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authorAndreas Gruenbacher <agruen@linbit.com>2011-03-30 16:00:17 +0200
committerPhilipp Reisner <philipp.reisner@linbit.com>2012-11-08 16:45:10 +0100
commit0c8e36d9b843be56e4e43d4ef3c3eb6a97205599 (patch)
tree5f593c0b3c4a4052382fa2d23dff87281786e2ad /include/linux/drbd_genl.h
parente658983af6e62304be785cd6b0ae756723057395 (diff)
downloadvexpress-lsk-0c8e36d9b843be56e4e43d4ef3c3eb6a97205599.tar.gz
drbd: Introduce protocol version 100 headers
The 8 byte header finally becomes too small. With the protocol 100 header we have 16 bit for the volume number, proper 32 bit for the data length, and 32 bit for further extensions in the future. Previous versions of drbd are using version 80 headers for all packets short enough for protocol 80. They support both header versions in worker context, but only version 80 headers in asynchronous context. For backwards compatibility, continue to use version 80 headers for short packets before protocol version 100. From protocol version 100 on, use the same header version for all packets. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'include/linux/drbd_genl.h')
-rw-r--r--include/linux/drbd_genl.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/drbd_genl.h b/include/linux/drbd_genl.h
index 938e8560a83..10144d546a6 100644
--- a/include/linux/drbd_genl.h
+++ b/include/linux/drbd_genl.h
@@ -95,8 +95,6 @@ GENL_struct(DRBD_NLA_CFG_REPLY, 1, drbd_cfg_reply,
* and/or the replication group (aka resource) name,
* and the volume id within the resource. */
GENL_struct(DRBD_NLA_CFG_CONTEXT, 2, drbd_cfg_context,
- /* currently only 256 volumes per group,
- * but maybe we still change that */
__u32_field(1, GENLA_F_MANDATORY, ctx_volume)
__str_field(2, GENLA_F_MANDATORY, ctx_conn_name, 128)
)