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![David S. Miller](/assets/img/avatar_default.png)
Files removed in 'net-next' had their license header updated in 'net'. We take the remove from 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
198 lines
4.7 KiB
C
198 lines
4.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_MROUTE_H
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#define __LINUX_MROUTE_H
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#include <linux/in.h>
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#include <linux/pim.h>
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#include <linux/rhashtable.h>
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#include <net/sock.h>
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#include <net/fib_rules.h>
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#include <net/fib_notifier.h>
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#include <uapi/linux/mroute.h>
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#ifdef CONFIG_IP_MROUTE
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static inline int ip_mroute_opt(int opt)
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{
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return opt >= MRT_BASE && opt <= MRT_MAX;
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}
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int ip_mroute_setsockopt(struct sock *, int, char __user *, unsigned int);
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int ip_mroute_getsockopt(struct sock *, int, char __user *, int __user *);
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int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg);
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int ipmr_compat_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
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int ip_mr_init(void);
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bool ipmr_rule_default(const struct fib_rule *rule);
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#else
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static inline int ip_mroute_setsockopt(struct sock *sock, int optname,
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char __user *optval, unsigned int optlen)
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{
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return -ENOPROTOOPT;
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}
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static inline int ip_mroute_getsockopt(struct sock *sock, int optname,
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char __user *optval, int __user *optlen)
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{
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return -ENOPROTOOPT;
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}
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static inline int ipmr_ioctl(struct sock *sk, int cmd, void __user *arg)
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{
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return -ENOIOCTLCMD;
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}
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static inline int ip_mr_init(void)
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{
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return 0;
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}
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static inline int ip_mroute_opt(int opt)
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{
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return 0;
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}
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static inline bool ipmr_rule_default(const struct fib_rule *rule)
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{
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return true;
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}
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#endif
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struct vif_device {
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struct net_device *dev; /* Device we are using */
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struct netdev_phys_item_id dev_parent_id; /* Device parent ID */
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unsigned long bytes_in,bytes_out;
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unsigned long pkt_in,pkt_out; /* Statistics */
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unsigned long rate_limit; /* Traffic shaping (NI) */
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unsigned char threshold; /* TTL threshold */
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unsigned short flags; /* Control flags */
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__be32 local,remote; /* Addresses(remote for tunnels)*/
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int link; /* Physical interface index */
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};
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struct vif_entry_notifier_info {
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struct fib_notifier_info info;
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struct net_device *dev;
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vifi_t vif_index;
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unsigned short vif_flags;
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u32 tb_id;
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};
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#define VIFF_STATIC 0x8000
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#define VIF_EXISTS(_mrt, _idx) ((_mrt)->vif_table[_idx].dev != NULL)
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struct mr_table {
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struct list_head list;
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possible_net_t net;
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u32 id;
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struct sock __rcu *mroute_sk;
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struct timer_list ipmr_expire_timer;
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struct list_head mfc_unres_queue;
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struct vif_device vif_table[MAXVIFS];
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struct rhltable mfc_hash;
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struct list_head mfc_cache_list;
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int maxvif;
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atomic_t cache_resolve_queue_len;
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bool mroute_do_assert;
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bool mroute_do_pim;
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int mroute_reg_vif_num;
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};
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/* mfc_flags:
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* MFC_STATIC - the entry was added statically (not by a routing daemon)
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* MFC_OFFLOAD - the entry was offloaded to the hardware
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*/
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enum {
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MFC_STATIC = BIT(0),
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MFC_OFFLOAD = BIT(1),
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};
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struct mfc_cache_cmp_arg {
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__be32 mfc_mcastgrp;
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__be32 mfc_origin;
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};
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/**
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* struct mfc_cache - multicast routing entries
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* @mnode: rhashtable list
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* @mfc_mcastgrp: destination multicast group address
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* @mfc_origin: source address
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* @cmparg: used for rhashtable comparisons
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* @mfc_parent: source interface (iif)
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* @mfc_flags: entry flags
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* @expires: unresolved entry expire time
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* @unresolved: unresolved cached skbs
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* @last_assert: time of last assert
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* @minvif: minimum VIF id
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* @maxvif: maximum VIF id
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* @bytes: bytes that have passed for this entry
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* @pkt: packets that have passed for this entry
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* @wrong_if: number of wrong source interface hits
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* @lastuse: time of last use of the group (traffic or update)
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* @ttls: OIF TTL threshold array
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* @refcount: reference count for this entry
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* @list: global entry list
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* @rcu: used for entry destruction
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*/
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struct mfc_cache {
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struct rhlist_head mnode;
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union {
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struct {
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__be32 mfc_mcastgrp;
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__be32 mfc_origin;
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};
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struct mfc_cache_cmp_arg cmparg;
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};
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vifi_t mfc_parent;
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int mfc_flags;
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union {
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struct {
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unsigned long expires;
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struct sk_buff_head unresolved;
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} unres;
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struct {
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unsigned long last_assert;
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int minvif;
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int maxvif;
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unsigned long bytes;
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unsigned long pkt;
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unsigned long wrong_if;
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unsigned long lastuse;
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unsigned char ttls[MAXVIFS];
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refcount_t refcount;
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} res;
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} mfc_un;
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struct list_head list;
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struct rcu_head rcu;
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};
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struct mfc_entry_notifier_info {
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struct fib_notifier_info info;
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struct mfc_cache *mfc;
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u32 tb_id;
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};
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struct rtmsg;
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int ipmr_get_route(struct net *net, struct sk_buff *skb,
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__be32 saddr, __be32 daddr,
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struct rtmsg *rtm, u32 portid);
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#ifdef CONFIG_IP_MROUTE
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void ipmr_cache_free(struct mfc_cache *mfc_cache);
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#else
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static inline void ipmr_cache_free(struct mfc_cache *mfc_cache)
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{
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}
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#endif
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static inline void ipmr_cache_put(struct mfc_cache *c)
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{
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if (refcount_dec_and_test(&c->mfc_un.res.refcount))
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ipmr_cache_free(c);
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}
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static inline void ipmr_cache_hold(struct mfc_cache *c)
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{
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refcount_inc(&c->mfc_un.res.refcount);
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}
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#endif
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