On Tue, 2018-03-06 at 17:12 -0800, Jesus Sanchez-Palencia wrote:
> Extend SO_TXTIME APIs with new per-packet parameters: a clockid_t and
> a drop_if_late flag. With this commit the API becomes:
>
>
* diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
* index d8340e6e8814..951969ceaf65 100644
* --- a/include/linux/skbuff.h
* +++ b/include/linux/skbuff.h
* @@ -788,6 +788,9 @@ struct sk_buff {
* __u8 tc_redirected:1;
* __u8 tc_from_ingress:1;
* #endif
* + __u8 tc_drop_if_late:1;
* +
* + clockid_t txtime_clockid;
*
* #ifdef CONFIG_NET_SCHED
* __u16 tc_index; /* traffic
control index */
This is adding 32+1 bits to sk_buff, and possibly holes in this very
very hot (and already too fat) structure.
Do we really need 32 bits for a clockid_t ?
