Name
sock_tx_timestamp — 
     checks whether the outgoing packet is to be time stamped
 
Synopsis
| void sock_tx_timestamp ( | const struct sock * sk, | 
|  | __u8 * tx_flags ); | 
 
Arguments
- sk
- 
     socket sending this packet
     
- tx_flags
- 
     completed with instructions for time stamping
     
Note 
   callers should take care of initial *tx_flags value (usually 0)