network: rename DiffServiceCodePoint to CopyDSCP

Old name was slightly misleading, because this flag does not determine
whether DSCP is used overall, but only if it is copied to the
decapsulated packet. Rename to better reflect that.

"Copy" does not imply direction. This is on purpose, because we might
later on enhance the setting to allow/disallow copying in the other
direction, to the encapsulated packet. If that is implemented,
CopyDSCP could understand additional values. This is nicer than
having two separate settings and follows the example of DHCP=.

Also, we try to avoid abbreviations, but we allow acronyms
like MTU, in DiscoverPathMTU=.

This setting was recently added, so it's fine to rename it without
backwards compat.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/network/networkd-netdev-tunnel.c b/src/network/networkd-netdev-tunnel.c
index 1af234aba3..7fd9ef584b 100644
--- a/src/network/networkd-netdev-tunnel.c
+++ b/src/network/networkd-netdev-tunnel.c
@@ -281,7 +281,7 @@ static int netdev_ip6tnl_fill_message_create(NetDev *netdev, Link *link, sd_netl
                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_IPTUN_FLOWINFO attribute: %m");
         }
 
-        if (t->dscp)
+        if (t->copy_dscp)
                 t->flags |= IP6_TNL_F_RCV_DSCP_COPY;
 
         r = sd_netlink_message_append_u32(m, IFLA_IPTUN_FLAGS, t->flags);