diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/um/os-Linux/drivers/ethertap_kern.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (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/os-Linux/drivers/ethertap_kern.c')
-rw-r--r-- | kernel/arch/um/os-Linux/drivers/ethertap_kern.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/kernel/arch/um/os-Linux/drivers/ethertap_kern.c b/kernel/arch/um/os-Linux/drivers/ethertap_kern.c new file mode 100644 index 000000000..f424600a5 --- /dev/null +++ b/kernel/arch/um/os-Linux/drivers/ethertap_kern.c @@ -0,0 +1,100 @@ +/* + * 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 "etap.h" +#include <net_kern.h> + +struct ethertap_init { + char *dev_name; + char *gate_addr; +}; + +static void etap_init(struct net_device *dev, void *data) +{ + struct uml_net_private *pri; + struct ethertap_data *epri; + struct ethertap_init *init = data; + + pri = netdev_priv(dev); + epri = (struct ethertap_data *) pri->user; + epri->dev_name = init->dev_name; + epri->gate_addr = init->gate_addr; + epri->data_fd = -1; + epri->control_fd = -1; + epri->dev = dev; + + printk(KERN_INFO "ethertap backend - %s", epri->dev_name); + if (epri->gate_addr != NULL) + printk(KERN_CONT ", IP = %s", epri->gate_addr); + printk(KERN_CONT "\n"); +} + +static int etap_read(int fd, struct sk_buff *skb, struct uml_net_private *lp) +{ + int len; + + len = net_recvfrom(fd, skb_mac_header(skb), + skb->dev->mtu + 2 + ETH_HEADER_ETHERTAP); + if (len <= 0) + return(len); + + skb_pull(skb, 2); + len -= 2; + return len; +} + +static int etap_write(int fd, struct sk_buff *skb, struct uml_net_private *lp) +{ + skb_push(skb, 2); + return net_send(fd, skb->data, skb->len); +} + +const struct net_kern_info ethertap_kern_info = { + .init = etap_init, + .protocol = eth_protocol, + .read = etap_read, + .write = etap_write, +}; + +int ethertap_setup(char *str, char **mac_out, void *data) +{ + struct ethertap_init *init = data; + + *init = ((struct ethertap_init) + { .dev_name = NULL, + .gate_addr = NULL }); + if (tap_setup_common(str, "ethertap", &init->dev_name, mac_out, + &init->gate_addr)) + return 0; + if (init->dev_name == NULL) { + printk(KERN_ERR "ethertap_setup : Missing tap device name\n"); + return 0; + } + + return 1; +} + +static struct transport ethertap_transport = { + .list = LIST_HEAD_INIT(ethertap_transport.list), + .name = "ethertap", + .setup = ethertap_setup, + .user = ðertap_user_info, + .kern = ðertap_kern_info, + .private_size = sizeof(struct ethertap_data), + .setup_size = sizeof(struct ethertap_init), +}; + +static int register_ethertap(void) +{ + register_transport(ðertap_transport); + return 0; +} + +late_initcall(register_ethertap); |