forked from Minki/linux
can: add ability to allocate CANFD frame in skb data
This patch adds the ability of allocating a CANFD frame data structure in the skb data area. Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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@ -521,6 +521,30 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
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}
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EXPORT_SYMBOL_GPL(alloc_can_skb);
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struct sk_buff *alloc_canfd_skb(struct net_device *dev,
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struct canfd_frame **cfd)
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{
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struct sk_buff *skb;
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skb = netdev_alloc_skb(dev, sizeof(struct can_skb_priv) +
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sizeof(struct canfd_frame));
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if (unlikely(!skb))
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return NULL;
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skb->protocol = htons(ETH_P_CANFD);
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skb->pkt_type = PACKET_BROADCAST;
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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can_skb_reserve(skb);
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can_skb_prv(skb)->ifindex = dev->ifindex;
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*cfd = (struct canfd_frame *)skb_put(skb, sizeof(struct canfd_frame));
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memset(*cfd, 0, sizeof(struct canfd_frame));
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return skb;
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}
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EXPORT_SYMBOL_GPL(alloc_canfd_skb);
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struct sk_buff *alloc_can_err_skb(struct net_device *dev, struct can_frame **cf)
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{
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struct sk_buff *skb;
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@ -124,6 +124,8 @@ unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx);
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void can_free_echo_skb(struct net_device *dev, unsigned int idx);
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struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf);
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struct sk_buff *alloc_canfd_skb(struct net_device *dev,
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struct canfd_frame **cfd);
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struct sk_buff *alloc_can_err_skb(struct net_device *dev,
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struct can_frame **cf);
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