Michael Weiß 016e3531d5 l2tp: Allow management of tunnels and session in user namespace ... [ Upstream commit 2abe05234f ] Creation and management of L2TPv3 tunnels and session through netlink requires CAP_NET_ADMIN. However, a process with CAP_NET_ADMIN in a non-initial user namespace gets an EPERM due to the use of the genetlink GENL_ADMIN_PERM flag. Thus, management of L2TP VPNs inside an unprivileged container won't work. We replaced the GENL_ADMIN_PERM by the GENL_UNS_ADMIN_PERM flag similar to other network modules which also had this problem, e.g., openvswitch (commit 4a92602aa1 "openvswitch: allow management from inside user namespaces") and nl80211 (commit 5617c6cd6f "nl80211: Allow privileged operations from user namespaces"). I tested this in the container runtime trustm3 (trustm3.github.io) and was able to create l2tp tunnels and sessions in unpriviliged (user namespaced) containers using a private network namespace. For other runtimes such as docker or lxc this should work, too. Signed-off-by: Michael Weiß <michael.weiss@aisec.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-04-21 09:04:44 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
l2tp_core.c	l2tp: Allow duplicate session creation with UDP	2020-02-11 04:35:04 -08:00
l2tp_core.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
l2tp_debugfs.c	l2tp: no need to check return value of debugfs_create functions	2019-06-14 08:45:05 -07:00
l2tp_eth.c	net: core: add generic lockdep keys	2019-10-24 14:53:48 -07:00
l2tp_ip.c	netfilter: drop bridge nf reset from nf_reset	2019-10-01 18:42:15 +02:00
l2tp_ip6.c	net: ipv6: add net argument to ip6_dst_lookup_flow	2019-12-18 16:08:40 +01:00
l2tp_netlink.c	l2tp: Allow management of tunnels and session in user namespace	2020-04-21 09:04:44 +02:00
l2tp_ppp.c	compat_ioctl: pppoe: fix PPPOEIOCSFWD handling	2019-07-30 14:42:13 -07:00