drbd: distribute former syncer_conf settings to disk, connection, and resource level

This commit breaks the API again.

Move per-volume former syncer options into disk_conf.
Move per-connection former syncer options into net_conf.
Renamed the remainign sync_conf to res_opts

Syncer settings have been changeable at runtime, so we need to prepare
for these settings to be runtime-changeable in their new home as well.

Introduce new configuration operations, and share the netlink attribute
between "attach" (create new disk) and "disk-opts" (change options).
Same for "connect" and "net-opts".

Some fields cannot be changed at runtime, however.
Introduce a new flag GENLA_F_INVARIANT to be able to trigger on that in
the generated validation and assignment functions.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Lars Ellenberg 2011-03-23 14:31:09 +01:00 committed by Philipp Reisner
parent 6b75dced00
commit f399002e68
10 changed files with 570 additions and 365 deletions

View file

@ -59,12 +59,20 @@ enum {
GENLA_F_MANDATORY = 1 << 14,
GENLA_F_REQUIRED = 1 << 15,
/* This will not be present in the __u16 .nla_type, but can be
* triggered on in <struct>_to_skb, to exclude "sensitive"
* information from broadcasts, or on unpriviledged get requests.
* This is useful because genetlink multicast groups can be listened in
* on by anyone. */
/* Below will not be present in the __u16 .nla_type, but can be
* triggered on in <struct>_to_skb resp. <struct>_from_attrs */
/* To exclude "sensitive" information from broadcasts, or on
* unpriviledged get requests. This is useful because genetlink
* multicast groups can be listened in on by anyone. */
GENLA_F_SENSITIVE = 1 << 16,
/* INVARIAN options cannot be changed at runtime.
* Useful to share an attribute policy and struct definition,
* between some "create" and "change" commands,
* but disallow certain fields to be changed online.
*/
GENLA_F_INVARIANT = 1 << 17,
};
#define __nla_type(x) ((__u16)((__u16)(x) & (__u16)NLA_TYPE_MASK))