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	…
Makefile	…
l2tp_core.c	l2tp: Allow duplicate session creation with UDP	2020-02-11 04:35:04 -08:00
l2tp_core.h	…
l2tp_debugfs.c	…
l2tp_eth.c	…
l2tp_ip.c	…
l2tp_ip6.c	…
l2tp_netlink.c	l2tp: Allow management of tunnels and session in user namespace	2020-04-21 09:04:44 +02:00
l2tp_ppp.c	…