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| author |   Johannes Berg <johannes.berg@intel.com> | 2016-10-24 14:40:02 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-10-27 16:16:09 -0400 |
| commit | a07ea4d9941af5a0c6f0be2a71b51ac9c083c5e5 (patch) | |
| tree | 52d22e6ed0079bb5a78d610c2ee33a783f070553 /include/net/genetlink.h | |
| parent | genetlink: introduce and use genl_family_attrbuf() (diff) | |
| download | wireguard-linux-a07ea4d9941af5a0c6f0be2a71b51ac9c083c5e5.tar.xz wireguard-linux-a07ea4d9941af5a0c6f0be2a71b51ac9c083c5e5.zip | |
genetlink: no longer support using static family IDs
Static family IDs have never really been used, the only
use case was the workaround I introduced for those users
that assumed their family ID was also their multicast
group ID.
Additionally, because static family IDs would never be
reserved by the generic netlink code, using a relatively
low ID would only work for built-in families that can be
registered immediately after generic netlink is started,
which is basically only the control family (apart from
the workaround code, which I also had to add code for so
it would reserve those IDs)
Thus, anything other than GENL_ID_GENERATE is flawed and
luckily not used except in the cases I mentioned. Move
those workarounds into a few lines of code, and then get
rid of GENL_ID_GENERATE entirely, making it more robust.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/genetlink.h')
| -rw-r--r-- | include/net/genetlink.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/include/net/genetlink.h b/include/net/genetlink.h index ef9defb3f5bc..43a5c3975a2f 100644 --- a/include/net/genetlink.h +++ b/include/net/genetlink.h @@ -20,7 +20,7 @@ struct genl_info; /** * struct genl_family - generic netlink family - * @id: protocol family idenfitier + * @id: protocol family identifier (private) * @hdrsize: length of user specific header in bytes * @name: name of family * @version: protocol version @@ -48,7 +48,7 @@ struct genl_info; * @n_ops: number of operations supported by this family (private) */ struct genl_family { - unsigned int id; + unsigned int id; /* private */ unsigned int hdrsize; char name[GENL_NAMSIZ]; unsigned int version; @@ -149,9 +149,6 @@ static inline int genl_register_family(struct genl_family *family) * Registers the specified family and operations from the specified table. * Only one family may be registered with the same family name or identifier. * - * The family id may equal GENL_ID_GENERATE causing an unique id to - * be automatically generated and assigned. - * * Either a doit or dumpit callback must be specified for every registered * operation or the function will fail. Only one operation structure per * command identifier may be registered. |