can: Unify droping of invalid tx skbs and netdev stats
To prevent the CAN drivers to operate on invalid socketbuffers the skbs are
now checked and silently dropped at the xmit-function consistently.
Also the netdev stats are consistently using the CAN data length code (dlc)
for [rx|tx]_bytes now.
Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c
index 1a72ca0..afa2fa4 100644
--- a/drivers/net/can/mcp251x.c
+++ b/drivers/net/can/mcp251x.c
@@ -494,12 +494,8 @@
return NETDEV_TX_BUSY;
}
- if (skb->len != sizeof(struct can_frame)) {
- dev_err(&spi->dev, "dropping packet - bad length\n");
- dev_kfree_skb(skb);
- net->stats.tx_dropped++;
+ if (can_dropped_invalid_skb(net, skb))
return NETDEV_TX_OK;
- }
netif_stop_queue(net);
priv->tx_skb = skb;