59 | * underlying device, and still route correctly. */ | |
60 | if (!compare_ether_addr(eth_hdr(skb)->h_dest, | |
9b22ea56 | 61 | dev->dev_addr)) |
7750f403 PM |
62 | skb->pkt_type = PACKET_HOST; |
63 | break; | |
ccbd6a5a | 64 | } |
9b22ea56 | 65 | return 0; |
7750f403 | 66 | } |
22d1ba74 PM |
67 | |
68 | struct net_device *vlan_dev_real_dev(const struct net_device *dev) | |
69 | { | |
70 | return vlan_dev_info(dev)->real_dev; | |
71 | } | |
116cb428 | 72 | EXPORT_SYMBOL(vlan_dev_real_dev); |
22d1ba74 PM |
73 | |
74 | u16 vlan_dev_vlan_id(const struct net_device *dev) | |
75 | { | |
76 | return vlan_dev_info(dev)->vlan_id; | |
77 | } | |
116cb428 | 78 | EXPORT_SYMBOL(vlan_dev_vlan_id); |
e1c096e2 | 79 | |
5b252f0c BH |
80 | static gro_result_t |
81 | vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp, | |
82 | unsigned int vlan_tci, struct sk_buff *skb) | |
e1c096e2 HX |
83 | { |
84 | struct sk_buff *p; | |
85 | ||
0641e4fb | 86 | if (skb_bond_should_drop(skb, ACCESS_ONCE(skb->dev->master))) |
597a264b | 87 | skb->deliver_no_wcard = 1; |
e1c096e2 | 88 | |
1f3c8804 | 89 | skb->skb_iif = skb->dev->ifindex; |
b93ab837 | 90 | __vlan_hwaccel_put_tag(skb, vlan_tci); |
e1c096e2 HX |
91 | skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK); |
92 | ||
93 | if (!skb->dev) | |
94 | goto drop; | |
95 | ||
96 | for (p = napi->gro_list; p; p = p->next) { | |
aa4b9f53 HX |
97 | NAPI_GRO_CB(p)->same_flow = |
98 | p->dev == skb->dev && !compare_ether_header( | |
99 | skb_mac_header(p), skb_gro_mac_header(skb)); | |
e1c096e2 HX |
100 | NAPI_GRO_CB(p)->flush = 0; |
101 | } | |
102 | ||
103 | return dev_gro_receive(napi, skb); | |
104 | ||
105 | drop: | |
d1c76af9 | 106 | return GRO_DROP; |
e1c096e2 HX |
107 | } |
108 | ||
c7c4b3b6 BH |
109 | gro_result_t vlan_gro_receive(struct napi_struct *napi, struct vlan_group *grp, |
110 | unsigned int vlan_tci, struct sk_buff *skb) | |
e1c096e2 | 111 | { |
2ffb4558 | 112 | if (netpoll_rx_on(skb)) |
c7c4b3b6 BH |
113 | return vlan_hwaccel_receive_skb(skb, grp, vlan_tci) |
114 | ? GRO_DROP : GRO_NORMAL; | |
2ffb4558 | 115 | |
86911732 HX |
116 | skb_gro_reset_offset(skb); |
117 | ||
5d0d9be8 | 118 | return napi_skb_finish(vlan_gro_common(napi, grp, vlan_tci, skb), skb); |
e1c096e2 HX |
119 | } |
120 | EXPORT_SYMBOL(vlan_gro_receive); | |
121 | ||
c7c4b3b6 BH |
122 | gro_result_t vlan_gro_frags(struct napi_struct *napi, struct vlan_group *grp, |
123 | unsigned int vlan_tci) | |
e1c096e2 | 124 | { |
76620aaf | 125 | struct sk_buff *skb = napi_frags_skb(napi); |
e1c096e2 HX |
126 | |
127 | if (!skb) | |
c7c4b3b6 | 128 | return GRO_DROP; |
e1c096e2 | 129 | |
1db9e29b HX |
130 | if (netpoll_rx_on(skb)) { |
131 | skb->protocol = eth_type_trans(skb, skb->dev); | |
c7c4b3b6 BH |
132 | return vlan_hwaccel_receive_skb(skb, grp, vlan_tci) |
133 | ? GRO_DROP : GRO_NORMAL; | |
1db9e29b | 134 | } |
2ffb4558 | 135 | |
5d0d9be8 HX |
136 | return napi_frags_finish(napi, skb, |
137 | vlan_gro_common(napi, grp, vlan_tci, skb)); | |
e1c096e2 HX |
138 | } |
139 | EXPORT_SYMBOL(vlan_gro_frags); |