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can: initial support for network namespaces

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This patch adds initial support for network namespaces. The changes only
enable support in the CAN raw, proc and af_can code. GW and BCM still
have their checks that ensure that they are used only from the main
namespace.

The patch boils down to moving the global structures, i.e. the global
filter list and their /proc stats, into a per-namespace structure and passing
around the corresponding "struct net" in a lot of different places.

Changes since v1:
 - rebased on current HEAD (2bfe01e)
 - fixed overlong line

Signed-off-by: Mario Kicherer <dev@kicherer.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Mario Kicherer 2017-02-21 12:19:47 +01:00 • committed by Marc Kleine-Budde
parent dabf54dd1c
commit 8e8cda6d73
9 changed files with 242 additions and 179 deletions
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7
include/linux/can/core.h
View file

@ -45,12 +45,13 @@ struct can_proto {
extern int can_proto_register(const struct can_proto *cp);
extern void can_proto_unregister(const struct can_proto *cp);
int can_rx_register(struct net_device *dev, canid_t can_id, canid_t mask,
int can_rx_register(struct net *net, struct net_device *dev,
canid_t can_id, canid_t mask,
void (*func)(struct sk_buff *, void *),
void *data, char *ident, struct sock *sk);
extern void can_rx_unregister(struct net_device *dev, canid_t can_id,
canid_t mask,
extern void can_rx_unregister(struct net *net, struct net_device *dev,
canid_t can_id, canid_t mask,
void (*func)(struct sk_buff *, void *),
void *data);