[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/scsi/scsi_netlink.c b/src/kernel/linux/v4.14/drivers/scsi/scsi_netlink.c
new file mode 100644
index 0000000..50e624f
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/scsi/scsi_netlink.c
@@ -0,0 +1,158 @@
+/*
+ * scsi_netlink.c - SCSI Transport Netlink Interface
+ *
+ * Copyright (C) 2006 James Smart, Emulex Corporation
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#include <linux/time.h>
+#include <linux/jiffies.h>
+#include <linux/security.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+#include <net/sock.h>
+#include <net/netlink.h>
+
+#include <scsi/scsi_netlink.h>
+#include "scsi_priv.h"
+
+struct sock *scsi_nl_sock = NULL;
+EXPORT_SYMBOL_GPL(scsi_nl_sock);
+
+/**
+ * scsi_nl_rcv_msg - Receive message handler.
+ * @skb: socket receive buffer
+ *
+ * Description: Extracts message from a receive buffer.
+ * Validates message header and calls appropriate transport message handler
+ *
+ *
+ **/
+static void
+scsi_nl_rcv_msg(struct sk_buff *skb)
+{
+ struct nlmsghdr *nlh;
+ struct scsi_nl_hdr *hdr;
+ u32 rlen;
+ int err, tport;
+
+ while (skb->len >= NLMSG_HDRLEN) {
+ err = 0;
+
+ nlh = nlmsg_hdr(skb);
+ if ((nlh->nlmsg_len < (sizeof(*nlh) + sizeof(*hdr))) ||
+ (skb->len < nlh->nlmsg_len)) {
+ printk(KERN_WARNING "%s: discarding partial skb\n",
+ __func__);
+ return;
+ }
+
+ rlen = NLMSG_ALIGN(nlh->nlmsg_len);
+ if (rlen > skb->len)
+ rlen = skb->len;
+
+ if (nlh->nlmsg_type != SCSI_TRANSPORT_MSG) {
+ err = -EBADMSG;
+ goto next_msg;
+ }
+
+ hdr = nlmsg_data(nlh);
+ if ((hdr->version != SCSI_NL_VERSION) ||
+ (hdr->magic != SCSI_NL_MAGIC)) {
+ err = -EPROTOTYPE;
+ goto next_msg;
+ }
+
+ if (!netlink_capable(skb, CAP_SYS_ADMIN)) {
+ err = -EPERM;
+ goto next_msg;
+ }
+
+ if (nlh->nlmsg_len < (sizeof(*nlh) + hdr->msglen)) {
+ printk(KERN_WARNING "%s: discarding partial message\n",
+ __func__);
+ goto next_msg;
+ }
+
+ /*
+ * Deliver message to the appropriate transport
+ */
+ tport = hdr->transport;
+ if (tport == SCSI_NL_TRANSPORT) {
+ switch (hdr->msgtype) {
+ case SCSI_NL_SHOST_VENDOR:
+ /* Locate the driver that corresponds to the message */
+ err = -ESRCH;
+ break;
+ default:
+ err = -EBADR;
+ break;
+ }
+ if (err)
+ printk(KERN_WARNING "%s: Msgtype %d failed - err %d\n",
+ __func__, hdr->msgtype, err);
+ }
+ else
+ err = -ENOENT;
+
+next_msg:
+ if ((err) || (nlh->nlmsg_flags & NLM_F_ACK))
+ netlink_ack(skb, nlh, err, NULL);
+
+ skb_pull(skb, rlen);
+ }
+}
+
+/**
+ * scsi_netlink_init - Called by SCSI subsystem to initialize
+ * the SCSI transport netlink interface
+ *
+ **/
+void
+scsi_netlink_init(void)
+{
+ struct netlink_kernel_cfg cfg = {
+ .input = scsi_nl_rcv_msg,
+ .groups = SCSI_NL_GRP_CNT,
+ };
+
+ scsi_nl_sock = netlink_kernel_create(&init_net, NETLINK_SCSITRANSPORT,
+ &cfg);
+ if (!scsi_nl_sock) {
+ printk(KERN_ERR "%s: register of receive handler failed\n",
+ __func__);
+ return;
+ }
+
+ return;
+}
+
+
+/**
+ * scsi_netlink_exit - Called by SCSI subsystem to disable the SCSI transport netlink interface
+ *
+ **/
+void
+scsi_netlink_exit(void)
+{
+ if (scsi_nl_sock) {
+ netlink_kernel_release(scsi_nl_sock);
+ }
+
+ return;
+}
+