Timur Tabi wrote:
Is there a good way to test my code? ping and iperf appear to send no
more than 3 packets at a time, which comes nowhere close to filling the
queue (which holds 512 normally). netif_queue_stopped() never returns
true, no matter what I do.
Never mind, I fixed this problem. I had a race condition between
/* update produce idx */
prod_idx = (tx_q->tpd.produce_idx << tx_q->produce_shift) &
tx_q->produce_mask;
emac_reg_update32(adpt->base + tx_q->produce_reg,
tx_q->produce_mask, prod_idx);
and the call to netif_stop_queue(). The emac_reg_update32() signalled
to the hardware that data is available, and it immediately called the
ISR, before I had a chance to call netif_stop_queue(). So now I call
emac_reg_update32() after netif_stop_queue(), and everything works.
I'll post a v7 soon.
--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm
Technologies, Inc. Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
