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| author | Patrick Ohly <patrick.ohly@intel.com> | 2009-02-12 05:03:36 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-15 22:43:33 -0800 |
| commit | cb9eff097831007afb30d64373f29d99825d0068 (patch) | |
| tree | 823a5668c6f4b3f577a1d4cc73b3df2d7e33c5c4 /arch/sparc | |
| parent | a75244c3d519fcb490ca2bf3f123c98017f1e8d0 (diff) | |
| download | linux-cb9eff097831007afb30d64373f29d99825d0068.tar.gz | |
net: new user space API for time stamping of incoming and outgoing packets
User space can request hardware and/or software time stamping. Reporting of the result(s) via a new control message is enabled separately for each field in the message because some of the fields may require additional computation and thus cause overhead. User space can tell the different kinds of time stamps apart and choose what suits its needs. When a TX timestamp operation is requested, the TX skb will be cloned and the clone will be time stamped (in hardware or software) and added to the socket error queue of the skb, if the skb has a socket associated with it. The actual TX timestamp will reach userspace as a RX timestamp on the cloned packet. If timestamping is requested and no timestamping is done in the device driver (potentially this may use hardware timestamping), it will be done in software after the device's start_hard_xmit routine. Signed-off-by: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/include/asm/socket.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/socket.h b/arch/sparc/include/asm/socket.h index bf50d0c2d583..982a12f959f4 100644 --- a/arch/sparc/include/asm/socket.h +++ b/arch/sparc/include/asm/socket.h @@ -50,6 +50,9 @@ #define SO_MARK 0x0022 +#define SO_TIMESTAMPING 0x0023 +#define SCM_TIMESTAMPING SO_TIMESTAMPING + /* Security levels - as per NRL IPv6 - don't actually do anything */ #define SO_SECURITY_AUTHENTICATION 0x5001 #define SO_SECURITY_ENCRYPTION_TRANSPORT 0x5002 |