diff options
Diffstat (limited to 'net/can/j1939/main.c')
| -rw-r--r-- | net/can/j1939/main.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c index 8452b0fbb78c..821d4ff303b3 100644 --- a/net/can/j1939/main.c +++ b/net/can/j1939/main.c @@ -42,6 +42,10 @@ static void j1939_can_recv(struct sk_buff *iskb, void *data) struct j1939_sk_buff_cb *skcb, *iskcb; struct can_frame *cf; + /* make sure we only get Classical CAN frames */ + if (!can_is_can_skb(iskb)) + return; + /* create a copy of the skb * j1939 only delivers the real data bytes, * the header goes into sockaddr. @@ -332,6 +336,9 @@ int j1939_send_one(struct j1939_priv *priv, struct sk_buff *skb) /* re-claim the CAN_HDR from the SKB */ cf = skb_push(skb, J1939_CAN_HDR); + /* initialize header structure */ + memset(cf, 0, J1939_CAN_HDR); + /* make it a full can frame again */ skb_put(skb, J1939_CAN_FTR + (8 - dlc)); |