[PATCH v3] net: ifb: record drop reason when redirect device is missing

[Murari Prasad Samal <murariprasadsamal57@gmail.com>]

When redirecting packets in ifb_ri_tasklet(), the skb is dropped
if the original ingress device can no longer be found.

Use kfree_skb_reason() with SKB_DROP_REASON_DEV_DOWN so the drop
is properly attributed.

No functional change intended.

Signed-off-by: Murari Prasad Samal
---
 drivers/net/ifb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index d3dc0914450a..689340ccf9c7 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -115,7 +115,7 @@ static void ifb_ri_tasklet(struct tasklet_struct *t)
 		skb->dev = dev_get_by_index_rcu(dev_net(txp->dev), skb->skb_iif);
 		if (!skb->dev) {
 			rcu_read_unlock();
-			dev_kfree_skb(skb);
+			kfree_skb_reason(skb, SKB_DROP_REASON_NO_DEV);
 			txp->dev->stats.tx_dropped++;
 			if (skb_queue_len(&txp->tq) != 0)
 				goto resched;
-- 
2.43.0