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| author |   Marc Kleine-Budde <mkl@pengutronix.de> | 2018-10-08 09:02:38 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2019-09-04 13:29:14 +0200 |
| commit | ffd956eef69b212a724b1cc4cdc61828f3ad9104 (patch) | |
| tree | c5366f9a90ed84c736c32ddc03c854299f456cc9 /drivers/net/can/vcan.c | |
| parent | can: af_can: can_pernet_exit(): no need to iterate over and cleanup registered CAN devices (diff) | |
| download | linux-dev-ffd956eef69b212a724b1cc4cdc61828f3ad9104.tar.xz linux-dev-ffd956eef69b212a724b1cc4cdc61828f3ad9104.zip | |
can: introduce CAN midlayer private and allocate it automatically
This patch introduces the CAN midlayer private structure ("struct
can_ml_priv") which should be used to hold protocol specific per device
data structures. For now it's only member is "struct can_dev_rcv_lists".
The CAN midlayer private is allocated via alloc_netdev()'s private and
assigned to "struct net_device::ml_priv" during device creation. This is
done transparently for CAN drivers using alloc_candev(). The slcan, vcan
and vxcan drivers which are not using alloc_candev() have been adopted
manually. The memory layout of the netdev_priv allocated via
alloc_candev() will looke like this:
+-------------------------+
| driver's priv |
+-------------------------+
| struct can_ml_priv |
+-------------------------+
| array of struct sk_buff |
+-------------------------+
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/vcan.c')
| -rw-r--r-- | drivers/net/can/vcan.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/can/vcan.c b/drivers/net/can/vcan.c index daf27133887b..6973ae09a37a 100644 --- a/drivers/net/can/vcan.c +++ b/drivers/net/can/vcan.c @@ -46,6 +46,7 @@ #include <linux/if_arp.h> #include <linux/if_ether.h> #include <linux/can.h> +#include <linux/can/can-ml.h> #include <linux/can/dev.h> #include <linux/can/skb.h> #include <linux/slab.h> @@ -162,8 +163,9 @@ static void vcan_setup(struct net_device *dev) } static struct rtnl_link_ops vcan_link_ops __read_mostly = { - .kind = DRV_NAME, - .setup = vcan_setup, + .kind = DRV_NAME, + .priv_size = sizeof(struct can_ml_priv), + .setup = vcan_setup, }; static __init int vcan_init_module(void) |