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Date: Wed, 10 Aug 2022 20:15:32 +0800
From: "shenjian (K)" <shenjian15@...wei.com>
To: Alexander Lobakin <alexandr.lobakin@...el.com>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <andrew@...n.ch>,
<ecree.xilinx@...il.com>, <hkallweit1@...il.com>,
<saeed@...nel.org>, <leon@...nel.org>, <netdev@...r.kernel.org>,
<linuxarm@...neuler.org>
Subject: Re: [RFCv7 PATCH net-next 03/36] net: replace multiple feature bits
with DECLARE_NETDEV_FEATURE_SET
在 2022/8/10 18:37, Alexander Lobakin 写道:
> From: Jian Shen <shenjian15@...wei.com>
> Date: Wed, 10 Aug 2022 11:05:51 +0800
>
>> There are many netdev_features bits group used in drivers, replace them
>> with DECLARE_NETDEV_FEATURE_SET, prepare to remove all the NETIF_F_XXX
>> macroes.
>>
>> Signed-off-by: Jian Shen <shenjian15@...wei.com>
>> ---
>> arch/um/drivers/vector_transports.c | 49 +++++--
>> drivers/infiniband/ulp/ipoib/ipoib.h | 1 +
>> drivers/infiniband/ulp/ipoib/ipoib_main.c | 8 +-
>> drivers/net/amt.c | 16 ++-
>> drivers/net/bareudp.c | 21 ++-
>> drivers/net/bonding/bond_main.c | 48 +++++--
>> drivers/net/dsa/xrs700x/xrs700x.c | 15 +-
>> drivers/net/dummy.c | 11 +-
>> drivers/net/ethernet/3com/typhoon.c | 18 ++-
>> drivers/net/ethernet/aeroflex/greth.c | 9 +-
>> drivers/net/ethernet/alteon/acenic.c | 10 +-
>> drivers/net/ethernet/amazon/ena/ena_netdev.c | 13 +-
>> drivers/net/ethernet/amd/xgbe/xgbe-main.c | 59 ++++----
>> .../net/ethernet/apm/xgene/xgene_enet_main.c | 12 +-
>> .../net/ethernet/aquantia/atlantic/aq_nic.c | 14 +-
>> drivers/net/ethernet/asix/ax88796c_main.c | 21 ++-
>> drivers/net/ethernet/atheros/alx/main.c | 15 +-
>> drivers/net/ethernet/atheros/atl1c/atl1c.h | 1 +
>> .../net/ethernet/atheros/atl1c/atl1c_main.c | 14 +-
>> drivers/net/ethernet/atheros/atl1e/atl1e.h | 1 +
>> .../net/ethernet/atheros/atl1e/atl1e_main.c | 10 +-
>> drivers/net/ethernet/atheros/atlx/atl1.c | 22 ++-
>> drivers/net/ethernet/broadcom/bcmsysport.c | 24 +++-
>> drivers/net/ethernet/broadcom/bgmac.c | 9 +-
>> drivers/net/ethernet/broadcom/bnx2.c | 14 +-
>> .../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 83 ++++++++---
>> drivers/net/ethernet/broadcom/bnxt/bnxt.c | 54 +++++--
>> .../net/ethernet/broadcom/genet/bcmgenet.c | 10 +-
>> drivers/net/ethernet/brocade/bna/bnad.c | 39 +++--
>> drivers/net/ethernet/calxeda/xgmac.c | 15 +-
>> .../net/ethernet/cavium/liquidio/lio_main.c | 42 ++++--
>> .../ethernet/cavium/liquidio/lio_vf_main.c | 40 ++++--
>> .../ethernet/cavium/liquidio/octeon_network.h | 4 +-
>> .../net/ethernet/cavium/thunder/nicvf_main.c | 27 +++-
>> drivers/net/ethernet/chelsio/cxgb/cxgb2.c | 19 ++-
>> .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 29 +++-
>> .../net/ethernet/chelsio/cxgb4/cxgb4_main.c | 68 ++++++---
>> .../ethernet/chelsio/cxgb4vf/cxgb4vf_main.c | 39 ++++-
>> drivers/net/ethernet/cirrus/ep93xx_eth.c | 7 +-
>> drivers/net/ethernet/cisco/enic/enic_main.c | 19 ++-
>> drivers/net/ethernet/cortina/gemini.c | 22 ++-
>> drivers/net/ethernet/emulex/benet/be_main.c | 47 ++++--
>> drivers/net/ethernet/faraday/ftgmac100.c | 13 +-
>> .../net/ethernet/freescale/dpaa/dpaa_eth.c | 14 +-
>> .../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 17 ++-
>> .../ethernet/freescale/dpaa2/dpaa2-switch.c | 10 +-
>> .../ethernet/freescale/dpaa2/dpaa2-switch.h | 1 +
>> .../net/ethernet/freescale/enetc/enetc_pf.c | 42 ++++--
>> .../net/ethernet/freescale/enetc/enetc_vf.c | 40 ++++--
>> drivers/net/ethernet/freescale/fec_main.c | 11 +-
>> drivers/net/ethernet/freescale/gianfar.c | 18 ++-
>> .../ethernet/fungible/funeth/funeth_main.c | 48 +++++--
>> drivers/net/ethernet/google/gve/gve_main.c | 21 +--
>> drivers/net/ethernet/hisilicon/hns/hns_enet.c | 51 +++++--
>> .../net/ethernet/hisilicon/hns3/hns3_enet.c | 40 ++++--
>> .../net/ethernet/huawei/hinic/hinic_main.c | 37 +++--
>> drivers/net/ethernet/ibm/ehea/ehea_main.c | 34 +++--
>> drivers/net/ethernet/ibm/emac/core.c | 7 +-
>> drivers/net/ethernet/ibm/ibmveth.c | 11 +-
>> drivers/net/ethernet/ibm/ibmvnic.c | 8 +-
>> drivers/net/ethernet/intel/e1000/e1000.h | 1 +
>> drivers/net/ethernet/intel/e1000/e1000_main.c | 33 +++--
>> drivers/net/ethernet/intel/e1000e/netdev.c | 46 ++++--
>> .../net/ethernet/intel/fm10k/fm10k_netdev.c | 37 +++--
>> drivers/net/ethernet/intel/i40e/i40e_main.c | 75 +++++-----
>> drivers/net/ethernet/intel/iavf/iavf.h | 1 +
>> drivers/net/ethernet/intel/iavf/iavf_main.c | 43 +++---
>> drivers/net/ethernet/intel/ice/ice.h | 1 +
>> drivers/net/ethernet/intel/ice/ice_main.c | 64 ++++++---
>> drivers/net/ethernet/intel/igb/igb_main.c | 74 ++++++----
>> drivers/net/ethernet/intel/igbvf/netdev.c | 76 ++++++----
>> drivers/net/ethernet/intel/igc/igc_mac.c | 1 +
>> drivers/net/ethernet/intel/igc/igc_main.c | 77 ++++++----
>> drivers/net/ethernet/intel/ixgb/ixgb_main.c | 15 +-
>> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 134 +++++++++++-------
>> drivers/net/ethernet/intel/ixgbevf/ipsec.c | 15 +-
>> drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 1 +
>> .../net/ethernet/intel/ixgbevf/ixgbevf_main.c | 87 +++++++-----
>> drivers/net/ethernet/jme.c | 34 +++--
>> drivers/net/ethernet/marvell/mv643xx_eth.c | 9 +-
>> drivers/net/ethernet/marvell/mvneta.c | 12 +-
>> .../net/ethernet/marvell/mvpp2/mvpp2_main.c | 19 ++-
>> .../ethernet/marvell/octeontx2/nic/otx2_pf.c | 17 ++-
>> .../ethernet/marvell/octeontx2/nic/otx2_vf.c | 17 ++-
>> drivers/net/ethernet/marvell/skge.c | 9 +-
>> drivers/net/ethernet/marvell/sky2.c | 19 ++-
>> drivers/net/ethernet/mellanox/mlx4/en_main.c | 1 +
>> .../net/ethernet/mellanox/mlx4/en_netdev.c | 75 ++++++----
>> .../ethernet/mellanox/mlx5/core/ipoib/ipoib.c | 20 +--
>> .../net/ethernet/mellanox/mlxsw/spectrum.c | 16 ++-
>> drivers/net/ethernet/micrel/ksz884x.c | 9 +-
>> drivers/net/ethernet/microchip/lan743x_main.c | 9 +-
>> drivers/net/ethernet/microsoft/mana/mana_en.c | 15 +-
>> drivers/net/ethernet/mscc/ocelot_net.c | 14 +-
>> .../net/ethernet/myricom/myri10ge/myri10ge.c | 11 +-
>> drivers/net/ethernet/neterion/s2io.c | 24 +++-
>> drivers/net/ethernet/nvidia/forcedeth.c | 10 +-
>> .../ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 10 +-
>> drivers/net/ethernet/pasemi/pasemi_mac.c | 11 +-
>> .../net/ethernet/pensando/ionic/ionic_lif.c | 23 +--
>> .../ethernet/qlogic/netxen/netxen_nic_main.c | 11 +-
>> drivers/net/ethernet/qlogic/qede/qede_main.c | 50 +++++--
>> .../net/ethernet/qlogic/qlcnic/qlcnic_hw.c | 29 ++--
>> .../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 34 +++--
>> drivers/net/ethernet/qualcomm/emac/emac.c | 23 ++-
>> .../net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 12 +-
>> drivers/net/ethernet/realtek/8139cp.c | 23 ++-
>> drivers/net/ethernet/realtek/8139too.c | 8 +-
>> drivers/net/ethernet/realtek/r8169_main.c | 18 ++-
>> .../net/ethernet/samsung/sxgbe/sxgbe_main.c | 15 +-
>> drivers/net/ethernet/sfc/ef10.c | 11 +-
>> drivers/net/ethernet/sfc/ef100_netdev.c | 9 +-
>> drivers/net/ethernet/sfc/ef100_nic.c | 15 +-
>> drivers/net/ethernet/sfc/efx.c | 21 ++-
>> drivers/net/ethernet/sfc/falcon/efx.c | 10 +-
>> drivers/net/ethernet/sfc/falcon/net_driver.h | 1 +
>> drivers/net/ethernet/sfc/net_driver.h | 1 +
>> drivers/net/ethernet/sfc/siena/efx.c | 22 ++-
>> drivers/net/ethernet/sgi/ioc3-eth.c | 13 +-
>> drivers/net/ethernet/silan/sc92031.c | 11 +-
>> drivers/net/ethernet/socionext/netsec.c | 11 +-
>> .../net/ethernet/stmicro/stmmac/stmmac_main.c | 11 +-
>> drivers/net/ethernet/sun/ldmvsw.c | 7 +-
>> drivers/net/ethernet/sun/niu.c | 9 +-
>> drivers/net/ethernet/sun/sungem.c | 9 +-
>> drivers/net/ethernet/sun/sunvnet.c | 10 +-
>> drivers/net/ethernet/tehuti/tehuti.c | 25 +++-
>> drivers/net/ethernet/tehuti/tehuti.h | 1 +
>> drivers/net/ethernet/ti/am65-cpsw-nuss.c | 13 +-
>> drivers/net/ethernet/ti/cpsw_new.c | 11 +-
>> drivers/net/ethernet/via/via-velocity.c | 19 ++-
>> drivers/net/geneve.c | 20 ++-
>> drivers/net/hyperv/netvsc_drv.c | 11 +-
>> drivers/net/ifb.c | 20 ++-
>> drivers/net/ipvlan/ipvlan_main.c | 58 ++++++--
>> drivers/net/ipvlan/ipvtap.c | 12 +-
>> drivers/net/loopback.c | 25 ++--
>> drivers/net/macsec.c | 22 ++-
>> drivers/net/macvlan.c | 56 ++++++--
>> drivers/net/macvtap.c | 12 +-
>> drivers/net/net_failover.c | 23 +++
>> drivers/net/netdevsim/ipsec.c | 13 +-
>> drivers/net/netdevsim/netdev.c | 14 +-
>> drivers/net/netdevsim/netdevsim.h | 1 +
>> drivers/net/nlmon.c | 11 +-
>> drivers/net/tap.c | 18 ++-
>> drivers/net/team/team.c | 31 +++-
>> drivers/net/thunderbolt.c | 11 +-
>> drivers/net/tun.c | 28 +++-
>> drivers/net/usb/aqc111.c | 38 ++++-
>> drivers/net/usb/aqc111.h | 14 --
>> drivers/net/usb/ax88179_178a.c | 11 +-
>> drivers/net/usb/lan78xx.c | 8 +-
>> drivers/net/usb/r8152.c | 53 +++++--
>> drivers/net/usb/smsc75xx.c | 10 +-
>> drivers/net/veth.c | 27 ++--
>> drivers/net/vmxnet3/vmxnet3_drv.c | 36 +++--
>> drivers/net/vmxnet3/vmxnet3_ethtool.c | 35 +++--
>> drivers/net/vmxnet3/vmxnet3_int.h | 1 +
>> drivers/net/vrf.c | 12 +-
>> drivers/net/vsockmon.c | 11 +-
>> drivers/net/vxlan/vxlan_core.c | 20 ++-
>> drivers/net/wireguard/device.c | 20 ++-
>> drivers/net/wireless/ath/wil6210/netdev.c | 14 +-
>> drivers/net/xen-netback/interface.c | 14 +-
>> drivers/net/xen-netfront.c | 20 ++-
>> drivers/s390/net/qeth_l3_main.c | 13 +-
>> drivers/staging/qlge/qlge_main.c | 21 +--
>> include/net/bonding.h | 5 +-
>> include/net/net_failover.h | 8 +-
>> net/8021q/vlan_dev.c | 15 +-
>> net/batman-adv/soft-interface.c | 9 +-
>> net/bridge/br_device.c | 25 +++-
>> net/ethtool/ioctl.c | 17 ++-
>> net/hsr/hsr_device.c | 13 +-
>> net/ipv4/ip_gre.c | 19 +--
>> net/ipv4/ipip.c | 19 ++-
>> net/ipv6/ip6_gre.c | 15 +-
>> net/ipv6/ip6_tunnel.c | 19 ++-
>> net/ipv6/sit.c | 18 ++-
>> net/mac80211/ieee80211_i.h | 13 +-
>> net/mac80211/main.c | 24 ++++
>> net/openvswitch/vport-internal_dev.c | 13 +-
>> net/xfrm/xfrm_interface.c | 16 ++-
>> 184 files changed, 2923 insertions(+), 1139 deletions(-)
> [...]
>
>> +static DECLARE_NETDEV_FEATURE_SET(bond_mpls_feature_set,
>> + NETIF_F_HW_CSUM_BIT,
>> + NETIF_F_SG_BIT);
>> +
>> +static netdev_features_t bond_vlan_features __ro_after_init;
>> +static netdev_features_t bond_enc_features __ro_after_init;
>> +static netdev_features_t bond_mpls_features __ro_after_init;
>> /*-------------------------- Forward declarations ---------------------------*/
> Nit: any reason to not leave an empty space in between the
> declarations and that comment line?
ok, will fix it.
>>
>> static int bond_init(struct net_device *bond_dev);
>> @@ -1421,16 +1441,11 @@ static netdev_features_t bond_fix_features(struct net_device *dev,
>> return features;
>> }
> [...]
>
>> /**
>> * struct gmac_queue_page - page buffer per-page info
>> @@ -2610,6 +2618,12 @@ static struct platform_driver gemini_ethernet_driver = {
>> .remove = gemini_ethernet_remove,
>> };
>>
>> +static void __init gmac_netdev_features_init(void)
>> +{
>> + netdev_features_set_array(&gmac_offload_feature_set,
>> + &gmac_offload_features);
>> +}
> I'd say it's not worth it to create a new function for a one-liner.
ok, will move it into gemini_ethernet_module_init().
>> +
>> static int __init gemini_ethernet_module_init(void)
>> {
>> int ret;
>> @@ -2624,6 +2638,8 @@ static int __init gemini_ethernet_module_init(void)
>> return ret;
>> }
>>
>> + gmac_netdev_features_init();
>> +
>> return 0;
>> }
>> module_init(gemini_ethernet_module_init);
> [...]
>
>> @@ -120,16 +144,12 @@ static void enetc_vf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
>> ndev->watchdog_timeo = 5 * HZ;
>> ndev->max_mtu = ENETC_MAX_MTU;
>>
>> - ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
>> - NETIF_F_HW_VLAN_CTAG_TX |
>> - NETIF_F_HW_VLAN_CTAG_RX |
>> - NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
>> - ndev->features = NETIF_F_HIGHDMA | NETIF_F_SG | NETIF_F_RXCSUM |
>> - NETIF_F_HW_VLAN_CTAG_TX |
>> - NETIF_F_HW_VLAN_CTAG_RX |
>> - NETIF_F_HW_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
>> - ndev->vlan_features = NETIF_F_SG | NETIF_F_HW_CSUM |
>> - NETIF_F_TSO | NETIF_F_TSO6;
>> + netdev_hw_features_zero(ndev);
>> + netdev_hw_features_set_array(ndev, &enetc_vf_hw_feature_set);
> Hmm, I see that pattern
>
> netdev*_features_zero();
> netdev*_features_set_array();
>
> pretty often, maybe create a couple static inlines like
> 'netdev*_features_from_array'? And use it for initializing
> shared/exported netdev_features as well? Otherwise, sooner or later,
> but someone will forget to zero the features before setting them and
> will get a garbage and some hard-to-track bugs %)
Make sense, this also trouble me too. I will add it.
BTW, I want to add a netdev*_features_from_bit too, for there
are many places use "xxx_features = NET_IF_F_XXX".
>> + netdev_active_features_zero(ndev);
>> + netdev_active_features_set_array(ndev, &enetc_vf_feature_set);
>> + netdev_vlan_features_zero(ndev);
>> + netdev_vlan_features_set_array(ndev, &enetc_vf_vlan_feature_set);
>>
>> if (si->num_rss)
>> ndev->hw_features |= NETIF_F_RXHASH;
>> diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
>> index e8e2aa1e7f01..49850ee91d4e 100644
>> --- a/drivers/net/ethernet/freescale/fec_main.c
>> +++ b/drivers/net/ethernet/freescale/fec_main.c
> [...]
>
>> +static DECLARE_NETDEV_FEATURE_SET(fun_vlan_feature_set,
>> + NETIF_F_SG_BIT,
>> + NETIF_F_HW_CSUM_BIT,
>> + NETIF_F_HIGHDMA_BIT);
>> +
>> static int fun_create_netdev(struct fun_ethdev *ed, unsigned int portid)
>> {
>> + netdev_features_t gso_encap_flags = netdev_empty_features;
>> + netdev_features_t tso_flags = netdev_empty_features;
> Same here as I mentioned previously, direct assignments wouldn't
> work here later for bitmaps. So it's rather bitmap_copy(), i.e.
> netdev_features_copy(), or am I missing something?
netdev_features_t will be converted from u64 to structure below:
typedef struct {
DECLARE_BITMAP(bits, NETDEV_FEATURE_COUNT);
} netdev_features_t;
So directly assignement is ok
>> struct fun_dev *fdev = &ed->fdev;
>> + netdev_features_t vlan_feat;
>> struct net_device *netdev;
>> struct funeth_priv *fp;
>> unsigned int ntx, nrx;
> [...]
>
>> @@ -1265,6 +1266,13 @@ static void ax88179_get_mac_addr(struct usbnet *dev)
>> dev->net->dev_addr);
>> }
>>
>> +DECLARE_NETDEV_FEATURE_SET(ax88179_feature_set,
> static?
> You can use sparse to detect such places (`make C=1`).
Right, I will check it.
>> + NETIF_F_SG_BIT,
>> + NETIF_F_IP_CSUM_BIT,
>> + NETIF_F_IPV6_CSUM_BIT,
>> + NETIF_F_RXCSUM_BIT,
>> + NETIF_F_TSO_BIT);
> [...]
>
>> --
>> 2.33.0
> Thanks,
> Olek
>
> .
Thanks,
Jian
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