/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_INETDEVICE_H#define _LINUX_INETDEVICE_H#ifdef __KERNEL__#include <linux/bitmap.h>#include <linux/if .h>#include <linux/ip.h>#include <linux/netdevice.h>#include <linux/rcupdate.h>#include <linux/timer.h>#include <linux/sysctl.h>#include <linux/rtnetlink.h>#include <linux/refcount.h>struct ipv4_devconf {void *sysctl;int data[IPV4_DEVCONF_MAX];#define MC_HASH_SZ_LOG 9struct in_device {struct net_device *dev;int dead;struct in_ifaddr __rcu *ifa_list;/* IP ifaddr chain */ struct ip_mc_list __rcu *mc_list; /* IP multicast filter chain */ struct ip_mc_list __rcu * __rcu *mc_hash;int mc_count; /* Number of installed mcasts */ struct ip_mc_list *mc_tomb;unsigned long mr_v1_seen;unsigned long mr_v2_seen;unsigned long mr_maxdelay;unsigned long mr_qi; /* Query Interval */ unsigned long mr_qri; /* Query Response Interval */ unsigned char mr_qrv; /* Query Robustness Variable */ unsigned char mr_gq_running;struct timer_list mr_gq_timer; /* general query timer */ struct timer_list mr_ifc_timer; /* interface change timer */ struct neigh_parms *arp_parms;struct ipv4_devconf cnf;struct rcu_head rcu_head;#define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1])#define IPV4_DEVCONF_RO(cnf, attr) READ_ONCE(IPV4_DEVCONF(cnf, attr))#define IPV4_DEVCONF_ALL(net, attr) \#define IPV4_DEVCONF_ALL_RO(net, attr) READ_ONCE(IPV4_DEVCONF_ALL(net, attr))static inline int ipv4_devconf_get(const struct in_device *in_dev, int index)return READ_ONCE(in_dev->cnf.data[index]);static inline void ipv4_devconf_set(struct in_device *in_dev, int index,int val)static inline void ipv4_devconf_setall(struct in_device *in_dev)#define IN_DEV_CONF_GET(in_dev, attr) \## attr)#define IN_DEV_CONF_SET(in_dev, attr, val) \## attr, (val))#define IN_DEV_ANDCONF(in_dev, attr) \#define IN_DEV_NET_ORCONF(in_dev, net, attr) \#define IN_DEV_ORCONF(in_dev, attr) \#define IN_DEV_MAXCONF(in_dev, attr) \#define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)#define IN_DEV_MFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), MC_FORWARDING)#define IN_DEV_BFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), BC_FORWARDING)#define IN_DEV_RPFILTER(in_dev) IN_DEV_MAXCONF((in_dev), RP_FILTER)#define IN_DEV_SRC_VMARK(in_dev) IN_DEV_ORCONF((in_dev), SRC_VMARK)#define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \#define IN_DEV_ACCEPT_LOCAL(in_dev) IN_DEV_ORCONF((in_dev), ACCEPT_LOCAL)#define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)#define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)#define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)#define IN_DEV_PROXY_ARP_PVLAN(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP_PVLAN)#define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)#define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)#define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \#define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)#define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)#define IN_DEV_PROMOTE_SECONDARIES(in_dev) \#define IN_DEV_ROUTE_LOCALNET(in_dev) IN_DEV_ORCONF(in_dev, ROUTE_LOCALNET)#define IN_DEV_NET_ROUTE_LOCALNET(in_dev, net) \#define IN_DEV_RX_REDIRECTS(in_dev) \#define IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) \#define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)#define IN_DEV_ARP_ACCEPT(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ACCEPT)#define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)#define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)#define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)#define IN_DEV_ARP_EVICT_NOCARRIER(in_dev) IN_DEV_ANDCONF((in_dev), \struct in_ifaddr {struct hlist_node addr_lst;struct in_ifaddr __rcu *ifa_next;struct in_device *ifa_dev;struct rcu_head rcu_head;unsigned char ifa_scope;unsigned char ifa_prefixlen;unsigned char ifa_proto;char ifa_label[IFNAMSIZ];/* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */ unsigned long ifa_cstamp; /* created timestamp */ unsigned long ifa_tstamp; /* updated timestamp */ struct in_validator_info {struct in_device *ivi_dev;struct netlink_ext_ack *extack;int register_inetaddr_notifier(struct notifier_block *nb);int unregister_inetaddr_notifier(struct notifier_block *nb);int register_inetaddr_validator_notifier(struct notifier_block *nb);int unregister_inetaddr_validator_notifier(struct notifier_block *nb);void inet_netconf_notify_devconf(struct net *net, int event, int type,int ifindex, struct ipv4_devconf *devconf);struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref);static inline struct net_device *ip_dev_find(struct net *net, __be32 addr)return __ip_dev_find(net, addr, true );int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);int devinet_ioctl(struct net *net, unsigned int cmd, struct ifreq *);#ifdef CONFIG_INETint inet_gifconf(struct net_device *dev, char __user *buf, int len, int size);#else static inline int inet_gifconf(struct net_device *dev, char __user *buf,int len, int size)return 0;#endif void devinet_init(void );struct in_device *inetdev_by_index(struct net *, int );const struct net_device *dev, __be32 dst, int scope);struct net *net, struct in_device *in_dev, __be32 dst,int scope);struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix,struct in_ifaddr *inet_lookup_ifaddr_rcu(struct net *net, __be32 addr);static inline bool inet_ifa_match(__be32 addr, const struct in_ifaddr *ifa)return !((addr^ifa->ifa_address)&ifa->ifa_mask);/* * Check if a mask is acceptable. static __inline__ bool bad_mask(__be32 mask, __be32 addr)if (addr & (mask = ~mask))return true ;if (hmask & (hmask+1))return true ;return false ;#define in_dev_for_each_ifa_rtnl(ifa, in_dev) \for (ifa = rtnl_dereference((in_dev)->ifa_list); ifa; \#define in_dev_for_each_ifa_rtnl_net(net, ifa, in_dev) \for (ifa = rtnl_net_dereference(net, (in_dev)->ifa_list); ifa; \#define in_dev_for_each_ifa_rcu(ifa, in_dev) \for (ifa = rcu_dereference((in_dev)->ifa_list); ifa; \static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)return rcu_dereference(dev->ip_ptr);static inline struct in_device *in_dev_get(const struct net_device *dev)struct in_device *in_dev;if (in_dev)return in_dev;static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev)return rtnl_dereference(dev->ip_ptr);static inline struct in_device *__in_dev_get_rtnl_net(const struct net_device *dev)return rtnl_net_dereference(dev_net(dev), dev->ip_ptr);/* called with rcu_read_lock or rtnl held */ static inline bool ip_ignore_linkdown(const struct net_device *dev)struct in_device *in_dev;bool rc = false ;if (in_dev &&true ;return rc;static inline struct neigh_parms *__in_dev_arp_parms_get_rcu(const struct net_device *dev)struct in_device *in_dev = __in_dev_get_rcu(dev);return in_dev ? in_dev->arp_parms : NULL;void in_dev_finish_destroy(struct in_device *idev);static inline void in_dev_put(struct in_device *idev)if (refcount_dec_and_test(&idev->refcnt))#define __in_dev_put(idev) refcount_dec(&(idev)->refcnt)#define in_dev_hold(idev) refcount_inc(&(idev)->refcnt)#endif /* __KERNEL__ */ static __inline__ __be32 inet_make_mask(int logmask)if (logmask)return htonl(~((1U<<(32-logmask))-1));return 0;static __inline__ int inet_mask_len(__be32 mask)if (!hmask)return 0;return 32 - ffz(~hmask);#endif /* _LINUX_INETDEVICE_H */ quality 98%
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