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Date: Wed, 1 Feb 2023 11:24:16 +0100
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: bpf@...r.kernel.org
Cc: netdev@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
andrii@...nel.org, davem@...emloft.net, kuba@...nel.org,
pabeni@...hat.com, edumazet@...gle.com, hawk@...nel.org,
toke@...hat.com, memxor@...il.com, alardam@...il.com,
saeedm@...dia.com, anthony.l.nguyen@...el.com, gospo@...adcom.com,
vladimir.oltean@....com, nbd@....name, john@...ozen.org,
leon@...nel.org, simon.horman@...igine.com, aelior@...vell.com,
christophe.jaillet@...adoo.fr, ecree.xilinx@...il.com,
mst@...hat.com, bjorn@...nel.org, magnus.karlsson@...el.com,
maciej.fijalkowski@...el.com, intel-wired-lan@...ts.osuosl.org,
lorenzo.bianconi@...hat.com, martin.lau@...ux.dev, sdf@...gle.com,
gerhard@...leder-embedded.com
Subject: [PATCH v5 bpf-next 0/8] xdp: introduce xdp-feature support
Introduce the capability to export the XDP features supported by the NIC.
Introduce a XDP compliance test tool (xdp_features) to check the features
exported by the NIC match the real features supported by the driver.
Allow XDP_REDIRECT of non-linear XDP frames into a devmap.
Export XDP features for each XDP capable driver.
Extend libbpf netlink implementation in order to support netlink_generic
protocol.
Introduce a simple generic netlink family for netdev data.
Changes since v4:
- rebase on top of bpf-next
- get rid of XDP_FEATURE_* enum in XDP compliance test tool
- rely on AF_INET6 address family and on IPv6-mapped-IPv6 addresses for IPv4
in XDP compliance test tool
- add tsnep driver support
Changes since v3:
- add IPv6 support to XDP compliance test tool
- rely on network_helpers in XDP compliance test tool
- cosmetics changes
Changes since v2:
- rebase on top of bpf-next
- fix compilation error
Changes since v1:
- add Documentation to netdev.yaml
- use flags instead of enum as type for netdev.yaml definitions
- squash XDP_PASS, XDP_DROP, XDP_TX and XDP_ABORTED into XDP_BASIC since they
are supported by all drivers.
- add notifier event to xdp_features_set_redirect_target() and
xdp_features_clear_redirect_target()
- add selftest for xdp-features support in bpf_xdp_detach()
- add IPv6 preliminary support to XDP compliance test tool
Changes since RFCv2:
- do not assume fixed layout for genl kernel messages
- fix warnings in netdev_nl_dev_fill
- fix capabilities for nfp driver
- add supported_sg parameter to xdp_features_set_redirect_target and drop
__xdp_features_set_redirect_target routine
Changes since RFCv1:
- Introduce netdev-genl implementation and get rid of rtnl one.
- Introduce netlink_generic support in libbpf netlink implementation
- Rename XDP_FEATURE_* in NETDEV_XDP_ACT_*
- Rename XDP_FEATURE_REDIRECT_TARGET in NETDEV_XDP_ACT_NDO_XMIT
- Rename XDP_FEATURE_FRAG_RX in NETDEV_XDP_ACT_RX_SG
- Rename XDP_FEATURE_FRAG_TARFET in NETDEV_XDP_ACT_NDO_XMIT
- Get rid of XDP_LOCK feature.
- Move xdp_feature field in a netdevice struct hole in the 4th cacheline.
Jakub Kicinski (1):
netdev-genl: create a simple family for netdev stuff
Lorenzo Bianconi (5):
libbpf: add the capability to specify netlink proto in
libbpf_netlink_send_recv
libbpf: add API to get XDP/XSK supported features
bpf: devmap: check XDP features in __xdp_enqueue routine
selftests/bpf: add test for bpf_xdp_query xdp-features support
selftests/bpf: introduce XDP compliance test tool
Marek Majtyka (2):
drivers: net: turn on XDP features
xsk: add usage of XDP features flags
Documentation/netlink/specs/netdev.yaml | 100 +++
drivers/net/ethernet/amazon/ena/ena_netdev.c | 4 +
.../net/ethernet/aquantia/atlantic/aq_nic.c | 5 +
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 +
drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 2 +
.../net/ethernet/cavium/thunder/nicvf_main.c | 2 +
drivers/net/ethernet/engleder/tsnep_main.c | 4 +
.../net/ethernet/freescale/dpaa/dpaa_eth.c | 4 +
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 4 +
.../net/ethernet/freescale/enetc/enetc_pf.c | 3 +
.../ethernet/fungible/funeth/funeth_main.c | 6 +
drivers/net/ethernet/intel/i40e/i40e_main.c | 10 +-
drivers/net/ethernet/intel/ice/ice_main.c | 5 +
drivers/net/ethernet/intel/igb/igb_main.c | 9 +-
drivers/net/ethernet/intel/igc/igc_main.c | 3 +
drivers/net/ethernet/intel/igc/igc_xdp.c | 5 +
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 6 +
.../net/ethernet/intel/ixgbevf/ixgbevf_main.c | 1 +
drivers/net/ethernet/marvell/mvneta.c | 3 +
.../net/ethernet/marvell/mvpp2/mvpp2_main.c | 4 +
.../ethernet/marvell/octeontx2/nic/otx2_pf.c | 8 +-
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 6 +
.../net/ethernet/mellanox/mlx4/en_netdev.c | 2 +
.../net/ethernet/mellanox/mlx5/core/en_main.c | 11 +
drivers/net/ethernet/microsoft/mana/mana_en.c | 2 +
.../ethernet/netronome/nfp/nfp_net_common.c | 5 +
drivers/net/ethernet/qlogic/qede/qede_main.c | 3 +
drivers/net/ethernet/sfc/efx.c | 4 +
drivers/net/ethernet/sfc/siena/efx.c | 4 +
drivers/net/ethernet/socionext/netsec.c | 3 +
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +
drivers/net/ethernet/ti/cpsw.c | 4 +
drivers/net/ethernet/ti/cpsw_new.c | 4 +
drivers/net/hyperv/netvsc_drv.c | 2 +
drivers/net/netdevsim/netdev.c | 1 +
drivers/net/tun.c | 5 +
drivers/net/veth.c | 4 +
drivers/net/virtio_net.c | 4 +
drivers/net/xen-netfront.c | 2 +
include/linux/netdevice.h | 3 +
include/net/xdp.h | 15 +
include/uapi/linux/netdev.h | 59 ++
kernel/bpf/devmap.c | 16 +-
net/core/Makefile | 3 +-
net/core/dev.c | 1 +
net/core/filter.c | 13 +-
net/core/netdev-genl-gen.c | 48 ++
net/core/netdev-genl-gen.h | 23 +
net/core/netdev-genl.c | 179 +++++
net/core/xdp.c | 18 +
net/xdp/xsk_buff_pool.c | 7 +-
tools/include/uapi/linux/netdev.h | 59 ++
tools/lib/bpf/libbpf.h | 3 +-
tools/lib/bpf/netlink.c | 118 ++-
tools/lib/bpf/nlattr.h | 12 +
tools/testing/selftests/bpf/.gitignore | 1 +
tools/testing/selftests/bpf/Makefile | 11 +-
.../bpf/prog_tests/xdp_do_redirect.c | 27 +-
.../selftests/bpf/prog_tests/xdp_info.c | 8 +
.../selftests/bpf/progs/xdp_features.c | 269 +++++++
.../selftests/bpf/test_xdp_features.sh | 107 +++
tools/testing/selftests/bpf/xdp_features.c | 699 ++++++++++++++++++
tools/testing/selftests/bpf/xdp_features.h | 20 +
63 files changed, 1945 insertions(+), 33 deletions(-)
create mode 100644 Documentation/netlink/specs/netdev.yaml
create mode 100644 include/uapi/linux/netdev.h
create mode 100644 net/core/netdev-genl-gen.c
create mode 100644 net/core/netdev-genl-gen.h
create mode 100644 net/core/netdev-genl.c
create mode 100644 tools/include/uapi/linux/netdev.h
create mode 100644 tools/testing/selftests/bpf/progs/xdp_features.c
create mode 100755 tools/testing/selftests/bpf/test_xdp_features.sh
create mode 100644 tools/testing/selftests/bpf/xdp_features.c
create mode 100644 tools/testing/selftests/bpf/xdp_features.h
--
2.39.1
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