From: Eric Dumazet edumazet@google.com
[ Upstream commit ac3ad19584b26fae9ac86e4faebe790becc74491 ]
dev_kfree_skb() is aliased to consume_skb().
When a driver is dropping a packet by calling dev_kfree_skb_any() we should propagate the drop reason instead of pretending the packet was consumed.
Note: Now we have enum skb_drop_reason we could remove enum skb_free_reason (for linux-6.4)
v2: added an unlikely(), suggested by Yunsheng Lin.
Fixes: e6247027e517 ("net: introduce dev_consume_skb_any()") Signed-off-by: Eric Dumazet edumazet@google.com Cc: Yunsheng Lin linyunsheng@huawei.com Reviewed-by: Yunsheng Lin linyunsheng@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/core/dev.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/core/dev.c b/net/core/dev.c index 24a80e960d2d9..7fc8ae7f3cd5b 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3113,8 +3113,10 @@ void __dev_kfree_skb_any(struct sk_buff *skb, enum skb_free_reason reason) { if (in_hardirq() || irqs_disabled()) __dev_kfree_skb_irq(skb, reason); + else if (unlikely(reason == SKB_REASON_DROPPED)) + kfree_skb(skb); else - dev_kfree_skb(skb); + consume_skb(skb); } EXPORT_SYMBOL(__dev_kfree_skb_any);