From: Willem de Bruijn <willemdebruijn.ker...@gmail.com>
Date: Wed, 11 Sep 2019 15:50:51 -0400
> From: Willem de Bruijn <will...@google.com>
>
> Enable setting skb->mark for UDP and RAW sockets using cmsg.
>
> This is analogous to existing support for TOS, TTL, txtime, etc.
>
> Packet sockets already support this as of commit c7d39e32632e
> ("packet: support per-packet fwmark for af_packet sendmsg").
>
> Similar to other fields, implement by
> 1. initialize the sockcm_cookie.mark from socket option sk_mark
> 2. optionally overwrite this in ip_cmsg_send/ip6_datagram_send_ctl
> 3. initialize inet_cork.mark from sockcm_cookie.mark
> 4. initialize each (usually just one) skb->mark from inet_cork.mark
>
> Step 1 is handled in one location for most protocols by ipcm_init_sk
> as of commit 351782067b6b ("ipv4: ipcm_cookie initializers").
>
> Signed-off-by: Willem de Bruijn <will...@google.com>
Looks good, applied.
