diff options
| author | Stephane Grosjean <s.grosjean@peak-system.com> | 2014-01-15 08:50:13 (GMT) |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2014-02-04 08:34:33 (GMT) |
| commit | cb2518ca9f06dfcfa3d175773631bfb1e461bdc7 (patch) | |
| tree | 862c310c2fd5b765526ec112ae12c508e4fdab65 | |
| parent | 16f6b87ac524f073c93ea3caadfd5111d03ecb4f (diff) | |
| download | linux-cb2518ca9f06dfcfa3d175773631bfb1e461bdc7.tar.xz | |
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>
| -rw-r--r-- | drivers/net/can/dev.c | 24 | ||||
| -rw-r--r-- | include/linux/can/dev.h | 2 |
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index 13a9098..cb584ea 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -521,6 +521,30 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf) } EXPORT_SYMBOL_GPL(alloc_can_skb); +struct sk_buff *alloc_canfd_skb(struct net_device *dev, + struct canfd_frame **cfd) +{ + struct sk_buff *skb; + + skb = netdev_alloc_skb(dev, sizeof(struct can_skb_priv) + + sizeof(struct canfd_frame)); + if (unlikely(!skb)) + return NULL; + + skb->protocol = htons(ETH_P_CANFD); + skb->pkt_type = PACKET_BROADCAST; + skb->ip_summed = CHECKSUM_UNNECESSARY; + + can_skb_reserve(skb); + can_skb_prv(skb)->ifindex = dev->ifindex; + + *cfd = (struct canfd_frame *)skb_put(skb, sizeof(struct canfd_frame)); + memset(*cfd, 0, sizeof(struct canfd_frame)); + + return skb; +} +EXPORT_SYMBOL_GPL(alloc_canfd_skb); + struct sk_buff *alloc_can_err_skb(struct net_device *dev, struct can_frame **cf) { struct sk_buff *skb; diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h index fb0ab65..dc5f902 100644 --- a/include/linux/can/dev.h +++ b/include/linux/can/dev.h @@ -124,6 +124,8 @@ unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx); void can_free_echo_skb(struct net_device *dev, unsigned int idx); struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf); +struct sk_buff *alloc_canfd_skb(struct net_device *dev, + struct canfd_frame **cfd); struct sk_buff *alloc_can_err_skb(struct net_device *dev, struct can_frame **cf); |