1 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/socket.h b/include/linux/socket.h
index 3273a0c5043b..354cc5617f8b 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -24,6 +24,9 @@ struct __kernel_sockaddr_storage {
 #include <linux/types.h>                /* pid_t                        */
 #include <linux/compiler.h>             /* __user                       */
 
+#define __sockaddr_check_size(size)     \
+        BUILD_BUG_ON(((size) > sizeof(struct __kernel_sockaddr_storage)))
+
 #ifdef __KERNEL__
 # ifdef CONFIG_PROC_FS
 struct seq_file;
@@ -65,6 +68,12 @@ struct msghdr {
         unsigned        msg_flags;
 };
 
+/* For recvmmsg/sendmmsg */
+struct mmsghdr {
+        struct msghdr   msg_hdr;
+        unsigned        msg_len;
+};
+
 /*
  *      POSIX 1003.1g - ancillary data object information
  *      Ancillary data consits of a sequence of pairs of
@@ -246,6 +255,7 @@ struct ucred {
 #define MSG_ERRQUEUE    0x2000  /* Fetch message from error queue */
 #define MSG_NOSIGNAL    0x4000  /* Do not generate SIGPIPE */
 #define MSG_MORE        0x8000  /* Sender will send more */
+#define MSG_WAITFORONE  0x10000 /* recvmmsg(): block until 1+ packets avail */
 
 #define MSG_EOF         MSG_FIN
 
@@ -312,6 +322,10 @@ extern int move_addr_to_user(struct sockaddr *kaddr, int klen, void __user *uadd
 extern int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr *kaddr);
 extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);
 
+struct timespec;
+
+extern int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen,
+                          unsigned int flags, struct timespec *timeout);
 #endif
 #endif /* not kernel and not glibc */
 #endif /* _LINUX_SOCKET_H */