diff options
author | 2015-08-04 12:17:53 -0700 | |
---|---|---|
committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/net/ppp/pppox.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/drivers/net/ppp/pppox.c')
-rw-r--r-- | kernel/drivers/net/ppp/pppox.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/kernel/drivers/net/ppp/pppox.c b/kernel/drivers/net/ppp/pppox.c new file mode 100644 index 000000000..2940e9fe3 --- /dev/null +++ b/kernel/drivers/net/ppp/pppox.c @@ -0,0 +1,149 @@ +/** -*- linux-c -*- *********************************************************** + * Linux PPP over X/Ethernet (PPPoX/PPPoE) Sockets + * + * PPPoX --- Generic PPP encapsulation socket family + * PPPoE --- PPP over Ethernet (RFC 2516) + * + * + * Version: 0.5.2 + * + * Author: Michal Ostrowski <mostrows@speakeasy.net> + * + * 051000 : Initialization cleanup + * + * License: + * 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. + * + */ + +#include <linux/string.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/netdevice.h> +#include <linux/net.h> +#include <linux/init.h> +#include <linux/if_pppox.h> +#include <linux/ppp_defs.h> +#include <linux/ppp-ioctl.h> +#include <linux/ppp_channel.h> +#include <linux/kmod.h> + +#include <net/sock.h> + +#include <asm/uaccess.h> + +static const struct pppox_proto *pppox_protos[PX_MAX_PROTO + 1]; + +int register_pppox_proto(int proto_num, const struct pppox_proto *pp) +{ + if (proto_num < 0 || proto_num > PX_MAX_PROTO) + return -EINVAL; + if (pppox_protos[proto_num]) + return -EALREADY; + pppox_protos[proto_num] = pp; + return 0; +} + +void unregister_pppox_proto(int proto_num) +{ + if (proto_num >= 0 && proto_num <= PX_MAX_PROTO) + pppox_protos[proto_num] = NULL; +} + +void pppox_unbind_sock(struct sock *sk) +{ + /* Clear connection to ppp device, if attached. */ + + if (sk->sk_state & (PPPOX_BOUND | PPPOX_CONNECTED | PPPOX_ZOMBIE)) { + ppp_unregister_channel(&pppox_sk(sk)->chan); + sk->sk_state = PPPOX_DEAD; + } +} + +EXPORT_SYMBOL(register_pppox_proto); +EXPORT_SYMBOL(unregister_pppox_proto); +EXPORT_SYMBOL(pppox_unbind_sock); + +int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) +{ + struct sock *sk = sock->sk; + struct pppox_sock *po = pppox_sk(sk); + int rc; + + lock_sock(sk); + + switch (cmd) { + case PPPIOCGCHAN: { + int index; + rc = -ENOTCONN; + if (!(sk->sk_state & PPPOX_CONNECTED)) + break; + + rc = -EINVAL; + index = ppp_channel_index(&po->chan); + if (put_user(index , (int __user *) arg)) + break; + + rc = 0; + sk->sk_state |= PPPOX_BOUND; + break; + } + default: + rc = pppox_protos[sk->sk_protocol]->ioctl ? + pppox_protos[sk->sk_protocol]->ioctl(sock, cmd, arg) : -ENOTTY; + } + + release_sock(sk); + return rc; +} + +EXPORT_SYMBOL(pppox_ioctl); + +static int pppox_create(struct net *net, struct socket *sock, int protocol, + int kern) +{ + int rc = -EPROTOTYPE; + + if (protocol < 0 || protocol > PX_MAX_PROTO) + goto out; + + rc = -EPROTONOSUPPORT; + if (!pppox_protos[protocol]) + request_module("pppox-proto-%d", protocol); + if (!pppox_protos[protocol] || + !try_module_get(pppox_protos[protocol]->owner)) + goto out; + + rc = pppox_protos[protocol]->create(net, sock); + + module_put(pppox_protos[protocol]->owner); +out: + return rc; +} + +static const struct net_proto_family pppox_proto_family = { + .family = PF_PPPOX, + .create = pppox_create, + .owner = THIS_MODULE, +}; + +static int __init pppox_init(void) +{ + return sock_register(&pppox_proto_family); +} + +static void __exit pppox_exit(void) +{ + sock_unregister(PF_PPPOX); +} + +module_init(pppox_init); +module_exit(pppox_exit); + +MODULE_AUTHOR("Michal Ostrowski <mostrows@speakeasy.net>"); +MODULE_DESCRIPTION("PPP over Ethernet driver (generic socket layer)"); +MODULE_LICENSE("GPL"); |