include/net/addrconf.h

Source file repositories/reference/linux-study-clean/include/net/addrconf.h

File Facts

System
Linux kernel
Corpus path
include/net/addrconf.h
Extension
.h
Size
15684 bytes
Lines
567
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

struct prefix_info {
	__u8			type;
	__u8			length;
	__u8			prefix_len;

	union __packed {
		__u8		flags;
		struct __packed {
#if defined(__BIG_ENDIAN_BITFIELD)
			__u8	onlink : 1,
				autoconf : 1,
				routeraddr : 1,
				preferpd : 1,
				reserved : 4;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
			__u8	reserved : 4,
				preferpd : 1,
				routeraddr : 1,
				autoconf : 1,
				onlink : 1;
#else
#error "Please fix <asm/byteorder.h>"
#endif
		};
	};
	__be32			valid;
	__be32			prefered;
	__be32			reserved2;

	struct in6_addr		prefix;
};

/* rfc4861 4.6.2: IPv6 PIO is 32 bytes in size */
static_assert(sizeof(struct prefix_info) == 32);

#include <linux/ipv6.h>
#include <linux/netdevice.h>
#include <net/if_inet6.h>
#include <net/ipv6.h>

struct in6_validator_info {
	struct in6_addr		i6vi_addr;
	struct inet6_dev	*i6vi_dev;
	struct netlink_ext_ack	*extack;
};

struct ifa6_config {
	const struct in6_addr	*pfx;
	unsigned int		plen;

	u8			ifa_proto;

	const struct in6_addr	*peer_pfx;

	u32			rt_priority;
	u32			ifa_flags;
	u32			preferred_lft;
	u32			valid_lft;
	u16			scope;
};

enum addr_type_t {
	UNICAST_ADDR,
	MULTICAST_ADDR,
	ANYCAST_ADDR,
};

struct inet6_fill_args {
	u32 portid;
	u32 seq;
	int event;
	unsigned int flags;
	int netnsid;
	int ifindex;
	enum addr_type_t type;
	bool force_rt_scope_universe;
};

int addrconf_init(void);
void addrconf_cleanup(void);

int addrconf_add_ifaddr(struct net *net, void __user *arg);
int addrconf_del_ifaddr(struct net *net, void __user *arg);
int addrconf_set_dstaddr(struct net *net, void __user *arg);

int ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
		  const struct net_device *dev, int strict);
int ipv6_chk_addr_and_flags(struct net *net, const struct in6_addr *addr,
			    const struct net_device *dev, bool skip_dev_check,
			    int strict, u32 banned_flags);

Annotation

Implementation Notes