[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/dlm/netlink.c b/src/kernel/linux/v4.14/fs/dlm/netlink.c
new file mode 100644
index 0000000..43a96c3
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/dlm/netlink.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2007 Red Hat, Inc. All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ */
+
+#include <net/genetlink.h>
+#include <linux/dlm.h>
+#include <linux/dlm_netlink.h>
+#include <linux/gfp.h>
+
+#include "dlm_internal.h"
+
+static uint32_t dlm_nl_seqnum;
+static uint32_t listener_nlportid;
+
+static struct genl_family family;
+
+static int prepare_data(u8 cmd, struct sk_buff **skbp, size_t size)
+{
+ struct sk_buff *skb;
+ void *data;
+
+ skb = genlmsg_new(size, GFP_NOFS);
+ if (!skb)
+ return -ENOMEM;
+
+ /* add the message headers */
+ data = genlmsg_put(skb, 0, dlm_nl_seqnum++, &family, 0, cmd);
+ if (!data) {
+ nlmsg_free(skb);
+ return -EINVAL;
+ }
+
+ *skbp = skb;
+ return 0;
+}
+
+static struct dlm_lock_data *mk_data(struct sk_buff *skb)
+{
+ struct nlattr *ret;
+
+ ret = nla_reserve(skb, DLM_TYPE_LOCK, sizeof(struct dlm_lock_data));
+ if (!ret)
+ return NULL;
+ return nla_data(ret);
+}
+
+static int send_data(struct sk_buff *skb)
+{
+ struct genlmsghdr *genlhdr = nlmsg_data((struct nlmsghdr *)skb->data);
+ void *data = genlmsg_data(genlhdr);
+
+ genlmsg_end(skb, data);
+
+ return genlmsg_unicast(&init_net, skb, listener_nlportid);
+}
+
+static int user_cmd(struct sk_buff *skb, struct genl_info *info)
+{
+ listener_nlportid = info->snd_portid;
+ printk("user_cmd nlpid %u\n", listener_nlportid);
+ return 0;
+}
+
+static const struct genl_ops dlm_nl_ops[] = {
+ {
+ .cmd = DLM_CMD_HELLO,
+ .doit = user_cmd,
+ },
+};
+
+static struct genl_family family __ro_after_init = {
+ .name = DLM_GENL_NAME,
+ .version = DLM_GENL_VERSION,
+ .ops = dlm_nl_ops,
+ .n_ops = ARRAY_SIZE(dlm_nl_ops),
+ .module = THIS_MODULE,
+};
+
+int __init dlm_netlink_init(void)
+{
+ return genl_register_family(&family);
+}
+
+void dlm_netlink_exit(void)
+{
+ genl_unregister_family(&family);
+}
+
+static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb)
+{
+ struct dlm_rsb *r = lkb->lkb_resource;
+
+ memset(data, 0, sizeof(struct dlm_lock_data));
+
+ data->version = DLM_LOCK_DATA_VERSION;
+ data->nodeid = lkb->lkb_nodeid;
+ data->ownpid = lkb->lkb_ownpid;
+ data->id = lkb->lkb_id;
+ data->remid = lkb->lkb_remid;
+ data->status = lkb->lkb_status;
+ data->grmode = lkb->lkb_grmode;
+ data->rqmode = lkb->lkb_rqmode;
+ if (lkb->lkb_ua)
+ data->xid = lkb->lkb_ua->xid;
+ if (r) {
+ data->lockspace_id = r->res_ls->ls_global_id;
+ data->resource_namelen = r->res_length;
+ memcpy(data->resource_name, r->res_name, r->res_length);
+ }
+}
+
+void dlm_timeout_warn(struct dlm_lkb *lkb)
+{
+ struct sk_buff *uninitialized_var(send_skb);
+ struct dlm_lock_data *data;
+ size_t size;
+ int rv;
+
+ size = nla_total_size(sizeof(struct dlm_lock_data)) +
+ nla_total_size(0); /* why this? */
+
+ rv = prepare_data(DLM_CMD_TIMEOUT, &send_skb, size);
+ if (rv < 0)
+ return;
+
+ data = mk_data(send_skb);
+ if (!data) {
+ nlmsg_free(send_skb);
+ return;
+ }
+
+ fill_data(data, lkb);
+
+ send_data(send_skb);
+}
+