diff options
| author | Vincent Mailhol <mailhol.vincent@wanadoo.fr> | 2021-01-11 17:19:27 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-01-14 10:43:43 +0300 |
| commit | 1dcb6e57db833419483d0df2d956b1cc2a802683 (patch) | |
| tree | 74fb05db22febf0dcc26db16ce80e49da8933b4a /drivers/net/can/dev | |
| parent | f0ef72febc9a6a569d92cdf6c7996015dfa8e8bb (diff) | |
| download | linux-1dcb6e57db833419483d0df2d956b1cc2a802683.tar.xz | |
can: dev: can_put_echo_skb(): extend to handle frame_len
Add a frame_len argument to can_put_echo_skb() which is used to save length of
the CAN frame into field frame_len of struct can_skb_priv so that it can be
later used after transmission completion. Convert all users of this function,
too.
Drivers which implement BQL call can_put_echo_skb() with the output of
can_skb_get_frame_len(skb) and drivers which do not simply pass zero as an
input (in the same way that NULL would be given to can_get_echo_skb()). This
way, we have a nice symmetry between the two echo functions.
Link: https://lore.kernel.org/r/20210111061335.39983-1-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/r/20210111141930.693847-13-mkl@pengutronix.de
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Diffstat (limited to 'drivers/net/can/dev')
| -rw-r--r-- | drivers/net/can/dev/skb.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/can/dev/skb.c b/drivers/net/can/dev/skb.c index 24f782a23409..c184b4dce19e 100644 --- a/drivers/net/can/dev/skb.c +++ b/drivers/net/can/dev/skb.c @@ -38,7 +38,7 @@ void can_flush_echo_skb(struct net_device *dev) * priv->echo_skb, if necessary. */ int can_put_echo_skb(struct sk_buff *skb, struct net_device *dev, - unsigned int idx) + unsigned int idx, unsigned int frame_len) { struct can_priv *priv = netdev_priv(dev); @@ -62,6 +62,9 @@ int can_put_echo_skb(struct sk_buff *skb, struct net_device *dev, skb->ip_summed = CHECKSUM_UNNECESSARY; skb->dev = dev; + /* save frame_len to reuse it when transmission is completed */ + can_skb_prv(skb)->frame_len = frame_len; + /* save this skb for tx interrupt echo handling */ priv->echo_skb[idx] = skb; } else { |