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2
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4
5#ifndef __IPVLAN_H
6#define __IPVLAN_H
7
8#include <linux/kernel.h>
9#include <linux/types.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/rculist.h>
13#include <linux/notifier.h>
14#include <linux/netdevice.h>
15#include <linux/etherdevice.h>
16#include <linux/if_arp.h>
17#include <linux/if_link.h>
18#include <linux/if_vlan.h>
19#include <linux/ip.h>
20#include <linux/inetdevice.h>
21#include <linux/netfilter.h>
22#include <net/ip.h>
23#include <net/ip6_route.h>
24#include <net/netns/generic.h>
25#include <net/rtnetlink.h>
26#include <net/route.h>
27#include <net/addrconf.h>
28#include <net/l3mdev.h>
29
30#define IPVLAN_DRV "ipvlan"
31#define IPV_DRV_VER "0.1"
32
33#define IPVLAN_HASH_SIZE (1 << BITS_PER_BYTE)
34#define IPVLAN_HASH_MASK (IPVLAN_HASH_SIZE - 1)
35
36#define IPVLAN_MAC_FILTER_BITS 8
37#define IPVLAN_MAC_FILTER_SIZE (1 << IPVLAN_MAC_FILTER_BITS)
38#define IPVLAN_MAC_FILTER_MASK (IPVLAN_MAC_FILTER_SIZE - 1)
39
40#define IPVLAN_QBACKLOG_LIMIT 1000
41
42typedef enum {
43 IPVL_IPV6 = 0,
44 IPVL_ICMPV6,
45 IPVL_IPV4,
46 IPVL_ARP,
47} ipvl_hdr_type;
48
49struct ipvl_pcpu_stats {
50 u64 rx_pkts;
51 u64 rx_bytes;
52 u64 rx_mcast;
53 u64 tx_pkts;
54 u64 tx_bytes;
55 struct u64_stats_sync syncp;
56 u32 rx_errs;
57 u32 tx_drps;
58};
59
60struct ipvl_port;
61
62struct ipvl_dev {
63 struct net_device *dev;
64 struct list_head pnode;
65 struct ipvl_port *port;
66 struct net_device *phy_dev;
67 struct list_head addrs;
68 struct ipvl_pcpu_stats __percpu *pcpu_stats;
69 DECLARE_BITMAP(mac_filters, IPVLAN_MAC_FILTER_SIZE);
70 netdev_features_t sfeatures;
71 u32 msg_enable;
72 spinlock_t addrs_lock;
73};
74
75struct ipvl_addr {
76 struct ipvl_dev *master;
77 union {
78 struct in6_addr ip6;
79 struct in_addr ip4;
80 } ipu;
81#define ip6addr ipu.ip6
82#define ip4addr ipu.ip4
83 struct hlist_node hlnode;
84 struct list_head anode;
85 ipvl_hdr_type atype;
86 struct rcu_head rcu;
87};
88
89struct ipvl_port {
90 struct net_device *dev;
91 possible_net_t pnet;
92 struct hlist_head hlhead[IPVLAN_HASH_SIZE];
93 struct list_head ipvlans;
94 u16 mode;
95 u16 flags;
96 u16 dev_id_start;
97 struct work_struct wq;
98 struct sk_buff_head backlog;
99 int count;
100 struct ida ida;
101};
102
103struct ipvl_skb_cb {
104 bool tx_pkt;
105};
106#define IPVL_SKB_CB(_skb) ((struct ipvl_skb_cb *)&((_skb)->cb[0]))
107
108static inline struct ipvl_port *ipvlan_port_get_rcu(const struct net_device *d)
109{
110 return rcu_dereference(d->rx_handler_data);
111}
112
113static inline struct ipvl_port *ipvlan_port_get_rcu_bh(const struct net_device *d)
114{
115 return rcu_dereference_bh(d->rx_handler_data);
116}
117
118static inline struct ipvl_port *ipvlan_port_get_rtnl(const struct net_device *d)
119{
120 return rtnl_dereference(d->rx_handler_data);
121}
122
123static inline bool ipvlan_is_private(const struct ipvl_port *port)
124{
125 return !!(port->flags & IPVLAN_F_PRIVATE);
126}
127
128static inline void ipvlan_mark_private(struct ipvl_port *port)
129{
130 port->flags |= IPVLAN_F_PRIVATE;
131}
132
133static inline void ipvlan_clear_private(struct ipvl_port *port)
134{
135 port->flags &= ~IPVLAN_F_PRIVATE;
136}
137
138static inline bool ipvlan_is_vepa(const struct ipvl_port *port)
139{
140 return !!(port->flags & IPVLAN_F_VEPA);
141}
142
143static inline void ipvlan_mark_vepa(struct ipvl_port *port)
144{
145 port->flags |= IPVLAN_F_VEPA;
146}
147
148static inline void ipvlan_clear_vepa(struct ipvl_port *port)
149{
150 port->flags &= ~IPVLAN_F_VEPA;
151}
152
153void ipvlan_init_secret(void);
154unsigned int ipvlan_mac_hash(const unsigned char *addr);
155rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb);
156void ipvlan_process_multicast(struct work_struct *work);
157int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev);
158void ipvlan_ht_addr_add(struct ipvl_dev *ipvlan, struct ipvl_addr *addr);
159struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan,
160 const void *iaddr, bool is_v6);
161bool ipvlan_addr_busy(struct ipvl_port *port, void *iaddr, bool is_v6);
162void ipvlan_ht_addr_del(struct ipvl_addr *addr);
163struct ipvl_addr *ipvlan_addr_lookup(struct ipvl_port *port, void *lyr3h,
164 int addr_type, bool use_dest);
165void *ipvlan_get_L3_hdr(struct ipvl_port *port, struct sk_buff *skb, int *type);
166void ipvlan_count_rx(const struct ipvl_dev *ipvlan,
167 unsigned int len, bool success, bool mcast);
168int ipvlan_link_new(struct net *src_net, struct net_device *dev,
169 struct nlattr *tb[], struct nlattr *data[],
170 struct netlink_ext_ack *extack);
171void ipvlan_link_delete(struct net_device *dev, struct list_head *head);
172void ipvlan_link_setup(struct net_device *dev);
173int ipvlan_link_register(struct rtnl_link_ops *ops);
174#ifdef CONFIG_IPVLAN_L3S
175int ipvlan_l3s_register(struct ipvl_port *port);
176void ipvlan_l3s_unregister(struct ipvl_port *port);
177void ipvlan_migrate_l3s_hook(struct net *oldnet, struct net *newnet);
178int ipvlan_l3s_init(void);
179void ipvlan_l3s_cleanup(void);
180#else
181static inline int ipvlan_l3s_register(struct ipvl_port *port)
182{
183 return -ENOTSUPP;
184}
185
186static inline void ipvlan_l3s_unregister(struct ipvl_port *port)
187{
188}
189
190static inline void ipvlan_migrate_l3s_hook(struct net *oldnet,
191 struct net *newnet)
192{
193}
194
195static inline int ipvlan_l3s_init(void)
196{
197 return 0;
198}
199
200static inline void ipvlan_l3s_cleanup(void)
201{
202}
203#endif
204
205static inline bool netif_is_ipvlan_port(const struct net_device *dev)
206{
207 return rcu_access_pointer(dev->rx_handler) == ipvlan_handle_frame;
208}
209
210#endif
211
