hello everyone : Please bear with me if you think I said something wrong.
I was looking at the netif_receive_skb() code and it seems to me that for vlan tagged packets, the counters are manipulated at two different places. One is from vlan_do_receive() where the receive counters are incremented. The other counter (the dropped counter) is incremented at the very end of netif_receive_skb() when there are no takers for this packet. The dropped counts are incremented for skb->dev->rx_dropped whereas the receive counts are incremented for the vlan device specific private stat counter values. When the numbers are reported on /proc/net/dev (from where ifconfig gets the numbers), these two stat counters are combined together (see dev_get_stats() where rx_dropped is added to the device private stat numbers). So if no one is receiving the tagged packets, it will be reported both as received and dropped! I wonder whether I am analyzing it wrong or whether no one has noticed this before or whether this is intentional. Any clarification will be greatly appreciated. Again, I could be wrong looking at the code, so please bear with me. Thanks ani -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
