net: socket: use BIT() for MSG_*

The bit mask for MSG_* seems a little confused here. Replace it
with BIT() to make it clear to understand.

Signed-off-by: Menglong Dong <dong.menglong@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/socket.h b/include/linux/socket.h
index 385894b..e88859f 100644 (file)
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -283,42 +283,45 @@ struct ucred {
    Added those for 1003.1g not all are supported yet
  */
 
-#define MSG_OOB                1
-#define MSG_PEEK       2
-#define MSG_DONTROUTE  4
-#define MSG_TRYHARD     4       /* Synonym for MSG_DONTROUTE for DECnet */
-#define MSG_CTRUNC     8
-#define MSG_PROBE      0x10    /* Do not send. Only probe path f.e. for MTU */
-#define MSG_TRUNC      0x20
-#define MSG_DONTWAIT   0x40    /* Nonblocking io                */
-#define MSG_EOR         0x80   /* End of record */
-#define MSG_WAITALL    0x100   /* Wait for a full request */
-#define MSG_FIN         0x200
-#define MSG_SYN                0x400
-#define MSG_CONFIRM    0x800   /* Confirm path validity */
-#define MSG_RST                0x1000
-#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_SENDPAGE_NOPOLICY 0x10000 /* sendpage() internal : do no apply policy */
-#define MSG_SENDPAGE_NOTLAST 0x20000 /* sendpage() internal : not the last page */
-#define MSG_BATCH      0x40000 /* sendmmsg(): more messages coming */
-#define MSG_EOF         MSG_FIN
-#define MSG_NO_SHARED_FRAGS 0x80000 /* sendpage() internal : page frags are not shared */
-#define MSG_SENDPAGE_DECRYPTED 0x100000 /* sendpage() internal : page may carry
-                                         * plain text and require encryption
-                                         */
-
-#define MSG_ZEROCOPY   0x4000000       /* Use user data in kernel path */
-#define MSG_FASTOPEN   0x20000000      /* Send data in TCP SYN */
-#define MSG_CMSG_CLOEXEC 0x40000000    /* Set close_on_exec for file
-                                          descriptor received through
-                                          SCM_RIGHTS */
+#define MSG_OOB                BIT(0)
+#define MSG_PEEK       BIT(1)
+#define MSG_DONTROUTE  BIT(2)
+#define MSG_TRYHARD    BIT(2)  /* Synonym for MSG_DONTROUTE for DECnet         */
+#define MSG_CTRUNC     BIT(3)
+#define MSG_PROBE      BIT(4)  /* Do not send. Only probe path f.e. for MTU    */
+#define MSG_TRUNC      BIT(5)
+#define MSG_DONTWAIT   BIT(6)  /* Nonblocking io               */
+#define MSG_EOR                BIT(7)  /* End of record                */
+#define MSG_WAITALL    BIT(8)  /* Wait for a full request      */
+#define MSG_FIN                BIT(9)
+#define MSG_SYN                BIT(10)
+#define MSG_CONFIRM    BIT(11) /* Confirm path validity        */
+#define MSG_RST                BIT(12)
+#define MSG_ERRQUEUE   BIT(13) /* Fetch message from error queue */
+#define MSG_NOSIGNAL   BIT(14) /* Do not generate SIGPIPE      */
+#define MSG_MORE       BIT(15) /* Sender will send more        */
+#define MSG_WAITFORONE BIT(16) /* recvmmsg(): block until 1+ packets avail */
+#define MSG_SENDPAGE_NOPOLICY  BIT(16) /* sendpage() internal : do no apply policy */
+#define MSG_SENDPAGE_NOTLAST   BIT(17) /* sendpage() internal : not the last page  */
+#define MSG_BATCH      BIT(18)         /* sendmmsg(): more messages coming */
+#define MSG_EOF                MSG_FIN
+#define MSG_NO_SHARED_FRAGS    BIT(19) /* sendpage() internal : page frags
+                                        * are not shared
+                                        */
+#define MSG_SENDPAGE_DECRYPTED BIT(20) /* sendpage() internal : page may carry
+                                        * plain text and require encryption
+                                        */
+
+#define MSG_ZEROCOPY   BIT(26)         /* Use user data in kernel path */
+#define MSG_FASTOPEN   BIT(29)         /* Send data in TCP SYN */
+#define MSG_CMSG_CLOEXEC       BIT(30) /* Set close_on_exec for file
+                                        * descriptor received through
+                                        * SCM_RIGHTS
+                                        */
 #if defined(CONFIG_COMPAT)
-#define MSG_CMSG_COMPAT        0x80000000      /* This message needs 32 bit fixups */
+#define MSG_CMSG_COMPAT        BIT(31) /* This message needs 32 bit fixups */
 #else
-#define MSG_CMSG_COMPAT        0               /* We never have 32 bit fixups */
+#define MSG_CMSG_COMPAT        0       /* We never have 32 bit fixups */
 #endif