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| author | Keller, Jacob E <jacob.e.keller@intel.com> | 2013-03-28 12:19:25 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-01 01:44:20 +0200 |
| commit | 7d4c04fc170087119727119074e72445f2bb192b (patch) | |
| tree | d76759bfe44399949f70cc344f3be76b8448cac2 /arch/xtensa | |
| parent | doc: packet: add minimal TPACKET_V3 example code (diff) | |
| download | linux-7d4c04fc170087119727119074e72445f2bb192b.tar.xz linux-7d4c04fc170087119727119074e72445f2bb192b.zip | |
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>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/include/uapi/asm/socket.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/xtensa/include/uapi/asm/socket.h b/arch/xtensa/include/uapi/asm/socket.h index 35905cb6e419..a8f44f50e651 100644 --- a/arch/xtensa/include/uapi/asm/socket.h +++ b/arch/xtensa/include/uapi/asm/socket.h @@ -83,4 +83,6 @@ #define SO_LOCK_FILTER 44 +#define SO_SELECT_ERR_QUEUE 45 + #endif /* _XTENSA_SOCKET_H */ |