cregit-Linux how code gets into the kernel

Release 4.12 include/linux/inetdevice.h

Directory: include/linux
#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>


struct ipv4_devconf {
	
void	*sysctl;
	
int	data[IPV4_DEVCONF_MAX];
	DECLARE_BITMAP(state, IPV4_DEVCONF_MAX);
};


#define MC_HASH_SZ_LOG 9


struct in_device {
	
struct net_device	*dev;
	
atomic_t		refcnt;
	
int			dead;
	
struct in_ifaddr	*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   */
	
spinlock_t		mc_tomb_lock;
	
struct ip_mc_list	*mc_tomb;
	
unsigned long		mr_v1_seen;
	
unsigned long		mr_v2_seen;
	
unsigned long		mr_maxdelay;
	
unsigned char		mr_qrv;
	
unsigned char		mr_gq_running;
	
unsigned char		mr_ifc_count;
	
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_ALL(net, attr) \
	IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)


static inline int ipv4_devconf_get(struct in_device *in_dev, int index) { index--; return in_dev->cnf.data[index]; }

Contributors

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Herbert Xu28100.00%1100.00%
Total28100.00%1100.00%


static inline void ipv4_devconf_set(struct in_device *in_dev, int index, int val) { index--; set_bit(index, in_dev->cnf.state); in_dev->cnf.data[index] = val; }

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Herbert Xu43100.00%2100.00%
Total43100.00%2100.00%


static inline void ipv4_devconf_setall(struct in_device *in_dev) { bitmap_fill(in_dev->cnf.state, IPV4_DEVCONF_MAX); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu2295.65%150.00%
Thomas Graf14.35%150.00%
Total23100.00%2100.00%

#define IN_DEV_CONF_GET(in_dev, attr) \ ipv4_devconf_get((in_dev), IPV4_DEVCONF_ ## attr) #define IN_DEV_CONF_SET(in_dev, attr, val) \ ipv4_devconf_set((in_dev), IPV4_DEVCONF_ ## attr, (val)) #define IN_DEV_ANDCONF(in_dev, attr) \ (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) && \ IN_DEV_CONF_GET((in_dev), attr)) #define IN_DEV_NET_ORCONF(in_dev, net, attr) \ (IPV4_DEVCONF_ALL(net, attr) || \ IN_DEV_CONF_GET((in_dev), attr)) #define IN_DEV_ORCONF(in_dev, attr) \ IN_DEV_NET_ORCONF(in_dev, dev_net(in_dev->dev), attr) #define IN_DEV_MAXCONF(in_dev, attr) \ (max(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr), \ IN_DEV_CONF_GET((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_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), \ ACCEPT_SOURCE_ROUTE) #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_CONF_GET(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), \ SECURE_REDIRECTS) #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) \ IN_DEV_ORCONF((in_dev), \ PROMOTE_SECONDARIES) #define IN_DEV_ROUTE_LOCALNET(in_dev) IN_DEV_ORCONF(in_dev, ROUTE_LOCALNET) #define IN_DEV_NET_ROUTE_LOCALNET(in_dev, net) \ IN_DEV_NET_ORCONF(in_dev, net, ROUTE_LOCALNET) #define IN_DEV_RX_REDIRECTS(in_dev) \ ((IN_DEV_FORWARD(in_dev) && \ IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \ || (!IN_DEV_FORWARD(in_dev) && \ IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS))) #define IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) \ IN_DEV_CONF_GET((in_dev), IGNORE_ROUTES_WITH_LINKDOWN) #define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER) #define IN_DEV_ARP_ACCEPT(in_dev) IN_DEV_ORCONF((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) struct in_ifaddr { struct hlist_node hash; struct in_ifaddr *ifa_next; struct in_device *ifa_dev; struct rcu_head rcu_head; __be32 ifa_local; __be32 ifa_address; __be32 ifa_mask; __be32 ifa_broadcast; unsigned char ifa_scope; unsigned char ifa_prefixlen; __u32 ifa_flags; char ifa_label[IFNAMSIZ]; /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */ __u32 ifa_valid_lft; __u32 ifa_preferred_lft; unsigned long ifa_cstamp; /* created timestamp */ unsigned long ifa_tstamp; /* updated timestamp */ }; int register_inetaddr_notifier(struct notifier_block *nb); int unregister_inetaddr_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); }

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PersonTokensPropCommitsCommitProp
Eric Dumazet27100.00%1100.00%
Total27100.00%1100.00%

int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b); int devinet_ioctl(struct net *net, unsigned int cmd, void __user *); void devinet_init(void); struct in_device *inetdev_by_index(struct net *, int); __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope); __be32 inet_confirm_addr(struct net *net, struct in_device *in_dev, __be32 dst, __be32 local, int scope); struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
static __inline__ bool inet_ifa_match(__be32 addr, struct in_ifaddr *ifa) { return !((addr^ifa->ifa_address)&ifa->ifa_mask); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2890.32%125.00%
Linus Torvalds13.23%125.00%
Al Viro13.23%125.00%
Yaowei Bai13.23%125.00%
Total31100.00%4100.00%

/* * Check if a mask is acceptable. */
static __inline__ bool bad_mask(__be32 mask, __be32 addr) { __u32 hmask; if (addr & (mask = ~mask)) return true; hmask = ntohl(mask); if (hmask & (hmask+1)) return true; return false; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4075.47%125.00%
Al Viro815.09%125.00%
Yaowei Bai47.55%125.00%
Linus Torvalds11.89%125.00%
Total53100.00%4100.00%

#define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \ for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next) #define for_ifa(in_dev) { struct in_ifaddr *ifa; \ for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next) #define endfor_ifa(in_dev) }
static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev) { return rcu_dereference(dev->ip_ptr); }

Contributors

PersonTokensPropCommitsCommitProp
Herbert Xu2086.96%150.00%
Eric Dumazet313.04%150.00%
Total23100.00%2100.00%


static inline struct in_device *in_dev_get(const struct net_device *dev) { struct in_device *in_dev; rcu_read_lock(); in_dev = __in_dev_get_rcu(dev); if (in_dev) atomic_inc(&in_dev->refcnt); rcu_read_unlock(); return in_dev; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2143.75%120.00%
Eric Dumazet1735.42%120.00%
David S. Miller48.33%120.00%
Linus Torvalds36.25%120.00%
Herbert Xu36.25%120.00%
Total48100.00%5100.00%


static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev) { return rtnl_dereference(dev->ip_ptr); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds1043.48%120.00%
Linus Torvalds (pre-git)730.43%120.00%
Eric Dumazet521.74%240.00%
Herbert Xu14.35%120.00%
Total23100.00%5100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Jiri Pirko34100.00%1100.00%
Total34100.00%1100.00%

void in_dev_finish_destroy(struct in_device *idev);
static inline void in_dev_put(struct in_device *idev) { if (atomic_dec_and_test(&idev->refcnt)) in_dev_finish_destroy(idev); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2385.19%133.33%
David S. Miller311.11%133.33%
Herbert Xu13.70%133.33%
Total27100.00%3100.00%

#define __in_dev_put(idev) atomic_dec(&(idev)->refcnt) #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt) #endif /* __KERNEL__ */
static __inline__ __be32 inet_make_mask(int logmask) { if (logmask) return htonl(~((1U<<(32-logmask))-1)); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3391.67%125.00%
Vincent BENAYOUN12.78%125.00%
Al Viro12.78%125.00%
Linus Torvalds12.78%125.00%
Total36100.00%4100.00%


static __inline__ int inet_mask_len(__be32 mask) { __u32 hmask = ntohl(mask); if (!hmask) return 0; return 32 - ffz(~hmask); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2468.57%133.33%
Al Viro1028.57%133.33%
Linus Torvalds12.86%133.33%
Total35100.00%3100.00%

#endif /* _LINUX_INETDEVICE_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)48843.03%69.68%
Herbert Xu20918.43%58.06%
Eric Dumazet958.38%69.68%
Jiri Pirko544.76%34.84%
David L Stevens363.17%11.61%
Al Viro353.09%69.68%
Julian Anastasov252.20%23.23%
Nicolas Dichtel252.20%23.23%
David S. Miller242.12%23.23%
Linus Torvalds232.03%23.23%
Denis V. Lunev161.41%46.45%
Stephen Hemminger110.97%34.84%
Thomas Graf100.88%23.23%
Arnaldo Carvalho de Melo90.79%11.61%
Andy Gospodarek80.71%11.61%
Patrick McHardy70.62%11.61%
Jamal Hadi Salim70.62%11.61%
Neil Horman70.62%11.61%
Jesper Dangaard Brouer70.62%11.61%
Harald Welte60.53%11.61%
Alexey Kuznetsov60.53%11.61%
Pavel Emelyanov50.44%23.23%
Yaowei Bai50.44%23.23%
Rami Rosen40.35%11.61%
Eric W. Biedermann30.26%11.61%
Satyam Sharma30.26%11.61%
David Ahern30.26%11.61%
Hideaki Yoshifuji / 吉藤英明20.18%11.61%
Vincent BENAYOUN10.09%11.61%
Total1134100.00%62100.00%
Directory: include/linux
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