netdev - RE: [PATCH net-next v2 1/2] net/ethernet/realtek: Add Realtek automotive PCIe driver code

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Message-ID: <1e79bf4cdb8e4a75873d029cb7c56227@realtek.com>
Date: Fri, 11 Aug 2023 03:34:17 +0000
From: Justin Lai <justinlai0215@...ltek.com>
To: Andrew Lunn <andrew@...n.ch>
CC: "kuba@...nel.org" <kuba@...nel.org>,
        "davem@...emloft.net"
	<davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>
Subject: RE: [PATCH net-next v2 1/2] net/ethernet/realtek: Add Realtek automotive PCIe driver code

> > +#include <linux/version.h>
> > +#include <linux/ethtool.h>
> > +
> > +#define RTL_ALLOC_SKB_INTR(napi, length) napi_alloc_skb(&(napi),
> > +length)
> > +
> > +#define NETIF_F_ALL_CSUM NETIF_F_CSUM_MASK
> > +
> > +#define NETIF_F_HW_VLAN_RX NETIF_F_HW_VLAN_CTAG_RX #define
> > +NETIF_F_HW_VLAN_TX NETIF_F_HW_VLAN_CTAG_TX
> > +
> > +#define CONFIG_SRIOV 1
> > +
> > +#ifndef NETIF_F_RXALL
> > +#define NETIF_F_RXALL 0u
> > +#endif
> > +
> > +#ifndef NETIF_F_RXFCS
> > +#define NETIF_F_RXFCS 0u
> > +#endif
> > +
> > +#ifndef SET_NETDEV_DEV
> > +#define SET_NETDEV_DEV(net, pdev)
> > +#endif
> > +
> > +#ifndef SET_MODULE_OWNER
> > +#define SET_MODULE_OWNER(dev)
> > +#endif
> > +
> > +#ifndef SA_SHIRQ
> > +#define SA_SHIRQ IRQF_SHARED
> > +#endif
> > +
> > +#ifndef NETIF_F_GSO
> > +#define gso_size tso_size
> > +#define gso_segs tso_segs
> > +#endif
> > +
> > +#ifndef dma_mapping_error
> > +#define dma_mapping_error(a, b) 0
> > +#endif
> > +
> > +#ifndef netif_err
> > +#define netif_err(a, b, c, d)
> > +#endif
> > +
> > +#ifndef FALSE
> > +#define FALSE 0
> > +#endif
> > +
> > +#ifndef TRUE
> > +#define TRUE 1
> > +#endif
> > +
> > +#ifndef false
> > +#define false 0
> > +#endif
> > +
> > +#ifndef true
> > +#define true 1
> > +#endif
> 
> When i see code like this, it just shouts 'vendor crap, don't bother reviewing'.
> 
> Really, truly, get help from an experienced mainline developer to rewrite this
> code to mainline quality. Then post version 3.
> 
> Just as a hint, you are targeting net-next/main, and only net-next/main. You
> can and should use everything which is in net-next/main, and you should
> assume it exists. You are not targeting older kernels, and you should not have
> 'vendor crap' like this so it will compile with older kernels.
> 
> Spend some time looking at other drivers in mainline. If you are doing
> something which other driver don't do, very likely you are doing something
> wrong. Do you see other drivers looking to see if NETIF_F_RXALL exists, and it
> not setting it to 0?
> 
> And please don't just fix this and repost. There is a lot more wrong.
> Find a mentor to help you. The community would like to see this driver in the
> kernel, but an entity the size of Realtek can easily contract somebody to help
> get the code into shape.
> 
>     Andrew

Thank you for your suggestions, I will check our code again and make changes.