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Re: [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer
From: |
Jason Wang |
Subject: |
Re: [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer is consumed |
Date: |
Tue, 14 Jul 2015 17:33:41 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
On 07/14/2015 03:53 PM, Fam Zheng wrote:
> The BH will be scheduled when etsec->rx_buffer_len is becoming 0, which
> is the condition of queuing.
>
> Signed-off-by: Fam Zheng <address@hidden>
I suggest to squash this into patch 05/12 to unbreak bisection.
And can we do this without a bh? Otherwise, we may need to stop and
restart the bh during vm stop and start?
> ---
> hw/net/fsl_etsec/etsec.c | 9 +++++++++
> hw/net/fsl_etsec/etsec.h | 2 ++
> hw/net/fsl_etsec/rings.c | 1 +
> 3 files changed, 12 insertions(+)
>
> diff --git a/hw/net/fsl_etsec/etsec.c b/hw/net/fsl_etsec/etsec.c
> index f5170ae..fcde9b4 100644
> --- a/hw/net/fsl_etsec/etsec.c
> +++ b/hw/net/fsl_etsec/etsec.c
> @@ -366,6 +366,13 @@ static NetClientInfo net_etsec_info = {
> .link_status_changed = etsec_set_link_status,
> };
>
> +static void etsec_flush_rx_queue(void *opaque)
> +{
> + eTSEC *etsec = opaque;
> +
> + qemu_flush_queued_packets(qemu_get_queue(etsec->nic));
> +}
> +
> static void etsec_realize(DeviceState *dev, Error **errp)
> {
> eTSEC *etsec = ETSEC_COMMON(dev);
> @@ -378,6 +385,8 @@ static void etsec_realize(DeviceState *dev, Error **errp)
> etsec->bh = qemu_bh_new(etsec_timer_hit, etsec);
> etsec->ptimer = ptimer_init(etsec->bh);
> ptimer_set_freq(etsec->ptimer, 100);
> +
> + etsec->flush_bh = qemu_bh_new(etsec_flush_rx_queue, etsec);
> }
>
> static void etsec_instance_init(Object *obj)
> diff --git a/hw/net/fsl_etsec/etsec.h b/hw/net/fsl_etsec/etsec.h
> index fc41773..05bb7f8 100644
> --- a/hw/net/fsl_etsec/etsec.h
> +++ b/hw/net/fsl_etsec/etsec.h
> @@ -144,6 +144,8 @@ typedef struct eTSEC {
> QEMUBH *bh;
> struct ptimer_state *ptimer;
>
> + QEMUBH *flush_bh;
> +
> } eTSEC;
>
> #define TYPE_ETSEC_COMMON "eTSEC"
> diff --git a/hw/net/fsl_etsec/rings.c b/hw/net/fsl_etsec/rings.c
> index a11280b..7aae93e 100644
> --- a/hw/net/fsl_etsec/rings.c
> +++ b/hw/net/fsl_etsec/rings.c
> @@ -646,6 +646,7 @@ void etsec_walk_rx_ring(eTSEC *etsec, int ring_nbr)
> } else {
> etsec->rx_buffer_len = 0;
> etsec->rx_buffer = NULL;
> + qemu_bh_schedule(etsec->flush_bh);
> }
>
> RING_DEBUG("eTSEC End of ring_write: remaining_data:%zu\n",
> remaining_data);
- [Qemu-devel] [PATCH for-2.4 00/12] hw/net: Fix .can_receive() for NICs, Fam Zheng, 2015/07/14
- [Qemu-devel] [PATCH for-2.4 01/12] xgmac: Drop packets with eth_can_rx is false., Fam Zheng, 2015/07/14
- [Qemu-devel] [PATCH for-2.4 02/12] pcnet: Drop pcnet_can_receive, Fam Zheng, 2015/07/14
- [Qemu-devel] [PATCH for-2.4 03/12] eepro100: Drop nic_can_receive, Fam Zheng, 2015/07/14
- [Qemu-devel] [PATCH for-2.4 04/12] usbnet: Drop usbnet_can_receive, Fam Zheng, 2015/07/14
- [Qemu-devel] [PATCH for-2.4 05/12] etsec: Move etsec_can_receive into etsec_receive, Fam Zheng, 2015/07/14
- [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer is consumed, Fam Zheng, 2015/07/14
- Re: [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer is consumed,
Jason Wang <=
- Re: [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer is consumed, Fam Zheng, 2015/07/14
- Re: [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer is consumed, Jason Wang, 2015/07/15
- Re: [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer is consumed, Fam Zheng, 2015/07/15
- Re: [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer is consumed, Jason Wang, 2015/07/15
- Re: [Qemu-devel] [PATCH for-2.4 06/12] etsec: Flush queue when rx buffer is consumed, Fam Zheng, 2015/07/15
[Qemu-devel] [PATCH for-2.4 07/12] mcf_fec: Drop mcf_fec_can_receive, Fam Zheng, 2015/07/14
[Qemu-devel] [PATCH for-2.4 09/12] mipsnet: Flush queued packets when receiving is enabled, Fam Zheng, 2015/07/14
[Qemu-devel] [PATCH for-2.4 10/12] stellaris_enet: Flush queued packets when read done, Fam Zheng, 2015/07/14
[Qemu-devel] [PATCH for-2.4 11/12] dp8393x: Flush packets when link comes up, Fam Zheng, 2015/07/14
[Qemu-devel] [PATCH for-2.4 12/12] axienet: Flush queued packets when rx is done, Fam Zheng, 2015/07/14