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-rw-r--r--include/linux/netlink.h210
1 files changed, 40 insertions, 170 deletions
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index f74dd133788f..e0f746b7b95c 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -1,158 +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;
@@ -162,9 +16,10 @@ static inline struct nlmsghdr *nlmsg_hdr(const struct sk_buff *skb)
}
struct netlink_skb_parms {
- struct ucred creds; /* Skb credentials */
- __u32 pid;
+ struct scm_creds creds; /* Skb credentials */
+ __u32 portid;
__u32 dst_group;
+ struct sock *ssk;
};
#define NETLINK_CB(skb) (*(struct netlink_skb_parms*)&((skb)->cb))
@@ -174,17 +29,27 @@ struct netlink_skb_parms {
extern void netlink_table_grab(void);
extern void netlink_table_ungrab(void);
+#define NL_CFG_F_NONROOT_RECV (1 << 0)
+#define NL_CFG_F_NONROOT_SEND (1 << 1)
+
/* optional Netlink kernel configuration parameters */
struct netlink_kernel_cfg {
unsigned int groups;
+ unsigned int flags;
void (*input)(struct sk_buff *skb);
struct mutex *cb_mutex;
void (*bind)(int group);
};
-extern struct sock *netlink_kernel_create(struct net *net, int unit,
- struct module *module,
- struct netlink_kernel_cfg *cfg);
+extern struct sock *__netlink_kernel_create(struct net *net, int unit,
+ struct module *module,
+ struct netlink_kernel_cfg *cfg);
+static inline struct sock *
+netlink_kernel_create(struct net *net, int unit, struct netlink_kernel_cfg *cfg)
+{
+ return __netlink_kernel_create(net, unit, THIS_MODULE, cfg);
+}
+
extern void netlink_kernel_release(struct sock *sk);
extern int __netlink_change_ngroups(struct sock *sk, unsigned int groups);
extern int netlink_change_ngroups(struct sock *sk, unsigned int groups);
@@ -192,14 +57,14 @@ extern void __netlink_clear_multicast_users(struct sock *sk, unsigned int group)
extern void netlink_clear_multicast_users(struct sock *sk, unsigned int group);
extern void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err);
extern int netlink_has_listeners(struct sock *sk, unsigned int group);
-extern int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 pid, int nonblock);
-extern int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, __u32 pid,
+extern int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 portid, int nonblock);
+extern int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, __u32 portid,
__u32 group, gfp_t allocation);
extern int netlink_broadcast_filtered(struct sock *ssk, struct sk_buff *skb,
- __u32 pid, __u32 group, gfp_t allocation,
+ __u32 portid, __u32 group, gfp_t allocation,
int (*filter)(struct sock *dsk, struct sk_buff *skb, void *data),
void *filter_data);
-extern int netlink_set_err(struct sock *ssk, __u32 pid, __u32 group, int code);
+extern int netlink_set_err(struct sock *ssk, __u32 portid, __u32 group, int code);
extern int netlink_register_notifier(struct notifier_block *nb);
extern int netlink_unregister_notifier(struct notifier_block *nb);
@@ -232,6 +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;
@@ -240,29 +107,32 @@ struct netlink_callback {
struct netlink_notify {
struct net *net;
- int pid;
+ int portid;
int protocol;
};
struct nlmsghdr *
-__nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, int type, int len, int flags);
+__nlmsg_put(struct sk_buff *skb, u32 portid, u32 seq, int type, int len, int flags);
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);
-
-
-#define NL_NONROOT_RECV 0x1
-#define NL_NONROOT_SEND 0x2
-extern void netlink_set_nonroot(int protocol, unsigned flag);
+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 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 19:15:35 +0000