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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/drivers/slirp_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/drivers/slirp_kern.c')
-rw-r--r-- | kernel/arch/um/drivers/slirp_kern.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/kernel/arch/um/drivers/slirp_kern.c b/kernel/arch/um/drivers/slirp_kern.c new file mode 100644 index 000000000..4ef11ca7c --- /dev/null +++ b/kernel/arch/um/drivers/slirp_kern.c @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL. + */ + +#include <linux/if_arp.h> +#include <linux/init.h> +#include <linux/netdevice.h> +#include <linux/string.h> +#include <net_kern.h> +#include <net_user.h> +#include "slirp.h" + +struct slirp_init { + struct arg_list_dummy_wrapper argw; /* XXX should be simpler... */ +}; + +void slirp_init(struct net_device *dev, void *data) +{ + struct uml_net_private *private; + struct slirp_data *spri; + struct slirp_init *init = data; + int i; + + private = netdev_priv(dev); + spri = (struct slirp_data *) private->user; + + spri->argw = init->argw; + spri->pid = -1; + spri->slave = -1; + spri->dev = dev; + + slip_proto_init(&spri->slip); + + dev->hard_header_len = 0; + dev->header_ops = NULL; + dev->addr_len = 0; + dev->type = ARPHRD_SLIP; + dev->tx_queue_len = 256; + dev->flags = IFF_NOARP; + printk("SLIRP backend - command line:"); + for (i = 0; spri->argw.argv[i] != NULL; i++) + printk(" '%s'",spri->argw.argv[i]); + printk("\n"); +} + +static unsigned short slirp_protocol(struct sk_buff *skbuff) +{ + return htons(ETH_P_IP); +} + +static int slirp_read(int fd, struct sk_buff *skb, struct uml_net_private *lp) +{ + return slirp_user_read(fd, skb_mac_header(skb), skb->dev->mtu, + (struct slirp_data *) &lp->user); +} + +static int slirp_write(int fd, struct sk_buff *skb, struct uml_net_private *lp) +{ + return slirp_user_write(fd, skb->data, skb->len, + (struct slirp_data *) &lp->user); +} + +const struct net_kern_info slirp_kern_info = { + .init = slirp_init, + .protocol = slirp_protocol, + .read = slirp_read, + .write = slirp_write, +}; + +static int slirp_setup(char *str, char **mac_out, void *data) +{ + struct slirp_init *init = data; + int i=0; + + *init = ((struct slirp_init) { .argw = { { "slirp", NULL } } }); + + str = split_if_spec(str, mac_out, NULL); + + if (str == NULL) /* no command line given after MAC addr */ + return 1; + + do { + if (i >= SLIRP_MAX_ARGS - 1) { + printk(KERN_WARNING "slirp_setup: truncating slirp " + "arguments\n"); + break; + } + init->argw.argv[i++] = str; + while(*str && *str!=',') { + if (*str == '_') + *str=' '; + str++; + } + if (*str != ',') + break; + *str++ = '\0'; + } while (1); + + init->argw.argv[i] = NULL; + return 1; +} + +static struct transport slirp_transport = { + .list = LIST_HEAD_INIT(slirp_transport.list), + .name = "slirp", + .setup = slirp_setup, + .user = &slirp_user_info, + .kern = &slirp_kern_info, + .private_size = sizeof(struct slirp_data), + .setup_size = sizeof(struct slirp_init), +}; + +static int register_slirp(void) +{ + register_transport(&slirp_transport); + return 0; +} + +late_initcall(register_slirp); |