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Date: Wed, 24 Sep 2014 17:52:04 +0200
From: Ahmed Amamou <ahmed@...di.net>
To: netdev@...r.kernel.org
Cc: william@...di.net, f.cachereul@...halink.fr,
Ahmed Amamou <ahmed@...di.net>,
Kamel Haddadou <kamel@...di.net>
Subject: [RFC PATCH 08/24] net: rbridge: Add Rbridge netlink message skeleton
add data plane and control plane basic message skeleton
add netlink socket registration and unregistration respectively within module init and deinit function
Signed-off-by: Ahmed Amamou <ahmed@...di.net>
Signed-off-by: Kamel Haddadou <kamel@...di.net>
---
net/bridge/Makefile | 2 +-
net/bridge/br.c | 6 ++
net/bridge/br_private.h | 1 +
net/bridge/rbridge/rbr_netlink.c | 152 +++++++++++++++++++++++++++++++++++++++
net/bridge/rbridge/rbr_netlink.h | 62 ++++++++++++++++
5 files changed, 222 insertions(+), 1 deletion(-)
create mode 100644 net/bridge/rbridge/rbr_netlink.c
create mode 100644 net/bridge/rbridge/rbr_netlink.h
diff --git a/net/bridge/Makefile b/net/bridge/Makefile
index 314783c..b11a22b 100644
--- a/net/bridge/Makefile
+++ b/net/bridge/Makefile
@@ -18,4 +18,4 @@ bridge-$(CONFIG_BRIDGE_VLAN_FILTERING) += br_vlan.o
obj-$(CONFIG_NETFILTER) += netfilter/
-bridge-$(CONFIG_TRILL) += rbridge/rbr.o
+bridge-$(CONFIG_TRILL) += rbridge/rbr.o rbridge/rbr_netlink.o
diff --git a/net/bridge/br.c b/net/bridge/br.c
index 1a755a1..51af134 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -178,6 +178,9 @@ static int __init br_init(void)
#if IS_ENABLED(CONFIG_ATM_LANE)
br_fdb_test_addr_hook = br_fdb_test_addr;
#endif
+#ifdef CONFIG_TRILL
+ rbridge_register_genl();
+#endif
return 0;
err_out4:
@@ -210,6 +213,9 @@ static void __exit br_deinit(void)
br_fdb_test_addr_hook = NULL;
#endif
+#ifdef CONFIG_TRILL
+ rbridge_unregister_genl();
+#endif
br_fdb_fini();
}
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 844c87b..6952db8 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -21,6 +21,7 @@
#include <linux/if_vlan.h>
#ifdef CONFIG_TRILL
#include "rbridge/rbr_private.h"
+#include "rbridge/rbr_netlink.h"
#endif
#define BR_HASH_BITS 8
diff --git a/net/bridge/rbridge/rbr_netlink.c b/net/bridge/rbridge/rbr_netlink.c
new file mode 100644
index 0000000..eb7c902
--- /dev/null
+++ b/net/bridge/rbridge/rbr_netlink.c
@@ -0,0 +1,152 @@
+/*
+ * Generic parts
+ * Linux ethernet Rbridge
+ *
+ * Authors:
+ * Ahmed AMAMOU <ahmed@...di.net>
+ * Kamel Haddadou <kamel@...di.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <net/genetlink.h>
+#include <net/netlink.h>
+#include <linux/if_trill.h>
+#include <linux/socket.h>
+#include <linux/socket.h>
+#include "br_private.h"
+#include "rbr_private.h"
+#include "rbr_netlink.h"
+
+static struct nla_policy attrs_policy[TRILL_ATTR_MAX + 1] = {
+ [TRILL_ATTR_U16] = {.type = NLA_U16},
+ [TRILL_ATTR_BIN] = {.type = NLA_UNSPEC},
+};
+
+static struct genl_family trill_genl_family = {
+ .id = GENL_ID_GENERATE,
+ .hdrsize = sizeof(struct trill_nl_header),
+ .name = TRILL_NL_FAMILY,
+ .version = TRILL_NL_VERSION,
+ .maxattr = TRILL_ATTR_MAX
+};
+
+static struct genl_multicast_group trill_mcgrps[] = {
+ [TRILL_MCGRP_OFFSET] = {.name = TRILL_MCAST_NAME,},
+};
+
+static int trill_cmd_set_nicks_info(struct sk_buff *skb, struct genl_info *info)
+{
+ return 0;
+}
+
+static int trill_cmd_get_nicks_info(struct sk_buff *skb, struct genl_info *info)
+{
+ return 0;
+}
+
+static int trill_cmd_add_nicks_info(struct sk_buff *skb, struct genl_info *info)
+{
+ return 0;
+}
+
+static int trill_cmd_set_treeroot_id(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ return 0;
+}
+
+static int trill_cmd_get_rbridge(struct sk_buff *skb, struct genl_info *info)
+{
+ return 0;
+}
+
+static int trill_cmd_set_rbridge(struct sk_buff *skb, struct genl_info *info)
+{
+ return 0;
+}
+
+static int trill_cmd_port_flush(struct sk_buff *skb, struct genl_info *info)
+{
+ return 0;
+}
+
+static int trill_cmd_nick_flush(struct sk_buff *skb, struct genl_info *info)
+{
+ return 0;
+}
+
+static struct genl_ops trill_genl_ops[] = {
+ {
+ .cmd = TRILL_CMD_SET_NICKS_INFO,
+ .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
+ .policy = attrs_policy,
+ .doit = trill_cmd_set_nicks_info,
+ },
+ {
+ .cmd = TRILL_CMD_GET_NICKS_INFO,
+ .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
+ .policy = attrs_policy,
+ .doit = trill_cmd_get_nicks_info,
+ },
+ {
+ .cmd = TRILL_CMD_ADD_NICKS_INFO,
+ .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
+ .policy = attrs_policy,
+ .doit = trill_cmd_add_nicks_info,
+ },
+ {
+ .cmd = TRILL_CMD_SET_TREEROOT_ID,
+ .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
+ .policy = attrs_policy,
+ .doit = trill_cmd_set_treeroot_id,
+ },
+ {
+ .cmd = TRILL_CMD_GET_RBRIDGE,
+ .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
+ .policy = attrs_policy,
+ .doit = trill_cmd_get_rbridge,
+ },
+ {
+ .cmd = TRILL_CMD_SET_RBRIDGE,
+ .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
+ .policy = attrs_policy,
+ .doit = trill_cmd_set_rbridge,
+ },
+ {
+ .cmd = TRILL_CMD_PORT_FLUSH,
+ .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
+ .doit = trill_cmd_port_flush,
+ },
+ {
+ .cmd = TRILL_CMD_NICK_FLUSH,
+ .flags = GENL_ADMIN_PERM, /* Requires CAP_NET_ADMIN privilege. */
+ .policy = attrs_policy,
+ .doit = trill_cmd_nick_flush,
+ },
+};
+
+void __exit rbridge_unregister_genl(void)
+{
+ genl_unregister_family(&trill_genl_family);
+}
+
+int __init rbridge_register_genl(void)
+{
+ int err;
+
+ err =
+ genl_register_family_with_ops_groups(&trill_genl_family,
+ trill_genl_ops, trill_mcgrps);
+ if (err)
+ goto fail_genl_register_family;
+
+ return 0;
+
+ fail_genl_register_family:
+
+ return err;
+}
diff --git a/net/bridge/rbridge/rbr_netlink.h b/net/bridge/rbridge/rbr_netlink.h
new file mode 100644
index 0000000..0556323
--- /dev/null
+++ b/net/bridge/rbridge/rbr_netlink.h
@@ -0,0 +1,62 @@
+/*
+ * Generic parts
+ * Linux ethernet Rbridge
+ *
+ * Authors:
+ * Ahmed AMAMOU <ahmed@...di.net>
+ * Kamel Haddadou <kamel@...di.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef RBR_NETLINK_H_
+#define RBR_NETLINK_H_
+
+/* TRILL Generic Netlink attributes definition*/
+#define TRILL_NL_VERSION 0x1
+#define TRILL_NL_FAMILY "TRILL_NL"
+#define TRILL_MCAST_NAME "TR_NL_MCAST"
+#define TRILL_MCGRP_OFFSET 0
+
+struct trill_nl_header {
+ int ifindex; /* port id */
+ int total_length; /* message total length for mutipart messages check */
+ int msg_number; /* message number for multipart messages check */
+};
+
+enum {
+ TRILL_ATTR_UNSPEC,
+ TRILL_ATTR_U16,
+ TRILL_ATTR_BIN,
+ __TRILL_ATTR_MAX,
+};
+#define TRILL_ATTR_MAX (__TRILL_ATTR_MAX-1)
+
+/* GET and set are from user space perspective example TRILL_CMD_GET_BRIDGE
+ * means that the kernel will send this bridge name to userspace
+ */
+enum {
+ TRILL_CMD_UNSPEC,
+ TRILL_CMD_SET_NICKS_INFO,
+ TRILL_CMD_GET_NICKS_INFO,
+ TRILL_CMD_ADD_NICKS_INFO,
+ TRILL_CMD_DEL_NICK,
+ TRILL_CMD_SET_TREEROOT_ID,
+ TRILL_CMD_GET_RBRIDGE,
+ TRILL_CMD_SET_RBRIDGE,
+ TRILL_CMD_PORT_FLUSH,
+ TRILL_CMD_NICK_FLUSH,
+ __TRILL_CMD_MAX,
+};
+#define TRILL_CMD_MAX (__TRILL_CMD_MAX - 1)
+
+int __init rbridge_register_genl(void);
+void __exit rbridge_unregister_genl(void);
+
+/* used to indicate that message is provided by kernel to user space */
+#define KERNL_RESPONSE_INTERFACE -1
+
+#endif /* RBR_NETLINK_H_ */
--
1.9.1
--
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