patches for DPDK stable branches
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From: "Jiawen Wu" <jiawenwu@trustnetic.com>
To: "'Ferruh Yigit'" <ferruh.yigit@amd.com>, <dev@dpdk.org>
Cc: <stable@dpdk.org>
Subject: RE: [PATCH v2 01/10] net/ngbe: fix Rx buffer size in configure register
Date: Tue, 14 Feb 2023 16:15:35 +0800	[thread overview]
Message-ID: <06ef01d9404c$83820a10$8a861e30$@trustnetic.com> (raw)
In-Reply-To: <057601d93c64$ebb69d30$c323d790$@trustnetic.com>

On Thursday, February 9, 2023 5:00 PM, Jiawen Wu wrote:
> On Wednesday, February 8, 2023 6:28 PM, Ferruh Yigit wrote:
> > On 2/2/2023 9:21 AM, Jiawen Wu wrote:
> > > When buffer size is less than 1K, round down makes it 0, which is an
> > > error value.
> > >
> > > Fixes: 62fc35e63d0e ("net/ngbe: support Rx queue start/stop")
> > > Cc: stable@dpdk.org
> > >
> > > Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
> > > ---
> > >  drivers/net/ngbe/ngbe_rxtx.c | 5 ++++-
> > >  1 file changed, 4 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/net/ngbe/ngbe_rxtx.c
> > > b/drivers/net/ngbe/ngbe_rxtx.c index 9fd24fa444..9a646cb6a7 100644
> > > --- a/drivers/net/ngbe/ngbe_rxtx.c
> > > +++ b/drivers/net/ngbe/ngbe_rxtx.c
> > > @@ -2944,7 +2944,10 @@ ngbe_dev_rx_init(struct rte_eth_dev *dev)
> > >  		 */
> > >  		buf_size = (uint16_t)(rte_pktmbuf_data_room_size(rxq->mb_pool) -
> > >  			RTE_PKTMBUF_HEADROOM);
> > > -		buf_size = ROUND_DOWN(buf_size, 0x1 << 10);
> > > +		if (buf_size < 1024)
> > > +			buf_size = ROUND_UP(buf_size, 0x1 << 10);
> >
> > Back to original problem statement in previous version, can't this
> > cause HW to receive packets exceeding the buffer size?
> >
> > If HW accepts buffer size in multiple of 1K, does this mean any buffer
> > size less than 1K is an error condition for this HW?
> >
> 
> After rechecking the code, the minimum buffer size is limited to 1K by the
> txgbe/ngbe [1].
> I think v1 patch for txgbe is enough.
> 
> [1]
> static int
> txgbe_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) {
> 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
> 	struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
> 
> 	dev_info->min_rx_bufsize = 1024;
> 
> 
> > > +		else
> > > +			buf_size = ROUND_DOWN(buf_size, 0x1 << 10);
> > >  		srrctl |= NGBE_RXCFG_PKTLEN(buf_size);
> > >
> > >  		wr32(hw, NGBE_RXCFG(rxq->reg_idx), srrctl);
> >
> >
> 

Hi Ferruh,

Is my proposal feasible or do I need to send v3 patch for it?



  reply	other threads:[~2023-02-14  8:16 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20230118060039.3074016-1-jiawenwu@trustnetic.com>
2023-01-18  6:00 ` [PATCH 1/8] net/txgbe: " Jiawen Wu
2023-01-27 15:36   ` Ferruh Yigit
2023-02-01  2:34     ` Jiawen Wu
2023-02-01 10:40       ` Ferruh Yigit
2023-01-18  6:00 ` [PATCH 2/8] net/txgbe: fix default signal quality value for KX/KX4 Jiawen Wu
2023-01-18  6:00 ` [PATCH 3/8] net/txgbe: fix packet type to parse from offload flags Jiawen Wu
2023-01-27 15:36   ` Ferruh Yigit
2023-02-01  3:14     ` Jiawen Wu
2023-02-01 10:41       ` Ferruh Yigit
2023-01-18  6:00 ` [PATCH 4/8] net/ngbe: " Jiawen Wu
2023-01-27 15:37   ` Ferruh Yigit
2023-01-18  6:00 ` [PATCH 5/8] net/ngbe: add spinlock protection on YT PHY Jiawen Wu
     [not found] ` <20230202092132.3271910-1-jiawenwu@trustnetic.com>
2023-02-02  9:21   ` [PATCH v2 01/10] net/ngbe: fix Rx buffer size in configure register Jiawen Wu
2023-02-08 10:28     ` Ferruh Yigit
2023-02-09  9:00       ` Jiawen Wu
2023-02-14  8:15         ` Jiawen Wu [this message]
2023-02-14  9:55           ` Ferruh Yigit
2023-02-15  9:35             ` Ferruh Yigit
2023-02-15 10:09               ` Jiawen Wu
2023-02-02  9:21   ` [PATCH v2 02/10] net/txgbe: " Jiawen Wu
2023-02-02  9:21   ` [PATCH v2 03/10] net/txgbe: fix default signal quality value for KX/KX4 Jiawen Wu
2023-02-02  9:21   ` [PATCH v2 04/10] net/txgbe: fix packet type to parse from offload flags Jiawen Wu
2023-02-02  9:21   ` [PATCH v2 05/10] net/ngbe: " Jiawen Wu
2023-02-02  9:21   ` [PATCH v2 06/10] net/ngbe: add spinlock protection on YT PHY Jiawen Wu
2023-02-02  9:21   ` [PATCH v2 09/10] net/txgbe: fix interrupt loss Jiawen Wu
2023-02-15  2:00 ` [PATCH v3] net/txgbe: fix Rx buffer size in configure register Jiawen Wu
2023-02-15 10:24   ` Ferruh Yigit

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