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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/um/drivers/daemon_kern.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/um/drivers/daemon_kern.c')
-rw-r--r--kernel/arch/um/drivers/daemon_kern.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/kernel/arch/um/drivers/daemon_kern.c b/kernel/arch/um/drivers/daemon_kern.c
new file mode 100644
index 000000000..7568cc2f3
--- /dev/null
+++ b/kernel/arch/um/drivers/daemon_kern.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2001 Lennert Buytenhek (buytenh@gnu.org) and
+ * James Leu (jleu@mindspring.net).
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Copyright (C) 2001 by various other people who didn't put their name here.
+ * Licensed under the GPL.
+ */
+
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <net_kern.h>
+#include "daemon.h"
+
+struct daemon_init {
+ char *sock_type;
+ char *ctl_sock;
+};
+
+static void daemon_init(struct net_device *dev, void *data)
+{
+ struct uml_net_private *pri;
+ struct daemon_data *dpri;
+ struct daemon_init *init = data;
+
+ pri = netdev_priv(dev);
+ dpri = (struct daemon_data *) pri->user;
+ dpri->sock_type = init->sock_type;
+ dpri->ctl_sock = init->ctl_sock;
+ dpri->fd = -1;
+ dpri->control = -1;
+ dpri->dev = dev;
+ /* We will free this pointer. If it contains crap we're burned. */
+ dpri->ctl_addr = NULL;
+ dpri->data_addr = NULL;
+ dpri->local_addr = NULL;
+
+ printk("daemon backend (uml_switch version %d) - %s:%s",
+ SWITCH_VERSION, dpri->sock_type, dpri->ctl_sock);
+ printk("\n");
+}
+
+static int daemon_read(int fd, struct sk_buff *skb, struct uml_net_private *lp)
+{
+ return net_recvfrom(fd, skb_mac_header(skb),
+ skb->dev->mtu + ETH_HEADER_OTHER);
+}
+
+static int daemon_write(int fd, struct sk_buff *skb, struct uml_net_private *lp)
+{
+ return daemon_user_write(fd, skb->data, skb->len,
+ (struct daemon_data *) &lp->user);
+}
+
+static const struct net_kern_info daemon_kern_info = {
+ .init = daemon_init,
+ .protocol = eth_protocol,
+ .read = daemon_read,
+ .write = daemon_write,
+};
+
+static int daemon_setup(char *str, char **mac_out, void *data)
+{
+ struct daemon_init *init = data;
+ char *remain;
+
+ *init = ((struct daemon_init)
+ { .sock_type = "unix",
+ .ctl_sock = "/tmp/uml.ctl" });
+
+ remain = split_if_spec(str, mac_out, &init->sock_type, &init->ctl_sock,
+ NULL);
+ if (remain != NULL)
+ printk(KERN_WARNING "daemon_setup : Ignoring data socket "
+ "specification\n");
+
+ return 1;
+}
+
+static struct transport daemon_transport = {
+ .list = LIST_HEAD_INIT(daemon_transport.list),
+ .name = "daemon",
+ .setup = daemon_setup,
+ .user = &daemon_user_info,
+ .kern = &daemon_kern_info,
+ .private_size = sizeof(struct daemon_data),
+ .setup_size = sizeof(struct daemon_init),
+};
+
+static int register_daemon(void)
+{
+ register_transport(&daemon_transport);
+ return 0;
+}
+
+late_initcall(register_daemon);