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SubjectRe: uli526x hangs on 2.6.29, not on rc8
Santiago Garcia Mantinan a écrit :
> Hi!
>
> After upgrading from rc8 to final 2.6.29 my machine's network stops working
> after some full speed (100Mb/s) downloads ifdown;ifup, or powering off the
> switch won't solve the problem, however it is solved if I unload the driver
> module and load it again. Tested with another NIC (e1000e based) and
> couldn't reproduce the problem.
>
> This is happening on final 2.6.29 version but doesn't seem to happen on rc8
> with the same kernel config. Machine is a AMD Athlon 64 running Debian 64
> bits.
>
> I don't see any changes on the git for uli526x from rc8 to final, but the
> tulip driver on which this one is based had some changes.
>
> Don't know what else to add, just ask me for whatever data that may help on
> this.
>
> Regards...

Hi

This is a known problem, and a fix should be available very soon for 2.6.29.1

http://www.spinics.net/lists/netdev/msg92829.html

You can check net/core/dev.c function process_backlog() should get this
updated version :

static int process_backlog(struct napi_struct *napi, int quota)
{
int work = 0;
struct softnet_data *queue = &__get_cpu_var(softnet_data);
unsigned long start_time = jiffies;

napi->weight = weight_p;
do {
struct sk_buff *skb;

local_irq_disable();
skb = __skb_dequeue(&queue->input_pkt_queue);
if (!skb) {
list_del(&napi->poll_list);
clear_bit(NAPI_STATE_SCHED, &napi->state);
local_irq_enable();
break;
}
local_irq_enable();

napi_gro_receive(napi, skb);
} while (++work < quota && jiffies == start_time);

napi_gro_flush(napi);

return work;
}


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