linux-kernel - [PATCH 3/4] w1: document struct w1_netlink_msg and struct w1_netlink

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Message-Id: <1391390104-31154-4-git-send-email-David@Fries.net>
Date:	Sun,  2 Feb 2014 19:15:02 -0600
From:	David Fries <David@...es.net>
To:	linux-kernel@...r.kernel.org
Cc:	Evgeniy Polyakov <zbr@...emap.net>
Subject: [PATCH 3/4] w1: document struct w1_netlink_msg and struct w1_netlink_cmd

I wasn't sure on the length, so I looked it up and documented it.

Signed-off-by: David Fries <David@...es.net>
---
 drivers/w1/w1_netlink.h |   25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/w1/w1_netlink.h b/drivers/w1/w1_netlink.h
index 1e9504e..c646a98 100644
--- a/drivers/w1/w1_netlink.h
+++ b/drivers/w1/w1_netlink.h
@@ -49,6 +49,19 @@ enum w1_netlink_message_types {
 	W1_LIST_MASTERS,
 };
 
+/**
+ * struct w1_netlink_msg - holds w1 message type, id, and result
+ *
+ * @type: one of enum w1_netlink_message_types
+ * @status: kernel feedback for success 0 or errno failure value
+ * @len: length of data following w1_netlink_msg
+ * @id: union holding master bus id (msg.id) and slave device id (id[8]).
+ * @data: start address of any following data
+ *
+ * The base message structure for w1 messages over netlink.
+ * The netlink connector data sequence is, struct nlmsghdr, struct cn_msg,
+ * then one or more struct w1_netlink_msg (each with optional data).
+ */
 struct w1_netlink_msg
 {
 	__u8				type;
@@ -66,6 +79,7 @@ struct w1_netlink_msg
 
 /**
  * enum w1_commands - commands available for master or slave operations
+ *
  * @W1_CMD_READ: read len bytes
  * @W1_CMD_WRITE: write len bytes
  * @W1_CMD_SEARCH: initiate a standard search, returns only the slave
@@ -93,6 +107,17 @@ enum w1_commands {
 	W1_CMD_MAX
 };
 
+/**
+ * struct w1_netlink_cmd - holds the command and data
+ *
+ * @cmd: one of enum w1_commands
+ * @res: reserved
+ * @len: length of data following w1_netlink_cmd
+ * @data: start address of any following data
+ *
+ * One or more struct w1_netlink_cmd is placed starting at w1_netlink_msg.data
+ * each with optional data.
+ */
 struct w1_netlink_cmd
 {
 	__u8				cmd;
-- 
1.7.10.4

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