Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / net / af_unix.h

diff --git a/kernel/include/net/af_unix.h b/kernel/include/net/af_unix.h
new file mode 100644 (file)
index 0000000..a175ba4
--- /dev/null
+++ b/kernel/include/net/af_unix.h
@@ -0,0 +1,81 @@
+#ifndef __LINUX_NET_AFUNIX_H
+#define __LINUX_NET_AFUNIX_H
+
+#include <linux/socket.h>
+#include <linux/un.h>
+#include <linux/mutex.h>
+#include <net/sock.h>
+
+void unix_inflight(struct file *fp);
+void unix_notinflight(struct file *fp);
+void unix_gc(void);
+void wait_for_unix_gc(void);
+struct sock *unix_get_socket(struct file *filp);
+struct sock *unix_peer_get(struct sock *);
+
+#define UNIX_HASH_SIZE 256
+#define UNIX_HASH_BITS 8
+
+extern unsigned int unix_tot_inflight;
+extern spinlock_t unix_table_lock;
+extern struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
+
+struct unix_address {
+       atomic_t        refcnt;
+       int             len;
+       unsigned int    hash;
+       struct sockaddr_un name[0];
+};
+
+struct unix_skb_parms {
+       struct pid              *pid;           /* Skb credentials      */
+       kuid_t                  uid;
+       kgid_t                  gid;
+       struct scm_fp_list      *fp;            /* Passed files         */
+#ifdef CONFIG_SECURITY_NETWORK
+       u32                     secid;          /* Security ID          */
+#endif
+       u32                     consumed;
+};
+
+#define UNIXCB(skb)    (*(struct unix_skb_parms *)&((skb)->cb))
+#define UNIXSID(skb)   (&UNIXCB((skb)).secid)
+
+#define unix_state_lock(s)     spin_lock(&unix_sk(s)->lock)
+#define unix_state_unlock(s)   spin_unlock(&unix_sk(s)->lock)
+#define unix_state_lock_nested(s) \
+                               spin_lock_nested(&unix_sk(s)->lock, \
+                               SINGLE_DEPTH_NESTING)
+
+/* The AF_UNIX socket */
+struct unix_sock {
+       /* WARNING: sk has to be the first member */
+       struct sock             sk;
+       struct unix_address     *addr;
+       struct path             path;
+       struct mutex            readlock;
+       struct sock             *peer;
+       struct list_head        link;
+       atomic_long_t           inflight;
+       spinlock_t              lock;
+       unsigned char           recursion_level;
+       unsigned long           gc_flags;
+#define UNIX_GC_CANDIDATE      0
+#define UNIX_GC_MAYBE_CYCLE    1
+       struct socket_wq        peer_wq;
+};
+#define unix_sk(__sk) ((struct unix_sock *)__sk)
+
+#define peer_wait peer_wq.wait
+
+long unix_inq_len(struct sock *sk);
+long unix_outq_len(struct sock *sk);
+
+#ifdef CONFIG_SYSCTL
+int unix_sysctl_register(struct net *net);
+void unix_sysctl_unregister(struct net *net);
+#else
+static inline int unix_sysctl_register(struct net *net) { return 0; }
+static inline void unix_sysctl_unregister(struct net *net) {}
+#endif
+#endif