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net: socket: use BIT() for MSG_*

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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>
This commit is contained in:
Menglong Dong 2021-03-09 17:51:35 -08:00 committed by David S. Miller
parent c1acda9807
commit 0bb3262c02
1 changed files with 36 additions and 33 deletions
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69
include/linux/socket.h
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@ -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_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 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_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