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Merge branch 'l2tp-module-autoloading'

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Stephen Hemminger says:

====================
l2tp: module autoloading

With L2TP it was necessary to manually load modules
which is a nuisance and not required with other tunneling
protocols. This set of patches adds the aliases and module
load hook to get rid of the necessity of modprobing.
====================

Acked-By: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2015-09-25 12:27:23 -07:00
parent f37db85d0c 008aa6a4fa
commit 119e359c6f
7 changed files with 16 additions and 5 deletions
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7
Documentation/networking/l2tp.txt
View file

@ -213,15 +213,12 @@ To create an L2TPv3 ethernet pseudowire between local host 192.168.1.1
and peer 192.168.1.2, using IP addresses 10.5.1.1 and 10.5.1.2 for the
tunnel endpoints:-
# modprobe l2tp_eth
# modprobe l2tp_netlink
# ip l2tp add tunnel tunnel_id 1 peer_tunnel_id 1 udp_sport 5000 \
udp_dport 5000 encap udp local 192.168.1.1 remote 192.168.1.2
# ip l2tp add session tunnel_id 1 session_id 1 peer_session_id 1
# ifconfig -a
# ip -s -d show dev l2tpeth0
# ip addr add 10.5.1.2/32 peer 10.5.1.1/32 dev l2tpeth0
# ifconfig l2tpeth0 up
# ip li set dev l2tpeth0 up
Choose IP addresses to be the address of a local IP interface and that
of the remote system. The IP addresses of the l2tpeth0 interface can be

3
net/l2tp/l2tp_core.h
View file

@ -321,4 +321,7 @@ do { \
#define l2tp_dbg(ptr, type, fmt, ...) \
l2tp_printk(ptr, type, pr_debug, fmt, ##__VA_ARGS__)
#define MODULE_ALIAS_L2TP_PWTYPE(type) \
MODULE_ALIAS("net-l2tp-type-" __stringify(type))
#endif /* _L2TP_CORE_H_ */

1
net/l2tp/l2tp_eth.c
View file

@ -358,3 +358,4 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("James Chapman <jchapman@katalix.com>");
MODULE_DESCRIPTION("L2TP ethernet pseudowire driver");
MODULE_VERSION("1.0");
MODULE_ALIAS_L2TP_PWTYPE(5);

1
net/l2tp/l2tp_ip.c
View file

@ -655,3 +655,4 @@ MODULE_VERSION("1.0");
* enums
*/
MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 2, IPPROTO_L2TP);
MODULE_ALIAS_NET_PF_PROTO(PF_INET, IPPROTO_L2TP);

1
net/l2tp/l2tp_ip6.c
View file

@ -801,3 +801,4 @@ MODULE_VERSION("1.0");
* enums
*/
MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET6, 2, IPPROTO_L2TP);
MODULE_ALIAS_NET_PF_PROTO(PF_INET6, IPPROTO_L2TP);

7
net/l2tp/l2tp_netlink.c
View file

@ -576,6 +576,13 @@ static int l2tp_nl_cmd_session_create(struct sk_buff *skb, struct genl_info *inf
if (info->attrs[L2TP_ATTR_MRU])
cfg.mru = nla_get_u16(info->attrs[L2TP_ATTR_MRU]);
#ifdef CONFIG_MODULES
if (l2tp_nl_cmd_ops[cfg.pw_type] == NULL) {
genl_unlock();
request_module("net-l2tp-type-%u", cfg.pw_type);
genl_lock();
}
#endif
if ((l2tp_nl_cmd_ops[cfg.pw_type] == NULL) ||
(l2tp_nl_cmd_ops[cfg.pw_type]->session_create == NULL)) {
ret = -EPROTONOSUPPORT;

1
net/l2tp/l2tp_ppp.c
View file

@ -1863,3 +1863,4 @@ MODULE_DESCRIPTION("PPP over L2TP over UDP");
MODULE_LICENSE("GPL");
MODULE_VERSION(PPPOL2TP_DRV_VERSION);
MODULE_ALIAS("pppox-proto-" __stringify(PX_PROTO_OL2TP));
MODULE_ALIAS_L2TP_PWTYPE(11);