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10#ifndef __IPVLAN_H
11#define __IPVLAN_H
12
13#include <linux/kernel.h>
14#include <linux/types.h>
15#include <linux/module.h>
16#include <linux/init.h>
17#include <linux/rculist.h>
18#include <linux/notifier.h>
19#include <linux/netdevice.h>
20#include <linux/etherdevice.h>
21#include <linux/if_arp.h>
22#include <linux/if_link.h>
23#include <linux/if_vlan.h>
24#include <linux/ip.h>
25#include <linux/inetdevice.h>
26#include <linux/netfilter.h>
27#include <net/ip.h>
28#include <net/ip6_route.h>
29#include <net/netns/generic.h>
30#include <net/rtnetlink.h>
31#include <net/route.h>
32#include <net/addrconf.h>
33#include <net/l3mdev.h>
34
35#define IPVLAN_DRV "ipvlan"
36#define IPV_DRV_VER "0.1"
37
38#define IPVLAN_HASH_SIZE (1 << BITS_PER_BYTE)
39#define IPVLAN_HASH_MASK (IPVLAN_HASH_SIZE - 1)
40
41#define IPVLAN_MAC_FILTER_BITS 8
42#define IPVLAN_MAC_FILTER_SIZE (1 << IPVLAN_MAC_FILTER_BITS)
43#define IPVLAN_MAC_FILTER_MASK (IPVLAN_MAC_FILTER_SIZE - 1)
44
45#define IPVLAN_QBACKLOG_LIMIT 1000
46
47typedef enum {
48 IPVL_IPV6 = 0,
49 IPVL_ICMPV6,
50 IPVL_IPV4,
51 IPVL_ARP,
52} ipvl_hdr_type;
53
54struct ipvl_pcpu_stats {
55 u64 rx_pkts;
56 u64 rx_bytes;
57 u64 rx_mcast;
58 u64 tx_pkts;
59 u64 tx_bytes;
60 struct u64_stats_sync syncp;
61 u32 rx_errs;
62 u32 tx_drps;
63};
64
65struct ipvl_port;
66
67struct ipvl_dev {
68 struct net_device *dev;
69 struct list_head pnode;
70 struct ipvl_port *port;
71 struct net_device *phy_dev;
72 struct list_head addrs;
73 struct ipvl_pcpu_stats __percpu *pcpu_stats;
74 DECLARE_BITMAP(mac_filters, IPVLAN_MAC_FILTER_SIZE);
75 netdev_features_t sfeatures;
76 u32 msg_enable;
77};
78
79struct ipvl_addr {
80 struct ipvl_dev *master;
81 union {
82 struct in6_addr ip6;
83 struct in_addr ip4;
84 } ipu;
85#define ip6addr ipu.ip6
86#define ip4addr ipu.ip4
87 struct hlist_node hlnode;
88 struct list_head anode;
89 ipvl_hdr_type atype;
90 struct rcu_head rcu;
91};
92
93struct ipvl_port {
94 struct net_device *dev;
95 possible_net_t pnet;
96 struct hlist_head hlhead[IPVLAN_HASH_SIZE];
97 struct list_head ipvlans;
98 u16 mode;
99 u16 flags;
100 u16 dev_id_start;
101 struct work_struct wq;
102 struct sk_buff_head backlog;
103 int count;
104 struct ida ida;
105};
106
107struct ipvl_skb_cb {
108 bool tx_pkt;
109};
110#define IPVL_SKB_CB(_skb) ((struct ipvl_skb_cb *)&((_skb)->cb[0]))
111
112static inline struct ipvl_port *ipvlan_port_get_rcu(const struct net_device *d)
113{
114 return rcu_dereference(d->rx_handler_data);
115}
116
117static inline struct ipvl_port *ipvlan_port_get_rcu_bh(const struct net_device *d)
118{
119 return rcu_dereference_bh(d->rx_handler_data);
120}
121
122static inline struct ipvl_port *ipvlan_port_get_rtnl(const struct net_device *d)
123{
124 return rtnl_dereference(d->rx_handler_data);
125}
126
127static inline bool ipvlan_is_private(const struct ipvl_port *port)
128{
129 return !!(port->flags & IPVLAN_F_PRIVATE);
130}
131
132static inline void ipvlan_mark_private(struct ipvl_port *port)
133{
134 port->flags |= IPVLAN_F_PRIVATE;
135}
136
137static inline void ipvlan_clear_private(struct ipvl_port *port)
138{
139 port->flags &= ~IPVLAN_F_PRIVATE;
140}
141
142static inline bool ipvlan_is_vepa(const struct ipvl_port *port)
143{
144 return !!(port->flags & IPVLAN_F_VEPA);
145}
146
147static inline void ipvlan_mark_vepa(struct ipvl_port *port)
148{
149 port->flags |= IPVLAN_F_VEPA;
150}
151
152static inline void ipvlan_clear_vepa(struct ipvl_port *port)
153{
154 port->flags &= ~IPVLAN_F_VEPA;
155}
156
157void ipvlan_init_secret(void);
158unsigned int ipvlan_mac_hash(const unsigned char *addr);
159rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb);
160void ipvlan_process_multicast(struct work_struct *work);
161int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev);
162void ipvlan_ht_addr_add(struct ipvl_dev *ipvlan, struct ipvl_addr *addr);
163struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan,
164 const void *iaddr, bool is_v6);
165bool ipvlan_addr_busy(struct ipvl_port *port, void *iaddr, bool is_v6);
166void ipvlan_ht_addr_del(struct ipvl_addr *addr);
167struct sk_buff *ipvlan_l3_rcv(struct net_device *dev, struct sk_buff *skb,
168 u16 proto);
169unsigned int ipvlan_nf_input(void *priv, struct sk_buff *skb,
170 const struct nf_hook_state *state);
171void ipvlan_count_rx(const struct ipvl_dev *ipvlan,
172 unsigned int len, bool success, bool mcast);
173int ipvlan_link_new(struct net *src_net, struct net_device *dev,
174 struct nlattr *tb[], struct nlattr *data[],
175 struct netlink_ext_ack *extack);
176void ipvlan_link_delete(struct net_device *dev, struct list_head *head);
177void ipvlan_link_setup(struct net_device *dev);
178int ipvlan_link_register(struct rtnl_link_ops *ops);
179#endif
180
