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can: rework skb reserved data handling

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Added accessor and skb_reserve helpers for struct can_skb_priv.
Removed pointless skb_headroom() check.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
CC: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oliver Hartkopp
2013-01-28 08:33:33 +00:00
committed by David S. Miller
parent cef401de7b
commit 2bf3440d7b
6 changed files with 21 additions and 13 deletions
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4
drivers/net/can/dev.c
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@@ -512,8 +512,8 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
skb->pkt_type = PACKET_BROADCAST;
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb_reserve(skb, sizeof(struct can_skb_priv));
((struct can_skb_priv *)(skb->head))->ifindex = dev->ifindex;
can_skb_reserve(skb);
can_skb_prv(skb)->ifindex = dev->ifindex;
*cf = (struct can_frame *)skb_put(skb, sizeof(struct can_frame));
memset(*cf, 0, sizeof(struct can_frame));