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-rw-r--r--include/linux/skbuff.h4
-rw-r--r--net/can/raw.c4
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d89876b..d20d9e7 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -169,6 +169,7 @@ struct skb_shared_hwtstamps {
* @software: generate software time stamp
* @in_progress: device driver is going to provide
* hardware time stamp
+ * @prevent_sk_orphan: make sk reference available on driver level
* @flags: all shared_tx flags
*
* These flags are attached to packets as part of the
@@ -178,7 +179,8 @@ union skb_shared_tx {
struct {
__u8 hardware:1,
software:1,
- in_progress:1;
+ in_progress:1,
+ prevent_sk_orphan:1;
};
__u8 flags;
};
diff --git a/net/can/raw.c b/net/can/raw.c
index ccfe633..a10e333 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -650,6 +650,10 @@ static int raw_sendmsg(struct kiocb *iocb, struct socket *sock,
err = sock_tx_timestamp(msg, sk, skb_tx(skb));
if (err < 0)
goto free_skb;
+
+ /* to be able to check the received tx sock reference in raw_rcv() */
+ skb_tx(skb)->prevent_sk_orphan = 1;
+
skb->dev = dev;
skb->sk = sk;
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