diff options
Diffstat (limited to 'include/linux/netlink.h')
| -rw-r--r-- | include/linux/netlink.h | 170 |
1 files changed, 16 insertions, 154 deletions
diff --git a/include/linux/netlink.h b/include/linux/netlink.h index f80c56ac4d82..e0f746b7b95c 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -1,160 +1,12 @@ #ifndef __LINUX_NETLINK_H #define __LINUX_NETLINK_H -#include <linux/socket.h> /* for __kernel_sa_family_t */ -#include <linux/types.h> - -#define NETLINK_ROUTE 0 /* Routing/device hook */ -#define NETLINK_UNUSED 1 /* Unused number */ -#define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */ -#define NETLINK_FIREWALL 3 /* Unused number, formerly ip_queue */ -#define NETLINK_SOCK_DIAG 4 /* socket monitoring */ -#define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */ -#define NETLINK_XFRM 6 /* ipsec */ -#define NETLINK_SELINUX 7 /* SELinux event notifications */ -#define NETLINK_ISCSI 8 /* Open-iSCSI */ -#define NETLINK_AUDIT 9 /* auditing */ -#define NETLINK_FIB_LOOKUP 10 -#define NETLINK_CONNECTOR 11 -#define NETLINK_NETFILTER 12 /* netfilter subsystem */ -#define NETLINK_IP6_FW 13 -#define NETLINK_DNRTMSG 14 /* DECnet routing messages */ -#define NETLINK_KOBJECT_UEVENT 15 /* Kernel messages to userspace */ -#define NETLINK_GENERIC 16 -/* leave room for NETLINK_DM (DM Events) */ -#define NETLINK_SCSITRANSPORT 18 /* SCSI Transports */ -#define NETLINK_ECRYPTFS 19 -#define NETLINK_RDMA 20 -#define NETLINK_CRYPTO 21 /* Crypto layer */ - -#define NETLINK_INET_DIAG NETLINK_SOCK_DIAG - -#define MAX_LINKS 32 - -struct sockaddr_nl { - __kernel_sa_family_t nl_family; /* AF_NETLINK */ - unsigned short nl_pad; /* zero */ - __u32 nl_pid; /* port ID */ - __u32 nl_groups; /* multicast groups mask */ -}; - -struct nlmsghdr { - __u32 nlmsg_len; /* Length of message including header */ - __u16 nlmsg_type; /* Message content */ - __u16 nlmsg_flags; /* Additional flags */ - __u32 nlmsg_seq; /* Sequence number */ - __u32 nlmsg_pid; /* Sending process port ID */ -}; - -/* Flags values */ - -#define NLM_F_REQUEST 1 /* It is request message. */ -#define NLM_F_MULTI 2 /* Multipart message, terminated by NLMSG_DONE */ -#define NLM_F_ACK 4 /* Reply with ack, with zero or error code */ -#define NLM_F_ECHO 8 /* Echo this request */ -#define NLM_F_DUMP_INTR 16 /* Dump was inconsistent due to sequence change */ - -/* Modifiers to GET request */ -#define NLM_F_ROOT 0x100 /* specify tree root */ -#define NLM_F_MATCH 0x200 /* return all matching */ -#define NLM_F_ATOMIC 0x400 /* atomic GET */ -#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH) - -/* Modifiers to NEW request */ -#define NLM_F_REPLACE 0x100 /* Override existing */ -#define NLM_F_EXCL 0x200 /* Do not touch, if it exists */ -#define NLM_F_CREATE 0x400 /* Create, if it does not exist */ -#define NLM_F_APPEND 0x800 /* Add to end of list */ - -/* - 4.4BSD ADD NLM_F_CREATE|NLM_F_EXCL - 4.4BSD CHANGE NLM_F_REPLACE - - True CHANGE NLM_F_CREATE|NLM_F_REPLACE - Append NLM_F_CREATE - Check NLM_F_EXCL - */ - -#define NLMSG_ALIGNTO 4U -#define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) ) -#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr))) -#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN)) -#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len)) -#define NLMSG_DATA(nlh) ((void*)(((char*)nlh) + NLMSG_LENGTH(0))) -#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \ - (struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len))) -#define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \ - (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \ - (nlh)->nlmsg_len <= (len)) -#define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len))) - -#define NLMSG_NOOP 0x1 /* Nothing. */ -#define NLMSG_ERROR 0x2 /* Error */ -#define NLMSG_DONE 0x3 /* End of a dump */ -#define NLMSG_OVERRUN 0x4 /* Data lost */ - -#define NLMSG_MIN_TYPE 0x10 /* < 0x10: reserved control messages */ - -struct nlmsgerr { - int error; - struct nlmsghdr msg; -}; - -#define NETLINK_ADD_MEMBERSHIP 1 -#define NETLINK_DROP_MEMBERSHIP 2 -#define NETLINK_PKTINFO 3 -#define NETLINK_BROADCAST_ERROR 4 -#define NETLINK_NO_ENOBUFS 5 - -struct nl_pktinfo { - __u32 group; -}; - -#define NET_MAJOR 36 /* Major 36 is reserved for networking */ - -enum { - NETLINK_UNCONNECTED = 0, - NETLINK_CONNECTED, -}; - -/* - * <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)--> - * +---------------------+- - -+- - - - - - - - - -+- - -+ - * | Header | Pad | Payload | Pad | - * | (struct nlattr) | ing | | ing | - * +---------------------+- - -+- - - - - - - - - -+- - -+ - * <-------------- nlattr->nla_len --------------> - */ - -struct nlattr { - __u16 nla_len; - __u16 nla_type; -}; - -/* - * nla_type (16 bits) - * +---+---+-------------------------------+ - * | N | O | Attribute Type | - * +---+---+-------------------------------+ - * N := Carries nested attributes - * O := Payload stored in network byte order - * - * Note: The N and O flag are mutually exclusive. - */ -#define NLA_F_NESTED (1 << 15) -#define NLA_F_NET_BYTEORDER (1 << 14) -#define NLA_TYPE_MASK ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER) - -#define NLA_ALIGNTO 4 -#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1)) -#define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr))) - -#ifdef __KERNEL__ #include <linux/capability.h> #include <linux/skbuff.h> #include <linux/export.h> #include <net/scm.h> +#include <uapi/linux/netlink.h> struct net; @@ -245,6 +97,8 @@ struct netlink_callback { struct netlink_callback *cb); int (*done)(struct netlink_callback *cb); void *data; + /* the module that dump function belong to */ + struct module *module; u16 family; u16 min_dump_alloc; unsigned int prev_seq, seq; @@ -262,15 +116,23 @@ __nlmsg_put(struct sk_buff *skb, u32 portid, u32 seq, int type, int len, int fla struct netlink_dump_control { int (*dump)(struct sk_buff *skb, struct netlink_callback *); - int (*done)(struct netlink_callback*); + int (*done)(struct netlink_callback *); void *data; + struct module *module; u16 min_dump_alloc; }; -extern int netlink_dump_start(struct sock *ssk, struct sk_buff *skb, - const struct nlmsghdr *nlh, - struct netlink_dump_control *control); +extern int __netlink_dump_start(struct sock *ssk, struct sk_buff *skb, + const struct nlmsghdr *nlh, + struct netlink_dump_control *control); +static inline int netlink_dump_start(struct sock *ssk, struct sk_buff *skb, + const struct nlmsghdr *nlh, + struct netlink_dump_control *control) +{ + if (!control->module) + control->module = THIS_MODULE; -#endif /* __KERNEL__ */ + return __netlink_dump_start(ssk, skb, nlh, control); +} #endif /* __LINUX_NETLINK_H */ |