nfsd: eliminate unused nfs4_callback.cb_stat

[safe/jmp/linux-2.6] / include / linux / netlink.h

diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index e61e1e1..bec1062 100644 (file)
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -23,14 +23,17 @@
 #define NETLINK_GENERIC                16
 /* leave room for NETLINK_DM (DM Events) */
 #define NETLINK_SCSITRANSPORT  18      /* SCSI Transports */
+#define NETLINK_ECRYPTFS       19
 
 #define MAX_LINKS 32           
 
+struct net;
+
 struct sockaddr_nl
 {
        sa_family_t     nl_family;      /* AF_NETLINK   */
        unsigned short  nl_pad;         /* zero         */
-       __u32           nl_pid;         /* process pid  */
+       __u32           nl_pid;         /* port ID      */
                __u32           nl_groups;      /* multicast groups mask */
 };
 
@@ -40,7 +43,7 @@ struct nlmsghdr
        __u16           nlmsg_type;     /* Message content */
        __u16           nlmsg_flags;    /* Additional flags */
        __u32           nlmsg_seq;      /* Sequence number */
-       __u32           nlmsg_pid;      /* Sending process PID */
+       __u32           nlmsg_pid;      /* Sending process port ID */
 };
 
 /* Flags values */
@@ -128,6 +131,20 @@ struct nlattr
        __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)))
@@ -137,14 +154,19 @@ struct nlattr
 #include <linux/capability.h>
 #include <linux/skbuff.h>
 
+static inline struct nlmsghdr *nlmsg_hdr(const struct sk_buff *skb)
+{
+       return (struct nlmsghdr *)skb->data;
+}
+
 struct netlink_skb_parms
 {
        struct ucred            creds;          /* Skb credentials      */
        __u32                   pid;
-       __u32                   dst_pid;
        __u32                   dst_group;
        kernel_cap_t            eff_cap;
        __u32                   loginuid;       /* Login (audit) uid */
+       __u32                   sessionid;      /* Session id (audit) */
        __u32                   sid;            /* SELinux security id */
 };
 
@@ -152,7 +174,14 @@ struct netlink_skb_parms
 #define NETLINK_CREDS(skb)     (&NETLINK_CB((skb)).creds)
 
 
-extern struct sock *netlink_kernel_create(int unit, unsigned int groups, void (*input)(struct sock *sk, int len), struct module *module);
+extern struct sock *netlink_kernel_create(struct net *net,
+                                         int unit,unsigned int groups,
+                                         void (*input)(struct sk_buff *skb),
+                                         struct mutex *cb_mutex,
+                                         struct module *module);
+extern void netlink_kernel_release(struct sock *sk);
+extern int netlink_change_ngroups(struct sock *sk, unsigned int groups);
+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);
@@ -165,15 +194,22 @@ extern int netlink_unregister_notifier(struct notifier_block *nb);
 /* finegrained unicast helpers: */
 struct sock *netlink_getsockbyfilp(struct file *filp);
 int netlink_attachskb(struct sock *sk, struct sk_buff *skb, int nonblock,
-               long timeo, struct sock *ssk);
+                     long *timeo, struct sock *ssk);
 void netlink_detachskb(struct sock *sk, struct sk_buff *skb);
-int netlink_sendskb(struct sock *sk, struct sk_buff *skb, int protocol);
+int netlink_sendskb(struct sock *sk, struct sk_buff *skb);
 
 /*
  *     skb should fit one page. This choice is good for headerless malloc.
+ *     But we should limit to 8K so that userspace does not have to
+ *     use enormous buffer sizes on recvmsg() calls just to avoid
+ *     MSG_TRUNC when PAGE_SIZE is very large.
  */
-#define NLMSG_GOODORDER 0
-#define NLMSG_GOODSIZE (SKB_MAX_ORDER(0, NLMSG_GOODORDER))
+#if PAGE_SIZE < 8192UL
+#define NLMSG_GOODSIZE SKB_WITH_OVERHEAD(PAGE_SIZE)
+#else
+#define NLMSG_GOODSIZE SKB_WITH_OVERHEAD(8192UL)
+#endif
+
 #define NLMSG_DEFAULT_SIZE (NLMSG_GOODSIZE - NLMSG_HDRLEN)
 
 
@@ -184,11 +220,12 @@ struct netlink_callback
        int             (*dump)(struct sk_buff * skb, struct netlink_callback *cb);
        int             (*done)(struct netlink_callback *cb);
        int             family;
-       long            args[5];
+       long            args[6];
 };
 
 struct netlink_notify
 {
+       struct net *net;
        int pid;
        int protocol;
 };
@@ -210,25 +247,13 @@ __nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, int type, int len, int flags)
 }
 
 #define NLMSG_NEW(skb, pid, seq, type, len, flags) \
-({     if (skb_tailroom(skb) < (int)NLMSG_SPACE(len)) \
+({     if (unlikely(skb_tailroom(skb) < (int)NLMSG_SPACE(len))) \
                goto nlmsg_failure; \
        __nlmsg_put(skb, pid, seq, type, len, flags); })
 
 #define NLMSG_PUT(skb, pid, seq, type, len) \
        NLMSG_NEW(skb, pid, seq, type, len, 0)
 
-#define NLMSG_NEW_ANSWER(skb, cb, type, len, flags) \
-       NLMSG_NEW(skb, NETLINK_CB((cb)->skb).pid, \
-                 (cb)->nlh->nlmsg_seq, type, len, flags)
-
-#define NLMSG_END(skb, nlh) \
-({     (nlh)->nlmsg_len = (skb)->tail - (unsigned char *) (nlh); \
-       (skb)->len; })
-
-#define NLMSG_CANCEL(skb, nlh) \
-({     skb_trim(skb, (unsigned char *) (nlh) - (skb)->data); \
-       -1; })
-
 extern int netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
                              struct nlmsghdr *nlh,
                              int (*dump)(struct sk_buff *skb, struct netlink_callback*),