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authorMarc Kleine-Budde <mkl@pengutronix.de>2018-10-08 10:02:38 +0300
committerMarc Kleine-Budde <mkl@pengutronix.de>2019-09-04 14:29:14 +0300
commitffd956eef69b212a724b1cc4cdc61828f3ad9104 (patch)
treec5366f9a90ed84c736c32ddc03c854299f456cc9 /drivers/net/can/vcan.c
parent3f15035606934a499975e4a5879a9499f072c179 (diff)
downloadlinux-ffd956eef69b212a724b1cc4cdc61828f3ad9104.tar.xz
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.c6
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)