]> git.baikalelectronics.ru Git - kernel.git/commit
net: add option to enable error queue packets waking select
authorKeller, Jacob E <jacob.e.keller@intel.com>
Thu, 28 Mar 2013 11:19:25 +0000 (11:19 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 31 Mar 2013 23:44:20 +0000 (19:44 -0400)
commitd4ac741bc36390966e1a56d67f663b8848df9772
treed76759bfe44399949f70cc344f3be76b8448cac2
parentd86933ff9d52040e756c5154036fa58d6680c65c
net: add option to enable error queue packets waking select

Currently, when a socket receives something on the error queue it only wakes up
the socket on select if it is in the "read" list, that is the socket has
something to read. It is useful also to wake the socket if it is in the error
list, which would enable software to wait on error queue packets without waking
up for regular data on the socket. The main use case is for receiving
timestamped transmit packets which return the timestamp to the socket via the
error queue. This enables an application to select on the socket for the error
queue only instead of for the regular traffic.

-v2-
* Added the SO_SELECT_ERR_QUEUE socket option to every architechture specific file
* Modified every socket poll function that checks error queue

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jeffrey Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Matthew Vick <matthew.vick@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
23 files changed:
arch/alpha/include/uapi/asm/socket.h
arch/avr32/include/uapi/asm/socket.h
arch/cris/include/uapi/asm/socket.h
arch/frv/include/uapi/asm/socket.h
arch/h8300/include/uapi/asm/socket.h
arch/ia64/include/uapi/asm/socket.h
arch/m32r/include/uapi/asm/socket.h
arch/mips/include/uapi/asm/socket.h
arch/mn10300/include/uapi/asm/socket.h
arch/parisc/include/uapi/asm/socket.h
arch/powerpc/include/uapi/asm/socket.h
arch/s390/include/uapi/asm/socket.h
arch/sparc/include/uapi/asm/socket.h
arch/xtensa/include/uapi/asm/socket.h
include/net/sock.h
include/uapi/asm-generic/socket.h
net/bluetooth/af_bluetooth.c
net/core/datagram.c
net/core/sock.c
net/iucv/af_iucv.c
net/nfc/llcp/sock.c
net/sctp/socket.c
net/unix/af_unix.c