Messages in this thread | | | From | kuznet@ms2 ... | Subject | Re: netif_wake_queue() question | Date | Mon, 28 Feb 2000 21:10:29 +0300 (MSK) |
| |
Hello!
> If you call netif_wake_queue() within the hard_start_xmit() handler and > if you have another skb queued then your hard_start_xmit() handler will > be called again really soon by the softirq stuff (at the exit from the > next irq, syscall or exception handler), often before the current packet > has been sent. Your driver may well choke on this. Also correct?
Not correct. If driver has no room to queue next packet, it does not wake itself, certainly.
> and many others.
All the drivers do this. It is not related to softnet, drivers always worked in this way. Only without softnet, if was statement "dev->tbusy=0". The rest is well explained in Jaml's paper.
Alexey
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |