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Re: [PATCH net v2 3/4] r8152: re-schedule napi for tx

From Eric Dumazet <eric.dumazet@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH net v2 3/4] r8152: re-schedule napi for tx
Date 2017-01-25 15:00 +0100
Message-ID <t3whd-2sl-43@gated-at.bofh.it> (permalink)
References <t3lYu-4hv-9@gated-at.bofh.it> <t3qY9-7K2-1@gated-at.bofh.it> <t3qYa-7K2-25@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, 2017-01-25 at 16:13 +0800, Hayes Wang wrote:
> Re-schedule napi after napi_complete() for tx, if it is necessay.
> 
> In r8152_poll(), if the tx is completed after tx_bottom() and before
> napi_complete(), the scheduling of napi would be lost. Then, no
> one handles the next tx until the next napi_schedule() is called.
> 
> Signed-off-by: Hayes Wang <hayeswang@realtek.com>
> ---
>  drivers/net/usb/r8152.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
> index ec882be..45d168e 100644
> --- a/drivers/net/usb/r8152.c
> +++ b/drivers/net/usb/r8152.c
> @@ -1936,6 +1936,9 @@ static int r8152_poll(struct napi_struct *napi, int budget)
>  		napi_complete(napi);
>  		if (!list_empty(&tp->rx_done))
>  			napi_schedule(napi);
> +		else if (!skb_queue_empty(&tp->tx_queue) &&
> +			 !list_empty(&tp->tx_free))
> +			napi_schedule(&tp->napi);

Why using &tp->napi instead of napi here, as done 3 lines above ?

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Thread

[PATCH net 0/4] r8152: fix scheduling napi Hayes Wang <hayeswang@realtek.com> - 2017-01-25 04:00 +0100
  [PATCH net 1/4] r8152: avoid start_xmit to call napi_schedule during autosuspend Hayes Wang <hayeswang@realtek.com> - 2017-01-25 04:00 +0100
    Re: [PATCH net 1/4] r8152: avoid start_xmit to call napi_schedule  during autosuspend Stephen Hemminger <stephen@networkplumber.org> - 2017-01-25 06:10 +0100
  [PATCH net 4/4] r8152: check rx after napi is enabled Hayes Wang <hayeswang@realtek.com> - 2017-01-25 04:00 +0100
  [PATCH net 3/4] r8152: re-schedule napi for tx Hayes Wang <hayeswang@realtek.com> - 2017-01-25 04:00 +0100
  [PATCH net 2/4] r8152: avoid start_xmit to schedule napi when napi is disabled Hayes Wang <hayeswang@realtek.com> - 2017-01-25 04:00 +0100
  [PATCH net v2 0/4] r8152: fix scheduling napi Hayes Wang <hayeswang@realtek.com> - 2017-01-25 09:20 +0100
    [PATCH net v2 4/4] r8152: check rx after napi is enabled Hayes Wang <hayeswang@realtek.com> - 2017-01-25 09:20 +0100
    [PATCH net v2 3/4] r8152: re-schedule napi for tx Hayes Wang <hayeswang@realtek.com> - 2017-01-25 09:20 +0100
      Re: [PATCH net v2 3/4] r8152: re-schedule napi for tx Eric Dumazet <eric.dumazet@gmail.com> - 2017-01-25 15:00 +0100
        RE: [PATCH net v2 3/4] r8152: re-schedule napi for tx Hayes Wang <hayeswang@realtek.com> - 2017-01-26 02:30 +0100
    [PATCH net v2 2/4] r8152: avoid start_xmit to schedule napi when napi is disabled Hayes Wang <hayeswang@realtek.com> - 2017-01-25 09:20 +0100
    [PATCH net v2 1/4] r8152: avoid start_xmit to call napi_schedule during autosuspend Hayes Wang <hayeswang@realtek.com> - 2017-01-25 09:20 +0100
    Re: [PATCH net v2 0/4] r8152: fix scheduling napi David Miller <davem@davemloft.net> - 2017-01-25 20:40 +0100
      RE: [PATCH net v2 0/4] r8152: fix scheduling napi Hayes Wang <hayeswang@realtek.com> - 2017-01-26 04:10 +0100
        Re: [PATCH net v2 0/4] r8152: fix scheduling napi David Miller <davem@davemloft.net> - 2017-01-26 04:50 +0100
  [PATCH net v3 2/4] r8152: avoid start_xmit to schedule napi when napi is disabled Hayes Wang <hayeswang@realtek.com> - 2017-01-26 02:40 +0100
  [PATCH net v3 3/4] r8152: re-schedule napi for tx Hayes Wang <hayeswang@realtek.com> - 2017-01-26 02:40 +0100
  [PATCH net v3 1/4] r8152: avoid start_xmit to call napi_schedule during autosuspend Hayes Wang <hayeswang@realtek.com> - 2017-01-26 02:40 +0100
  [PATCH net v3 4/4] r8152: check rx after napi is enabled Hayes Wang <hayeswang@realtek.com> - 2017-01-26 02:40 +0100
  [PATCH net v3 0/4] r8152: fix scheduling napi Hayes Wang <hayeswang@realtek.com> - 2017-01-26 02:50 +0100
    Re: [PATCH net v3 0/4] r8152: fix scheduling napi David Miller <davem@davemloft.net> - 2017-01-26 04:50 +0100
      RE: [PATCH net v3 0/4] r8152: fix scheduling napi Hayes Wang <hayeswang@realtek.com> - 2017-01-26 05:00 +0100

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