Messages in this thread | | | From | Alexander Lobakin <> | Subject | [PATCH RFC net-next 0/7] netdev_features: start cleaning netdev_features_t up | Date | Fri, 5 Apr 2024 15:37:24 +0200 |
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NETDEV_FEATURE_COUNT is currently 64, which means we can't add any new features as netdev_features_t is u64. As per several discussions, instead of converting netdev_features_t to a bitmap, which would mean A LOT of changes, we can try cleaning up netdev feature bits. There's a bunch of bits which don't really mean features, rather device attributes/properties that can't be changed via Ethtool in any of the drivers. Such attributes can be moved to netdev private flags without losing any functionality. Start converting some read-only netdev features to private flags from the ones that are most obvious, like lockless Tx, inability to change network namespace etc. I was able to reduce NETDEV_FEATURE_COUNT from 64 to 58, which mean 6 free slots for new features. NETIF_F_NEVER_CHANGE is gone, so ETHTOOL_A_FEATURES_NOCHANGE Netlink reply will always be 0. I may've made some mistakes with feature inheriting and also some of these are compile-tested only, so this is marked as RFC to discuss the changes. There are obviously more read-only features to convert, such as HSR (4 bits), this will be done in subsequent series.
Alexander Lobakin (7): netdev_features: remove unused __UNUSED_NETIF_F_1 netdev_features: convert NETIF_F_LLTX to priv_flag IFF_LLTX netdevice: introduce IFF_LOGICAL as (IFF_NO_QUEUE | IFF_LLTX) netdev_features: convert NETIF_F_NETNS_LOCAL to IFF_NETNS_LOCAL netdev_features: convert NETIF_F_HIGHDMA to priv_flag IFF_HIGHDMA netdev_features: convert NETIF_F_VLAN_CHALLENGED to IFF_VLAN_CHALLENGED netdev_features: convert NETIF_F_FCOE_MTU to IFF_FCOE_MTU
Documentation/driver-api/usb/dma.rst | 2 +- Documentation/networking/ethtool-netlink.rst | 2 +- Documentation/networking/netdev-features.rst | 31 +------------- Documentation/networking/netdevices.rst | 4 +- Documentation/networking/switchdev.rst | 4 +- drivers/net/ethernet/tehuti/tehuti.h | 2 +- include/linux/if_vlan.h | 5 +-- include/linux/netdev_features.h | 26 ++---------- include/linux/netdevice.h | 31 ++++++++++++-- include/net/mac80211.h | 1 + include/net/net_failover.h | 6 ++- net/mac80211/ieee80211_i.h | 4 +- drivers/firewire/net.c | 2 +- drivers/infiniband/hw/hfi1/vnic_main.c | 3 +- drivers/infiniband/ulp/ipoib/ipoib_main.c | 3 +- drivers/net/amt.c | 4 +- drivers/net/bareudp.c | 3 +- drivers/net/bonding/bond_main.c | 42 +++++++++---------- drivers/net/dummy.c | 4 +- drivers/net/ethernet/adaptec/starfire.c | 2 +- drivers/net/ethernet/adi/adin1110.c | 3 +- drivers/net/ethernet/aeroflex/greth.c | 3 +- drivers/net/ethernet/alteon/acenic.c | 2 +- drivers/net/ethernet/altera/altera_tse_main.c | 3 +- drivers/net/ethernet/amazon/ena/ena_netdev.c | 5 ++- drivers/net/ethernet/broadcom/bcmsysport.c | 4 +- drivers/net/ethernet/broadcom/bnx2.c | 2 +- .../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 5 +-- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 6 +-- .../net/ethernet/broadcom/genet/bcmgenet.c | 4 +- drivers/net/ethernet/broadcom/tg3.c | 2 +- drivers/net/ethernet/brocade/bna/bnad.c | 9 ++-- drivers/net/ethernet/calxeda/xgmac.c | 4 +- .../net/ethernet/cavium/liquidio/lio_main.c | 4 +- .../ethernet/cavium/liquidio/lio_vf_main.c | 4 +- drivers/net/ethernet/chelsio/cxgb/cxgb2.c | 3 +- .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 4 +- .../net/ethernet/chelsio/cxgb4/cxgb4_fcoe.c | 6 +-- .../net/ethernet/chelsio/cxgb4/cxgb4_main.c | 6 +-- .../ethernet/chelsio/cxgb4vf/cxgb4vf_main.c | 6 +-- drivers/net/ethernet/cisco/enic/enic_main.c | 2 +- drivers/net/ethernet/emulex/benet/be_main.c | 5 +-- .../net/ethernet/freescale/dpaa/dpaa_eth.c | 6 +-- .../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 5 +-- .../net/ethernet/freescale/enetc/enetc_pf.c | 4 +- .../net/ethernet/freescale/enetc/enetc_vf.c | 3 +- drivers/net/ethernet/freescale/gianfar.c | 3 +- .../ethernet/fungible/funeth/funeth_main.c | 5 ++- drivers/net/ethernet/google/gve/gve_main.c | 2 +- drivers/net/ethernet/hisilicon/hix5hd2_gmac.c | 4 +- .../net/ethernet/huawei/hinic/hinic_main.c | 4 +- drivers/net/ethernet/ibm/ehea/ehea_main.c | 6 +-- drivers/net/ethernet/intel/e100.c | 2 +- drivers/net/ethernet/intel/e1000/e1000_main.c | 6 +-- drivers/net/ethernet/intel/e1000e/netdev.c | 5 +-- drivers/net/ethernet/intel/fm10k/fm10k_pci.c | 6 +-- drivers/net/ethernet/intel/i40e/i40e_main.c | 2 +- drivers/net/ethernet/intel/iavf/iavf_main.c | 3 +- drivers/net/ethernet/intel/ice/ice_main.c | 5 ++- drivers/net/ethernet/intel/idpf/idpf_lib.c | 5 ++- drivers/net/ethernet/intel/igb/igb_main.c | 4 +- drivers/net/ethernet/intel/igbvf/netdev.c | 3 +- drivers/net/ethernet/intel/igc/igc_main.c | 4 +- .../net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c | 2 +- drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c | 4 +- drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c | 3 +- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 12 +++--- .../net/ethernet/intel/ixgbe/ixgbe_sriov.c | 4 +- .../net/ethernet/intel/ixgbevf/ixgbevf_main.c | 4 +- drivers/net/ethernet/jme.c | 6 +-- .../ethernet/marvell/prestera/prestera_main.c | 3 +- drivers/net/ethernet/marvell/skge.c | 2 +- drivers/net/ethernet/marvell/sky2.c | 2 +- .../net/ethernet/mellanox/mlx4/en_netdev.c | 3 +- .../net/ethernet/mellanox/mlx5/core/en_main.c | 7 ++-- .../net/ethernet/mellanox/mlx5/core/en_rep.c | 2 +- .../net/ethernet/mellanox/mlxsw/spectrum.c | 5 ++- .../net/ethernet/myricom/myri10ge/myri10ge.c | 4 +- drivers/net/ethernet/natsemi/ns83820.c | 4 +- drivers/net/ethernet/neterion/s2io.c | 4 +- .../ethernet/netronome/nfp/nfp_net_common.c | 2 +- .../net/ethernet/netronome/nfp/nfp_net_repr.c | 5 +-- drivers/net/ethernet/nvidia/forcedeth.c | 4 +- drivers/net/ethernet/pasemi/pasemi_mac.c | 4 +- .../net/ethernet/pensando/ionic/ionic_lif.c | 4 +- .../ethernet/qlogic/netxen/netxen_nic_main.c | 6 +-- drivers/net/ethernet/qlogic/qede/qede_main.c | 6 +-- drivers/net/ethernet/qlogic/qla3xxx.c | 2 +- .../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 6 +-- .../net/ethernet/qualcomm/rmnet/rmnet_vnd.c | 2 +- drivers/net/ethernet/realtek/8139cp.c | 5 +-- drivers/net/ethernet/realtek/8139too.c | 3 +- drivers/net/ethernet/realtek/r8169_main.c | 2 +- drivers/net/ethernet/rocker/rocker_main.c | 3 +- .../net/ethernet/samsung/sxgbe/sxgbe_main.c | 4 +- drivers/net/ethernet/sfc/ef100_netdev.c | 3 +- drivers/net/ethernet/sfc/ef100_nic.c | 2 +- drivers/net/ethernet/sfc/ef100_rep.c | 3 +- drivers/net/ethernet/sfc/efx.c | 4 +- drivers/net/ethernet/sfc/falcon/efx.c | 3 +- drivers/net/ethernet/sfc/siena/efx.c | 4 +- drivers/net/ethernet/sgi/ioc3-eth.c | 3 +- drivers/net/ethernet/silan/sc92031.c | 4 +- drivers/net/ethernet/socionext/netsec.c | 3 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +- drivers/net/ethernet/sun/cassini.c | 2 +- drivers/net/ethernet/sun/niu.c | 2 +- drivers/net/ethernet/sun/sungem.c | 2 +- drivers/net/ethernet/tehuti/tehuti.c | 9 ++-- drivers/net/ethernet/ti/cpsw_new.c | 3 +- drivers/net/ethernet/toshiba/ps3_gelic_net.c | 3 +- drivers/net/ethernet/toshiba/spider_net.c | 3 +- drivers/net/ethernet/tundra/tsi108_eth.c | 2 +- drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 2 +- .../net/ethernet/wangxun/txgbe/txgbe_main.c | 2 +- drivers/net/ethernet/wiznet/w5100.c | 2 +- drivers/net/ethernet/wiznet/w5300.c | 2 +- drivers/net/ethernet/xilinx/ll_temac_main.c | 2 - drivers/net/geneve.c | 3 +- drivers/net/gtp.c | 3 +- drivers/net/hamradio/bpqether.c | 2 +- drivers/net/hyperv/netvsc_drv.c | 4 +- drivers/net/ifb.c | 4 +- drivers/net/ipvlan/ipvlan_main.c | 13 +++--- drivers/net/loopback.c | 8 ++-- drivers/net/macsec.c | 6 +-- drivers/net/macvlan.c | 12 +++--- drivers/net/net_failover.c | 36 ++++++++-------- drivers/net/netdevsim/netdev.c | 6 +-- drivers/net/netkit.c | 6 +-- drivers/net/nlmon.c | 5 +-- drivers/net/ntb_netdev.c | 3 +- drivers/net/ppp/ppp_generic.c | 2 +- drivers/net/rionet.c | 2 +- drivers/net/tap.c | 3 +- drivers/net/team/team_core.c | 27 ++++++------ drivers/net/thunderbolt/main.c | 3 +- drivers/net/tun.c | 5 ++- drivers/net/usb/r8152.c | 5 ++- drivers/net/veth.c | 6 +-- drivers/net/virtio_net.c | 3 +- drivers/net/vmxnet3/vmxnet3_drv.c | 3 +- drivers/net/vrf.c | 17 +++----- drivers/net/vsockmon.c | 5 +-- drivers/net/vxlan/vxlan_core.c | 3 +- drivers/net/wireguard/device.c | 5 +-- .../net/wireless/intel/iwlwifi/dvm/mac80211.c | 6 ++- .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 6 ++- drivers/net/wwan/t7xx/t7xx_netdev.c | 3 +- drivers/s390/net/qeth_l2_main.c | 2 +- drivers/scsi/fcoe/fcoe.c | 4 +- drivers/staging/octeon/ethernet.c | 2 +- drivers/usb/fotg210/fotg210-hcd.c | 2 +- drivers/usb/host/ehci-hcd.c | 2 +- drivers/usb/host/oxu210hp-hcd.c | 2 +- lib/test_bpf.c | 3 +- net/8021q/vlan.c | 2 +- net/8021q/vlan_dev.c | 8 ++-- net/batman-adv/soft-interface.c | 5 +-- net/bridge/br_device.c | 9 ++-- net/core/dev.c | 34 +++++++++++---- net/core/net-sysfs.c | 3 +- net/dsa/user.c | 3 +- net/ethtool/common.c | 5 --- net/ethtool/features.c | 2 +- net/ethtool/ioctl.c | 3 +- net/hsr/hsr_device.c | 19 +++------ net/ieee802154/6lowpan/core.c | 3 +- net/ieee802154/core.c | 10 ++--- net/ipv4/ip_gre.c | 5 ++- net/ipv4/ip_tunnel.c | 2 +- net/ipv4/ip_vti.c | 2 +- net/ipv4/ipip.c | 3 +- net/ipv4/ipmr.c | 2 +- net/ipv6/ip6_gre.c | 8 ++-- net/ipv6/ip6_tunnel.c | 5 +-- net/ipv6/ip6mr.c | 2 +- net/ipv6/sit.c | 5 +-- net/l2tp/l2tp_eth.c | 2 +- net/mac80211/iface.c | 2 + net/openvswitch/vport-internal_dev.c | 12 +++--- net/wireless/core.c | 10 ++--- net/xfrm/xfrm_interface_core.c | 2 +- tools/testing/selftests/net/forwarding/README | 2 +- 184 files changed, 462 insertions(+), 498 deletions(-)
-- 2.44.0
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