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210 lines
5.4 KiB
210 lines
5.4 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Copyright (c) 2014 Mahesh Bandewar <[email protected]> |
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*/ |
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#ifndef __IPVLAN_H |
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#define __IPVLAN_H |
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#include <linux/kernel.h> |
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#include <linux/types.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/rculist.h> |
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#include <linux/notifier.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/if_arp.h> |
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#include <linux/if_link.h> |
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#include <linux/if_vlan.h> |
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#include <linux/ip.h> |
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#include <linux/inetdevice.h> |
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#include <linux/netfilter.h> |
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#include <net/ip.h> |
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#include <net/ip6_route.h> |
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#include <net/netns/generic.h> |
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#include <net/rtnetlink.h> |
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#include <net/route.h> |
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#include <net/addrconf.h> |
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#include <net/l3mdev.h> |
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#define IPVLAN_DRV "ipvlan" |
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#define IPV_DRV_VER "0.1" |
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#define IPVLAN_HASH_SIZE (1 << BITS_PER_BYTE) |
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#define IPVLAN_HASH_MASK (IPVLAN_HASH_SIZE - 1) |
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#define IPVLAN_MAC_FILTER_BITS 8 |
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#define IPVLAN_MAC_FILTER_SIZE (1 << IPVLAN_MAC_FILTER_BITS) |
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#define IPVLAN_MAC_FILTER_MASK (IPVLAN_MAC_FILTER_SIZE - 1) |
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#define IPVLAN_QBACKLOG_LIMIT 1000 |
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typedef enum { |
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IPVL_IPV6 = 0, |
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IPVL_ICMPV6, |
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IPVL_IPV4, |
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IPVL_ARP, |
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} ipvl_hdr_type; |
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struct ipvl_pcpu_stats { |
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u64 rx_pkts; |
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u64 rx_bytes; |
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u64 rx_mcast; |
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u64 tx_pkts; |
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u64 tx_bytes; |
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struct u64_stats_sync syncp; |
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u32 rx_errs; |
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u32 tx_drps; |
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}; |
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struct ipvl_port; |
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struct ipvl_dev { |
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struct net_device *dev; |
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struct list_head pnode; |
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struct ipvl_port *port; |
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struct net_device *phy_dev; |
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struct list_head addrs; |
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struct ipvl_pcpu_stats __percpu *pcpu_stats; |
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DECLARE_BITMAP(mac_filters, IPVLAN_MAC_FILTER_SIZE); |
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netdev_features_t sfeatures; |
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u32 msg_enable; |
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spinlock_t addrs_lock; |
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}; |
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struct ipvl_addr { |
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struct ipvl_dev *master; /* Back pointer to master */ |
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union { |
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struct in6_addr ip6; /* IPv6 address on logical interface */ |
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struct in_addr ip4; /* IPv4 address on logical interface */ |
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} ipu; |
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#define ip6addr ipu.ip6 |
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#define ip4addr ipu.ip4 |
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struct hlist_node hlnode; /* Hash-table linkage */ |
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struct list_head anode; /* logical-interface linkage */ |
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ipvl_hdr_type atype; |
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struct rcu_head rcu; |
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}; |
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struct ipvl_port { |
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struct net_device *dev; |
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possible_net_t pnet; |
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struct hlist_head hlhead[IPVLAN_HASH_SIZE]; |
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struct list_head ipvlans; |
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u16 mode; |
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u16 flags; |
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u16 dev_id_start; |
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struct work_struct wq; |
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struct sk_buff_head backlog; |
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int count; |
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struct ida ida; |
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}; |
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struct ipvl_skb_cb { |
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bool tx_pkt; |
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}; |
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#define IPVL_SKB_CB(_skb) ((struct ipvl_skb_cb *)&((_skb)->cb[0])) |
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static inline struct ipvl_port *ipvlan_port_get_rcu(const struct net_device *d) |
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{ |
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return rcu_dereference(d->rx_handler_data); |
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} |
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static inline struct ipvl_port *ipvlan_port_get_rcu_bh(const struct net_device *d) |
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{ |
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return rcu_dereference_bh(d->rx_handler_data); |
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} |
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static inline struct ipvl_port *ipvlan_port_get_rtnl(const struct net_device *d) |
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{ |
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return rtnl_dereference(d->rx_handler_data); |
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} |
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static inline bool ipvlan_is_private(const struct ipvl_port *port) |
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{ |
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return !!(port->flags & IPVLAN_F_PRIVATE); |
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} |
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static inline void ipvlan_mark_private(struct ipvl_port *port) |
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{ |
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port->flags |= IPVLAN_F_PRIVATE; |
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} |
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static inline void ipvlan_clear_private(struct ipvl_port *port) |
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{ |
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port->flags &= ~IPVLAN_F_PRIVATE; |
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} |
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static inline bool ipvlan_is_vepa(const struct ipvl_port *port) |
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{ |
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return !!(port->flags & IPVLAN_F_VEPA); |
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} |
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static inline void ipvlan_mark_vepa(struct ipvl_port *port) |
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{ |
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port->flags |= IPVLAN_F_VEPA; |
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} |
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static inline void ipvlan_clear_vepa(struct ipvl_port *port) |
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{ |
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port->flags &= ~IPVLAN_F_VEPA; |
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} |
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void ipvlan_init_secret(void); |
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unsigned int ipvlan_mac_hash(const unsigned char *addr); |
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rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb); |
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void ipvlan_process_multicast(struct work_struct *work); |
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int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev); |
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void ipvlan_ht_addr_add(struct ipvl_dev *ipvlan, struct ipvl_addr *addr); |
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struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan, |
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const void *iaddr, bool is_v6); |
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bool ipvlan_addr_busy(struct ipvl_port *port, void *iaddr, bool is_v6); |
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void ipvlan_ht_addr_del(struct ipvl_addr *addr); |
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struct ipvl_addr *ipvlan_addr_lookup(struct ipvl_port *port, void *lyr3h, |
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int addr_type, bool use_dest); |
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void *ipvlan_get_L3_hdr(struct ipvl_port *port, struct sk_buff *skb, int *type); |
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void ipvlan_count_rx(const struct ipvl_dev *ipvlan, |
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unsigned int len, bool success, bool mcast); |
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int ipvlan_link_new(struct net *src_net, struct net_device *dev, |
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struct nlattr *tb[], struct nlattr *data[], |
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struct netlink_ext_ack *extack); |
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void ipvlan_link_delete(struct net_device *dev, struct list_head *head); |
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void ipvlan_link_setup(struct net_device *dev); |
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int ipvlan_link_register(struct rtnl_link_ops *ops); |
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#ifdef CONFIG_IPVLAN_L3S |
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int ipvlan_l3s_register(struct ipvl_port *port); |
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void ipvlan_l3s_unregister(struct ipvl_port *port); |
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void ipvlan_migrate_l3s_hook(struct net *oldnet, struct net *newnet); |
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int ipvlan_l3s_init(void); |
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void ipvlan_l3s_cleanup(void); |
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#else |
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static inline int ipvlan_l3s_register(struct ipvl_port *port) |
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{ |
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return -ENOTSUPP; |
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} |
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static inline void ipvlan_l3s_unregister(struct ipvl_port *port) |
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{ |
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} |
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static inline void ipvlan_migrate_l3s_hook(struct net *oldnet, |
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struct net *newnet) |
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{ |
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} |
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static inline int ipvlan_l3s_init(void) |
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{ |
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return 0; |
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} |
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static inline void ipvlan_l3s_cleanup(void) |
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{ |
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} |
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#endif /* CONFIG_IPVLAN_L3S */ |
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static inline bool netif_is_ipvlan_port(const struct net_device *dev) |
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{ |
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return rcu_access_pointer(dev->rx_handler) == ipvlan_handle_frame; |
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} |
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#endif /* __IPVLAN_H */
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