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packet: Fix undefined behavior in bit shift 

Shifting signed 32-bit value by 31 bits is undefined.  Changing most
significant bit to unsigned.

Changes included in v2:
  - use subsystem specific subject lines
  - CC required mailing lists

Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiunn Chang 2019-06-26 22:25:30 -05:00 committed by David S. Miller
parent b60a77386b
commit 79293f4967
1 changed files with 1 additions and 1 deletions
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2
include/uapi/linux/if_packet.h
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@ -123,7 +123,7 @@ struct tpacket_auxdata {
/* Rx and Tx ring - header status */
#define TP_STATUS_TS_SOFTWARE (1 << 29)
#define TP_STATUS_TS_SYS_HARDWARE (1 << 30) /* deprecated, never set */
#define TP_STATUS_TS_RAW_HARDWARE (1 << 31)
#define TP_STATUS_TS_RAW_HARDWARE (1U << 31)
/* Rx ring - feature request bits */
#define TP_FT_REQ_FILL_RXHASH 0x1