/* * include/net/l3mdev.h - L3 master device API * Copyright (c) 2015 Cumulus Networks * Copyright (c) 2015 David Ahern <dsa@cumulusnetworks.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #ifndef _NET_L3MDEV_H_ #define _NET_L3MDEV_H_ #include <net/dst.h> #include <net/fib_rules.h> /** * struct l3mdev_ops - l3mdev operations * * @l3mdev_fib_table: Get FIB table id to use for lookups * * @l3mdev_l3_rcv: Hook in L3 receive path * * @l3mdev_l3_out: Hook in L3 output path * * @l3mdev_link_scope_lookup: IPv6 lookup for linklocal and mcast destinations */ struct l3mdev_ops { u32 (*l3mdev_fib_table)(const struct net_device *dev); struct sk_buff * (*l3mdev_l3_rcv)(struct net_device *dev, struct sk_buff *skb, u16 proto); struct sk_buff * (*l3mdev_l3_out)(struct net_device *dev, struct sock *sk, struct sk_buff *skb, u16 proto); /* IPv6 ops */ struct dst_entry * (*l3mdev_link_scope_lookup)(const struct net_device *dev, struct flowi6 *fl6); }; #ifdef CONFIG_NET_L3_MASTER_DEV int l3mdev_fib_rule_match(struct net *net, struct flowi *fl, struct fib_lookup_arg *arg); void l3mdev_update_flow(struct net *net, struct flowi *fl); int l3mdev_master_ifindex_rcu(const struct net_device *dev); static inline int l3mdev_master_ifindex(struct net_device *dev) { int ifindex; rcu_read_lock(); ifindex = l3mdev_master_ifindex_rcu(dev); rcu_read_unlock(); return ifindex; } static inline int l3mdev_master_ifindex_by_index(struct net *net, int ifindex) { struct net_device *dev; int rc = 0; if (likely(ifindex)) { rcu_read_lock(); dev = dev_get_by_index_rcu(net, ifindex); if (dev) rc = l3mdev_master_ifindex_rcu(dev); rcu_read_unlock(); } return rc; } static inline struct net_device *l3mdev_master_dev_rcu(const struct net_device *_dev) { /* netdev_master_upper_dev_get_rcu calls * list_first_or_null_rcu to walk the upper dev list. * list_first_or_null_rcu does not handle a const arg. We aren't * making changes, just want the master device from that list so * typecast to remove the const */ struct net_device *dev = (struct net_device *)_dev; struct net_device *master; if (!dev) return NULL; if (netif_is_l3_master(dev)) master = dev; else if (netif_is_l3_slave(dev)) master = netdev_master_upper_dev_get_rcu(dev); else master = NULL; return master; } u32 l3mdev_fib_table_rcu(const struct net_device *dev); u32 l3mdev_fib_table_by_index(struct net *net, int ifindex); static inline u32 l3mdev_fib_table(const struct net_device *dev) { u32 tb_id; rcu_read_lock(); tb_id = l3mdev_fib_table_rcu(dev); rcu_read_unlock(); return tb_id; } static inline bool netif_index_is_l3_master(struct net *net, int ifindex) { struct net_device *dev; bool rc = false; if (ifindex == 0) return false; rcu_read_lock(); dev = dev_get_by_index_rcu(net, ifindex); if (dev) rc = netif_is_l3_master(dev); rcu_read_unlock(); return rc; } struct dst_entry *l3mdev_link_scope_lookup(struct net *net, struct flowi6 *fl6); static inline struct sk_buff *l3mdev_l3_rcv(struct sk_buff *skb, u16 proto) { struct net_device *master = NULL; if (netif_is_l3_slave(skb->dev)) master = netdev_master_upper_dev_get_rcu(skb->dev); else if (netif_is_l3_master(skb->dev) || netif_has_l3_rx_handler(skb->dev)) master = skb->dev; if (master && master->l3mdev_ops->l3mdev_l3_rcv) skb = master->l3mdev_ops->l3mdev_l3_rcv(master, skb, proto); return skb; } static inline struct sk_buff *l3mdev_ip_rcv(struct sk_buff *skb) { return l3mdev_l3_rcv(skb, AF_INET); } static inline struct sk_buff *l3mdev_ip6_rcv(struct sk_buff *skb) { return l3mdev_l3_rcv(skb, AF_INET6); } static inline struct sk_buff *l3mdev_l3_out(struct sock *sk, struct sk_buff *skb, u16 proto) { struct net_device *dev = skb_dst(skb)->dev; if (netif_is_l3_slave(dev)) { struct net_device *master; master = netdev_master_upper_dev_get_rcu(dev); if (master && master->l3mdev_ops->l3mdev_l3_out) skb = master->l3mdev_ops->l3mdev_l3_out(master, sk, skb, proto); } return skb; } static inline struct sk_buff *l3mdev_ip_out(struct sock *sk, struct sk_buff *skb) { return l3mdev_l3_out(sk, skb, AF_INET); } static inline struct sk_buff *l3mdev_ip6_out(struct sock *sk, struct sk_buff *skb) { return l3mdev_l3_out(sk, skb, AF_INET6); } #else static inline int l3mdev_master_ifindex_rcu(const struct net_device *dev) { return 0; } static inline int l3mdev_master_ifindex(struct net_device *dev) { return 0; } static inline int l3mdev_master_ifindex_by_index(struct net *net, int ifindex) { return 0; } static inline struct net_device *l3mdev_master_dev_rcu(const struct net_device *dev) { return NULL; } static inline u32 l3mdev_fib_table_rcu(const struct net_device *dev) { return 0; } static inline u32 l3mdev_fib_table(const struct net_device *dev) { return 0; } static inline u32 l3mdev_fib_table_by_index(struct net *net, int ifindex) { return 0; } static inline bool netif_index_is_l3_master(struct net *net, int ifindex) { return false; } static inline struct dst_entry *l3mdev_link_scope_lookup(struct net *net, struct flowi6 *fl6) { return NULL; } static inline struct sk_buff *l3mdev_ip_rcv(struct sk_buff *skb) { return skb; } static inline struct sk_buff *l3mdev_ip6_rcv(struct sk_buff *skb) { return skb; } static inline struct sk_buff *l3mdev_ip_out(struct sock *sk, struct sk_buff *skb) { return skb; } static inline struct sk_buff *l3mdev_ip6_out(struct sock *sk, struct sk_buff *skb) { return skb; } static inline int l3mdev_fib_rule_match(struct net *net, struct flowi *fl, struct fib_lookup_arg *arg) { return 1; } static inline void l3mdev_update_flow(struct net *net, struct flowi *fl) { } #endif #endif /* _NET_L3MDEV_H_ */
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bluetooth | Folder | 0755 |
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caif | Folder | 0755 |
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iucv | Folder | 0755 |
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netfilter | Folder | 0755 |
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netns | Folder | 0755 |
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nfc | Folder | 0755 |
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phonet | Folder | 0755 |
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sctp | Folder | 0755 |
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tc_act | Folder | 0755 |
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dst.h | File | 13.48 KB | 0644 |
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dst_metadata.h | File | 5.39 KB | 0644 |
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fib_notifier.h | File | 1.29 KB | 0644 |
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fib_rules.h | File | 4.18 KB | 0644 |
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flow.h | File | 6.16 KB | 0644 |
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flow_dissector.h | File | 7.55 KB | 0644 |
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ip.h | File | 18.51 KB | 0644 |
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ipconfig.h | File | 811 B | 0644 |
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ipx.h | File | 4.4 KB | 0644 |
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iw_handler.h | File | 20.91 KB | 0644 |
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kcm.h | File | 4.96 KB | 0644 |
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l3mdev.h | File | 5.86 KB | 0644 |
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lapb.h | File | 4.75 KB | 0644 |
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lib80211.h | File | 3.92 KB | 0644 |
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llc_sap.h | File | 1.08 KB | 0644 |
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lwtunnel.h | File | 5.84 KB | 0644 |
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mac80211.h | File | 230.36 KB | 0644 |
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mac802154.h | File | 15.27 KB | 0644 |
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mip6.h | File | 1.58 KB | 0644 |
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mld.h | File | 2.8 KB | 0644 |
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mpls.h | File | 932 B | 0644 |
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mpls_iptunnel.h | File | 827 B | 0644 |
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mrp.h | File | 3.03 KB | 0644 |
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ncsi.h | File | 1.92 KB | 0644 |
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ndisc.h | File | 13.77 KB | 0644 |
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neighbour.h | File | 15.06 KB | 0644 |
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net_namespace.h | File | 10.08 KB | 0644 |
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net_ratelimit.h | File | 220 B | 0644 |
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netevent.h | File | 910 B | 0644 |
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netlabel.h | File | 20.74 KB | 0644 |
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netlink.h | File | 40.39 KB | 0644 |
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netprio_cgroup.h | File | 1.24 KB | 0644 |
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netrom.h | File | 7.68 KB | 0644 |
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nexthop.h | File | 865 B | 0644 |
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nl802154.h | File | 12.09 KB | 0644 |
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nsh.h | File | 12.31 KB | 0644 |
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p8022.h | File | 447 B | 0644 |
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ping.h | File | 3.45 KB | 0644 |
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pkt_cls.h | File | 17.34 KB | 0644 |
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pkt_sched.h | File | 4.05 KB | 0644 |
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pptp.h | File | 557 B | 0644 |
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protocol.h | File | 4.08 KB | 0644 |
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psample.h | File | 860 B | 0644 |
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psnap.h | File | 351 B | 0644 |
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raw.h | File | 2.07 KB | 0644 |
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rawv6.h | File | 854 B | 0644 |
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red.h | File | 10.45 KB | 0644 |
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regulatory.h | File | 10.12 KB | 0644 |
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request_sock.h | File | 6.46 KB | 0644 |
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rose.h | File | 7.62 KB | 0644 |
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route.h | File | 10.02 KB | 0644 |
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rtnetlink.h | File | 6.13 KB | 0644 |
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sch_generic.h | File | 23.3 KB | 0644 |
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scm.h | File | 3.5 KB | 0644 |
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secure_seq.h | File | 855 B | 0644 |
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seg6.h | File | 1.66 KB | 0644 |
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seg6_hmac.h | File | 1.65 KB | 0644 |
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slhc_vj.h | File | 6.67 KB | 0644 |
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smc.h | File | 440 B | 0644 |
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snmp.h | File | 5.23 KB | 0644 |
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sock.h | File | 69.75 KB | 0644 |
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sock_reuseport.h | File | 863 B | 0644 |
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stp.h | File | 383 B | 0644 |
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strparser.h | File | 3.75 KB | 0644 |
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switchdev.h | File | 6.52 KB | 0644 |
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tcp.h | File | 62.8 KB | 0644 |
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tcp_states.h | File | 1.26 KB | 0644 |
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timewait_sock.h | File | 1.11 KB | 0644 |
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tipc.h | File | 2.34 KB | 0644 |
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tls.h | File | 7.12 KB | 0644 |
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transp_v6.h | File | 2.08 KB | 0644 |
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tso.h | File | 515 B | 0644 |
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tun_proto.h | File | 988 B | 0644 |
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udp.h | File | 12.82 KB | 0644 |
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udp_tunnel.h | File | 5.12 KB | 0644 |
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udplite.h | File | 3.83 KB | 0644 |
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vsock_addr.h | File | 1.05 KB | 0644 |
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vxlan.h | File | 10.43 KB | 0644 |
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wext.h | File | 1.51 KB | 0644 |
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wimax.h | File | 19.97 KB | 0644 |
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x25.h | File | 9.43 KB | 0644 |
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x25device.h | File | 387 B | 0644 |
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xfrm.h | File | 53.72 KB | 0644 |
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