diff options
| author |   Oliver Hartkopp <socketcan@hartkopp.net> | 2022-09-12 19:07:20 +0200 |
|---|---|---|
| committer |   Marc Kleine-Budde <mkl@pengutronix.de> | 2022-09-15 09:08:08 +0200 |
| commit | 467ef4c7b9d1c22ee64342804bf92549d765df14 (patch) | |
| tree | 9d8fc4832f3658d85761bc85f2166b1731ded134 /drivers/net/can/dev/skb.c | |
| parent | can: skb: unify skb CAN frame identification helpers (diff) | |
| download | linux-dev-467ef4c7b9d1c22ee64342804bf92549d765df14.tar.xz linux-dev-467ef4c7b9d1c22ee64342804bf92549d765df14.zip | |
can: skb: add skb CAN frame data length helpers
Add two helpers to retrieve the data length from CAN sk_buffs and prepare
the length information to be a uint16 value for the CAN XL support.
Acked-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/all/20220912170725.120748-3-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/can/dev/skb.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/net/can/dev/skb.c b/drivers/net/can/dev/skb.c index f457c94ba82f..b896e1ce3b47 100644 --- a/drivers/net/can/dev/skb.c +++ b/drivers/net/can/dev/skb.c @@ -91,8 +91,8 @@ int can_put_echo_skb(struct sk_buff *skb, struct net_device *dev, EXPORT_SYMBOL_GPL(can_put_echo_skb); struct sk_buff * -__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr, - unsigned int *frame_len_ptr) +__can_get_echo_skb(struct net_device *dev, unsigned int idx, + unsigned int *len_ptr, unsigned int *frame_len_ptr) { struct can_priv *priv = netdev_priv(dev); @@ -108,16 +108,12 @@ __can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr, */ struct sk_buff *skb = priv->echo_skb[idx]; struct can_skb_priv *can_skb_priv = can_skb_prv(skb); - struct canfd_frame *cf = (struct canfd_frame *)skb->data; if (skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) skb_tstamp_tx(skb, skb_hwtstamps(skb)); /* get the real payload length for netdev statistics */ - if (cf->can_id & CAN_RTR_FLAG) - *len_ptr = 0; - else - *len_ptr = cf->len; + *len_ptr = can_skb_get_data_len(skb); if (frame_len_ptr) *frame_len_ptr = can_skb_priv->frame_len; @@ -147,7 +143,7 @@ unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx, unsigned int *frame_len_ptr) { struct sk_buff *skb; - u8 len; + unsigned int len; skb = __can_get_echo_skb(dev, idx, &len, frame_len_ptr); if (!skb) |